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Agellon LB. Importance of fatty acid binding proteins in cellular function and organismal metabolism. J Cell Mol Med 2024; 28:e17703. [PMID: 36876733 PMCID: PMC10902576 DOI: 10.1111/jcmm.17703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/25/2023] [Accepted: 02/14/2023] [Indexed: 03/07/2023] Open
Abstract
Fatty acid binding proteins (Fabps) are small soluble proteins that are abundant in the cytosol. These proteins are known to bind a myriad of small hydrophobic molecules and have been postulated to serve a variety of roles, yet their precise functions have remained an enigma over half a century of study. Here, we consider recent findings, along with the cumulative findings contributed by many laboratories working on Fabps over the last half century, to synthesize a new outlook for what functions Fabps serve in cells and organisms. Collectively, the findings illustrate that Fabps function as versatile multi-purpose devices serving as sensors, conveyors and modulators to enable cells to detect and handle a specific class of metabolites, and to adjust their metabolic capacity and efficiency.
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Affiliation(s)
- Luis B. Agellon
- School of Human NutritionMcGill UniversitySte. Anne de BellevueQuebecCanada
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2
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Bonab LNH, Givi NJ, Jazi MM, Masjoudi S, Ghafari N, Daneshpour MS. Sex-specific association of FABP2 polymorphisms with the risk of obesity in the Tehran Cardio-Metabolic Genetic Study (TCGS). Gene 2023:147519. [PMID: 37263385 DOI: 10.1016/j.gene.2023.147519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 05/07/2023] [Accepted: 05/19/2023] [Indexed: 06/03/2023]
Abstract
FABP2 is one of the key genes involved in obesity development across different populations. However, there is no comprehensive report about the FABP2 contribution to obesity incidence among Iranians. Hence, the present study was designed to assess the probable role of FABP2 polymorphisms in obesity incidence in the Tehran Cardio- metabolic Genetic Study (TCGS) representative Iran population. Unrelated adults who had BMI information for at least 3 consecutive phases of the TCGS cohort were included. The control and case groups were defined as individuals who always had long-term persistent normal weight (20 < BMI < 25; n = 1526) and individuals who were long-term persistent obese (30 < BMI < 35; n = 1313), respectively. The logistic regression test was used to assess the possible association between SNPs located in and around the FABP2 gene with obesity. Also, we used Haploview and SHEsis to perform haplotype analysis to detect whether or not this chromosomal region is correlated with obesity. We found a gender-dependent association between the rs10857064 FABP2 and the risk of obesity. The presence of the rs10857064-G allele could significantly increase the risk of obesity only in women, not men (OR = 1.26; 95 % CI: 1.02-1.57; p = 0.03). Through haplotype analysis, we also detected that the TG haplotype containing rs7670862 and rs10857064 could significantly enhance the risk of obesity in women, further supporting the central role of rs10857064 in women's long-term obesity risk. In the current study, we revealed that rs10857064-G FABP2 can significantly predispose women to develop obesity. It highlights the importance of different genetic variants in both genders, which could help us to distinguish more efficient obesity screening tests and treatments based on gender in the future.
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Affiliation(s)
- Leila Najd Hassan Bonab
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Niloufar Javanrouh Givi
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Maryam Moazzam Jazi
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Sajedeh Masjoudi
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Nasim Ghafari
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Maryam S Daneshpour
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Meena K, Misra A, Vikram N, Ali S, Upadhyay AD, Luthra K. Genetic polymorphism of fatty acid binding protein-2 in hyperlipidemic Asian Indians in North India. Am J Hum Biol 2023; 35:e23834. [PMID: 36382874 DOI: 10.1002/ajhb.23834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Fatty acid binding protein-2 (FABP-2) is involved in the metabolism of lipids in the intestine. FABP-2 Ala54Thr polymorphism involves a transition of G to A at codon 54 of FABP-2, resulting in an amino acid substitution Ala54 to Thr54 and is associated with elevated fasting triglycerides in some hyperlipidemic populations. In current genome builds and gene databases the variant of the Ala54Thr FABP-2 (rs 1 799 883) is annotated as c.163A>G (p. Thr55Ala). AIM AND OBJECTIVE The status of this polymorphism in hyperlipidemic Asian Indians from North India has not been investigated. This study was aimed to evaluate the distribution of the polymorphic variants of the Ala54Thr FABP-2 and their association with lipids in hyperlipidemic subjects. METHODS Ala54Thr FABP-2 polymorphism in both hyperlipidemic (n = 210) and normolipidemic (n = 342) subjects was assessed by PCR-RFLP. RESULTS Ala54Thr genotypes and alleles distribution did not differ between the hyperlipidemic and normolipidemic groups. The heterozygous genotype FABP-2 Ala/Thr was significantly associated with higher levels of triglycerides and very low-density lipoproteins as compared to the homozygous variant (Thr/Thr) genotype and the wild type homozygous (Ala/Ala) genotype. CONCLUSIONS The heterozygous genotype FABP-2 Ala54Thr is a risk factor for the development of hypertriglyceridemia and increased levels of VLDL-c in Asian Indians from North India.
