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1.
BMC Ophthalmol ; 24(1): 227, 2024 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-38811878

RESUMO

OBJECTIVE: To present six cases exhibiting transient anterior subcapsular vacuolar lens opacities following early postoperative Tanito microhook trabeculotomy (TMH) performed by the same surgeon. METHODS: Six patients who underwent lens-sparing TMH at Meizankai Shimizu Eye Clinic from November 2021 to May 2023, and developed anterior subcapsular vacuolar lens opacities postoperatively were reviewed. Detailed records of surgeries, follow-up findings were collected and reported. RESULTS: In all six cases, anterior vacuolar subcapsular lens opacities were observed on the day after surgery, gradually decreasing without affecting visual acuity or contrast sensitivity. In all cases, without any specific interventions, the opacities disappeared by 21 months postoperatively. CONCLUSION: Anterior subcapsular cataracts, characterized by a vacuolar appearance and transient existence, should be recognized as an early complication of ab interno glaucoma surgery, possibly linked to use of distributed ophthalmic viscosurgical devices and excessive anterior chamber irrigation leading to traumatic cataracts on the lens surface.


Assuntos
Catarata , Trabeculectomia , Acuidade Visual , Humanos , Trabeculectomia/efeitos adversos , Feminino , Masculino , Pessoa de Meia-Idade , Idoso , Complicações Pós-Operatórias , Cápsula do Cristalino/cirurgia , Cápsula do Cristalino/patologia , Vacúolos/patologia , Estudos Retrospectivos , Pressão Intraocular/fisiologia , Glaucoma/cirurgia , Adulto
4.
J Cataract Refract Surg ; 50(6): 611-617, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38350154

RESUMO

PURPOSE: To explore lens capsule pathological characteristics in intraocular lens (IOL) dislocation after cataract surgery in patients with atopic dermatitis (AD). SETTING: University hospital department of ophthalmology. DESIGN: Case series with clinicopathological correlations. METHODS: Lens capsules and surrounding tissues excised during surgery from eyes with AD (AD group) and eyes without AD (non-AD group) with IOL dislocation were histologically evaluated. Hematoxylin and eosin staining was used to assess abnormal changes in lens epithelial cells (LECs). Masson trichrome staining distinguished the fibrous metaplasia around the lens capsule into high-density and low-density fibrosis. Capsular splitting (thinning) was identified in both stained preparations. RESULTS: The IOL dislocation morphology in the AD group (10 eyes of 10 patients) included 7 cases of capsular bag dislocation (CBD) and 3 cases of dead bag syndrome (DBS), with an average duration to IOL dislocation of 11.5 ± 5.6 years. All patients in the non-AD group (12 eyes of 12 patients) had CBD, averaging 10.2 ± 5.7 years to dislocation. Abnormal LECs, low-density fibrosis, and capsular splitting were observed in 9 (90), 9 (90), and 6 (60) of the patients in the AD group compared with 6 (50), 3 (25), and 2 (18), respectively, in the non-AD group (total n [%]). CONCLUSIONS: Compared with the non-AD group, the AD group exhibited higher frequencies of morphological changes in LECs, low-density fibrosis around the lens capsule, and capsular splitting characteristics of DBS. These results suggest LEC degeneration and increased lens capsule fragility occurred in patients with AD.


Assuntos
Dermatite Atópica , Cápsula do Cristalino , Humanos , Cápsula do Cristalino/patologia , Masculino , Feminino , Pessoa de Meia-Idade , Dermatite Atópica/complicações , Adulto , Migração do Implante de Lente Intraocular/etiologia , Idoso , Implante de Lente Intraocular , Facoemulsificação , Fibrose , Células Epiteliais/patologia , Lentes Intraoculares , Estudos Retrospectivos , Extração de Catarata
5.
BMC Ophthalmol ; 24(1): 53, 2024 Feb 02.
Artigo em Inglês | MEDLINE | ID: mdl-38308223

