{"id":16996,"date":"2023-05-26T18:49:29","date_gmt":"2023-05-26T16:49:29","guid":{"rendered":"https:\/\/looketmedecine.fr\/?p=16996"},"modified":"2024-10-05T23:38:10","modified_gmt":"2024-10-05T21:38:10","slug":"une-autre-vision-sur-la-sante-esthetique-du-regard-esthetique-du-regard-et-medecine-regenerative-contribution-du-gel-plaquettaire-autologue-regenwound-pour-le-traitement-dulcer","status":"publish","type":"post","link":"https:\/\/looketmedecine.fr\/en\/une-autre-vision-sur-la-sante-esthetique-du-regard-esthetique-du-regard-et-medecine-regenerative-contribution-du-gel-plaquettaire-autologue-regenwound-pour-le-traitement-dulcer\/","title":{"rendered":"LM N\u00b01 \/ 2023. Severe corneal ulcers. Contribution of autologous platelet gel (RegenWound\u00ae) . Pr Merieme HAROUCH, MD. &amp; all."},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"16996\" class=\"elementor elementor-16996\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1c3e3ab6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1c3e3ab6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-21fb4445\" data-id=\"21fb4445\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-47e9c69 elementor-widget elementor-widget-heading\" data-id=\"47e9c69\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">LM LE JOURNAL<br>REVOIR LA SANT\u00c9 ESTH\u00c9TIQUE DU REGARD<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d7f847 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"7d7f847\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-db9f5fa elementor-widget elementor-widget-text-editor\" data-id=\"db9f5fa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 style=\"text-align: center;\"><span style=\"color: #ff0000;\"><strong>\u00a0Esth\u00e9tique du regard et m\u00e9decine r\u00e9g\u00e9n\u00e9rative<\/strong><\/span><\/h3><h3 style=\"text-align: center;\"><span style=\"color: #0000ff;\"><strong>Contribution du gel plaquettaire autologue (RegenWound\u00ae) pour le traitement d&rsquo;ulc\u00e8res corn\u00e9ens s\u00e9v\u00e8res : 10 premiers cas.<\/strong><\/span><\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-80e5a2e elementor-widget elementor-widget-text-editor\" data-id=\"80e5a2e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5 style=\"text-align: center;\"><span style=\"color: #0000ff;\"><strong>Prof. Merieme HAROUCH (1) *, MD. Safaa JIHAD, Younes ALLOU (2).<\/strong><\/span><\/h5><h5 style=\"text-align: center;\"><strong><span style=\"color: #ff0000;\">(1) Centre Casablanca Laser Vision, Centre Casablanca Corn\u00e9e-K\u00e9ratoc\u00f4ne<\/span><\/strong><\/h5><h5 style=\"text-align: center;\"><strong><span style=\"color: #ff0000;\">(2) Laboratoire de Biotechnologie M\u00e9dicale \u00e0 la Facult\u00e9 de M\u00e9decine et de Pharmacie de Rabat &#8211; Mohammed V. * Contact : <span style=\"text-decoration: underline;\"><a style=\"color: #ff0000; text-decoration: underline;\" href=\"mailto:m.harouch@lasik.ma\">m.harouch@lasik.ma<\/a><\/span><\/span><\/strong><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f4f9945 elementor-widget elementor-widget-image\" data-id=\"f4f9945\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"436\" height=\"328\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-26-a-18.51.34.png\" class=\"attachment-large size-large wp-image-16999\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-26-a-18.51.34.png 436w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-26-a-18.51.34-300x226.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-26-a-18.51.34-16x12.png 16w\" sizes=\"(max-width: 436px) 100vw, 436px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bc09736 elementor-widget elementor-widget-text-editor\" data-id=\"bc09736\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><span style=\"color: #0000ff;\"><strong>R\u00e9sum\u00e9\u00a0<\/strong><\/span><\/h2><h5><span style=\"color: #000000;\"><span style=\"color: #ff0000;\">Les ulc\u00e8res corn\u00e9ens s\u00e9v\u00e8res<\/span> restent un d\u00e9fi pour les ophtalmologistes du monde entier, en raison du risque associ\u00e9 de c\u00e9cit\u00e9 corn\u00e9enne ou de perforation de l&rsquo;\u0153il. <\/span><\/h5><h5><span style=\"color: #000000;\">Dans cette s\u00e9rie de cas pr\u00e9liminaires, nous avons essay\u00e9 d&rsquo;\u00e9tudier l&rsquo;utilisation du <span style=\"color: #ff0000;\">plasma riche en plaquettes autologue combin\u00e9 au s\u00e9rum de thrombine autologue<\/span>, en tant que gel plaquettaire autologue, pour stimuler le processus de cicatrisation de mani\u00e8re physiologique.<\/span><\/h5><h5><span style=\"color: #0000ff;\">Dans cette \u00e9tude, dix patients souffrant d&rsquo;ulc\u00e8res corn\u00e9ens de diff\u00e9rentes origines ont \u00e9t\u00e9 trait\u00e9s avec un gel plaquettaire autologue et nous avons \u00e9tudi\u00e9 le processus de cicatrisation et l&rsquo;acuit\u00e9 visuelle.<\/span><\/h5><h5><span style=\"color: #0000ff;\">Ces r\u00e9sultats pr\u00e9liminaires sugg\u00e8rent que l&rsquo;utilisation du gel plaquettaire autologue semble \u00eatre une option th\u00e9rapeutique prometteuse pour traiter les ulc\u00e8res corn\u00e9ens s\u00e9v\u00e8res.<\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ceac97 elementor-widget elementor-widget-text-editor\" data-id=\"3ceac97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h1><span style=\"color: #0000ff;\"><strong>Introduction<\/strong><\/span><\/h1><h5><span style=\"color: #800080;\"><strong>Les ulc\u00e8res corn\u00e9ens chroniques r\u00e9fractaires aux traitements standard restent un d\u00e9fi pour les ophtalmologistes du monde entier, en raison du risque de c\u00e9cit\u00e9 corn\u00e9enne ou de perforation de l&rsquo;\u0153il qui leur est associ\u00e9.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>De nouvelles approches m\u00e9dicales et chirurgicales ont \u00e9t\u00e9 mises au point ces derni\u00e8res ann\u00e9es, notamment des produits d\u00e9riv\u00e9s du sang, tels que le plasma riche en plaquettes (PRP).<\/strong><\/span><\/h5><h5><span style=\"color: #ff0000;\"><strong>Le PRP est aujourd&rsquo;hui largement utilis\u00e9 dans de nombreux domaines de la m\u00e9decine r\u00e9g\u00e9n\u00e9rative pour favoriser la cicatrisation. <\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Son utilisation non transfusionnelle a \u00e9t\u00e9 rapport\u00e9e pour la premi\u00e8re fois dans les ann\u00e9es 1980 en chirurgie maxillo-faciale, et a depuis \u00e9t\u00e9 \u00e9tendue \u00e0 des domaines tels que la m\u00e9decine esth\u00e9tique, la chirurgie plastique, l&rsquo;ophtalmologie, la chirurgie orthop\u00e9dique et la chirurgie cardiovasculaire [1], ainsi que la chirurgie des implants dentaires, la r\u00e9paration des muscles et\/ou des tendons, et la cicatrisation des plaies chroniques en chirurgie plastique et reconstructive [4-5]. [4-5]<\/strong><\/span><\/h5><h5><span style=\"color: #ff0000;\"><strong>La raison d&rsquo;\u00eatre de l&rsquo;utilisation du PRP pour des applications th\u00e9rapeutiques est d&rsquo;imiter le processus de cicatrisation biologique qui se produit normalement dans le corps humain apr\u00e8s une blessure [21].