{"id":472,"date":"2026-08-28T06:56:05","date_gmt":"2026-08-28T06:56:05","guid":{"rendered":"https:\/\/nhdbio.com\/ll-37-ocular-antimicrobial-in-vitro-study-data\/"},"modified":"2026-08-28T07:31:46","modified_gmt":"2026-08-28T07:31:46","slug":"ll-37-ocular-antimicrobial-in-vitro-study-data","status":"publish","type":"post","link":"https:\/\/nhdbio.com\/fr\/ll-37-ocular-antimicrobial-in-vitro-study-data\/","title":{"rendered":"LL-37 \u00e0 la surface oculaire\u00a0: expression et donn\u00e9es antimicrobiennes in vitro"},"content":{"rendered":"<p class=\"pim-standfirst wp-block-paragraph\">Un article LL-37 fr\u00e9quemment cit\u00e9 a examin\u00e9 l\u2019expression dans les cellules humaines de la surface oculaire et l\u2019activit\u00e9 antimicrobienne lors d\u2019essais en laboratoire. Elle n\u2019a pas administr\u00e9 le LL-37 comme traitement aux patients.<\/p><div class=\"wp-block-group pim-key-takeaways\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Ce que montre le dossier<\/h2><ul class=\"wp-block-list\"><li>L'\u00e9tude a d\u00e9tect\u00e9 LL-37\/hCAP18 RNA et le peptide dans des \u00e9chantillons \u00e9pith\u00e9liaux corn\u00e9ens et conjonctivals.<\/li><li>Les valeurs bact\u00e9riennes EC50 signal\u00e9es variaient de 1.3 \u00e0 3.6 \u00b5g\/mL pour les souches test\u00e9es.<\/li><li>Les exp\u00e9riences antivirales \u00e9taient des tests d\u2019inactivation directe et non un essai clinique d\u2019infection.<\/li><\/ul><\/div><\/div><figure class=\"wp-block-image size-full pim-article-figure\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"http:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/ll37-antimicrobial-research-20260828.png\" alt=\"Scientifique examinant les analyses bact\u00e9riennes et les donn\u00e9es de recherche sur les membranes peptidiques\" class=\"wp-image-461\" srcset=\"https:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/ll37-antimicrobial-research-20260828.png 1536w, https:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/ll37-antimicrobial-research-20260828-300x200.png 300w, https:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/ll37-antimicrobial-research-20260828-1024x683.png 1024w, https:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/ll37-antimicrobial-research-20260828-768x512.png 768w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><figcaption class=\"wp-element-caption\">Illustration \u00e9ditoriale originale du contexte de recherche. Il ne s'agit pas d'une figure d'\u00e9tude, d'une image de patient, d'une photographie du produit fourni ou d'une repr\u00e9sentation du mat\u00e9riel d'essai.<\/figcaption><\/figure><h2 class=\"wp-block-heading\">Dossier d'\u00e9tudes<\/h2><p class=\"wp-block-paragraph\">L'article soutient le r\u00f4le du LL-37 endog\u00e8ne dans l'immunit\u00e9 inn\u00e9e oculaire et montre une activit\u00e9 dans des conditions de test d\u00e9finies. La concentration, la composition du milieu, les prot\u00e9ines s\u00e9riques, la souche de l'organisme et la conception du test peuvent modifier sensiblement les r\u00e9sultats des peptides antimicrobiens.<\/p><div class=\"wp-block-group pim-evidence-table\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><div class=\"pim-evidence-row\"><strong>Type de preuve<\/strong><span>Travail d'expression et tests microbiens in vitro<\/span><\/div><div class=\"pim-evidence-row\"><strong>Bact\u00e9ries test\u00e9es<\/strong><span>P. aeruginosa, S. aureus et S. epidermidis<\/span><\/div><div class=\"pim-evidence-row\"><strong>Plage EC50 signal\u00e9e<\/strong><span>1.3\u20133.6 \u00b5g\/mL<\/span><\/div><div class=\"pim-evidence-row\"><strong>Traitement clinique<\/strong><span>Aucun; pas de gestion des patients<\/span><\/div><\/div><\/div><h2 class=\"wp-block-heading\">R\u00e9sultats en contexte<\/h2><p class=\"wp-block-paragraph\">Les auteurs ont \u00e9galement test\u00e9 HSV-1 et l'ad\u00e9novirus dans des exp\u00e9riences d'inactivation directe et ont signal\u00e9 des r\u00e9ductions de titre significatives. Il s\u2019agit de preuves de laboratoire et non d\u2019une preuve d\u2019efficacit\u00e9 th\u00e9rapeutique ou d\u2019un dosage s\u00fbr dans les yeux.