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Affiliation(s)
- Kiran Meena
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Anoop Misra
- Fortis CDOC Hospital for Diabetes and Allied Sciences, New Delhi, India
| | - Naval Vikram
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Shakir Ali
- Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Ashish Datt Upadhyay
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Kalpana Luthra
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
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Mannino GC, Mancuso E, Sbrignadello S, Morettini M, Andreozzi F, Tura A. Chemical Compounds and Ambient Factors Affecting Pancreatic Alpha-Cells Mass and Function: What Evidence? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16489. [PMID: 36554367 PMCID: PMC9778390 DOI: 10.3390/ijerph192416489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/02/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
The exposure to different substances present in the environment can affect the ability of the human body to maintain glucose homeostasis. Some review studies summarized the current evidence about the relationships between environment and insulin resistance or beta-cell dysfunction. Instead, no reviews focused on the relationships between the environment and the alpha cell, although in recent years clear indications have emerged for the pivotal role of the alpha cell in glucose regulation. Thus, the aim of this review was to analyze the studies about the effects of chemical, biological, and physical environmental factors on the alpha cell. Notably, we found studies focusing on the effects of different categories of compounds, including air pollutants, compounds of known toxicity present in common objects, pharmacological agents, and compounds possibly present in food, plus studies on the effects of physical factors (mainly heat exposure). However, the overall number of relevant studies was limited, especially when compared to studies related to the environment and insulin sensitivity or beta-cell function. In our opinion, this was likely due to the underestimation of the alpha-cell role in glucose homeostasis, but since such a role has recently emerged with increasing strength, we expect several new studies about the environment and alpha-cell in the near future.
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Affiliation(s)
- Gaia Chiara Mannino
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy
| | - Elettra Mancuso
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy
| | | | - Micaela Morettini
- Department of Information Engineering, Università Politecnica delle Marche, 60131 Ancona, Italy
| | - Francesco Andreozzi
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy
| | - Andrea Tura
- CNR Institute of Neuroscience, 35127 Padova, Italy
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Guevara-Ramírez P, Cadena-Ullauri S, Ruiz-Pozo VA, Tamayo-Trujillo R, Paz-Cruz E, Simancas-Racines D, Zambrano AK. Genetics, genomics, and diet interactions in obesity in the Latin American environment. Front Nutr 2022; 9:1063286. [PMID: 36532520 PMCID: PMC9751379 DOI: 10.3389/fnut.2022.1063286] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 10/25/2022] [Indexed: 08/25/2023] Open
Abstract
Obesity is a chronic disease characterized by abnormal or excessive fat accumulation that could impact an individual's health; moreover, the World Health Organization (WHO) has declared obesity a global epidemic since 1997. In Latin America, in 2016, reports indicated that 24.2% of the adult population was obese. The environmental factor or specific behaviors like dietary intake or physical activity have a vital role in the development of a condition like obesity, but the interaction of genes could contribute to that predisposition. Hence, it is vital to understand the relationship between genes and disease. Indeed, genetics in nutrition studies the genetic variations and their effect on dietary response; while genomics in nutrition studies the role of nutrients in gene expression. The present review represents a compendium of the dietary behaviors in the Latin American environment and the interactions of genes with their single nucleotide polymorphisms (SNPs) associated with obesity, including the risk allele frequencies in the Latin American population. Additionally, a bibliographical selection of several studies has been included; these studies examined the impact that dietary patterns in Latin American environments have on the expression of numerous genes involved in obesity-associated metabolic pathways.
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Affiliation(s)
- Patricia Guevara-Ramírez
- Centro de Investigación Genética y Genómica, Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito, Ecuador
| | - Santiago Cadena-Ullauri
- Centro de Investigación Genética y Genómica, Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito, Ecuador
| | - Viviana A. Ruiz-Pozo
- Centro de Investigación Genética y Genómica, Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito, Ecuador
| | - Rafael Tamayo-Trujillo
- Centro de Investigación Genética y Genómica, Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito, Ecuador
| | - Elius Paz-Cruz
- Centro de Investigación Genética y Genómica, Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito, Ecuador
| | - Daniel Simancas-Racines
- Centro de Investigación en Salud Pública y Epidemiología Clínica (CISPEC), Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito, Ecuador
| | - Ana Karina Zambrano
- Centro de Investigación Genética y Genómica, Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito, Ecuador
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Ex vivo exposures to arsenite and its methylated trivalent metabolites alter gene transcription in mouse sperm cells. Toxicol Appl Pharmacol 2022; 455:116266. [DOI: 10.1016/j.taap.2022.116266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/18/2022] [Accepted: 10/01/2022] [Indexed: 11/21/2022]
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Yang Y, Tian Z, Song M, Ma C, Ge Z, Li P. Detecting the Critical States of Type 2 Diabetes Mellitus Based on Degree Matrix Network Entropy by Cross-Tissue Analysis. ENTROPY (BASEL, SWITZERLAND) 2022; 24:1249. [PMID: 36141135 PMCID: PMC9498060 DOI: 10.3390/e24091249] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 08/18/2022] [Accepted: 09/02/2022] [Indexed: 06/16/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a metabolic disease caused by multiple etiologies, the development of which can be divided into three states: normal state, critical state/pre-disease state, and disease state. To avoid irreversible development, it is important to detect the early warning signals before the onset of T2DM. However, detecting critical states of complex diseases based on high-throughput and strongly noisy data remains a challenging task. In this study, we developed a new method, i.e., degree matrix network entropy (DMNE), to detect the critical states of T2DM based on a sample-specific network (SSN). By applying the method to the datasets of three different tissues for experiments involving T2DM in rats, the critical states were detected, and the dynamic network biomarkers (DNBs) were successfully identified. Specifically, for liver and muscle, the critical transitions occur at 4 and 16 weeks. For adipose, the critical transition is at 8 weeks. In addition, we found some "dark genes" that did not exhibit differential expression but displayed sensitivity in terms of their DMNE score, which is closely related to the progression of T2DM. The information uncovered in our study not only provides further evidence regarding the molecular mechanisms of T2DM but may also assist in the development of strategies to prevent this disease.
