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Włodarski A, Szymczak-Pajor I, Kasznicki J, Antanaviciute EM, Szymańska B, Śliwińska A. Association of Glutathione Peroxidase 3 (GPx3) and miR-196a with Carbohydrate Metabolism Disorders in the Elderly. Int J Mol Sci 2024; 25:5409. [PMID: 38791447 PMCID: PMC11121935 DOI: 10.3390/ijms25105409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/07/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024] Open
Abstract
The escalating prevalence of carbohydrate metabolism disorders (CMDs) prompts the need for early diagnosis and effective markers for their prediction. Hyperglycemia, the primary indicator of CMDs including prediabetes and type 2 diabetes mellitus (T2DM), leads to overproduction of reactive oxygen species (ROS) and oxidative stress (OxS). This condition, resulting from chronic hyperglycemia and insufficient antioxidant defense, causes damage to biomolecules, triggering diabetes complications. Additionally, aging itself can serve as a source of OxS due to the weakening of antioxidant defense mechanisms. Notably, previous research indicates that miR-196a, by downregulating glutathione peroxidase 3 (GPx3), contributes to insulin resistance (IR). Additionally, a GPx3 decrease is observed in overweight/obese and insulin-resistant individuals and in the elderly population. This study investigates plasma GPx3 levels and miR-196a expression as potential CMD risk indicators. We used ELISA to measure GPx3 and qRT-PCR for miR-196a expression, supplemented by multivariate linear regression and receiver operating characteristic (ROC) analysis. Our findings included a significant GPx3 reduction in the CMD patients (n = 126), especially in the T2DM patients (n = 51), and a decreasing trend in the prediabetes group (n = 37). miR-196a expression, although higher in the CMD and T2DM groups than in the controls, was not statistically significant, potentially due to the small sample size. In the individuals with CMD, GPx3 levels exhibited a negative correlation with the mass of adipose tissue, muscle, and total body water, while miR-196a positively correlated with fat mass. In the CMD group, the analysis revealed a weak negative correlation between glucose and GPx3 levels. ROC analysis indicated a 5.2-fold increased CMD risk with GPx3 below 419.501 ng/mL. Logistic regression suggested that each 100 ng/mL GPx3 increase corresponded to a roughly 20% lower CMD risk (OR = 0.998; 95% CI: 0.996-0.999; p = 0.031). These results support the potential of GPx3 as a biomarker for CMD, particularly in T2DM, and the lack of a significant decline in GPx3 levels in prediabetic individuals suggests that it may not serve reliably as an early indicator of CMDs, warranting further large-scale validation.
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Affiliation(s)
- Adam Włodarski
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 92-213 Lodz, Poland; (A.W.); (I.S.-P.)
| | - Izabela Szymczak-Pajor
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 92-213 Lodz, Poland; (A.W.); (I.S.-P.)
| | - Jacek Kasznicki
- Department of Internal Diseases, Diabetology and Clinical Pharmacology, Medical University of Lodz, 92-213 Lodz, Poland;
| | - Egle Morta Antanaviciute
- Centre for Cellular Microenvironments, Mazumdar-Shaw Advanced Research Centre, University of Glasgow, Glasgow G12 8QQ, UK;
| | - Bożena Szymańska
- Research Laboratory CoreLab, Medical University of Lodz, Mazowiecka 6/8 St., 92-215 Lodz, Poland;
| | - Agnieszka Śliwińska
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 92-213 Lodz, Poland; (A.W.); (I.S.-P.)
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Tang YF, Duan ZH. Clinical efficacy of femtosecond laser-assisted phacoemulsification in diabetic cataract patients. World J Clin Cases 2024; 12:1733-1741. [PMID: 38660074 PMCID: PMC11036478 DOI: 10.12998/wjcc.v12.i10.1733] [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: 01/05/2024] [Revised: 02/25/2024] [Accepted: 03/08/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND Diabetic patients with cataracts encounter specific difficulties during cataract surgery due to alterations in microcirculation, blood supply, metabolism, and the microenvironment. Traditional phacoemulsification may not fully tackle these issues, especially in instances with substantial preoperative astigmatism. The utilization of femtosecond laser-assisted phacoemulsification, in conjunction with Toric intraocular lens (IOL) implantation, offers a potentially more efficient strategy. This research seeks to evaluate the efficacy and possible complications of this approach in diabetic cataract patients.
