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Izuagbe S, Roy J, Chatila A, Hoang LQ, Ea V, Vaish B, Co CM, Ly A, Wu H, Tang L. A 3D in vitro model for assessing the influence of intraocular lens: Posterior lens capsule interactions on lens epithelial cell responses. Exp Eye Res 2024; 244:109940. [PMID: 38782178 PMCID: PMC11246700 DOI: 10.1016/j.exer.2024.109940] [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: 12/28/2023] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 05/25/2024]
Abstract
Posterior Capsule Opacification (PCO), the most frequent complication of cataract surgery, is caused by the infiltration and proliferation of lens epithelial cells (LECs) at the interface between the intraocular lens (IOL) and posterior lens capsule (PLC). According to the "no space, no cells, no PCO" theory, high affinity (or adhesion force) between the IOL and PLC would decrease the IOL: PLC interface space, hinder LEC migration, and thus reduce PCO formation. To test this hypothesis, an in vitro hemisphere-shaped simulated PLC (sPLC) was made to mimic the human IOL: PLC physical interactions and to assess their influence on LEC responses. Three commercially available IOLs with different affinities/adhesion forces toward the sPLC, including Acrylic foldable IOL, Silicone IOL, and PMMA IOL, were used in this investigation. Using the system, the physical interactions between IOLs and sPLC were quantified by measuring the adhesion force and interface space using an adhesion force apparatus and Optical Coherence Tomography, respectively. Our data shows that high adhesion force and tight binding between IOL and sPLC contribute to a small interface space (or "no space"). By introducing LECs into the in vitro system, we found that, with small interface space, among all IOLs, acrylic foldable IOLs permitted the least extent of LEC infiltration, proliferation, and differentiation (or "no cells"). Further statistical analyses using clinical data revealed that weak LEC responses are associated with low clinical PCO incidence rates (or "no PCO"). The findings support that the in vitro system could simulate IOL: PLC interplays and predict IOLs' PCO potential in support of the "no space, no cells, no PCO" hypothesis.
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Affiliation(s)
- Samira Izuagbe
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Joyita Roy
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Amjad Chatila
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Le Quynh Hoang
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Vicki Ea
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Bhavya Vaish
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Cynthia M Co
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Aaron Ly
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Hongli Wu
- Department of Pharmaceutical Sciences, College of Pharmacy, North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA
| | - Liping Tang
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA.
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Yu Y, Zhang J, Wu H. Optimizing Mouse Primary Lens Epithelial Cell Culture: A Comprehensive Guide to Trypsinization. J Vis Exp 2024:10.3791/65912. [PMID: 38975789 PMCID: PMC11259111 DOI: 10.3791/65912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024] Open
Abstract
Lens epithelial cells (LECs) play multiple important roles in maintaining the homeostasis and normal function of the lens. LECs determine lens growth, development, size, and transparency. Conversely, dysfunctional LECs can lead to cataract formation and posterior capsule opacification (PCO). Consequently, establishing a robust primary LEC culture system is important to researchers engaged in lens development, biochemistry, cataract therapeutics, and PCO prevention. However, cultivating primary LECs has long presented challenges due to their limited availability, slow proliferation rate, and delicate nature. This study addresses these hurdles by presenting a comprehensive protocol for primary LEC culture. The protocol encompasses essential steps such as the formulation of an optimized culture medium, precise isolation of lens capsules, trypsinization techniques, subculture procedures, harvest protocols, and guidelines for storage and shipment. Throughout the culture process, cell morphology was monitored using phase-contrast microscopy. To confirm the authenticity of the cultured LECs, immunofluorescence assays were conducted to detect the presence and subcellular distribution of critical lens proteins, namely αA- and γ-crystallins. This detailed protocol equips researchers with a valuable resource for cultivating and characterizing primary LECs, enabling advancements in our comprehension of lens biology and the development of therapeutic strategies for lens-related disorders.
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Affiliation(s)
- Yu Yu
- Pharmaceutical Sciences, College of Pharmacy, University of North Texas Health Science Center
| | - Jinmin Zhang
- Pharmaceutical Sciences, College of Pharmacy, University of North Texas Health Science Center
| | - Hongli Wu
- Pharmaceutical Sciences, College of Pharmacy, University of North Texas Health Science Center; North Texas Eye Research Institute, University of North Texas Health Science Center;
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Morya AK, Nishant P, Ramesh PV, Sinha S, Heda A, Salodia S, Prasad R. Intraocular lens selection in diabetic patients: How to increase the odds for success. World J Diabetes 2024; 15:1199-1211. [PMID: 38983821 PMCID: PMC11229963 DOI: 10.4239/wjd.v15.i6.1199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 03/23/2024] [Accepted: 04/23/2024] [Indexed: 06/11/2024] Open
Abstract
The incidence of cataracts is significantly higher in diabetic individuals, particularly in younger age groups, with rates quadrupled in those under 65 and doubled in those over 65 compared to non-diabetics. Cataract surgery in diabetic patients poses many challenges: Poor epithelial healing, decreased corneal sensitivity, increased central corneal thickness, decreased endothelial cell count, variable topography, poor pupillary dilatation, anterior capsular phimosis, posterior capsular opacification (PCO), chances of progression of diabetic retinopathy (DR), zonular weakness, and vitreous prolapse and diabetic macular edema. Selection of an appropriate intraocular lens (IOL) is crucial for visual rehabilitation and monitoring DR. The choice of IOL in diabetic cataract patients is a challenging scenario. Square-edge IOLs are favored for their capacity to mitigate PCO, whereas hydrophilic counterparts may incur calcification in the setting of proliferative DR. The advisability of premium IOLs for achieving spectacle independence warrants judicious evaluation, particularly in the presence of advanced retinopathy. Optimal IOL placement within the capsular bag is advocated to minimize postoperative complications. Rigorous preoperative assessment and informed patient counseling regarding IOL options are indispensable for optimizing surgical outcomes. This review article covers various aspects regarding the choice of IOLs in different case scenarios and complications in the diabetic population.
