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Zhang K, Zhang S, He W, Lu Y, Zhu X. Preclinical biocompatibility and biosafety evaluation of a new foldable brown diaphragm intraocular lens: An in vitro and in vivo study. Clin Exp Ophthalmol 2023. [PMID: 37169585 DOI: 10.1111/ceo.14226] [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: 07/18/2022] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 05/13/2023]
Abstract
BACKGROUND A new foldable brown diaphragm intraocular lens (IOL) was preclinically evaluated in vitro and in vivo by comparing its biocompatibility and biosafety with those of a commercially available IOL. METHODS The new foldable iris-diaphragm IOL is composed of hydrophobic acrylic material, with a transparent optical zone and surrounding brown diaphragm. Cellular experiments evaluating lens epithelial cell morphology, adhesion, and migration were conducted to exclude cytotoxic effects. Twelve New Zealand rabbits underwent implantation of a brown diaphragm IOL in one eye, whilst an additional 12 had a commercially available foldable IOL implanted, followed by slit-lamp evaluations of inflammatory reactions and capsular opacification. Corneal endothelial cells density was measured before and after implantation. Aqueous humour samples were obtained weekly for liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis to investigate dye leakage from the brown-diaphragm IOL. Following 12 weeks of observation, haematoxylin and eosin staining of ocular tissue and scanning electron microscopy (SEM) of the IOL surface were performed. RESULTS Results from in vivo experiments found no statistically significant differences between the two groups in terms of postoperative inflammation and capsular biocompatibility. No significant changes in corneal endothelial cell density were observed in either group before and after surgery. LC-MS/MS analysis showed that the target dye was not detected in aqueous humour samples. Histopathology of ocular sections and SEM imaging of IOL surfaces showed similar changes in both groups. CONCLUSIONS The newly invented IOL showed good biocompatibility and biosafety. Combined with its foldability and peripheral shading, it could be a new choice for patients with iris defects.
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Affiliation(s)
- Keke Zhang
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia (Fudan University), Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai, China
| | - Shaohua Zhang
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia (Fudan University), Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai, China
| | - Wenwen He
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia (Fudan University), Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai, China
| | - Yi Lu
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia (Fudan University), Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai, China
| | - Xiangjia Zhu
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia (Fudan University), Shanghai, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai, China
- State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
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Expression of retinoic acid signaling components ADH7 and ALDH1A1 is reduced in aniridia limbal epithelial cells and a siRNA primary cell based aniridia model. Exp Eye Res 2019; 179:8-17. [DOI: 10.1016/j.exer.2018.10.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 08/29/2018] [Accepted: 10/03/2018] [Indexed: 01/31/2023]
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Qiu JJ, Zhang Q, Geng ZX, Liu M, Zhong ZL, Chen JJ, Liu F. Identification of a novel PAX6 mutation in a Chinese family with aniridia. BMC Ophthalmol 2019; 19:10. [PMID: 30621664 PMCID: PMC6325832 DOI: 10.1186/s12886-018-1009-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/10/2018] [Indexed: 01/04/2023] Open
Abstract
Background This study aims to investigate the clinical characterization and causative genetic defect of a four-generation Chinese family with autosomal dominant aniridia. Methods The recruited family members underwent comprehensive routine and ophthalmic examinations, and Sanger sequencing was performed to screen the mutation in PAX6. Results A novel heterozygous PAX6 deletion c.435_445delTAGCGAAAAGC (p.Ser146ThrfsX9) in exon 7 was identified in all affected individuals, but this was absent in any of the unaffected family members and in the 200 unrelated controls. Conclusion A novel deletion in the PAX6 gene was identified in a Chinese family associated with aniridia, which expands the spectrum of the PAX6 mutation and its associated phenotype.
