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Žukauskaitė G, Domarkienė I, Rančelis T, Kavaliauskienė I, Baronas K, Kučinskas V, Ambrozaitytė L. Putative protective genomic variation in the Lithuanian population. Genet Mol Biol 2024; 47:e20230030. [PMID: 38626572 PMCID: PMC11021042 DOI: 10.1590/1678-4685-gmb-2023-0030] [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: 02/03/2023] [Accepted: 01/01/2024] [Indexed: 04/18/2024] Open
Abstract
Genomic effect variants associated with survival and protection against complex diseases vary between populations due to microevolutionary processes. The aim of this study was to analyse diversity and distribution of effect variants in a context of potential positive selection. In total, 475 individuals of Lithuanian origin were genotyped using high-throughput scanning and/or sequencing technologies. Allele frequency analysis for the pre-selected effect variants was performed using the catalogue of single nucleotide polymorphisms. Comparison of the pre-selected effect variants with variants in primate species was carried out to ascertain which allele was derived and potentially of protective nature. Recent positive selection analysis was performed to verify this protective effect. Four variants having significantly different frequencies compared to European populations were identified while two other variants reached borderline significance. Effect variant in SLC30A8 gene may potentially protect against type 2 diabetes. The existing paradox of high rates of type 2 diabetes in the Lithuanian population and the relatively high frequencies of potentially protective genome variants against it indicate a lack of knowledge about the interactions between environmental factors, regulatory regions, and other genome variation. Identification of effect variants is a step towards better understanding of the microevolutionary processes, etiopathogenetic mechanisms, and personalised medicine.
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Affiliation(s)
- Gabrielė Žukauskaitė
- Vilnius University, Faculty of Medicine, Institute of Biomedical Sciences, Department of Human and Medical Genetics, Vilnius, Lithuania
| | - Ingrida Domarkienė
- Vilnius University, Faculty of Medicine, Institute of Biomedical Sciences, Department of Human and Medical Genetics, Vilnius, Lithuania
| | - Tautvydas Rančelis
- Vilnius University, Faculty of Medicine, Institute of Biomedical Sciences, Department of Human and Medical Genetics, Vilnius, Lithuania
| | - Ingrida Kavaliauskienė
- Vilnius University, Faculty of Medicine, Institute of Biomedical Sciences, Department of Human and Medical Genetics, Vilnius, Lithuania
| | - Karolis Baronas
- Vilnius University, Faculty of Medicine, Institute of Biomedical Sciences, Department of Human and Medical Genetics, Vilnius, Lithuania
| | - Vaidutis Kučinskas
- Vilnius University, Faculty of Medicine, Institute of Biomedical Sciences, Department of Human and Medical Genetics, Vilnius, Lithuania
| | - Laima Ambrozaitytė
- Vilnius University, Faculty of Medicine, Institute of Biomedical Sciences, Department of Human and Medical Genetics, Vilnius, Lithuania
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2
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Cheng YF, Yang CY, Tsai MC. Shared Genetics between Age at Menarche and Type 2 Diabetes Mellitus: Genome-Wide Genetic Correlation Study. Biomedicines 2024; 12:157. [PMID: 38255262 PMCID: PMC10813301 DOI: 10.3390/biomedicines12010157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/07/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Background: Age at menarche (AAM) has been associated with type 2 diabetes mellitus (T2DM). However, little is known about their shared heritability. Methods: Our data comes from the Taiwan Biobank. Genome-wide association studies (GWASs) were conducted to identify single-nucleotide polymorphisms (SNPs) related to AAM-, T2DM-, and T2DM-related phenotypes, such as body fat percentage (BFP), fasting blood glucose (FBG), and hemoglobin A1C (HbA1C). Further, the conditional false discovery rate (cFDR) method was applied to examine the shared genetic signals. Results: Conditioning on AAM, Quantile-quantile plots showed an earlier departure from the diagonal line among SNPs associated with BFP and FBG, indicating pleiotropic enrichments among AAM and these traits. Further, the cFDR analysis found 39 independent pleiotropic loci that may underlie the AAM-T2DM association. Among them, FN3KRP rs1046896 (cFDR = 6.84 × 10-49), CDKAL1 rs2206734 (cFDR = 6.48 × 10-10), B3GNTL1 rs58431774 (cFDR = 2.95 × 10-10), G6PC2 rs1402837 (cFDR = 1.82 × 10-8), and KCNQ1 rs60808706 (cFDR = 9.49 × 10-8) were highlighted for their significant genetic enrichment. The protein-protein interaction analysis revealed a significantly enriched network among novel discovered genes that were mostly found to be involved in the insulin and glucagon signaling pathways. Conclusions: Our study highlights potential pleiotropic effects across AAM and T2DM. This may shed light on identifying the genetic causes of T2DM.
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Affiliation(s)
- Yuan-Fang Cheng
- School of Medicine, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
| | - Cheng-Yi Yang
- Department of Statistics, College of Management, National Cheng Kung University, Tainan 70101, Taiwan
| | - Meng-Che Tsai
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Shengli Road, Tainan 70403, Taiwan
- Department of Genomic Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
- Department of Medical Humanities and Social Medicine, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
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3
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Kulin A, Kucsma N, Bohár B, Literáti-Nagy B, Korányi L, Cserepes J, Somogyi A, Sarkadi B, Szabó E, Várady G. Genetic Modulation of the GLUT1 Transporter Expression-Potential Relevance in Complex Diseases. BIOLOGY 2022; 11:1669. [PMID: 36421383 PMCID: PMC9687623 DOI: 10.3390/biology11111669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 12/01/2023]
Abstract
The human GLUT1 (SLC2A1) membrane protein is the key glucose transporter in numerous cell types, including red cells, kidney, and blood-brain barrier cells. The expression level of this protein has a role in several diseases, including cancer and Alzheimer's disease. In this work, to investigate a potential genetic modulation of the GLUT1 expression level, the protein level was measured in red cell membranes by flow cytometry, and the genetic background was analyzed by qPCR and luciferase assays. We found significant associations between red cell GLUT1 levels and four single nucleotide polymorphisms (SNP) in the coding SLC2A1 gene, that in individuals with the minor alleles of rs841848, rs1385129, and rs11537641 had increased, while those having the variant rs841847 had decreased erythrocyte GLUT1 levels. In the luciferase reporter studies performed in HEK-293T and HepG2 cells, a similar SNP-dependent modulation was observed, and lower glucose, serum, and hypoxic condition had variable, cell- and SNP-specific effects on luciferase expression. These results should contribute to a more detailed understanding of the genetic background of membrane GLUT1 expression and its potential role in associated diseases.
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Affiliation(s)
- Anna Kulin
- Doctoral School of Molecular Medicine, Semmelweis University, 1085 Budapest, Hungary
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Nóra Kucsma
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Balázs Bohár
- Doctoral School of Biology, Eötvös Loránd University, 1117 Budapest, Hungary
| | | | | | | | - Anikó Somogyi
- 2nd Department of Internal Medicine, Semmelweis University, 1088 Budapest, Hungary
| | - Balázs Sarkadi
- Doctoral School of Molecular Medicine, Semmelweis University, 1085 Budapest, Hungary
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Edit Szabó
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - György Várady
- Doctoral School of Molecular Medicine, Semmelweis University, 1085 Budapest, Hungary
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
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4
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Lopez-Pineda A, Vernekar M, Moreno-Grau S, Rojas-Muñoz A, Moatamed B, Lee MTM, Nava-Aguilar MA, Gonzalez-Arroyo G, Numakura K, Matsuda Y, Ioannidis A, Katsanis N, Takano T, Bustamante CD. Validating and automating learning of cardiometabolic polygenic risk scores from direct-to-consumer genetic and phenotypic data: implications for scaling precision health research. Hum Genomics 2022; 16:37. [PMID: 36076307 PMCID: PMC9452874 DOI: 10.1186/s40246-022-00406-y] [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: 03/08/2022] [Accepted: 08/06/2022] [Indexed: 11/29/2022] Open
Abstract
Introduction A major challenge to enabling precision health at a global scale is the bias between those who enroll in state sponsored genomic research and those suffering from chronic disease. More than 30 million people have been genotyped by direct-to-consumer (DTC) companies such as 23andMe, Ancestry DNA, and MyHeritage, providing a potential mechanism for democratizing access to medical interventions and thus catalyzing improvements in patient outcomes as the cost of data acquisition drops. However, much of these data are sequestered in the initial provider network, without the ability for the scientific community to either access or validate. Here, we present a novel geno-pheno platform that integrates heterogeneous data sources and applies learnings to common chronic disease conditions including Type 2 diabetes (T2D) and hypertension.
Methods We collected genotyped data from a novel DTC platform where participants upload their genotype data files and were invited to answer general health questionnaires regarding cardiometabolic traits over a period of 6 months. Quality control, imputation, and genome-wide association studies were performed on this dataset, and polygenic risk scores were built in a case–control setting using the BASIL algorithm.
Results We collected data on N = 4,550 (389 cases / 4,161 controls) who reported being affected or previously affected for T2D and N = 4,528 (1,027 cases / 3,501 controls) for hypertension. We identified 164 out of 272 variants showing identical effect direction to previously reported genome-significant findings in Europeans. Performance metric of the PRS models was AUC = 0.68, which is comparable to previously published PRS models obtained with larger datasets including clinical biomarkers. Discussion DTC platforms have the potential of inverting research models of genome sequencing and phenotypic data acquisition. Quality control (QC) mechanisms proved to successfully enable traditional GWAS and PRS analyses. The direct participation of individuals has shown the potential to generate rich datasets enabling the creation of PRS cardiometabolic models. More importantly, federated learning of PRS from reuse of DTC data provides a mechanism for scaling precision health care delivery beyond the small number of countries who can afford to finance these efforts directly.
Conclusions The genetics of T2D and hypertension have been studied extensively in controlled datasets, and various polygenic risk scores (PRS) have been developed. We developed predictive tools for both phenotypes trained with heterogeneous genotypic and phenotypic data generated outside of the clinical environment and show that our methods can recapitulate prior findings with fidelity. From these observations, we conclude that it is possible to leverage DTC genetic repositories to identify individuals at risk of debilitating diseases based on their unique genetic landscape so that informed, timely clinical interventions can be incorporated.
Supplementary Information The online version contains supplementary material available at 10.1186/s40246-022-00406-y.
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Affiliation(s)
- Arturo Lopez-Pineda
- Galatea Bio, Inc., 975 W 22nd Street, Hialeah, Florida, 33010, USA.,Amphora Health, Batallon Independencia 80, Morelia, Michoacan, 58260, Mexico
| | - Manvi Vernekar
- Genomelink, Inc., 2150 Shattuck Avenue, Berkeley, California, 94704, USA.,Awakens Japan K.K., 2-11-3 Meguro, Meguro-ku, Tokyo, 1530063, Japan
| | | | | | - Babak Moatamed
- Galatea Bio, Inc., 975 W 22nd Street, Hialeah, Florida, 33010, USA
| | | | - Marco A Nava-Aguilar
- Galatea Bio, Inc., 975 W 22nd Street, Hialeah, Florida, 33010, USA.,Amphora Health, Batallon Independencia 80, Morelia, Michoacan, 58260, Mexico
| | - Gilberto Gonzalez-Arroyo
- Galatea Bio, Inc., 975 W 22nd Street, Hialeah, Florida, 33010, USA.,Amphora Health, Batallon Independencia 80, Morelia, Michoacan, 58260, Mexico
| | - Kensuke Numakura
- Genomelink, Inc., 2150 Shattuck Avenue, Berkeley, California, 94704, USA.,Awakens Japan K.K., 2-11-3 Meguro, Meguro-ku, Tokyo, 1530063, Japan
| | - Yuta Matsuda
- Genomelink, Inc., 2150 Shattuck Avenue, Berkeley, California, 94704, USA.,Awakens Japan K.K., 2-11-3 Meguro, Meguro-ku, Tokyo, 1530063, Japan
| | - Alexander Ioannidis
- Galatea Bio, Inc., 975 W 22nd Street, Hialeah, Florida, 33010, USA.,Department of Biomedical Data Science, Stanford University School of Medicine, 1265 Welch Road, Stanford, California, 94305, USA
| | | | - Tomohiro Takano
- Genomelink, Inc., 2150 Shattuck Avenue, Berkeley, California, 94704, USA. .,Awakens Japan K.K., 2-11-3 Meguro, Meguro-ku, Tokyo, 1530063, Japan.
| | - Carlos D Bustamante
- Galatea Bio, Inc., 975 W 22nd Street, Hialeah, Florida, 33010, USA. .,Department of Biomedical Data Science, Stanford University School of Medicine, 1265 Welch Road, Stanford, California, 94305, USA. .,Chan Zuckerberg Biohub, 499 Illinois Street, San Francisco, California, 94158, USA.
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5
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Examining Barriers and Opportunities of Conducting Genome-Wide Association Studies in Developing Countries. CURR EPIDEMIOL REP 2022. [DOI: 10.1007/s40471-022-00303-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Cheung JTK, Lau E, Tsui CCT, Siu ELN, Tse NKW, Hui NYL, Ma RCW, Kong APS, Fu A, Lau V, Jia W, Sheu WHH, Sobrepena L, Yoon KH, Tan ATB, Chia YC, Sosale A, Saboo BD, Kesavadev J, Goh SY, Nguyen TK, Thewjitcharoen Y, Suwita R, Luk AOY, Yang A, Chow E, Lim LL, Chan JCN. Combined associations of family history and self-management with age at diagnosis and cardiometabolic risk in 86,931 patients with type 2 diabetes: Joint Asia Diabetes Evaluation (JADE) Register from 11 countries. BMC Med 2022; 20:249. [PMID: 35831899 PMCID: PMC9281062 DOI: 10.1186/s12916-022-02424-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 05/31/2022] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Family history (FamH) of type 2 diabetes might indicate shared genotypes, environments, and/or behaviors. We hypothesize that FamH interacts with unhealthy behaviors to increase the risk of early onset of diabetes and poor cardiometabolic control. METHODS In a cross-sectional analysis of the prospective Joint Asia Diabetes Evaluation Register including patients from 427 clinics in 11 Asian countries/regions in 2007-2021, we defined positive FamH as affected parents/siblings and self-management as (1) healthy lifestyles (balanced diet, non-use of alcohol and tobacco, regular physical activity) and (2) regular self-monitoring of blood glucose (SMBG). RESULTS Among 86,931 patients with type 2 diabetes (mean±SD age: 56.6±11.6 years; age at diagnosis of diabetes: 49.8±10.5 years), the prevalence of FamH ranged from 39.1% to 85.3% in different areas with FamH affecting mother being most common (32.5%). The FamH group (n=51,705; 59.5%) was diagnosed 4.6 years earlier than the non-FamH group [mean (95% CI): 47.9 (47.8-48.0) vs. 52.5 (52.4-52.6), logrank p<0.001]. In the FamH group, patients with both parents affected had the earliest age at diagnosis [44.6 (44.5-44.8)], followed by affected single parent [47.7 (47.6-47.8)] and affected siblings only [51.5 (51.3-51.7), logrank p<0.001]. The FamH plus ≥2 healthy lifestyle group had similar age at diagnosis [48.2 (48.1-48.3)] as the non-FamH plus <2 healthy lifestyle group [50.1 (49.8-50.5)]. The FamH group with affected parents had higher odds of hyperglycemia, hypertension, and dyslipidemia than the FamH group with affected siblings, with the lowest odds in the non-FamH group. Self-management (healthy lifestyles plus SMBG) was associated with higher odds of attaining HbA1c<7%, blood pressure<130/80mmHg, and LDL-C<2.6 mmol/L especially in the FamH group (FamH×self-management, pinteraction=0.050-0.001). CONCLUSIONS In Asia, FamH was common and associated with young age of diagnosis which might be delayed by healthy lifestyle while self management was associated with better control of cardiometabolic risk factors especially in those with FamH.