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Affiliation(s)
- Yingke Yang
- School of Mathematics and Statistics, Henan University of Science and Technology, Luoyang 471023, China
| | - Zhuanghe Tian
- School of Mathematics and Statistics, Henan University of Science and Technology, Luoyang 471023, China
| | - Mengyao Song
- School of Mathematics and Statistics, Henan University of Science and Technology, Luoyang 471023, China
| | - Chenxin Ma
- School of Mathematics and Statistics, Henan University of Science and Technology, Luoyang 471023, China
| | - Zhenyang Ge
- College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China
| | - Peiluan Li
- School of Mathematics and Statistics, Henan University of Science and Technology, Luoyang 471023, China
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Zeinalian R, Ahmadikhatir S, Esfahani EN, Namazi N, Larijani B. The roles of personalized nutrition in obesity and diabetes management: a review. J Diabetes Metab Disord 2022; 21:1119-1127. [PMID: 35673489 PMCID: PMC9167367 DOI: 10.1007/s40200-022-01016-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 02/28/2022] [Indexed: 11/27/2022]
Abstract
Background & Aims Nutrition is one of main environmental factor affecting obesity and its related complications such as diabetes and dyslipidemia. Due to growing prevalence of obesity across the world, it seems that nutritional advice alone is not able to combat this health problem. The present overview aimed to summarize the roles of personalized nutrition (PN) in obesity and diabetes management. Methods Scopus, PubMed and Google scholar were searched up to February 2021 to find relevant studies with English language in which the roles of PN in obesity and diabetes management were examined. Results Recent evidence revealed the importance of gene-environment interactions for management of diabetes mellitus and obesity. Moreover, microbiome research showed that personalized diet based on a combination of clinical and microbial features is likely to improve responses to therapeutic interventions. Epigenetics as well as genetic and environmental factors can also contribute to the treatment. In addition, articles showed significant roles of epigenetics and gut microbiome on providing an individualized diet for obese and diabetic patients. Conclusion PN compare to conventional diet can better improve metabolic status in obese and diabetic patients. Considering genetic differences and microbiome patterns along with environmental factors and their interactions are recommended for obesity and diabetes management. This approach can increase success in promoting health and preventing complications related to diabetes and obesity.
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Affiliation(s)
- Reihaneh Zeinalian
- Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shonaz Ahmadikhatir
- Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ensieh Nasli Esfahani
- Personalized Medicine Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Nazli Namazi
- Diabetes Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
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Bhori M, Rastogi V, Tungare K, Marar T. A review on interplay between obesity, lipoprotein profile and nutrigenetics with selected candidate marker genes of type 2 diabetes mellitus. Mol Biol Rep 2021; 49:687-703. [PMID: 34669123 DOI: 10.1007/s11033-021-06837-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/12/2021] [Indexed: 12/06/2022]
Abstract
BACKGROUND Type 2 diabetes mellitus, a rapidly growing epidemic, and its frequently related complications demand global attention. The two factors commonly attributed to the epidemic are genetic factors and environmental factors. Studies indicate that the genetic makeup at an individual level and the environmental aspects influence the occurrence of the disease. However, there is insufficiency in understanding the mechanisms through which the gene mutations and environmental components individually lead to T2DM. Also, discrepancies have often been noted in the association of gene variants and type 2 diabetes when the gene factor is examined as a sole attribute to the disease. STUDY In this review initially, we have focused on the proposed ways through which CAPN10, FABP2, GLUT2, TCF7L2, and ENPP1 variants lead to T2DM along with the inconsistencies observed in the gene-disease association. The article also emphasizes on obesity, lipoprotein profile, and nutrition as environmental factors and how they lead to T2DM. Finally, the main objective is explored, the environment-gene-disease association i.e. the influence of each environmental factor on the aforementioned specific gene-T2DM relationship to understand if the disease-causing capability of the gene variants is exacerbated by environmental influences. CONCLUSION We found that environmental factors may influence the gene-disease relationship. Reciprocally, the genetic factors may alter the environment-disease relationship. To precisely conclude that the two factors act synergistically to lead to T2DM, more attention has to be paid to the combined influence of the genetic variants and environmental factors on T2DM occurrence instead of studying the influence of the factors separately.
