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Association between functional genetic variants in retinoid X receptor-α/γ and the risk of gestational diabetes mellitus in a southern Chinese population. Biosci Rep 2021; 41:229913. [PMID: 34633445 PMCID: PMC8529336 DOI: 10.1042/bsr20211338] [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: 06/02/2021] [Revised: 09/23/2021] [Accepted: 10/07/2021] [Indexed: 12/28/2022] Open
Abstract
To clarify the effect of retinoid X receptor-α/γ (RXR-α/γ) genes functional genetic variants (RXR-α rs4842194 G>A, RXR-γ rs100537 A>G and rs2134095 T>C) on the risk of gestational diabetes mellitus (GDM), a case–control study with 573 GDM patients and 740 pregnant women with normal glucose tolerance was performed in Guangxi area of China. An odds ratio (OR) with its corresponding 95% confidence interval (CI) was used to assess the strengths of the association between genetic variation and GDM. After adjustment of age and pre-BMI, the logistic regression analysis showed that the rs2134095 was significantly associated with GDM risk (CC vs. TT/TC: adjusted OR = 0.71, 95% CI = 0.56–0.90) in all subjects, and this result remained highly significant after Bonferroni’s correction for multiple testing (P=0.004). The stratified analysis showed that rs2134095 was significantly associated with the risk of GDM among age > 30 years (adjusted OR = 0.61, 95% CI = 0.39–0.97), BMI > 22 kg/m2 (adjusted OR = 0.46, 95% CI = 0.30–0.70), systolic blood pressure (SBP) > 120 mmHg (adjusted OR = 1.96, 95% CI = 1.14–3.36), glycosylated hemoglobin A1c (HbA1c) < 6.5% (adjusted OR = 1.41, 95% CI = 1.11–1.78), TG ≤ 1.7 mmol/l (adjusted OR = 2.57, 95% CI = 1.45–4.53), TC ≤ 5.18 mmol/l (adjusted OR = 1.58, 95% CI = 1.13–2.22), high-density lipoprotein cholesterol (HDL-c) ≤ 1.5 mmol/l (adjusted OR = 1.70, 95% CI = 1.16–2.49) and low-density lipoprotein cholesterol (LDL-c) > 3.12 mmol/l (adjusted OR = 1.47, 95% CI = 1.08–2.00) subjects, under the recessive genetic model. We also found that rs2134095 interacted with age (Pinteraction=0.039), pre-BMI (Pinteraction=0.040) and TG (Pinteraction=0.025) influencing individual’s genetic susceptibility to GDM. The rs2134095 T>C is significantly associated with the risk of GDM by effect of a single locus and/or complex joint gene–gene and gene–environment interactions. Larger sample-size and different population studies are required to confirm the findings.
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RXR – centralny regulator wielu ścieżek sygnałowych w organizmie. POSTEP HIG MED DOSW 2021. [DOI: 10.2478/ahem-2021-0005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstrakt
Receptory jądrowe (NRs) tworzą największą nadrodzinę czynników transkrypcyjnych, które odgrywają ważną rolę w regulacji wielu procesów biologicznych. Receptor kwasu 9-cis-retinowego (RXR) wydaje się odgrywać szczególną rolę wśród tej grupy białek, a to ma związek z jego zdolnością do tworzenia dimerów z innymi NRs. Ze względu na kontrolę ekspresji wielu genów, RXR stanowi bardzo dobry cel licznych terapii. Nieprawidłowości w szlakach modulowanych przez RXR są powiązane m.in. z chorobami neurodegeneracyjnymi, otyłością, cukrzycą, a także nowotworami. Istnieje wiele związków mogących regulować aktywność transkrypcyjną RXR. Jednak obecnie dopuszczonych do użytku klinicznego jest tylko kilka z nich. Retinoidy normalizują wzrost i różnicowanie komórek skóry i błon śluzowych, ponadto działają immunomodulująco oraz przeciwzapalnie. Stąd są stosowane przede wszystkim w chorobach skóry i w terapii niektórych chorób nowotworowych. W artykule przedstawiono ogólne wiadomości na temat RXR, jego budowy, ligandów i mechanizmu działania oraz potencjalnej roli w terapii nowotworów i zespołu metabolicznego.