AIM To investigate the clinical efficacy and complications of femtosecond laser-assisted phacoemulsification combined with Toric IOL implantation in diabetic cataract patients, comparing it with traditional phacoemulsification methods.
METHODS This retrospective study enrolled 120 patients with diabetes cataract from May 2019 to May 2021. The patients were divided into two groups: the control group underwent traditional phacoemulsification and Toric IOL implantation, while the treatment group received Len Sx femtosecond laser-assisted treatment. Outcome measures included naked eye vision, astigmatism, high-level ocular phase difference detection, clinical efficacy, and complication.
RESULTS There were no significant preoperative differences in astigmatism or naked eyesight between the two groups. However, postoperative improvements were observed in both groups, with the treatment group showing greater enhancements in naked eye vision and astigmatism six months after the procedure. High-level corneal phase difference tests also indicated significant differences in favor of the treatment group.
CONCLUSION This study suggests that femtosecond laser-assisted phacoemulsification combined with Toric IOL implantation appears to be more effective in enhancing postoperative vision in diabetic cataract patients compared to traditional methods offering valuable insights for clinical practice.
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Affiliation(s)
- Yi-Fei Tang
- Department of Glaucoma and Cataracts, Han Yang Eyegood Ophthalmic Hospital, Wuhan 430056, Hubei Province, China
| | - Zhi-Hui Duan
- Department of Glaucoma and Cataracts, Han Yang Eyegood Ophthalmic Hospital, Wuhan 430056, Hubei Province, China
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Guo Z, Ma X, Zhang RX, Yan H. Oxidative stress, epigenetic regulation and pathological processes of lens epithelial cells underlying diabetic cataract. ADVANCES IN OPHTHALMOLOGY PRACTICE AND RESEARCH 2023; 3:180-186. [PMID: 38106550 PMCID: PMC10724013 DOI: 10.1016/j.aopr.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/11/2023] [Accepted: 10/04/2023] [Indexed: 12/19/2023]
Abstract
Background Cataract is a blinding disease worldwide. It is an age-related disease that mainly occurs in people over 65 years old. Cataract is also prevalent in patients with diabetes mellites (DM). The pathological mechanisms underlying diabetic cataract (DC) are more complex than that of age-related cataract. Studies have identified that polyol pathway, advanced glycation end products (AGEs) and oxidative stress are the primary pathogenesis of DC. In recent years, molecular-level regulations and pathological processes of lens epithelial cells (LECs) have been confirmed to play roles in the initiation and progression of DC. A comprehensive understanding and elucidation of how chronic hyperglycemia drives molecular-level regulations and cytopathological processes in the lens will shed lights on the prevention, delay and treatment of DC. Main text Excessive glucose in the lens enhances polyol pathway and AGEs formation. Polyol pathway causes imbalance in the ratio of NADPH/NADP+ and NADH/NAD+. Decrease in NADPH/NADP+ ratio compromises antioxidant enzymes, while increase in NADH/NAD+ ratio promotes reactive oxygen species (ROS) overproduction in mitochondria, resulting in oxidative stress. Oxidative stress in the lens causes oxidation of DNA, proteins and lipids, leading to abnormalities in their structure and functions. Glycation of proteins by AGEs decreases solubility of proteins. High glucose triggered epigenetic regulations directly or indirectly affect expressions of genes and proteins in LECs. Changes in autophagic activity, increases in fibrosis and apoptosis of LECs destroy the morphological structure and physiological functions of the lens epithelium, disrupting lens homeostasis. Conclusions In both diabetic animal models and diabetics, oxidative stress plays crucial roles in the formation of cataract. Epigenetic regulations, include lncRNA, circRNA, microRNA, methylation of RNA and DNA, histone acetylation and pathological processes, include autophagy, fibrosis and apoptosis of LECs also involved in DC.
