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Andreev AY, Yusef YN, Avetisov SE, Osipyan GA, Domogatsky SP, Osidak EO. Collagen-Based Artificial Cornea for Lamellar Keratoplasty: An Early Case Report. Cornea 2024; 43:1181-1183. [PMID: 38780428 DOI: 10.1097/ico.0000000000003583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/23/2024] [Indexed: 05/25/2024]
Abstract
PURPOSE The aim of this study was to evaluate Viscoll collagen membrane (VCM) for lamellar keratoplasty. METHODS A 54-year-old man with grade 4 recurrent pterygium underwent lamellar keratoplasty using VCM as the graft material. Standard keratoplasty postoperative treatments, including topical antibiotic-corticosteroid and artificial tears, were administered. RESULTS Complete graft epithelialization was achieved after 4 days of the surgery. Follow-up at 9 months showed no pterygium recurrence as well as good integration of the VCM graft into the surrounding tissues with preserved transparency. CONCLUSIONS This case demonstrated that VCM possesses great potential as an alternative to the human donor cornea for lamellar keratoplasty; however, the application of VCM for lamellar keratoplasty still needs additional evaluation.
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Affiliation(s)
- Andrey Yurevich Andreev
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
- I.M. Sechenov First Moscow State Medical University, Moscow, Russia
- Imtek Ltd., Moscow, Russia
| | | | - Sergey Eduardovich Avetisov
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
- I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | | | - Sergey Petrovich Domogatsky
- Imtek Ltd., Moscow, Russia
- FSBI National Medical Research Centre of Cardiology Name after Academician E.I. Chazov of the Ministry of Health of the Russian Federation, Moscow, Russia; and
| | - Egor Olegovich Osidak
- Imtek Ltd., Moscow, Russia
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
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Yu Y, Andreev AY, Rogovaya OS, Subbot AM, Domogatsky SP, Avetisov SE, Vorotelyak EA, Osidak EO. Matrix-Assisted Cell Transplantation for the Treatment of Limbal Stem Cell Deficiency in a Rabbit Model. Biomedicines 2024; 12:101. [PMID: 38255207 PMCID: PMC10813050 DOI: 10.3390/biomedicines12010101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/26/2023] [Accepted: 12/28/2023] [Indexed: 01/24/2024] Open
Abstract
With the development of regenerative medicine in ophthalmology, the identification of cells with high proliferative potential in the limbal area has attracted the attention of ophthalmologists and offered a new option for treatment in clinical practice. Limbal stem cell deficiency (LSCD) is an identified eye disease with a difficult and negative outcome, for which the traditional treatment is keratoplasty. This study sought to evaluate the efficacy of matrix-assisted cell transplantation consisting of in vitro-cultured autologous limbal stem cells (LSCs) and type I collagen for the treatment of LSCD in rabbits. LSCD was induced in 10 rabbits by a combination of mechanical limbectomy and alkali burns. Cells were cultured on a plate for 14 days before being transferred to a collagen-based matrix for another 7 days. Rabbits were divided into two groups as follows: the experimental group (five rabbits) received matrix-assisted cell transplantation, while the control group (five rabbits) received only conservative therapy with anti-inflammatory eye drops. During the postoperative period, all rabbits were examined using slit-lamp biomicroscopy with photo-registration and fluorescent staining, impression cytology and anterior segment optical coherence tomography (AS-OCT). Rabbits were euthanized at 30 and 120 days, and their corneas were processed for histology and immunohistochemistry. As a consequence, rabbits in the experimental group demonstrated the restoration of the corneal epithelium and transparency without epithelial defects. Moreover, goblet cells were absent in the central zone of the corneal epithelium. In conclusion, our new method of treatment enhanced the corneal surface and is an effective method of treatment for LSCD in rabbits.