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Affiliation(s)
- Johnny T K Cheung
- Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region, China
| | - Eric Lau
- Asia Diabetes Foundation, Shatin, Hong Kong Special Administrative Region, Shatin, China.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China
| | - Cyrus C T Tsui
- Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region, China
| | - Edmond L N Siu
- Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region, China
| | - Naomi K W Tse
- Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region, China
| | - Nicole Y L Hui
- Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region, China
| | - Ronald C W Ma
- Asia Diabetes Foundation, Shatin, Hong Kong Special Administrative Region, Shatin, China.,Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China.,Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China
| | - Alice P S Kong
- Asia Diabetes Foundation, Shatin, Hong Kong Special Administrative Region, Shatin, China.,Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China.,Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China
| | - Amy Fu
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China
| | - Vanessa Lau
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China
| | - Weiping Jia
- Shanghai Sixth People's Hospital, Shanghai, China
| | - Wayne H H Sheu
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | | | - K H Yoon
- Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Alexander T B Tan
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Yook-Chin Chia
- Department of Medical Sciences, School of Medical and Life Sciences, Sunway University, Subang Jaya, Selangor, Malaysia.,Department of Primary Care Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Banshi D Saboo
- Dia Care - Diabetes Care & Hormone Clinic, Ahmedabad, Gujarat, India
| | - Jothydev Kesavadev
- Jothydev's Diabetes & Research Center, Thiruvananthapuram, Kerala, India
| | - Su-Yen Goh
- Department of Endocrinology, Singapore General Hospital, Singapore, Singapore
| | | | | | - Raymond Suwita
- Cerebrocardiovascular Diabetes Group Clinic (CDG), Jakarta, Indonesia
| | - Andrea O Y Luk
- Asia Diabetes Foundation, Shatin, Hong Kong Special Administrative Region, Shatin, China.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China.,Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China
| | - Aimin Yang
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China.,Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China
| | - Elaine Chow
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China.,Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China
| | - Lee Ling Lim
- Asia Diabetes Foundation, Shatin, Hong Kong Special Administrative Region, Shatin, China.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China.,Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Juliana C N Chan
- Asia Diabetes Foundation, Shatin, Hong Kong Special Administrative Region, Shatin, China. .,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China. .,Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China. .,Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong Special Administrative Region, China.
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Hormonal and metabolic profiles of obese and nonobese type 2 diabetes patients: implications of plasma insulin, ghrelin, and vitamin D levels. Cardiovasc Endocrinol Metab 2022; 11:e0256. [PMID: 35098041 PMCID: PMC8789207 DOI: 10.1097/xce.0000000000000256] [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: 07/20/2021] [Accepted: 10/26/2021] [Indexed: 12/25/2022]
Abstract
Type 2 diabetes (T2D) is associated with obesity whereas loss of weight is a feature of the disease; however, the two states are not mutually exclusive. Obesity is linked with changes in hormonal activity and overall body metabolism.
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8
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Zhang Y, Zhou X, Dai W, Sun J, Lin M, Zhang Y, Ding Y. CTNNA3 genetic polymorphism may be a new genetic signal of type 2 diabetes in the Chinese Han population: a case control study. BMC Med Genomics 2021; 14:257. [PMID: 34717601 PMCID: PMC8556947 DOI: 10.1186/s12920-021-01105-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 10/11/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Type 2 Diabetes (T2D) is the result of a combination of genes and environment. The identified genetic loci can only explain part of T2D risk. Our study is aimed to explore the association between CTNNA3 single nucleotide polymorphisms (SNPs) and T2D risk. METHODS We conducted a 'case-control' study among 1002 Chinese Han participants. Four candidate SNPs of CTNNA3 were selected (rs10822745 C/T, rs7920624 A/T, rs2441727 A/G, rs7914287 A/G), and logistic regression analysis was used to evaluate the association between candidate SNPs and T2D risk. We used single factor analysis of variance to analyze the differences of clinical characteristics among different genotypes. In this study, haplotype analysis was conducted by plink1.07 and Haploview software and linkage disequilibrium (LD) was calculated. The interaction of candidate SNPs in T2D risk was evaluated by multi-factor dimensionality reduction (MDR). Finally, we conducted a false-positive report probability (FPRP) analysis to detect whether the significant findings were just chance or noteworthy observations. RESULTS The results showed that CTNNA3-rs7914287 was a risk factor for T2D ('T': OR = 1.33, p = 0.003; 'TT': OR = 2.21, p = 0.001; 'TT' (recessive): OR = 2.09, p = 0.001; Log-additive: OR = 1.34, p = 0.003). The results of subgroup analysis showed that rs7914287 was significantly associated with the increased risk of T2D among participants who were older than 60 years, males, smoking, drinking, or BMI > 24. We also found that rs2441727 was associated with reducing the T2D risk among participants who were older than 60 years, smoking, or drinking. In addition, rs7914287 was associated with T2D patients with no retinal degeneration; rs10822745 and rs7920624 were associated with the course of T2D patients. High density lipoprotein levels had significant differences under different genotypes of rs10822745. Under the different genotypes of rs7914287, the levels of aspartate aminotransferase, alanine aminotransferase and gamma-glutamyltransferase were also significantly different. CONCLUSION We found that CTNNA3 genetic polymorphisms can be used as a new genetic signal of T2D risk in Chinese Han population. Especially, CTNNA3-rs7914287 showed an outstanding and significant association with T2D risk in both overall analysis and subgroup analysis.
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Affiliation(s)
- Yunjun Zhang
- Department of General Practice, Hainan General Hospital, #19, Xiuhua Road, Xiuying District, Haikou, 570311, Hainan, People's Republic of China
| | - Xiaoman Zhou
- Department of General Practice, Hainan General Hospital, #19, Xiuhua Road, Xiuying District, Haikou, 570311, Hainan, People's Republic of China
| | - Wanjuan Dai
- Health Center, Hainan General Hospital, Haikou, 570311, Hainan, People's Republic of China
| | - Juan Sun
- Department of General Practice, Hainan General Hospital, #19, Xiuhua Road, Xiuying District, Haikou, 570311, Hainan, People's Republic of China
| | - Mei Lin
- Department of General Practice, Hainan General Hospital, #19, Xiuhua Road, Xiuying District, Haikou, 570311, Hainan, People's Republic of China
| | - Yutian Zhang
- Department of General Practice, Hainan General Hospital, #19, Xiuhua Road, Xiuying District, Haikou, 570311, Hainan, People's Republic of China
| | - Yipeng Ding
- Department of General Practice, Hainan General Hospital, #19, Xiuhua Road, Xiuying District, Haikou, 570311, Hainan, People's Republic of China.
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Liu J, Wu S, Cheng Y, Liu Q, Su L, Yang Y, Zhang X, Wu M, Choi JI, Tong H. Sargassum fusiforme Alginate Relieves Hyperglycemia and Modulates Intestinal Microbiota and Metabolites in Type 2 Diabetic Mice. Nutrients 2021; 13:2887. [PMID: 34445047 PMCID: PMC8398017 DOI: 10.3390/nu13082887] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/17/2021] [Accepted: 08/19/2021] [Indexed: 12/15/2022] Open
Abstract
Sargassum fusiforme alginate (SF-Alg) possess many pharmacological activities, including hypoglycemic and hypolipidemic. However, the hypoglycemic mechanisms of SF-Alg remain unclear due to its low bioavailability. In this study, we evaluated the therapeutic effect of SF-Alg on high-fat diet (HFD)/streptozotocin (STZ)-induced type 2 diabetes (T2D) mice. SF-Alg intervention was found to significantly reduce fasting blood glucose (FBG), triglycerides (TG), and total cholesterol (TC), while increasing high-density lipoprotein cholesterol (HDL-c) and improving glucose tolerance. In addition, administrating SF-Alg to diabetic mice moderately attenuated pathological changes in adipose, hepatic, and heart tissues as well as skeletal muscle, and diminished oxidative stress. To probe the underlying mechanisms, we further analyzed the gut microbiota using 16S rRNA amplicon sequencing, as well as metabolites by non-targeted metabolomics. Here, SF-Alg significantly increased some benign bacteria (Lactobacillus, Bacteroides, Akkermansia Alloprevotella, Weissella and Enterorhabdus), and significantly decreased harmful bacteria (Turicibacter and Helicobacter). Meanwhile, SF-Alg dramatically decreased branched-chain amino acids (BCAAs) and aromatic amino acids (AAAs) in the colon of T2D mice, suggesting a positive benefit of SF-Alg as an adjvant agent for T2D.
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Affiliation(s)
- Jian Liu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; (J.L.); (S.W.); (Y.C.); (L.S.); (Y.Y.); (X.Z.); (M.W.)
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju 500-757, Korea
| | - Siya Wu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; (J.L.); (S.W.); (Y.C.); (L.S.); (Y.Y.); (X.Z.); (M.W.)
| | - Yang Cheng
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; (J.L.); (S.W.); (Y.C.); (L.S.); (Y.Y.); (X.Z.); (M.W.)
| | - Qiuhui Liu
- Bestchrom (Shanghai) Biosciences Co., Ltd., Shanghai 200120, China;
| | - Laijin Su
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; (J.L.); (S.W.); (Y.C.); (L.S.); (Y.Y.); (X.Z.); (M.W.)
| | - Yue Yang
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; (J.L.); (S.W.); (Y.C.); (L.S.); (Y.Y.); (X.Z.); (M.W.)
| | - Xu Zhang
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; (J.L.); (S.W.); (Y.C.); (L.S.); (Y.Y.); (X.Z.); (M.W.)
| | - Mingjiang Wu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; (J.L.); (S.W.); (Y.C.); (L.S.); (Y.Y.); (X.Z.); (M.W.)
| | - Jong-il Choi
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju 500-757, Korea
| | - Haibin Tong
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China; (J.L.); (S.W.); (Y.C.); (L.S.); (Y.Y.); (X.Z.); (M.W.)
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10
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Bejar CA, Goyal S, Afzal S, Mangino M, Zhou A, van der Most PJ, Bao Y, Gupta V, Smart MC, Walia GK, Verweij N, Power C, Prabhakaran D, Singh JR, Mehra NK, Wander GS, Ralhan S, Kinra S, Kumari M, de Borst MH, Hyppönen E, Spector TD, Nordestgaard BG, Blackett PR, Sanghera DK. A Bidirectional Mendelian Randomization Study to evaluate the causal role of reduced blood vitamin D levels with type 2 diabetes risk in South Asians and Europeans. Nutr J 2021; 20:71. [PMID: 34315477 PMCID: PMC8314596 DOI: 10.1186/s12937-021-00725-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 06/28/2021] [Indexed: 12/24/2022] Open
Abstract
Context Multiple observational studies have reported an
inverse relationship between 25-hydroxyvitamin
D concentrations (25(OH)D) and type 2 diabetes (T2D). However, the results of
short- and long-term interventional trials concerning the relationship between 25(OH)D and T2D risk have been
inconsistent. Objectives and methods To evaluate the causal role of reduced blood
25(OH)D in T2D, here we have performed a bidirectional Mendelian randomization
study using 59,890 individuals (5,862 T2D cases and 54,028 controls) from
European and Asian Indian ancestries. We used six known SNPs, including three
T2D SNPs and three vitamin D pathway SNPs, as a genetic instrument to evaluate
the causality and direction of the association between T2D and circulating
25(OH)D concentration. Results Results of the combined meta-analysis of eight
participating studies showed that a composite score of three T2D SNPs would
significantly increase T2D risk by an odds ratio (OR) of 1.24, p = 1.82 × 10–32; Z score 11.86, which, however, had
no significant association with 25(OH)D status (Beta -0.02nmol/L ± SE
0.01nmol/L; p = 0.83; Z score -0.21). Likewise, the genetically
instrumented composite score of 25(OH)D lowering alleles significantly
decreased 25(OH)D concentrations (-2.1nmol/L ± SE 0.1nmol/L,
p = 7.92 × 10–78; Z score -18.68) but was not
associated with increased risk for T2D (OR 1.00, p = 0.12;
Z score 1.54). However, using 25(OH)D synthesis SNP (DHCR7; rs12785878) as an
individual genetic instrument, a per allele reduction of 25(OH)D concentration
(-4.2nmol/L ± SE 0.3nmol/L)
was predicted to increase T2D risk by 5%, p = 0.004;
Z score 2.84. This effect, however, was not seen in other 25(OH)D SNPs (GC
rs2282679, CYP2R1 rs12794714) when used as an individual instrument. Conclusion Our new data on this bidirectional Mendelian
randomization study suggests that genetically instrumented T2D risk does not
cause changes in 25(OH)D levels. However, genetically regulated 25(OH)D
deficiency due to vitamin D synthesis gene (DHCR7) may influence the risk of
T2D. Supplementary Information The online version contains supplementary material available at 10.1186/s12937-021-00725-1.
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Affiliation(s)
- Cynthia A Bejar
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Rm 317 BMSB, OK, 73104, OK City, USA
| | - Shiwali Goyal
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Rm 317 BMSB, OK, 73104, OK City, USA
| | - Shoaib Afzal
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Massimo Mangino
- Department of Twin Research and Genetic Epidemiology, Kings College London, London, SE1 7EH, UK.,NIHR Biomedical Research Centre at Guy's and St Thomas' Foundation Trust, SE1 9RT, London, UK
| | - Ang Zhou
- Australian Center for Precision Health, University of South Australia Cancer Research Institute, Adelaide, Australia
| | - Peter J van der Most
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, NL, The Netherlands
| | - Yanchun Bao
- Department of Mathematical Sciences, University of Essex, Colchester, UK
| | - Vipin Gupta
- Department of Anthropology, University of Delhi, New Delhi, India
| | - Melissa C Smart
- Department of Mathematical Sciences, University of Essex, Colchester, UK
| | | | - Niek Verweij
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Christine Power
- Population, Policy and Practice, Institute of Child Health, University College London, London, WC1N 1EH, UK
| | | | - Jai Rup Singh
- Department of Human Genetics, Central University of Punjab, Bathinda, Punjab, India
| | - Narinder K Mehra
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences and Research, New Delhi, India
| | | | - Sarju Ralhan
- Department of Cardiology, Hero DMC Heart Institute, Ludhiana, India
| | - Sanjay Kinra
- Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - Meena Kumari
- Department of Mathematical Sciences, University of Essex, Colchester, UK
| | - Martin H de Borst
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Elina Hyppönen
- Australian Center for Precision Health, University of South Australia Cancer Research Institute, Adelaide, Australia.,Population, Policy and Practice, Institute of Child Health, University College London, London, WC1N 1EH, UK.,Australian Centre for Precision Health, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, Kings College London, London, SE1 7EH, UK
| | - Børge G Nordestgaard
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Piers R Blackett
- Department of Pediatrics, Section of Pediatric Endocrinology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.,Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Dharambir K Sanghera
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Rm 317 BMSB, OK, 73104, OK City, USA. .,Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA. .,Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA. .,Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA. .,Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
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11
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Sarray S, Dallel M, Lamine LB, Jairajpuri D, Sellami N, Turki A, Malalla Z, Brock R, Ghorbel M, Mahjoub T. Association of matrix metalloproteinase-2 gene polymorphisms with susceptibility to type 2 diabetes: A case control study. J Diabetes Complications 2021; 35:107908. [PMID: 33766491 DOI: 10.1016/j.jdiacomp.2021.107908] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/02/2021] [Accepted: 03/08/2021] [Indexed: 11/16/2022]
Abstract
AIMS Genetic variations mediating MMP-2 expression may result in individual differences in susceptibility to particular diseases. Our aim was to investigate the possible association of certain MMP-2 gene variants with the susceptibility of type 2 diabetes (T2D) in a Tunisian population. SUBJECTS AND METHODS A retrospective case-control study involving 310 normoglycemic control subjects and 791 T2D patients was conducted. Genotyping of MMP-2 variants was performed by real time PCR. RESULTS Minor allele frequencies (MAF) of the rs243865 and the rs243866 MMP-2, were significantly different between T2D cases and controls. Setting homozygous wild-type genotype carrier as reference, a reduced risk of T2D was seen with the rs243865 and the rs243866 genotypes. Haploview analysis revealed limited linkage disequilibrium between the tested MMP-2 and variants, with most haplotypes (99.5%) captured by 7 MMP-2 haplotypes. Taking the GCCC haplotype as reference for MMP-2 (OR = 1.00), a reduced frequency of TTCC haplotypes (P = 0.04) and the GTCC haplotype (P = 3.5 · 10-5) was noted in T2D which indicates a protective nature of these two haplotypes for T2D development. CONCLUSION To the best of our knowledge, the present study is the first to demonstrate a consistent association of the rs243865 and rs243866 genotype with a protection for T2D.