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Affiliation(s)
- Mustansir Bhori
- School of Biotechnology and Bioinformatics, D. Y. Patil Deemed To Be University, Navi Mumbai, 400614, India
| | - Varuni Rastogi
- School of Biotechnology and Bioinformatics, D. Y. Patil Deemed To Be University, Navi Mumbai, 400614, India
| | - Kanchanlata Tungare
- School of Biotechnology and Bioinformatics, D. Y. Patil Deemed To Be University, Navi Mumbai, 400614, India.
| | - Thankamani Marar
- School of Biotechnology and Bioinformatics, D. Y. Patil Deemed To Be University, Navi Mumbai, 400614, India
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Xu XL, Mao HG, Liu HH, Dong XY, Zou XT, Yin ZZ. Bioinformatics analysis and tissue-specific expression of intestinal-type fatty acid binding protein in domestic pigeons (Columba livia). JOURNAL OF APPLIED ANIMAL RESEARCH 2020. [DOI: 10.1080/09712119.2020.1735397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Xiu Li Xu
- Animal Science College, Zhejiang University, Hangzhou, People’s Republic of China
| | - Hai Guang Mao
- Animal Science College, Zhejiang University, Hangzhou, People’s Republic of China
| | - Hong Hua Liu
- Animal Science College, Zhejiang University, Hangzhou, People’s Republic of China
| | - Xin Yang Dong
- Animal Science College, Zhejiang University, Hangzhou, People’s Republic of China
| | - Xiao Ting Zou
- Animal Science College, Zhejiang University, Hangzhou, People’s Republic of China
| | - Zhao Zheng Yin
- Animal Science College, Zhejiang University, Hangzhou, People’s Republic of China
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11
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Han TK, So WY. Effects of FABP2 Ala54Thr gene polymorphism on obesity and metabolic syndrome in middle-aged Korean women with abdominal obesity. Cent Eur J Public Health 2019; 27:37-43. [PMID: 30927395 DOI: 10.21101/cejph.a5077] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Asians (including Chinese, Japanese and Koreans), who generally have a relatively smaller body size and a lower mean body mass index (BMI), have a relatively higher risk of developing android-type obesity than westerners. Substitution of alanine for threonine (Ala54Thr) on the FABP2 gene (rs 1799883) is related to insulin resistance and obesity. However, few studies have examined this substitution in Koreans, and the number of Korean subjects in those studies is limited. For this reason, we investigated the differences between the FABP2 Ala54Thr polymorphism and obesity, hemodynamic variables, blood lipid profile results, and insulin resistance among middle-aged Korean women with abdominal obesity. METHODS We studied 243 middle-aged community-dwelling Korean women with abdominal obesity from Gyeonggi Province, Republic of Korea, who had no history of taking chronic medications. We examined each subject (n = 243) for the presence of FABP2 Ala54Thr polymorphism using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Subjects were also examined for obesity hemodynamic variables (n = 243), lipid profiles (n = 142), and insulin resistance (n = 142). RESULTS Of the 243 subjects, 117 had AA ("normal") homozygotic genotype, 100 had AT heterozygotic genotype, and 26 had TT homozygotic genotype for the FABP2 Ala54Thr polymorphism. The AT heterozygotic individuals had a significantly higher mean waist-to-hip ratio, abdominal fat area, and visceral fat area than individuals with other genotypes. TT homozygotic individuals had higher mean triglyceride and fasting glucose levels than individuals with other genotypes. CONCLUSIONS The results of this study show that the FABP2 Ala54Thr polymorphism was associated with central obesity and obesity-related metabolic syndrome among middle-aged Korean women.