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Orozco LD, Farrell C, Hale C, Rubbi L, Rinaldi A, Civelek M, Pan C, Lam L, Montoya D, Edillor C, Seldin M, Boehnke M, Mohlke KL, Jacobsen S, Kuusisto J, Laakso M, Lusis AJ, Pellegrini M. Epigenome-wide association in adipose tissue from the METSIM cohort. Hum Mol Genet 2019; 27:1830-1846. [PMID: 29566149 DOI: 10.1093/hmg/ddy093] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 03/12/2018] [Indexed: 12/16/2022] Open
Abstract
Most epigenome-wide association studies to date have been conducted in blood. However, metabolic syndrome is mediated by a dysregulation of adiposity and therefore it is critical to study adipose tissue in order to understand the effects of this syndrome on epigenomes. To determine if natural variation in DNA methylation was associated with metabolic syndrome traits, we profiled global methylation levels in subcutaneous abdominal adipose tissue. We measured association between 32 clinical traits related to diabetes and obesity in 201 people from the Metabolic Syndrome in Men cohort. We performed epigenome-wide association studies between DNA methylation levels and traits, and identified associations for 13 clinical traits in 21 loci. We prioritized candidate genes in these loci using expression quantitative trait loci, and identified 18 high confidence candidate genes, including known and novel genes associated with diabetes and obesity traits. Using methylation deconvolution, we examined which cell types may be mediating the associations, and concluded that most of the loci we identified were specific to adipocytes. We determined whether the abundance of cell types varies with metabolic traits, and found that macrophages increased in abundance with the severity of metabolic syndrome traits. Finally, we developed a DNA methylation-based biomarker to assess type 2 diabetes risk in adipose tissue. In conclusion, our results demonstrate that profiling DNA methylation in adipose tissue is a powerful tool for understanding the molecular effects of metabolic syndrome on adipose tissue, and can be used in conjunction with traditional genetic analyses to further characterize this disorder.
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Affiliation(s)
- Luz D Orozco
- Department of Molecular, Cell and Developmental Biology, University of California Los Angeles
| | - Colin Farrell
- Department of Molecular, Cell and Developmental Biology, University of California Los Angeles
| | - Christopher Hale
- Department of Molecular, Cell and Developmental Biology, University of California Los Angeles
| | - Liudmilla Rubbi
- Department of Molecular, Cell and Developmental Biology, University of California Los Angeles
| | - Arturo Rinaldi
- Department of Molecular, Cell and Developmental Biology, University of California Los Angeles
| | - Mete Civelek
- Departments of Human Genetics, Medicine, and Microbiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Calvin Pan
- Departments of Human Genetics, Medicine, and Microbiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Larry Lam
- Department of Molecular, Cell and Developmental Biology, University of California Los Angeles
| | - Dennis Montoya
- Department of Molecular, Cell and Developmental Biology, University of California Los Angeles
| | - Chantle Edillor
- Departments of Human Genetics, Medicine, and Microbiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Marcus Seldin
- Departments of Human Genetics, Medicine, and Microbiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Michael Boehnke
- Department of Biostatistics and Center for Statistical Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Karen L Mohlke
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Steve Jacobsen
- Department of Molecular, Cell and Developmental Biology, University of California Los Angeles.,Eli & Edythe Broad Center of Regenerative Medicine & Stem Cell Research, University of California Los Angeles, Los Angeles, CA 90095, USA.,Howard Hughes Medical Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Johanna Kuusisto
- Institute of Clinical Medicine, Internal Medicine, University of Eastern Finland and Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
| | - Markku Laakso
- Institute of Clinical Medicine, Internal Medicine, University of Eastern Finland and Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
| | - Aldons J Lusis
- Departments of Human Genetics, Medicine, and Microbiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Matteo Pellegrini
- Department of Molecular, Cell and Developmental Biology, University of California Los Angeles.,Eli & Edythe Broad Center of Regenerative Medicine & Stem Cell Research, University of California Los Angeles, Los Angeles, CA 90095, USA
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Hiebl V, Ladurner A, Latkolik S, Dirsch VM. Natural products as modulators of the nuclear receptors and metabolic sensors LXR, FXR and RXR. Biotechnol Adv 2018; 36:1657-1698. [PMID: 29548878 DOI: 10.1016/j.biotechadv.2018.03.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 03/02/2018] [Accepted: 03/08/2018] [Indexed: 01/25/2023]
Abstract
Nuclear receptors (NRs) represent attractive targets for the treatment of metabolic syndrome-related diseases. In addition, natural products are an interesting pool of potential ligands since they have been refined under evolutionary pressure to interact with proteins or other biological targets. This review aims to briefly summarize current basic knowledge regarding the liver X (LXR) and farnesoid X receptors (FXR) that form permissive heterodimers with retinoid X receptors (RXR). Natural product-based ligands for these receptors are summarized and the potential of LXR, FXR and RXR as targets in precision medicine is discussed.