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Affiliation(s)
- Sameh Sarray
- Department of Medical Biochemistry, Arabian Gulf University, Manama, Bahrain; Faculty of Sciences, University Tunis EL Manar, 2092 Manar II, Tunisia.
| | - Meriem Dallel
- Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy of Monastir, University of Monastir, Tunisia
| | - Laila Ben Lamine
- Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy of Monastir, University of Monastir, Tunisia
| | - Deeba Jairajpuri
- Department of Medical Biochemistry, Arabian Gulf University, Manama, Bahrain
| | - Nejla Sellami
- Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy of Monastir, University of Monastir, Tunisia
| | - Amira Turki
- Faculty of Applied Medical Sciences, Northern Borders University, Arar, Saudi Arabia
| | - Zainab Malalla
- Department of Medical Biochemistry, Arabian Gulf University, Manama, Bahrain
| | - Roland Brock
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, University Medical Center, Nijmegen, the Netherlands
| | - Mohamed Ghorbel
- Department of Ophthalmology, CHU Farhat Hached, Sousse, Tunisia
| | - Touhami Mahjoub
- Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy of Monastir, University of Monastir, Tunisia
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12
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Nazer S, Andleeb S, Ali S, Gulzar N, Raza A, Khan H, Akhtar K, Ahmed MN. Cytotoxicity, Anti-diabetic, and hepato-protective potential of Ajuga bracteosa-conjugated silver nanoparticles in Balb/c mice. Curr Pharm Biotechnol 2021; 23:318-336. [PMID: 33882804 DOI: 10.2174/1389201022666210421101837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Ajuga bracteosa is a traditional herb used against various diseases. OBJECTIVE Current research aimed to investigate the anti-diabetic and hepato-protective effect of green synthesized silver nanoparticles (ABAgNPs) using Ajuga bracteosa aqueous extract (ABaqu). METHODS In vitro anti-diabetic and cytotoxic effects were carried out via α- glucosidase inhibition, brine shrimp lethality, and protein kinase inhibition assays. For in vivo screening of 200 mg/kg and 400 mg/kg of both ABAgNPs and ABaqu in alloxan-induced and CCl4-induced Swiss albino mice were used. Liver and kidney functional markers, hematology, and histopathological studies were carried out after 14 days of administration. RESULTS In vivo antidiabetic and anti-cancerous effects showed valuable anti-hyperglycemic and hepato-protective potential when mice were treated with ABaqu and ABAgNPs. A significant reduction in the blood glucose level was recorded when ABaqu and ABAgNPs were administrated orally compared to Glibenclamide treated group. Significant reduction in ALT, AST, ALP, urea, uric acid, and creatinine was recorded in ABaqu and ABAgNPs treated diabetic mice. The hepato-protective findings indicated that ALT, ALP, AST were elevated in CCl4-induced mice while declined in both ABAgNPs and ABaqu treated CCl4-induced mice. Histopathological examination revealed that ABAgNPs have hepato-protective activity. CONCLUSION It was concluded that ABAgNPs and ABaqu possessed strong anti-diabetic and hepato-protective phytoconstituents which could be used in the prevention of diseases.
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Affiliation(s)
- Sadia Nazer
- Microbial Biotechnology laboratory, Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, 13100, Pakistan
| | - Saiqa Andleeb
- Microbial Biotechnology laboratory, Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, 13100, Pakistan
| | - Shaukat Ali
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Nazia Gulzar
- Microbial Biotechnology laboratory, Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, 13100, Pakistan
| | - Abida Raza
- National Institute for Lasers and Optronics (NILOP), Pakistan Atomic Energy Commission, Islamabad, Pakistan
| | - Habib Khan
- Microbial Biotechnology laboratory, Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, 13100, Pakistan
| | - Kalsoom Akhtar
- Department of Chemistry, University of Azad Jammu and Kashmir, Muzaffarabad, 13100, Pakistan
| | - Muhammad Naeem Ahmed
- Department of Chemistry, University of Azad Jammu and Kashmir, Muzaffarabad, 13100, Pakistan
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13
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Heiskanen MA, Honkala SM, Hentilä J, Ojala R, Lautamäki R, Koskensalo K, Lietzén MS, Saunavaara V, Saunavaara J, Helmiö M, Löyttyniemi E, Nummenmaa L, Collado MC, Malm T, Lahti L, Pietiläinen KH, Kaprio J, Rinne JO, Hannukainen JC. Systemic cross-talk between brain, gut, and peripheral tissues in glucose homeostasis: effects of exercise training (CROSSYS). Exercise training intervention in monozygotic twins discordant for body weight. BMC Sports Sci Med Rehabil 2021; 13:16. [PMID: 33627179 PMCID: PMC7905681 DOI: 10.1186/s13102-021-00241-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/03/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Obesity and physical inactivity are major global public health concerns, both of which increase the risk of insulin resistance and type 2 diabetes. Regulation of glucose homeostasis involves cross-talk between the central nervous system, peripheral tissues, and gut microbiota, and is affected by genetics. Systemic cross-talk between brain, gut, and peripheral tissues in glucose homeostasis: effects of exercise training (CROSSYS) aims to gain new systems-level understanding of the central metabolism in human body, and how exercise training affects this cross-talk. METHODS CROSSYS is an exercise training intervention, in which participants are monozygotic twins from pairs discordant for body mass index (BMI) and within a pair at least the other is overweight. Twins are recruited from three population-based longitudinal Finnish twin studies, including twins born in 1983-1987, 1975-1979, and 1945-1958. The participants undergo 6-month-long exercise intervention period, exercising four times a week (including endurance, strength, and high-intensity training). Before and after the exercise intervention, comprehensive measurements are performed in Turku PET Centre, Turku, Finland. The measurements include: two positron emission tomography studies (insulin-stimulated whole-body and tissue-specific glucose uptake and neuroinflammation), magnetic resonance imaging (brain morphology and function, quantification of body fat masses and organ volumes), magnetic resonance spectroscopy (quantification of fat within heart, pancreas, liver and tibialis anterior muscle), echocardiography, skeletal muscle and adipose tissue biopsies, a neuropsychological test battery as well as biosamples from blood, urine and stool. The participants also perform a maximal exercise capacity test and tests of muscular strength. DISCUSSION This study addresses the major public health problems related to modern lifestyle, obesity, and physical inactivity. An eminent strength of this project is the possibility to study monozygotic twin pairs that share the genome at the sequence level but are discordant for BMI that is a risk factor for metabolic impairments such as insulin resistance. Thus, this exercise training intervention elucidates the effects of obesity on metabolism and whether regular exercise training is able to reverse obesity-related impairments in metabolism in the absence of the confounding effects of genetic factors. TRIAL REGISTRATION ClinicalTrials.gov , NCT03730610 . Prospectively registered 5 November 2018.
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Affiliation(s)
- Marja A Heiskanen
- Turku PET Centre, University of Turku, P.O. Box 52, FIN-20521, Turku, Finland
| | - Sanna M Honkala
- Turku PET Centre, University of Turku, P.O. Box 52, FIN-20521, Turku, Finland
| | - Jaakko Hentilä
- Turku PET Centre, University of Turku, P.O. Box 52, FIN-20521, Turku, Finland
| | - Ronja Ojala
- Turku PET Centre, University of Turku, P.O. Box 52, FIN-20521, Turku, Finland
| | | | - Kalle Koskensalo
- Department of Medical Physics, Turku University Hospital, Turku, Finland
| | - Martin S Lietzén
- Turku PET Centre, University of Turku, P.O. Box 52, FIN-20521, Turku, Finland
| | - Virva Saunavaara
- Turku PET Centre, University of Turku, P.O. Box 52, FIN-20521, Turku, Finland
- Department of Medical Physics, Turku University Hospital, Turku, Finland
| | - Jani Saunavaara
- Department of Medical Physics, Turku University Hospital, Turku, Finland
| | - Mika Helmiö
- Division of Digestive Surgery and Urology, Turku University Hospital, Turku, Finland
| | | | - Lauri Nummenmaa
- Turku PET Centre, University of Turku, P.O. Box 52, FIN-20521, Turku, Finland
- Department of Psychology, University of Turku, Turku, Finland
| | - Maria C Collado
- Institute of Agrochemistry and Food Technology-National Research Council (IATA-CSIC), Valencia, Spain
- Functional Food Forum, University of Turku, Turku, Finland
| | - Tarja Malm
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Leo Lahti
- Department of Future Technologies, University of Turku, Turku, Finland
| | - Kirsi H Pietiläinen
- Obesity Research Unit, Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Abdominal Center, Obesity Center, Endocrinology, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Jaakko Kaprio
- Institute for Molecular Medicine Finland FIMM, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Juha O Rinne
- Turku PET Centre, University of Turku, P.O. Box 52, FIN-20521, Turku, Finland
- Turku PET Centre, Turku University Hospital, Turku, Finland
| | - Jarna C Hannukainen
- Turku PET Centre, University of Turku, P.O. Box 52, FIN-20521, Turku, Finland.
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14
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Morales LD, Cromack DT, Tripathy D, Fourcaudot M, Kumar S, Curran JE, Carless M, Göring HHH, Hu SL, Lopez-Alvarenga JC, Garske KM, Pajukanta P, Small KS, Glastonbury CA, Das SK, Langefeld C, Hanson RL, Hsueh WC, Norton L, Arya R, Mummidi S, Blangero J, DeFronzo RA, Duggirala R, Jenkinson CP. Further evidence supporting a potential role for ADH1B in obesity. Sci Rep 2021; 11:1932. [PMID: 33479282 PMCID: PMC7820614 DOI: 10.1038/s41598-020-80563-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 12/06/2020] [Indexed: 01/22/2023] Open
Abstract
Insulin is an essential hormone that regulates glucose homeostasis and metabolism. Insulin resistance (IR) arises when tissues fail to respond to insulin, and it leads to serious health problems including Type 2 Diabetes (T2D). Obesity is a major contributor to the development of IR and T2D. We previously showed that gene expression of alcohol dehydrogenase 1B (ADH1B) was inversely correlated with obesity and IR in subcutaneous adipose tissue of Mexican Americans. In the current study, a meta-analysis of the relationship between ADH1B expression and BMI in Mexican Americans, African Americans, Europeans, and Pima Indians verified that BMI was increased with decreased ADH1B expression. Using established human subcutaneous pre-adipocyte cell lines derived from lean (BMI < 30 kg m-2) or obese (BMI ≥ 30 kg m-2) donors, we found that ADH1B protein expression increased substantially during differentiation, and overexpression of ADH1B inhibited fatty acid binding protein expression. Mature adipocytes from lean donors expressed ADH1B at higher levels than obese donors. Insulin further induced ADH1B protein expression as well as enzyme activity. Knockdown of ADH1B expression decreased insulin-stimulated glucose uptake. Our findings suggest that ADH1B is involved in the proper development and metabolic activity of adipose tissues and this function is suppressed by obesity.
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Affiliation(s)
- Liza D Morales
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA.
| | | | - Devjit Tripathy
- South Texas Veterans Health Care System, San Antonio, TX, USA
- Department of Medicine, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Marcel Fourcaudot
- Department of Medicine, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Satish Kumar
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA
| | - Joanne E Curran
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA
| | - Melanie Carless
- Department of Population Health, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Harald H H Göring
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA
| | - Shirley L Hu
- University of Texas Health Houston, School of Public Health, Brownsville, TX, USA
| | - Juan Carlos Lopez-Alvarenga
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA
| | - Kristina M Garske
- Department of Human Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Päivi Pajukanta
- Department of Human Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | | | | | - Swapan K Das
- Internal Medicine-Endocrinology and Metabolism, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Carl Langefeld
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Robert L Hanson
- Phoenix Epidemiology and Clinical Research Branch, NIDDK, Phoenix, AZ, USA
| | - Wen-Chi Hsueh
- Phoenix Epidemiology and Clinical Research Branch, NIDDK, Phoenix, AZ, USA
| | - Luke Norton
- Department of Medicine, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Rector Arya
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA
| | - Srinivas Mummidi
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA
| | - John Blangero
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA
| | - Ralph A DeFronzo
- South Texas Veterans Health Care System, San Antonio, TX, USA
- Department of Medicine, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Ravindranath Duggirala
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA
| | - Christopher P Jenkinson
- South Texas Diabetes and Obesity Institute Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg/Harlingen/Brownsville, TX, USA.
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15
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Cirelli T, Nepomuceno R, Goveia JM, Orrico SRP, Cirelli JA, Theodoro LH, Barros SP, Scarel-Caminaga RM. Association of type 2 diabetes mellitus and periodontal disease susceptibility with genome-wide association-identified risk variants in a Southeastern Brazilian population. Clin Oral Investig 2021; 25:3873-3892. [PMID: 33392810 DOI: 10.1007/s00784-020-03717-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 11/27/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Genome-wide association studies (GWAS) and literature have identified polymorphisms in the KCNJ11, HNF1A, IRS1, TCF7L2, CDKAL1, CDKN2B, RPSAP52, GPR45 HHEX, IL18, and RUNX2 genes associated with type 2 diabetes mellitus (T2DM) and/or periodontitis (P) in diverse populations, and we sought to evaluate them as genetic risk variants for these diseases in the Brazilian population. MATERIAL AND METHODS Periodontal, glycemic, and lipid data were obtained from 931 individuals divided into: control (n = 334), periodontitis (P; n = 358), and periodontitis associated with T2DM (P + T2DM; n = 239). After genotyping, associations between polymorphisms and pathologies were tested by multiple logistic and linear regressions, adjusting for age, sex, and smoking habits. RESULTS Considering the studied subjects, the increased risk to develop periodontitis in the periodontitis P + T2DM group was found for HNF1A-rs7957197-TA, CDKAL1-rs7754840-CG, RPSAP52-rs1531343-GC, TCF7L2-rs7903146-TT, and CDKN2B-rs7018475-GG. The association of these genetic variants for TCF7L2 and CDKN2B was confirmed for female, never smokers, and poorly controlled P + T2DM. CDKN2B-rs7018475 was associated with worse glycemic condition and periodontal parameters. CONCLUSION These five reported genetic variants were associated in the studied Southeastern Brazilian population as genetic risk variants of periodontitis and T2DM associated to periodontitis as comorbidity. Gene-phenotype associations with sex and smoking habits and the CDKN2B-rs7018475 with the poor glycemic control and more severe periodontal conditions should be further investigated. CLINICAL RELEVANCE Polymorphisms in the CDKAL1-rs7754840, HNF1A-rs7957197, RPSAP52-rs1531343, TCF7L2-rs7903146, and CDKN2B-rs7018475 might predispose to periodontitis and T2DM associated with periodontitis. These findings may be useful in public health genomics and future advanced clinical practice, since genetic carriage can be measured before disease onset, being of potential great benefit for treatment planning and prognosis in early disease stages.