<\/p><p class=\"wp-block-paragraph\">\u00c9tant donn\u00e9 que LL-37 interagit \u00e9galement avec les cellules et les voies immunitaires des mammif\u00e8res, l\u2019activit\u00e9 antimicrobienne \u00e0 elle seule ne constitue pas une \u00e9valuation compl\u00e8te des avantages et des risques.<\/p><h2 class=\"wp-block-heading\">Ce \u00e0 quoi cette \u00e9tude ne peut pas r\u00e9pondre<\/h2><p class=\"wp-block-paragraph\">L'activit\u00e9 in vitro n'\u00e9tablit pas l'exposition, la tol\u00e9rabilit\u00e9 ou l'efficacit\u00e9 chez l'homme.<\/p><p class=\"wp-block-paragraph\">L'expression peptidique endog\u00e8ne ne prouve pas qu'une pr\u00e9paration exog\u00e8ne est s\u00fbre.<\/p>","protected":false},"excerpt":{"rendered":"<p>Un article LL-37 fr\u00e9quemment cit\u00e9 a examin\u00e9 l\u2019expression dans les cellules humaines de la surface oculaire et l\u2019activit\u00e9 antimicrobienne lors d\u2019essais en laboratoire. Elle n\u2019a pas administr\u00e9 le LL-37 comme traitement aux patients.<\/p>","protected":false},"author":1,"featured_media":637,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pim_family_ids":"348","pim_article_type":"Published study case","pim_evidence_level":"Human tissue expression plus in-vitro antimicrobial assays","pim_reviewer":"NHD evidence editorial workflow","pim_reviewed_date":"2026-08-28","pim_editorial_note":"Source-checked on 2026-08-28. Null findings and study limitations are retained. This is not independent peer review, medical advice, a customer case, or validation of a catalog lot.","pim_review_status":"reviewed","pim_review_reason":"At least two linked primary or authoritative records and an explicit evidence boundary are present.","pim_creation_method":"The editorial workflow starts with linked peer-reviewed papers, trial registries or regulatory records; extracts the population or model, endpoints, numerical results and limitations; and separates the studied intervention from catalog material. AI-assisted drafting was used to structure the first version. Claims, figures, evidence labels and limitations were checked against the linked records in the site editorial workflow. This is not independent peer review.","pim_sources":"[{\"title\":\"LL-37 ocular expression and antimicrobial activity\",\"url\":\"https:\/\/pubmed.ncbi.nlm.nih.gov\/16020269\/\",\"note\":\"Human tissue expression and in-vitro assays; PMID 16020269.\"},{\"title\":\"LL-37 analog activity, cytotoxicity and serum inhibition\",\"url\":\"https:\/\/pubmed.ncbi.nlm.nih.gov\/15980359\/\",\"note\":\"In-vitro context; PMID 15980359.\"},{\"title\":\"FDA list of bulk substances with significant safety concerns\",\"url\":\"https:\/\/www.fda.gov\/drugs\/human-drug-compounding\/certain-bulk-drug-substances-use-compounding-may-present-significant-safety-risks\",\"note\":\"Current FDA LL-37 safety summary.\"}]","footnotes":""},"categories":[19],"tags":[],"class_list":["post-472","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-published-study-cases"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>LL-37 at the Ocular Surface: Expression and In-Vitro Antimicrobial Data - NHD<\/title>\n<meta name=\"description\" content=\"A frequently cited LL-37 paper examined expression in human ocular-surface cells and antimicrobial activity in laboratory assays. 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