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Affiliation(s)
- Tae-Kyung Han
- Physical Education, College of Art and Physical Education, Andong National University, Andong, Republic of Korea
| | - Wi-Young So
- Sports and Health Care, College of Humanities and Arts, Korea National University of Transportation, Chungju-si, Republic of Korea
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Liu PJ, Liu YP, Qin HK, Xing T, Li SS, Bao YY. Effects of polymorphism in FABP2 Ala54Thr on serum lipids and glycemic control in low glycemic index diets are associated with gender among Han Chinese with type 2 diabetes mellitus. Diabetes Metab Syndr Obes 2019; 12:413-421. [PMID: 30988637 PMCID: PMC6441458 DOI: 10.2147/dmso.s196738] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND/AIMS Low glycemic index (GI) diets may have beneficial effects on glycemic control and serum lipid levels in patients with type 2 diabetes, but whether its effect is affected by polymorphisms of genes associated with lipid metabolism remains unclear. This study investigated whether the effects of a low-GI diet on serum lipids and glycemic control in patients with diabetes are associated with polymorphisms of FABP2 Ala54Thr (rs1799883). METHODS A retrospective study was conducted involving 165 patients with type 2 diabetes mellitus (T2DM) who participated in two completed trials. Parameters reflecting the glycemic control, inflammatory factors, and fasting plasma lipids before and after intervention were measured, and the polymorphism of rs1799883 for each participant was genotyped using a Mas-sARRAY. Differences between the genotypes of rs1799883 before or after the intervention were compared, and changes in the lipid profiles, glycemic control, inflammatory profiles, and dietary intake from baseline were analyzed using an analysis of covariance (generalized linear model). RESULTS When the data were analyzed as a whole, after 4-5 weeks of similar low-GI diet intervention, we found that the decrease of triglycerides (TG) in the homozygous Ala54 carriers was more significant than that in the Thr54 allele carriers ([-0.58±1.24] vs [-0.14±1.08], P=0.015) with the adjustment for potential confounding factors; furthermore, compared with the Thr54 carriers, there was a significant trend in the decrease of total cholesterol (TC) in the homozygous Ala54 carriers (P=0.057). Subgroup analysis revealed that in women the homozygous Ala54 carriers exhibited a significant decrease of serum TG, TC, fasting blood glucose, and glycated albumin in women, but this was not noted in men. CONCLUSION The effect of FABP2 Ala54Thr polymorphism on response to blood lipids and gly-cemic control in low-GI diets is associated with gender among Han Chinese patients with T2DM.
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Affiliation(s)
- Peng Ju Liu
- Departments of Clinical Nutrition, Peking Union Medical College Hospital, China Academic Medical Science and Peking Union Medical College, Beijing, People's Republic of China, ;
| | - Yan Ping Liu
- Departments of Clinical Nutrition, Peking Union Medical College Hospital, China Academic Medical Science and Peking Union Medical College, Beijing, People's Republic of China, ;
| | - Hui Kun Qin
- Department of Nutrition, Pinggu Hospital of Traditional Chinese Medicine, Beijing, People's Republic of China
| | - Tong Xing
- Department of Nutrition, Pinggu Hospital of Traditional Chinese Medicine, Beijing, People's Republic of China
| | - Shan Shan Li
- Departments of Clinical Nutrition, Peking Union Medical College Hospital, China Academic Medical Science and Peking Union Medical College, Beijing, People's Republic of China, ;
| | - Yuan Yuan Bao
- Departments of Clinical Nutrition, Peking Union Medical College Hospital, China Academic Medical Science and Peking Union Medical College, Beijing, People's Republic of China, ;
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Garcés Da Silva MF, Guarin YA, Carrero Y, Stekman H, Núñez Bello ML, Hernández C, Apitz R, Fernández-Mestre M, Camejo G. Postprandial Hypertriglyceridemia Is Associated with the Variant 54 Threonine FABP2 Gene. J Cardiovasc Dev Dis 2018; 5:E47. [PMID: 30217061 PMCID: PMC6162774 DOI: 10.3390/jcdd5030047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 09/10/2018] [Accepted: 09/10/2018] [Indexed: 11/17/2022] Open
Abstract
Purpose: Fasting or postprandial hypertriglyceridemia is considered an independent cardiovascular disease (CVD) risk factor. The intestinal fatty acid binding protein (FABP2) is involved in the intracellular transport and metabolism of fatty acids. The presence of the Ala54Thr polymorphism of the FABP2 gene appears to be involved in postprandial hypertriglyceridemia. We explored the possible association of the Ala54Thr polymorphism with fat intolerance in apparently healthy, fasting, normolipidemic subjects with normal body-mass index and without diabetes. Methodology: A total of 158 apparently healthy individuals were classified as fat tolerant (n = 123) or intolerant (n = 35) according to their response (plasma triglycerides) to an oral abbreviated tolerance test with blood samples taken at 0, 2 and 4 h. At 0 h, all subjects ingested 26.3 g of fats. Presence of the Ala54Thr polymorphism of the FABP2 gene was evaluated by polymerase chain reaction⁻restriction fragment length (PCR⁻RFLP). Results: The group with fat intolerance (postprandial hypertriglyceridemia group) showed an increased frequency of the Thr54Thr genotype when compared with the group with normal fat tolerance (control group) (23% vs. 4%, respectively, OR: 16.53, 95% CI: 4.09⁻66.82, p: 0.0001, pc: 0.0003). Carriers of at least one Thr54 allele were up to six times more prevalent in the fat intolerant group than in the non-carriers. (OR: 6.35; 95% CI: 1.86⁻21.59, p: 0.0003, pc: 0.0009). The levels of plasma triglycerides (Tg) at 4 h after the test meal were higher in carriers of at least one 54Thr allele than in carriers of the Ala54 allele (p < 0.05). Conclusions: There is a significant association between postprandial hypertriglyceridemia and the presence of at least one 54Thr allele of the FABP2 gene. In addition, subjects with this genotype showed an increased ratio of Tg/HDL-cholesterol. This parameter is a marker of increased CVD risk and insulin resistance.
