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de Luis Roman D, Izaola Jauregui O, Primo Martin D. The Polymorphism rs17300539 in the Adiponectin Promoter Gene Is Related to Metabolic Syndrome, Insulin Resistance, and Adiponectin Levels in Caucasian Patients with Obesity. Nutrients 2023; 15:5028. [PMID: 38140287 PMCID: PMC10746109 DOI: 10.3390/nu15245028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 11/29/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
Background and Aims: The present study was designed to investigate SNP rs17300539 in the ADIPOQ gene and its relationships with obesity, metabolic syndrome (MS), and serum circulating adiponectin. Methods: The present design involved a Caucasian population of 329 subjects with obesity. Anthropometric and adiposity parameters, blood pressure, biochemical parameters, and the percentage of patients with metabolic syndrome were recorded. The ADIPOQ gene variant (rs17300539) genotype was evaluated. Results: The percentage of patients with different genotypes of the rs17300539 polymorphism in this sample was 86.0% (n = 283) (GG), 11.2% (n = 37) (GA), and 2.7% (n = 9) (AA). The allele frequency was G (0.76) and A (0.24). Applying the dominant genetic model (GG vs. GA + AA), we reported differences between genotype GG and genotype GA + AA for serum adiponectin levels (Delta: 7.5 ± 1.4 ng/mL; p = 0.03), triglycerides (Delta: 41.1 ± 3.4 mg/dL; p = 0.01), fastingcirculating insulin (Delta: 4.9 ± 1.1 mUI/L; p = 0.02), and insulin resistance as HOMA-IR (Delta: 1.4 ± 0.1 units; p = 0.02). The remaining biochemical parameters were not related to the genotype of obese patients. The percentages of individuals with MS (OR = 2.07, 95% CI = 1.3-3.88; p = 0.01), hypertriglyceridaemia (OR = 2.66, 95% CI = 1.43-5.01; p = 0.01), and hyperglycaemia (OR = 3.31, 95% CI = 1.26-8.69; p = 0.02) were higher in GG subjects than patients with A allele. Logistic regression analysis reported an important risk of the presence of metabolic syndrome in GG subjects (OR = 1.99, 95% CI = 1.21-4.11; p = 0.02) after adjusting for adiponectin, dietary energy intakes, gender, weight, and age. Conclusions: The GG genotype of rs17300539 is associated with hypertriglyceridaemia, insulin resistance, low adiponectin levels, and a high risk of metabolic syndrome and its components.
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Affiliation(s)
- Daniel de Luis Roman
- Endocrinology and Nutrition Research Center, School of Medicine, Department of Endocrinology and Nutrition, Hospital Clinico Universitario, University of Valladolid, 47130 Valladolid, Spain; (O.I.J.); (D.P.M.)
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Circulating Adiponectin and Its Association with Metabolic Traits and Type 2 Diabetes: Gene-Diet Interactions Focusing on Selected Gene Variants and at the Genome-Wide Level in High-Cardiovascular Risk Mediterranean Subjects. Nutrients 2021; 13:nu13020541. [PMID: 33562295 PMCID: PMC7914877 DOI: 10.3390/nu13020541] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/26/2021] [Accepted: 02/02/2021] [Indexed: 12/27/2022] Open
Abstract
Adiponectin is gaining renewed interest since, in addition to its possible protective role against insulin resistance and arteriosclerosis, recent studies suggest other additional favorable effects. However, the influence of gene-diet interactions on plasma adiponectin levels is still little understood. We analyzed the association between plasma adiponectin levels and various metabolic traits in a high-cardiovascular risk Mediterranean population, as well as the genetic effect of four candidate single-nucleotide polymorphisms (SNPs) in the adiponectin gene (ADIPOQ) and their interactions with the Mediterranean dietary pattern. Additionally, we explored, at the genome-wide level, the SNPs most associated with plasma adiponectin levels, as well as gene-diet interactions with the Mediterranean diet. In the 954 participants studied (aged 55-80 years), plasma adiponectin levels were strongly associated with plasma HDL-C concentrations (p = 6.6 × 10-36) and inversely related to triglycerides (p = 4.7 × 10-18), fasting glucose (p = 3.5 × 10-16) and type 2 diabetes (p = 1.4 × 10-7). Of the four pre-selected ADIPOQ candidate SNPs, the one most associated with plasma adiponectin was the -11391G > A (rs17300539) promoter SNP (p = 7.2 × 10-5, in the multivariable adjusted model). No significant interactions with the Mediterranean diet pattern were observed for these SNPs. Additionally, in the exploratory genome-wide association study (GWAS), we found new SNPs associated with adiponectin concentrations at the suggestive genome-wide level (p < 1 × 10-5) for the whole population, including the lead SNP rs9738548 (intergenic) and rs11647294 in the VAT1L (Vesicle Amine Transport 1 Like) gene. We also found other promising SNPs on exploring different strata such as men, women, diabetics and non-diabetics (p = 3.5 × 10-8 for rs2850066). Similarly, we explored gene-Mediterranean diet interactions at the GWAS level and identified several SNPs with gene-diet interactions at p < 1 × 10-5. A remarkable gene-diet interaction was revealed for the rs2917570 SNP in the OPCML (Opioid Binding Protein/Cell Adhesion Molecule Like) gene, previously reported to be associated with adiponectin levels in some populations. Our results suggest that, in this high-cardiovascular risk Mediterranean population, and even though adiponectin is favorably associated with metabolic traits and lower type 2 diabetes, the gene variants more associated with adiponectin may be population-specific, and some suggestive gene-Mediterranean diet interactions were detected.
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Un Nisa K, Reza MI. Key Relevance of Epigenetic Programming of Adiponectin Gene in Pathogenesis of Metabolic Disorders. Endocr Metab Immune Disord Drug Targets 2020; 20:506-517. [DOI: 10.2174/1871530319666190801142637] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/20/2019] [Accepted: 06/20/2019] [Indexed: 12/20/2022]
Abstract
Background & Objective::
Significant health and social burdens have been created by the
growth of metabolic disorders like type 2 diabetes mellitus (T2DM), atherosclerosis, and non-alcoholic
steatohepatitis, worldwide. The number of the affected population is as yet rising, and it is assessed
that until 2030, 4−5 million individuals will acquire diabetes. A blend of environmental, genetic, epigenetic,
and other factors, such as diet, are accountable for the initiation and progression of metabolic
disorders. Several researches have shown strong relevance of adiponectin gene and metabolic disorders.
In this review, the potential influence of epigenetic mechanisms of adiponectin gene “ADIPOQ”
on increasing the risk of developing metabolic disorders and their potential in treating this major disorder
are discussed.
Results & Conclusion::
Various studies have postulated that a series of factors such as maternal High
fat diet (HFD), oxidative stress, pro-inflammatory mediators, sleep fragmentation throughout lifetime,
from gestation to old age, could accumulate epigenetic marks, including histone remodeling, DNA
methylation, and microRNAs (miRNAs) that, in turn, alter the expression of ADIPOQ gene and result
in hypoadiponectinemia which precipitates insulin resistance (IR) that in turn might induce or accelerate
the onset and development of metabolic disorder. A better understanding of global patterns of epigenetic
modifications and further their alterations in metabolic disorders will bestow better treatment
strategies design.
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Affiliation(s)
- Kaiser Un Nisa
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education & Research, SAS Nagar, India
| | - Mohammad Irshad Reza
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education & Research, SAS Nagar, India
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Abstract
OBJECTIVES Several single-nucleotide polymorphisms (SNPs) have been associated with Barrett's esophagus (BE) risk. In addition, environmental factors including smoking, alcohol consumption, and heartburn increase BE risk. However, data on potential interactions between these genetic and environmental factors on BE risk are scant. Understanding how genes and environmental risk factors interact may provide key insight into the pathophysiology of BE, and potentially identify opportunities for targeted prevention and treatment. The objectives of this study were to examine the main effects and the potential effect modification between known genetic loci (SNPs) and established environmental risk factors for BE. METHODS We performed a nested case-control study using data on 401 incident BE cases and 436 age-matched controls from the Nurses' Health Study, Nurses' Health Study II, and Health Professionals Follow-up Study cohorts, who gave blood and completed biennial questionnaires. Overall, we genotyped 46 SNPs identified in previous BE genome-wide association studies as well as SNPs in candidate genes related to BE susceptibility (i.e., related to excess body fat, fat distribution, factors associated with insulin resistance, and inflammatory mediators). A genetic risk score (GRS) was constructed to evaluate the combined effect of the selected SNPs on BE risk. Interactions between SNPs and BE risk factors were also assessed. RESULTS We observed a suggestive, but not statistically significant, association between our GRS and BE risk: a one-allele increase in the unweighted GRS increased the risk of BE by a factor of 1.20 (95% confidence interval = 1.00-1.44; P = 0.057). We did not observe any meaningful multiplicative interactions between smoking, alcohol consumption, or heartburn duration and BE genotypes. When we assessed the joint effect of weighted GRS and BE risk factors, we did not observe any significant interaction with alcohol and heartburn duration, whereas smoking showed a significant multiplicative interaction (P = 0.016). CONCLUSIONS Our results suggest that SNPs associated with BE at genome-wide significant levels can be combined into a GRS with a potential positive association with BE risk.