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Affiliation(s)
- Verena Hiebl
- University of Vienna, Department of Pharmacognosy, Althanstrasse 14, 1090 Vienna, Austria
| | - Angela Ladurner
- University of Vienna, Department of Pharmacognosy, Althanstrasse 14, 1090 Vienna, Austria.
| | - Simone Latkolik
- University of Vienna, Department of Pharmacognosy, Althanstrasse 14, 1090 Vienna, Austria
| | - Verena M Dirsch
- University of Vienna, Department of Pharmacognosy, Althanstrasse 14, 1090 Vienna, Austria
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Impact of Genetic Variants on the Individual Potential for Body Fat Loss. Nutrients 2018; 10:nu10030266. [PMID: 29495392 PMCID: PMC5872684 DOI: 10.3390/nu10030266] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 02/09/2018] [Accepted: 02/23/2018] [Indexed: 12/21/2022] Open
Abstract
The past decade has witnessed the discovery of obesity-related genetic variants and their functions through genome-wide association studies. Combinations of risk alleles can influence obesity phenotypes with different degrees of effectiveness across various individuals by interacting with environmental factors. We examined the interaction between genetic variation and changes in dietary habits or exercise that influences body fat loss from a large Korean cohort (n = 8840). Out of 673 obesity-related SNPs, a total of 100 SNPs (37 for carbohydrate intake; 19 for fat intake; 44 for total calories intake; 25 for exercise onset) identified to have gene-environment interaction effect in generalized linear model were used to calculate genetic risk scores (GRS). Based on the GRS distribution, we divided the population into four levels, namely, “very insensitive”, “insensitive”, “sensitive”, and “very sensitive” for each of the four categories, “carbohydrate intake”, “fat intake”, “total calories intake”, and “exercise”. Overall, the mean body fat loss became larger when the sensitivity level was increased. In conclusion, genetic variants influence the effectiveness of dietary regimes for body fat loss. Based on our findings, we suggest a platform for personalized body fat management by providing the most suitable and effective nutrition or activity plan specific to an individual.
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Liu Y, Wan W, Fang F, Guo L, Zhao Y, Zhang X, Huang F. Clinical relevance of peroxisome proliferator-activated receptor-γ gene polymorphisms with sepsis. J Clin Lab Anal 2017; 32:e22340. [PMID: 29055064 DOI: 10.1002/jcla.22340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/10/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Peroxisome proliferator-activated receptor-γ (PPARγ) is a regulator of inflammation. This study aimed to explore associations between PPARγ gene single-nucleotide polymorphisms (SNPs) and susceptibility to and clinical outcome of sepsis in the North China Han population. METHODS This study included 303 patients with sepsis and 303 controls. We conducted genetic typing for 13 common PPARγ gene SNPs (improved multiplex ligation detection reaction), linkage disequilibrium mapping, and haplotype inference. Associations between SNP genotypes/haplotypes and sepsis susceptibility and outcome (septic shock, organ dysfunction, or death) were assessed using unconditional logistic regression analysis. RESULTS For rs2972164, patients with genotypes CT/CT+TT had higher risk of sepsis than genotype CC (odds ratio [95% CI]: 1.74 [1.05-2.86], P = .03 and 1.72 [1.06-2.80], P = .026, respectively); the T allele was associated with increased sepsis risk compared with the C allele (1.64 [1.04-2.58], P = .033). For rs1801282, genotypes CG/CG+GG had lower risk of sepsis than genotype CC (0.55 [0.33-0.92], P = .024 and 0.57 [0.35-0.95], P = .03, respectively); the G allele was associated with decreased sepsis risk compared with the C allele (0.62 [0.39-1.01], P = .055). For rs4135275, genotypes AG/AG+GG had higher risk of severe organ dysfunction (multiple organ dysfunction syndrome score >8) than genotype AA (2.66 [1.16-6.09], P = .038 and 2.21 [1.00-4.85], P = .042, respectively). Haplotype TAT (rs2972164, rs4684846, and rs17036188) was associated with increased sepsis risk (1.66 [1.03-2.67], P = .038). CONCLUSIONS No mutation was correlated with septic shock or death. PPARγ gene polymorphisms may play a role in the occurrence and progression of sepsis in the North China Han population.
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Affiliation(s)
- Yu Liu
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Wenhui Wan
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Fang Fang
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Lei Guo
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Yusheng Zhao
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Xinghu Zhang
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Fang Huang
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
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Chen CH, Fabian C, Hursting S, deGraffenried LA. Breast Cancer Genetic and Molecular Subtype Impacts Response to Omega-3 Fatty Acid Ethyl Esters. Nutr Cancer 2016; 68:1021-33. [PMID: 27367296 DOI: 10.1080/01635581.2016.1192199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Epidemiological studies have correlated frequent omega-3 (n-3) fatty acid consumption with a lower risk for breast cancer; however, recent prospective studies have been less conclusive. Efforts in the preventive setting have focused on the use of n-3 fatty acids, and the pharmaceutical ethyl esters (EE) of these natural compounds, for high-risk patient populations. Limited understanding of specific mechanisms by which these agents function has hampered identification of the cancer subtype(s) that would gain the greatest therapeutic benefit. In this study, we investigated the in vitro effects of n-3 EEs in four distinct breast cancer subtypes and explored how they affect not only breast cancer cell survival but also modulate the nuclear factor kappa-light-chain enhancer of activated B cells (NF-κB) and peroxisome proliferator-activated receptor gamma signaling pathways. Similar to the high variance in response observed in human studies, we found that the effectiveness of n-3 EEs depends on the molecular characteristics of the MCF-7, CAMA-1, MDA-MB-231, and SKBR3 breast cancer cell lines and is closely associated with the suppression of NF-κB. These data strongly suggest that the use of n-3 fatty acids and their pharmaceutical ether esters in the prevention and therapeutic setting should be guided by specific tumor characteristics.