<\/strong><\/span><\/h5><h5><span style=\"color: #0000ff;\"><strong>La pr\u00e9paration du PRP consiste \u00e0 \u00e9liminer les globules rouges et blancs, qui retardent la cicatrisation, et \u00e0 concentrer les plaquettes, augmentant ainsi les facteurs utiles \u00e0 la cicatrisation [22].<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Comme il existe de nombreux protocoles de pr\u00e9paration du PRP, qui diff\u00e8rent par les dispositifs de pr\u00e9paration, les conditions de centrifugation et la dext\u00e9rit\u00e9 de l&rsquo;op\u00e9rateur, le PRP est utilis\u00e9 pour qualifier des produits biologiques dont la concentration en plaquettes, la qualit\u00e9 et la teneur en facteurs de croissance et le niveau de contamination par des globules rouges et des globules blancs pro-inflammatoires varient grandement [23].<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Cette grande variabilit\u00e9 des pr\u00e9parations de PRP pose un probl\u00e8me lorsqu&rsquo;il s&rsquo;agit de tirer des conclusions pr\u00e9cises de la litt\u00e9rature pour guider la production de PRP et d\u00e9terminer les indications d&rsquo;utilisation.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Cela a conduit \u00e0 l&rsquo;\u00e9laboration de syst\u00e8mes de classification des PRP pour faciliter la r\u00e9daction des rapports d&rsquo;\u00e9tudes cliniques [24].<\/strong><\/span><\/h5><h5><span style=\"color: #ff0000;\"><strong>Pour r\u00e9pondre au besoin d&rsquo;une pr\u00e9paration PRP standardis\u00e9e, RegenLab a d\u00e9velopp\u00e9 le syst\u00e8me de s\u00e9paration polym\u00e8re-gel (Fig.4), utilis\u00e9 dans cette \u00e9tude, qui permet de r\u00e9cup\u00e9rer efficacement les plaquettes et d&rsquo;\u00e9liminer les globules rouges et blancs dans un syst\u00e8me automatis\u00e9 \u00e0 circuit ferm\u00e9 automatis\u00e9.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>En ophtalmologie, les gouttes oculaires de PRP sont efficaces dans de nombreuses indications, telles que la s\u00e9cheresse oculaire (DED) ou les ulc\u00e8res corn\u00e9ens dormants postop\u00e9ratoires [13].<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Cependant, pour les ulc\u00e8res corn\u00e9ens qui ne gu\u00e9rissent pas, les options th\u00e9rapeutiques sont limit\u00e9es et la chirurgie \u00e9tait, jusqu&rsquo;\u00e0 pr\u00e9sent, souvent la seule option, ou des techniques telles que la greffe de membrane amniotique ou le lambeau conjonctival.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Nous d\u00e9crivons ici une nouvelle alternative, bas\u00e9e sur l&rsquo;utilisation du PRP et du s\u00e9rum de thrombine autologue (ATS) pour obtenir un gel plaquettaire autologue qui stimulera le processus de gu\u00e9rison de mani\u00e8re physiologique.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Lorsque le PRP liquide est inject\u00e9 dans les tissus, il coagule gr\u00e2ce \u00e0 l&rsquo;apport d&rsquo;ions calcium par le liquide interstitiel.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>N\u00e9anmoins, pour certaines applications th\u00e9rapeutiques, telles que le traitement des plaies et des ulc\u00e8res, les prestataires de soins de sant\u00e9 ont besoin d&rsquo;obtenir des gels ou des caillots de PRP.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>La coagulation du PRP citrat\u00e9 peut \u00eatre induite par des activateurs tels que la thrombine, une solution de calcium ou une combinaison des deux.<\/strong><\/span><\/h5><h5><span style=\"color: #ff0000;\"><strong>Il y a souvent une confusion entre l&rsquo;activation plaquettaire et l&rsquo;activation de la coagulation. Il existe une fausse croyance selon laquelle le PRP doit \u00eatre activ\u00e9 pour d\u00e9clencher la lib\u00e9ration de facteurs de croissance.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Cette croyance provient des premi\u00e8res exp\u00e9riences in vitro o\u00f9 l&rsquo;ajout d&rsquo;activateurs tels que la thrombine calcifi\u00e9e \u00e9tait n\u00e9cessaire pour extraire les facteurs de croissance des plaquettes [25].<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Les plaquettes ne sont pas de simples v\u00e9sicules remplies de facteurs de croissance, mais des entit\u00e9s fonctionnelles qui lib\u00e8rent les facteurs de croissance de mani\u00e8re contr\u00f4l\u00e9e en r\u00e9ponse \u00e0 des signaux locaux.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Ainsi, in vitro, en l&rsquo;absence d&rsquo;activation, les plaquettes ne lib\u00e8rent pas leurs facteurs de croissance. De fortes doses de thrombine calcifi\u00e9e sont donc n\u00e9cessaires pour induire une d\u00e9granulation compl\u00e8te des plaquettes et une lib\u00e9ration incontr\u00f4l\u00e9e des facteurs de croissance.<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>L&rsquo;activation endog\u00e8ne des plaquettes se produit lorsque le PRP est inject\u00e9 dans les tissus du patient [26].<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\">Les plaquettes sont physiologiquement activ\u00e9es par le contact avec les prot\u00e9ines de la matrice extracellulaire (par ex, collag\u00e8ne) au point d&rsquo;injection. \u00c0 chaque \u00e9tape du processus de cicatrisation, les plaquettes s\u00e9cr\u00e8tent diff\u00e9rents cocktails de facteurs de croissance, en r\u00e9ponse \u00e0 des signaux locaux, afin de stimuler une r\u00e9paration tissulaire organis\u00e9e.<\/span><\/h5><h5><span style=\"color: #333333;\">L&rsquo;activation exog\u00e8ne n&rsquo;est n\u00e9cessaire que pour obtenir un PRP sous forme de gel qui coagule rapidement au site d&rsquo;injection ou pour obtenir un PRP sous forme de gel qui coagule rapidement au site d&rsquo;injection ou pour obtenir un caillot de fibrine, une colle de fibrine autologue enrichie en plaquettes ou des membranes de fibrine suturables [27,28].<\/span><\/h5><h5><span style=\"color: #333333;\">Ces types de produits sont utilis\u00e9s par exemple pour traiter des plaies difficiles \u00e0 cicatriser [29].\u00a0<\/span>Cela emp\u00eache la diffusion du PRP et assure une action localis\u00e9e.<\/h5><h5><span style=\"color: #333333;\">Dans cette \u00e9tude, nous recommandons l&rsquo;utilisation de s\u00e9rum autologue contenant de la thrombine autologue \u00e0 un niveau physiologique pour activer le PRP, soit seul, soit en combinaison avec une solution de calcium de qualit\u00e9 pharmaceutique (Fig.1).