RESUMO

BACKGROUND: Late-onset capsule block syndrome (CBS) is a rare complication of cataract phacoemulsification and the implantation of a posterior chamber intraocular lens (PCIOL), which manifests six months to years after surgery. The hallmark of CBS is the formation of an opaque liquid substance between the implanted intraocular lens (IOL) and the posterior capsule. However, its pathogenesis remains unclear. CASE PRESENTATION: A 64-year-old female patient with chronic angle-closure glaucoma (axis length < 21 mm) underwent trabeculectomy surgery combined with phacoemulsification and PCIOL. After a 4-year follow-up, a decline in visual acuity occurred in her right eye due to the location of opaque fluid in the visual axis and distension of the capsular bag. The initial course of action was to release the trapped fluid. Neodymium: yttrium-aluminum-garnet (Nd: YAG) laser capsulotomy could not be employed due to her non-dilating pupil and high extension of the posterior capsule. Subsequently, anterior capsule peeling and anterior segment vitrectomy surgery were performed. The depth of the anterior chamber (ACD), the distance between the face of the retro-IOL and the posterior capsule, the best-corrected visual acuity (BCVA), and the visual quality (VQ) were measured both before and after surgery. Inflammatory cytokine levels in the opaque substances (OS) trapped between the PCIOL and the posterior capsule were assessed using a flow cytometer and compared to normal statistical data in aqueous humor. After surgery, the patient experienced a significant improvement in BCVA and VQ. The distance between the face of the retro-IOL and the posterior capsule was on the verge of disappearing. However, ACD did not differ between pre- and post-operatively. Interleukin-8 (IL-8) and basic fibroblast growth factor (BFGF) concentrations were higher in the OS than in aqueous humor, especially in the former. However, the concentration of vascular cell adhesion molecule (VCAM) in the OS was lower than in aqueous humor. CONCLUSIONS: Anterior segment vitrectomy surgery proved to be a successful treatment for late-onset CBS, presenting a challenging case. In the human lens, inflammatory cytokines originating from the opaque substances may contribute to abnormal metabolism in the sealed area, a consequence of late-onset CBS.


Assuntos
Extração de Catarata , Traumatismos Oculares , Cápsula do Cristalino , Doenças do Cristalino , Facoemulsificação , Humanos , Feminino , Pessoa de Meia-Idade , Citocinas , Implante de Lente Intraocular/efeitos adversos , Doenças do Cristalino/diagnóstico , Doenças do Cristalino/etiologia , Doenças do Cristalino/cirurgia , Cápsula do Cristalino/cirurgia , Cápsula do Cristalino/patologia , Extração de Catarata/efeitos adversos , Facoemulsificação/efeitos adversos , Traumatismos Oculares/complicações , Complicações Pós-Operatórias/cirurgia
6.
J Cataract Refract Surg ; 50(6): 599-604, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38270489

RESUMO

PURPOSE: To investigate the effect of anterior capsule polishing on postoperative capsule opacification and capsular bend in patients with age-related cataract displaying normal axial length. SETTING: Eye Hospital of Wenzhou Medical University at Hangzhou. DESIGN: Prospective self-controlled trial. METHODS: Patients with age-related cataracts aged 56 to 84 years displaying normal axial length were enrolled. Before surgery, a coin-toss method was used to randomly select 1 eye for intraoperative 360 degrees anterior capsule polishing (polishing group); the contralateral eye received no treatment (control group). Capsular bend index (CBI), anterior capsule opacification (ACO), posterior capsule opacification (PCO), and anterior capsule opening area (ACOA) were recorded at 1 week, 1 month, 3 months, 6 months, and 12 months postoperatively using swept-source optical coherence tomography and slitlamp examination. RESULTS: 21 patients (42 eyes) were enrolled. Within-group comparisons showed that both groups had significant differences in CBI between 1 week and 1 month postoperatively, and between 6 months and 12 months postoperatively ( P < .05). Between-group comparisons revealed a significant difference in CBI at 1 week postoperatively ( P < .05); at 12 months postoperatively, there was a significant difference in ACOA ( P < .05). There were no significant between-group differences regarding ACO or PCO at any timepoint ( P > .05). CONCLUSIONS: For patients with age-related cataracts and normal axial length, 360 degrees anterior capsule polishing can delay early capsular bag deformation without increasing the risks of ACO and PCO. This approach can also limit contraction of the anterior capsule opening.


Assuntos
Cápsula Anterior do Cristalino , Opacificação da Cápsula , Facoemulsificação , Tomografia de Coerência Óptica , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cápsula Anterior do Cristalino/cirurgia , Opacificação da Cápsula/prevenção & controle , Capsulorrexe/métodos , Catarata , Cápsula do Cristalino/cirurgia , Cápsula do Cristalino/patologia , Implante de Lente Intraocular , Facoemulsificação/métodos , Complicações Pós-Operatórias/prevenção & controle , Estudos Prospectivos , Tomografia de Coerência Óptica/métodos , Acuidade Visual/fisiologia
7.
Cells ; 12(21)2023 10 29.
Artigo em Inglês | MEDLINE | ID: mdl-37947618