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Affiliation(s)
- Ching Hui Chen
- a Department of Nutritional Sciences , The University of Texas at Austin , Texas , USA
| | - Carol Fabian
- b Department of Internal Medicine , University of Kansas Medical Center , Kansas City , Kansas , USA
| | - Stephen Hursting
- c Department of Nutrition , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina , USA
| | - Linda A deGraffenried
- a Department of Nutritional Sciences , The University of Texas at Austin , Texas , USA
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Kong X, Zhang X, Xing X, Zhang B, Hong J, Yang W. The Association of Type 2 Diabetes Loci Identified in Genome-Wide Association Studies with Metabolic Syndrome and Its Components in a Chinese Population with Type 2 Diabetes. PLoS One 2015; 10:e0143607. [PMID: 26599349 PMCID: PMC4657988 DOI: 10.1371/journal.pone.0143607] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 11/06/2015] [Indexed: 12/19/2022] Open
Abstract
Metabolic syndrome (MetS) is prevalent in type 2 diabetes (T2D) patients. The comorbidity of MetS and T2D increases the risk of cardiovascular complications. The aim of the present study was to determine the T2D-related genetic variants that contribute to MetS-related components in T2D patients of Chinese ancestry. We successfully genotyped 25 genome wide association study validated T2D-related single nucleotide polymorphisms (SNPs) among 5,169 T2D individuals and 4,560 normal glycemic controls recruited from the Chinese National Diabetes and Metabolic Disorders Study (DMS). We defined MetS in this population using the harmonized criteria (2009) combined with the Chinese criteria for abdominal obesity. The associations between SNPs and MetS-related components, as well as the associations between SNPs and risk for T2D with or without MetS, were subjected to logistic regression analysis adjusted for age and sex. Results showed that the T2D risk alleles of rs243021 located near BCL11A, rs10830963 in MTNR1B, and rs2237895 in KCNQ1 were related to a lower risk for abdominal obesity in T2D patients (rs243021: 0.92 (0.84, 1.00), P = 4.42 × 10−2; rs10830963: 0.92 (0.85, 1.00), P = 4.07 × 10−2; rs2237895: 0.89 (0.82, 0.98), P = 1.29 × 10−2). The T2D risk alleles of rs972283 near KLF14 contributed to a higher risk of elevated blood pressure (1.10 (1.00, 1.22), P = 4.48 × 10−2), while the T2D risk allele of rs7903146 in TCF7L2 was related to a lower risk for elevated blood pressure (0.74 (0.61, 0.90), P = 2.56 × 10−3). The T2D risk alleles of rs972283 near KLF14 and rs11634397 near ZFAND6 were associated with a higher risk for elevated triglycerides (rs972283: 1.11 (1.02, 1.24), P = 1.46 × 10−2; rs11634397: 1.14 (1.00, 1.29), P = 4.66 × 10−2), while the T2D risk alleles of rs780094 in GCKR and rs7903146 in TCF7L2 were related to a lower risk of elevated triglycerides (rs780094: 0.86 (0.80, 0.93), P = 1.35 × 10−4; rs7903146: 0.82 (0.69, 0.98), P = 3.18 × 10−2). The genotype risk score of the 25 T2D-related SNPs was related to a lower risk for abdominal obesity (Ptrend = 1.29 × 10−2) and lower waist circumference (P = 2.20 × 10−3). Genetic variants of WFS1, CDKAL1, CDKN2BAS, TCF7L2, HHEX, KCNQ1, TSPAN8/LGR5, FTO, and TCF2 were associated with the risk for T2D with MetS, as well as the risk for development of T2D with at least one of the MetS components (P < 0.05). In addition, genetic variants of BCL11A, GCKR, ADAMTS9, CDKAL1, KLF14, CDKN2BAS, TCF7L2, CDC123/CAMK1D, HHEX, MTNR1B, and KCNQ1 contributed to the risk for T2D without MetS (P < 0.05). In conclusion, these findings highlight the contribution of T2D-related genetic loci to MetS in a Chinese Han population. The study also provides insight into the pleotropic effects of genome-wide association loci of diabetes on metabolic regulation.