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Affiliation(s)
- Jing-Jing Qiu
- Department of Ophthalmology, the Second Affiliated Hospital of Nanchang University, No.1 Minde Road, Donghu District, Nanchang, 330006, China
| | - Qian Zhang
- Department of Ophthalmology, the Second Affiliated Hospital of Nanchang University, No.1 Minde Road, Donghu District, Nanchang, 330006, China.
| | - Zi-Xin Geng
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, 200092, China.,Department of Medical Genetics Tongji University School of Medicine, Shanghai, 200092, China
| | - Min Liu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, 200092, China.,Department of Medical Genetics Tongji University School of Medicine, Shanghai, 200092, China
| | - Zi-Lin Zhong
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, 200092, China.,Department of Medical Genetics Tongji University School of Medicine, Shanghai, 200092, China
| | - Jian-Jun Chen
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, 200092, China.,Department of Medical Genetics Tongji University School of Medicine, Shanghai, 200092, China
| | - Fei Liu
- Department of Ophthalmology, the Second Affiliated Hospital of Nanchang University, No.1 Minde Road, Donghu District, Nanchang, 330006, China.
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Latta L, Viestenz A, Stachon T, Colanesi S, Szentmáry N, Seitz B, Käsmann-Kellner B. Human aniridia limbal epithelial cells lack expression of keratins K3 and K12. Exp Eye Res 2017; 167:100-109. [PMID: 29162348 DOI: 10.1016/j.exer.2017.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 09/13/2017] [Accepted: 11/17/2017] [Indexed: 01/12/2023]
Abstract
Aniridia is a rare disease of the eye that affects the iris, lens and the cornea. In about 90% of the cases, patients showed a loss of PAX6 function. Patients with aniridia often develop aniridia-related keratopathy (ARK), due to limbal stem cell insufficiency. The aim of this study was to determine the differentiation status of limbal epithelial cells (LECs) in patients with ARK. Epithelial cells were isolated from the limbus region of two patients with aniridia and cultured in KSFM medium supplemented with EGF and BPE. Normal cells were obtained from limbus region of cadaveric control patients. Cells were analyzed with RT-PCR, qPCR and Western blot to evaluate expression of the developmental transcription factor, PAX6, potential stem cell markers, ΔNp63α and ABCG2, and corneal differentiation markers, keratin 12 (K12) and K3. Conjunctival differentiation markers, keratin 13 (K13) and K19 were also investigated. Cells were immunostained to evaluate K3, PAX6, and p63α protein expression. Protein coding sequence of PAX6 from patient LEC-cDNA was cloned and sequenced. RT-PCR showed that K3 and K12 transcripts were absent from patient cells, but present in healthy control preparations. Transcription levels of PAX6, ABCG2, and p63α of aniridia patients show no differences compared to normal control cells. Western blot showed reduced PAX6, protein levels in aniridia-LECs compared to control-LECs. Immunostaining also showed reduced PAX6 and K3 expression in aniridia-LECs compared to control-LECs. One aniridia patient showed a loss of stop codon in half of the cloned transcripts. In the second aniridia patient mRNA degradation through nonsense mediated decay seems to be very likely since we could not identify the mutation c.174C > T (Refseq. NM_000280), or misspliced transcripts in cDNA. We identified decreased PAX6 protein levels in aniridia patients in addition to decreased K12 mRNA levels compared to control cells. This result indicates an altered differentiation of limbal epithelial cells of aniridia patients. Further studies are necessary to evaluate the mechanism of differentiation of limbal epithelial cells in aniridia.
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Affiliation(s)
- Lorenz Latta
- Department of Ophthalmology, Saarland University Medical Center, Homburg, Saar, Germany.