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Zhang Z, Li Y, Yang X, Wang L, Xu L, Zhang Q. Susceptibility of multiple polymorphisms in ADIPOQ , ADIPOR1 and ADIPOR2 genes to myocardial infarction in Han Chinese. Gene 2018. [DOI: 10.1016/j.gene.2018.03.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Liu X, Chen J, Zhang J. AdipoR1-mediated miR-3908 inhibits glioblastoma tumorigenicity through downregulation of STAT2 associated with the AMPK/SIRT1 pathway. Oncol Rep 2017; 37:3387-3396. [PMID: 28440504 DOI: 10.3892/or.2017.5589] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 04/07/2017] [Indexed: 11/06/2022] Open
Abstract
A prospective method of treatment for cancer is to inhibit oncogene signaling pathways with microRNA (miRNA or miR). In the present study, whether the expression of STAT2, AdipoR1/AMPK/SIRT1 pathway of glioma is regulated by miR-3908 was explored. To confirm whether the predicted miR-3908 is matched with STAT2 and AdipoR1, 3'UTR luciferase activity of STAT2 and AdipoR1 was assessed. In the presence of the mimics or inhibitors of miR-3908, cell function of glioma cells, such as proliferation, growth, migration, invasion and apoptosis were analyzed. The expression of AdipoR1 and its downstream AMPK/SIRT1 pathway proteins or STAT2 were examined. Luciferase reporter analysis showed that miR-3908 directly target STAT2 and AdipoR1. miR-3908 suppressed expression of STAT2 or AdipoR1 and downregulated AdipoR1 pathway genes, including AMPK, p-AMPK and SIRT1. miR-3908 inhibited tumorigenicity, migration, growth and invasion in glioma cell lines U251 and U87 as well as increased apoptosis of these cells. The pathways related to tumorigenicity and tumor progression, STAT2 and AdipoR1/AMPK/SIRT1 could be restrained by miR-3908. In conclusion, restoration of miR-3908 expression induced suppression of cancer progression and glioblastoma tumorigenicity. The present study discovered novel tumorigenesis associated with miR-3908, which may represent a new target in treatment for glioblastoma.
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Affiliation(s)
- Xiangming Liu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Jinglong Chen
- Department of Oncology, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, P.R. China
| | - Jinqian Zhang
- Department of Laboratory Medicine, The Second People's Hospital of Guangdong Province, Southern Medical University, Guangzhou, Guangdong 510317, P.R. China
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Solayman M, Saleh MA, Paul S, Khalil MI, Gan SH. In silico analysis of nonsynonymous single nucleotide polymorphisms of the human adiponectin receptor 2 (ADIPOR2) gene. Comput Biol Chem 2017; 68:175-185. [PMID: 28359874 DOI: 10.1016/j.compbiolchem.2017.03.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 02/24/2017] [Accepted: 03/06/2017] [Indexed: 11/17/2022]
Abstract
Polymorphisms of the ADIPOR2 gene are frequently linked to a higher risk of developing diseases including obesity, type 2 diabetes and cardiovascular diseases. Though mutations of the ADIPOR2 gene are detrimental, there is a lack of comprehensive in silico analyses of the functional and structural impacts at the protein level. Considering the involvement of ADIPOR2 in glucose uptake and fatty acid oxidation, an in silico functional analysis was conducted to explore the possible association between genetic mutations and phenotypic variations. A genomic analysis of 82 nonsynonymous SNPs in ADIPOR2 was initiated using SIFT followed by the SNAP2, nsSNPAnalyzer, PolyPhen-2, SNPs&GO, FATHMM and PROVEAN servers. A total of 10 mutations (R126W, L160Q, L195P, F201S, L235R, L235P, L256R, Y328H, E334K and Q349H) were predicted to have deleterious effects on the ADIPOR2 protein and were therefore selected for further analysis. Theoretical models of the variants were generated by comparative modeling via MODELLER 9.16. A protein structural analysis of these amino acid variants was performed using SNPeffect, I-Mutant, ConSurf, Swiss-PDB Viewer and NetSurfP to explore their solvent accessibility, molecular dynamics and energy minimization calculations. In addition, FTSite was used to predict the ligand binding sites, while NetGlycate, NetPhos2.0, UbPerd and SUMOplot were used to predict post-translational modification sites. All of the variants showed increased free energy, though F201S exhibited the highest energy increase. The root mean square deviation values of the modeled mutants strongly indicated likely pathogenicity. Remarkably, three binding sites were detected on ADIPOR2, and two mutations at positions 328 and 201 were found in the first and second binding pockets, respectively. Interestingly, no mutations were found at the post-translational modification sites. These genetic variants can provide a better understanding of the wide range of disease susceptibility associated with ADIPOR2 and aid the development of new molecular diagnostic markers for these diseases. The findings may also facilitate the development of novel therapeutic elements for associated diseases.
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Affiliation(s)
- Md Solayman
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.
| | - Md Abu Saleh
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.
| | - Sudip Paul
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh; Metabolomics Laboratory, Baker Heart and Diabetes Institute, Melbourne 3004, Victoria, Australia.
| | - Md Ibrahim Khalil
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh; Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia.
| | - Siew Hua Gan
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia.
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Impacts of Nonsynonymous Single Nucleotide Polymorphisms of Adiponectin Receptor 1 Gene on Corresponding Protein Stability: A Computational Approach. BIOMED RESEARCH INTERNATIONAL 2016; 2016:9142190. [PMID: 27294143 PMCID: PMC4884590 DOI: 10.1155/2016/9142190] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 04/11/2016] [Indexed: 01/05/2023]
Abstract
Despite the reported association of adiponectin receptor 1 (ADIPOR1) gene mutations with vulnerability to several human metabolic diseases, there is lack of computational analysis on the functional and structural impacts of single nucleotide polymorphisms (SNPs) of the human ADIPOR1 at protein level. Therefore, sequence- and structure-based computational tools were employed in this study to functionally and structurally characterize the coding nsSNPs of ADIPOR1 gene listed in the dbSNP database. Our in silico analysis by SIFT, nsSNPAnalyzer, PolyPhen-2, Fathmm, I-Mutant 2.0, SNPs&GO, PhD-SNP, PANTHER, and SNPeffect tools identified the nsSNPs with distorting functional impacts, namely, rs765425383 (A348G), rs752071352 (H341Y), rs759555652 (R324L), rs200326086 (L224F), and rs766267373 (L143P) from 74 nsSNPs of ADIPOR1 gene. Finally the aforementioned five deleterious nsSNPs were introduced using Swiss-PDB Viewer package within the X-ray crystal structure of ADIPOR1 protein, and changes in free energy for these mutations were computed. Although increased free energy was observed for all the mutants, the nsSNP H341Y caused the highest energy increase amongst all. RMSD and TM scores predicted that mutants were structurally similar to wild type protein. Our analyses suggested that the aforementioned variants especially H341Y could directly or indirectly destabilize the amino acid interactions and hydrogen bonding networks of ADIPOR1.