<\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-434ab98 elementor-widget elementor-widget-image\" data-id=\"434ab98\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"506\" height=\"510\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.36.51.png\" class=\"attachment-large size-large wp-image-17037\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.36.51.png 506w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.36.51-298x300.png 298w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.36.51-150x150.png 150w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.36.51-12x12.png 12w\" sizes=\"(max-width: 506px) 100vw, 506px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2648c3d elementor-widget elementor-widget-text-editor\" data-id=\"2648c3d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h6 style=\"text-align: center;\"><span style=\"color: #0000ff;\"><strong>Exemple de gel plaquettaire autologue (Fig.1)<\/strong><\/span><\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b33553d elementor-widget elementor-widget-text-editor\" data-id=\"b33553d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><span style=\"color: #0000ff;\">Ce s\u00e9rum est pr\u00e9par\u00e9 \u00e0 partir du sang du patient \u00e0 l&rsquo;aide d&rsquo;un dispositif sp\u00e9cifique qui utilise \u00e9galement la technologie du gel s\u00e9parateur, mais dans un tube sans anticoagulant. <\/span><\/h5><h5><span style=\"color: #333333;\">L&rsquo;utilisation du s\u00e9rum de thrombine autologue, associ\u00e9 au PRP, permet la formation physiologique d&rsquo;un caillot de fibrine dans lequel les plaquettes s\u00e9cr\u00e8tent des facteurs de croissance de mani\u00e8re contr\u00f4l\u00e9e et s\u00e9quentielle tout au long du processus de remplacement du caillot par un nouveau tissu.<\/span><\/h5><h5><span style=\"color: #0000ff;\">Cet article met en \u00e9vidence les avantages du plasma riche en plaquettes solide et membranaire dans les d\u00e9fauts de la corn\u00e9e qui ne gu\u00e9rissent pas.<\/span><br \/><span style=\"color: #0000ff;\">dans les d\u00e9fauts de la corn\u00e9e qui ne gu\u00e9rissent pas, avec une description des 10 premiers cas cons\u00e9cutifs \u00e0 recevoir une th\u00e9rapie par gel plaquettaire autologue avec leur indication, leurs r\u00e9sultats et leur issue.<\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6feed7 elementor-widget elementor-widget-text-editor\" data-id=\"d6feed7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><strong><span style=\"color: #0000ff;\">Mat\u00e9riel et m\u00e9thode<\/span><\/strong><\/h3><p><span style=\"color: #ff0000;\">Cette \u00e9tude prospective a \u00e9t\u00e9 men\u00e9e sur 10 patients cons\u00e9cutifs souffrant d&rsquo;ulc\u00e8res corn\u00e9ens s\u00e9v\u00e8res (5 hommes et 5 femmes ; \u00e2ge moyen 60 [40-81].<\/span><\/p><p><span style=\"color: #ff0000;\">Les causes sous-jacentes des ulc\u00e8res corn\u00e9ens comprenaient les traumatismes, l&rsquo;infection \u00e0 herp\u00e8s simplex, une s\u00e9cheresse oculaire s\u00e9v\u00e8re, une k\u00e9ratite neurotrophique ou une maladie syst\u00e9mique <span style=\"text-decoration: underline;\"><em>(voir la r\u00e9partition des cas dans la figure 2)<\/em><\/span>.<\/span><\/p><p><span style=\"color: #0000ff;\"><strong>Une greffe autologue de gel plaquettaire a \u00e9t\u00e9 r\u00e9alis\u00e9e chez tous les patients entre juin 2021 et juin 2022 et le suivi moyen a \u00e9t\u00e9 de mois [2-14].<\/strong><\/span><\/p><p><span style=\"color: #0000ff;\"><strong>Tous les patients ont pr\u00e9sent\u00e9 un ulc\u00e8re corn\u00e9en incomplet ou ne cicatrisant pas apr\u00e8s le traitement initial, qui comprenait un traitement \u00e9tiologique (anti-infectieux), des larmes artificielles, des lentilles de contact \u00e0 pansement, des st\u00e9ro\u00efdes ou des gouttes oculaires PRP, st\u00e9ro\u00efdes ou des gouttes oculaires PRP.<\/strong><\/span><\/p><p><span style=\"color: #0000ff;\"><strong>Les ulc\u00e8res se trouvaient \u00e0 plusieurs endroits : <\/strong><\/span><\/p><ul><li><span style=\"color: #0000ff;\"><strong>6 \u00e9taient centraux ou paracentraux,<\/strong><\/span><\/li><li><span style=\"color: #0000ff;\"><strong>3 p\u00e9riph\u00e9riques,<\/strong><\/span><\/li><li><span style=\"color: #0000ff;\"><strong>1 total<\/strong><\/span><\/li><li><span style=\"color: #0000ff;\"><strong>4 de ces ulc\u00e8res \u00e9taient perfor\u00e9s.\u00a0<\/strong><\/span><\/li><li><span style=\"color: #0000ff;\"><strong>La profondeur moyenne des 6 cas restants \u00e9tait de 136 \u03bcm [50-323 \u03bcm]. <\/strong><\/span><\/li><li><span style=\"color: #0000ff;\"><strong>Le diam\u00e8tre moyen des ulc\u00e8res \u00e9tait de 4,73 mm [4 mm -11 mm].<\/strong><\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3fdd66a elementor-widget elementor-widget-image\" data-id=\"3fdd66a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"766\" height=\"570\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.48.28.png\" class=\"attachment-large size-large wp-image-17053\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.48.28.png 766w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.48.28-300x223.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.48.28-16x12.png 16w\" sizes=\"(max-width: 766px) 100vw, 766px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-012bcb2 elementor-widget elementor-widget-text-editor\" data-id=\"012bcb2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 style=\"text-align: center;\"><span style=\"color: #333333;\"><strong>Fig.2 Les diff\u00e9rents cas cliniques trait\u00e9s.<\/strong><\/span><\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33431c7 elementor-widget elementor-widget-image\" data-id=\"33431c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"1001\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.52.30-818x1024.png\" class=\"attachment-large size-large wp-image-17057\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.52.30-818x1024.png 818w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.52.30-240x300.png 240w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.52.30-768x962.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.52.30-1227x1536.png 1227w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.52.30-10x12.png 10w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.52.30.png 1270w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fb0de14 elementor-widget elementor-widget-image\" data-id=\"fb0de14\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"300\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.53.16-1024x384.png\" class=\"attachment-large size-large wp-image-17058\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.53.16-1024x384.png 1024w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.53.16-300x113.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.53.16-768x288.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.53.16-18x7.png 18w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.53.16.png 1348w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cdc504 elementor-widget elementor-widget-text-editor\" data-id=\"5cdc504\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table class=\"t1\" cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"td1\" valign=\"top\"><h6 class=\"p2\"><span style=\"color: #0000ff;\"><strong>Example of case n\u00b0 3. <\/strong><\/span><\/h6><h6 class=\"p2\"><span style=\"color: #0000ff;\"><strong>Perforated ulcer associated with rheumatoid arthritis. <\/strong><\/span><\/h6><ul><li class=\"p2\"><h6><span style=\"color: #0000ff;\"><strong>A. Fluorescein picture: Seidel test.