RESUMO

Cataract is the leading cause of blindness worldwide. It can be treated by surgery, whereby the damaged crystalline lens is replaced by a synthetic lens. Although cataract surgery is highly effective, a relatively common complication named posterior capsular opacification (PCO) leads to secondary loss of vision. PCO is caused by abnormal proliferation and migration of residual lens epithelial cells (LECs) that were not removed during the surgery, which results in interruption to the passage of light. Despite technical improvements to the surgery, this complication has not been eradicated. Efforts are being made to identify drugs that can be applied post-surgery, to inhibit PCO development. Towards the goal of identifying such drugs, we used zebrafish embryos homozygous for a mutation in plod3 that develop a lens phenotype with characteristics of PCO. Using both biased and unbiased approaches, we identified small molecules that can block the lens phenotype of the mutants. Our findings confirm the relevance of zebrafish plod3 mutants' lens phenotype as a model for lens epithelium-derived cataract and add to our understanding of the molecular mechanisms that contribute to the development of this pathology. This understanding should help in the development of strategies for PCO prevention.


Assuntos
Opacificação da Cápsula , Cápsula do Cristalino , Cristalino , Animais , Peixe-Zebra , Cápsula do Cristalino/patologia , Opacificação da Cápsula/prevenção & controle , Epitélio
8.
Int Ophthalmol ; 43(12): 4945-4958, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37897540

RESUMO

PURPOSE: To investigate the link between the capsular bend and the morphological types and characteristics of posterior capsular opacification (PCO) using anterior segment optical coherence tomography. METHODS: Thirty eyes with PCO were examined, and three types of PCO were identified: pearl, fibrosis, and mixed. We assessed anterior capsular overlap, intraocular lens-capsule adhesion, and capsular bending. In addition to measuring the intraocular lens-posterior capsule distance and capsule bending angle (CBA), the PCO parameters (area, density, and score at 6-, 5-, and 3-mm intraocular lens optic regions) were recorded. The associations between capsular bend and PCO type and characteristics were investigated. A control group of 12 eyes without PCO was used to compare the study variables. RESULTS: With p values greater than 0.001, there was a statistically significant difference in the mean PCO area and score at the 6-, 5-, and 3-mm optic zones in different PCO types, with the pearl type having the highest value, followed by the mixed type, and finally the fibrosis type. The PCO group had a significantly higher mean CBA than the control group (P = 0.001). CBA was positively related to intraocular lens-posterior capsule distance, PCO area, and PCO score at the 6-, 5-, and 3-mm zones (P = 0.001). The receiver operating characteristic curve's cut-off point for CBA was 96.85° when comparing PCO cases to controls. Partial overlap and incomplete adhesion were statistically more common in the PCO eyes than in the control (P = 0.001, 0.003, respectively). CONCLUSION: PCO types and CBA have a strong relationship with PCO score and intraocular lens-posterior capsule space. In PCO's eyes, CBA has a cut-off value of 96.85°.


Assuntos
Opacificação da Cápsula , Catarata , Cápsula do Cristalino , Lentes Intraoculares , Facoemulsificação , Humanos , Tomografia de Coerência Óptica/métodos , Implante de Lente Intraocular , Opacificação da Cápsula/diagnóstico , Opacificação da Cápsula/etiologia , Opacificação da Cápsula/patologia , Cápsula do Cristalino/patologia , Fibrose , Desenho de Prótese , Catarata/patologia , Complicações Pós-Operatórias/patologia
9.
Curr Eye Res ; 48(7): 627-638, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-36988559

RESUMO

PURPOSE: Posterior capsular opacification is the most common complication after cataract surgery. Abnormal proliferation, migration, epithelial-mesenchymal transition, and extracellular matrix synthesis of residual lens epithelial cells are considered to be the main pathogenic mechanisms. Hepatocyte nuclear factor 4α has been reported to regulate epithelial-mesenchymal transition in different tumors. Our objective was to investigate the role and mechanism of hepatocyte nuclear factor 4α in posterior capsular opacification. METHODS: Hepatocyte nuclear factor 4α expression was tested in posterior capsular opacification rat lens capsules and cell models. Hepatocyte nuclear factor 4α was knocked down using small hairpin RNA. Cell viability was measured by Cell Counting Kit-8 assay. Cell migration ability was evaluated by wound healing and Transwell assays. Epithelial-mesenchymal transition markers were detected by Western blotting. Transcriptome sequencing was used to screen for downstream effectors of hepatocyte nuclear factor 4α. Chromatin immunoprecipitation and a dual luciferase reporter assay were used to determine the binding of hepatocyte nuclear factor 4α to the MMP2 promoter region. RESULTS: Hepatocyte nuclear factor 4α was downregulated in posterior capsular opacification tissue and cell models. In vitro studies showed that hepatocyte nuclear factor 4α deletion facilitated cell proliferation, migration, and epithelial-mesenchymal transition protein marker expression in lens epithelial cells. Hepatocyte nuclear factor 4α knockdown promoted epithelial-mesenchymal transition and migration of lens epithelial cells via MMP2. Mechanistically, hepatocyte nuclear factor 4α decreased MMP2 expression by binding to the MMP2 promoter region. Hepatocyte nuclear factor 4α deletion also promoted epithelial-mesenchymal transition in rat lens capsules. CONCLUSIONS: We demonstrated that hepatocyte nuclear factor 4α inhibited epithelial-mesenchymal transition of lens epithelial cells by directly binding to the MMP2 promoter region and inhibiting the expression of MMP2, thus leading to retardation of posterior capsular opacification formation and development, suggesting that hepatocyte nuclear factor 4α is a potential therapeutic target for posterior capsular opacification.


