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Elzehery R, El-Hafez HA, Elsehely I, Barakat A, Foda EAE, Hendawy SR, Gameil MA, Nada HS, El-Sebaie A. Association of the E23K (rs5219) polymorphism in the potassium channel (KCNJ11) gene with diabetic neuropathy in type 2 diabetes. Gene 2024; 921:148525. [PMID: 38703869 DOI: 10.1016/j.gene.2024.148525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 04/14/2024] [Accepted: 05/01/2024] [Indexed: 05/06/2024]
Affiliation(s)
- Rasha Elzehery
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Hala Abd El-Hafez
- Internal Medicine Department, Endocrinology Unit, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Ibrahim Elsehely
- Internal Medicine Department, Endocrinology Unit, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Amira Barakat
- Internal Medicine Department, Endocrinology Unit, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Engy Ahmed Ebrahim Foda
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Shimaa Rabea Hendawy
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Mohammed Ali Gameil
- Internal Medicine Department, Endocrinology Unit, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Hyam Sameh Nada
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
| | - Ahmed El-Sebaie
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Dakahlia, Egypt.
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Li DX, Yin LP, Song YQ, Shao NN, Zhu H, He CS, Sun JJ. KCNQ1 rs2237895 gene polymorphism increases susceptibility to type 2 diabetes mellitus in Asian populations. World J Diabetes 2024; 15:552-564. [PMID: 38591089 PMCID: PMC10999049 DOI: 10.4239/wjd.v15.i3.552] [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: 09/25/2023] [Revised: 12/13/2023] [Accepted: 02/02/2024] [Indexed: 03/15/2024] Open
Abstract
BACKGROUND The association of single nucleotide polymorphism of KCNQ1 gene rs2237895 with type 2 diabetes mellitus (T2DM) is currently controversial. It is unknown whether this association can be gene realized across different populations. AIM To determine the association of KCNQ1 rs2237895 with T2DM and provide reliable evidence for genetic susceptibility to T2DM. METHODS We searched PubMed, Embase, Web of Science, Cochrane Library, Medline, Baidu Academic, China National Knowledge Infrastructure, China Biomedical Liter-ature Database, and Wanfang to investigate the association between KCNQ1 gene rs2237895 and the risk of T2DM up to January 12, 2022. Review Manager 5.4 was used to analyze the association of the KCNQ1 gene rs2237895 polymorphism with T2DM and to evaluate the publication bias of the selected literature. RESULTS Twelve case-control studies (including 11273 cases and 11654 controls) met our inclusion criteria. In the full population, allelic model [odds ratio (OR): 1.19; 95% confidence interval (95%CI): 1.09-1.29; P < 0.0001], recessive model (OR: 1.20; 95%CI: 1.11-1.29; P < 0.0001), dominant model (OR: 1.27. 95%CI: 1.14-1.42; P < 0.0001), and codominant model (OR: 1.36; 95%CI: 1.15-1.60; P = 0.0003) (OR: 1.22; 95%CI: 1.10-1.36; P = 0.0002) indicated that the KCNQ1 gene rs2237895 polymorphism was significantly correlated with susceptibility to T2DM. In stratified analysis, this association was confirmed in Asian populations: allelic model (OR: 1.25; 95%CI: 1.13-1.37; P < 0.0001), recessive model (OR: 1.29; 95%CI: 1.11-1.49; P = 0.0007), dominant model (OR: 1.35; 95%CI: 1.20-1.52; P < 0.0001), codominant model (OR: 1.49; 95%CI: 1.22-1.81; P < 0.0001) (OR: 1.26; 95%CI: 1.16-1.36; P < 0.0001). In non-Asian populations, this association was not significant: Allelic model (OR: 1.06, 95%CI: 0.98-1.14; P = 0.12), recessive model (OR: 1.04; 95%CI: 0.75-1.42; P = 0.83), dominant model (OR: 1.06; 95%CI: 0.98-1.15; P = 0.15), codominant model (OR: 1.08; 95%CI: 0.82-1.42; P = 0.60. OR: 1.15; 95%CI: 0.95-1.39; P = 0.14). CONCLUSION KCNQ1 gene rs2237895 was significantly associated with susceptibility to T2DM in an Asian population. Carriers of the C allele had a higher risk of T2DM. This association was not significant in non-Asian populations.