<\/strong><\/span><\/h6><\/li><li class=\"p2\"><h6><span style=\"color: #0000ff;\"><strong>B. <span style=\"font-family: inherit; font-size: inherit;\">Perforated ulcer seen with slit lamp.<\/span><\/strong><\/span><\/h6><\/li><\/ul><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74e8487 elementor-widget elementor-widget-image\" data-id=\"74e8487\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"372\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.58.38-1024x476.png\" class=\"attachment-large size-large wp-image-17062\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.58.38-1024x476.png 1024w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.58.38-300x139.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.58.38-768x357.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.58.38-18x8.png 18w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-27-a-23.58.38.png 1420w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d2910fd elementor-widget elementor-widget-text-editor\" data-id=\"d2910fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5 class=\"p1\"><strong><span style=\"color: #0000ff;\">Example of case n\u00b02: <\/span><\/strong><\/h5><h5 class=\"p1\"><strong><span style=\"color: #0000ff;\">Deep peripheral ulcer associated with rheumatoid arthritis (256 \u03bcm).<\/span><\/strong><\/h5><ul><li class=\"p1\"><h5><strong><span style=\"color: #0000ff;\">(a) Fluorocein picture, visible ulcer and episcleritis. <\/span><\/strong><\/h5><\/li><li class=\"p1\"><h5><strong><span style=\"color: #0000ff;\">(b) slit lamp with view of both peripheral and local <\/span><\/strong><strong><span style=\"color: #0000ff;\">ulcers with episcleritis near the ulcers. <\/span><\/strong><\/h5><\/li><li class=\"p1\"><h5><strong><span style=\"color: #0000ff;\">(c) OCT picture with visualization of the ulcer.<\/span><\/strong><\/h5><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e578c57 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"e578c57\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ca2811 elementor-widget elementor-widget-text-editor\" data-id=\"1ca2811\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p2\"><strong><span style=\"color: #0000ff;\">PROC\u00c9DURE D\u2019\u00c9TUDE<\/span><\/strong><\/h2><h5 class=\"p3\"><span style=\"color: #333333;\"><strong>Tous les patients ont \u00e9t\u00e9 trait\u00e9s avec un gel plaquettaire autologue.<\/strong><\/span><\/h5><h5 class=\"p3\"><span style=\"color: #333333;\"><strong>La proc\u00e9dure est bas\u00e9e sur la pr\u00e9paration de deux produits biologiques.<\/strong><\/span><\/h5><h5 class=\"p3\"><span style=\"color: #333333;\"><strong>Tout d\u2019abord, le PRP est pr\u00e9par\u00e9 \u00e0 l\u2019aide du RegenKit BCT (RegenLab, Le Mont-Sur-Lausanne, Suisse) et comme suit :<\/strong><\/span><\/h5><h5 class=\"p4\"><span style=\"color: #333333;\"><strong>Extraction du sang dans le tube du RegenKit BCT, 10 mL sont pr\u00e9lev\u00e9s gr\u00e2ce \u00e0 un kit de pr\u00e9l\u00e8vement sanguin directement connect\u00e9 au tube. <\/strong><\/span><\/h5><h5 class=\"p4\"><span style=\"color: #333333;\"><strong>Comme il y a un vide dans le tube, le pr\u00e9l\u00e8vement de sang est automatique.<\/strong><\/span><\/h5><h5 class=\"p4\"><span style=\"color: #333333;\"><strong>Inverser le tube trois fois pour m\u00e9langer le sang avec l\u2019anticoagulant (citrate sodium).<\/strong><\/span><\/h5><h5 class=\"p4\"><span style=\"color: #333333;\"><strong>Placer le tube dans la centrifugeuse RegenLab pendant 5 minutes (force 1500 G).<\/strong><\/span><\/h5><h5 class=\"p4\"><span style=\"color: #333333;\"><strong>Apr\u00e8s la centrifugation, nous obtenons une s\u00e9paration physique, sp\u00e9cifique \u00e0 la densit\u00e9, des composants sanguins gr\u00e2ce au gel de s\u00e9paration, laissant les plaquettes et le plasma au-dessus du gel de s\u00e9paration.<\/strong><\/span><\/h5><h5 class=\"p4\"><span style=\"color: #333333;\"><strong>Le tube est retourn\u00e9 au moins 10 fois pour mettre en suspension toutes les plaquettes qui ont s\u00e9diment\u00e9 sur le gel.<\/strong><\/span><\/h5><h5 class=\"p4\"><span style=\"color: #333333;\"><strong>Extraction de 5 \u00e0 6 mL de PRP dans une seringue de 10 mL.<\/strong><\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d34311 elementor-widget elementor-widget-image\" data-id=\"1d34311\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"409\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.41-1024x523.png\" class=\"attachment-large size-large wp-image-17088\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.41-1024x523.png 1024w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.41-300x153.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.41-768x392.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.41-1536x784.png 1536w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.41-18x9.png 18w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.41.png 1590w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55823e6 elementor-widget elementor-widget-text-editor\" data-id=\"55823e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\" style=\"text-align: center;\"><span style=\"color: #0000ff;\"><strong>Principle of operation of Regen Lab technology for PRP preparation.<\/strong><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-811acfc elementor-widget elementor-widget-text-editor\" data-id=\"811acfc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><span style=\"color: #333333;\"><strong>Ensuite, le s\u00e9rum de thrombine autologue est pr\u00e9par\u00e9 \u00e0 l&rsquo;aide du RegenKit ATS comme suit :<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>&#8211; Extraction du sang dans le tube RegenKit ATS, 10mL sont extraits gr\u00e2ce \u00e0 un kit de pr\u00e9l\u00e8vement de sang directement connect\u00e9 au tube.<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>sang directement connect\u00e9 au tube. Comme il y a un vide dans le tube, le pr\u00e9l\u00e8vement de sang est automatique.<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>&#8211; Le tube est directement plac\u00e9 dans la centrifugeuse pendant 5 minutes (1500G-force).<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>&#8211; Apr\u00e8s la centrifugation, nous obtenons une s\u00e9paration physique, sp\u00e9cifique de la densit\u00e9, des composants sanguins gr\u00e2ce au gel de s\u00e9paration.<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>des composants sanguins gr\u00e2ce au gel de s\u00e9paration, laissant un caillot au-dessus du gel contenant la thrombine autologue activ\u00e9e<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>&#8211; Une canule est ins\u00e9r\u00e9e dans le tube en per\u00e7ant le bouchon et des mouvements de bas en haut sont effectu\u00e9s pour rompre le caillot de fibrine et laisser sortir le s\u00e9rum de thrombine autologue.<\/strong><\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-413b3df elementor-widget elementor-widget-image\" data-id=\"413b3df\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"304\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.27-1024x389.png\" class=\"attachment-large size-large wp-image-17089\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.27-1024x389.png 1024w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.27-300x114.