Assuntos
Opacificação da Cápsula , Fator 4 Nuclear de Hepatócito , Cápsula do Cristalino , Cristalino , Metaloproteinase 2 da Matriz , Animais , Ratos , Opacificação da Cápsula/metabolismo , Cápsulas/metabolismo , Movimento Celular , Proliferação de Células , Células Epiteliais/metabolismo , Transição Epitelial-Mesenquimal , Cápsula do Cristalino/patologia , Cristalino/metabolismo , Metaloproteinase 2 da Matriz/metabolismo , Fator 4 Nuclear de Hepatócito/metabolismo
10.
Cells ; 11(21)2022 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-36359852

RESUMO

Cataracts are treated by lens fiber cell removal followed by intraocular lens (IOL) implantation into the lens capsule. While effective, this procedure leaves behind numerous lens epithelial cells (LECs) which undergo a wound healing response that frequently leads to posterior capsular opacification (PCO). In order to elucidate the acute response of LECs to lens fiber cell removal which models cataract surgery (post cataract surgery, PCS), RNA-seq was conducted on LECs derived from wild type mice at 0 and 6 h PCS. This analysis found that LECs upregulate the expression of numerous proinflammatory cytokines and profibrotic regulators by 6 h PCS suggesting rapid priming of pathways leading to inflammation and fibrosis PCS. LECs also highly upregulate the expression of numerous immediate early transcription factors (IETFs) by 6 h PCS and immunolocalization found elevated levels of these proteins by 3 h PCS, and this was preceded by the phosphorylation of ERK1/2 in injured LECs. Egr1 and FosB were among the highest expressed of these factors and qRT-PCR revealed that they also upregulate in explanted mouse lens epithelia suggesting potential roles in the LEC injury response. Analysis of lenses lacking either Egr1 or FosB revealed that both genes may regulate a portion of the acute LEC injury response, although neither gene was essential for expression of either proinflammatory or fibrotic markers at later times PCS suggesting that IETFs may work in concert to mediate the LEC injury response following cataract surgery.


Assuntos
Opacificação da Cápsula , Extração de Catarata , Traumatismos Oculares , Cápsula do Cristalino , Cristalino , Camundongos , Animais , Cápsula do Cristalino/metabolismo , Cápsula do Cristalino/patologia , Cristalino/metabolismo , Células Epiteliais/metabolismo , Opacificação da Cápsula/metabolismo , Traumatismos Oculares/metabolismo , Fatores de Transcrição/metabolismo , Fibrose
11.
J Mater Chem B ; 10(41): 8398-8406, 2022 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-36250493

RESUMO

Posterior capsular opacification (PCO), resulting from undesired intracapsular cell proliferation, is the most common complication of intraocular lens (IOL) implantation after cataract surgery. In recent years, IOLs have been developed into a drug delivery platform. Compared with traditional eye drops, drug-loaded IOLs have the characteristics of independent patient compliance and no other operation except surgical implantation. In this work, a series of poly(glycidyl methacrylate-co-2-(2-ethoxyethoxy)ethyl acrylate) (PGE) acrylic intraocular lens materials were synthesized as drug delivery platforms. The PGE synthesized with 10% crosslinking agent has excellent optical, foldable, and thermomechanical properties. An aldehyde group was subsequently introduced into the PGE chains, and an antiproliferative drug (doxorubicin) was immobilized onto the PGE chains via an H+-sensitive imine bond. The IOL exhibits H+-dependent Dox release behavior in a simulated pathological environment. The in vitro and in vivo systematical evaluations indicate that such a responsively drug-eluting PGE IOL can effectively prevent PCO.