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Affiliation(s)
- Arvind Kumar Morya
- Department of Ophthalmology, All India Institute of Medical Sciences, Hyderabad 508126, Telangana, India
| | - Prateek Nishant
- Department of Ophthalmology, ESIC Medical College, Patna 801113, Bihar, India
| | - Prasanna Venkatesh Ramesh
- Department of Glaucoma and Research, Mahathma Eye Hospital Private Limited, Trichy 620017, Tamil Nadu, India
| | - Sony Sinha
- Department of Ophthalmology-Vitreo-Retina, Neuro-Ophthalmology and Oculoplasty, All India Institute of Medical Sciences, Patna, Patna 801507, Bihar, India
| | - Aarti Heda
- Department of Ophthalmology, National Institute of Ophthalmology, Pune 411000, Maharashtra, India
| | - Sarika Salodia
- Department of Safety, Global Medical Safety, Lundbeck, Singapore 307591, Singapore
| | - Ripunjay Prasad
- Department of Ophthalmology, RP Eye Institute, Delhi 110001, India
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Levy-Clarke GA, Newcomb CW, Ying GS, Groth SL, Kothari S, Payal A, Begum H, Liesegang TL, Foster CS, Jabs DA, Nussenblatt R, Rosenbaum JT, Sen HN, Suhler EB, Thorne JE, Bhatt NP, Dreger KA, Buchanich JM, Kempen JH, Gangaputra S. Posterior capsular opacification and YAG laser capsulotomy in uveitis patients following cataract surgery. CANADIAN JOURNAL OF OPHTHALMOLOGY 2024:S0008-4182(24)00140-6. [PMID: 38815957 DOI: 10.1016/j.jcjo.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 03/04/2024] [Accepted: 05/06/2024] [Indexed: 06/01/2024]
Abstract
OBJECTIVE To evaluate the incidence of visually significant posterior capsule opacification (PCO with visual acuity ≤20/50) and the incidence of Nd:YAG laser capsulotomy in the year following cataract surgery for uveitic eyes. METHOD Patients were identified from the Systemic Immunosuppressive Therapy for Eye Diseases (SITE) Cohort Study using a standardized chart review process. RESULTS Among 1,855 uveitic eyes of 1,370 patients who had undergone cataract surgery, visually significant PCO occurred in 297 eyes (16%), and YAG laser capsulotomy was done in 407 eyes (22%) within the first year following surgery. Higher odds of developing 20/50 visual acuity attributed to PCO were noted in children and young adults compared with adults older than 65 years of age (overall p = 0.03). Poorer preoperative visual acuity (overall p = 0.0069) and postoperative inflammation (odds ratio [OR] = 1.83; 95% CI, 1.37-2.45; p < 0.0001) were associated with PCO incidence. In multivariable analysis, risk factors for YAG laser capsulotomy were younger age groups compared with those older than 65 years of age at the time of surgery (adjusted OR [aOR] = 1.90-2.24; 95% CI, 1.90-2.24; overall p = 0.0007), female sex (aOR = 1.37; 95% CI, 1.03-1.82; p = 0.03), postoperative active inflammation (aOR = 165; 95% CI, 1.27-2.16; overall p < 0.0001), extracapsular cataract extraction compared with phacoemulsification (aOR = 1.70; 95% CI, 1.17-2.47; overall p < 0.0001), and insertion of an intraocular lens (aOR = 4.60; 95% CI, -2.29-9.25; p < 0.0001). Black race was associated with lower YAG laser capsulotomy incidence than Whites (aOR = 0.36; 95% CI, 0.24-0.52; overall p < 0.0001). CONCLUSIONS Vision-reducing (≤20/50) PCO is common, occurring in about one sixth of uveitic eyes within 1 year of cataract surgery; a higher number (22%) of eyes underwent YAG laser capsulotomy within the first year. Age and postoperative inflammation following cataract surgery are the variables most associated with the incidence of visually significant PCO and YAG laser capsulotomy.
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Affiliation(s)
- Grace A Levy-Clarke
- Department of Ophthalmology, West Virginia University Eye Institute, Morgantown, WV; Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, MD
| | - Craig W Newcomb
- Center for Clinical Epidemiology and Biostatistics, Department of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Gui-Shuang Ying
- Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Sylvia L Groth
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, TN
| | - Srishti Kothari
- Division of Child Care Services, New York State Office of Children and Family Services, Westchester Regional Office, Valhalla, NY
| | - Abhishek Payal
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Hosne Begum
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Teresa L Liesegang
- Department of Ophthalmology, Oregon Health and Science University, Portland, OR
| | - C Stephen Foster
- Department of Ophthalmology, Harvard Medical School, Boston, MA; Massachusetts Eye Research and Surgery Institution, Waltham, MA
| | - Douglas A Jabs
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD; Center for Clinical Trials and Evidence Synthesis, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Robert Nussenblatt
- Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, MD
| | - James T Rosenbaum
- Department of Ophthalmology, Oregon Health and Science University, Portland, OR; Department of Public Health and Preventive Medicine, Oregon Heath and Science University, Portland, OR; Legacy Devers Eye Institute, Portland, OR
| | - H Nida Sen
- Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, MD
| | - Eric B Suhler
- Department of Ophthalmology, Oregon Health and Science University, Portland, OR; Portland Veteran's Affairs Medical Center, Portland, OR
| | - Jennifer E Thorne
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD; Center for Clinical Trials and Evidence Synthesis, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Nirali P Bhatt
- Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Kurt A Dreger
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Population, Family, and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Jeanine M Buchanich
- Center for Occupational Biostatistics and Epidemiology, University of Pittsburgh School of Public Health, Pittsburgh, PA
| | - John H Kempen
- Department of Ophthalmology, Harvard Medical School, Boston, MA; Sight for Souls, Fort Myers, FL; Departments of Global Health and Social Medicine, Harvard Medical School, Boston, MA; MCM Eye Unit, MyungSung Christian Medical Center (MCM) General Hospital and MyungSung Medical School, Addis Ababa, Ethiopia; Department of Ophthalmology, Addis Ababa University School of Medicine, Addis Ababa, Ethiopia
| | - Sapna Gangaputra
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, TN.
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Cunha M, Elhaddad O, Yahalomi T, Avadhanam V, Tole D, Darcy K, Levinger E, Tuuminen R, Achiron A. Type 1 and type 2 diabetes predisposed to higher Nd:YAG capsulotomy rates following cataract surgery: analysis of 53,471 consecutive cases. CANADIAN JOURNAL OF OPHTHALMOLOGY 2024:S0008-4182(24)00057-7. [PMID: 38513717 DOI: 10.1016/j.jcjo.2024.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 01/01/2024] [Accepted: 02/25/2024] [Indexed: 03/23/2024]
Abstract
OBJECTIVE To assess the effect of diabetes type on Nd:YAG capsulotomy rates following cataract surgery. DESIGN A retrospective cohort study. METHODS All patients who underwent cataract extraction at the Department of Ophthalmology, Bristol Eye Hospital, Bristol, UK, between 2003 and 2017 were included. The Nd:YAG capsulotomy rate following cataract surgery was assessed and compared between nondiabetic, type 1 diabetes (T1D), and type 2 diabetes (T2D) patients. Multivariate Cox regression analysis controlling for age and sex was used to estimate hazard ratios for Nd:YAG laser capsulotomies. RESULTS Included were 53,471 consecutive cataract surgeries. Overall, 42,651 eyes (79.8%) were in nondiabetic patients, 823 eyes (1.5%) were in T1D patients, and 9,997 eyes (18.7%) were in T2D patients. The mean follow-up time was 6.8 ± 4.2 years. In univariate analysis, the eyes of T1D patients (p < 0.001) and T2D patients (p = 0.003) had significantly higher Nd:YAG laser capsulotomy rates than the eyes of nondiabetic patients. In Cox regression analysis adjusted for the patient's age and sex, DM1 (HR 1.692, 95%CI 1.390-2.059, P<0.001) and DM2 (HR 1.157, 95%CI 1.075-1.244, P<0.001) remained significantly predictive for higher Nd:YAG laser capsulotomy rates. CONCLUSION In our large cohort study, patients with T1D and T2D were predisposed to high risk for Nd:YAG capsulotomy following cataract surgery. This study may be beneficial and raise awareness regarding the assessment of posterior capsular opacification development in pseudophakic diabetic patients, particularly those with T1D. The significance of ophthalmology screening for diabetes individuals is further supported by this issue.