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Affiliation(s)
- Dong-Xu Li
- First Clinical Medical College, Anhui Medical University, Hefei 230032, Anhui Province, China
| | - Li-Ping Yin
- School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei 230032, Anhui Province, China
| | - Yu-Qi Song
- First Clinical Medical College, Anhui Medical University, Hefei 230032, Anhui Province, China
| | - Nan-Nan Shao
- School of Clinical Medicine, Anhui Medical University, Hefei 230031, Anhui Province, China
| | - Huan Zhu
- First Clinical Medical College, Anhui Medical University, Hefei 230032, Anhui Province, China
| | - Chen-Sen He
- School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei 230032, Anhui Province, China
| | - Jiang-Jie Sun
- School of Health Care Management, Anhui Medical University, Hefei 230032, Anhui Province, China
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Jung SC, Zhou T, Ko EA. Age-dependent expression of ion channel genes in rat. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2023; 27:85-94. [PMID: 36575936 PMCID: PMC9806634 DOI: 10.4196/kjpp.2023.27.1.85] [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: 08/26/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 12/29/2022]
Abstract
Ion channels regulate a large number of cellular functions and their functional role in many diseases makes them potential therapeutic targets. Given their diverse distribution across multiple organs, the roles of ion channels, particularly in age-associated transcriptomic changes in specific organs, are yet to be fully revealed. Using RNA-seq data, we investigated the rat transcriptomic profiles of ion channel genes across 11 organs/tissues and 4 developmental stages in both sexes of Fischer 344 rats and identify tissue-specific and age-dependent changes in ion channel gene expression. Organ-enriched ion channel genes were identified. In particular, the brain showed higher tissue-specificity of ion channel genes, including Gabrd, Gabra6, Gabrg2, Grin2a, and Grin2b. Notably, age-dependent changes in ion channel gene expression were prominently observed in the thymus, including in Aqp1, Clcn4, Hvcn1, Itpr1, Kcng2, Kcnj11, Kcnn3, and Trpm2. Our comprehensive study of ion channel gene expression will serve as a primary resource for biological studies of aging-related diseases caused by abnormal ion channel functions.
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Affiliation(s)
- Sung-Cherl Jung
- Department of Physiology, School of Medicine, Jeju National University, Jeju 63243, Korea
| | - Tong Zhou
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557, USA
| | - Eun-A Ko
- Department of Physiology, School of Medicine, Jeju National University, Jeju 63243, Korea,Correspondence Eun-A Ko, E-mail:
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Moazzam-Jazi M, Najd-Hassan-Bonab L, Masjoudi S, Tohidi M, Hedayati M, Azizi F, Daneshpour MS. Risk of type 2 diabetes and KCNJ11 gene polymorphisms: a nested case-control study and meta-analysis. Sci Rep 2022; 12:20709. [PMID: 36456687 PMCID: PMC9715540 DOI: 10.1038/s41598-022-24931-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 11/22/2022] [Indexed: 12/05/2022] Open
Abstract
Due to the central role in insulin secretion, the potassium inwardly-rectifying channel subfamily J member 11 (KCNJ11) gene is one of the essential genes for type 2 diabetes (T2D) predisposition. However, the relevance of this gene to T2D development is not consistent among diverse populations. In the current study, we aim to capture the possible association of common KCNJ11 variants across Iranian adults, followed by a meta-analysis. We found that the tested variants of KCNJ11 have not contributed to T2D incidence in Iranian adults, consistent with similar insulin secretion levels among individuals with different genotypes. The integration of our results with 72 eligible published case-control studies (41,372 cases and 47,570 controls) as a meta-analysis demonstrated rs5219 and rs5215 are significantly associated with the increased T2D susceptibility under different genetic models. Nevertheless, the stratified analysis according to ethnicity showed rs5219 is involved in the T2D risk among disparate populations, including American, East Asian, European, and Greater Middle Eastern, but not South Asian. Additionally, the meta-regression analysis demonstrated that the sample size of both case and control groups was significantly associated with the magnitude of pooled genetic effect size. The present study can expand our knowledge about the KCNJ11 common variant's contributions to T2D incidence, which is valuable for designing SNP-based panels for potential clinical applications in precision medicine. It also highlights the importance of similar sample sizes for avoiding high heterogeneity and conducting a more precise meta-analysis.