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Affiliation(s)
- Zaoxia Guo
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Xiaopan Ma
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Rui Xue Zhang
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Hong Yan
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi, China
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, China
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Zhao W, Chen S, Lu B, Wu D, Gu Y, Hao S, Sheng F, Xu Y, Han Y, Chen R, Zhou L, Fu Q, Yao K. Upregulation of EphA2 is associated with apoptosis in response to H 2O 2 and UV radiation-induced cataracts. Arch Biochem Biophys 2023; 747:109756. [PMID: 37714253 DOI: 10.1016/j.abb.2023.109756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 09/07/2023] [Accepted: 09/13/2023] [Indexed: 09/17/2023]
Abstract
In this article, we examine the role of erythropoietin-producing hepatocellular receptor A2 (EphA2) in the apoptosis of lens epithelial cells (LECs) in H2O2 and UV radiation-induced cataracts. We treated SRA01/04 cells with H2O2 or ultraviolet (UV) radiation to create a cataract cell model. We constructed a cataract lens model by exposing mice to UV radiation. We used CCK8 assays, Annexin V-FITC analysis, and immunohistochemical staining to explore proliferation and apoptosis of the cataract model. Thereafter, we used quantitative real-time PCR (qPCR) analysis, Western blot assays, and immunofluorescence to determine gene and protein expression levels. We also employed Crispr/Cas9 gene editing to create an EphA2 knockout in SRA01/04 cells. Results: H2O2 or UV radiation induced SRA01/04 cells showed EphA2 gene upregulation. CCK8 and apoptosis assays showed that EphA2 over-expression (OE) reduced epithelial cell apoptosis, but knockout of EphA2 induced it in response to H2O2 and UV radiation, respectively. Mutation of the EphA2 protein kinase domain (c.2003G > A, p. G668D) had a limited effect on cell apoptosis. In vivo, the EphA2 protein level increased in the lenses of UV-treated mice. Our results showed that EphA2 was upregulated in SRA01/04 cells in response to H2O2 and UV radiation. Mutation of the EphA2 protein kinase domain (c.2003G > A, p. G668D) had a limited effect on H2O2 and UV radiation-induced cell apoptosis. We confirmed this change with an experiment on UV-treated mice. The present study established a novel association between EphA2 and LEC apoptosis.
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Affiliation(s)
- Wei Zhao
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Shuying Chen
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Bing Lu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Di Wu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Yuzhou Gu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Shengjie Hao
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Feiyin Sheng
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Yili Xu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Yu Han
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Rongrong Chen
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Lei Zhou
- School of Optometry, Department of Applied Biology and Chemical Technology, Research Centre for SHARP Vision (RCSV), The Hong Kong Polytechnic University, Hong Kong, China; Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong, China
| | - Qiuli Fu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China.
| | - Ke Yao
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China.
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Cai L, Han XY, Li D, Ma DM, Shi YM, Lu Y, Yang J. Analysis of N6-methyladenosine-modified mRNAs in diabetic cataract. World J Diabetes 2023; 14:1077-1090. [PMID: 37547588 PMCID: PMC10401451 DOI: 10.4239/wjd.v14.i7.1077] [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: 03/06/2023] [Revised: 03/27/2023] [Accepted: 04/27/2023] [Indexed: 07/12/2023] Open
Abstract
BACKGROUND Cataracts remain a prime reason for visual disturbance and blindness all over the world, despite the capacity for successful surgical replacement with artificial lenses. Diabetic cataract (DC), a metabolic complication, usually occurs at an earlier age and progresses faster than age-related cataracts. Evidence has linked N6-methyladenosine (m6A) to DC progression. However, there exists a lack of understanding regarding RNA m6A modifications and the role of m6A in DC pathogenesis.
AIM To elucidate the role played by altered m6A and differentially expressed mRNAs (DEmRNAs) in DC.
METHODS Anterior lens capsules were collected from the control subjects and patients with DC. M6A epitranscriptomic microarray was performed to investigate the altered m6A modifications and determine the DEmRNAs. Through Gene Ontology and pathway enrichment (Kyoto Encyclopedia of Genes and Genomes) analyses, the potential role played by dysregulated m6A modification was predicted. Real-time polymerase chain reaction was further carried out to identify the dysregulated expression of RNA methyltransferases, demethylases, and readers.
RESULTS Increased m6A abundance levels were found in the total mRNA of DC samples. Bioinformatics analysis predicted that ferroptosis pathways could be associated with m6A-modified mRNAs. The levels of five methylation-related genes-RBM15, WTAP, ALKBH5, FTO, and YTHDF1-were upregulated in DC samples. Upregulation of RBM15 expression was verified in SRA01/04 cells with high-glucose medium and in samples from DC patients.