Assuntos
Catarata , Cápsula do Cristalino , Lentes Intraoculares , Facoemulsificação , Humanos , Aldeídos , Doxorrubicina/farmacologia , Iminas , Cápsula do Cristalino/patologia , Implante de Lente Intraocular/efeitos adversos , Lentes Intraoculares/efeitos adversos , Soluções Oftálmicas , Facoemulsificação/efeitos adversos , Complicações Pós-Operatórias/prevenção & controle
12.
Retina ; 42(2): 396-403, 2022 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-34483316

RESUMO

PURPOSE: To describe the ophthalmic manifestations of familial transthyretin amyloidosis (FTA) mutations, including Asp38Ala and Thr59Lys, which have not been previously reported to have ocular involvement. METHODS: This is an observational case series of prospectively collected data of 16 patients with FTA who were taking tafamidis for mild peripheral neuropathy and underwent a comprehensive ophthalmic examination at a single tertiary center, between January 2013 and March 2020. The ocular involvement of each FTA mutation type and the specific manifestations were the main outcome measures. RESULTS: Six of 16 patients with FTA manifested ocular involvement. Ocular involvement was noted in two of three patients with Glu89Lys mutations having retinal deposits, retinal hemorrhages, and corneal opacity. Three of nine patients with Asp38Ala mutations and one of two patients with Thr59Lys mutations showed ocular involvement that had not been previously described. The ophthalmic findings included glaucoma, anterior lens capsule opacity, vitreous opacity, and retinal deposits. The decrease in vascular flow due to perivascular cuffing of the amyloid deposits was detected by optical coherence tomography angiography. CONCLUSION: The current study newly described that two transthyretin mutation types of FTA, Asp38Ala and Thr59Lys, may manifest with ocular findings such as anterior lens capsule opacity and retinal deposits.


Assuntos
Neuropatias Amiloides Familiares/diagnóstico , Neuropatias Amiloides Familiares/genética , Cápsula do Cristalino/patologia , Doenças do Cristalino/diagnóstico , Mutação Puntual , Pré-Albumina/genética , Doenças Retinianas/diagnóstico , Eletroculografia , Eletrorretinografia , Feminino , Angiofluoresceinografia , Humanos , Doenças do Cristalino/genética , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Doenças Retinianas/genética , Estudos Retrospectivos , Tomografia de Coerência Óptica
13.
Ophthalmology ; 129(1): 26-34, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34246658

RESUMO

PURPOSE: To report the incidence of postoperative endophthalmitis (PE) after immediate sequential bilateral cataract surgery (ISBCS) in Sweden. DESIGN: Retrospective cohort registry study. PARTICIPANTS: Patient data from 1 457 172 cataract extractions, including 1 364 934 unilateral surgeries and 92 238 ISBCSs. METHODS: Endophthalmitis cases reported to the Swedish National Cataract Register (NCR) during a 16-year period (2002-2017) were analyzed in comparison to all control cases with regard to patient characteristics, surgical technique, and capsule complication. MAIN OUTCOME MEASURE: Incidence and determinants for PE in ISBCS compared with unilateral surgeries. RESULTS: A total of 422 cases of PE were identified in 1 457 172 cataract extractions, yielding an overall incidence of 0.029% (95% confidence interval [CI], 0.0262-0.0317). For unilateral procedures, the rate was 0.0299% (95% CI, 0.0270-0.0328) or 408 cases in 1 364 934 operations, whereas that for ISBCS was 0.0152% (95% CI, 0.0072-0.0231) or 14 incidents in 92 238 operations (P = 0.01). In a logistic regression model including all cataract procedures, nonuse of intracameral (IC) antibiotics (ABs), capsule complication, age 85 years or more, male gender, and ocular comorbidity were found to be independent risk factors for PE. All these parameters were less frequent in ISBCS. Notwithstanding, in the same multivariate analysis, ISBCS in itself was associated with a significantly lower risk for PE. At follow-up, 5 of the 14 PE cases in the ISBCS cohort had a visual acuity (VA) of 20/200 or worse. Of these, one 93-year-old ISBCS patient developed bilateral infection. CONCLUSIONS: After ISBCS in Sweden, PE occurred once in 6600 surgeries. The risk of sustaining a final VA of 20/200 or less was 1 incident in 18 000 operated eyes. When counseling potential ISBCS patients about the risk of PE, it seems reasonable to state that the reported risk in the literature is lower than that with unilateral surgery but not negligible. Precautions remain necessary.