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Affiliation(s)
- Maryam Moazzam-Jazi
- Cellular, and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Leila Najd-Hassan-Bonab
- Cellular, and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajedeh Masjoudi
- Cellular, and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Tohidi
- Prevention of Metabolic Disorder Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehdi Hedayati
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fereidoun Azizi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam S Daneshpour
- Cellular, and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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KCNJ11 and KCNQ1 Gene Polymorphisms and Placental Expression in Women with Gestational Diabetes Mellitus. Genes (Basel) 2022; 13:genes13081315. [PMID: 35893051 PMCID: PMC9331982 DOI: 10.3390/genes13081315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 11/17/2022] Open
Abstract
Gestational diabetes mellitus (GDM) represents carbohydrate intolerance in pregnant women. The pathogenesis of GDM is very complex, but abnormalities in insulin production and secretion underlie the disease. Potassium channels play an important role in insulin production and secretion. The family of potassium channels includes (among others) the potassium inwardly rectifying channel, subfamily J, member 11 (KCNJ11) and voltage-gated K+ channel (KCNQ1). The aim of the study was to examine the distribution of the KCNJ11 rs5219 and KCNQ1 rs151290 and rs2237892 gene polymorphisms in women with GDM and pregnant women with normal carbohydrate tolerance, to verify whether these polymorphisms are risk factors for GDM. This study included 204 Caucasian pregnant women with GDM and 207 pregnant women with normal glucose tolerance (NGT) from the West Pomeranian region of Poland. The diagnosis of GDM was based on a 75 g oral glucose tolerance test (OGTT) at 24–28 weeks gestation. There were no statistically significant differences in distribution of the KCNJ11 rs5219 and KCNQ1 rs151290 and rs2237892 gene polymorphisms between women with GDM and pregnant women with normal carbohydrate tolerance. Moreover, there were no statistically significant associations between the studied genotypes and the selected clinical parameters in women with GDM. The results of our study suggest that the KCNJ11 rs5219 and KCNQ1 rs2237892 and rs151290 gene polymorphisms are not significant risk factors associated with the development of GDM in our population. There were also no differences in the expression of KCNJ11 and KCNQ1 genes in the placenta of women with GDM and normal carbohydrate tolerance. However, an association between KCNJ11 gene expression in placenta and APGAR score in newborns was found.
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Alqadri N. Independent case-control study in KCNJ11 gene polymorphism with Type 2 diabetes Mellitus. Saudi J Biol Sci 2022; 29:2794-2799. [PMID: 35531169 PMCID: PMC9073069 DOI: 10.1016/j.sjbs.2022.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/31/2021] [Accepted: 01/02/2022] [Indexed: 01/01/2023] Open
Abstract
Background Type 2 Diabetes Mellitus (T2DM) is the most common form of diabetes in the aging population. This chronic metabolic disorder has discovered many candidate genes, and KCNJ11 was one of the genes associated with insulin secretion pathways mediated by potassium channels. There have been limited studies on the rs5210 polymorphism in T2DM patients, and none of them have been conducted in Saudi Arabia. Aim The aim of this study is to investigate at genotyping levels of rs5210 polymorphism in the KCNJ11 gene in older population with T2DM in the Saudi Population. Methods Based on the sample size design, this case-control study included 102 T2DM cases and 102 controls. Using the PCR-RFLP assay, 204 patients extracted DNA was genotyped for the rs5210 polymorphism. SPSS software was used for statistical analysis, including t-tests, HWE, genotyping, and multiple logistic regression analysis. Results The t-tests performed on T2DM cases and controls revealed a significant association in age, weight, BMI, FBG, Hb1Ac, SBP, DBP, HDLC, TC, and TG parameters (p < 0.05). HWE analysis found to be in consistent with rs5210 polymorphism. Allelic association was found in the rs5210 polymorphism (OR-1.64 [95 %CI: 1.08-2.49]; p = 0.01); however, no association (p > 0.05) was observed in the multivariate logistic regression assessment performed in this study. Conclusion These results indicate that the rs5210 polymorphism was primarily associated with allele frequencies, which could be attributable to the small sample size. Large sample size studies will be required to determine whether KCNJ11 gene polymorphisms may be required as a risk marker for T2DM in the Saudi population.