CONCLUSION M6a mRNA modifications may be involved in DC progression via the ferroptosis pathway, rendering novel insights into therapeutic strategies for DC.
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Affiliation(s)
- Lei Cai
- Department of Ophthalmology, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Ministry of Health, Shanghai 200031, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
- Visual Rehabilitation Professional Committee, Chinese Association of Rehabilitation Medicine, Shanghai 200031, China
| | - Xiao-Yan Han
- Department of Ophthalmology, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Ministry of Health, Shanghai 200031, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
- Visual Rehabilitation Professional Committee, Chinese Association of Rehabilitation Medicine, Shanghai 200031, China
| | - Dan Li
- Department of Ophthalmology, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Ministry of Health, Shanghai 200031, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
- Visual Rehabilitation Professional Committee, Chinese Association of Rehabilitation Medicine, Shanghai 200031, China
- State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200031, China
| | - Dong-Mei Ma
- Department of Ophthalmology, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Ministry of Health, Shanghai 200031, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
- Visual Rehabilitation Professional Committee, Chinese Association of Rehabilitation Medicine, Shanghai 200031, China
| | - Yu-Meng Shi
- Department of Ophthalmology, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Ministry of Health, Shanghai 200031, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
- Visual Rehabilitation Professional Committee, Chinese Association of Rehabilitation Medicine, Shanghai 200031, China
| | - Yi Lu
- Department of Ophthalmology, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Ministry of Health, Shanghai 200031, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
- Visual Rehabilitation Professional Committee, Chinese Association of Rehabilitation Medicine, Shanghai 200031, China
| | - Jin Yang
- Department of Ophthalmology, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Ministry of Health, Shanghai 200031, China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
- Visual Rehabilitation Professional Committee, Chinese Association of Rehabilitation Medicine, Shanghai 200031, China
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Mishra D, Kashyap A, Srivastav T, Yadav A, Pandey S, Majhi MM, Verma K, Prabu A, Singh V. Enzymatic and biochemical properties of lens in age-related cataract versus diabetic cataract: A narrative review. Indian J Ophthalmol 2023; 71:2379-2384. [PMID: 37322647 PMCID: PMC10417962 DOI: 10.4103/ijo.ijo_1784_22] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 12/04/2022] [Accepted: 01/19/2023] [Indexed: 06/17/2023] Open
Abstract
Cataract is the leading cause of blindness worldwide. There is an increased incidence of cataract formation in the diabetic population due to several factors. Diabetes mellitus accelerates the development of cataract. Oxidative stress results in most of the diabetic complications including diabetic cataract. Oxidative stress leading to the expression of various enzymes has also been proven as crucial for cataractous changes in the lens in old age. A narrative review was undertaken to investigate the expression of different biochemical parameters as well as enzymes in diabetic and senile cataracts. Identification of these parameters is crucial for the prevention and treatment of blindness. Combinations of MeSH terms and key words were used to do literature search in PubMed. The search resulted 35 articles and among them, 13 were relevant to the topic and were included in synthesis of results. Seventeen different types of enzymes were identified in the senile and diabetic cataracts. Seven biochemical parameters were also identified. Alteration in biochemical parameters and expression of enzymes were comparable. Majority of the parameters were raised or altered in diabetic cataract compared to senile cataract.