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Affiliation(s)
- Mariana Cunha
- Helsinki Retina Research Group, University of Helsinki, Helsinki, Finland; Medical School, São Paulo State University (UNESP), São Paulo, Brazil
| | - Omar Elhaddad
- Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom; Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Tal Yahalomi
- Department of Ophthalmology, Samson Assuta Ashdod Hospital and Faculty of Health Sciences, Ben-Gurion University of the Negev, Negev, Israel.
| | - Venkata Avadhanam
- Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - Derek Tole
- Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - Kieran Darcy
- Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - Eliya Levinger
- Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Raimo Tuuminen
- Helsinki Retina Research Group, University of Helsinki, Helsinki, Finland; Department of Ophthalmology, Kymenlaakso Central Hospital, Kotka, Finland
| | - Asaf Achiron
- Tel-Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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VanSlyke JK, Boswell BA, Musil LS. Tonic ErbB signaling underlies TGFβ-induced activation of ERK and is required for lens cell epithelial to myofibroblast transition. Mol Biol Cell 2024; 35:ar35. [PMID: 38170570 PMCID: PMC10916858 DOI: 10.1091/mbc.e23-07-0294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/01/2023] [Accepted: 12/20/2023] [Indexed: 01/05/2024] Open
Abstract
Fibrosis is a major, but incompletely understood, component of many diseases. The most common vision-disrupting complication of cataract surgery involves differentiation of residual lens cells into myofibroblasts. In serum-free primary cultures of lens epithelial cells (DCDMLs), inhibitors of either ERK or of ErbB signaling prevent TGFβ from upregulating both early (fibronectin) and late (αSMA) markers of myofibroblast differentiation. TGFβ stimulates ERK in DCDMLs within 1.5 h. Kinase inhibitors of ErbBs, but not of several other growth factor receptors in lens cells, reduce phospho ERK to below basal levels in the absence or presence of TGFβ. This effect is attributable to constitutive ErbB activity playing a major role in regulating the basal levels pERK. Additional studies support a model in which TGFβ-generated reactive oxygen species serve to indirectly amplify ERK signaling downstream of tonically active ErbBs to mediate myofibroblast differentiation. ERK activity is in turn essential for expression of ErbB1 and ErbB2, major inducers of ERK signaling. By mechanistically linking TGFβ, ErbB, and ERK signaling to myofibroblast differentiation, our data elucidate a new role for ErbBs in fibrosis and reveal a novel mode by which TGFβ directs lens cell fate.
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Affiliation(s)
- Judy K. VanSlyke
- Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, Oregon 97239
| | - Bruce A. Boswell
- Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, Oregon 97239
| | - Linda S. Musil
- Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, Oregon 97239
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Liu X, Li J, Liu S, Long Y, Kang C, Zhao C, Wei L, Huang S, Luo Y, Dai B, Zhu X. Fabrication of a 3D bioprinting model for posterior capsule opacification using GelMA and PLMA hydrogel-coated resin. Regen Biomater 2024; 11:rbae020. [PMID: 38529352 PMCID: PMC10963077 DOI: 10.1093/rb/rbae020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 02/14/2024] [Accepted: 02/18/2024] [Indexed: 03/27/2024] Open
Abstract
Posterior capsule opacification (PCO) remains the predominant complication following cataract surgery, significantly impairing visual function restoration. In this study, we developed a PCO model that closely mimics the anatomical structure of the crystalline lens capsule post-surgery. The model incorporated a threaded structure for accurate positioning and observation, allowing for opening and closing. Utilizing 3D printing technology, a stable external support system was created using resin material consisting of a rigid, hollow base and cover. To replicate the lens capsule structure, a thin hydrogel coating was applied to the resin scaffold. The biocompatibility and impact on cellular functionality of various hydrogel compositions were assessed through an array of staining techniques, including calcein-AM/PI staining, rhodamine staining, BODIPY-C11 staining and EdU staining in conjunction with transwell assays. Additionally, the PCO model was utilized to investigate the effects of eight drugs with anti-inflammatory and anti-proliferative properties, including 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR), THZ1, sorbinil, 4-octyl itaconate (4-OI), xanthohumol, zebularine, rapamycin and caffeic acid phenethyl ester, on human lens epithelial cells (HLECs). Confocal microscopy facilitated comprehensive imaging of the PCO model. The results demonstrated that the GelMA 60 5% + PLMA 2% composite hydrogel exhibited superior biocompatibility and minimal lipid peroxidation levels among the tested hydrogels. Moreover, compared to using hydrogel as the material for 3D printing the entire model, applying surface hydrogel spin coating with parameters of 2000 rpm × 2 on the resin-based 3D printed base yielded a more uniform cell distribution and reduced apoptosis. Furthermore, rapamycin, 4-OI and AICAR demonstrated potent antiproliferative effects in the drug intervention study. Confocal microscopy imaging revealed a uniform distribution of HLECs along the anatomical structure of the crystalline lens capsule within the PCO model, showcasing robust cell viability and regular morphology. In conclusion, the PCO model provides a valuable experimental platform for studying PCO pathogenesis and exploring potential therapeutic interventions.
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Affiliation(s)
- Xin Liu
- Cataract and Lens Refractive Surgery Group, Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai 200031, People’s Republic of China
- NHC Key Laboratory of Myopia, Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Fudan University, Shanghai 200031, People’s Republic of China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, People’s Republic of China
| | - Jiale Li
- Engineering Research Center of Optical Instrument and System, the Ministry of Education, Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shuyu Liu
- Cataract and Lens Refractive Surgery Group, Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai 200031, People’s Republic of China
- NHC Key Laboratory of Myopia, Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Fudan University, Shanghai 200031, People’s Republic of China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, People’s Republic of China
| | - Yan Long
- Engineering Research Center of Optical Instrument and System, the Ministry of Education, Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ching Kang
- Cataract and Lens Refractive Surgery Group, Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai 200031, People’s Republic of China
- NHC Key Laboratory of Myopia, Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Fudan University, Shanghai 200031, People’s Republic of China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, People’s Republic of China
| | - Chen Zhao
- Cataract and Lens Refractive Surgery Group, Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai 200031, People’s Republic of China
- NHC Key Laboratory of Myopia, Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Fudan University, Shanghai 200031, People’s Republic of China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, People’s Republic of China
| | - Ling Wei
- Cataract and Lens Refractive Surgery Group, Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai 200031, People’s Republic of China
- NHC Key Laboratory of Myopia, Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Fudan University, Shanghai 200031, People’s Republic of China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, People’s Republic of China
| | - Shaoqi Huang
- Engineering Research Center of Optical Instrument and System, the Ministry of Education, Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yi Luo
- Cataract and Lens Refractive Surgery Group, Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai 200031, People’s Republic of China
- NHC Key Laboratory of Myopia, Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Fudan University, Shanghai 200031, People’s Republic of China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, People’s Republic of China
| | - Bo Dai
- Engineering Research Center of Optical Instrument and System, the Ministry of Education, Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xiangjia Zhu
- Cataract and Lens Refractive Surgery Group, Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai 200031, People’s Republic of China
- NHC Key Laboratory of Myopia, Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Fudan University, Shanghai 200031, People’s Republic of China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, People’s Republic of China
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Wang JD, Zhang JS, Li XX, Wang KJ, Li M, Mao YY, Wan XH. Knockout of TGF-β receptor II by CRISPR/Cas9 delays mesenchymal transition of Lens epithelium and posterior capsule opacification. Int J Biol Macromol 2024; 259:129290. [PMID: 38199534 DOI: 10.1016/j.ijbiomac.2024.129290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 12/16/2023] [Accepted: 01/04/2024] [Indexed: 01/12/2024]
Abstract
Posterior capsule opacification (PCO) is the most common postoperative complication of cataract surgery. Transforming growth factor-β (TGF-β) is related to epithelial-mesenchymal transition (EMT) of lens epithelial cells (LECs) that is proven to induce PCO formation in clinical and experimental studies. In this study, CRISPR sequences targeting exon of TGF-βRII were knocked out with lentiviral transfection in LECs. Rabbits' PCO model was established and recombinant adeno-associated virus (AAV) for transferring the gRNA of TGF βRII were intravitreally injected. SgRNA inhibited TGF-βRII expression and human LECs proliferation. In TGF-βRII knockout group, LECs motility and migration were suppressed, N-cadherin and vimentin expressions were significantly decreased, whereas E-cadherin was increased. The animal model showed that TGF-βRII knockout in vivo was effective in suppressing PCO. The current study suggested that the CRISPR/Cas9 endonuclease system could suppress TGF-βRII secretion, which participates in the EMT procedure of LECs in vitro and PCO in vivo. These findings might provide a new gene-editing approach and insight into a novel therapeutic strategy for PCO.