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Affiliation(s)
- Xiaomu Kong
- Department of Endocrinology, China-Japan Friendship Hospital, Beijing, China
| | - Xuelian Zhang
- Department of Endocrinology, China-Japan Friendship Hospital, Beijing, China
| | - Xiaoyan Xing
- Department of Endocrinology, China-Japan Friendship Hospital, Beijing, China
| | - Bo Zhang
- Department of Endocrinology, China-Japan Friendship Hospital, Beijing, China
| | - Jing Hong
- Department of Endocrinology, China-Japan Friendship Hospital, Beijing, China
| | - Wenying Yang
- Department of Endocrinology, China-Japan Friendship Hospital, Beijing, China
- * E-mail:
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Incremental sequential pattern mining algorithms of Web site access in grid structure database. Neural Comput Appl 2015. [DOI: 10.1007/s00521-015-2096-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Chia PP, Fan SH, Say YH. Screening of Peroxisome Proliferator-Activated Receptors (PPARs) α, γ and α Gene Polymorphisms for Obesity and Metabolic Syndrome Association in the Multi-Ethnic Malaysian Population. Ethn Dis 2015; 25:383-90. [PMID: 26673968 DOI: 10.18865/ed.25.4.383] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
OBJECTIVE This study aimed to investigate the association of peroxisome proliferator-activated receptor (PPAR) genes PPARα L162V, PPARγ2 C161T and PPARδ T294C single nucleotide polymorphisms (SNPs) with obesity and metabolic syndrome (Met-S) in a multi-ethnic population in Kampar, Malaysia. METHODS Socio-demographic data, anthropometric and biochemical measurements (plasma lipid profile, adiponectin and interleukin-6 [IL-6] levels) were taken from 307 participants (124 males; 180 obese; 249 Met-S; 97 Malays, 85 ethnic Chinese, 55 ethnic Indians). RESULTS The overall minor allele frequencies were .08, .22 and .30 for PPAR α L162V, γ C161T, δ T294C, respectively. All SNPs were not associated with obesity, Met-S and obesity with/without Met-S by χ(2) analysis, ethnicity-stratified and logistic regression analyses. Nevertheless, participants with V162 allele of PPARα had significantly higher IL-6, while those with T161 allele of PPARγ2 had significantly lower HOMA-IR. CONCLUSIONS All PPAR SNPs were not associated with obesity and Met-S in the suburban population of Kampar, Malaysia, where only PPARα V162 and PPARγ2 T161 alleles were associated with plasma IL-6 and HOMA-IR, respectively.
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Affiliation(s)
- Phee-Phee Chia
- 1. Department of Science and Engineering, Centre for Foundation Studies, Universiti Tunku Abdul Rahman (UTAR) Perak Campus, Kampar, Perak, Malaysia
| | - Sook-Ha Fan
- 2. Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman (UTAR) Perak Campus, Kampar, Perak, Malaysia
| | - Yee-How Say
- 2. Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman (UTAR) Perak Campus, Kampar, Perak, Malaysia
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Bouchard-Mercier A, Rudkowska I, Lemieux S, Couture P, Vohl MC. Polymorphisms in genes involved in fatty acid β-oxidation interact with dietary fat intakes to modulate the plasma TG response to a fish oil supplementation. Nutrients 2014; 6:1145-63. [PMID: 24647074 PMCID: PMC3967183 DOI: 10.3390/nu6031145] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 02/13/2014] [Accepted: 02/24/2014] [Indexed: 12/24/2022] Open
Abstract
A large inter-individual variability in the plasma triglyceride (TG) response to an omega-3 polyunsaturated fatty acid (n-3 PUFA) supplementation has been observed. The objective was to examine gene-diet interaction effects on the plasma TG response after a fish oil supplementation, between single-nucleotide polymorphisms (SNPs) within genes involved in fatty acid β-oxidation and dietary fat intakes. Two hundred and eight (208) participants were recruited in the greater Quebec City area. The participants completed a six-week fish oil supplementation (5 g fish oil/day: 1.9–2.2 g EPA and 1.1 g DHA). Dietary fat intakes were measured using three-day food records. SNPs within RXRA, CPT1A, ACADVL, ACAA2, ABCD2, ACOX1 and ACAA1 genes were genotyped using TAQMAN methodology. Gene-diet interaction effects on the plasma TG response were observed for SNPs within RXRA (rs11185660, rs10881576 and rs12339187) and ACOX1 (rs17583163) genes. For rs11185660, fold changes in RXRA gene expression levels were different depending on SFA intakes for homozygotes T/T. Gene-diet interaction effects of SNPs within genes involved in fatty acid β-oxidation and dietary fat intakes may be important in understanding the inter-individual variability in plasma TG levels and in the plasma TG response to a fish oil supplementation.
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Affiliation(s)
- Annie Bouchard-Mercier
- Institute of Nutrition and Functional Foods (INAF), Laval University, 2440 Hochelaga Blvd., Quebec, QC, G1V 0A6, Canada.
| | - Iwona Rudkowska
- Endocrinology and Nephrology, CHU de Quebec Research Center, 2705 Laurier Blvd., Quebec, QC, G1V 4G2, Canada.
| | - Simone Lemieux
- Institute of Nutrition and Functional Foods (INAF), Laval University, 2440 Hochelaga Blvd., Quebec, QC, G1V 0A6, Canada.
| | - Patrick Couture
- Institute of Nutrition and Functional Foods (INAF), Laval University, 2440 Hochelaga Blvd., Quebec, QC, G1V 0A6, Canada.
| | - Marie-Claude Vohl
- Institute of Nutrition and Functional Foods (INAF), Laval University, 2440 Hochelaga Blvd., Quebec, QC, G1V 0A6, Canada.
