In vivo confocal microscopy findings after Descemet stripping only with and without topical ripasudil supplementation in Fuchs endothelial dystrophy
Canadian Journal of Ophthalmology, ISSN: 0008-4182, Vol: 59, Issue: 6, Page: e682-e690
2024
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Studies from University of British Columbia Add New Findings in the Area of Fuchs' Endothelial Dystrophy (In Vivo Confocal Microscopy Findings After Descemet Stripping Only With and Without Topical Ripasudil Supplementation In Fuchs Endothelial ...)
2024 DEC 17 (NewsRx) -- By a News Reporter-Staff News Editor at Health & Medicine Daily -- Investigators discuss new findings in Eye Diseases and
Article Description
To report corneal epithelial and corneal endothelial cell (CEC) changes following Descemet stripping only (DSO) with and without topical ripasudil using in vivo confocal microscopy (IVCM). Prospective interventional case series of patients who underwent DSO for Fuchs endothelial dystrophy with or without postoperative topical ripasudil (4%, 6 times per day). Patients underwent IVCM (ConfoScan 3; NIDEK Technologies, Padova, Italy) at baseline, monthly until corneal clearance, and then every 6 months. En face images were obtained of the epithelium, anterior and posterior corneal stroma, and endothelium of the central and superior cornea. The epithelial and endothelial layer images were evaluated qualitatively. IVCM imaging was obtained from 34 patients, 26 (76%) of whom were supplemented with ripasudil and 8 (24%) of whom were not. Two eyes (6%) did not clear and required a keratoplasty. IVCM confirmed epithelial and endothelial cell morphology changes and reestablishment of a CEC mosaic. Hyperreflective nuclei, pleomorphism, multinucleated cells, and pseudoguttae were identified within the descemetorhexis. In patients on ripasudil, epithelial cells demonstrated transition from stratified squamous to spindle cell shape in regions of ripasudil-induced honeycomb edema. Migrating cells adopted an amoeboid shape and cytoplasm elongation when crossing to central stroma. Transient epithelial cell morphology changes and endothelial cell amoeboid shape changes appear to be uniquely associated with ripasudil. Rarely, figures were noted in both ripasudil-treated and non-ripasudil-treated corneas that resembled mitotic bodies. CECs display a range of adaptive mechanisms during healing to re-form the endothelial mosaic following DSO. Ripasudil administration appears to induce unique epithelial and endothelial cell changes. Présenter un rapport sur les modifications visibles à la microscopie confocale in vivo (MCIV) dans les cellules épithéliales et endothéliales cornéennes à la suite d'un descemetorhexis seul (DSO, pour Descemet stripping only ) avec ou sans collyre de ripasudil. Étude prospective d'intervention portant sur une série de patients qui ont subi un DSO en raison d'une dystrophie endothéliale de Fuchs, avec ou sans administration postopératoire d'un collyre de ripasudil (4 %; 6 fois par jour). Les patients ont été examinés sous MCIV (ConfoScan 3; NIDEK Technologies, Padoue, Italie) au départ, tous les mois jusqu’à l’éclaircissement de la cornée et tous les 6 mois par la suite. On a obtenu des images en face de l’épithélium, du stroma cornéen antérieur et postérieur et de l'endothélium de la cornée centrale et supérieure. On a procédé à une évaluation qualitative des images des couches épithéliale et endothéliale. On a obtenu des images à la MCIV chez 34 patients, dont seulement 26 (76 %) recevaient le ripasudil. Aucun éclaircissement ne s'est produit dans 2 yeux (6 %) qui ont dû faire l'objet d'une kératoplastie. La MCIV a confirmé la présence de modifications morphologiques des cellules épithéliales et endothéliales et d'un rétablissement de la mosaïque endothéliale. Ont été identifiés des noyaux hyperréflectifs, des instances de pléomorphisme, des cellules multinucléées et des zones pseudoguttatées dans l'aire du descemetorhexis même. Chez les patients du groupe ripasudil, les cellules épithéliales, qui avaient un aspect pavimenteux stratifié, ont pris la forme d'un fuseau dans les zones d’œdème hexagonal causées par le ripasudil. Les cellules migratrices ont pris une forme amiboïde, et leur cytoplasme s'est allongé pendant leur déplacement vers le stroma central. Les modifications transitoires de la morphologie des cellules épithéliales de même que l'adoption d'une forme amiboïde par les cellules endothéliales semblent être des phénomènes uniques à la présence de ripasudil. Plus rarement, on a observé des formes ressemblant à des corps mitotiques dans les cornées traitées ou non par le ripasudil. Les cellules endothéliales cornéennes font appel à divers mécanismes d'adaptation pendant la cicatrisation pour former à nouveau la mosaïque endothéliale à la suite d'un DSO. Le ripasudil semble être responsable de modifications uniques de la part des cellules épithéliales et endothéliales.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0008418224000644; http://dx.doi.org/10.1016/j.jcjo.2024.02.016; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85188568231&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/38503406; https://linkinghub.elsevier.com/retrieve/pii/S0008418224000644; https://dx.doi.org/10.1016/j.jcjo.2024.02.016
Elsevier BV
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