|
1
|
Chung HS, Nam S, Lee KE, Jeong DS, Oh S, Sunwoo JH, Lee H, Kim JY, Tchah H. Biocompatibility and Transplantation Efficacy of the C-Clear Artificial Cornea in a Rabbit Chemical Burn Model. Bioengineering (Basel) 2023; 10:1235. [PMID: 37892965 PMCID: PMC10604526 DOI: 10.3390/bioengineering10101235] [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: 09/18/2023] [Revised: 10/17/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
We investigated the bioavailability and stability of a C-Clear artificial cornea in a rabbit chemical burn model. Thirty-six rabbits were divided into a control group (n = 16) and a chemical burn group that used NaOH solution (n = 20). After lamellar dissection, the central posterior lamella was excised using a 3 mm diameter trephine, and an artificial cornea was transplanted into the lamellar pocket. After 2 weeks, the central anterior lamella was excised using a 3 mm diameter trephine to secure a clean visual axis. We examined the anterior segment of the eyes weekly for 12 weeks after transplantation. Successful subjects whose artificial corneas were maintained stably for 12 weeks were euthanized and underwent histologic examinations. Artificial corneas remained stable for up to 12 weeks in 62.5 and 50% of rabbits in the control and chemical burn groups, respectively. Two rabbits in the chemical burn group showed the formation of a retroprosthetic membrane, and one rabbit with visual axis blockage underwent membrane removal using a Nd:YAG laser. In histologic examinations, adhesion between artificial cornea and peripheral corneal stoma was observed. In conclusion, we confirmed structural stability and biocompatibility of the C-Clear artificial cornea for up to 12 weeks after implantation in control and chemical burn groups.
Collapse
Affiliation(s)
- Ho-Seok Chung
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (H.-S.C.); (S.N.); (K.-E.L.); (S.O.); (J.-H.S.); (H.L.); (J.-Y.K.)
| | - Sanghyu Nam
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (H.-S.C.); (S.N.); (K.-E.L.); (S.O.); (J.-H.S.); (H.L.); (J.-Y.K.)
| | - Ko-Eun Lee
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (H.-S.C.); (S.N.); (K.-E.L.); (S.O.); (J.-H.S.); (H.L.); (J.-Y.K.)
| | - Do-Sun Jeong
- TE BioS Co., Ltd., Cheongju 28160, Republic of Korea;
| | - Seheon Oh
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (H.-S.C.); (S.N.); (K.-E.L.); (S.O.); (J.-H.S.); (H.L.); (J.-Y.K.)
| | - Jeong-Hye Sunwoo
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (H.-S.C.); (S.N.); (K.-E.L.); (S.O.); (J.-H.S.); (H.L.); (J.-Y.K.)
| | - Hun Lee
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (H.-S.C.); (S.N.); (K.-E.L.); (S.O.); (J.-H.S.); (H.L.); (J.-Y.K.)
- Center for Cell Therapy, Asan Institute for Life Science, Seoul 05505, Republic of Korea
| | - Jae-Yong Kim
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (H.-S.C.); (S.N.); (K.-E.L.); (S.O.); (J.-H.S.); (H.L.); (J.-Y.K.)
| | - Hungwon Tchah
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea; (H.-S.C.); (S.N.); (K.-E.L.); (S.O.); (J.-H.S.); (H.L.); (J.-Y.K.)
- Department of Ophthalmology, Myung-Gok Eye Research Institute, Kim’s Eye Hospital, Konyang University College of Medicine, Seoul 07301, Republic of Korea
| |
Collapse
|
|
2
|
Jeon YJ, Koh KM, Hwang KY, Kim KY. Subacute Methicillin-resistant Coagulase-Negative Staphylococcus hominis Endophthalmitis after Penetrating Keratoplasty Re-operation. JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY 2022. [DOI: 10.3341/jkos.2022.63.5.478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Purpose: To report a case of subacute methicillin-resistant coagulase-negative Staphylococcus hominis endophthalmitis after re-operation for penetrating keratoplasty in a patient who had a penetrating keratoplasty rejection.Case summary: A 74-year-old man with underlying diabetes and hypertension who underwent bilateral penetrating keratoplasty at another hospital underwent penetrating keratoplasty reoperation due to corneal transplant rejection in the right eye. He had a history of end-stage glaucoma in the right eye and the visual acuity was finger counting at 30 cm. About 25 days postoperatively, the corneal epithelial defect was first found. Treatment based on suspicion of herpes simplex virus infection did not result in improvement and endophthalmitis was suspected in the right eye about 35 days after surgery. Anterior chamber irrigation, pars planar vitrectomy, and intravitreal antibiotic injection were performed. Culture revealed methicillin-resistant coagulase negative Staphylococcus hominis. After 2 months of treatment, the anterior chamber and vitreous inflammation decreased and best corrected visual acuity in the right eye recovered to 0.06.Conclusions: Subacute endophthalmitis caused by methicillin-resistant coagulase-negative Staphylococcus may occur after penetrating keratoplasty. Transplant failure due to infection can be avoided with vitrectomy and antibiotic treatment at the right time.
Collapse
|