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Affiliation(s)
- Jin Da Wang
- Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 100730, China
| | - Jing Shang Zhang
- Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 100730, China
| | - Xiao Xia Li
- Department of Ophthalmology, Beijing Shijitan Hospital of Capital Medical University, Beijing 100038, China
| | - Kai Jie Wang
- Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 100730, China
| | - Meng Li
- Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 100730, China
| | - Ying Yan Mao
- Beijing Tongren Hospital, Beijing Institute of Ophthalmology, Capital Medical University, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - Xiu Hua Wan
- Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 100730, China.
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Yahalomi T, Elhaddad O, Avadhanam V, Tole D, Darcy K, Levinger E, Tuuminen R, Achiron A. Complications of pupil expansion devices: a large real-world study. FRONTIERS IN OPHTHALMOLOGY 2023; 3:1283378. [PMID: 38983009 PMCID: PMC11182085 DOI: 10.3389/fopht.2023.1283378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/27/2023] [Indexed: 07/11/2024]
Abstract
Purpose To assess the risk for uveitis, pseudophakic cystoid macular edema (PCME), and posterior capsular opacification (PCO) associated with the use of pupil expansion devices in cataract surgery. Design A retrospective comparative cohort study. Participants Patients who underwent routine cataract surgery with and without pupil expansion devices at the Department of Ophthalmology, Bristol Eye Hospital, UK, between January 2008 and December 2017. Methods This study included 39,460 eyes operated without a pupil expansion device and 699 eyes operated with the device. Odds ratios for uveitis and PCME when using a pupil expansion device were calculated using univariate and multivariate regression analysis, having age, gender, diabetes, pseudoexfoliation, and pupil expansion device as independent variables. Multivariate Cox regression controlling for age and gender was used to estimate hazard ratios (HR) for Nd : YAG laser capsulotomies. Results Postoperative uveitis and PCME were reported in 3.9% and 2.7% of the eyes operated with a pupil expansion device compared to 2.3% and 1.3% operated without the device (p=0.005 and p=0.002, respectively). In univariate regression analysis, eyes with pupil expansion devices showed a higher risk of postoperative uveitis or PMCE after cataract surgery (OR 1.88, 95%CI 1.39-2.55, p<0.001). In multivariate regression analysis, the risk for PMCE was greater among diabetic patients and in eyes with a pupil expansion device than in those without (OR 1.50, 95%CI 1.24-1.83, P<0.001; OR 1.90, 95%CI 1.16-3.11, P=0.01). In Cox regression analysis adjusted for the patient's age and gender, the use of a pupil expansion device was associated with higher Nd : YAG laser capsulotomy rates (HR 1.316, 95%CI 1.011-1.714, P=0.041). Conclusion In our large cohort study, the use of pupil expansion devices in cataract surgery was associated with an increased risk of major postoperative complications. Effective anti-inflammatory treatment and follow-up are warranted in eyes operated with a pupil expansion device.
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Affiliation(s)
- Tal Yahalomi
- Department of Ophthalmology, Samson Assuta Ashdod Hospital, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be’er Sheva, Israel
| | - Omar Elhaddad
- Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
- Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Venkata Avadhanam
- Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - Derek Tole
- Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - Kieran Darcy
- Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - Eliya Levinger
- Ophthalmology Department, Soraski Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Raimo Tuuminen
- Department of Ophthalmology, Kymenlaakso Central Hospital, Kotka, Finland
- Helsinki Retina Research Group, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Asaf Achiron
- Ophthalmology Department, Soraski Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
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10
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O'Neill LM, Wang Y, Duncan MK. Modeling Cataract Surgery in Mice. J Vis Exp 2023:10.3791/66050. [PMID: 38108456 PMCID: PMC10981495 DOI: 10.3791/66050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023] Open
Abstract
Cataract surgery (CS) is an effective treatment for cataracts, a major cause of visual disability worldwide. However, CS leads to ocular inflammation, and in the long term, it can result in posterior capsular opacification (PCO) and/or lens dislocation driven by the post-surgical overgrowth of lens epithelial cells (LECs) and their conversion to myofibroblasts and/or aberrant fiber cells. However, the molecular mechanisms by which CS results in inflammation and PCO are still obscure because most in vitro models do not recapitulate the wound healing response of LECs seen in vivo, while traditional animal models of cataract surgery, such as rabbits, do not allow the genetic manipulation of gene expression to test mechanisms. Recently, our laboratory and others have successfully used genetically modified mice to study the molecular mechanisms that drive the induction of proinflammatory signaling and LEC epithelial to mesenchymal transition, leading to new insight into PCO pathogenesis. Here, we report the established protocol for modeling cataract surgery in mice, which allows for robust transcriptional profiling of the response of LECs to lens fiber cell removal via RNAseq, the evaluation of protein expression by semi-quantitative immunofluorescence, and the use of modern mouse genetics tools to test the function of genes that are hypothesized to participate in the pathogenesis of acute sequelae like inflammation as well as the later conversion of LECs to myofibroblasts and/or aberrant lens fiber cells.
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Affiliation(s)
- Leah M O'Neill
- Department of Biological Sciences, University of Delaware
| | - Yan Wang
- Department of Biological Sciences, University of Delaware
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11
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Gong X, Deng L, Yao Z, Xie L, Zhao X, Xiong K, Li W, Liu Y, Yuan M, Congdon N, He M, Liang X, Huang W. Six-Year Change in Cataract Surgical Coverage and Postoperative Visual Outcomes in Rural Southern China: The Yangxi Eye Study. Asia Pac J Ophthalmol (Phila) 2023; 12:565-573. [PMID: 37973047 DOI: 10.1097/apo.0000000000000643] [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: 07/20/2023] [Accepted: 09/25/2023] [Indexed: 11/19/2023] Open
Abstract
PURPOSE The purpose of this study was to investigate a 6-year change in cataract surgical coverage (CSC), effective cataract surgical coverage (eCSC), and visual outcomes in an elderly population in rural southern China. DESIGN This is a prospective population-based study with a 6-year follow-up. METHODS The study included rural residents aged 50 years and above in southern China with comprehensive eye examinations at baseline and follow-up in 2014 and 2020, respectively. RESULTS Five thousand six hundred thirty-eight participants underwent baseline examinations (mean age 66.1±10.2 y, 50.8% women); and 3141 (64.9%) of 4841 eligible survivors attended the 6-year follow-up. Cataract surgical coverage was 41.7% and 40.6% at baseline and follow-up, respectively, while eCSC were 32.6% and 26.6%. In multivariate models, the 6-year likelihood of cataract surgery decreased with older age [odds ratio (OR)=0.97 per year, 95% confidence interval (CI): 0.94, 0.99, P =0.012] and worse baseline presenting uncorrected visual acuity (PVA) in the worse-seeing eye (OR=0.35 per unit logarithm of the minimum angle of resolution (logMAR), 95% CI: 0.25, 0.48, P <0.001), and increased with prior cataract surgical history at baseline (OR=3.88, 95% CI: 1.91, 7.09, P <0.001). The likelihood of receiving effective cataract surgery decreased with worse baseline PVA in the worse eye (OR=0.49 per unit logMAR, 95% CI: 0.24, 0.97, P =0.042) and better-seeing eye (OR=0.68 per unit logMAR, 95% CI: 0.48, 0.95, P =0.026). Posterior capsular opacification was the main reason for PVA <6/18, reporting it in logMAR (0.5) in operated eyes (38.4% at baseline; 28.1% at follow-up). CONCLUSIONS World Health Organization has established a global target of increasing eCSC by 30% before 2030, but no increase was found in rural southern China between 2014 and 2020, let alone reaching the World Health Organization target of 56.3%. Strategies to improve surgery incidence should focus on older persons and those with worse preoperative PVA.