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Affiliation(s)
- María Fatima Garcés Da Silva
- Associated Research Laboratorio de Investigaciones Básicas y Aplicadas, Departamento de Bioquímica, Escuela de Bioanálisis, Facultad de Medicina, Universidad Central de Venezuela, Caracas 48321, Venezuela.
| | - Yamil Adrian Guarin
- Associated Research Laboratorio de Investigaciones Básicas y Aplicadas, Departamento de Bioquímica, Escuela de Bioanálisis, Facultad de Medicina, Universidad Central de Venezuela, Caracas 48321, Venezuela.
| | - Yenny Carrero
- Associated Research Laboratorio de Investigaciones Básicas y Aplicadas, Departamento de Bioquímica, Escuela de Bioanálisis, Facultad de Medicina, Universidad Central de Venezuela, Caracas 48321, Venezuela.
| | - Hilda Stekman
- Associated Research Laboratorio de Investigaciones Básicas y Aplicadas, Departamento de Bioquímica, Escuela de Bioanálisis, Facultad de Medicina, Universidad Central de Venezuela, Caracas 48321, Venezuela.
| | - María Luisa Núñez Bello
- Associated Research Laboratorio de Investigaciones Básicas y Aplicadas, Departamento de Bioquímica, Escuela de Bioanálisis, Facultad de Medicina, Universidad Central de Venezuela, Caracas 48321, Venezuela.
| | - Celsy Hernández
- Associated Research Laboratorio de Investigaciones Básicas y Aplicadas, Departamento de Bioquímica, Escuela de Bioanálisis, Facultad de Medicina, Universidad Central de Venezuela, Caracas 48321, Venezuela.
| | - Rafael Apitz
- National Academy of Medicine, Caracas 41421, Venezuela.
| | - Mercedes Fernández-Mestre
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas, Caracas 21827, Venezuela.
| | - Germán Camejo
- Associated Research Clinical Chemistry Laboratory, Department Laboratory Medicine, Karolinska Institute, 14186 Stockholm, Sweden.
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Synergistical action of the β2 adrenoceptor and fatty acid binding protein 2 polymorphisms on the loss of glomerular filtration rate in Chinese patients with type 2 diabetic nephropathy. Int Urol Nephrol 2018; 50:715-723. [PMID: 29404926 DOI: 10.1007/s11255-018-1812-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Accepted: 01/29/2018] [Indexed: 10/18/2022]
Abstract
PURPOSE Since altered sympathetic nerve activity and insulin resistance are implicated in the pathogenesis of type 2 diabetic nephropathy, we investigated the effect of polymorphic Arg16Gly and Gln27Glu in the β2 adrenoceptor gene and Ala54Thr in the fatty acid binding protein 2 gene on the estimated glomerular filtration rate (eGFR) in Chinese patients with the above disease. METHODS A total of 552 diabetic subjects recruited from annual health examinations were studied. The eGFR was calculated from the Modification of Diet in Renal Disease equation for the Chinese. Plasma norepinephrine level and genotype were determined by high-performance liquid chromatography-tandem mass spectrometry and TaqMan method, respectively. Holter-derived heart rate viability (HRV) and the MRI-generated renal apparent diffusion coefficient (ADC) were evaluated. RESULTS The Gly16Gly and Thr54Thr homozygotes had significantly higher microalbuminuria and lower eGFR against other genotypes in their individual polymorphism. Besides, the Gly16Gly variant exhibited markedly elevated norepinephrine level, whereas indicative of insulin resistance was increased in the Thr54Thr one. Multiple linear regression analysis further confirmed the independent genetic effect on the eGFR. Moreover, multifactor dimensionality reduction method detected a gene-gene synergistic action that subjects with the Gly16Gly/Thr54Thr genotype were exposed to higher risk of eGFR loss. Finally, these findings were accompanied by lower HRV and ADC, indicating sympathetically mediated hemodynamic changes. CONCLUSIONS By uncovering the genetic component of the coherent interplay between the elevated sympathetic nerve activity and metabolic disorders, our observations might promote the development of novel personalized prevention and management strategies against the diabetic nephropathy, especially in the genetically susceptible individuals.
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Gonzalez-Becerra K, Ramos-Lopez O, Garcia-Cazarin ML, Barron-Cabrera E, Panduro A, Martinez-Lopez E. Associations of the lipid genetic variants Thr54 ( FABP2) and -493T ( MTTP) with total cholesterol and low-density lipoprotein cholesterol levels in Mexican subjects. J Int Med Res 2018; 46:1467-1476. [PMID: 29338565 PMCID: PMC6091818 DOI: 10.1177/0300060517748518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective Mexico has one of the world’s highest rates of obesity, which is influenced by lipid-genetic and lifestyle factors. This study aimed to determine whether FABP2 (Ala54Thr) and MTTP (-493 G/T) genetic polymorphisms are associated with metabolic disorders in Mexican subjects. Methods A total of 523 subjects participated in a cross-sectional study. Genotyping for FABP2 and MTTP was performed using real-time RT-PCR. Biochemical and anthropometric data were evaluated. Results The genetically at-risk group (Thr54/-493T) was associated with significantly higher total and low-density lipoprotein cholesterol levels (difference between genetically at-risk group and wild-type group: 10.6 mg/dL and 8.94 mg/dL, respectively). Carriers within the genetically at-risk group had a significantly higher prevalence rate of hypercholesterolaemia (42.5% vs. 32.0%) and higher LDL-C levels (37.6% vs. 26.4%) than did non-carriers. Conclusions Subjects who are genetically at risk (Thr54/-493T) have higher total cholesterol levels, low-density lipoprotein cholesterol levels, and prevalence rate of hypercholesterolaemia. These findings highlight the importance of basing nutritional intervention strategies for preventing and treating chronic diseases on individual genetic characteristics.