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Yu LX, Zhou NN, Liu LY, Wang F, Ma ZB, Li J, Yu ZG. Adiponectin receptor 1 (ADIPOR1) rs1342387 polymorphism and risk of cancer: a meta-analysis. Asian Pac J Cancer Prev 2015; 15:7515-20. [PMID: 25292021 DOI: 10.7314/apjcp.2014.15.18.7515] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Many studies have indicated possible associations between a polymorphism of adiponectin receptor 1 (ADIPOR1) rs1342387 and risk of cancer, but contradictory results have been reported. The main aim of this study was to draw a reliable conclusion about the relationship between the rs1342387 polymorphism and cancer incidence, by conducting a literature search of Pubmed, Embase, Wanfang and Cochrane libraries. Eleven studies including 3, 738 cases and 4, 748 controls were identified in this meta-analysis. The ADIPOR1 rs1342387 polymorphism was associated with risk of colorectal cancer for all genetic comparison models (GG vs AA, OR: 1.44, 95%CI: 1.21 -1.70; G carriers vs A carriers, OR: 1.23, 95%CI: 1.11 -1.36; dominant model, OR: 1.28, 95%CI: 1.10 -1.49 and recessive model, OR: 1.31, 95%CI: 1.12 -1.55). Stratified by ethnicity, the rs1342387 polymorphism was significantly associated with risk of colorectal cancer in Asian ancestry for all genetic comparison models (GG vs AA, OR: 1.56, 95%CI: 1.26-1.92; G carriers vs. A carriers OR: 1.30, 95%CI: 1.18 -1.43; dominant model OR: 1.31, 95%CI: 1.08 -1.60 and recessive model OR: 1.44, 95%CI: 1.26 -1.64), but not in Caucasian or mixed (Caucasian mainly) groups. In summary, the ADIPOR1 rs1342387 polymorphism is significantly associated with risk of colorectal cancer among individuals of Asian ancestry.
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Affiliation(s)
- Li-Xiang Yu
- Department of Breast Diseases, The Second Hospital of Shandong University, Jinan, China E-mail :
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Peralta Romero JDJ, Karam Araujo R, Burguete García AI, Estrada Velasco BI, López Islas C, Figueroa Arredondo PMDC, Valladares Salgado A, Cruz M. ADIPOQ and ADIPOR2 gene polymorphisms: association with overweight/obesity in Mexican children. BOLETIN MEDICO DEL HOSPITAL INFANTIL DE MEXICO 2015; 72:26-33. [PMID: 29421176 DOI: 10.1016/j.bmhimx.2015.02.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 02/10/2015] [Accepted: 02/12/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND ENSANUT 2012 showed a combined prevalence of overweight and obesity of 34.4% in Mexican children. Single nucleotide polymorphisms (SNPs) of the ADIPOQ and ADIPOR2 genes have been reported in many populations, but their association with obesity has not been confirmed in other studies. Our aim was to determine the association of SNPs from ADIPOQ and ADIPOR2 genes with obesity in Mexican children. METHODS A total of 2,634 children from 6 to 12 years old were enrolled in the study from four IMSS Units in Mexico City. We selected 1,469 unrelated children (745 normal weight and 724 overweight/obese). Phenotype characterization included anthropometric measurements, blood pressure, biochemical parameters, insulin concentrations and presence of acanthosis nigricans (AN). Analysis of the SNPs rs182052, rs266729, rs2241766, rs822393 of ADIPOQ and rs11061971 of ADIPOR2 was carried out in the DNA samples. RESULTS The study showed significant differences (p <0.05) between groups in waist circumference, blood pressure, presence of AN, insulin concentrations, HOMA-IR, fasting glucose and lipid parameters, being higher in obese children. No associations in ADIPOQ variants with the presence of overweight/obesity were found. The presence of the variant rs11061971 of ADIPOR2 in children had a significant association with protection of overweight/obesity (OR 0.79, 95% CI 0.68-0.93, p = 0.003). Also, the log-additive model confirmed the association by codominant and dominant models (p <0.05). CONCLUSIONS The presence of rs11061971 of ADIPOR2 variant confers protection against obesity and could be used as a marker in Mexican children.
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Affiliation(s)
- José de Jesús Peralta Romero
- Department of Graduate Studies, National School of Medicine and Homeopathy, Section of Molecular Biomedicine, Instituto Politécnico Nacional, Mexico City, Mexico; Medical Research Unit in Biochemistry, Specialties Hospital, Centro Médico Nacional SXXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Roberto Karam Araujo
- Department of Economic and Social Benefits, Mexican Social Security Institute, Mexico City, Mexico
| | - Ana Isabel Burguete García
- Department of Chronic Infection and Cancer, CISEI, National Institute of Public Health , Cuernavaca, Morelos, Mexico
| | | | - Claudia López Islas
- Department of Chronic Infection and Cancer, CISEI, National Institute of Public Health , Cuernavaca, Morelos, Mexico
| | | | - Adán Valladares Salgado
- Medical Research Unit in Biochemistry, Specialties Hospital, Centro Médico Nacional SXXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Miguel Cruz
- Medical Research Unit in Biochemistry, Specialties Hospital, Centro Médico Nacional SXXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico.
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Wu CC, Tsai CH, Lu YC, Lin HC, Hwang JH, Lin YH, Yang WS, Chen PJ, Liao WC, Lee YL, Liu TC, Hsu CJ. Contribution of adiponectin and its type 1 receptor to age-related hearing impairment. Neurobiol Aging 2015; 36:2085-93. [PMID: 25911279 DOI: 10.1016/j.neurobiolaging.2015.02.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 02/25/2015] [Accepted: 02/28/2015] [Indexed: 01/29/2023]
Abstract
Age-related hearing impairment (ARHI) is a complex neurodegenerative disorder caused by a combination of environmental and genetic factors. We have reported previously that obesity increases the risk for ARHI, and that plasma levels of adiponectin are associated with ARHI. In the present study, we further explored the role of adiponectin in the pathophysiology of ARHI by investigating the genotypes of ADIPOQ and ADIPOR1, the genes of adiponectin and its type 1 receptor, respectively. A total of 1682 volunteers were enrolled, and their audiological phenotypes were determined according to the z scores converted from their original frequency-specific hearing thresholds. A total of 9 tag-single nucleotide polymorphisms (tagSNPs) in ADIPOQ and 4 tagSNPs in ADIPOR1 were genotyped, and the genotypes were correlated to the audiological phenotypes under the assumption of various inheritance models. Significant associations were identified between certain ADIPOQ tagSNPs and z scores under dominant, codominant, or additive models, whereas no association was identified between ADIPOR1 tagSNPs and z scores. The associations between ADIPOQ tagSNPs and z scores appear to exist only in subjects with specific ADIPOR1 genotypes, indicating an interaction between adiponectin and AdipoR1. Measurement of plasma adiponectin in 736 subjects revealed that ADIPOQ genotypes might exert their effects on hearing levels via modulation of plasma adiponectin levels. Subsequently, we confirmed the expression of AdipoR1 in the inner ear of mice, and demonstrated antiapoptotic effects of adiponectin in cochlear explant cultures. These results provide insights into the physiological function and potential clinical implications of adiponectin against ARHI.
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Affiliation(s)
- Chen-Chi Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan; Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Ching-Hui Tsai
- Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei, Taiwan
| | - Ying-Chang Lu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Hsiao-Chun Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Juen-Haur Hwang
- Department of Otolaryngology, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan; School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Yin-Hung Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan; Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wei-Shiung Yang
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan; Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Pei-Jer Chen
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wei-Chih Liao
- Health Management Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Yungling Leo Lee
- Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei, Taiwan; Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.
| | - Tien-Chen Liu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.
| | - Chuan-Jen Hsu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan; Department of Otolaryngology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan.
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Chen L, Chen R, Wang H, Liang F. Mechanisms Linking Inflammation to Insulin Resistance. Int J Endocrinol 2015; 2015:508409. [PMID: 26136779 PMCID: PMC4468292 DOI: 10.1155/2015/508409] [Citation(s) in RCA: 298] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 05/04/2015] [Indexed: 12/14/2022] Open
Abstract
Obesity is now widespread around the world. Obesity-associated chronic low-grade inflammation is responsible for the decrease of insulin sensitivity, which makes obesity a major risk factor for insulin resistance and related diseases such as type 2 diabetes mellitus and metabolic syndromes. The state of low-grade inflammation is caused by overnutrition which leads to lipid accumulation in adipocytes. Obesity might increase the expression of some inflammatory cytokines and activate several signaling pathways, both of which are involved in the pathogenesis of insulin resistance by interfering with insulin signaling and action. It has been suggested that specific factors and signaling pathways are often correlated with each other; therefore, both of the fluctuation of cytokines and the status of relevant signaling pathways should be considered during studies analyzing inflammation-related insulin resistance. In this paper, we discuss how these factors and signaling pathways contribute to insulin resistance and the therapeutic promise targeting inflammation in insulin resistance based on the latest experimental studies.