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Affiliation(s)
- Xia Gong
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Liwen Deng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Zeyu Yao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Liqiong Xie
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Xinyu Zhao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Kun Xiong
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Wangting Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Yuanping Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Meng Yuan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Nathan Congdon
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
- Center for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen's University, Belfast, UK
- Orbis International, New York, NY
| | - Mingguang He
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Xiaoling Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
| | - Wenyong Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China
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12
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Sritrakoon N, Areevijittrakul L, Nimitchaiyapong N, Khamchomphu N, Duangurai T. Phacoemulsification in a chinchilla (Chinchilla lanigera). Open Vet J 2023; 13:1032-1036. [PMID: 37701661 PMCID: PMC10495097 DOI: 10.5455/ovj.2023.v13.i8.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 07/16/2023] [Indexed: 09/14/2023] Open
Abstract
Background A cataract is one of the underlying causes of blindness in animals. Phacoemulsification is the standard procedure in cataract surgery for humans and animals. This procedure has been used to restore vision in cataracts in a variety of animals. However, this technique is difficult in very small animals, such as rodents, due to their small eyes. Case Description A 4-year-old male domestic chinchilla was presented with cloudiness in the lenses for 1 month. The ophthalmic examination revealed cataracts (oculus uterque: both eyes). Positive dazzle reflex oculus sinister; left eye (OS) and negative reflex oculus dexter; right eye (OD) were noted. The electroretinography was low amplitude OS whereas a flat waveform presented OD. In this case, cataract surgery was performed using phacoemulsification without intraocular lens implantation OS. Postoperative, the chinchilla was alert and could jump on and jump off the ledge in a house. When the veterinarian approached closely to OS, the chinchilla displayed an erect body posture and open eyes, whereas the chinchilla was ignored when the veterinarian doing the same OD. The chinchilla was alert and had improved vision observe by this chinchilla can jump on and jump off the ledge in his house throughout the follow-up period 18 months later. Conclusion In this chinchilla, phacoemulsification was successfully performed and resulted in better overall vision. The chinchilla was alert and could jump on and jump off the ledge in a house after cataract surgery throughout the follow-up period of 18 months.
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Affiliation(s)
- Natthanet Sritrakoon
- Ophthalmology Unit, Kasetsart University Veterinary Teaching Hospital, Bangkok, Thailand
| | | | | | - Natruree Khamchomphu
- Exotic Unit, Kasetsart University Veterinary Teaching Hospital, Bangkok, Thailand
| | - Taksaon Duangurai
- Exotic Unit, Kasetsart University Veterinary Teaching Hospital, Bangkok, Thailand
- Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand
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13
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Zhou Y, Xiang J, Xu F, Jiang Z, Liu F. Objective quantification of posterior capsule opacification after cataract surgery with swept-source optical coherence tomography. BMC Ophthalmol 2023; 23:299. [PMID: 37407917 DOI: 10.1186/s12886-023-03064-3] [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: 03/23/2023] [Accepted: 06/28/2023] [Indexed: 07/07/2023] Open
Abstract
PURPOSE To evaluate the application of swept-source optical coherence tomography (SS-OCT) and pentacam scheimpflug tomography in posterior capsule opacification (PCO) severity assessment. METHODS The posterior capsule image region segmentation and adaptive threshold algorithm are used to process the SS-OCT scanned image to obtain the posterior capsule thickness (PCT). Scheimpflug tomography reconstructed and analysized by image J software can obtain the average gray value and evaluate the effectiveness with the two methods. RESULT One hundred sixty-two IOL eyes of 101 patients were divided into two groups, laser group (65 eyes) with the mean PCT was 8.0 ± 2.7 pixel unit and the mean gray value of the eyes was 66 ± 33 pixel unit. However, these figures in the control group (97 eyes) were 5.0 ± 0.9 and 11 ± 17. The sensitivity, specificity and area under curve(AUC) of SS-OCT PCT were 85%, 74% and 0.942,the sensitivity, specificity and AUC of Pentacam gray value were 91%, 76% and 0.947, respectively. After using the multivariable model of generalized estimation equation to corrected the dependence of subjects' eyes, it was found that SS-OCT PCT, Pentacam gray value, low vision quality of life questionnaire (LVQ questionnaire) for distance vision, and mobility and lighting dimension were significantly correlated with the PCO score (P = 0.012, P = 0.001, P = 0.005, respectively). CONCLUSION The region segmentation and adaptive threshold algorithm of posterior capsule image will accurately quantify the posterior capsule. Computer aided quantifications of posterior capsule are of great significance in the early surgical decision-making of PCO. The average occurrence time of most PCO was around 34 months, and the severity of PCO worsened with increasing postoperative time.
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Affiliation(s)
- Yu Zhou
- Department of Ophthalmology, Tenth People's Hospital Affiliated of Tongji University, Shanghai, China
- Department of Ophthalmology, Rui Jin Hospital, LuWan Branch, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Xiang
- Department of Ophthalmology, Tenth People's Hospital Affiliated of Tongji University, Shanghai, China
| | - Fang Xu
- Department of Ophthalmology, Tenth People's Hospital Affiliated of Tongji University, Shanghai, China
| | - Ziyuan Jiang
- Department of Ophthalmology, Tenth People's Hospital Affiliated of Tongji University, Shanghai, China
| | - Fang Liu
- Department of Ophthalmology, Tenth People's Hospital Affiliated of Tongji University, Shanghai, China.
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14
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Li C, Chen X, Zhang S, Liang C, Ma X, Zhang R, Yan H. Glutaredoxin 1 protects lens epithelial cells from epithelial-mesenchymal transition by preventing casein kinase 1α S-glutathionylation during posterior capsular opacification. Redox Biol 2023; 62:102676. [PMID: 36989576 PMCID: PMC10074848 DOI: 10.1016/j.redox.2023.102676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/06/2023] [Accepted: 03/14/2023] [Indexed: 03/28/2023] Open
Abstract
Oxidative stress drives protein S-glutathionylation, which regulates the structure and function of target proteins and is implicated in the pathogenesis of many diseases. Glutaredoxin 1 (Grx1), a cytoplasmic deglutathionylating enzyme, maintains a reducing environment within the cell under various conditions by reversing S-glutathionylation. Grx1 performs a wide range of antioxidant activities in the lens and prevents protein-thiol mixed disulfide accumulation, reducing protein-protein aggregation, insolubilization, and apoptosis of lens epithelial cells. Oxidative stress is related to epithelial-mesenchymal transition (EMT) during posterior capsular opacification (PCO). However, whether Grx1-regulated protein S-glutathionylation plays an essential role in PCO remains unclear. In this study, we revealed that Grx1 expression was decreased in mice following cataract surgery. Furthermore, the absence of Grx1 elevated oxidative stress and protein S-glutathionylation and aggravated EMT in both in vitro and in vivo models. Concurrently, these results could be reversed by Grx1 overexpression. Notably, liquid chromatography-tandem mass spectrometry results showed that casein kinase 1α (CK1α) was susceptible to S-glutathionylation under oxidative stress, and CK1α S-glutathionylation (CK1α-SSG) was mediated at Cys249. The absence of Grx1 upregulated CK1α-SSG, subsequently decreasing the CK1α-induced phosphorylation of β-catenin at Ser45. The consequential downregulation of degradative β-catenin and upregulation of its nuclear translocation activated the Wnt/β-catenin signaling pathway and aggravated EMT. In conclusion, the downregulated expression of Grx1 in mice following cataract surgery aggravated EMT by upregulating the extent of CK1α-SSG. To the best of our knowledge, our study is the first to report how S-glutathionylation regulates CK1α activity under oxidative stress.