Assuntos
Extração de Catarata/efeitos adversos , Endoftalmite/epidemiologia , Infecções Oculares Bacterianas/epidemiologia , Complicações Pós-Operatórias , Sistema de Registros/estatística & dados numéricos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Antibacterianos/uso terapêutico , Estudos de Casos e Controles , Criança , Endoftalmite/tratamento farmacológico , Endoftalmite/microbiologia , Endoftalmite/fisiopatologia , Infecções Oculares Bacterianas/tratamento farmacológico , Infecções Oculares Bacterianas/microbiologia , Infecções Oculares Bacterianas/fisiopatologia , Feminino , Humanos , Incidência , Cápsula do Cristalino/patologia , Implante de Lente Intraocular , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Suécia/epidemiologia , Acuidade Visual/fisiologia
14.
Exp Eye Res ; 210: 108704, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34302851

RESUMO

Advanced glycation end products (AGEs) accumulate with age in human lens capsules. AGEs in lens capsules potentiate the transforming growth factor beta-2-mediated mesenchymal transition of lens epithelial cells, which suggests that they play a role in posterior capsule opacification after cataract surgery. We measured AGEs by liquid chromatography-mass spectrometry in capsulorhexis specimens obtained during cataract surgery from nondiabetic and diabetic patients with and without established retinopathy. Our data showed that the levels of most AGEs (12 out of 13 measured) were unaltered in diabetic patients and diabetic patients with retinopathy compared to nondiabetic patients. There was one exception: glucosepane, which was significantly higher in diabetic patients, both with (6.85 pmol/µmol OH-proline) and without retinopathy (8.32 pmol/µmol OH-proline), than in nondiabetic patients (4.01 pmol/µmol OH-proline). Our study provides an explanation for the similar incidence of posterior capsule opacification between nondiabetic and diabetic cataract patients observed in several studies.


Assuntos
Catarata/metabolismo , Retinopatia Diabética/metabolismo , Produtos Finais de Glicação Avançada/metabolismo , Cápsula do Cristalino/metabolismo , Idoso , Glicemia/metabolismo , Capsulorrexe , Catarata/patologia , Cromatografia Líquida , Diabetes Mellitus/metabolismo , Diabetes Mellitus/patologia , Retinopatia Diabética/patologia , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Cápsula do Cristalino/patologia , Masculino , Pessoa de Meia-Idade , Espectrometria de Massas em Tandem
15.
Exp Eye Res ; 209: 108676, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34146586

RESUMO

The transcriptome of mammalian tissues differs between males and females, and these differences can change across the lifespan, likely regulating known sexual dimorphisms in disease prevalence and severity. Cataract, the most prevalent disease of the ocular lens, occurs at similar rates in young individuals, but its incidence is elevated in older women compared to men of the same age. However, the influence of sex on the lens transcriptome was unknown. RNAseq based transcriptomic profiling of young adult C57BL/6J mouse lens epithelial and fiber cells revealed that few genes are differentially expressed between the sexes. In contrast, lens cells from aged (24 month old) male and female C57BL/6J mice differentially expressed many genes, including several whose expression is lens preferred. Like cataracts, posterior capsular opacification (PCO), a major sequela of cataract surgery, may also be more prevalent in women. Lens epithelial cells isolated from mouse eyes 24 h after lens fiber cell removal exhibited numerous transcriptomic differences between the sexes, including genes implicated in complement cascades and extracellular matrix regulation, and these differences are much more pronounced in aged mice than in young mice. These results provide an unbiased basis for future studies on how sex affects the lens response to aging, cataract development, and cataract surgery.


Assuntos
Opacificação da Cápsula/genética , Extração de Catarata/efeitos adversos , Matriz Extracelular/genética , Regulação da Expressão Gênica , Cristalino/metabolismo , Complicações Pós-Operatórias/epidemiologia , Transcriptoma/genética , Animais , Opacificação da Cápsula/metabolismo , Opacificação da Cápsula/cirurgia , Modelos Animais de Doenças , Células Epiteliais/metabolismo , Células Epiteliais/patologia , Matriz Extracelular/metabolismo , Feminino , Perfilação da Expressão Gênica/métodos , Cápsula do Cristalino/metabolismo , Cápsula do Cristalino/patologia , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Complicações Pós-Operatórias/genética , Complicações Pós-Operatórias/metabolismo , Fatores Sexuais , Cicatrização/genética
16.
Sci Rep ; 11(1): 2994, 2021 02 04.
Artigo em Inglês | MEDLINE | ID: mdl-33542371

RESUMO

Marfan syndrome (MFS) is a hereditary disease with an incidence of 0.3% in the general population. Approximately 60% of MFS patients with FBN1 gene mutation will suffer ectopia lentis (EL) from the age of 3. With the development of EL, severe loss of vision will accrue because of lens tilt and glaucoma. Cionni modified capsular tension rings (MCTR) has been applied in the surgery for EL in MFS patients. To evaluate visual acuity and safety of using MCTR during lens subluxation surgery in MFS patients, 66 MFS patients (110 eyes) were included in our study, with the mean duration of follow-up of 4.7 months (SD 1.76 months). The capsular bags were preserved in 101 eyes (91.81%) with MCTR implantation. There was an overall significant improvement in BCVA at 1-month follow-up which was maintained at 3 months. Multivariable linear regression revealed that older age at first visit was associated with greater postoperative BCVA at the 1-month follow-up (P = 0.007). A significant difference was found between different degrees of lens subluxation and the length of surgical time and complications. At follow-up, only two eyes (1.98%) were identified to have developed retinal detachments. In conclusion, better visual outcomes can be achieved when patients received an early operation with MCTR implantation.