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Affiliation(s)
- Thamiris Cirelli
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil.,Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Rafael Nepomuceno
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil.,Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Jéssica Marina Goveia
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Silvana R P Orrico
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil.,Union of the Colleges of the Great Lakes (UNILAGO), São José do Rio Preto, SP, Brazil
| | - Joni A Cirelli
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Letícia Helena Theodoro
- Department of Surgery and Integrated Clinic, São Paulo State University - UNESP, School of Dentistry at Araçatuba, Araçatuba, SP, Brazil
| | - Silvana P Barros
- Department of Comprehensive Oral Health - Periodontology, University of North Carolina at Chapel Hill - UNC, School of Dentistry, Chapel Hill, NC, USA
| | - Raquel M Scarel-Caminaga
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil.
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Goyal S, Sanghera DK. Genetic and Non-genetic Determinants of Cardiovascular Disease in South Asians. Curr Diabetes Rev 2021; 17:e011721190373. [PMID: 33461471 PMCID: PMC10370262 DOI: 10.2174/1573399817666210118103022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 01/09/2023]
Abstract
South Asians (SAs), people from the Indian subcontinent (e.g., India, Pakistan, Bangladesh, Sri Lanka, and Nepal) have a higher prevalence of cardiovascular disease (CVD) and suffer from a greater risk of CVD-associated mortality compared to other global populations. These problems are compounded by the alterations in lifestyles due to urbanization and changing cultural, social, economic, and political environments. Current methods of CV risk prediction are based on white populations that under-estimate the CVD risk in SAs. Prospective studies are required to obtain actual CVD morbidity/mortality rates so that comparisons between predicted CVD risk can be made with actual events. Overwhelming data support a strong influence of genetic factors. Genome-Wide Association Studies (GWAS) serve as a starting point for future genetic and functional studies since the mechanisms of action by which these associated loci influence CVD is still unclear. It is difficult to predict the potential implication of these findings in clinical settings. This review provides a systematic assessment of the risk factors, genetics, and environmental causes of CV health disparity in SAs, and highlights progress made in clinical and genomics discoveries in the rapidly evolving field, which has the potential to show clinical relevance in the near future.
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Affiliation(s)
- Shiwali Goyal
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Dharambir K Sanghera
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
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17
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AlDehaini DMB, Al-Bustan SA, Ali ME, Malalla ZHA, Sater M, Giha HA. Shortening of the leucocytes' telomeres length in T2DM independent of age and telomerase activity. Acta Diabetol 2020; 57:1287-1295. [PMID: 32500358 DOI: 10.1007/s00592-020-01550-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/19/2020] [Indexed: 01/13/2023]
Abstract
AIMS This study aimed to examine the role of plasma telomerase (TE), plasma insulin, patient's age and disease duration in determination of the leucocytes' telomeres length (LTL) in T2DM. METHODS Blood samples from Kuwaiti patients with T2DM (110) and non-diabetic subjects (94) were analyzed by SYBR Green Quantitative PCR for estimation of the Absolute Human Telomere Length and by ELISA for estimation of the TE activity and insulin level. The body mass index (BMI) and HOMA-IR were calculated. RESULTS The results revealed marked shortening of the LTL in T2DM compared with the non-diabetic subjects (6.068, 2.276-11.652 vs. 10.979, 6.495-23.402 kb), p < 0.001, while the TE concentration was comparable between the two groups (3.16, 0.00-6.02 vs. 4.16, 1.38-7.94 U/L, respectively), p 0.100. Importantly, in T2DM the LTL did not vary significantly with the disease duration (1 month to 40 years), p 0.959, and did not correlate with age, BMI, insulin-resistance, or glycemic parameters. Interestingly, there was a positive correlation between the LTL and insulin levels in T2DM (CC 0.211, p 0.0419). Finally, in non-diabetic subjects, HbA1c ≥ 6% was associated significantly with shorter LTL, this observation together with the lack of association of the LTL with the disease duration, suggests a causal role of short telomeres in T2DM development. CONCLUSIONS This study confirmed the LTL shortening in T2DM in Kuwaiti Arabs, and showed that the LTL was independent of age and TE activity but positively influenced by insulin levels. Furthermore, the study suggested that telomeres shortening could be a risk factor for T2DM.
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Affiliation(s)
- Dhuha M B AlDehaini
- Department of Biochemistry, College of Medicine and Medical Sciences (CMMS), Arabian Gulf University (AGU), P.O. Box 26671, Manama, Kingdom of Bahrain
- Biochemistry Laboratory, Farwaniya Hospital, P.O. Box. 13373, 81004, Farwaniya, Kuwait
| | - Suzanne A Al-Bustan
- Department of Biological Sciences, Faculty of Science, Kuwait University, Kuwait City, Kuwait
| | - Muhalab E Ali
- Department of Biochemistry, College of Medicine and Medical Sciences (CMMS), Arabian Gulf University (AGU), P.O. Box 26671, Manama, Kingdom of Bahrain
| | - Zainab Hasan Abdulla Malalla
- Department of Biochemistry, College of Medicine and Medical Sciences (CMMS), Arabian Gulf University (AGU), P.O. Box 26671, Manama, Kingdom of Bahrain
| | - Mai Sater
- Department of Biochemistry, College of Medicine and Medical Sciences (CMMS), Arabian Gulf University (AGU), P.O. Box 26671, Manama, Kingdom of Bahrain
| | - Hayder A Giha
- Department of Biochemistry, College of Medicine and Medical Sciences (CMMS), Arabian Gulf University (AGU), P.O. Box 26671, Manama, Kingdom of Bahrain.
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18
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Hou G, Jin Y, Liu M, Wang C, Song G. UCP2–866G/A Polymorphism is Associated with Prediabetes and Type 2 Diabetes. Arch Med Res 2020; 51:556-563. [DOI: 10.1016/j.arcmed.2020.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/24/2020] [Accepted: 06/03/2020] [Indexed: 01/19/2023]
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Transcriptional Profiling and Biological Pathway(s) Analysis of Type 2 Diabetes Mellitus in a Pakistani Population. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17165866. [PMID: 32823525 PMCID: PMC7460550 DOI: 10.3390/ijerph17165866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/03/2020] [Accepted: 08/06/2020] [Indexed: 12/22/2022]
Abstract
The epidemic of type 2 diabetes mellitus (T2DM) is an important global health concern. Our earlier epidemiological investigation in Pakistan prompted us to conduct a molecular investigation to decipher the differential genetic pathways of this health condition in relation to non-diabetic controls. Our microarray studies of global gene expression were conducted on the Affymetrix platform using Human Genome U133 Plus 2.0 Array along with Ingenuity Pathway Analysis (IPA) to associate the affected genes with their canonical pathways. High-throughput qRT-PCR TaqMan Low Density Array (TLDA) was performed to validate the selected differentially expressed genes of our interest, viz., ARNT, LEPR, MYC, RRAD, CYP2D6, TP53, APOC1, APOC2, CYP1B1, SLC2A13, and SLC33A1 using a small population validation sample (n = 15 cases and their corresponding matched controls). Overall, our small pilot study revealed a discrete gene expression profile in cases compared to controls. The disease pathways included: Insulin Receptor Signaling, Type II Diabetes Mellitus Signaling, Apoptosis Signaling, Aryl Hydrocarbon Receptor Signaling, p53 Signaling, Mitochondrial Dysfunction, Chronic Myeloid Leukemia Signaling, Parkinson's Signaling, Molecular Mechanism of Cancer, and Cell Cycle G1/S Checkpoint Regulation, GABA Receptor Signaling, Neuroinflammation Signaling Pathway, Dopamine Receptor Signaling, Sirtuin Signaling Pathway, Oxidative Phosphorylation, LXR/RXR Activation, and Mitochondrial Dysfunction, strongly consistent with the evidence from epidemiological studies. These gene fingerprints could lead to the development of biomarkers for the identification of subgroups at high risk for future disease well ahead of time, before the actual disease becomes visible.
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20
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Sapkota BR, Sanghera DK. A rare missense variant in the milk fat globule-EGF factor 8 (MFGE8) increases T2DM susceptibility and cardiovascular disease risk with population-specific effects. Acta Diabetol 2020; 57:733-741. [PMID: 32025861 PMCID: PMC10502938 DOI: 10.1007/s00592-019-01463-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 11/28/2019] [Indexed: 12/26/2022]
Abstract
AIMS The milk fat globule-epidermal growth factor 8 (MFGE8), also called lactadherin, is an integrin ligand and a known mediator of inflammation and atherosclerosis in T2DM in studies using animal models. However, its role in the pathophysiology of human T2DM, obesity, and cardiovascular disease has been poorly explored. Aim of this study was to investigate the role of a missense variant (rs371227978 C/T: Arg148His) in the MFGE8 gene identified through exome sequencing for its association with T2DM and cardiometabolic traits. METHODS Exome-wide sequencing was performed using DNA samples from 68 Sikh individuals from multi-generation pedigrees affected with diabetes on Illumina's GAIIx using "SureSelect Human All Exon" panels. We further replicated this variant by de novo genotyping in a total of 4242 individuals of the Asian Indian Diabetic Heart Study/Sikh Diabetes Study using custom TaqMan genotyping assay. We also measured circulating concentrations of Mfge8 using frozen serum aliquots by enzyme-linked immunosorbent assay. RESULTS Overall, only 1.78% of 4242 individuals were carriers of this variant with MAF being 0.009. Except for the significant correlation of this variant with T2DM and triglycerides, no other quantitative risk phenotype was significant. The minor per allele-associated increased risk for T2DM showed odds ratio of 1.95 (95% CI 1.18-3.23; p = 0.008) in unadjusted model and was 1.73 (95% CI 1.02-2.93; p = 0.043) after adjusting for the age, gender, and BMI. However, there was a strong correlation between serum Mfge8 concentrations with T2DM, (r2 = 0.38; p = 0.001), fasting glucose (r2= 0.36; p = 0.002), and triglycerides (r2 = 0.33; p = 0.005). Our data revealed a significant dose-related increase in MFGE8 genotypes for affecting serum Mfge8 (p = 2.1 × 10-3) and triglyceride concentrations (p = 3.2 × 10-3). For a per risk allele-associated increase of 4.74 ng/ml ± SD of 1.62 ng/ml of the Mfge8 concentration was found to increase T2DM risk to 1.7 fold (95% CI from 1 to 3 fold). CONCLUSIONS Here, we report for the first time a novel population-specific rare variant in the MFGE8 gene linked with the increased Mfge8 concentrations and the risk for developing T2DM and cardiovascular risk factors in a population of Punjabi Sikhs from India. In view of a strong evidence from animal studies supporting the role of Mfge8 in obesity, insulin resistance, and the development of atherosclerosis in T2DM, our findings are important and timely. If validated in a large independent dataset, early screening of Mfge8 in blood levels may especially benefit those patients with genetically elevated Mfge8 levels to preventing or reducing the risk of T2DM and cardiovascular disease.
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Affiliation(s)
- Bishwa R Sapkota
- Department of Pediatrics, College of Medicine, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Rm 317 BMSB, Oklahoma City, OK, 73104, USA
| | - Dharambir K Sanghera
- Department of Pediatrics, College of Medicine, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Rm 317 BMSB, Oklahoma City, OK, 73104, USA.
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
- Department of Physiology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
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21
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DENG Z, GAO W, LUO W, AI L, HU M. Significant Association between Microrna Gene Polymorphisms and Type 2 Diabetes Mellitus Susceptibility in Asian Population: A Meta-Analysis. IRANIAN JOURNAL OF PUBLIC HEALTH 2020; 49:830-836. [PMID: 32953671 PMCID: PMC7475618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND The gene polymorphisms in microRNA might relate to susceptibility of type 2 diabetes mellitus (T2DM). However, the results of existing studies were inconsistent and obscure. To investigate the precise associations between microRNA gene polymorphisms and T2DM risk, the present meta-analysis was performed. METHODS The literatures were searched from four electronic databases, PubMed, Embase, CNKI and Wan-fang. Subsequently, odds ratios (ORs) and the corresponding 95% confidence intervals (CIs) were both used to evaluate the associations between two single nucleotide polymorphisms (SNPs) (microRNA146a rs2910164 (G>C), microRNA124a rs531564 (C>G)) and risk of T2DM in Asian population. RESULTS Totally, there were 4 studies included in our present analysis in the language of English and Chinese. There were partly significant associations between susceptibility of T2DM and SNPs (microRNA146a rs2910164 (G>C), microRNA124a rs531564 (C>G)). The G allele in microRNA146a rs2910164 (G>C) and C allele in microRNA124a rs531564 (C>G) both presented remarkably reduced risk of T2DM when compared with the healthy population. CONCLUSION The microRNA146a rs2910164 (G allele) and microRNA124a rs531564 (C allele) might function as protective factors in the pathogenetic process of T2DM in Asian population.
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Affiliation(s)
- Zhifang DENG
- Department of Pharmacy, The First College of Clinical Medical Science, China Three Gorges University & Yichang Central People’s Hospital, Yichang, 443000, China,Department of Pharmacy, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, China,Corresponding Author:
| | - Wenqi GAO
- Institute of Maternal and Child Health, Wuhan Children’s Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, 430000, China,Department of Central Experimental Laboratory & Yichang Key Laboratory of Ischemic Cardiovascular and Cerebrovascular Disease Translational Medicine, The First College of Clinical Medical Science, China Three Gorges University & Yichang Central People’s Hospital, Yichang, 443003, China
| | - Wei LUO
- Department of Pharmacy, The First College of Clinical Medical Science, China Three Gorges University & Yichang Central People’s Hospital, Yichang, 443000, China
| | - Li AI
- Department of Pharmacy, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, China
| | - Min HU
- Department of Pharmacy, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, China
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22
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Khatami F, Mohajeri-Tehrani MR, Tavangar SM. The Importance of Precision Medicine in Type 2 Diabetes Mellitus (T2DM): From Pharmacogenetic and Pharmacoepigenetic Aspects. Endocr Metab Immune Disord Drug Targets 2020; 19:719-731. [PMID: 31122183 DOI: 10.2174/1871530319666190228102212] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 10/18/2018] [Accepted: 11/21/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Type 2 Diabetes Mellitus (T2DM) is a worldwide disorder as the most important challenges of health-care systems. Controlling the normal glycaemia greatly profit long-term prognosis and gives explanation for early, effective, constant, and safe intervention. MATERIAL AND METHODS Finding the main genetic and epigenetic profile of T2DM and the exact molecular targets of T2DM medications can shed light on its personalized management. The comprehensive information of T2DM was earned through the genome-wide association study (GWAS) studies. In the current review, we represent the most important candidate genes of T2DM like CAPN10, TCF7L2, PPAR-γ, IRSs, KCNJ11, WFS1, and HNF homeoboxes. Different genetic variations of a candidate gene can predict the efficacy of T2DM personalized strategy medication. RESULTS SLCs and AMPK variations are considered for metformin, CYP2C9, KATP channel, CDKAL1, CDKN2A/2B and KCNQ1 for sulphonylureas, OATP1B, and KCNQ1 for repaglinide and the last but not the least ADIPOQ, PPAR-γ, SLC, CYP2C8, and SLCO1B1 for thiazolidinediones response prediction. CONCLUSION Taken everything into consideration, there is an extreme need to determine the genetic status of T2DM patients in some known genetic region before planning the medication strategies.