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15
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Hong Y, Fang Q, Bai T, Zhao P, Han Y, Lin Q. Cascade reaction triggering and photothermal AuNPs@MIL MOFs doped intraocular lens for enhanced posterior capsular opacification prevention. J Nanobiotechnology 2023; 21:134. [PMID: 37095517 PMCID: PMC10127092 DOI: 10.1186/s12951-023-01897-0] [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: 02/16/2023] [Accepted: 04/16/2023] [Indexed: 04/26/2023] Open
Abstract
Posterior capsular opacification (PCO) is the most common complication after cataract surgery. Present strategies can't meet the clinical needs of long-term prevention. This research reports a novel intraocular lens (IOL) bulk material with high biocompatibility and synergistic therapy. Gold nanoparticles (AuNPs) doped MIL-101-NH2 metal-organic frameworks (MOFs) (AuNPs@MIL) was firstly fabricated via in situ reductions. Then the functionalized MOFs were uniformly mixed with glycidyl methacrylate (GMA) and 2-(2-ethoxyethoxy) ethyl acrylate (EA) to form the nanoparticle doped polymer (AuNPs@MIL-PGE), and which was used to fabricate IOL bulk materials. The materials' optical and mechanical properties with different mass contents of nanoparticles are investigated. Such bulk functionalized IOL material could efficiently remove residual human lens epithelial cells (HLECs) in the capsular bag in the short term, and can prevent PCO on demand in the long run by near-infrared illumination (NIR) action. In vivo and in vitro experiments demonstrate the biosafety of the material. The AuNPs@MIL-PGE exhibits excellent photothermal effects, which could inhibit cell proliferation under NIR and doesn't cause pathological effects on the surrounding tissues. Such functionalized IOL can not only avoid the side effects of the antiproliferative drugs but also realize the enhanced PCO prevention in clinical practice.
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Affiliation(s)
- Yueze Hong
- National Engineering Research Center of Ophthalmology and Optometry, School of Biomedical Engineering, School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Qiuna Fang
- National Engineering Research Center of Ophthalmology and Optometry, School of Biomedical Engineering, School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Ting Bai
- National Engineering Research Center of Ophthalmology and Optometry, School of Biomedical Engineering, School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Peiyi Zhao
- National Engineering Research Center of Ophthalmology and Optometry, School of Biomedical Engineering, School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Yuemei Han
- National Engineering Research Center of Ophthalmology and Optometry, School of Biomedical Engineering, School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Quankui Lin
- National Engineering Research Center of Ophthalmology and Optometry, School of Biomedical Engineering, School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China.
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16
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Moshirfar M, Basharat NF, Seitz TS, Peterson CM, Stapley SR, Ziari M, Bundogji N, Ronquillo YC, Hoopes PC. Refractive Changes After Nd:YAG Capsulotomy in Pseudophakic Eyes. Clin Ophthalmol 2023; 17:135-143. [PMID: 36644604 PMCID: PMC9833321 DOI: 10.2147/opth.s395605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 12/28/2022] [Indexed: 01/09/2023] Open
Abstract
Purpose To analyze refractive changes after neodymium: yttrium-aluminum-garnet (Nd:YAG) posterior capsulotomy in pseudophakic eyes. Patients and Methods Patients who underwent Nd:YAG capsulotomy after cataract surgery from January 2013 to April 2022 were included in this retrospective study. Sphere, cylinder, spherical equivalent (SE), axis, and corrected distance visual acuity (CDVA) were compared pre- and postoperatively in 683 eyes of 548 patients at one month (n = 605 eyes) and one year (n = 211 eyes). Patients with both one-month and one-year follow-ups (n = 133) were also compared. Eyes were stratified into single-piece (n = 330), three-piece (n = 30), and light adjustable lenses (LALs) (n = 16). Pre- and postoperative measurements were analyzed within each group. Results Cylinder was significantly decreased at one-month (difference: 0.042±0.448 D, p = 0.006) and one-year (difference: 0.101±0.455 D, p = 0.003) compared to preoperative measurements. No significant change in sphere or axis was observed at follow-up visits (p > 0.05). CDVA significantly improved at both time points (p < 0.05). No significant change in any parameters between the one-month and one-year groups was observed (p > 0.05). There was significant improvement in CDVA in the single and three-piece lens groups (p < 0.0001 and p = 0.026, respectively), with no change in the LAL group (p > 0.05). Conclusion There were no changes in sphere, axis, or spherical equivalent after Nd:YAG capsulotomy. However, cylindrical error and CDVA were significantly better after the procedure. Lens type did not impact refractive parameters postoperatively.
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Affiliation(s)
- Majid Moshirfar
- Hoopes Vision Research Center, Hoopes Vision, Draper, UT, 84020, USA,John A. Moran Eye Center, University of Utah School of Medicine, Salt Lake City, UT, USA,Utah Lions Eye Bank, Murray, UT, USA,Correspondence: Majid Moshirfar, Hoopes Vision Research Center, 11820 S, State Street Suite #200, Draper, UT, 84020, Tel +1-801-568-0200, Fax +1-801-563-0200, Email
| | - Noor F Basharat
- University of Arizona College of Medicine – Phoenix, Phoenix, AZ, USA
| | - Tanner S Seitz
- Midwestern University Arizona College of Osteopathic Medicine, Glendale, AZ, USA
| | | | - Seth R Stapley
- Midwestern University Arizona College of Osteopathic Medicine, Glendale, AZ, USA
| | - Melody Ziari
- University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX, USA
| | - Nour Bundogji
- John A. Moran Eye Center, University of Utah School of Medicine, Salt Lake City, UT, USA
| | | | - Phillip C Hoopes
- Hoopes Vision Research Center, Hoopes Vision, Draper, UT, 84020, USA
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17
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Ye Z, Huang Y, Li J, Ma T, Gao L, Hu H, He Q, Jin H, Li Z. Two-dimensional ultrathin Ti3C2 MXene nanosheets coated intraocular lens for synergistic photothermal and NIR-controllable rapamycin releasing therapy against posterior capsule opacification. Front Bioeng Biotechnol 2022; 10:989099. [PMID: 36110318 PMCID: PMC9468448 DOI: 10.3389/fbioe.2022.989099] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Posterior capsule opacification (PCO) is one of the most frequent late-onset complications after cataract surgery. Several kinds of drug-eluting intraocular lenses (IOL) were designed for sustainable drug release to suppress ocular inflammation, the proliferation of lens epithelial cells (LECs) and the development of PCO after cataract surgery. Despite previous advances in this field, the drug-loaded IOLs were limited in ocular toxicity, insufficient drug-loading capacity, and short release time. To prevent PCO and to address these drawbacks, a novel drug-loaded IOL (Rapa@Ti3C2-IOL), prepared from two-dimensional ultrathin Ti3C2 MXene nanosheets and rapamycin (Rapa), was fabricated with a two-step spin coating method in this study. Rapa@Ti3C2 was prepared via electrostatic self-assembly of Ti3C2 and Rapa, with a loading capacity of Rapa at 92%. Ti3C2 was used as a drug delivery reservoir of Rapa. Rapa@Ti3C2-IOL was designed to have the synergistic photothermal and near infrared (NIR)-controllable drug release property. As a result, Rapa@Ti3C2-IOL exhibited the advantages of simple preparation, high light transmittance, excellent photothermal conversion capacity, and NIR-controllable drug release behavior. The Rapa@Ti3C2 coating effectively eliminated the LECs around Rapa@Ti3C2-IOL under a mild 808-nm NIR laser irradiation (1.0 W/cm−2). Moreover, NIR-controllable Rapa release inhibited the migration of LECs and suppressed the inflammatory response after photothermal therapy in vitro. Then, Rapa@Ti3C2-IOL was implanted into chinchilla rabbit eyes, and the effectiveness and biocompatibility to prevent PCO were evaluated for 4 weeks. The Rapa@Ti3C2-IOL implant exhibited excellent PCO prevention ability with the assistance of NIR irradiation and no obvious pathological damage was observed in surrounding healthy tissues. In summary, the present study offers a promising strategy for preventing PCO via ultrathin Ti3C2 MXene nanosheet-based IOLs with synergistic photothermal and NIR-controllable Rapa release properties.