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.27-768x292.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.27-1536x584.png 1536w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.27-2048x778.png 2048w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.27-18x7.png 18w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.26.27.png 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9fef112 elementor-widget elementor-widget-text-editor\" data-id=\"9fef112\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h6 class=\"p1\" style=\"text-align: center;\"><strong><span style=\"color: #0000ff;\">Principle of operation of Regen Lab technology for Autologous Thrombin Serum preparation.<\/span><\/strong><\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f72109b elementor-widget elementor-widget-text-editor\" data-id=\"f72109b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><span style=\"color: #333333;\"><strong>Apr\u00e8s ces pr\u00e9parations, un m\u00e9lange des deux produits biologiques doit \u00eatre effectu\u00e9 avec des ratios sp\u00e9cifiques.<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>Pour obtenir un gel, nous avons suivi ces diff\u00e9rentes \u00e9tapes :<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>1- Transf\u00e9rer les 5-6mL de PRP obtenus dans une coupelle st\u00e9rile.<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>2- Ajout de 1mL de s\u00e9rum de thrombine autologue dans la m\u00eame coupelle st\u00e9rile.<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>3- Ajout de 0,5mL de solution injectable de gluconate de calcium (10%) dans la m\u00eame coupe st\u00e9rile.<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>coupe st\u00e9rile<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>4- Laisser agir le processus de coagulation pendant quelques minutes (&lt;10minutes).<\/strong><\/span><br \/><span style=\"color: #333333;\"><strong>5- Le gel plaquettaire peut \u00eatre coup\u00e9 pour \u00eatre appliqu\u00e9 sur la surface sp\u00e9cifique.<\/strong><\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b80007 elementor-widget elementor-widget-text-editor\" data-id=\"8b80007\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><span style=\"color: #333333;\"><strong>La membrane de fibrine obtenue a \u00e9t\u00e9 appliqu\u00e9e sous un microscope op\u00e9ratoire comme un bouchon pour sceller le d\u00e9faut dans 4 cas, comme un recouvrement pour couvrir la totalit\u00e9 de la corn\u00e9e, du limbe et de la conjonctive dans 2 cas, et comme une combinaison des deux m\u00e9thodes dans 4 cas (voir image 3,4,5).<\/strong><\/span><\/h5><h5><span style=\"color: #333333;\"><strong>Dans tous les cas, aucune suture n&rsquo;a \u00e9t\u00e9 utilis\u00e9e, seule une lentille de contact a \u00e9t\u00e9 pos\u00e9e. Les patients sont sortis de l&rsquo;h\u00f4pital avec un pansement oculaire st\u00e9rile pour 3 jours et une ordonnance pour le traitement suivant :<\/strong><\/span><\/h5><ul><li><h5><span style=\"color: #333333;\"><strong>Collyre PRP 1 goutte toutes les 3 heures<\/strong><\/span><\/h5><\/li><li><h5><span style=\"color: #333333;\"><strong>Lubrifiant sans conservateur UID<\/strong><\/span><\/h5><\/li><li><h5><span style=\"color: #333333;\"><strong>Antibiotique topique sans conservateur (4 fois\/jour)<\/strong><\/span><\/h5><\/li><li><h5><span style=\"color: #333333;\"><strong>St\u00e9ro\u00efde topique ou oral si n\u00e9cessaire (\u00e0 adapter aux cas immunologiques)<\/strong><\/span><\/h5><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a4b399c elementor-widget elementor-widget-image\" data-id=\"a4b399c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"180\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.31.28-1024x231.png\" class=\"attachment-large size-large wp-image-17093\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.31.28-1024x231.png 1024w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.31.28-300x68.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.31.28-768x174.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.31.28-1536x347.png 1536w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.31.28-18x4.png 18w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.31.28.png 1664w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9873a0e elementor-widget elementor-widget-text-editor\" data-id=\"9873a0e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h6 class=\"p1\" style=\"text-align: left;\"><span style=\"color: #0000ff;\"><strong>Image 3.\u00a0<\/strong><\/span><span style=\"color: #0000ff;\"><strong style=\"text-align: center; font-size: 16px;\">Example of the case n\u00b07.\u00a0 The autologous platelet gel overlay on an ulcer due to a chemical acid injury.\u00a0<\/strong><\/span><\/h6><h6><span style=\"color: #0000ff;\"><strong>(a) <\/strong><\/span><span style=\"color: #0000ff;\"><strong>Postoperative slit lamp image at day 1. <\/strong><\/span><\/h6><h6><span style=\"color: #0000ff;\"><strong>(b) OCT picture at day1 with visualization of the autologous platelet gel and the therapeutic lens.<\/strong><\/span><\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-01d7fe9 elementor-widget elementor-widget-image\" data-id=\"01d7fe9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"324\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.27-1024x415.png\" class=\"attachment-large size-large wp-image-17094\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.27-1024x415.png 1024w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.27-300x122.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.27-768x311.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.27-1536x623.png 1536w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.27-18x7.png 18w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.27.png 1574w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-305f4b8 elementor-widget elementor-widget-image\" data-id=\"305f4b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"460\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.55-1024x589.png\" class=\"attachment-large size-large wp-image-17095\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.55-1024x589.png 1024w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.55-300x173.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.55-768x442.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.55-18x10.png 18w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.38.55.png 1074w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e33d350 elementor-widget elementor-widget-text-editor\" data-id=\"e33d350\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><span style=\"color: #ff0000;\"><strong>R\u00e9sultats<\/strong><\/span><\/h2><h5><span style=\"color: #333333;\">La cicatrisation a \u00e9t\u00e9 obtenue apr\u00e8s une p\u00e9riode moyenne de 10 jours (J7-D22) pour tous les cas. <\/span><\/h5><h5><span style=\"color: #333333;\">La lentille a \u00e9t\u00e9 retir\u00e9e apr\u00e8s r\u00e9sorption de la membrane. Il n&rsquo;y a pas eu de nouvelles interventions, sauf pour un patient en raison d&rsquo;une r\u00e9\u00e9pith\u00e9lisation partielle. <\/span><\/h5><h5><span style=\"color: #333333;\">La cicatrisation compl\u00e8te a \u00e9t\u00e9 obtenue apr\u00e8s la deuxi\u00e8me proc\u00e9dure.