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Affiliation(s)
- Karina Gonzalez-Becerra
- 1 Medical Molecular Biology Service, "Fray Antonio Alcalde" Civil Hospital of Guadalajara, Department of Molecular Biology and Genomics, 42571 University Center of Health Sciences, University of Guadalajara , Guadalajara, Jalisco, Mexico
| | - Omar Ramos-Lopez
- 1 Medical Molecular Biology Service, "Fray Antonio Alcalde" Civil Hospital of Guadalajara, Department of Molecular Biology and Genomics, 42571 University Center of Health Sciences, University of Guadalajara , Guadalajara, Jalisco, Mexico
| | | | - Elisa Barron-Cabrera
- 1 Medical Molecular Biology Service, "Fray Antonio Alcalde" Civil Hospital of Guadalajara, Department of Molecular Biology and Genomics, 42571 University Center of Health Sciences, University of Guadalajara , Guadalajara, Jalisco, Mexico
| | - Arturo Panduro
- 1 Medical Molecular Biology Service, "Fray Antonio Alcalde" Civil Hospital of Guadalajara, Department of Molecular Biology and Genomics, 42571 University Center of Health Sciences, University of Guadalajara , Guadalajara, Jalisco, Mexico
| | - Erika Martinez-Lopez
- 1 Medical Molecular Biology Service, "Fray Antonio Alcalde" Civil Hospital of Guadalajara, Department of Molecular Biology and Genomics, 42571 University Center of Health Sciences, University of Guadalajara , Guadalajara, Jalisco, Mexico
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Wolfarth B, Rankinen T, Hagberg JM, Loos RJF, Pérusse L, Roth SM, Sarzynski MA, Bouchard C. Advances in exercise, fitness, and performance genomics in 2013. Med Sci Sports Exerc 2014; 46:851-9. [PMID: 24743105 DOI: 10.1249/mss.0000000000000300] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The most significant and scientifically sound articles in exercise genomics that were published in 2013 are reviewed in this report. No article on the genetic basis of sedentary behavior or physical activity level was identified. A calcineurin- and alpha actinin-2-based mechanism has been identified as the potential molecular basis for the observed lower muscular strength and power in alpha actinin-3-deficient individuals. Although baseline muscle transcriptomic signatures were found to be associated with strength training-induced muscle hypertrophy, no predictive genomic variants could be identified as of yet. One study found no clear evidence that the inverse relation between physical activity level and incident CHD events was influenced by 58 genomic variants clustered into four genetic scores. Lower physical activity level in North American populations may be driving the apparent risk of obesity in fat mass- and obesity-associated gene (FTO)-susceptible individuals compared with more active populations. Two large studies revealed that common genetic variants associated with baseline levels of plasma HDL cholesterol and triglycerides are not clear predictors of changes induced by interventions focused on weight loss, diet, and physical activity behavior. One large study from Japan reported that a higher fitness level attenuated the arterial stiffness-promoting effect of the Ala54 allele at the fatty acid binding protein 2 locus, which is a controversial finding because previous studies have suggested that Thr54 was the risk allele. Using transcriptomics to generate genomic targets in an unbiased manner for subsequent DNA sequence variants studies appears to be a growing trend. Moreover, exercise genomics is rapidly embracing gene and pathway analysis to better define the underlying biology and provide a foundation for the study of human variation.
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Affiliation(s)
- Bernd Wolfarth
- 1Preventive and Rehabilitative Sports Medicine, Technical University Munich, Munich, GERMANY; 2Human Genomics Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA; 3Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD; 4The Genetics of Obesity and Related Metabolic Traits Program, The Charles Bronfman Institute of Personalized Medicine, The Mindich Child Health and Development Institute, The Icahn School of Medicine at Mount Sinai, New York, NY; and 5Department of Kinesiology, Laval University, Ste-Foy, Québec, CANADA
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Qiu CJ, Ye XZ, Yu XJ, Peng XR, Li TH. Association between FABP2 Ala54Thr polymorphisms and type 2 diabetes mellitus risk: a HuGE Review and Meta-Analysis. J Cell Mol Med 2014; 18:2530-5. [PMID: 25388378 PMCID: PMC4302657 DOI: 10.1111/jcmm.12385] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 06/30/2014] [Indexed: 12/31/2022] Open
Abstract
Many studies have examined the association between the FABP2 (rs1799883) Ala54Thr gene polymorphism and type 2 diabetes mellitus risk (T2DM) in various populations, but their results have been inconsistent. To assess this relationship more precisely, A HuGE review and meta-analysis were performed. The PubMed and CNKI database was searched for case-control studies published up to April 2014. Data were extracted and pooled odds ratios (OR) with 95% confidence intervals (CI) were calculated. Ultimately, 13 studies, comprising 2020 T2DM cases and 2910 controls were included. Overall, for the Thr carriers (Ala/Thr and Thr/Thr) versus the wild-type homozygotes (Ala/Ala), the pooled OR was 1.18 (95% CI = 1.04–1.34, P = 0.062 for heterogeneity), for Thr/Thr versus Ala/Ala the pooled OR was 1.17 (95% CI = 1.05–1.41 P = 0.087 for heterogeneity). In the stratified analysis by ethnicity, the significantly risks were found among Asians but not Caucasians. This meta-analysis suggests that the FABP2 (rs1799883) Ala54Thr polymorphisms are associated with increased susceptibility to T2DM risk among Asians but not Caucasians.