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Affiliation(s)
- Fatemeh Khatami
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad R Mohajeri-Tehrani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed M Tavangar
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.,Department of Pathology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
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23
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Naaz K, Kumar A, Choudhury I. Assessment of FTO Gene Polymorphism and its Association with Type 2 Diabetes Mellitus in North Indian Populations. Indian J Clin Biochem 2019; 34:479-484. [PMID: 31686736 DOI: 10.1007/s12291-018-0778-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 07/05/2018] [Indexed: 01/21/2023]
Abstract
FTO gene polymorphism related to type 2 diabetes and obesity was studied in this north Indian population. This study was done, due to a continuous increase in the risk of obesity and type 2 diabetes in north Indian population, because of lifestyle and genetic variations. Clinically diagnosed subjects of type 2 diabetes mellitus (as per ADA criteria) were taken as cases and age and sex matched subjects without any associated illness were taken as controls. Obesity was estimated by calculating waist circumference and BMI in the study cases and controls. For genetic variation, DNA was isolated with Quaigen kit method and isolated DNA was amplified with PCR. Amplified DNA was resolved in 1% agarose gel electrophoresis. The Hardy-Weinberg equilibrium, OR, CI and P value were calculated using standard protocols. FTO gene polymorphism (SNP 9940128) was found to be significantly correlated with type 2 diabetes mellitus and obesity. The AG genotype frequency was observed to be higher (13.09%) with (P < 0.0001) in the cases as compared to controls. Logistic regression analysis was conducted for AG and GG genotypes with respect to AA. In this novel study genetic co-relation was observed between FTO gene polymorphisms and type 2 diabetes and obesity in the north Indian population.
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Affiliation(s)
- Kahkashan Naaz
- 1Department of Biochemistry, Rama Medical College and Research Centre, Mandhana, Kanpur, UP India
| | - Anil Kumar
- 2Central Research Laboratory, Rama Medical College Hospital and Research Centre, Mandhana, Kanpur, UP India
| | - Ipsita Choudhury
- Department of Biochemistry, Dr VRK Women's Medical College, Hyderabad, India
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James SN, Wong A, Tillin T, Hardy R, Chaturvedi N, Richards M. The effect of mid-life insulin resistance and type 2 diabetes on older-age cognitive state: the explanatory role of early-life advantage. Diabetologia 2019; 62:1891-1900. [PMID: 31359084 PMCID: PMC6731197 DOI: 10.1007/s00125-019-4949-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 05/28/2019] [Indexed: 12/20/2022]
Abstract
AIMS/HYPOTHESIS Type 2 diabetes, hyperglycaemia and insulin resistance are associated with cognitive impairment and dementia, but causal inference studies using Mendelian randomisation do not confirm this. We hypothesised that early-life cognition and social/educational advantage may confound the relationship. METHODS From the population-based British 1946 birth cohort, a maximum number of 1780 participants had metabolic variables (type 2 diabetes, insulin resistance [HOMA2-IR] and HbA1c) assessed at age 60-64 years, and cognitive state (Addenbrooke's Cognitive Examination III [ACE-III]) and verbal memory assessed at age 69 years. Earlier-life measures included socioeconomic position (SEP), cognition at age 8 years and educational attainment. Polygenic risk scores (PRSs) for type 2 diabetes were calculated. We first used a PRS approach with multivariable linear regression to estimate associations between PRSs and metabolic traits and later-life cognitive state. Second, using a path model approach, we estimated the interrelationships between earlier-life measures, features of mid-life type 2 diabetes and cognitive state at age 69 years. All models were adjusted for sex. RESULTS The externally weighted PRS for type 2 diabetes was associated with mid-life metabolic traits (e.g. HOMA2-IR β = 0.08 [95% CI 0.02, 0.16]), but not with ACE-III (β = 0.04 [-0.02, 0.90]) or other cognitive outcomes. While there was an association between HOMA2-IR and subsequent ACE-III (β = -0.09 [-0.15, -0.03]), path modelling showed no direct effect (β = -0.01 [-0.06, 0.03]) after accounting for the association between childhood SEP and education with HOMA2-IR. The same pattern was observed for later-life verbal memory. CONCLUSIONS/INTERPRETATION Associations between type 2 diabetes and mid-life metabolic traits with subsequent cognitive state do not appear causal, and instead they may be explained by SEP in early life, childhood cognition and educational attainment. Therefore, glucose-lowering medication may be unlikely to combat cognitive impairment in older age.
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Affiliation(s)
- Sarah-Naomi James
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, 1-19 Torrington Place, London, WC1E 7HB, UK.
| | - Andrew Wong
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, 1-19 Torrington Place, London, WC1E 7HB, UK
| | - Therese Tillin
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, 1-19 Torrington Place, London, WC1E 7HB, UK
| | - Rebecca Hardy
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, 1-19 Torrington Place, London, WC1E 7HB, UK
| | - Nishi Chaturvedi
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, 1-19 Torrington Place, London, WC1E 7HB, UK
| | - Marcus Richards
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, 1-19 Torrington Place, London, WC1E 7HB, UK
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Lake JA, Papah MB, Abasht B. Increased Expression of Lipid Metabolism Genes in Early Stages of Wooden Breast Links Myopathy of Broilers to Metabolic Syndrome in Humans. Genes (Basel) 2019; 10:E746. [PMID: 31557856 PMCID: PMC6826700 DOI: 10.3390/genes10100746] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 09/20/2019] [Indexed: 12/20/2022] Open
Abstract
Wooden breast is a muscle disorder affecting modern commercial broiler chickens that causes a palpably firm pectoralis major muscle and severe reduction in meat quality. Most studies have focused on advanced stages of wooden breast apparent at market age, resulting in limited insights into the etiology and early pathogenesis of the myopathy. Therefore, the objective of this study was to identify early molecular signals in the wooden breast transcriptional cascade by performing gene expression analysis on the pectoralis major muscle of two-week-old birds that may later exhibit the wooden breast phenotype by market age at 7 weeks. Biopsy samples of the left pectoralis major muscle were collected from 101 birds at 14 days of age. Birds were subsequently raised to 7 weeks of age to allow sample selection based on the wooden breast phenotype at market age. RNA-sequencing was performed on 5 unaffected and 8 affected female chicken samples, selected based on wooden breast scores (0 to 4) assigned at necropsy where affected birds had scores of 2 or 3 (mildly or moderately affected) while unaffected birds had scores of 0 (no apparent gross lesions). Differential expression analysis identified 60 genes found to be significant at an FDR-adjusted p-value of 0.05. Of these, 26 were previously demonstrated to exhibit altered expression or genetic polymorphisms related to glucose tolerance or diabetes mellitus in mammals. Additionally, 9 genes have functions directly related to lipid metabolism and 11 genes are associated with adiposity traits such as intramuscular fat and body mass index. This study suggests that wooden breast disease is first and foremost a metabolic disorder characterized primarily by ectopic lipid accumulation in the pectoralis major.
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Affiliation(s)
- Juniper A Lake
- Center for Bioinformatics and Computational Biology, University of Delaware, Newark, DE 19711, USA.
| | - Michael B Papah
- Department of Animal and Food Sciences, University of Delaware, Newark, DE 19716, USA.
| | - Behnam Abasht
- Department of Animal and Food Sciences, University of Delaware, Newark, DE 19716, USA.
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Mohamadi M, Ghaedi H, Kazerouni F, Erfanian Omidvar M, Kalbasi S, Shanaki M, Miraalamy G, Rahimipour A. Deregulation of long noncoding RNA SNHG17 and TTC28-AS1 is associated with type 2 diabetes mellitus. Scandinavian Journal of Clinical and Laboratory Investigation 2019; 79:519-523. [PMID: 31509021 DOI: 10.1080/00365513.2019.1664760] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Long noncoding RNAs (lncRNAs) have emerged as key players in several biological processes and complex diseases including type 2 diabetes mellitus (T2DM). The purpose of this study was to investigate the expression levels of SNHG17 and TTC28-AS1 in T2DM patients. Quantitative real-time RT-PCR analysis was performed using peripheral blood mononuclear cells (PBMCs) samples from patients diagnosed with T2DM and healthy controls. Binary logistic regression analysis was carried out to determine the odds of development of T2DM based on expression levels of lncRNAs and clinical characteristic of the subjects. Spearman's correlation analysis was used to clarify the correlation between SNHG17 and TTC28-AS1 expressions to metabolic features. We found that SNHG17 and TTC28-AS1were down-regulated in the T2DM group compared to the healthy control group. The logistic regression revealed that body mass index (BMI), systolic blood pressure (SBP), fasting blood glucose (FBG) and TTC28-AS1 expression substantially affect T2DM susceptibility. Furthermore, expression of SNHG17 was negatively correlated with high-density lipoprotein cholesterol (HDL-C) and expression of TTC28-AS1 was positively correlated with low-density lipoprotein cholesterol (LDL-C). Decreased expressions of lncRNAs TTC28-AS1 and SNHG17 in T2DM are possibly associated with the development of T2DM.
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Affiliation(s)
- Mahroo Mohamadi
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Hamid Ghaedi
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Faranak Kazerouni
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Maryam Erfanian Omidvar
- Department of Clinical Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Saeid Kalbasi
- Department of Endocrinology, Loghman Hospital, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Mehrnoosh Shanaki
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Ghasem Miraalamy
- Ali-Asghar Hospital, Iran University of Medical Sciences , Tehran , Iran
| | - Ali Rahimipour
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences , Tehran , Iran.,Department of Clinical Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences , Tehran , Iran
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Sanghera DK, Hopkins R, Malone-Perez MW, Bejar C, Tan C, Mussa H, Whitby P, Fowler B, Rao CV, Fung KA, Lightfoot S, Frazer JK. Targeted sequencing of candidate genes of dyslipidemia in Punjabi Sikhs: Population-specific rare variants in GCKR promote ectopic fat deposition. PLoS One 2019; 14:e0211661. [PMID: 31369557 PMCID: PMC6675050 DOI: 10.1371/journal.pone.0211661] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 05/28/2019] [Indexed: 12/18/2022] Open
Abstract
Dyslipidemia is a well-established risk factor for cardiovascular diseases. Although, advances in genome-wide technologies have enabled the discovery of hundreds of genes associated with blood lipid phenotypes, most of the heritability remains unexplained. Here we performed targeted resequencing of 13 bona fide candidate genes of dyslipidemia to identify the underlying biological functions. We sequenced 940 Sikh subjects with extreme serum levels of hypertriglyceridemia (HTG) and 2,355 subjects were used for replication studies; all 3,295 participants were part of the Asian Indians Diabetic Heart Study. Gene-centric analysis revealed burden of variants for increasing HTG risk in GCKR (p = 2.1x10-5), LPL (p = 1.6x10-3) and MLXIPL (p = 1.6x10-2) genes. Of these, three missense and damaging variants within GCKR were further examined for functional consequences in vivo using a transgenic zebrafish model. All three mutations were South Asian population-specific and were largely absent in other multiethnic populations of Exome Aggregation Consortium. We built different transgenic models of human GCKR with and without mutations and analyzed the effects of dietary changes in vivo. Despite the short-term of feeding, profound phenotypic changes were apparent in hepatocyte histology and fat deposition associated with increased expression of GCKR in response to a high fat diet (HFD). Liver histology of the GCKRmut showed severe fatty metamorphosis which correlated with ~7 fold increase in the mRNA expression in the GCKRmut fish even in the absence of a high fat diet. These findings suggest that functionally disruptive GCKR variants not only increase the risk of HTG but may enhance ectopic lipid/fat storage defects in absence of obesity and HFD. To our knowledge, this is the first transgenic zebrafish model of a putative human disease gene built to accurately assess the influence of genetic changes and their phenotypic consequences in vivo.
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Affiliation(s)
- Dharambir K. Sanghera
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Ruth Hopkins
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Megan W. Malone-Perez
- Department of Pediatrics, Section of Pediatric Hematology-Oncology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Cynthia Bejar
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Chengcheng Tan
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Huda Mussa
- Department of Pediatrics, Section of Infectious Diseases, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Paul Whitby
- Department of Pediatrics, Section of Infectious Diseases, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Ben Fowler
- Oklahoma Medical Research Foundation, Imaging Core Facility, Oklahoma City, Oklahoma, United States of America
| | - Chinthapally V. Rao
- Center for Cancer Prevention and Drug Development, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - KarMing A. Fung
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, Oklahoma, United States of America
| | - Stan Lightfoot
- Department of Surgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, Oklahoma, United States of America
| | - J. Kimble Frazer
- Department of Pediatrics, Section of Pediatric Hematology-Oncology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
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28
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Influence of obesity, parental history of diabetes, and genes in type 2 diabetes: A case-control study. Sci Rep 2019; 9:2748. [PMID: 30808941 PMCID: PMC6391418 DOI: 10.1038/s41598-019-39145-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 01/18/2019] [Indexed: 12/19/2022] Open
Abstract
Obesity, parental history (PH) of type 2 diabetes (T2D), and genes play an important role in T2D development. However, the influence of each factor on T2D variability is unclear. This study aimed to investigate the influence of obesity (body mass index [BMI], waist/hip ratio), PH, and 16 single-nucleotide polymorphisms (SNPs) associated with T2D on T2D variability in Mexico, comparing 1234 non-diabetic controls and 1219 diabetic patients. To replicate the data, a case-control (n = 2904) and a cross-sectional (n = 1901) study were also included. In a multivariate logistic regression model, all factors accounted for only 27.3% of T2D variability: SNPs (8.4%); PH (11.8%) and obesity (7.1%). These factors contributed more in men (33.2%) than in women (25%), specifically when the disease was diagnosed before the age of 46 (46.7% vs. 30%). Genes played a substantially more important role in men than in women (14.9% vs. 5.5%), while obesity and PH played a similar role in both genders. Genes and PH appeared to play a greater role than obesity in T2D. However, obesity contribution was calculated at the time of recruitment and may be underestimated in patients because the BMI decreased linearly with the number of years with the disease. The data suggest that sexual hormones may play important roles in genes that are associated with T2D.
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O’Beirne SL, Salit J, Rodriguez-Flores JL, Staudt MR, Abi Khalil C, Fakhro KA, Robay A, Ramstetter MD, Malek JA, Zirie M, Jayyousi A, Badii R, Al-Nabet Al-Marri A, Bener A, Mahmoud M, Chiuchiolo MJ, Al-Shakaki A, Chidiac O, Stadler D, Mezey JG, Crystal RG. Exome sequencing-based identification of novel type 2 diabetes risk allele loci in the Qatari population. PLoS One 2018; 13:e0199837. [PMID: 30212457 PMCID: PMC6136697 DOI: 10.1371/journal.pone.0199837] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 06/14/2018] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Type 2 diabetes (T2D) susceptibility is influenced by genetic and lifestyle factors. To date, the majority of genetic studies of T2D have been in populations of European and Asian descent. The focus of this study is on genetic variations underlying T2D in Qataris, a population with one of the highest incidences of T2D worldwide. RESULTS Illumina HiSeq exome sequencing was performed on 864 Qatari subjects (574 T2D cases, 290 controls). Sequence kernel association test (SKAT) gene-based analysis identified an association for low frequency potentially deleterious variants in 6 genes. However, these findings were not replicated by SKAT analysis in an independent cohort of 12,699 exomes, primarly due to the absence of low frequency potentially deleterious variants in 5 of the 6 genes. Interestingly one of the genes identified, catenin beta 1 (CTNNB1, β-catenin), is the key effector of the Wnt pathway and interacts with the nuclear receptor transcription factor 7-like 2 (TCF7L2), variants which are the most strongly associated with risk of developing T2D worldwide. Single variant analysis did not identify any associated variants, suggesting the SKAT association signal was not driven by individual variants. None of the 6 associated genes were among 634 previously described T2D genes. CONCLUSIONS The observation that genes not previously linked to T2D in prior studies of European and Asian populations are associated with T2D in Qatar provides new insights into the complexity of T2D pathogenesis and emphasizes the importance of understudied populations when assessing genetic variation in the pathogenesis of common disorders.