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Affiliation(s)
- Deepak Mishra
- Regional Institute of Ophthalmology, Varanasi, Uttar Pradesh, India
| | - Anurag Kashyap
- Regional Institute of Ophthalmology, Varanasi, Uttar Pradesh, India
| | - Tanmay Srivastav
- MAA Vindhyavasini Autonomous State Medical College, Mirzapur, Uttar Pradesh, India
| | - Archana Yadav
- Regional Institute of Ophthalmology, Varanasi, Uttar Pradesh, India
| | - Swasti Pandey
- Regional Institute of Ophthalmology, Varanasi, Uttar Pradesh, India
| | | | - Kirti Verma
- Regional Institute of Ophthalmology, Varanasi, Uttar Pradesh, India
| | - A Prabu
- Government Tiruvannamalai Medical College and Hospital, Tiruvannamalai, Tamil Nadu, India
| | - Vibha Singh
- Regional Institute of Ophthalmology, Varanasi, Uttar Pradesh, India
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Circular RNA circ_0024037 suppresses high glucose-induced lens epithelial cell injury by targeting the miR-199a-5p/TP53INP1 axis. Mol Cell Toxicol 2023. [DOI: 10.1007/s13273-023-00340-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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Li YQ, Wang Q, Liu R, Li GA, He JL, Huang F, Zhou YF. Associations of exposure to multiple metals with the risk of age-related cataract in Anhui, China: a case-control study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:4680-4693. [PMID: 35972654 DOI: 10.1007/s11356-022-22494-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
It's well-known that multiple metal elements can lead to the change of oxidative stress response levels in vivo. However, their relationship with age-related cataract (ARC) had not been well studied. We designed a case-control study including 210 individuals with ARC and 210 matched control group. The metal levels in their urine specimens were measured using graphite furnace atomic absorption spectrometry (GFAAS) and inductively coupled plasma optical emission spectrometry (ICP-OES). Least Absolute Shrinkage and Selection Operator (LASSO) regression was used to select representative metals into the multi-element model and reduce dimension. Multivariate logic analysis and Bayesian kernel machine regression (BKMR) were subsequently used to explore the association of ARC risk with multiple metal elements. We found that magnesium (Mg), chromium (Cr), arsenic (As), manganese (Mn), and selenium (Se) were positively associated with ARC in the single-element model. The multiple exposure model indicated a positive association between Mg and As, in which the OR in their highest quartile were 3.32 (95% CI: 1.24-8.89) and 7.09 (95% CI: 2.56-19.63). The BKMR model also showed the effect of As increased monotonically with its increasing concentration, and high levels of Mg and As had a significant positive effect on ARC risk. In conclusion, we found that exposure to multiple metals was associated with increased ARC risk. Further research is needed to verify these findings in the future.
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Affiliation(s)
- Yan-Qing Li
- Department of Ophthalmology, First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Shushan District, Hefei, 230022, Anhui, China
| | - Qian Wang
- Department of Ophthalmology, First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Shushan District, Hefei, 230022, Anhui, China
| | - Ran Liu
- Department of Ophthalmology, First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Shushan District, Hefei, 230022, Anhui, China
| | - Guo-Ao Li
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China
| | - Jia-Liu He
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China
| | - Fen Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China
| | - Yan-Feng Zhou
- Department of Ophthalmology, First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Shushan District, Hefei, 230022, Anhui, China.
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Al Wadee Z, Ooi SL, Pak SC. Serum Magnesium Levels in Patients with Obstructive Sleep Apnoea: A Systematic Review and Meta-Analysis. Biomedicines 2022; 10:biomedicines10092273. [PMID: 36140382 PMCID: PMC9496273 DOI: 10.3390/biomedicines10092273] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Aims: Obstructive sleep apnoea (OSA) affects patients’ quality of life and health. Magnesium (Mg) is an essential mineral and a potent antioxidant. Mg deficiency can worsen oxidative stress caused by sleep deprivation or disorders. The impact of OSA on serum Mg levels and its health consequences remain unclear. Data Synthesis: This study systematically reviewed clinical studies investigating the serum Mg levels of OSA patients and the potential relationships with other biomarkers. Six articles were included for qualitative synthesis and quantitative analysis. Two out of four studies that compared OSA patients to healthy controls found them to have significantly lower serum Mg levels. Our meta-analysis with three studies shows that patients with OSA had significantly lower serum Mg with an effect size of −1.22 (95% CI: −2.24, −0.21). However, the mean serum Mg level of OSA patients (n = 251) pooled from five studies (1.90 mg/dL, 95% CI: 1.77, 2.04) does not differ significantly from the normal range between 1.82 to 2.30 mg/dL. OSA severity appears to affect serum Mg negatively. Serum Mg levels generally improve after treatment, coinciding with the improvement of OSA severity. Low serum Mg levels correlate with the worsening of cardiovascular risk biomarkers of C-reactive protein, ischaemia-modified albumin, and carotid intima-media thickness. The serum Mg levels also potentially correlate with biomarkers for lipid profile, glucose metabolism, calcium, and heavy metals. Conclusions: Sleep deprivation appears to deplete Mg levels of OSA patients, making them at risk of Mg deficiency, which potentially increases systemic inflammation and the risk of cardiovascular and metabolic diseases.