<\/span><\/h5><h5><span style=\"color: #333333;\">Les patients ont \u00e9t\u00e9 suivis \u00e0 intervalles r\u00e9guliers le jour 1, le jour 3, le jour 7 et le jour 10 apr\u00e8s l&rsquo;intervention, avec un examen clinique (sympt\u00f4mes, acuit\u00e9 visuelle et coloration de la corn\u00e9e) et un AS-OCT (segment ant\u00e9rieur &#8211; OCT).<\/span><br \/><span style=\"color: #333333;\">(segment ant\u00e9rieur &#8211; OCT) \u00e0 chaque visite.<\/span><\/h5><h5><span style=\"color: #333333;\">La lentille de contact \u00e0 pansement a \u00e9t\u00e9 retir\u00e9e apr\u00e8s l&rsquo;absorption de la membrane, soit au jour 9 en moyenne (jour 3-journ\u00e9e 17).<\/span><br \/><span style=\"color: #333333;\">Tous les patients ont \u00e9galement re\u00e7u des soins de routine et\/ou sp\u00e9cifiques pour leurs conditions sous-jacentes.<\/span><\/h5><h5><span style=\"color: #333333;\">La transparence de la corn\u00e9e apr\u00e8s la greffe a \u00e9t\u00e9 maintenue, au moins partiellement. Les patients pr\u00e9sentant un d\u00e9ficit en cellules souches limbiques<\/span><\/h5><h5><span style=\"color: #333333;\">Les patients pr\u00e9sentant un d\u00e9ficit en cellules souches limbiques d\u00fb \u00e0 une br\u00fblure chimique ou \u00e0 un dysfonctionnement des glandes de Meibomius ont re\u00e7u 3 s\u00e9ries de gouttes de PRP (10 jours chacune).<\/span><br \/><span style=\"color: #333333;\">gouttes de PRP (10 jours chacune).\u00a0<\/span><\/h5><h5><span style=\"color: #333333;\">Une nouvelle proc\u00e9dure a \u00e9t\u00e9 r\u00e9alis\u00e9e chez un seul patient pr\u00e9sentant une perforation corn\u00e9enne profonde associ\u00e9e \u00e0 une polyarthrite rhumato\u00efde. <\/span><\/h5><h5><span style=\"color: #333333;\">La premi\u00e8re membrane a \u00e9t\u00e9 r\u00e9sorb\u00e9e au troisi\u00e8me jour, mais en raison d&rsquo;une cicatrisation incompl\u00e8te, la proc\u00e9dure a \u00e9t\u00e9 r\u00e9p\u00e9t\u00e9e, et la cicatrisation compl\u00e8te a \u00e9t\u00e9 obtenue au quatorzi\u00e8me jour apr\u00e8s la deuxi\u00e8me proc\u00e9dure.<\/span><\/h5><h5><span style=\"color: #333333;\">Dans notre \u00e9tude, la cicatrisation a \u00e9t\u00e9 compl\u00e8te chez tous les patients, sans r\u00e9cidive au cours de la p\u00e9riode de suivi qui s&rsquo;est \u00e9tendue de 2 \u00e0 14 mois.<\/span><span style=\"color: #333333;\"><br \/><\/span><\/h5><h5><span style=\"color: #333333;\">Une am\u00e9lioration subjective de l&rsquo;irritation et de la douleur du segment ant\u00e9rieur a \u00e9t\u00e9 signal\u00e9e par 90 % des patients d\u00e8s le premier jour suivant l&rsquo;intervention.<\/span><span style=\"color: #333333;\"><br \/><\/span><\/h5><h5><span style=\"color: #333333;\">Chez tous les patients pr\u00e9sentant une n\u00e9ovascularisation corn\u00e9enne initiale, une stabilisation ou une r\u00e9duction de l&rsquo;invasion n\u00e9ovasculaire a \u00e9t\u00e9 obtenue en 3 semaines. L&rsquo;analyse de ce param\u00e8tre d\u00e9passe le cadre de cet article.<\/span><span style=\"color: #333333;\"><br \/><\/span><\/h5><h5><span style=\"color: #333333;\">Aucune r\u00e9cidive d&rsquo;ulc\u00e8re n&rsquo;a \u00e9t\u00e9 signal\u00e9e \u00e0 la fin de la p\u00e9riode de suivi, et tous les patients inclus dans cette \u00e9tude font l&rsquo;objet d&rsquo;un suivi r\u00e9gulier.<\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ef89c61 elementor-widget elementor-widget-image\" data-id=\"ef89c61\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"776\" height=\"1024\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.00-776x1024.png\" class=\"attachment-large size-large wp-image-17096\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.00-776x1024.png 776w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.00-227x300.png 227w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.00-768x1013.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.00-1164x1536.png 1164w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.00-9x12.png 9w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.00.png 1456w\" sizes=\"(max-width: 776px) 100vw, 776px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-baa277d elementor-widget elementor-widget-image\" data-id=\"baa277d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"900\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.28-910x1024.png\" class=\"attachment-large size-large wp-image-17097\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.28-910x1024.png 910w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.28-267x300.png 267w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.28-768x864.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.28-1366x1536.png 1366w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.28-11x12.png 11w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.40.28.png 1490w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc17751 elementor-widget elementor-widget-image\" data-id=\"cc17751\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"626\" src=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.41.11-1024x801.png\" class=\"attachment-large size-large wp-image-17098\" alt=\"\" srcset=\"https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.41.11-1024x801.png 1024w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.41.11-300x235.png 300w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.41.11-768x600.png 768w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.41.11-15x12.png 15w, https:\/\/looketmedecine.fr\/wp-content\/uploads\/2023\/05\/Capture-decran-2023-05-28-a-00.41.11.png 1402w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dcffc3b elementor-widget elementor-widget-text-editor\" data-id=\"dcffc3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><span style=\"color: #ff0000;\"><strong>Discussion<\/strong><\/span><\/h3><h5><span style=\"color: #333333;\">La surface oculaire comprend la corn\u00e9e, la conjonctive et le film lacrymal qui la recouvre.<\/span><br \/><span style=\"color: #333333;\">L&rsquo;hom\u00e9ostasie de la surface oculaire d\u00e9pend de l&rsquo;int\u00e9grit\u00e9 anatomique et physiologique de tous ses composants.<\/span><\/h5><h5><span style=\"color: #333333;\">La cicatrisation de la corn\u00e9e est un processus complexe et \u00e0 multiples facettes impliquant l&rsquo;inflammation, la mort cellulaire, la prolif\u00e9ration, la migration et la cicatrisation.<\/span><\/h5><h5><span style=\"color: #333333;\">La cicatrisation de la corn\u00e9e est un processus complexe et multiforme impliquant l&rsquo;inflammation, la mort cellulaire, la prolif\u00e9ration, la migration et la diff\u00e9renciation, ainsi que le remodelage de la matrice extracellulaire [6].