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Affiliation(s)
- Sarah L. O’Beirne
- Department of Genetic Medicine, Weill Cornell Medical College, New York, New York, United States of America
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Weill Cornell Medical College, New York, New York, United States of America
| | - Jacqueline Salit
- Department of Genetic Medicine, Weill Cornell Medical College, New York, New York, United States of America
| | - Juan L. Rodriguez-Flores
- Department of Genetic Medicine, Weill Cornell Medical College, New York, New York, United States of America
| | - Michelle R. Staudt
- Department of Genetic Medicine, Weill Cornell Medical College, New York, New York, United States of America
| | - Charbel Abi Khalil
- Department of Genetic Medicine, Weill Cornell Medical College-Qatar, Doha, Qatar
| | - Khalid A. Fakhro
- Department of Genetic Medicine, Weill Cornell Medical College-Qatar, Doha, Qatar
- Division of Translational Medicine, Sidra Medical Research Centre, Doha, Qatar
| | - Amal Robay
- Department of Genetic Medicine, Weill Cornell Medical College-Qatar, Doha, Qatar
| | - Monica D. Ramstetter
- Department of Genetic Medicine, Weill Cornell Medical College, New York, New York, United States of America
- Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY, United States of America
| | - Joel A. Malek
- Department of Genetic Medicine, Weill Cornell Medical College-Qatar, Doha, Qatar
| | - Mahmoud Zirie
- Department of Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Amin Jayyousi
- Department of Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Ramin Badii
- Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar
| | | | - Abdulbari Bener
- Department of Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Mai Mahmoud
- Department of Medicine, Weill Cornell Medical College-Qatar, Doha, Qatar
| | - Maria J. Chiuchiolo
- Department of Genetic Medicine, Weill Cornell Medical College, New York, New York, United States of America
| | - Alya Al-Shakaki
- Department of Genetic Medicine, Weill Cornell Medical College-Qatar, Doha, Qatar
| | - Omar Chidiac
- Department of Genetic Medicine, Weill Cornell Medical College-Qatar, Doha, Qatar
| | - Dora Stadler
- Department of Medicine, Weill Cornell Medical College-Qatar, Doha, Qatar
| | - Jason G. Mezey
- Department of Genetic Medicine, Weill Cornell Medical College, New York, New York, United States of America
- Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY, United States of America
| | - Ronald G. Crystal
- Department of Genetic Medicine, Weill Cornell Medical College, New York, New York, United States of America
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Weill Cornell Medical College, New York, New York, United States of America
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30
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Karanth S, Adams JD, Serrano MDLA, Quittner-Strom EB, Simcox J, Villanueva CJ, Ozcan L, Holland WL, Yost HJ, Vella A, Schlegel A. A Hepatocyte FOXN3-α Cell Glucagon Axis Regulates Fasting Glucose. Cell Rep 2018; 24:312-319. [PMID: 29996093 DOI: 10.1016/j.celrep.2018.06.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 05/07/2018] [Accepted: 06/08/2018] [Indexed: 01/26/2023] Open
Abstract
The common genetic variation at rs8004664 in the FOXN3 gene is independently and significantly associated with fasting blood glucose, but not insulin, in non-diabetic humans. Recently, we reported that primary hepatocytes from rs8004664 hyperglycemia risk allele carriers have increased FOXN3 transcript and protein levels and liver-limited overexpression of human FOXN3, a transcriptional repressor that had not been implicated in metabolic regulation previously, increases fasting blood glucose in zebrafish. Here, we find that injection of glucagon into mice and adult zebrafish decreases liver Foxn3 protein and transcript levels. Zebrafish foxn3 loss-of-function mutants have decreased fasting blood glucose, blood glucagon, liver gluconeogenic gene expression, and α cell mass. Conversely, liver-limited overexpression of foxn3 increases α cell mass. Supporting these genetic findings in model organisms, non-diabetic rs8004664 risk allele carriers have decreased suppression of glucagon during oral glucose tolerance testing. By reciprocally regulating each other, liver FOXN3 and glucagon control fasting glucose.
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Affiliation(s)
- Santhosh Karanth
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT, USA; Department of Internal Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - J D Adams
- Department of Internal Medicine, Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Maria de Los Angeles Serrano
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT, USA; Department of Neurobiology and Anatomy, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Ezekiel B Quittner-Strom
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT, USA; Department of Nutrition and Integrative Physiology, University of Utah College of Health, Salt Lake City, UT, USA
| | - Judith Simcox
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Claudio J Villanueva
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Lale Ozcan
- Department of Medicine, Division of Molecular Medicine, Columbia University Medical Center, New York, NY, USA
| | - William L Holland
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT, USA; Department of Nutrition and Integrative Physiology, University of Utah College of Health, Salt Lake City, UT, USA; Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - H Joseph Yost
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT, USA; Department of Neurobiology and Anatomy, University of Utah School of Medicine, Salt Lake City, UT, USA; Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Adrian Vella
- Department of Internal Medicine, Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Amnon Schlegel
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT, USA; Department of Internal Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Utah School of Medicine, Salt Lake City, UT, USA; Department of Nutrition and Integrative Physiology, University of Utah College of Health, Salt Lake City, UT, USA; Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA.
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31
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Kulanuwat S, Tangjittipokin W, Jungtrakoon P, Chanprasert C, Sujjitjoon J, Binnima N, Yenchitsomanus PT, Plengvidhya N. DNAJC3 mutation in Thai familial type 2 diabetes mellitus. Int J Mol Med 2018; 42:1064-1073. [PMID: 29767246 DOI: 10.3892/ijmm.2018.3678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 05/08/2018] [Indexed: 11/05/2022] Open
Abstract
Type 2 diabetes mellitus (T2D) is a heterogeneous disease, with certain cases presenting an autosomal dominant type. The rare coding variants of disease‑causing genes in T2D remain mostly unclear. The present study aimed to identify the disease‑causing gene conducting whole exome sequencing in a Thai T2D family with an autosomal dominant transmission of T2D with no evidence of mutations in known maturity‑onset diabetes of the young (MODY) genes. Candidate variants were selected according to certain criteria of mutation prediction programs, followed by segregation analysis with diabetes in the family. The results demonstrated that, of the 68,817 variants obtained, 122 were considered as candidate variants subsequent to the filtering processes. Genotyping of these variants revealed that DnaJ homolog subfamily C member 3 (DNAJC3) p.H238N segregated with diabetes in the family. This mutation was also identified in another proband from the autosomal dominant T2D family without mutation in known MODY genes and was segregated with diabetes. This variant was also identified in 14/1,000 older‑onset T2D patients [minor allele frequency (MAF)=0.007], 2/500 non‑diabetic controls (MAF=0.002) and 3 prediabetic individuals who were previously classified as non‑diabetic controls. In silico mutagenesis and protein modeling of p.H238N revealed changes of the polar contacts across the tetratricopeptide repeat (TPR) motif and TPR subdomains, which may affect the protein tertiary structure. Furthermore, the expression of DNAJC3 H238N protein was 0.68±0.08 fold (P<0.05) lower when compared with that of the wild‑type, possibly due to protein instability. Thus, DNAJC3 p.H238N is likely to be a variant causing diabetes.
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Affiliation(s)
- Sirikul Kulanuwat
- Siriraj Center of Research Excellence for Diabetes and Obesity, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Watip Tangjittipokin
- Siriraj Center of Research Excellence for Diabetes and Obesity, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Prapaporn Jungtrakoon
- Siriraj Center of Research Excellence for Diabetes and Obesity, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Chutima Chanprasert
- Siriraj Center of Research Excellence for Diabetes and Obesity, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Jatuporn Sujjitjoon
- Siriraj Center of Research Excellence for Diabetes and Obesity, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Ninareeman Binnima
- Siriraj Center of Research Excellence for Diabetes and Obesity, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Pa-Thai Yenchitsomanus
- Siriraj Center of Research Excellence for Diabetes and Obesity, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Nattachet Plengvidhya
- Siriraj Center of Research Excellence for Diabetes and Obesity, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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Abstract
The majority of gene loci that have been associated with type 2 diabetes play a role in pancreatic islet function. To evaluate the role of islet gene expression in the etiology of diabetes, we sensitized a genetically diverse mouse population with a Western diet high in fat (45% kcal) and sucrose (34%) and carried out genome-wide association mapping of diabetes-related phenotypes. We quantified mRNA abundance in the islets and identified 18,820 expression QTL. We applied mediation analysis to identify candidate causal driver genes at loci that affect the abundance of numerous transcripts. These include two genes previously associated with monogenic diabetes (PDX1 and HNF4A), as well as three genes with nominal association with diabetes-related traits in humans (FAM83E, IL6ST, and SAT2). We grouped transcripts into gene modules and mapped regulatory loci for modules enriched with transcripts specific for α-cells, and another specific for δ-cells. However, no single module enriched for β-cell-specific transcripts, suggesting heterogeneity of gene expression patterns within the β-cell population. A module enriched in transcripts associated with branched-chain amino acid metabolism was the most strongly correlated with physiological traits that reflect insulin resistance. Although the mice in this study were not overtly diabetic, the analysis of pancreatic islet gene expression under dietary-induced stress enabled us to identify correlated variation in groups of genes that are functionally linked to diabetes-associated physiological traits. Our analysis suggests an expected degree of concordance between diabetes-associated loci in the mouse and those found in human populations, and demonstrates how the mouse can provide evidence to support nominal associations found in human genome-wide association mapping.
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Sikhayeva N, Talzhanov Y, Iskakova A, Dzharmukhanov J, Nugmanova R, Zholdybaeva E, Ramanculov E. Type 2 diabetes mellitus: distribution of genetic markers in Kazakh population. Clin Interv Aging 2018; 13:377-388. [PMID: 29551892 PMCID: PMC5842777 DOI: 10.2147/cia.s156044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Ethnic differences exist in the frequencies of genetic variations that contribute to the risk of common disease. This study aimed to analyse the distribution of several genes, previously associated with susceptibility to type 2 diabetes and obesity-related phenotypes, in a Kazakh population. Methods A total of 966 individuals belonging to the Kazakh ethnicity were recruited from an outpatient clinic. We genotyped 41 common single nucleotide polymorphisms (SNPs) previously associated with type 2 diabetes in other ethnic groups and 31 of these were in Hardy–Weinberg equilibrium. The obtained allele frequencies were further compared to publicly available data from other ethnic populations. Allele frequencies for other (compared) populations were pooled from the haplotype map (HapMap) database. Principal component analysis (PCA), cluster analysis, and multidimensional scaling (MDS) were used for the analysis of genetic relationship between the populations. Results Comparative analysis of allele frequencies of the studied SNPs showed significant differentiation among the studied populations. The Kazakh population was grouped with Asian populations according to the cluster analysis and with the Caucasian populations according to PCA. According to MDS, results of the current study show that the Kazakh population holds an intermediate position between Caucasian and Asian populations. Conclusion A high percentage of population differentiation was observed between Kazakh and world populations. The Kazakh population was clustered with Caucasian populations, and this result may indicate a significant Caucasian component in the Kazakh gene pool.
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Affiliation(s)
- Nurgul Sikhayeva
- National Scientific Laboratory of Biotechnology, National Center for Biotechnology, Astana, Kazakhstan.,Faculty of Natural Sciences, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
| | - Yerkebulan Talzhanov
- National Scientific Laboratory of Biotechnology, National Center for Biotechnology, Astana, Kazakhstan
| | - Aisha Iskakova
- National Scientific Laboratory of Biotechnology, National Center for Biotechnology, Astana, Kazakhstan
| | - Jarkyn Dzharmukhanov
- National Scientific Laboratory of Biotechnology, National Center for Biotechnology, Astana, Kazakhstan
| | - Raushan Nugmanova
- National Scientific Laboratory of Biotechnology, National Center for Biotechnology, Astana, Kazakhstan
| | - Elena Zholdybaeva
- National Scientific Laboratory of Biotechnology, National Center for Biotechnology, Astana, Kazakhstan
| | - Erlan Ramanculov
- National Scientific Laboratory of Biotechnology, National Center for Biotechnology, Astana, Kazakhstan.,Faculty of Natural Sciences, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan.,School of Science and Technology, Nazarbayev University, Astana, Kazakhstan
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IAPP/amylin and β-cell failure: implication of the risk factors of type 2 diabetes. Diabetol Int 2018; 9:143-157. [PMID: 30603362 DOI: 10.1007/s13340-018-0347-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 01/21/2018] [Indexed: 12/12/2022]
Abstract
In type 2 diabetes (T2D), the most significant pathological change in pancreatic islets is amyloid deposits, of which a major component is islet amyloid polypeptide (IAPP), also called amylin. IAPP is expressed in β-cells and co-secreted with insulin. Together with the inhibitory effects of synthetic human IAPP (hIAPP) on insulin secretion, our studies, using hIAPP transgenic mice, in which glucose-stimulated insulin secretion was moderately reduced without amyloid deposit, and hIAPP gene-transfected β-cell lines, in which insulin secretion was markedly impaired without amyloid, predicted that soluble hIAPP-related molecules would exert cytotoxicity on β-cells. Human IAPP is one of the most aggregation-prone peptides that interact with cell membranes. While it is widely reported that soluble hIAPP oligomers promote cytotoxicity, this is still a hypothesis since the mechanisms are not yet fully defined. Several hIAPP transgenic mouse models did not develop diabetes; however, in models with backgrounds characterized for diabetic phenotypes, β-cell function and glucose tolerance did worsen, compared to those in non-transgenic models with similar backgrounds. Together with these findings, many studies on metabolic and molecular disorders induced by risk factors of T2D suggest that in T2D subjects, toxic IAPP oligomers accumulate in β-cells, impair their function, and reduce mass through disruption of cell membranes, resulting in β-cell failure. IAPP might be central to β-cell failure in T2D. Anti-amyloid aggregation therapeutics will be developed to create treatments with more durable and beneficial effects on β-cell function.
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35
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Hubacek JA, Dlouha D, Klementova M, Lanska V, Neskudla T, Pelikanova T. The FTO variant is associated with chronic complications of diabetes mellitus in Czech population. Gene 2017; 642:220-224. [PMID: 29154870 DOI: 10.1016/j.gene.2017.11.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 11/03/2017] [Accepted: 11/13/2017] [Indexed: 01/19/2023]
Abstract
BACKGROUND Genome-wide association studies have resulted in the identification of the FTO gene as an important genetic determinant of diabetes mellitus. The aim of this study was to confirm the role of this gene in the development of DM in the Czech-Slavonic population and to analyse whether this gene is associated with common DM complications. METHODS Two groups of patients (814 with T1DM and 848 with T2DM) and a group of healthy controls (2339 individuals) - both of Czech origin - were genotyped for the FTO rs17817449 SNP. ANOVA and logistic regression were used for the statistical evaluations. RESULTS The frequency of the GG genotype was significantly higher in T2DM (25.4% vs. 16.7%, P<0.0005) but not in T1DM patients (19.3% vs. 16.7%, P=0.20) than in controls. The increased risk of development of diabetic nephropathy was observed both for T1DM patients (GG vs. TT homozygotes, P<0.01) and T2DM patients (G carriers vs. TT homozygotes, P<0.05). FTO genotype predicted the development of diabetic neuropathy (GG vs. TT comparison; P<0.01) in the T2DM patients only. No association between FTO genotype and development of retinopathy was detected. All presented values are after adjustment for age, sex, BMI and duration of diabetes. CONCLUSIONS We confirm the association between the FTO rs17817449 SNP and susceptibility to T2DM in the Czech-Slavonic population. The same variant is associated with a spectrum of chronic complications in both types of diabetes.