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Affiliation(s)
- Yang Yu
- Department of Eye Diseases, I.M. Sechenov First Moscow State Medical University, 8-2, Trubetskaya Street, 119991 Moscow, Russia
| | - Andrey Yurevich Andreev
- Department of Eye Diseases, I.M. Sechenov First Moscow State Medical University, 8-2, Trubetskaya Street, 119991 Moscow, Russia
- Department of Pathologies of Optical Medium of the Eye, Krasnov Research Institute of Eye Diseases, 11A Rossolimo St., 119021 Moscow, Russia
- R&D Department, Imtek Ltd., 3rd Cherepkovskaya 15A, 121552 Moscow, Russia;
| | - Olga Sergeevna Rogovaya
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology Russian Academy of Science, 26, Vavilova St., 119334 Moscow, Russia
| | - Anastasia Mikhailovna Subbot
- Laboratory of Basic Research in Ophthalmology, Krasnov Research Institute of Eye Diseases, 11A Rossolimo St., 119021 Moscow, Russia
| | - Sergey Petrovich Domogatsky
- R&D Department, Imtek Ltd., 3rd Cherepkovskaya 15A, 121552 Moscow, Russia;
- Laboratory of Immunochemistry, FSBI National Medical Research Centre of Cardiology Name after Academician E.I. Chazov of the Ministry of Health of the Russian Federation, Academika Chazova St., 15A, 121552 Moscow, Russia
| | - Sergey Eduardovich Avetisov
- Department of Eye Diseases, I.M. Sechenov First Moscow State Medical University, 8-2, Trubetskaya Street, 119991 Moscow, Russia
- Department of Pathologies of Optical Medium of the Eye, Krasnov Research Institute of Eye Diseases, 11A Rossolimo St., 119021 Moscow, Russia
| | - Ekaterina Andreevna Vorotelyak
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology Russian Academy of Science, 26, Vavilova St., 119334 Moscow, Russia
| | - Egor Olegovich Osidak
- R&D Department, Imtek Ltd., 3rd Cherepkovskaya 15A, 121552 Moscow, Russia;
- Laboratory of Cellular Hemostasis and Thrombosis, Dmitry Rogachev National Medical Research Center of Paediatric Haematology, Oncology and Immunology, Samora Machel St., 1, 117997 Moscow, Russia
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Beckmann L, Cai Z, Margolis M, Fang R, Djalilian A, Zhang HF. Recent advances in optical coherence tomography for anterior segment imaging in small animals and their clinical implications. Ocul Surf 2022; 26:222-233. [PMID: 36195237 PMCID: PMC10040227 DOI: 10.1016/j.jtos.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 12/05/2022]
Abstract
Anterior segment optical coherence tomography (AS-OCT) is a rapidly evolving area of OCT imaging, providing high-resolution and non-invasive volumetric imaging of the anterior segment. This review focuses on recent advances in AS-OCT imaging in small animals, which we categorize into ultrahigh-resolution, spectroscopic, magnetomotive, polarization-sensitive, and angiographic AS-OCTs. We summarize their technical foundations, review their applications to small animal imaging, and briefly discuss their current and future clinical applications.
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Affiliation(s)
- Lisa Beckmann
- Department of Biomedical Engineering, Northwestern University, Evanston IL, USA
| | - Zhen Cai
- Department of Biomedical Engineering, Northwestern University, Evanston IL, USA; Currently with Department of Ophthalmology, Tongji Medical College, HuaZhong University of Science and Technology, Wuhan, Hubei, China
| | - Mathew Margolis
- Department of Ophthalmology and Visual Science, University of Illinois at Chicago, Chicago IL, USA
| | - Raymond Fang
- Department of Biomedical Engineering, Northwestern University, Evanston IL, USA
| | - Ali Djalilian
- Department of Ophthalmology and Visual Science, University of Illinois at Chicago, Chicago IL, USA
| | - Hao F Zhang
- Department of Biomedical Engineering, Northwestern University, Evanston IL, USA.
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Corneal Stroma Regeneration with Collagen-Based Hydrogel as an Artificial Stroma Equivalent: A Comprehensive In Vivo Study. Polymers (Basel) 2022; 14:polym14194017. [PMID: 36235965 PMCID: PMC9572218 DOI: 10.3390/polym14194017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/21/2022] [Accepted: 09/22/2022] [Indexed: 11/17/2022] Open
Abstract
Restoring the anatomical and functional characteristics of the cornea using various biomaterials is especially relevant in the context of a global shortage of donor tissue. Such biomaterials must be biocompatible, strong, and transparent. Here, we report a Viscoll collagen membrane with mechanical and optical properties suitable for replacing damaged stromal tissue. After removing a portion of the stroma, a Viscoll collagen membrane was implanted into the corneas of rabbits. After 6 months, the active migration of host cells into Viscoll collagen membranes was noted, with the preservation of corneal transparency in all experimental animals. Effective integration of the Viscoll collagen membrane with corneal tissue promoted nerve regeneration in vivo, as confirmed by in vivo confocal microscopy. We also demonstrated the safety and efficacy of the Viscoll collagen membrane for corneal stroma regeneration. Thus, in combination with the proposed packaging format that provides long-term storage of up to 10 months, this material has great potential for replacing and regenerating damaged stromal tissues.
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