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Rooki H, Haerian MS, Azimzadeh P, Mirhafez R, Ebrahimi M, Ferns G, Ghayour-Mobarhan M, Zali MR. Associations between C1431T and Pro12Ala variants of PPARγ gene and their haplotypes with susceptibility to metabolic syndrome in an Iranian population. Mol Biol Rep 2014; 41:3127-33. [PMID: 24464185 DOI: 10.1007/s11033-014-3172-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 01/16/2014] [Indexed: 02/08/2023]
Abstract
Peroxisome proliferator-activated receptor gamma (PPARγ) is a nuclear hormone receptor that regulates a number of genes involved in lipid and carbohydrate metabolism. The aim of this study was to investigate the association of C1431T and Pro12Ala polymorphisms of PPARγ gene and their haplotypes and diplotypes with risk of metabolic syndrome (MetS) in an Iranian population. A total of 340 unrelated Iranian subjects, including 175 MetS patients and 165 normal controls were enrolled. Each group was then divided into two subgroups according to the genotype (Pro/Pro and Pro/Ala+Ala/Ala for Pro12Ala, CC and CT+TT for C1431T). Genotypes were determined using a TaqMan method. Anthropometric indices, fasting plasma glucose and fasting lipid profile were measured by routine methods. A significant difference in the frequencies of the C1431T genotypes was observed between MetS and control subjects (P=0.014), whereas no association was found for the Pro12Ala. The T allele carriers had a significantly increased risk of MetS compared to the CC genotype (P=0.016) even after correction for multiple-testing and adjustment for age, sex and genotype. The T allele may therefore be considered as a risk factor for MetS (P=0.003). Analysis of combined groups showed that X/Ala-CC and Pro/Pro-X/T diplotypes were associated with a higher body weight, waist circumference and waist to hip ratio among the individuals with MetS. Moreover the Ala-T haplotype was weakly associated with a higher level of triglyceride and lower level of HDL, suggesting the possibility of an interaction between Ala and T alleles. This study suggests that the PPARγ C1431T polymorphism is related to an increased risk of MetS in an Iranian population and interacts with the Pro12Ala polymorphism, further increasing the risk of MetS.
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Affiliation(s)
- Hassan Rooki
- Gastroenterology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran,
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Mirzaei K, Hossein-nezhad A, Keshavarz SA, Koohdani F, Saboor-Yaraghi AA, Hosseini S, Eshraghian MR, Djalali M. Crosstalk between circulating peroxisome proliferator-activated receptor gamma, adipokines and metabolic syndrome in obese subjects. Diabetol Metab Syndr 2013; 5:79. [PMID: 24330836 PMCID: PMC3878851 DOI: 10.1186/1758-5996-5-79] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 12/06/2013] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Peroxisome proliferator-activated receptor gamma (PPARγ) has direct and indirect function in adipokines production process. We aimed to assess the possible influence of circulating PPARγ on relative risk of metabolic syndrome and also examine the association between circulating PPARγ and adipokines levels among obese subjects. METHODS A total of 96 obese subjects (body mass index (BMI) ≥30) were included in the current cross-sectional study. We assessed the body composition with the use of Body Composition Analyzer BC-418MA - Tanita. The MetS (metabolic syndrome) was defined based on the National Cholesterol Education Program Adult Treatment Panel III. All baseline blood samples were obtained following an overnight fasting. Serum concentrations of adipokines including Retinol binding protein 4 (RBP4), omentin-1, vaspin, progranulin, nesfatin-1 and circulating PPARγ was measured with the use of an enzyme-linked immunosorbent assay method. Statistical analyses were performed using software package used for statistical analysis (SPSS). RESULTS We found main association between circulating PPARγ and body composition in obese population. The risk of metabolic syndrome in subjects with higher concentration of PPARγ was 1.9 fold in compared with lower concentration of PPARγ after adjustment for age, sex and BMI. There was significant association between PPARγ and adipokines, specially nesfatin-1 and progranulin. Defined adipokines pattern among participants demonstrated the markedly higher concentration of vaspin, RBP4 and nesfatin-1 in participants with MetS compared to non-MetS subjects. CONCLUSIONS It appears all of studied adipokines might have association with PPARγ level and might simultaneously be involve in some common pathway to make susceptible obese subjects for MetS.