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Affiliation(s)
- Li Chen
- Hubei University of Chinese Medicine, Wuhan 430061, China
- Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Wuhan 430061, China
| | - Rui Chen
- Integrated TCM and Western Medicine Department, Union Hospital, Tongji Medical College of Huazhong Science and Technology University, Wuhan 430022, China
| | - Hua Wang
- Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Wuhan 430061, China
- Acupuncture and Moxibustion College, Hubei University of Chinese Medicine, Wuhan 430061, China
| | - Fengxia Liang
- Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Wuhan 430061, China
- Acupuncture and Moxibustion College, Hubei University of Chinese Medicine, Wuhan 430061, China
- *Fengxia Liang:
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Ou Y, Chen P, Zhou Z, Li C, Liu J, Tajima K, Guo J, Cao J, Wang H. Associations between variants on ADIPOQ and ADIPOR1 with colorectal cancer risk: a Chinese case-control study and updated meta-analysis. BMC MEDICAL GENETICS 2014; 15:137. [PMID: 25516230 PMCID: PMC4411774 DOI: 10.1186/s12881-014-0137-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 12/11/2014] [Indexed: 12/11/2022]
Abstract
Background Epidemiological studies have suggested that variants on adiponectin (ADIPOQ) and its receptor ADIPOR1 (adiponectin receptor 1) are associated with colorectal cancer (CRC) risk; however, the results were inconclusive. The aim of the study was to evaluate the associations between the variants on ADIPOQ and ADIPOR1 and the CRC risk with a hospital-based case-control study in the Chinese population along with meta-analysis of available epidemiological studies. Methods With a hospital-based case-control study of 341 cases and 727 controls, the associations between the common variants on ADIPOQ (rs266729, rs822395, rs2241766 and rs1501299) and ADIPOR1 (rs1342387 and rs12733285) and CRC susceptibility were evaluated. Meta-analysis of the published epidemiological studies was performed to investigate the associations between the variants and CRC risk. Results For the population study, we found that variant rs1342387 of ADIPOR1 was associated with a reduced risk for CRC [adjusted odds ratio (OR) = 0.74, 95% confidential intervals (95% CI) = 0.57-0.97; CT/TT vs. CC]. The meta-analysis also suggested a significant association for rs1342387 and CRC risk; the pooled OR was 0.79 (95% CI = 0.66-0.95) for the CT/TT carriers compared to CC homozygotes under the random-effects model (Q = 8.06, df = 4, P = 0.089; I2 = 50.4%). The case-control study found no significant association for variants rs266729, rs822395, rs2241766, and rs1501299 on ADIPOQ or variant rs12733285 on ADIPOR1 and CRC susceptibility, which were consistent with results from the meta-analysis studies. Conclusions These data suggested that variant rs1342387 on ADIPOR1 may be a novel CRC susceptibility factor. Electronic supplementary material The online version of this article (doi:10.1186/s12881-014-0137-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yiyi Ou
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, P. R China. .,Medical Department, The General Hospital of Navy, Beijing, 100037, P. R China.
| | - Peizhan Chen
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, P. R China.
| | - Ziyuan Zhou
- Toxicology Institute, Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, College of Preventive Medicine; Third Military Medical University, Chongqing, 400038, P. R. China. .,Department of Environment Health, College of Preventive Medicine; Third Military Medical University, Chongqing, 400038, P. R. China.
| | - Chenglin Li
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, P. R China.
| | - Jinyi Liu
- Toxicology Institute, Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, College of Preventive Medicine; Third Military Medical University, Chongqing, 400038, P. R. China.
| | - Kazuo Tajima
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Japan.
| | - Junsheng Guo
- Department of Military Hygiene, Faculty of Naval Medicine, Second Military Medical University, Shanghai, 200433, P. R. China.
| | - Jia Cao
- Toxicology Institute, Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, College of Preventive Medicine; Third Military Medical University, Chongqing, 400038, P. R. China.
| | - Hui Wang
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, P. R China. .,Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing, 100021, P. R. China. .,School of Life Science and Technology, ShanghaiTech University, Shanghai, 200031, P. R. China.
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Hernandez-Escalante VM, Nava-Gonzalez EJ, Voruganti VS, Kent JW, Haack K, Laviada-Molina HA, Molina-Segui F, Gallegos-Cabriales EC, Lopez-Alvarenga JC, Cole SA, Mezzles MJ, Comuzzie AG, Bastarrachea RA. Replication of obesity and diabetes-related SNP associations in individuals from Yucatán, México. Front Genet 2014; 5:380. [PMID: 25477898 PMCID: PMC4235406 DOI: 10.3389/fgene.2014.00380] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 10/15/2014] [Indexed: 12/28/2022] Open
Abstract
The prevalence of type 2 diabetes (T2D) is rising rapidly and in Mexicans is ~19%. T2D is affected by both environmental and genetic factors. Although specific genes have been implicated in T2D risk few of these findings are confirmed in studies of Mexican subjects. Our aim was to replicate associations of 39 single nucleotide polymorphisms (SNPs) from 10 genes with T2D-related phenotypes in a community-based Mexican cohort. Unrelated individuals (n = 259) living in southeastern Mexico were enrolled in the study based at the University of Yucatan School of Medicine in Merida. Phenotypes measured included anthropometric measurements, circulating levels of adipose tissue endocrine factors (leptin, adiponectin, pro-inflammatory cytokines), and insulin, glucose, and blood pressure. Association analyses were conducted by measured genotype analysis implemented in SOLAR, adapted for unrelated individuals. SNP Minor allele frequencies ranged from 2.2 to 48.6%. Nominal associations were found for CNR1, SLC30A8, GCK, and PCSK1 SNPs with systolic blood pressure, insulin and glucose, and for CNR1, SLC30A8, KCNJ11, and PCSK1 SNPs with adiponectin and leptin (p < 0.05). P-values greater than 0.0014 were considered significant. Association of SNPs rs10485170 of CNR1 and rs5215 of KCNJ11 with adiponectin and leptin, respectively, reached near significance (p = 0.002). Significant association (p = 0.001) was observed between plasma leptin and rs5219 of KCNJ11.
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Affiliation(s)
| | - Edna J Nava-Gonzalez
- Facultad de Salud Publica y Nutricion, Universidad Autonoma de Nuevo Leon Nuevo Leon, Monterrey, Mexico
| | - V Saroja Voruganti
- Nutrition and UNC Nutrition Research Institute, University of North Carolina Chapel Hill, NC, USA
| | - Jack W Kent
- Department of Genetics, Texas Biomedical Research Institute San Antonio, TX, USA
| | - Karin Haack
- Department of Genetics, Texas Biomedical Research Institute San Antonio, TX, USA
| | - Hugo A Laviada-Molina
- Departamento de Investigación, Escuela de Ciencias de la Salud, Universidad Marista de Merida Merida, Yucatan, Mexico
| | - Fernanda Molina-Segui
- Departamento de Investigación, Escuela de Ciencias de la Salud, Universidad Marista de Merida Merida, Yucatan, Mexico
| | | | | | - Shelley A Cole
- Department of Genetics, Texas Biomedical Research Institute San Antonio, TX, USA
| | - Marguerite J Mezzles
- Department of Genetics, Texas Biomedical Research Institute San Antonio, TX, USA
| | - Anthony G Comuzzie
- Department of Genetics, Texas Biomedical Research Institute San Antonio, TX, USA
| | - Raul A Bastarrachea
- Department of Genetics, Texas Biomedical Research Institute San Antonio, TX, USA
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15
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The effect of resveratrol on the expression of AdipoR1 in kidneys of diabetic nephropathy. Mol Biol Rep 2014; 41:2151-9. [PMID: 24413998 DOI: 10.1007/s11033-014-3064-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 01/04/2014] [Indexed: 12/17/2022]
Abstract
Adiponectin is an adipocyte derived protein that plays pivotal roles in anti-oxidation, anti-inflammatory and insulin-sensitizing properties by activating two receptors, AdipoR1 and AdipoR2. Recent studies have shown that the down-regulation of AdipoR1 is a known cause of diabetic nephropathy (DN). Resveratrol (Resv), a natural polyphenol, has been identified as a potent activator of forkhead transcription factor O1 (FoxO1) which can up-regulate the expression of AdipoR1. In the present study, we have investigated whether Resv can up-regulate the expression of AdipoR1 by activating FoxO1 that is in kidney of DN rats and mesangial cells (MCs) cultured in high glucose (HG, 30 mmol/L) medium. In vivo, we show that, in the renal cortex of diabetic rats, the expression of AdipoR1 was significantly reduced and correlated with an increase in the generation of malondialdehyde (MDA), Collagen IV and fibronectin proteins. However, administration with Resv significantly increased the expression of AdipoR1. This correlated with not only a decrease in generation of MDA, Collagen IV and fibronectin proteins levels but also more improved kidney pathological and biochemical indicators changes. In vitro, we show that HG-induced depression of FoxO1 activity was associated with the expression of Adipor1 in MCs. Treatment with Resv (20 μmol/L) caused an elevation in the activity of FoxO1 and a significantly increase in the expression of AdipoR1. Furthermore, inhibition of FoxO1 through short hairpin RNA markedly reduced the expression of Adipor1 in MCs cultured by Resv. In conclusion, Resv can significantly increase the expression of AdipoR1 by activating FoxO1 in diabetic kidney. These data also suggest that Resv may serve as a promising agent for preventing or treating DN.