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Affiliation(s)
- Jaroslav A Hubacek
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
| | - Dana Dlouha
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Marta Klementova
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Vera Lanska
- Medical Statistics Unit, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Tomas Neskudla
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Terezie Pelikanova
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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Fadason T, Ekblad C, Ingram JR, Schierding WS, O'Sullivan JM. Physical Interactions and Expression Quantitative Traits Loci Identify Regulatory Connections for Obesity and Type 2 Diabetes Associated SNPs. Front Genet 2017; 8:150. [PMID: 29081791 PMCID: PMC5645506 DOI: 10.3389/fgene.2017.00150] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 09/28/2017] [Indexed: 12/25/2022] Open
Abstract
The mechanisms that underlie the association between obesity and type 2 diabetes are not fully understood. Here, we investigated the role of the 3D genome organization in the pathogeneses of obesity and type-2 diabetes. We interpreted the combined and differential impacts of 196 diabetes and 390 obesity associated single nucleotide polymorphisms (SNPs) by integrating data on the genes with which they physically interact (as captured by Hi-C) and the functional [i.e., expression quantitative trait loci (eQTL)] outcomes associated with these interactions. We identified 861 spatially regulated genes (e.g., AP3S2, ELP5, SVIP, IRS1, FADS2, WFS1, RBM6, HORMAD1, PYROXD2), which are enriched in tissues (e.g., adipose, skeletal muscle, pancreas) and biological processes and canonical pathways (e.g., lipid metabolism, leptin, and glucose-insulin signaling pathways) that are important for the pathogenesis of type 2 diabetes and obesity. Our discovery-based approach also identifies enrichment for eQTL SNP-gene interactions in tissues that are not classically associated with diabetes or obesity. We propose that the combinatorial action of active obesity and diabetes spatial eQTL SNPs on their gene pairs within different tissues reduces the ability of these tissues to contribute to the maintenance of a healthy energy metabolism.
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Affiliation(s)
- Tayaza Fadason
- Liggins Institute, University of Auckland, Auckland, New Zealand
| | - Cameron Ekblad
- Liggins Institute, University of Auckland, Auckland, New Zealand
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RNA-seq analysis of the kidneys of broiler chickens fed diets containing different concentrations of calcium. Sci Rep 2017; 7:11740. [PMID: 28924246 PMCID: PMC5603577 DOI: 10.1038/s41598-017-11379-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 08/23/2017] [Indexed: 01/13/2023] Open
Abstract
Calcium (Ca) is required for normal growth and is involved in cellular physiology, signal transduction, and bone mineralization. In humans, inadequate Ca intake causes hypocalcaemia, and excessive Ca intake causes hypercalcemia. In chicken, Ca is also required for body weight gain and eggshell formation. However, transcriptomic responses to low/high Ca intake, and mechanisms affecting body weight have not been explored. In this study, we performed comparative RNA sequencing (RNA-seq) using the kidney of broiler chickens fed diets containing 0.8, 1.0, and 1.2% Ca. Annotation of RNA-seq data revealed a significant number of differentially expressed genes (DEGs) in the kidney via pairwise comparison using Cufflinks and edgeR. Using edgeR, we identified 12 DEGs; seven overlapped with those found by cufflinks. Seven DEGs were validated by real-time quantitative-PCR (qRT-PCR) in Ca-supplemented kidneys, and the results correlated with the RNA-seq data. DEGs identified by cufflinks/edgeR were subjected to pathway enrichment, protein/protein interaction, and co-occurrence analyses to determine their involvement in disease. The National Research Council (NRC) recommended Ca intake for 21-day post-hatch broilers is about 1.0%. Our findings suggest that higher-than-recommended Ca intake (1.2%) could reduce body weight gain in broilers, and that affected DEGs are related to stress-induced diseases, such as hypertension.
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Sikhayeva N, Iskakova A, Saigi-Morgui N, Zholdybaeva E, Eap CB, Ramanculov E. Association between 28 single nucleotide polymorphisms and type 2 diabetes mellitus in the Kazakh population: a case-control study. BMC MEDICAL GENETICS 2017; 18:76. [PMID: 28738793 PMCID: PMC5525290 DOI: 10.1186/s12881-017-0443-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 07/13/2017] [Indexed: 02/06/2023]
Abstract
Background We evaluated the associations between single nucleotide polymorphisms and different clinical parameters related to type 2 diabetes mellitus (T2DM), obesity risk, and metabolic syndrome (MS) in a Kazakh cohort. Methods A total of 1336 subjects, including 408 T2DM patients and 928 control subjects, were recruited from an outpatient clinic and genotyped for 32 polymorphisms previously associated with T2DM and obesity-related phenotypes in other ethnic groups. For association studies, the chi-squared test or Fisher’s exact test for binomial variables were used. Logistic regression was conducted to explore associations between the studied SNPs and the risk of developing T2DM, obesity, and MS, after adjustments for age and sex. Results After excluding four SNPs due to Hardy-Weinberg disequilibrium, significant associations in age-matched cohorts were found betweenT2DM and the following SNPs: rs9939609 (FTO), rs13266634 (SLC30A8), rs7961581 (TSPAN8/LGR5), and rs1799883 (FABP2). In addition, examination of general unmatched T2DM and control cohorts revealed significant associations between T2DM and SNPsrs1799883 (FABP2) and rs9939609 (FTO). Furthermore, polymorphisms in the FTO gene were associated with increased obesity risk, whereas polymorphisms in the FTO and FABP2 genes were also associated with the risk of developing MS in general unmatched cohorts. Conclusion We confirmed associations between polymorphisms within the SLC30A8, TSPAN8/LGR5, FABP2, and FTO genes and susceptibility to T2DM in a Kazakh cohort, and revealed significant associations with anthropometric and metabolic traits. In particular, FTO and FABP2 gene polymorphisms were significantly associated with susceptibility to MS and obesity in this cohort. Electronic supplementary material The online version of this article (doi:10.1186/s12881-017-0443-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nurgul Sikhayeva
- National Center for Biotechnology, 13/5 Korgalzhyn str, Astana, 010000, Kazakhstan. .,L.N. Gumilyov Eurasian National University, Astana, Kazakhstan.
| | - Aisha Iskakova
- National Center for Biotechnology, 13/5 Korgalzhyn str, Astana, 010000, Kazakhstan
| | - Nuria Saigi-Morgui
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, 1008, Prilly-Lausanne, Switzerland
| | - Elena Zholdybaeva
- National Center for Biotechnology, 13/5 Korgalzhyn str, Astana, 010000, Kazakhstan
| | - Chin-Bin Eap
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, 1008, Prilly-Lausanne, Switzerland.,School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland
| | - Erlan Ramanculov
- National Center for Biotechnology, 13/5 Korgalzhyn str, Astana, 010000, Kazakhstan.,L.N. Gumilyov Eurasian National University, Astana, Kazakhstan.,School of Science and Technology, Nazarbayev University, Astana, Kazakhstan
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Rasheed MA, Kantoush N, Abd El-Ghaffar N, Farouk H, Kamel S, Ibrahim AA, Shalaby A, Mahmoud E, Raslan HM, Saleh OM. Expression of JAZF1, ABCC8, KCNJ11and Notch2 genes and vitamin D receptor polymorphisms in type 2 diabetes, and their association with microvascular complications. Ther Adv Endocrinol Metab 2017; 8:97-108. [PMID: 28794851 PMCID: PMC5524251 DOI: 10.1177/2042018817708910] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 04/17/2017] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND We studied JAZF1, ABCC8, KCNJ11and Notch2 gene expression and vitamin D receptor (VDR) polymorphisms (Fok1 and Bsm1) in patients with type 2 diabetes mellitus (T2DM) and tried to find out their association with microvascular complications in these patients. METHODS The study was conducted on 180 patients (93 complicated and 87 noncomplicated) and 150 healthy subjects. Reverse-transcriptase polymerase chain reaction (RT-PCR) was used to assess gene expression and real-time PCR was used to detect VDR genotypes. Serum vitamin D was assessed using Elisa technique. RESULTS After adjustment for age, sex, body mass index and glycated hemoglobin, altered Notch2 gene expression was found between patients and controls and between complicated and noncomplicated cases (p = 0.001 and 0.001, respectively) and ABCC8 gene expression showed significant difference between patients and controls only (p = 0.003), while JAZF1and KCNJ11 expression showed no significant difference between the studied groups (p = 0.3 and 0.4, respectively). Serum vitamin D level was decreased in patients compared with controls (p = 0.001), while no difference was detected between complicated and noncomplicated cases (p = 0.1). Our results revealed no significant difference in VDR Fok1 and Bsm1 genotype distributions (p = 0.7 and 0.1, respectively) and allele frequencies (p = 0.4 and 0.1, respectively) between patients and controls. Patients with complications showed increased frequencies of Fok1GG genotype and G allele, while patients without complications showed increased frequencies of AA, then AG Fok1 genotype and A allele (p = 0.001 and 0.001, respectively). In addition, the frequencies of CC Bsm1 genotype and C allele were significantly higher among patients with complications, while frequencies of TT Bsm1 genotype and T allele were significantly higher among patients without complications (p = 0.02 and 0.003, respectively). CONCLUSION Altered expression of Notch2 and ABCC8 genes may play a role in the pathogenesis of T2DM. Altered expression of Notch2 and VDR polymorphisms may play a role in the development of microvascular complications in diabetic patients. These results may assist in early identification and management of diabetic complications.
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Affiliation(s)
- Maha A. Rasheed
- Clinical and Chemical Pathology Department, National Research Centre, Cairo, Egypt
| | - Nagwa Kantoush
- Clinical and Chemical Pathology Department, National Research Centre, Cairo, Egypt
| | - Nagwa Abd El-Ghaffar
- Clinical and Chemical Pathology Department, National Research Centre, Cairo, Egypt
| | - Hebatallah Farouk
- Clinical and Chemical Pathology Department, National Research Centre, Cairo, Egypt
| | - Solaf Kamel
- Clinical and Chemical Pathology Department, National Research Centre, Cairo, Egypt
| | | | - Aliaa Shalaby
- Clinical and Chemical Pathology Department, National Research Centre, Cairo, Egypt
| | - Eman Mahmoud
- Clinical and Chemical Pathology Department, National Research Centre, Cairo, Egypt
| | - Hala M. Raslan
- Internal Medicine Department, National Research Centre, Cairo, Egypt
| | - Omneya M. Saleh
- Internal Medicine Department, National Research Centre, Cairo, Egypt
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Type 2 Diabetes Susceptibility in the Greek-Cypriot Population: Replication of Associations with TCF7L2, FTO, HHEX, SLC30A8 and IGF2BP2 Polymorphisms. Genes (Basel) 2017; 8:genes8010016. [PMID: 28067832 PMCID: PMC5295011 DOI: 10.3390/genes8010016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/13/2016] [Accepted: 12/30/2016] [Indexed: 01/17/2023] Open
Abstract
Type 2 diabetes (T2D) has been the subject of numerous genetic studies in recent years which revealed associations of the disease with a large number of susceptibility loci. We hereby initiate the evaluation of T2D susceptibility loci in the Greek-Cypriot population by performing a replication case-control study. One thousand and eighteen individuals (528 T2D patients, 490 controls) were genotyped at 21 T2D susceptibility loci, using the allelic discrimination method. Statistically significant associations of T2D with five of the tested single nucleotide polymorphisms (SNPs) (TCF7L2 rs7901695, FTO rs8050136, HHEX rs5015480, SLC30A8 rs13266634 and IGF2BP2 rs4402960) were observed in this study population. Furthermore, 14 of the tested SNPs had odds ratios (ORs) in the same direction as the previously published studies, suggesting that these variants can potentially be used in the Greek-Cypriot population for predictive testing of T2D. In conclusion, our findings expand the genetic assessment of T2D susceptibility loci and reconfirm five of the worldwide established loci in a distinct, relatively small, newly investigated population.
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Role of PPARG (Pro12Ala) in Malaysian type 2 diabetes mellitus patients. Int J Diabetes Dev Ctries 2016. [DOI: 10.1007/s13410-015-0462-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Sethi I, Bhat GR, Singh V, Kumar R, Bhanwer AJS, Bamezai RNK, Sharma S, Rai E. Role of telomeres and associated maintenance genes in Type 2 Diabetes Mellitus: A review. Diabetes Res Clin Pract 2016; 122:92-100. [PMID: 27816684 DOI: 10.1016/j.diabres.2016.10.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 10/09/2016] [Accepted: 10/16/2016] [Indexed: 02/07/2023]
Abstract
Type 2 Diabetes Mellitus (T2DM), a multifactorial complex disorder, is emerging as a major cause of morbidity, mortality and socio-economic burden across the world. Despite huge efforts in understanding genetics of T2DM, only ∼10% of the genetic factors have been identified so far. Telomere attrition, a natural phenomenon has recently emerged in understanding the pathophysiology of T2DM. It has been indicated that Telomeres and associated pathways might be the critical components in the disease etiology, though the mechanism(s) involved are not clear. Recent Genome Wide (GWAS) and Candidate Gene Case-Control Association Studies have also indicated an association of Telomere and associated pathways related genes with T2DM. Single Nucleotide Polymorphisms (SNPs) in the telomere maintenance genes: TERT, TERC, TNKS, CSNK2A2, TEP1, ACD, TRF1 and TRF2, have shown strong association with telomere attrition in T2DM and its pathophysiology, in these studies. However, the assessment has been made within limited ethnicities (Caucasians, Han Chinese cohort and Punjabi Sikhs from South Asia), warranting the study of such associations in different ethnic groups. Here, we propose the possible mechanisms, in the light of existing knowledge, to understand the association of T2DM with telomeres and associated pathways.
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Affiliation(s)
- Itty Sethi
- Human Genetics Research Group, Department of Biotechnology, Shri Mata Vaishno Devi University Katra, J&K 182320, India
| | - G R Bhat
- Human Genetics Research Group, Department of Biotechnology, Shri Mata Vaishno Devi University Katra, J&K 182320, India
| | - Vinod Singh
- Human Genetics Research Group, Department of Biotechnology, Shri Mata Vaishno Devi University Katra, J&K 182320, India
| | - Rakesh Kumar
- Human Genetics Research Group, Department of Biotechnology, Shri Mata Vaishno Devi University Katra, J&K 182320, India
| | - A J S Bhanwer
- Department of Human Genetics, Guru Nanak Dev University, Amritsar, Punjab 143005, India
| | - Rameshwar N K Bamezai
- National Centre of Applied Human Genetics, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Swarkar Sharma
- Human Genetics Research Group, Department of Biotechnology, Shri Mata Vaishno Devi University Katra, J&K 182320, India.
| | - Ekta Rai
- Human Genetics Research Group, Department of Biotechnology, Shri Mata Vaishno Devi University Katra, J&K 182320, India.