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Affiliation(s)
- Zahraa Al Wadee
- School of Dentistry and Medical Sciences, Charles Sturt University, Bathurst, NSW 2795, Australia
- Smiles Unlimited Dental Clinic, Fairfield, Sydney, NSW 2165, Australia
| | - Soo Liang Ooi
- School of Dentistry and Medical Sciences, Charles Sturt University, Bathurst, NSW 2795, Australia
| | - Sok Cheon Pak
- School of Dentistry and Medical Sciences, Charles Sturt University, Bathurst, NSW 2795, Australia
- Correspondence: ; Tel.: +61-2-6338-4952; Fax: +61-2-6338-4993
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Vázquez-Lorente H, Herrera-Quintana L, Molina-López J, Gamarra-Morales Y, López-González B, Planells E. Relationship between Body Composition and Biochemical Parameters with Antioxidant Status in a Healthy Cohort of Postmenopausal Women. Metabolites 2022; 12:metabo12080746. [PMID: 36005618 PMCID: PMC9412505 DOI: 10.3390/metabo12080746] [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: 07/14/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 11/24/2022] Open
Abstract
An adequate prooxidant–antioxidant balance—which may be influenced by body composition and biochemical status—is essential to maintain human health, especially in circumstances under which the antioxidant defense decreases, such as menopause. The present study aimed to examine the relationship between body composition and biochemical parameters with antioxidant status in a healthy cohort of postmenopausal women. This cross-sectional study was carried out in a cohort of 78 postmenopausal women aged 44–76 years. The body composition profile was assessed through bioelectrical impedance. The determination of the total antioxidant capacity and superoxide dismutase activity was conducted by the colorimetric method, and glutathione peroxidase activity was determined by the enzymatic immunological method. The vitamin D levels were measured by ultra-performance liquid chromatography–tandem mass spectrometry. The mineral status was assessed through flame atomic absorption spectrophotometry. The rest of the biochemical parameters were assessed through an immunoassay. The total antioxidant capacity and antioxidant gap were negatively influenced by body composition (all p ≤ 0.049) and positively related to protein metabolism parameters (all p ≤ 0.048), whereas circulating levels of different micronutrients (all p ≤ 0.048) and enzymes (all p ≤ 0.047) appeared to play an important role in the glutathione peroxidase and superoxide dismutase activities. In conclusion, the menopause-related antioxidant status changes may be influenced by key body composition and biochemical profiles. To confirm this statement, further trials aiming to evaluate the body composition and biochemical intervention-induced changes upon antioxidant defense are needed.
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Affiliation(s)
- Héctor Vázquez-Lorente
- Institute of Nutrition and Food Technology “José Mataix”, University of Granada, 18071 Granada, Spain
| | - Lourdes Herrera-Quintana
- Institute of Nutrition and Food Technology “José Mataix”, University of Granada, 18071 Granada, Spain
- Correspondence: (L.H.-Q.); (J.M.-L.)
| | - Jorge Molina-López
- Faculty of Education, Psychology and Sports Sciences, University of Huelva, Avd. De las Fuerzas Armadas S/N, 21007 Huelva, Spain
- Correspondence: (L.H.-Q.); (J.M.-L.)
| | - Yenifer Gamarra-Morales
- Institute of Nutrition and Food Technology “José Mataix”, University of Granada, 18071 Granada, Spain
| | - Beatriz López-González
- Institute of Nutrition and Food Technology “José Mataix”, University of Granada, 18071 Granada, Spain
| | - Elena Planells
- Institute of Nutrition and Food Technology “José Mataix”, University of Granada, 18071 Granada, Spain
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Li X, Sun X, Li L, Luo Y, Chi Y, Zheng G. MDM2-mediated ubiquitination of LKB1 contributes to the development of diabetic cataract. Exp Cell Res 2022; 417:113191. [PMID: 35513074 DOI: 10.1016/j.yexcr.2022.113191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 04/17/2022] [Accepted: 04/29/2022] [Indexed: 11/04/2022]
Abstract
Diabetic cataract (DC) is a common complication of diabetes mellitus. The epithelial-mesenchymal transition (EMT) of lens epithelial cells (LECs) is a crucial event in the development of DC. Murine double minute 2 (MDM2) is an E3 ubiquitin ligase that promotes EMT by regulating diverse targets. However, little is known about how MDM2 is involved in the pathogenesis of DC. We found the mRNA and protein levels of MDM2 were up-regulated in the lens of DC patients and rats. Thus, high glucose (HG)-induced human lens epithelial cells (HLECs) were constructed for further investigation. The results showed that the level of MDM2 was increased in HG-cultured HLECs, and the MDM2 knockdown alleviated HG-induced abnormal migration, EMT, and oxidative stress damage. Moreover, co-immunoprecipitation and ubiquitination assays demonstrated that MDM2 down-regulated LKB1 expression by ubiquitination degradation. LKB1 was found to be lower expressed in human and rat DC lenses, and HG-stimulated HLECs. Also, LKB1 overexpression mitigated HG-induced dysfunction of HLECs. Finally, our data showed that the changes related to EMT and oxidative stress induced by MDM2 knockdown were restored by down-regulation of LKB1. Together, MDM2 may involve in the pathogenesis of DC through down-regulating LKB1. MDM2 might be an effective therapeutical target of DC.