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Roberts CK, Hevener AL, Barnard RJ. Metabolic syndrome and insulin resistance: underlying causes and modification by exercise training. Compr Physiol 2013; 3:1-58. [PMID: 23720280 DOI: 10.1002/cphy.c110062] [Citation(s) in RCA: 253] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Metabolic syndrome (MS) is a collection of cardiometabolic risk factors that includes obesity, insulin resistance, hypertension, and dyslipidemia. Although there has been significant debate regarding the criteria and concept of the syndrome, this clustering of risk factors is unequivocally linked to an increased risk of developing type 2 diabetes and cardiovascular disease. Regardless of the true definition, based on current population estimates, nearly 100 million have MS. It is often characterized by insulin resistance, which some have suggested is a major underpinning link between physical inactivity and MS. The purpose of this review is to: (i) provide an overview of the history, causes and clinical aspects of MS, (ii) review the molecular mechanisms of insulin action and the causes of insulin resistance, and (iii) discuss the epidemiological and intervention data on the effects of exercise on MS and insulin sensitivity.
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Affiliation(s)
- Christian K Roberts
- Exercise and Metabolic Disease Research Laboratory, Translational Sciences Section, School of Nursing, University of California at Los Angeles, Los Angeles, California, USA.
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Kaklamani VG, Hoffmann TJ, Thornton TA, Hayes G, Chlebowski R, Van Horn L, Mantzoros C. Adiponectin pathway polymorphisms and risk of breast cancer in African Americans and Hispanics in the Women's Health Initiative. Breast Cancer Res Treat 2013; 139:461-8. [PMID: 23624817 PMCID: PMC3773607 DOI: 10.1007/s10549-013-2546-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 04/22/2013] [Indexed: 12/29/2022]
Abstract
Adiponectin, a protein secreted by the adipose tissue, is an endogenous insulin sensitizer with circulating levels that are decreased in obese and diabetic subjects. Recently, circulating levels of adiponectin have been correlated with breast cancer risk. Our previous work showed that polymorphisms of the adiponectin pathway are associated with breast cancer risk. We conducted the first study of adiponectin pathways in African Americans and Hispanics in the Women's Health Initiative SNP Health Association Resource cohort of 3,642 self-identified Hispanic women and 8,515 self-identified African American women who provided consent for DNA analysis. Single nucleotide polymorphisms (SNPs) from three genes were included in this analysis: ADIPOQ, ADIPOR1, and ADIPOR2. The genome-wide human SNP array 6.0 (909,622 SNPs) ( www.affymetrix.com ) was used. We found that rs1501299, a functional SNP of ADIPOQ that we previously reported was associated with breast cancer risk in a mostly Caucasian population, was also significantly associated with breast cancer incidence (HR for the GG/TG genotype: 1.23; 95 % CI 1.059-1.43) in African American women. We did not find any other SNPs in these genes to be associated with breast cancer incidence. This is the first study assessing the role of adiponectin pathway SNPs in breast cancer risk in African Americans and Hispanics. RS1501299 is significantly associated with breast cancer risk in African American women. As the rates of obesity and diabetes increase in African Americans and Hispanics, adiponectin and its functional SNPs may aid in breast cancer risk assessment.
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Affiliation(s)
- Virginia G Kaklamani
- Division Hematology/Oncology, Department of Medicine, Northwestern University, Chicago, IL 60611, USA.
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18
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De Rosa A, Monaco ML, Nigro E, Scudiero O, D'Andrea M, Pilla F, Oriani G, Daniele A. Tissue-specific downregulation of the adiponectin "system": possible implications for fat accumulation tendency in the pig. Domest Anim Endocrinol 2013; 44:131-8. [PMID: 23291014 DOI: 10.1016/j.domaniend.2012.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 11/07/2012] [Accepted: 11/09/2012] [Indexed: 02/06/2023]
Abstract
Adiponectin's beneficial effects are mediated by the AdipoR1 and AdipoR2 receptors (AdipoRs). The pig is a good model to study complex disorders such as obesity. We analyzed the expression of adiponectin, AdipoRs and some key molecules of energy metabolism (AMP-activated protein kinase α [AMPKα], p38 mitogen-activated protein kinase [p38 MAPK], and PPARα) in 2 pig breeds that displayed an opposite genetic behavior for energy metabolism: Casertana (CE), a fat-type animal, and Large White (LW), a lean-type animal. Muscle, liver, visceral and subcutaneous adipose tissues, and brain tissues were examined. The AdipoRs cDNA sequences were identical in the 2 breeds. AdipoRs mRNA expression, measured in all tissues, was significantly lower only in the 2 adipose tissues of CE pigs (P < 0.05). The muscle expression of AdipoRs, AMPKα, p38 MAPK, and PPARα was lower in CE than in LW animals (P < 0.01, P < 0.05, P < 0.01, P < 0.01, respectively). In liver, no molecule differed between breeds. The expression of both AdipoRs in visceral and subcutaneous adipose tissues was lower in CE pigs (P < 0.01). In brain, AdipoR1 and AMPKα expression was lower in CE pigs (P < 0.01), whereas AdipoR2 tended to be lower in CE than LW pigs (P = 0.05). In conclusion, our results suggest that tissue-specific downregulation of Adiponectin, AdipoRs, and of the key molecules of energy metabolism may be associated with the tendency of CE pigs to accumulate fat.
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Affiliation(s)
- A De Rosa
- CEINGE- Biotecnologie Avanzate Scarl, Via Gaetano Salvatore 482, 80145, Napoli, Italy
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Peters KE, Beilby J, Cadby G, Warrington NM, Bruce DG, Davis WA, Davis TM, Wiltshire S, Knuiman M, McQuillan BM, Palmer LJ, Thompson PL, Hung J. A comprehensive investigation of variants in genes encoding adiponectin (ADIPOQ) and its receptors (ADIPOR1/R2), and their association with serum adiponectin, type 2 diabetes, insulin resistance and the metabolic syndrome. BMC MEDICAL GENETICS 2013; 14:15. [PMID: 23351195 PMCID: PMC3598639 DOI: 10.1186/1471-2350-14-15] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 01/17/2013] [Indexed: 12/18/2022]
Abstract
Background Low levels of serum adiponectin have been linked to central obesity, insulin resistance, metabolic syndrome, and type 2 diabetes. Variants in ADIPOQ, the gene encoding adiponectin, have been shown to influence serum adiponectin concentration, and along with variants in the adiponectin receptors (ADIPOR1 and ADIPOR2) have been implicated in metabolic syndrome and type 2 diabetes. This study aimed to comprehensively investigate the association of common variants in ADIPOQ, ADIPOR1 and ADIPOR2 with serum adiponectin and insulin resistance syndromes in a large cohort of European-Australian individuals. Methods Sixty-four tagging single nucleotide polymorphisms in ADIPOQ, ADIPOR1 and ADIPOR2 were genotyped in two general population cohorts consisting of 2,355 subjects, and one cohort of 967 subjects with type 2 diabetes. The association of tagSNPs with outcomes were evaluated using linear or logistic modelling. Meta-analysis of the three cohorts was performed by random-effects modelling. Results Meta-analysis revealed nine genotyped tagSNPs in ADIPOQ significantly associated with serum adiponectin across all cohorts after adjustment for age, gender and BMI, including rs10937273, rs12637534, rs1648707, rs16861209, rs822395, rs17366568, rs3774261, rs6444175 and rs17373414. The results of haplotype-based analyses were also consistent. Overall, the variants in the ADIPOQ gene explained <5% of the variance in serum adiponectin concentration. None of the ADIPOR1/R2 tagSNPs were associated with serum adiponectin. There was no association between any of the genetic variants and insulin resistance or metabolic syndrome. A multi-SNP genotypic risk score for ADIPOQ alleles revealed an association with 3 independent SNPs, rs12637534, rs16861209, rs17366568 and type 2 diabetes after adjusting for adiponectin levels (OR=0.86, 95% CI=(0.75, 0.99), P=0.0134). Conclusions Genetic variation in ADIPOQ, but not its receptors, was associated with altered serum adiponectin. However, genetic variation in ADIPOQ and its receptors does not appear to contribute to the risk of insulin resistance or metabolic syndrome but did for type 2 diabetes in a European-Australian population.