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Affiliation(s)
- Khadijeh Mirzaei
- Cellular and Molecular Nutrition Department, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Arash Hossein-nezhad
- Tehran University of Medical Sciences, Tehran, Iran
- Department of Medicine, Section of Endocrinology, Nutrition, and Diabetes, Vitamin D, Skin and Bone Research Laboratory, Boston University Medical Center, Boston, Massachusetts, United States of America
| | - Seyed Ali Keshavarz
- Clinical Nutrition Department, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Fariba Koohdani
- Cellular and Molecular Nutrition Department, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Akbar Saboor-Yaraghi
- Cellular and Molecular Nutrition Department, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Hosseini
- Clinical Nutrition Department, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Eshraghian
- Department of Biostatistics and Epidemiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmoud Djalali
- Cellular and Molecular Nutrition Department, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
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Zhang R, Wang J, Yang R, Sun J, Chen R, Luo H, Liu D, Cai D. Effects of Pro12Ala polymorphism in peroxisome proliferator-activated receptor-γ2 gene on metabolic syndrome risk: a meta-analysis. Gene 2013; 535:79-87. [PMID: 24012868 DOI: 10.1016/j.gene.2013.07.087] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 07/10/2013] [Accepted: 07/23/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Associations between peroxisome proliferator-activated receptor γ2 (PPARγ2) gene polymorphism and metabolic syndrome risk remained controversial and ambiguous. Thus, we performed a meta-analysis to assess the association between Pro12Ala polymorphism in PPARγ2 gene and metabolic syndrome susceptibility. METHODS An electronic literature search was conducted on Medline, OVID, Cochrane Library database, and the China National Knowledge Internet up to March 2013. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to calculate the strength of association in the fixed or random effects model. RESULTS Ten studies involving a total of 4456 cases and 10343 controls were included in this meta-analysis. No statistical evidence of association was found between Pro12Ala polymorphism and metabolic syndrome risk in all genetic models (homozygote model: OR=0.83, 95% CI=0.62-1.12; heterozygote model: OR=1.04, 95% CI=0.94-1.14; dominant model: OR=1.02, 95% CI=0.93-1.12; recessive model: OR=0.83, 95% CI=0.62-1.11). No statistical evidence of significant association was observed when stratified by ethnicity, definition of metabolic syndrome, source of control groups and quality score of the selected articles. All in all, the results did not support a major role of the Pro12Ala variant of the PPARγ2 gene in metabolic syndrome risk. CONCLUSIONS This meta-analysis suggested that the effect of Pro12Ala polymorphism in PPARγ2 gene may not be related to metabolic syndrome as an entity. However, Pro12Ala may affect the single component of metabolic syndrome. A large, well designed study is required to more adequately assess the role for Pro12Ala polymorphism on metabolic syndrome.
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Affiliation(s)
- Ruyi Zhang
- Department of Endocrinology, Southern Medical University, Zhujiang Hospital, 253# Industry Road, 510282 Guangzhou, Guangdong, China.
| | - Jiao Wang
- Department of Endocrinology, Southern Medical University, Zhujiang Hospital, 253# Industry Road, 510282 Guangzhou, Guangdong, China.
| | - Rui Yang
- Department of Endocrinology, Southern Medical University, Zhujiang Hospital, 253# Industry Road, 510282 Guangzhou, Guangdong, China.
| | - Jia Sun
- Department of Endocrinology, Southern Medical University, Zhujiang Hospital, 253# Industry Road, 510282 Guangzhou, Guangdong, China.
| | - Rongping Chen
- Department of Endocrinology, Southern Medical University, Zhujiang Hospital, 253# Industry Road, 510282 Guangzhou, Guangdong, China.
| | - Haizhao Luo
- Department of Endocrinology, Southern Medical University, Zhujiang Hospital, 253# Industry Road, 510282 Guangzhou, Guangdong, China.
| | - Duan Liu
- Department of Endocrinology, Southern Medical University, Zhujiang Hospital, 253# Industry Road, 510282 Guangzhou, Guangdong, China.
| | - Dehong Cai
- Department of Endocrinology, Southern Medical University, Zhujiang Hospital, 253# Industry Road, 510282 Guangzhou, Guangdong, China.