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Affiliation(s)
- Nada Alqadri
- Department of Biology, Turabah University College, Taif University, PO Box-11099, Taif 21944, Saudi Arabia
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Gibertoni D, Mammana L, Gherardi G, Baschieri E, Minora F, Santoro A. Presentation and outcome of chronic kidney disease in Italian and immigrant citizens: results from the Emilia-Romagna PIRP project. J Nephrol 2021; 35:179-190. [PMID: 33595822 DOI: 10.1007/s40620-021-00984-5] [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] [Accepted: 01/28/2021] [Indexed: 11/25/2022]
Abstract
INTRODUCTION In recent decades, high income countries (HIC) have been exposed to huge human migratory flows. Consistent with this influx, there has been a dramatic increase in the number of chronic kidney disease (CKD) patients in the immigrant population. In Italy, comparisons between Italian and immigrant CKD patients are still lacking, thus we aimed to describe the baseline clinical characteristics and the main outcomes of CKD patients who immigrated to Italy and reside in the Emilia Romagna region. METHODS This is a retrospective cohort study based on CKD patients from the Prevenzione Insufficienza Renale Progressiva (PIRP) project, which included 963 (3.1%) immigrants among the 30,702 patients seen by nephrologists between April 1st, 2004 and June 30th, 2020. We sub-divided the immigrants into seven groups based on their area of origin, and compared their baseline characteristics, CKD progression and time to end-stage kidney disease (ESKD) to those of Italian CKD patients. RESULTS At presentation, Italian subjects were on average older (73.1 years) and had less preserved kidney function (eGFR 34.3 ml/min), while South and East Asians had the highest proportion of diabetes and obesity (approximately 45% and 30%, respectively). At 4-year follow-up, about 20% of patients from South Asia, Eastern Europe and Arab Countries were diagnosed with ESKD, compared to only 11% of Italians and Latin Americans. CONCLUSIONS We found important differences between Italian and immigrant CKD patients, as well as among immigrant subgroups. First clinical encounters with nephrologists revealed that immigrants had varied patterns of clinical presentation and of nephropathy. During follow-up, immigrants showed faster kidney function decline which led to a higher risk of disease evolution and progression towards ESKD.
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Affiliation(s)
- Dino Gibertoni
- Department of Neuromotor and Biomedical Sciences, Unit of Hygiene and Public Health, University of Bologna, Bologna, Italy
| | - Leonardo Mammana
- Department of Primary Care, Bologna Healthcare Authority, Bologna, Italy
| | - Giulia Gherardi
- Specialty School of Hygiene and Preventive Medicine, University of Bologna, Bologna, Italy
| | - Erica Baschieri
- Specialty School of Hygiene and Preventive Medicine, University of Bologna, Bologna, Italy
| | - Francesco Minora
- Specialty School of Hygiene and Preventive Medicine, University of Bologna, Bologna, Italy
| | - Antonio Santoro
- Specialty School of Nephrology, University of Bologna, Via Albertoni 15, 40138, Bologna, Italy.
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