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Affiliation(s)
- Kirsten E Peters
- School of Medicine and Pharmacology, Fremantle Hospital Unit, The University of Western Australia, Nedlands, Western Australia, Australia
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20
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Abstract
The increasing percentage of obese individuals in the population and its independent association of increased risk for the development of cancer have heightened the necessity to understand the molecular mechanisms that underlie this connection. The deregulation of adipokines in the setting of obesity and their impact on cancer progression and metastasis is one such area of research. Adipokines are bioactive proteins that mediate metabolism, inflammation, angiogenesis, and proliferation. Altered levels of adipokines or their cognate receptors in cancers can ultimately lead to an imbalance in downstream molecular pathways. Discovery of adipokine receptors in various cancers has highlighted the potential for novel therapeutic targets. Leptin and adiponectin represent two adipokines that elicit generally opposing molecular effects. Epidemiologic studies have highlighted associations between increased serum leptin levels and increased tumor growth, whereas adiponectin exhibits an inverse correlation with cancer development. This review addresses the current level of understanding of molecular pathways activated by adiponectin and leptin to identify the areas of intervention and facilitate advancement in the field.
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Affiliation(s)
- Michael N Vansaun
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee 37232, USA.
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21
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Hasani-Ranjbar S, Amoli MM, Tabatabaei-Malazy O, Rumi Y, Tavakkoly-Bazzaz J, Samimi H, Abbasifarid E. Effect of adiponectin gene polymorphisms on waist circumference in patients with diabetes. J Diabetes Metab Disord 2012; 11:14. [PMID: 23497697 PMCID: PMC3598167 DOI: 10.1186/2251-6581-11-14] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 08/06/2012] [Indexed: 01/09/2023]
Abstract
BACKGROUND Plasma levels of adiponectin which is secreted from adipose tissue are associated with various parameters of metabolic syndrome. This effect seems to be a result of interactions between genetic and environmental factors including central obesity. The present study was carried out to investigate the possibility of relation between single nucleotide polymorphisms of adiponectin gene (+45 T/G and -11391 G/A) and waist circumferences (WC) in patients with type 2 diabetes. METHODS This cross-sectional study was conducted on n = 238 diabetic patients selected as cases and n = 159 as healthy control who were recruited from Rafsanjan city in south - east of Iran. The possible association of +45 T/G and -11391 G/A adiponectin gene polymorphisms with WC according to age and sex was evaluated. RESULTS There was no significant difference in distribution of frequencies of +45 T/G and -11391 G/A adiponectin gene polymorphisms in each group. We only found a significant association between -11391 G/A adiponectin gene polymorphism with WC in diabetic group (p = 0.021). This association was remained significant after adjustment in multivariate regression model (p = 0.019, OR: 0.244, 95%CI: 0.075-0.791) and also this effect was independent of sex and age. CONCLUSION We found higher abdominal obesity in GA or AA carriers of adiponectin - 11391 G/A genotype in type 2 diabetes patients independent of age and sex.
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Affiliation(s)
- Shirin Hasani-Ranjbar
- Endocrinology and Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa M Amoli
- Endocrinology and Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Endocrinology and Metabolism Research Institute, 5th floor, Dr. Shariati Hospital, North Kargar Ave., Tehran 14114, Iran
| | - Ozra Tabatabaei-Malazy
- Endocrinology and Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Endocrinology and Metabolism Research Institute, 5th floor, Dr. Shariati Hospital, North Kargar Ave., Tehran 14114, Iran
| | - Yalda Rumi
- Endocrinology and Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Javad Tavakkoly-Bazzaz
- Endocrinology and Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Hilda Samimi
- Endocrinology and Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Elnaz Abbasifarid
- Endocrinology and Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Dhillon PK, Penney KL, Schumacher F, Rider JR, Sesso HD, Pollak M, Fiorentino M, Finn S, Loda M, Rifai N, Mucci LA, Giovannucci E, Stampfer MJ, Ma J. Common polymorphisms in the adiponectin and its receptor genes, adiponectin levels and the risk of prostate cancer. Cancer Epidemiol Biomarkers Prev 2011; 20:2618-27. [PMID: 21960694 DOI: 10.1158/1055-9965.epi-11-0434] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Adiponectin, an insulin-sensitizing adipokine, is inversely associated with adiposity and prostate cancer risk and progression. However, the role of genetic variation in the adiponectin (ADIPOQ) and receptor genes (ADIPOR1/R2) in prostate cancer is largely unknown. METHODS In a nested case-control study of 1,286 cases and 1,267 controls within the Physicians' Health Study, we evaluated 29 common single-nucleotide polymorphisms (SNP) in ADIPOQ (n = 13), ADIPOR1 (n = 5), and ADIPOR2 (n = 11) in relation to the risk of prostate cancer. In subgroups, we also evaluated the association of genotype and circulating adiponectin levels (n = 951) and prostate tumor expression of insulin receptor (IR) and insulin-like growth factor 1 (IGF-IR) receptor (n = 181). RESULTS Among the 12 tagging polymorphisms in ADIPOQ, four (rs266729, rs182052, rs822391, and rs2082940) were significantly associated (P < 0.05) with overall prostate cancer risk, with no significant difference by tumor grade or clinical stage. Two of the risk SNPs (rs266729 and rs182052) plus four other SNPs (rs16861209, rs17366568, rs3774261, and rs7639352) were also associated with plasma adiponectin levels, and three of these (rs1686109, rs17366568, and rs3774261) were also significantly associated with IR expression in prostate tumor tissue. One additional SNP was associated with IGFI-R tumor tissue expression (rs16861205). None of the 16 variants in ADIPOR1/R2 were related to cancer risk or circulating adiponectin levels. CONCLUSIONS Common variants in the adiponectin gene were associated with prostate cancer risk, plasma adiponectin levels, and IR or IGF-IR expression in the prostate tumor. IMPACT These genotype-phenotype associations support the biological relevance of adiponectin for prostate carcinogenesis, particularly in earlier stages of development.