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Liu D. Network site optimization of reverse logistics for E-commerce based on genetic algorithm. Neural Comput Appl 2013. [DOI: 10.1007/s00521-013-1448-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zhao X, Xu K, Shi H, Cheng J, Ma J, Gao Y, Li Q, Ye X, Lu Y, Yu X, Du J, Du W, Ye Q, Zhou L. Application of the back-error propagation artificial neural network (BPANN) on genetic variants in the PPAR-γ and RXR-α gene and risk of metabolic syndrome in a Chinese Han population. J Biomed Res 2013; 28:114-22. [PMID: 24683409 PMCID: PMC3968282 DOI: 10.7555/jbr.27.20120061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 11/06/2012] [Accepted: 11/16/2012] [Indexed: 12/25/2022] Open
Abstract
This study was aimed to explore the associations between the combined effects of several polymorphisms in the PPAR-γ and RXR-α gene and environmental factors with the risk of metabolic syndrome by back-error propagation artificial neural network (BPANN). We established the model based on data gathered from metabolic syndrome patients (n = 1012) and normal controls (n = 1069) by BPANN. Mean impact value (MIV) for each input variable was calculated and the sequence of factors was sorted according to their absolute MIVs. Generalized multifactor dimensionality reduction (GMDR) confirmed a joint effect of PPAR-γ and RXR-α based on the results from BPANN. By BPANN analysis, the sequences according to the importance of metabolic syndrome risk factors were in the order of body mass index (BMI), serum adiponectin, rs4240711, gender, rs4842194, family history of type 2 diabetes, rs2920502, physical activity, alcohol drinking, rs3856806, family history of hypertension, rs1045570, rs6537944, age, rs17817276, family history of hyperlipidemia, smoking, rs1801282 and rs3132291. However, no polymorphism was statistically significant in multiple logistic regression analysis. After controlling for environmental factors, A1, A2, B1 and B2 (rs4240711, rs4842194, rs2920502 and rs3856806) models were the best models (cross-validation consistency 10/10, P = 0.0107) with the GMDR method. In conclusion, the interaction of the PPAR-γ and RXR-α gene could play a role in susceptibility to metabolic syndrome. A more realistic model is obtained by using BPANN to screen out determinants of diseases of multiple etiologies like metabolic syndrome.
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Affiliation(s)
- Xu Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Kang Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Hui Shi
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Jinluo Cheng
- Department of Endocrinology, the Affiliated Changzhou Second Hospital, Nanjing Medical University, Changzhou, Jiangsu 213003, China
| | - Jianhua Ma
- Department of Endocrinology, the First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yanqin Gao
- Department of Endocrinology, the Third Affiliated Hospital, Nanjing Medical University, Yizheng, Jiangsu 211400, China
| | - Qian Li
- Department of Endocrinology, the First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Xinhua Ye
- Department of Endocrinology, the Affiliated Changzhou Second Hospital, Nanjing Medical University, Changzhou, Jiangsu 213003, China
| | - Ying Lu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Xiaofang Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Juan Du
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Wencong Du
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Qing Ye
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Ling Zhou
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
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Puzianowska-Kuznicka M, Pawlik-Pachucka E, Owczarz M, Budzińska M, Polosak J. Small-molecule hormones: molecular mechanisms of action. Int J Endocrinol 2013; 2013:601246. [PMID: 23533406 PMCID: PMC3603355 DOI: 10.1155/2013/601246] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 12/30/2012] [Accepted: 01/17/2013] [Indexed: 01/01/2023] Open
Abstract
Small-molecule hormones play crucial roles in the development and in the maintenance of an adult mammalian organism. On the molecular level, they regulate a plethora of biological pathways. Part of their actions depends on their transcription-regulating properties, exerted by highly specific nuclear receptors which are hormone-dependent transcription factors. Nuclear hormone receptors interact with coactivators, corepressors, basal transcription factors, and other transcription factors in order to modulate the activity of target genes in a manner that is dependent on tissue, age and developmental and pathophysiological states. The biological effect of this mechanism becomes apparent not earlier than 30-60 minutes after hormonal stimulus. In addition, small-molecule hormones modify the function of the cell by a number of nongenomic mechanisms, involving interaction with proteins localized in the plasma membrane, in the cytoplasm, as well as with proteins localized in other cellular membranes and in nonnuclear cellular compartments. The identity of such proteins is still under investigation; however, it seems that extranuclear fractions of nuclear hormone receptors commonly serve this function. A direct interaction of small-molecule hormones with membrane phospholipids and with mRNA is also postulated. In these mechanisms, the reaction to hormonal stimulus appears within seconds or minutes.
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Affiliation(s)
- Monika Puzianowska-Kuznicka
- Department of Human Epigenetics, Mossakowski Medical Research Centre, 5 Pawinskiego Street, 02-106 Warsaw, Poland
- Department of Geriatrics and Gerontology, Medical Center of Postgraduate Education, 61/63 Kleczewska Street, 01-826 Warsaw, Poland
- *Monika Puzianowska-Kuznicka:
| | - Eliza Pawlik-Pachucka
- Department of Human Epigenetics, Mossakowski Medical Research Centre, 5 Pawinskiego Street, 02-106 Warsaw, Poland
- Department of Geriatrics and Gerontology, Medical Center of Postgraduate Education, 61/63 Kleczewska Street, 01-826 Warsaw, Poland
| | - Magdalena Owczarz
- Department of Geriatrics and Gerontology, Medical Center of Postgraduate Education, 61/63 Kleczewska Street, 01-826 Warsaw, Poland
| | - Monika Budzińska
- Department of Geriatrics and Gerontology, Medical Center of Postgraduate Education, 61/63 Kleczewska Street, 01-826 Warsaw, Poland
| | - Jacek Polosak
- Department of Human Epigenetics, Mossakowski Medical Research Centre, 5 Pawinskiego Street, 02-106 Warsaw, Poland
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