<\/span><\/h5><h5><span style=\"color: #333333;\">La lib\u00e9ration de facteurs de croissance (par exemple KGF, PDGF et HGF) et de cytokines qui en r\u00e9sulte d\u00e9clenche la transformation des cellules \u00e9pith\u00e9liales et stromales en myofibroblastes et d\u00e9termine l&rsquo;issue d&rsquo;une l\u00e9sion \u00e9pith\u00e9liale<\/span><span style=\"color: #333333;\">\u00a0[7]<\/span><\/h5><h5><span style=\"color: #333333;\">Le plasma contient de nombreux composants n\u00e9cessaires \u00e0 la survie des cellules, tels que des nutriments, des vitamines, hormones, \u00e9lectrolytes, facteurs de croissance (IGF et HGF) et prot\u00e9ines.\u00a0<\/span><\/h5><h5><span style=\"color: #333333;\">Ces prot\u00e9ines, essentielles au processus de coagulation et \u00e0 la formation de polym\u00e8res de fibrine, servent d&rsquo;\u00e9chafaudage pour l&rsquo;adh\u00e9sion cellulaire, la migration, la prolif\u00e9ration et la diff\u00e9renciation en nouveaux tissus. [12]<\/span><\/h5><h5><span style=\"color: #333333;\">Le plasma riche en plaquettes (PRP) est la fraction obtenue par centrifugation du sang total. [3].\u00a0<\/span><\/h5><h5><span style=\"color: #333333;\">Les plaquettes jouent un r\u00f4le central dans l&rsquo;h\u00e9mostase, car elles s&rsquo;agr\u00e8gent et conduisent \u00e0 la formation d&rsquo;une surface pro-coagulante et \u00e0 la g\u00e9n\u00e9ration de thrombine et de fibrine. Elles contiennent des facteurs de croissance tels que le VEGF, le PDGF ou le TGF-\u03b2, ainsi que des cytokines.<\/span><\/h5><h5><span style=\"color: #333333;\">Le PRP favorise la r\u00e9g\u00e9n\u00e9ration et la r\u00e9paration des tissus et influence la r\u00e9activit\u00e9 des cellules dans les domaines de l&rsquo;angiogen\u00e8se et de l&rsquo;inflammation.<\/span><br \/><span style=\"color: #333333;\">l&rsquo;angiogen\u00e8se et l&rsquo;inflammation.<\/span><\/h5><h5><span style=\"color: #333333;\">Cette propri\u00e9t\u00e9 est tr\u00e8s utile lorsqu&rsquo;une cicatrisation rapide et une r\u00e9g\u00e9n\u00e9ration des tissus sont n\u00e9cessaires, par exemple dans le cas d&rsquo;ulc\u00e8res de la corn\u00e9e. <\/span><\/h5><h5><span style=\"color: #333333;\">Que ce soit sous forme solide ou membranaire, le PRP est sous forme solide ou membranaire, le PRP est utilis\u00e9 pour combler les d\u00e9fauts ou fournir un support adh\u00e9sif.<\/span><\/h5><h5><span style=\"color: #333333;\">Ces puissantes propri\u00e9t\u00e9s de cicatrisation sont dues \u00e0 la teneur en plaquettes fra\u00eeches du PRP (qu&rsquo;il soit solide ou activ\u00e9), presque deux \u00e0 trois fois plus \u00e9lev\u00e9e que dans le sang total, ou quatre fois plus \u00e9lev\u00e9e dans les gouttes ophtalmiques au PRP<\/span><span style=\"color: #333333;\">\u00a0en collyre. <\/span><\/h5><h5><span style=\"color: #333333;\">Les facteurs de croissance sont lib\u00e9r\u00e9s progressivement \u00e0 partir de ces plaquettes fra\u00eeches sur une p\u00e9riode de 7 \u00e0 10 jours.<\/span><span style=\"color: #333333;\">\u00a0[8,9,10]<\/span><\/h5><h5><span style=\"color: #0000ff;\">Ce traitement a permis une cicatrisation compl\u00e8te, \u00e9liminant ainsi le besoin d&rsquo;une intervention chirurgicale, co\u00fbteuse et longue.<\/span><br \/><span style=\"color: #0000ff;\">co\u00fbteuse et chronophage. <\/span><\/h5><h5><span style=\"color: #333333;\">Son principal avantage est de pr\u00e9server la transparence partielle ou totale de la corn\u00e9e, en stabilisant ou en r\u00e9duisant l&rsquo;\u00e9paisseur de la corn\u00e9e. Cet objectif peut \u00e9galement \u00eatre atteint <\/span><span style=\"color: #333333;\">avec un lambeau conjonctival, comme l&rsquo;a montr\u00e9 notre patient avec une perforation corn\u00e9enne.<\/span><\/h5><h5><span style=\"color: #0000ff;\">Des preuves de l&rsquo;efficacit\u00e9 du gel plaquettaire autologue ont \u00e9galement \u00e9t\u00e9 rapport\u00e9es dans un article r\u00e9cent publi\u00e9 par une \u00e9quipe mexicaine sur 3 cas d&rsquo;ulc\u00e8res corn\u00e9ens non cicatrisants. [11]<\/span><\/h5><h5><span style=\"color: #333333;\">Les cytokines pro-inflammatoires, telles que l&rsquo;interleukine 1-2-8, l&rsquo;interf\u00e9ron et le facteur de n\u00e9crose tumorale, sont lib\u00e9r\u00e9es par les cellules \u00e9pith\u00e9liales de la surface oculaire en cas de l\u00e9sion corn\u00e9enne [13], sont lib\u00e9r\u00e9es par les cellules \u00e9pith\u00e9liales de la surface oculaire en cas de l\u00e9sion corn\u00e9enne [13]. <\/span><br \/><span style=\"color: #333333;\">L&rsquo;inflammation est un facteur aggravant et son contr\u00f4le est essentiel pour \u00e9viter d&rsquo;endommager davantage le stroma corn\u00e9en.<\/span><\/h5><h5><span style=\"color: #333333;\">Le gel de fibrine autologue et le plasma riche en plaquettes (PRP) contiennent tous deux le facteur de croissance des h\u00e9patocytes (HGF) et d&rsquo;autres facteurs<\/span><span style=\"color: #333333;\">\u00a0de croissance largement utilis\u00e9s dans la r\u00e9paration des tissus et la m\u00e9decine r\u00e9g\u00e9n\u00e9rative.<\/span><\/h5><h5><span style=\"color: #333333;\">Ils prot\u00e8gent les tissus des l\u00e9sions inflammatoires en diminuant l&rsquo;expression g\u00e9n\u00e9tique de la COX-1, COX-2, et bloquent presque compl\u00e8tement la production cellulaire de PGE2 et l&rsquo;expression des prot\u00e9ines COX [14, 15, 16,17].<\/span><\/h5><h5><span style=\"color: #0000ff;\">De nombreuses \u00e9tudes ont montr\u00e9 que la k\u00e9ratoplastie p\u00e9n\u00e9trante d&rsquo;urgence pour traiter les ulc\u00e8res perfor\u00e9s est associ\u00e9e \u00e0 un taux plus \u00e9lev\u00e9 d&rsquo;\u00e9chec de la greffe est associ\u00e9e \u00e0 un taux d&rsquo;\u00e9chec de la greffe plus \u00e9lev\u00e9 que les k\u00e9ratoplasties r\u00e9alis\u00e9es plusieurs semaines ou mois apr\u00e8s la l\u00e9sion.<\/span><\/h5><h5><span style=\"color: #333333;\">Compte tenu de l&rsquo;impact de l&rsquo;inflammation sur la cicatrisation de la corn\u00e9e, la prise en charge des perforations corn\u00e9ennes caus\u00e9es par l&rsquo;inflammation ou l&rsquo;infection ne doit pas seulement se concentrer sur la tectonique, mais aussi r\u00e9soudre la destruction continue du stroma corn\u00e9en induite par l&rsquo;inflammation, ce qui conduit \u00e0 une cicatrisation de la corn\u00e9e du stroma corn\u00e9en induite par l&rsquo;inflammation et conduisant \u00e0 la perforation. [18, 19, 20]<\/span><\/h5><h5><span style=\"color: #0000ff;\">Avec un \u00e9chafaudage, des facteurs de croissance et des propri\u00e9t\u00e9s anti-inflammatoires, l&rsquo;utilisation du gel plaquettaire autologue est un substrat id\u00e9al pour la r\u00e9alisation d&rsquo;une greffe de corn\u00e9e, pour r\u00e9parer les ulc\u00e8res profonds et les perforations, avec ou sans destruction tissulaire m\u00e9di\u00e9e par l&rsquo;inflammation.