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Ghaedi H, Tabasinezhad M, Alipoor B, Shokri F, Movafagh A, Mirfakhraie R, Omrani MD, Masotti A. The pre-mir-27a variant rs895819 may contribute to type 2 diabetes mellitus susceptibility in an Iranian cohort. J Endocrinol Invest 2016; 39:1187-93. [PMID: 27300034 DOI: 10.1007/s40618-016-0499-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 06/06/2016] [Indexed: 01/27/2023]
Abstract
PURPOSE The study was aimed at investigating the association between hsa-mir-27a polymorphism rs895819 (T/C) and type 2 diabetes mellitus (T2DM) susceptibility in a large Iranian cohort. METHODS In this case-control study, the investigated population consisted of T2DM patients (n = 204) and sex- and age-matched controls (n = 209). We used the polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) for genotyping. RESULTS We observed significant differences between T2DM patients and controls for weight (p = 0.002), BMI (p < 0.001), systolic blood pressure (p < 0.001), diastolic blood pressure (p < 0.001), fasting plasma glucose (p < 0.001), triglyceride (p = 0.004) and LDL cholesterol (p = 0.051). Moreover, we found that genotype distributions were significantly different between groups (p < 0.05) and that the rs895819-C allele is more frequent in controls (p = 0.030, OR = 0.72, 95 % CI 0.53-0.97). CONCLUSION Our study shows that rs895819 in hsa-mir-27a is associated with T2DM susceptibility and that the C allele conveyed a protective role against T2DM. Larger multicentric and specific functional studies will be necessary to obtain a deeper comprehension of the role of rs895819 and hsa-mir-27a and how they are involved in the development of diabetes.
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Affiliation(s)
- H Ghaedi
- Medical Genetics Department, School of Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M Tabasinezhad
- Medical Biotechnology Department, Pasteur Institute of Iran, Tehran, Iran
| | - B Alipoor
- Clinical Biochemistry Department, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - F Shokri
- Medical Genetics Department, School of Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - A Movafagh
- Medical Genetics Department, School of Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - R Mirfakhraie
- Medical Genetics Department, School of Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M D Omrani
- Medical Genetics Department, School of Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - A Masotti
- Gene Expression - Microarrays Laboratory, Bambino Gesù Children's Hospital-IRCCS, Viale di San Paolo 15, 00146, Rome, Italy.
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Torkamandi S, Bastami M, Ghaedi H, Moghadam F, Mirfakhraie R, Omrani MD. MAP3K1 May be a Promising Susceptibility Gene for Type 2 Diabetes Mellitus in an Iranian Population. INTERNATIONAL JOURNAL OF MOLECULAR AND CELLULAR MEDICINE 2016; 5:134-140. [PMID: 27942499 PMCID: PMC5125365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 07/02/2016] [Indexed: 11/11/2022]
Abstract
Considering that MAPK (mitogen- activated protein kinase) signaling pathway has an important role in the progression of inflammatory cytokine secretion in type 2 diabetes mellitus (T2DM), we have recently investigated the reported genetic polymorphism from genome wide association study in MAP3K1 (mitogen-activated protein kinase kinase kinase 1) in diabetes as an important member of MAPK signaling. This study aimed to investigate the possible association of rs10461617 at the upstream of MAP3K1 gene in an Iranian case-control study with the risk of T2DM. The study population was comprised of 342 unrelated Iranian individuals including 177 patients with T2DM and 165 unrelated healthy control subjects. Genotyping was performed using PCR-RFLP and confirmed with sequencing. In a logistic regression analysis, the rs10461617A allele was associated with a significantly higher risk of T2DM assuming the log- additive model (OR: 1.44, 95% CI: 1.01-2.05, P = 0.039). In conclusion, we provided the first evidence for the association of rs10461617 at the upstream of MAP3K1 with the risk of T2DM in an Iranian population.
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Affiliation(s)
- Shahram Torkamandi
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Milad Bastami
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Hamid Ghaedi
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Fateme Moghadam
- Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Reza Mirfakhraie
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mir Davood Omrani
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Zia A, Wang X, Bhatti A, Demirci FY, Zhao W, Rasheed A, Samuel M, Kiani AK, Ismail M, Zafar J, John P, Saleheen D, Kamboh MI. A replication study of 49 Type 2 diabetes risk variants in a Punjabi Pakistani population. Diabet Med 2016; 33:1112-7. [PMID: 26499911 DOI: 10.1111/dme.13012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 08/03/2015] [Accepted: 10/21/2015] [Indexed: 12/28/2022]
Abstract
AIM The burden of Type 2 diabetes is alarmingly high in South Asia, a region that has many genetically diverse ethnic populations. Genome-wide association studies (GWAS) conducted largely in European populations have identified a number of loci predisposing to Type 2 diabetes risk, however, the relevance of such genetic loci in many South Asian sub-ethnicities remains elusive. The aim of this study was to replicate 49 single nucleotide polymorphisms (SNPs) previously identified through GWAS in Punjabis living in Pakistan. METHODS We examined the association of 49 SNPs in 853 Type 2 diabetes cases and 1945 controls using additive logistic regression models after adjusting for age and gender. RESULTS Of the 49 SNPs investigated, eight showed a nominal association (P < 0.05) that also remained significant after controlling for the false discovery rate. The most significant association was found for rs7903146 at the TCF7L2 locus. For a per unit increase in the risk score comprising of all the 49 SNPs, the odds ratio in association with Type 2 diabetes risk was 1.16 (95% CI 1.13-1.19, P < 2.0E-16). CONCLUSION These results suggest that some Type 2 diabetes susceptibility loci are shared between Europeans and Punjabis living in Pakistan.
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Affiliation(s)
- A Zia
- Atta-Ur-Rahman School of Applied Biosciences (ASAB), National University of Science and Technology (NUST), Islamabad, Pakistan
| | - X Wang
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, USA
| | - A Bhatti
- Atta-Ur-Rahman School of Applied Biosciences (ASAB), National University of Science and Technology (NUST), Islamabad, Pakistan
| | - F Y Demirci
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, USA
| | - W Zhao
- Institute of Translational Medicine and Human Genetics, Department of Medicine, University of Pennsylvania, Philadelphia, USA
| | - A Rasheed
- Center for Non-Communicable Diseases, Karachi, Pakistan
| | - M Samuel
- Center for Non-Communicable Diseases, Karachi, Pakistan
| | - A K Kiani
- Atta-Ur-Rahman School of Applied Biosciences (ASAB), National University of Science and Technology (NUST), Islamabad, Pakistan
| | - M Ismail
- Institute of Biomedical and Genetic Engineering (IBGE), Islamabad, Pakistan
| | - J Zafar
- Pakistan Institute of Medical Sciences (PIMS), Islamabad, Pakistan
| | - P John
- Atta-Ur-Rahman School of Applied Biosciences (ASAB), National University of Science and Technology (NUST), Islamabad, Pakistan
| | - D Saleheen
- Institute of Translational Medicine and Human Genetics, Department of Medicine, University of Pennsylvania, Philadelphia, USA
- Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, USA
| | - M I Kamboh
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, USA
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Avzaletdinova DS, Sharipova LF, Kochetova OV, Morugova TV, Erdman VV, Mustafina OE. Association of variable rs1801282 locus of PPARG2 gene with diabetic nephropathy. RUSS J GENET+ 2016. [DOI: 10.1134/s1022795416080032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Type 2 Diabetes Risk Allele Loci in the Qatari Population. PLoS One 2016; 11:e0156834. [PMID: 27383215 PMCID: PMC4934876 DOI: 10.1371/journal.pone.0156834] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/22/2016] [Indexed: 12/22/2022] Open
Abstract
Background The prevalence of type 2 diabetes (T2D) is increasing in the Middle East. However, the genetic risk factors for T2D in the Middle Eastern populations are not known, as the majority of studies of genetic risk for T2D are in Europeans and Asians. Methods All subjects were ≥3 generation Qataris. Cases with T2D (n = 1,124) and controls (n = 590) were randomly recruited and assigned to the 3 known Qatari genetic subpopulations [Bedouin (Q1), Persian/South Asian (Q2) and African (Q3)]. Subjects underwent genotyping for 37 single nucleotide polymorphisms (SNPs) in 29 genes known to be associated with T2D in Europeans and/or Asian populations, and an additional 27 tag SNPs related to these susceptibility loci. Pre-study power analysis suggested that with the known incidence of T2D in adult Qataris (22%), the study population size would be sufficient to detect significant differences if the SNPs were risk factors among Qataris, assuming that the odds ratio (OR) for T2D SNPs in Qatari’s is greater than or equal to the SNP with highest known OR in other populations. Results Haplotype analysis demonstrated that Qatari haplotypes in the region of known T2D risk alleles in Q1 and Q2 genetic subpopulations were similar to European haplotypes. After Benjamini-Hochberg adjustment for multiple testing, only two SNPs (rs7903146 and rs4506565), both associated with transcription factor 7-like 2 (TCF7L2), achieved statistical significance in the whole study population. When T2D subjects and control subjects were assigned to the known 3 Qatari subpopulations, and analyzed individually and with the Q1 and Q2 genetic subpopulations combined, one of these SNPs (rs4506565) was also significant in the admixed group. No other SNPs associated with T2D in all Qataris or individual genetic subpopulations. Conclusions With the caveats of the power analysis, the European/Asian T2D SNPs do not contribute significantly to the high prevalence of T2D in the Qatari population, suggesting that the genetic risks for T2D are likely different in Qataris compared to Europeans and Asians.
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Morris MR, Ludwar BC, Swingle E, Mamo MN, Shubrook JH. A New Method to Assess Asymmetry in Fingerprints Could Be Used as an Early Indicator of Type 2 Diabetes Mellitus. J Diabetes Sci Technol 2016; 10:864-71. [PMID: 26830490 PMCID: PMC4928221 DOI: 10.1177/1932296816629984] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Inexpensive screening tools are needed to identify individuals predisposed to developing diabetes mellitus (DM). Such early identification coupled with an effective intervention could help many people avoid the substantial health costs of this disease. We investigated the hypothesis that fluctuating asymmetry (FA) in fingerprints is an indicator of type 2 diabetes mellitus (T2DM). METHODS Participants with T2DM, with T1DM, and without any indication or known family history of diabetes were fingerprinted with a Crossmatch Verifier 320 LC scanner. Asymmetry scores for each finger pair were assessed using both pattern analysis (ridge counts), and a wavelet-based analysis. RESULTS Both methods for scoring asymmetry predicted risk of T2DM for finger pair IV, controlling for gender and age. AUC scores were significantly greater than the null for pattern asymmetry scores (finger IV AUC = 0.74), and wavelet asymmetry scores for finger pair IV (AUC = 0.73) and finger pair V (AUC = 0.73), for predicting T2DM. In addition, wavelet asymmetry scores for finger pair IV (AUC = 0.80) and finger pair V (AUC = 0.85) significantly predicted risk of T1DM. CONCLUSIONS A diagnostic tool based on FA in the fingerprints of finger pair IV, measured using a wavelet analysis could be developed for predicting risk prior to associated health problems for both T2DM and T1DM. In addition, given that that the prints for fingers IV and V develop during the 14-17 weeks of gestation, we predict that interventions during this time period of pregnancy will be most successful.
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Affiliation(s)
- Molly R Morris
- Department of Biological Sciences, Ohio University, Athens, OH, USA
| | | | - Evan Swingle
- Department of Biological Sciences, Ohio University, Athens, OH, USA
| | | | - Jay H Shubrook
- College of Osteopathic Medicine, Touro University California, Vallejo, CA, USA
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Phani NM, Adhikari P, Nagri SK, D’Souza SC, Satyamoorthy K, Rai PS. Replication and Relevance of Multiple Susceptibility Loci Discovered from Genome Wide Association Studies for Type 2 Diabetes in an Indian Population. PLoS One 2016; 11:e0157364. [PMID: 27310578 PMCID: PMC4911058 DOI: 10.1371/journal.pone.0157364] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 05/27/2016] [Indexed: 12/13/2022] Open
Abstract
Aim Several genetic variants for type 2 diabetes (T2D) have been identified through genome wide association studies (GWAS) from Caucasian population; however replication studies were not consistent across various ethnicities. Objective of the current study is to examine the possible correlation of 9 most significant GWAS single nucleotide polymorphisms (SNPs) for T2D susceptibility as well as the interactive effect of these variants on the risk of T2D in an Indian population. Methods Case-control cohorts of 1156 individuals were genotyped for 9 SNPs from an Indian population. Association analyses were performed using logistic regression after adjusting for covariates. Multifactor dimensionality reduction (MDR) analysis was adopted to determine gene–gene interactions and discriminatory power of combined SNP effect was assessed by grouping individuals based on the number of risk alleles and by calculating area under the receiver-operator characteristic curve (AUC). Results We confirm the association of TCF7L2 (rs7903146) and SLC30A8 (rs13266634) with T2D. MDR analysis showed statistically significant interactions among four SNPs of SLC30A8 (rs13266634), IGF2BP2 (rs4402960), HHEX (rs1111875) and CDKN2A (rs10811661) genes. Cumulative analysis showed an increase in odds ratio against the baseline group of individuals carrying 5 to 6 risk alleles and discriminatory power of genetic test based on 9 variants showed higher AUC value when analyzed along with body mass index (BMI). Conclusion These results provide a strong evidence for independent association between T2D and SNPs for in TCF7L2 and SLC30A8. MDR analysis demonstrates that independently non-significant variants may interact with one another resulting in increased disease susceptibility in the population tested.
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Affiliation(s)
- Nagaraja M. Phani
- Department of Biotechnology, School of Life Sciences, Manipal University, Manipal-576104, Karnataka, India
| | - Prabha Adhikari
- Department of Medicine, Kasturba Medical College, Manipal University, Mangalore-575001, Karnataka, India
| | - Shivashankara K. Nagri
- Department of Medicine, Kasturba Medical College, Manipal University, Manipal-576104, Karnataka, India
| | - Sydney C. D’Souza
- Department of Medicine, Kasturba Medical College, Manipal University, Mangalore-575001, Karnataka, India
| | - Kapaettu Satyamoorthy
- Department of Biotechnology, School of Life Sciences, Manipal University, Manipal-576104, Karnataka, India
| | - Padmalatha S. Rai
- Department of Biotechnology, School of Life Sciences, Manipal University, Manipal-576104, Karnataka, India
- * E-mail:
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Karanth S, Zinkhan EK, Hill JT, Yost HJ, Schlegel A. FOXN3 Regulates Hepatic Glucose Utilization. Cell Rep 2016; 15:2745-55. [PMID: 27292639 DOI: 10.1016/j.celrep.2016.05.056] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 04/27/2016] [Accepted: 05/13/2016] [Indexed: 12/17/2022] Open
Abstract
A SNP (rs8004664) in the first intron of the FOXN3 gene is associated with human fasting blood glucose. We find that carriers of the risk allele have higher hepatic expression of the transcriptional repressor FOXN3. Rat Foxn3 protein and zebrafish foxn3 transcripts are downregulated during fasting, a process recapitulated in human HepG2 hepatoma cells. Transgenic overexpression of zebrafish foxn3 or human FOXN3 increases zebrafish hepatic gluconeogenic gene expression, whole-larval free glucose, and adult fasting blood glucose and also decreases expression of glycolytic genes. Hepatic FOXN3 overexpression suppresses expression of mycb, whose ortholog MYC is known to directly stimulate expression of glucose-utilization enzymes. Carriers of the rs8004664 risk allele have decreased MYC transcript abundance. Human FOXN3 binds DNA sequences in the human MYC and zebrafish mycb loci. We conclude that the rs8004664 risk allele drives excessive expression of FOXN3 during fasting and that FOXN3 regulates fasting blood glucose.
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Affiliation(s)
- Santhosh Karanth
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT 84112, USA; Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | - Erin K Zinkhan
- Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT 84108, USA
| | - Jonathon T Hill
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT 84112, USA; Department of Neurobiology and Anatomy, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - H Joseph Yost
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT 84112, USA; Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT 84108, USA; Department of Neurobiology and Anatomy, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Amnon Schlegel
- University of Utah Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT 84112, USA; Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84112, USA; Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112, USA.
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