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Affiliation(s)
- Preet K Dhillon
- Channing Laboratory, Brigham and Women's Hospital and Harvard Medical School Boston, MA, USA
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Kaklamani V, Yi N, Zhang K, Sadim M, Offit K, Oddoux C, Ostrer H, Mantzoros C, Pasche B. Polymorphisms of ADIPOQ and ADIPOR1 and prostate cancer risk. Metabolism 2011; 60:1234-43. [PMID: 21397927 PMCID: PMC3134585 DOI: 10.1016/j.metabol.2011.01.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 01/09/2011] [Accepted: 01/17/2011] [Indexed: 11/20/2022]
Abstract
Studies have linked prostate cancer risk with insulin resistance and obesity. Circulating levels of adiponectin, a protein involved in insulin resistance and obesity, have been associated with prostate cancer risk. We studied the association of prostate cancer risk with haplotype tagging single nucleotide polymorphisms (SNPs) of the adiponectin (ADIPOQ) and adiponectin receptor 1 (ADIPOR1) chosen based on their functional relevance or association with other types of cancer. DNA samples from 465 cases and 441 healthy volunteers from New York City were genotyped for ADIPOQ rs266729, rs822395, rs822396, rs1501299, and rs2241766 SNPs and ADIPOR1 rs12733285, rs1342387, rs7539542, rs2232853, and rs10920531 SNPs. We performed both single- and multiple-SNP analyses. We found that rs12733285, rs7539452, rs266729, rs822395, rs822396, and rs1501299 were significantly associated with prostate cancer risk. Haplotype analysis confirmed these results and identified 5 ADIPOQ 4-SNP haplotypes and 1 ADIPOR1 2-SNP haplotype tightly associated with prostate cancer risk. Importantly, 2 ADIPOQ SNPs, rs266729 and rs1501299, have been previously associated with colon and breast cancer risk, respectively, in the same direction as in this study. These findings suggest that variants of the adiponectin pathway may be associated with susceptibility to various forms of common cancers and warrant validation studies.
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Affiliation(s)
- Virginia Kaklamani
- Cancer Genetics Program, Division of Hematology/Oncology, Department of Medicine and Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Nengjun Yi
- Section on Statistical Genetics, Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Kui Zhang
- Section on Statistical Genetics, Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Maureen Sadim
- Cancer Genetics Program, Division of Hematology/Oncology, Department of Medicine and Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Kenneth Offit
- Clinical Genetics Service, Memorial Sloan-Kettering Cancer Center, 1275 York Ave, New York, NY 10021
| | - Carole Oddoux
- Human Genetics Program, Department of Pediatrics, New York University Medical Center, New York, NY 10016
| | - Harry Ostrer
- Human Genetics Program, Department of Pediatrics, New York University Medical Center, New York, NY 10016
| | - Christos Mantzoros
- Division of Endocrinology and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center (BIDMC), Harvard Medical School, 330 Brookline Avenue, Stoneman 816, Boston, MA 02215
| | - Boris Pasche
- Division of Hematology/Oncology and Comprehensive Cancer Center, University of Alabama, Birmingham, AL 35294
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Abstract
Polymorphisms in the gene encoding adiponectin receptor 1 (AdipoR1) are associated with insulin resistance, fatty liver, increased risk for type 2 diabetes and cardiovascular disease. AdipoR1 is expressed in the central nervous system and in the olfactory mucosa of mice and humans. We therefore hypothesized that a common polymorphism in AdipoR1 might alter olfactory function. We investigated a group of 222 healthy subjects (male: n = 147, female: n = 75) for olfactory recognition, and genotyped them for the polymorphism rs6666089 in the human AdipoR1 gene. This polymorphism has been previously shown to be associated with insulin resistance. Olfactory recognition was tested using standardized sniffing sticks, and parameters of glucose metabolism and serum adiponectin levels were assessed. We found a significant olfactory impairment in carriers of the AdipoR1 polymorphism rs6666089 (olfactory recognition: GG: 89.4 ± 1.2%, GA: 86.9 ± 1.4%, AA: 77.2 ± 4.8%, additive model, P = 0.0004, adjusted for age). Adiponectin levels had no impact on olfactory recognition. Fasting plasma glucose, fasting plasma insulin, body mass index and HbA1c did not differ between the genotype groups. In conclusion, the presence of a genetic variation in AdipoR1 is associated with decreased olfactory recognition in healthy subjects. Adiponectin signalling may have an important role in olfactory function and regulation of appetite.
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Kaklamani VG, Wisinski KB, Sadim M, Gulden C, Do A, Offit K, Baron JA, Ahsan H, Mantzoros C, Pasche B. Variants of the adiponectin (ADIPOQ) and adiponectin receptor 1 (ADIPOR1) genes and colorectal cancer risk. JAMA 2008; 300:1523-31. [PMID: 18827209 PMCID: PMC2628475 DOI: 10.1001/jama.300.13.1523] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
CONTEXT Current epidemiological evidence suggests an association between obesity, hyperinsulinemia, and colorectal cancer risk. Adiponectin is a hormone secreted by the adipose tissue, and serum levels are inversely correlated with obesity and hyperinsulinemia. While there is evidence of an association between circulating adiponectin levels and colorectal cancer risk, no association between genes of the adiponectin pathway and colorectal cancer have been reported to date. OBJECTIVE To determine the association of 10 haplotype-tagging single-nucleotide polymorphisms (SNPs) of the adiponectin (ADIPOQ) and adiponectin receptor 1 (ADIPOR1) genes with colorectal cancer risk. DESIGN, SETTING, AND PATIENTS Two case-control studies including patients with a diagnosis of colorectal cancer and controls were recruited between 2000 and 2007. Case-control study 1 included a total of 441 patients with a diagnosis of colorectal cancer and 658 controls; both groups were of Ashkenazi Jewish ancestry and from New York, New York. Case-control study 2 included 199 patients with a diagnosis of colorectal cancer and 199 controls from Chicago, Illinois, matched 1:1 for sex, age, and ethnicity. MAIN OUTCOME MEASURES ADIPOQ and ADIPOR1 SNP frequency among cases and controls. RESULTS In study 1, after adjustment for age, sex, and SNPs from the same gene, 3 ADIPOQ SNPs and 1 ADIPOR1 SNP were associated with colorectal cancer risk: rs266729 (adjusted odds ratio [AOR], 0.72; 95% confidence interval [CI], 0.55-0.95) and rs822396 (AOR, 0.37; 95% CI, 0.14-1.00) were associated with decreased risk whereas rs822395 (AOR, 1.76; 95% CI, 1.09-2.84) and rs1342387 (AOR, 1.79; 95% CI, 1.18-2.72) were associated with increased risk. In study 2, after adjustment for age, sex, race, and SNPs from the same gene, the ADIPOQ SNP rs266729 was associated with a decreased colorectal cancer risk of similar magnitude as in study 1 (AOR, 0.52; 95% CI, 0.34-0.78). Combined analysis of both studies shows an association of rs266729 with decreased colorectal cancer risk (AOR, 0.73; 95% CI, 0.53-0.99). CONCLUSION The SNP rs266729, which tags the 5' flanking region of the ADIPOQ gene, is associated with decreased colorectal cancer risk.
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Affiliation(s)
- Virginia G Kaklamani
- Cancer Genetics Program, Division of Hematology and Oncology, Department of Medicine and Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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26
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López-Bermejo A, Botas-Cervero P, Ortega-Delgado F, Delgado E, García-Gil MM, Funahashi T, Ricart W, Fernández-Real JM. Association of ADIPOR2 with liver function tests in type 2 diabetic subjects. Obesity (Silver Spring) 2008; 16:2308-13. [PMID: 18719649 DOI: 10.1038/oby.2008.344] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Adiponectin protects against liver dysfunction in insulin-resistant states such as obesity and type 2 diabetes (T2DM), but the role of adiponectin receptors in this disorder is largely unknown. We studied whether common single-nucleotide polymorphisms (SNPs) in ADIPOR1 and ADIPOR2 are associated with liver function tests (LFTs) in human subjects with various degrees of insulin resistance. METHODS AND PROCEDURES Serum alanine (ALT) and aspartate (AST) aminotransferases, homeostasis model assessment of insulin resistance (HOMA-IR), -8503 G/A (rs6666089) and +5843 C/T (rs1342387) SNPs in ADIPOR1, -64,241 T/G (rs1029629) and +33447 C/T (rs1044471) SNPs in ADIPOR2 were assessed in 700 white subjects from a population-based study. RESULTS In nondiabetic subjects, the at-risk alleles for the common -64,241 T/G and +33447 C/T SNPs in ADIPOR2 were associated with increased circulating adiponectin (P < 0.05 to P < 0.005), but not with LFT. Conversely, in T2DM subjects (who are at risk for liver dysfunction), the same alleles were associated with increased serum ALT and AST (P < 0.05 to P < 0.0001), but not with circulating adiponectin. No significant associations with these parameters were evident for the common -8503 G/A and +5843 C/T SNPs in ADIPOR1. In a replication study, the -64,241 T/G and +33447 C/T SNPs in ADIPOR2 were associated with ALT and AST (P < 0.05 to P < 0.0001) in pooled obese and T2DM subjects. DISCUSSION Common SNPs in ADIPOR2 are associated with LFT in T2DM subjects, which suggests a possible role of this receptor in liver dysfunction associated with insulin resistance.