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Affiliation(s)
- Xiao Li
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaowei Sun
- Department of Ophthalmology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - Li Li
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yao Luo
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yingjie Chi
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Guangying Zheng
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
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12
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Dong D, Wu J, Sheng L, Gong X, Zhang Z, Yu C. FUNDC1 induces apoptosis and autophagy under oxidative stress via PI3K/Akt/mTOR pathway in cataract lens cells. Curr Eye Res 2022; 47:547-554. [PMID: 35179404 DOI: 10.1080/02713683.2021.2021586] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE This purpose of the study is to explore the mRNA and protein expression of FUNDC1 in cataract cells and tissues, clarify the function and mechanism of FUNDC1 in cataract cells under oxidative stress. METHODS We used bioinformatic analysis to screen DEGs in cataract from GSE153933. The expression of FUNDC1 in cataract specimens and cells was measured by RT-qPCR and western blotting. MethPrimer was used to predict CpG island of FUNDC1 promoter. The methylation of FUNDC1 in cataract specimens and cells was determined by MSP assay. Flow cytometry assay was used to measure cell apoptosis in FUNDC1-knockdown and -overexpression SRA01/04 cells. The expression of LC3 was analyzed by immunofluorescence assay. The expression of apoptosis related proteins, autophagy and PI3K/Akt/mTOR related proteins was determined by western blotting. RESULTS The results of bioinformatic analysis revealed that FUNDC1 was upregulation in cataract. FUNDC1 was further high expression in SRA01/04 cells with H2O2 treatment whereas hypomethylation of FUNDC1 in cataract lens cells under oxidative stress. Knockdown of FUNDC1 decreased cell apoptosis and autophagy compared with negative control of SRA01/04 cells. While overexpression of FUNDC1 elevated cell apoptosis and autophagy compared to empty vector group in SRA01/04 cells. Mechanically, FUNDC1 reduced the phosphorylation of PI3K/Akt/mTOR pathway under oxidative stress in SRA01/04 cells. CONCLUSION Our study suggested that FUNDC1 deficiency restrains cell apoptosis and autophagy through inhibiting PI3K/Akt/mTOR signal pathway.
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Affiliation(s)
- Duo Dong
- Department of Ophthalmology, The Second Affiliated Hospital of Qiqihar Medical College, Qiqihar, Heilongjiang Province, 161000, China
| | - Jing Wu
- Department of Ophthalmology, The Second Affiliated Hospital of Qiqihar Medical College, Qiqihar, Heilongjiang Province, 161000, China
| | - Lijie Sheng
- Department of Ophthalmology, The Second Affiliated Hospital of Qiqihar Medical College, Qiqihar, Heilongjiang Province, 161000, China
| | - Xuewu Gong
- Department of Ophthalmology, The Second Affiliated Hospital of Qiqihar Medical College, Qiqihar, Heilongjiang Province, 161000, China
| | - Zhichang Zhang
- Department of Ophthalmology, The Second Affiliated Hospital of Qiqihar Medical College, Qiqihar, Heilongjiang Province, 161000, China
| | - Caihan Yu
- Department of Ophthalmology, Xianning Central Hospital, The first Affiliated Hospital of Hubei University of Science and Technology, Xianning, Hubei Province, 437100, China
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