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Affiliation(s)
- Zi Ye
- Senior Department of Ophthalmology, The Third Medical Center, The Chinese PLA General Hospital, Beijing, China
| | - Yang Huang
- Department of Ophthalmology, Shanghai Electric Power Hospital, Shanghai, China
- Department of Ophthalmology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jinglan Li
- Senior Department of Ophthalmology, The Third Medical Center, The Chinese PLA General Hospital, Beijing, China
| | - Tianju Ma
- Senior Department of Ophthalmology, The Third Medical Center, The Chinese PLA General Hospital, Beijing, China
| | - Lixiong Gao
- Senior Department of Ophthalmology, The Third Medical Center, The Chinese PLA General Hospital, Beijing, China
| | - Huihui Hu
- Suzhou Beike Nano Technology Co., Ltd., Suzhou, China
- *Correspondence: Huihui Hu, ; Qing He, 2608169765qq.com; Haiying Jin, ; Zhaohui Li,
| | - Qing He
- Suzhou Beike Nano Technology Co., Ltd., Suzhou, China
- *Correspondence: Huihui Hu, ; Qing He, 2608169765qq.com; Haiying Jin, ; Zhaohui Li,
| | - Haiying Jin
- Department of Ophthalmology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
- *Correspondence: Huihui Hu, ; Qing He, 2608169765qq.com; Haiying Jin, ; Zhaohui Li,
| | - Zhaohui Li
- Senior Department of Ophthalmology, The Third Medical Center, The Chinese PLA General Hospital, Beijing, China
- *Correspondence: Huihui Hu, ; Qing He, 2608169765qq.com; Haiying Jin, ; Zhaohui Li,
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Islam S, Do M, Frank BS, Hom GL, Wheeler S, Fujioka H, Wang B, Minocha G, Sell DR, Fan X, Lampi KJ, Monnier VM. α-Crystallin chaperone mimetic drugs inhibit lens γ-crystallin aggregation: potential role for cataract prevention. J Biol Chem 2022; 298:102417. [PMID: 36037967 PMCID: PMC9525908 DOI: 10.1016/j.jbc.2022.102417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 11/29/2022] Open
Abstract
Γ-Crystallins play a major role in age-related lens transparency. Their destabilization by mutations and physical chemical insults are associated with cataract formation. Therefore, drugs that increase their stability should have anticataract properties. To this end, we screened 2560 Federal Drug Agency–approved drugs and natural compounds for their ability to suppress or worsen H2O2 and/or heat-mediated aggregation of bovine γ-crystallins. The top two drugs, closantel (C), an antihelminthic drug, and gambogic acid (G), a xanthonoid, attenuated thermal-induced protein unfolding and aggregation as shown by turbidimetry fluorescence spectroscopy dynamic light scattering and electron microscopy of human or mouse recombinant crystallins. Furthermore, binding studies using fluorescence inhibition and hydrophobic pocket–binding molecule bis-8-anilino-1-naphthalene sulfonic acid revealed static binding of C and G to hydrophobic sites with medium-to-low affinity. Molecular docking to HγD and other γ-crystallins revealed two binding sites, one in the “NC pocket” (residues 50–150) of HγD and one spanning the “NC tail” (residues 56–61 to 168–174 in the C-terminal domain). Multiple binding sites overlap with those of the protective mini αA-crystallin chaperone MAC peptide. Mechanistic studies using bis-8-anilino-1-naphthalene sulfonic acid as a proxy drug showed that it bound to MAC sites, improved Tm of both H2O2 oxidized and native human gamma D, and suppressed turbidity of oxidized HγD, most likely by trapping exposed hydrophobic sites. The extent to which these drugs act as α-crystallin mimetics and reduce cataract progression remains to be demonstrated. This study provides initial insights into binding properties of C and G to γ-crystallins.
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Affiliation(s)
- Sidra Islam
- Dept of Pathology and Biochemistry, Case Western Reserve University, Cleveland, OH 44106
| | - Michael Do
- Dept of Pathology and Biochemistry, Case Western Reserve University, Cleveland, OH 44106
| | - Brett S Frank
- Dept of Pathology and Biochemistry, Case Western Reserve University, Cleveland, OH 44106
| | - Grant L Hom
- Dept of Pathology and Biochemistry, Case Western Reserve University, Cleveland, OH 44106
| | - Samuel Wheeler
- Dept of Integrative Biosciences, Oregon Health & Sciences University, Portland, OR 97239
| | - Hisashi Fujioka
- Cryo-EM Core Facility, School of Medicine, Case Western Reserve University, Case Western Reserve University, Cleveland, OH 44016
| | - Benlian Wang
- Center for Proteomics and Bioinformatics, Dept of Nutrition, Case Western Reserve University, Cleveland, OH 44106
| | - Geeta Minocha
- Dept of Pathology and Biochemistry, Case Western Reserve University, Cleveland, OH 44106
| | - David R Sell
- Dept of Pathology and Biochemistry, Case Western Reserve University, Cleveland, OH 44106
| | - Xingjun Fan
- Dept of Cell Biology and Anatomy, Augusta University, Georgia, GA 30912
| | - Kirsten J Lampi
- Dept of Integrative Biosciences, Oregon Health & Sciences University, Portland, OR 97239
| | - Vincent M Monnier
- Dept of Pathology and Biochemistry, Case Western Reserve University, Cleveland, OH 44106; Dept of Biochemistry, Case Western Reserve University, Cleveland OH 44106.
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Xiong L, Sun Y, Huang J, Ma P, Wang X, Wang J, Chen B, Chen J, Huang M, Huang S, Liu Y. Long Non-Coding RNA H19 Prevents Lens Fibrosis through Maintaining Lens Epithelial Cell Phenotypes. Cells 2022; 11:cells11162559. [PMID: 36010635 PMCID: PMC9406623 DOI: 10.3390/cells11162559] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/11/2022] [Accepted: 08/15/2022] [Indexed: 12/02/2022] Open
Abstract
The integrity of lens epithelial cells (LECs) lays the foundation for lens function and transparency. By contrast, epithelial-mesenchymal transition (EMT) of LECs leads to lens fibrosis, such as anterior subcapsular cataracts (ASC) and fibrotic forms of posterior capsule opacification (PCO). However, the underlying mechanisms remain unclear. Here, we aimed to explore the role of long non-coding RNA (lncRNA) H19 in regulating TGF-β2-induced EMT during lens fibrosis, revealing a novel lncRNA-based regulatory mechanism. In this work, we identified that lncRNA H19 was highly expressed in LECs, but downregulated by exposure to TGF-β2. In both human lens epithelial explants and SRA01/04 cells, knockdown of H19 aggravated TGF-β2-induced EMT, while overexpressing H19 partially reversed EMT and restored lens epithelial phenotypes. Semi-in vivo whole lens culture and H19 knockout mice demonstrated the indispensable role of H19 in sustaining lens clarity through maintaining LEC features. Bioinformatic analyses further implied a potential H19-centered regulatory mechanism via Smad-dependent pathways, confirmed by in vitro experiments. In conclusion, we uncovered a novel role of H19 in inhibiting TGF-β2-induced EMT of the lens by suppressing Smad-dependent signaling, providing potential therapeutic targets for treating lens fibrosis.