| | - Arne Viestenz
- Department of Ophthalmology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Tanja Stachon
- Department of Ophthalmology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Sarah Colanesi
- Department of Ophthalmology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Nóra Szentmáry
- Department of Ophthalmology, Saarland University Medical Center, Homburg, Saar, Germany; Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Berthold Seitz
- Department of Ophthalmology, Saarland University Medical Center, Homburg, Saar, Germany
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Du J, Liu RQ, Ye L, Li ZH, Zhao FT, Jiang N, Ye LH, Shao Y. Analysis of corneal morphologic and pathologic changes in early-stage congenital aniridic keratopathy. Int J Ophthalmol 2017; 10:378-384. [PMID: 28393028 DOI: 10.18240/ijo.2017.03.09] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 07/06/2016] [Indexed: 11/23/2022] Open
Abstract
AIM To determine typical corneal changes of congenital aniridic keratopathy (CAK) using corneal topography and confocal systems, and to identify characteristics that might assist in early diagnosis. METHODS Patients with CAK and healthy control subjects underwent detailed ophthalmic examinations including axial length, corneal thickness, tear film condition, corneal topography, and laser-scanning in vivo confocal microscopy (IVCM). RESULTS In early stage aniridic keratopathy, Schirmer I test (SIT), break-up time (BUT), mean keratometry (mean K) and simulated keratometry (sim K) were reduced relative to controls (P<0.05), while simulation of corneal astigmatism (sim A) and corneal thickness were increased (P<0.05). In addition, significantly more eyes exhibited flat cornea compared with the control group. Inflammatory dendritic cells were present in the aniridic epithelium, with significantly increased density relative to controls (P<0.05). Palisade ridge-like features and abnormal cell morphology were observed in six out of sixteen CAK cases. In central cornea area, the aniridic corneas had the increased subbasal nerve density. CONCLUSION These changes in corneal morphology in borderline situations can be useful to confirm the diagnosis of CAK.
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Affiliation(s)
- Juan Du
- Department of Ophthalmology, the First People's Hospital of Shunde, Nanfang Medical University, Foshan 528300,Guangdong Province, China
| | - Rong-Qiang Liu
- Department of ophthalmology, the First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang 330006, Jiangxi Province, China; Postgraduate College, the Third hospital Affiliated of Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Lei Ye
- Department of ophthalmology, the First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang 330006, Jiangxi Province, China
| | - Zhi-Hui Li
- Department of Ophthalmology, the First People's Hospital of Shunde, Nanfang Medical University, Foshan 528300,Guangdong Province, China
| | - Feng-Tu Zhao
- Department of Ophthalmology, the First People's Hospital of Shunde, Nanfang Medical University, Foshan 528300,Guangdong Province, China
| | - Nan Jiang
- Department of ophthalmology, the First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang 330006, Jiangxi Province, China
| | - Lin-Hong Ye
- Department of ophthalmology, the First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang 330006, Jiangxi Province, China
| | - Yi Shao
- Department of ophthalmology, the First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang 330006, Jiangxi Province, China
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Mannino G, Abdolrahimzadeh B, Calafiore S, Anselmi G, Mannino C, Lambiase A. A review of the role of ultrasound biomicroscopy in glaucoma associated with rare diseases of the anterior segment. Clin Ophthalmol 2016; 10:1453-9. [PMID: 27536058 PMCID: PMC4975163 DOI: 10.2147/opth.s112166] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Ultrasound biomicroscopy is a non-invasive imaging technique, which allows high-resolution evaluation of the anatomical features of the anterior segment of the eye regardless of optical media transparency. This technique provides diagnostically significant information in vivo for the cornea, anterior chamber, chamber angle, iris, posterior chamber, zonules, ciliary body, and lens, and is of great value in assessment of the mechanisms of glaucoma onset. The purpose of this paper is to review the use of ultrasound biomicroscopy in the diagnosis and management of rare diseases of the anterior segment such as mesodermal dysgenesis of the neural crest, iridocorneal endothelial syndrome, phakomatoses, and metabolic disorders.
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Affiliation(s)
- Giuseppe Mannino
- Ophthalmology Unit, Saint Andrea Hospital, Department of Neurosciences, Mental Health and Sense Organs, University of Rome "Sapienza", Rome, Italy
| | | | - Silvia Calafiore
- Ophthalmology Unit, Saint Andrea Hospital, Department of Neurosciences, Mental Health and Sense Organs, University of Rome "Sapienza", Rome, Italy
| | - Gianmario Anselmi
- Ophthalmology Unit, Saint Andrea Hospital, Department of Neurosciences, Mental Health and Sense Organs, University of Rome "Sapienza", Rome, Italy
| | - Cristina Mannino
- Ophthalmology Unit, Saint Andrea Hospital, Department of Neurosciences, Mental Health and Sense Organs, University of Rome "Sapienza", Rome, Italy
| | - Alessandro Lambiase
- Department of Sense Organs, Ophthalmology Unit, University of Rome "Sapienza", Rome, Italy
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