Assuntos
Ectopia do Cristalino/genética , Fibrilina-1/genética , Subluxação do Cristalino/cirurgia , Síndrome de Marfan/cirurgia , Acuidade Visual/fisiologia , Adolescente , Criança , Pré-Escolar , Ectopia do Cristalino/etiologia , Ectopia do Cristalino/cirurgia , Feminino , Humanos , Complicações Intraoperatórias/fisiopatologia , Complicações Intraoperatórias/cirurgia , Cápsula do Cristalino/patologia , Implante de Lente Intraocular/métodos , Subluxação do Cristalino/complicações , Subluxação do Cristalino/fisiopatologia , Masculino , Síndrome de Marfan/complicações , Síndrome de Marfan/genética , Síndrome de Marfan/fisiopatologia , Facoemulsificação , Fatores de Risco
17.
J Cell Physiol ; 236(4): 2659-2668, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-32869287

RESUMO

A postcataract surgery complication in patients with retinitis pigmentosa (RP) is lens capsular contraction. To identify potential proteins contributing to this phenomenon, high-performance liquid chromatography/mass spectrometry-based proteomic analysis was conducted with aqueous humor samples collected from 11 patients who underwent cataract surgeries, with four patients diagnosed as RP and cataract (RP group) and the other seven with only senile cataract group. The upregulated proteins in the RP group were enriched in wound response, while downregulated proteins were enriched in cell adhesion and lens crystallins. Receptors of two dramatically upregulated proteins tenascin-C (TNC) and serotransferrin were found expressed in human lens epithelial cells (HLEs). TNC can promote primary HLEs proliferation and cell line HLE-B3 migration. This study indicates aqueous humor proteomic analysis serves as an effective way to unveil the pathogenesis of RP complications. TNC is a potential target of stimulating HLEs proliferation in RP concomitant cataract patients that worth further research.


Assuntos
Humor Aquoso/metabolismo , Catarata/metabolismo , Proteoma , Proteômica , Retinose Pigmentar/metabolismo , Idoso , Catarata/diagnóstico , Catarata/etiologia , Catarata/terapia , Extração de Catarata/efeitos adversos , Linhagem Celular , Movimento Celular , Proliferação de Células , Cromatografia Líquida de Alta Pressão , Feminino , Humanos , Cápsula do Cristalino/metabolismo , Cápsula do Cristalino/patologia , Doenças do Cristalino/etiologia , Doenças do Cristalino/metabolismo , Doenças do Cristalino/patologia , Masculino , Espectrometria de Massas , Pessoa de Meia-Idade , Retinose Pigmentar/complicações , Retinose Pigmentar/diagnóstico , Tenascina/genética , Tenascina/metabolismo , Resultado do Tratamento
18.
Ophthalmic Genet ; 42(2): 132-138, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33251924

RESUMO

Background: To first report and study the ultrastructural and immunofluorescence abnormalities of the lens anterior capsules in a patient with autosomal recessive Alport syndrome.Methods: Two anterior lens capsules were collected in femtosecond laser-assisted cataract surgeries from a 29-year-old male patient with bilateral lenticonus caused by autosomal recessive Alport syndrome. The left capsule was examined by transmission electron microscopy and the right capsule was serial sectioned and stained with antibodies against the α2, α3, and α4 chains of type Ⅳ collagen. Anterior lens capsules of another two uncomplicated age-related cataract patients were collected and treated in the same way as the control.Results: The novel findings are that the mitochondria in lens epithelial cells in autosomal recessive Alport syndrome patients increased, twisted, and exhibited high electron density. Characteristic ultrastructure changes of capsule thinning, vertical dehiscence, and irregular-shaped lens epithelial cells were also observed in the left anterior lens capsule. Normal reactivity against the α2 chain and decreased reactivity against the α3 and α4 chains were observed in the right anterior lens capsule.Conclusions: The homozygous c.4599 T > G mutation of COL4A4 not only affects the formation of type Ⅳ collagen networks in the extracellular matrix, but also affects the morphology and survival of the lens epithelial cells in the patient with autosomal recessive Alport syndrome. This study is the first report of the ultrastructural and immunofluorescence changes of anterior lens capsules in autosomal recessive Alport syndrome.