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Cui Y, Yang H, Shi S, Ping X, Zheng S, Tang X, Yu X, Shentu X. TP53INP2 Contributes to TGF-β2-Induced Autophagy during the Epithelial–Mesenchymal Transition in Posterior Capsular Opacification Development. Cells 2022; 11:cells11152385. [PMID: 35954230 PMCID: PMC9368444 DOI: 10.3390/cells11152385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/15/2022] [Accepted: 07/22/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Posterior capsule opacification (PCO) is the most common complication after cataract surgery, in which increased levels of transforming growth factor-beta 2 (TGF-β2) accelerate PCO formation; however, the pathological mechanisms are not fully understood. This study aims to explore the regulation mechanism of TGF-β2 in PCO formation via its autophagic functions. Methods: The autophagic effect of TGF-β2 was detected by transmission electron microscopy (TEM), Western blotting, and immunofluorescence analysis. The association between autophagy and the epithelial–mesenchymal transition (EMT) was evaluated by qPCR and Western blotting. The transcriptome analysis was used to uncover the molecular mechanism of TGF-β2-induced PCO formation. Results: TGF-β2 specifically promotes autophagy flux in human lens epithelial cells. The activation of autophagy by rapamycin can promote EMT marker synthesis and improve cell migration. However, the inhibition of autophagy by 3-MA attenuates EMT. To uncover the molecular mechanisms, we performed RNA sequencing and found that TGF-β2 elevated tumor protein p53-inducible nuclear protein2 (TP53INP2) expression, which was accompanied by a nuclear-to-cytoplasm translocation. Moreover, the knockdown of TP53INP2 blocked the TGF-β2-induced autophagy and EMT processes, revealing that TP53INP2 plays an important role in TGF-β2-induced autophagy during EMT. Conclusions: Taken together, the results of this study suggested that TP53INP2 was a novel regulator of PCO development by TGF-β2, and notably, TP53INP2, may be a potential target for the pharmacological treatment of PCO.
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Affiliation(s)
- Yilei Cui
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China; (Y.C.); (H.Y.); (S.S.); (X.P.); (X.T.); (X.Y.)
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou 310009, China
| | - Hao Yang
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China; (Y.C.); (H.Y.); (S.S.); (X.P.); (X.T.); (X.Y.)
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou 310009, China
| | - Silu Shi
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China; (Y.C.); (H.Y.); (S.S.); (X.P.); (X.T.); (X.Y.)
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou 310009, China
| | - Xiyuan Ping
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China; (Y.C.); (H.Y.); (S.S.); (X.P.); (X.T.); (X.Y.)
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou 310009, China
| | - Sifan Zheng
- GKT School of Medical Education, King’s College London, London WC2R 2LS, UK;
| | - Xiajing Tang
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China; (Y.C.); (H.Y.); (S.S.); (X.P.); (X.T.); (X.Y.)
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou 310009, China
| | - Xiaoning Yu
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China; (Y.C.); (H.Y.); (S.S.); (X.P.); (X.T.); (X.Y.)
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou 310009, China
| | - Xingchao Shentu
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China; (Y.C.); (H.Y.); (S.S.); (X.P.); (X.T.); (X.Y.)
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou 310009, China
- Correspondence: ; Tel.: +86-0571-13515818860
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Taiyab A, West-Mays J. Lens Fibrosis: Understanding the Dynamics of Cell Adhesion Signaling in Lens Epithelial-Mesenchymal Transition. Front Cell Dev Biol 2022; 10:886053. [PMID: 35656546 PMCID: PMC9152183 DOI: 10.3389/fcell.2022.886053] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/11/2022] [Indexed: 12/13/2022] Open
Abstract
Injury to the ocular lens perturbs cell-cell and cell-capsule/basement membrane interactions leading to a myriad of interconnected signaling events. These events include cell-adhesion and growth factor-mediated signaling pathways that can ultimately result in the induction and progression of epithelial-mesenchymal transition (EMT) of lens epithelial cells and fibrosis. Since the lens is avascular, consisting of a single layer of epithelial cells on its anterior surface and encased in a matrix rich capsule, it is one of the most simple and desired systems to investigate injury-induced signaling pathways that contribute to EMT and fibrosis. In this review, we will discuss the role of key cell-adhesion and mechanotransduction related signaling pathways that regulate EMT and fibrosis in the lens.
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Leng L, Bai H, Li H, Liu D, Han Y, Wu X. Comparison of Anterior Capsule Polishing on the Rate of Neodymium: YAG Laser Capsulotomy After Two Multifocal Intraocular Lens Implantation. Front Med (Lausanne) 2022; 9:815966. [PMID: 35372397 PMCID: PMC8965588 DOI: 10.3389/fmed.2022.815966] [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: 11/16/2021] [Accepted: 02/10/2022] [Indexed: 11/13/2022] Open
Abstract
PurposeTo compare the impact of anterior capsule polishing (ACP) during cataract surgery on the rate of neodymium: YAG (Nd: YAG) laser capsulotomy in pseudophakic eyes with two multifocal intraocular lenses (MIOLs).MethodsData were collected on patients who underwent cataract surgery and implanted segmental refractive MIOLs (SBL-3, Lenstec) or diffracted MIOLs (AT LISA tri 839MP, Carl Zeiss Meditec). The participants were divided into ACP and non-ACP groups based on whether the anterior capsule was polished. The primary outcome measure was whether Nd: YAG capsulotomy was performed during the 3 years follow-up. We used Kaplan–Meier survival curves to determine the time from IOL implantation to Nd: YAG laser capsulotomy.ResultsACP and non-ACP groups comprised 70 and 60 eyes, respectively. One year postoperatively, 7.14% of ACP group eyes and 8.33% of non-ACP group required Nd: YAG laser capsulotomy (P > 0.99). After 2 years, it was 24.29 and 18.33%, respectively (P = 0.52), while after 3 years, it reached 30.0 and 28.33% (P = 0.85). No distinct difference existed in the probability of using Nd: YAG laser in both groups evaluated using Kaplan-Meier survival curves (P = 0.81). Patients with diffractive MIOLs (AT LISA tri 839MP) implantation were more likely to require Nd: YAG laser capsulotomy (P < 0.01).ConclusionPolishing the anterior capsule had no remarkable effect on reducing the rate of Nd: YAG laser capsulotomy following phacoemulsification in MIOLs. Patients with diffractive MIOLs implantation had a high probability of requiring Nd: YAG laser capsulotomy.
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Affiliation(s)
- Lin Leng
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
| | - Huiran Bai
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
| | - Honglei Li
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
| | - Dongle Liu
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
| | - Yanfeng Han
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
| | - Xiaoming Wu
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- *Correspondence: Xiaoming Wu,
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