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Affiliation(s)
- Abel López-Bermejo
- Diabetes, Endocrinology and Nutrition Unit, Dr Josep Trueta Hospital, Girona, Spain.
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27
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Rabe K, Lehrke M, Parhofer KG, Broedl UC. Adipokines and insulin resistance. Mol Med 2008; 14:741-51. [PMID: 19009016 DOI: 10.2119/2008-00058.rabe] [Citation(s) in RCA: 512] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2008] [Accepted: 09/08/2008] [Indexed: 12/27/2022] Open
Abstract
Obesity is associated with an array of health problems in adult and pediatric populations. Understanding the pathogenesis of obesity and its metabolic sequelae has advanced rapidly over the past decades. Adipose tissue represents an active endocrine organ that, in addition to regulating fat mass and nutrient homeostasis, releases a large number of bioactive mediators (adipokines) that signal to organs of metabolic importance including brain, liver, skeletal muscle, and the immune system--thereby modulating hemostasis, blood pressure, lipid and glucose metabolism, inflammation, and atherosclerosis. In the present review, we summarize current data on the effect of the adipose tissue-derived hormones adiponectin, chemerin, leptin, omentin, resistin, retinol binding protein 4, tumor necrosis factor-alpha and interleukin-6, vaspin, and visfatin on insulin resistance.
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Affiliation(s)
- Katja Rabe
- Department of Internal Medicine II, University of Munich, Munich, Germany
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28
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Onat A, Hergenç G, Dursunoğlu D, Küçükdurmaz Z, Bulur S, Can G. Relatively high levels of serum adiponectin in obese women, a potential indicator of anti-inflammatory dysfunction: relation to sex hormone-binding globulin. Int J Biol Sci 2008; 4:208-14. [PMID: 18695734 PMCID: PMC2491727 DOI: 10.7150/ijbs.4.208] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2008] [Accepted: 07/19/2008] [Indexed: 12/18/2022] Open
Abstract
It is unclear whether serum adiponectin concentrations diminish linearly with increasing
adiposity and, if not, which factors codetermine this association. These issues were
investigated cross-sectionally in 1188 men and women, representative of middle-aged and elderly
Turkish adults. Serum total adiponectin was assayed by ELISA. Serum adiponectin values in men,
though declining significantly in transition from the bottom to the mid tertile of body mass
index (BMI) and waist circumference (WC), were similar in the two respective upper tertiles. In
women, serum adiponectin concentrations were not significantly different in any tertile of
these indices, were significantly correlated with BMI or WC within the low tertiles and not
within the two higher tertiles. In a linear regression analysis for WC (or BMI) in a subset of
the sample in which serum sex hormone-binding globulin (SHBG) was available and which
additionally comprised adiponectin, fasting insulin and other confounders, only insulin and, in
women SHBG, were significantly associated, but not adiponectin. In linear regression analyses
for covariates of adiponectin in two models comprising 12 variables, insulin and SHBG
concentrations were significantly associated in both genders though not BMI. Whereas in men
HDL-cholesterol and CRP were covariates of adiponectin (both p<0.01), SHBG and
apolipoprotein B positively associated in women (p<0.001), independent of BMI and
fasting insulin levels. Conclusions: Relationship between excess adiposity and adiponectin levels is
inconsistent in Turkish adults. Independently from obesity and hyperinsulinemia, serum
adiponectin discloses significant relationship with inflammatory markers and HDL only in men,
not in women in whom it is influenced by SHBG, with consequent attenuation of its
anti-inflammatory activities.
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Affiliation(s)
- Altan Onat
- Turkish Society of Cardiology, Istanbul University, Istanbul, Turkey.
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29
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Kaklamani VG, Sadim M, Hsi A, Offit K, Oddoux C, Ostrer H, Ahsan H, Pasche B, Mantzoros C. Variants of the adiponectin and adiponectin receptor 1 genes and breast cancer risk. Cancer Res 2008; 68:3178-84. [PMID: 18451143 DOI: 10.1158/0008-5472.can-08-0533] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Breast cancer risk is higher among obese women and women with diabetes. Adiponectin is a protein exclusively secreted by adipose tissue, circulating levels of which have been associated with breast cancer risk. Whether genetic variants within the adiponectin pathway are associated with breast cancer risk is unknown. To explore the association of genetic variants of the adiponectin (ADIPOQ) and adiponectin receptor 1 (ADIPOR1) genes with breast cancer risk, we conducted a case control study of female patients with breast cancer and healthy female controls from New York City recruited between 1999 and 2004. We genotyped 733 hospital-based breast cancer cases and 839 controls for 10 haplotype-tagging single nucleotide polymorphisms (SNP) of ADIPOQ and ADIPOR1. Two ADIPOQ SNPs (rs2241766 and rs1501299), which have been associated with circulating levels of adiponectin, were associated with breast cancer risk [rs1501299*GG: odd ratios (OR), 1.80; 95% confidence interval (95% CI), 1.14-2.85; rs2241766*TG: OR, 0.61; 95% CI, 0.46-0.80]. One ADIPOR1 SNP (rs7539542), which modulates expression of adiponectin receptor 1 mRNA, was also associated with breast cancer risk (OR, 0.51; 95% CI, 0.28-0.92). Based on the known function of rs2241766 and rs1501299, we categorized individuals by adiponectin signaling status and found that, when compared with high signalers, intermediate signalers had a 4.16-fold increase in breast cancer risk (95% CI, 0.49-35.19), and low signalers had a 6.56-fold increase in breast cancer risk (95% CI, 0.78-54.89; P(trend) = 0.001). This is the first report of an association between functionally relevant variants of the adiponectin pathway and breast cancer risk. The results warrant further studies of the adiponectin pathway in breast cancer.
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Affiliation(s)
- Virginia G Kaklamani
- Division of Hematology/Oncology, Department of Medicine, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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30
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Ruchat SM, Loos RJF, Rankinen T, Vohl MC, Weisnagel SJ, Després JP, Bouchard C, Pérusse L. Associations between glucose tolerance, insulin sensitivity and insulin secretion phenotypes and polymorphisms in adiponectin and adiponectin receptor genes in the Quebec Family Study. Diabet Med 2008; 25:400-6. [PMID: 18294218 DOI: 10.1111/j.1464-5491.2008.02396.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
AIMS Studies suggest that adiponectin (APM1) and its receptors 1 and 2 (AdipoR1 and AdipoR2) play an important role in the development of insulin resistance (IR). Our objective was to examine associations between APM1 (+45T>G, +276G>T and -3971A>G), AdipoR1 (-100G>T and -3882T>C) and AdipoR2 (-35361A>G and -1352G>A) genes single-nucleotide polymorphisms (SNPs) and adiponectin plasma levels, indicators of glucose tolerance, insulin sensitivity (IS) and insulin secretion. METHODS Six hundred and twenty-two non-diabetic subjects from the Quebec Family Study (QFS) underwent a 75-g oral glucose tolerance test (OGTT), with measurement of fasting adiponectin, glucose, insulin and C-peptide levels. Indices of glucose tolerance, IS and insulin secretion were derived from fasting and OGTT measurements. RESULTS Significant evidence of association was found between indices of IS and APM1 and AdipoR1 SNPs. The APM1 -3971G/G homozygotes exhibited a reduced area under the curve of insulin during the OGTT (P = 0.007) and higher Cederholm index (P = 0.01) compared to the A/A homozygotes. The APM1+45T>G variant was also associated with fasting (P = 0.002) and 2-h (P = 0.007) glucose values as well as with higher Cederholm index (P = 0.04) and disposition index (P = 0.02). Finally, the AdipoR1-3882T>C SNP was associated with fasting glucose (P = 0.03), the homeostasis model assessment for insulin resistance (P = 0.04) and an index of insulin secretion (P30/G30, P = 0.02). No evidence of association was found with plasma adiponectin levels. CONCLUSIONS These results provide evidence for an influence of common SNPs in the APM1 and AdipoR1 genes on different phenotypes of glucose and insulin metabolism associated with increased risk of type 2 diabetes.
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Affiliation(s)
- S-M Ruchat
- Department of Social and Preventive Medicine, Division of Kinesiology, Laval University, Quebec, Canada
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