<\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c903133 elementor-widget elementor-widget-text-editor\" data-id=\"c903133\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><span style=\"color: #0000ff;\"><strong>Conclusion<\/strong><\/span><\/h3><h5><span style=\"color: #0000ff;\">Le gel plaquettaire autologue est une technique chirurgicale simple et directe qui devrait faire partie de l&rsquo;arsenal th\u00e9rapeutique pour les maladies de la surface oculaire.<\/span><\/h5><h5><span style=\"color: #ff0000;\">Cependant, les indications de cette technique doivent \u00eatre clarifi\u00e9es, car elle ne peut pas corriger toutes les conditions secondaires associ\u00e9es \u00e0 la destruction du limbe.<\/span><\/h5><h5><span style=\"color: #800080;\">La combinaison autologue entre le plasma \u00a0riche en plaquettes et le s\u00e9rum de thrombine sous la forme d&rsquo;un gel plaquettaire a prouv\u00e9 ses propri\u00e9t\u00e9s cicatrisantes dans la r\u00e9paration des ulc\u00e8res corn\u00e9ens et de la surface oculaire, mais une \u00e9tude clinique randomis\u00e9e et contr\u00f4l\u00e9e de plus grande envergure doit \u00eatre r\u00e9alis\u00e9e pour valider ces r\u00e9sultats pr\u00e9liminaires.<\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-94289c8 elementor-widget elementor-widget-text-editor\" data-id=\"94289c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><span style=\"color: #800080;\"><strong>R\u00e9f\u00e9rences<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>1-Knighton et al;, 1982;Marx et al. 1998 Monteleone et al ,2000.<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>2-Platelet rich plasma: hope or hype? Reena Yaman1, Theresa N. Kinard2; Department of <\/strong><\/span><span style=\"color: #800080;\"><strong>Internal Medicine, Mayo Clinic Arizona, AZ, USA; 2Department of Laboratory Medicine and <\/strong><\/span><span style=\"color: #800080;\"><strong>Pathology, Mayo Clinic Arizona, AZ, USA\u2013AOB- Published: 31 March 2022.<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>3-Dhurat R, Sukesh M. Principles and Methods of Preparation of Platelet-Rich Plasma: A <\/strong><\/span><span style=\"color: #800080;\"><strong>Review and Author&rsquo;s Perspective. J Cutan Aesthet Surg 2014;7:189-97.<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>4- Lariviere B, Rouleau M, Picard S. et al.. Human plasma fibronectin potentiates the <\/strong><\/span><span style=\"color: #800080;\"><strong>mitogenic activity of platelet-derived growth factor and complements its wound healing <\/strong><\/span><span style=\"color: #800080;\"><strong>effects. 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Blood-based treatments for severe dry eye disease: <\/strong><\/span><span style=\"color: #800080;\"><strong>the need of a consensus. J Clin Med. 2019 Sep 17;8(9). doi:10.3390\/jcm8091478. [Crossref], <\/strong><\/span><span style=\"color: #800080;\"><strong>[PubMed], [Web of Science \u00ae], [Google Scholar]<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>11 Solid Platelet\u2011rich Plasma Combined with Silicone-hydrogel Soft Contact Lens for Nonhealing <\/strong><\/span><span style=\"color: #800080;\"><strong>Corneal Ulcers: A Case Series.Rosa Alvarado-Villacorta , MD, MSc(c), Jesus H. 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Phys Med Rehabili Clin N Am 2016; <\/strong><\/span><span style=\"color: #800080;\"><strong>27(4): 825-853.<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>25 Ross, R.; Glomset, J.; Kariya, B.; Harker, L. A platelet-dependent serum factor that <\/strong><\/span><span style=\"color: #800080;\"><strong>stimulates the proliferation of arterial smooth muscle cells in vitro. Proceedings of the <\/strong><\/span><span style=\"color: #800080;\"><strong>National Academy of Sciences of the United States of America 1974, 71, 1207-1210.<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>26 DeLong, J.M.; Russell, R.P.; Mazzocca, A.D. Platelet-rich plasma: the PAW classification <\/strong><\/span><span style=\"color: #800080;\"><strong>system. Arthroscopy : the journal of arthroscopic &amp; related surgery : official publication of <\/strong><\/span><span style=\"color: #800080;\"><strong>the Arthroscopy Association of North America and the International Arthroscopy Association <\/strong><\/span><span style=\"color: #800080;\"><strong>2012, 28, 998-1009, doi:10.1016\/j.arthro.2012.04.148.<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>27 Hersant, B.; SidAhmed-Mezi, M.; La Padula, S.; Niddam, J.; Bouhassira, J.; Meningaud, J.P.<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>Efficacy of Autologous Platelet-rich Plasma Glue in Weight Loss Sequelae Surgery and Breast Reduction: A Prospective Study. Plastic and reconstructive surgery. Global open 2016, 4, <\/strong><\/span><span style=\"color: #800080;\"><strong>e871, doi:10.1097\/GOX.0000000000000823.<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>28 Gumina, S.; Campagna, V.; Ferrazza, G.; Giannicola, G.; Fratalocchi, F.; Milani, A.; <\/strong><\/span><span style=\"color: #800080;\"><strong>Postacchini, F. Use of platelet-leukocyte membrane in arthroscopic repair of large rotator <\/strong><\/span><span style=\"color: #800080;\"><strong>cuff tears: a prospective randomized study. J Bone Joint Surg Am 2012, 94, 1345-1352, <\/strong><\/span><span style=\"color: #800080;\"><strong>doi:10.2106\/JBJS.K.00394.<\/strong><\/span><\/h5><h5><span style=\"color: #800080;\"><strong>29 Hu, Z.; Qu, S.; Zhang, J.; Cao, X.; Wang, P.; Huang, S.; Shi, F.; Dong, Y.; Wu, J.; Tang, B.; et <\/strong><\/span><span style=\"color: #800080;\"><strong>Efficacy and Safety of Platelet-Rich Plasma for Patients with Diabetic Ulcers: A Systematic <\/strong><\/span><span style=\"color: #800080;\"><strong>Review and Meta-analysis. Advances in wound care 2019, 8, 298-308, <\/strong><\/span><span style=\"color: #800080;\"><strong>doi:10.1089\/wound.2018.0842.<\/strong><\/span><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-82ef654 elementor-widget elementor-widget-text-editor\" data-id=\"82ef654\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>LM LE JOURNAL REVOIR LA SANT\u00c9 ESTH\u00c9TIQUE DU REGARD \u00a0Esth\u00e9tique du regard et m\u00e9decine r\u00e9g\u00e9n\u00e9rative Contribution du gel plaquettaire autologue (RegenWound\u00ae) pour le traitement d&rsquo;ulc\u00e8res corn\u00e9ens s\u00e9v\u00e8res : 10 premiers cas. Prof. Merieme HAROUCH (1) *, MD. Safaa JIHAD, Younes ALLOU (2). (1) Centre Casablanca Laser Vision, Centre Casablanca Corn\u00e9e-K\u00e9ratoc\u00f4ne (2) Laboratoire de Biotechnologie M\u00e9dicale [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":16999,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[152],"tags":[316,307],"auteur":[441],"mots-cles":[],"class_list":["post-16996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-un-autre-regards","tag-lm1-theme-un-autre-regard-2023","tag-replay-lm1-2023","auteur-merieme-harouch"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>LM N\u00b01 \/ 2023. Ulc\u00e8res corn\u00e9ens s\u00e9v\u00e8res. Contribution du gel plaquettaire autologue (RegenWound\u00ae) . 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