Scar formation in the presence of mitomycin C and the anti-fibrotic antibody in a rabbit model of glaucoma microsurgery: A pilot study.

Autor:	Shukla AG; Wills Eye Hospital, Philadelphia, PA, USA.; Glaucoma Division, Edward S. Harkness Eye Institute, Columbia University Irving Medical Center, New York, NY, USA., Milman T; Wills Eye Hospital, Philadelphia, PA, USA., Fertala J; Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA., Steplewski A; Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA., Fertala A; Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2023 Apr 10; Vol. 9 (4), pp. e15368. Date of Electronic Publication: 2023 Apr 10 (Print Publication: 2023).
DOI:	10.1016/j.heliyon.2023.e15368
Abstrakt:	Purpose: This study aimed to evaluate the utility of a rationally engineered antibody that directly blocks collagen fibrillogenesis to reduce scar tissue formation associated with subconjunctival glaucoma surgery. Material and Methods: Fourteen eyes of 7 adult rabbits underwent glaucoma filtering surgery using XEN 45 Gel Stent. The rabbits' eyes were divided randomly into three treatment groups: (i) treated with the antibody, (ii) treated with mitomycin C, and (iii) treated with the antibody and mitomycin C. Following surgeries, the intraocular pressure and bleb appearance were evaluated in vivo. The rabbits were sacrificed 8 weeks after the surgery, and their eyes were harvested and processed for tissue analysis. Subsequently, tissue samples were analyzed microscopically for fibrotic tissue and cellular markers of inflammation. Moreover, the collagen-rich fibrotic tissue formed around the stents was analyzed using quantitative histology and infrared spectroscopy. The outcomes of this study were analyzed using the ANOVA test. Results: This study demonstrated no significant differences in intraocular pressure, bleb appearance, or presence of complications such as bleb leak among the treatment groups. In contrast, we observed significant differences among the subpopulations of collagen fibrils formed within scar neo-tissue. Based on the spectroscopic analyses, we determined that the relative content of mature collagen cross-links in the antibody-treated group was significantly reduced compared to other groups. Conclusions: Direct blocking of collagen fibrillogenesis with the anti-collagen antibody offers potentially beneficial effects that may reduce the negative impact of the subconjunctival scarring associated with glaucoma filtering surgery. Competing Interests: The authors declare the following conflict of interests: Andrzej Steplewski and Andrzej Fertala are inventors of a patent that protects the sequence of the antibody employed here. (© 2023 The Authors.)
Databáze:	MEDLINE
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