Assuntos
Imunofluorescência/métodos , Cápsula do Cristalino/patologia , Doenças do Cristalino/patologia , Microscopia Eletrônica de Transmissão/métodos , Nefrite Hereditária/complicações , Adulto , Humanos , Cápsula do Cristalino/metabolismo , Doenças do Cristalino/etiologia , Doenças do Cristalino/metabolismo , Masculino
19.
Sci Rep ; 10(1): 20532, 2020 11 25.
Artigo em Inglês | MEDLINE | ID: mdl-33239706

RESUMO

Late spontaneous in-the-bag intraocular lens (IOL) dislocation is a complication presenting 6 months or later after cataract surgery. We aimed to characterize the cells in the lens capsules (LCs) of 18 patients with spontaneous late in-the-bag IOL dislocation. Patients' average age was 82.6 ± 1.5 years (range 72-98), and most of them had pseudoexfoliation syndrome (PEX). Cells from the LCs were positive for myofibroblast (αSMA), proliferation (Ki-67, PCNA), early lens development/lens progenitor (SOX2, PAX6), chemokine receptor (CXCR4), and transmembrane (N-cadherin) markers, while negative for epithelial (E-cadherin) marker. Moreover, the cells produced abundant fibronectin, type I and type V collagen in the nearby extracellular matrix (ECM). During ex vivo cultivation of dislocated IOL-LCs in toto, the cells proliferated and likely migrated onto the IOL's anterior side. EdU proliferation assay confirmed the proliferation potential of the myofibroblasts (MFBs) in dislocated IOL-LCs. Primary cultured lens epithelial cells/MFBs isolated from the LC of dislocated IOLs could induce collagen matrix contraction and continuously proliferated, migrated, and induced ECM remodeling. Taken together, this indicates that long-lived MFBs of dislocated IOLs might contribute to the pathogenic mechanisms in late in-the-bag IOL dislocation.


Assuntos
Cápsula do Cristalino/patologia , Subluxação do Cristalino/patologia , Lentes Intraoculares , Miofibroblastos/patologia , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/metabolismo , Movimento Celular , Proliferação de Células , Células Cultivadas , Colágeno , Cristalinas/metabolismo , Células Epiteliais/metabolismo , Transição Epitelial-Mesenquimal , Matriz Extracelular/metabolismo , Feminino , Regulação da Expressão Gênica , Humanos , Subluxação do Cristalino/genética , Masculino
20.
J Investig Med High Impact Case Rep ; 8: 2324709620953283, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32862718

RESUMO

Juvenile idiopathic arthritis-associated uveitis is rare in the Japanese population. In this article, we report a child whose macular edema was controlled for years after cataract surgery with adalimumab, and reviewed 26 Japanese patients in the literature. In this case report, a 4-year-old boy developed band keratopathy, posterior iris synechiae, and complicated cataract in both eyes. Oral prednisolone prescribed at another hospital was discontinued due to high intraocular pressure in both eyes as a steroid responder. At the age of 5 years, he started oral methotrexate 8 mg weekly for recurrent bilateral iridocyclitis and then underwent lensectomy with core vitrectomy in both eyes. Planned intraocular lens implantation was cancelled at surgery because the anterior vitreous had severe inflammatory opacity with diffuse retinal edema in both eyes. Due to persistent macular edema in both eyes 5 months postoperatively, at the age of 6 years, he began to use adalimumab injection 20 mg every 2 weeks. The macular structure depicted by optical coherence tomography became normal in 2 months. At final visit at the age of 11 years, he had the best-corrected visual acuity of 0.8 in the right eye and 0.4 in the left eye, with adalimumab 40 mg every 2 weeks and methotrexate 8 mg weekly. In conclusion, macular edema persistent despite oral methotrexate after cataract surgery could be controlled for long term by adalimumab in a child with juvenile idiopathic arthritis. In the Japanese literature, only 26 additional cases with juvenile idiopathic arthritis-associated uveitis have been reported so far.


Assuntos
Adalimumab/administração & dosagem , Artrite Juvenil/complicações , Catarata/etiologia , Iridociclite/complicações , Edema Macular/tratamento farmacológico , Metotrexato/administração & dosagem , Criança , Pré-Escolar , Humanos , Japão , Cápsula do Cristalino/patologia , Cápsula do Cristalino/cirurgia , Masculino , Complicações Pós-Operatórias , Tomografia de Coerência Óptica , Acuidade Visual , Vitrectomia
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