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Affiliation(s)
- Chun-Jian Qiu
- Department of Endocrinology, No. 81 Hospital of PLA, Nanjing, China
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Abbas S, Raza ST, Chandra A, Rizvi S, Ahmed F, Eba A, Mahdi F. Association of ACE, FABP2 and GST genes polymorphism with essential hypertension risk among a North Indian population. Ann Hum Biol 2014; 42:461-9. [DOI: 10.3109/03014460.2014.968206] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abbas S, Raza ST, Chandra A, Singh L, Rizvi S, Eba A, Ahmed F, Mahdi F. Polymorphism of FABP2 and PPARG2 genes in risk prediction of cataract among North Indian population. Meta Gene 2014; 2:307-13. [PMID: 25606413 PMCID: PMC4287883 DOI: 10.1016/j.mgene.2014.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 02/03/2014] [Accepted: 02/18/2014] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Cataract is the leading cause of bilateral blindness in India. It has been reported that cataract is responsible for 50-80% of the bilaterally blind in the country. Cataract formation is a natural part of the ageing process. At present, adequate data are not available regarding the FABP2 and PPARG2 gene polymorphisms and their susceptibility with cataract cases in the North Indian population. Thus, the present study was carried out to investigate the association of FABP2 and PPARG2 gene polymorphisms with cataract cases and controls. MATERIALS AND METHODS This study includes 130 cataract cases and 118 controls. FABP2 and PPARG2 gene polymorphisms in cases and controls were evaluated by PCR-RFLP. RESULTS Frequencies of Ala54Ala, Ala54Thr and Thr54Thr genotypes in FABP2 gene in cataract cases and controls were 50.76%, 39.23%, 10% and 25.42%, 61.86%, 12.71% respectively. The PPARG2 gene CC, CG, GG genotype frequencies were 11.53%, 87.69% and 0.76% in cases and 21.18%, 39.83% and 38.98% in healthy controls respectively. Significant differences were observed in the frequencies of FABP2 Ala54Ala, Ala54Thr genotype (p < 0.05) and PPARG2 CC, CG, GG genotype (p < 0.05) between cases and controls. CONCLUSION The findings of this study suggest that FABP2 and PPARG2 gene polymorphisms can be an informative marker for early identification of population at risk of cataract. The potential role of FABP2 and PPARG2 gene polymorphisms as a marker of susceptibility to cataract needs further studies in a larger number of patients.
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Affiliation(s)
- Shania Abbas
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, Lucknow 226003, India
| | - Syed Tasleem Raza
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, Lucknow 226003, India
| | - Anu Chandra
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, Lucknow 226003, India
| | - Luxmi Singh
- Department of Ophthalmology, Era's Lucknow Medical College and Hospital, Lucknow 226003, India
| | - Saliha Rizvi
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, Lucknow 226003, India
| | - Ale Eba
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, Lucknow 226003, India
| | - Faisal Ahmed
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, Lucknow 226003, India
| | - Farzana Mahdi
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, Lucknow 226003, India
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Alharbi KK, Khan IA, Bazzi MD, Al-Daghri NM, Hasan TN, Alnbaheen MS, Alharbi FK, Al-Sheikh YA, Syed R, Aboul-Soud MA. A54T polymorphism in the fatty acid binding protein 2 studies in a Saudi population with type 2 diabetes mellitus. Lipids Health Dis 2014; 13:61. [PMID: 24690233 PMCID: PMC4032166 DOI: 10.1186/1476-511x-13-61] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Accepted: 03/26/2014] [Indexed: 11/28/2022] Open
Abstract
Background Fatty acid-binding protein 2 (FABP2) is an intracellular protein expressed exclusively in the enterocytes of proximal small intestine. FABP2 has a high affinity for saturated and unsaturated long-chain fatty acids and is believed to be involved in the absorption and transport of dietary fatty acids. Methods This is a case–control study conceded in 438 T2DM cases and 460 subjects with normal glucose levels and non-obese considered as healthy controls. Allelic discrimination was performed using TaqMan single-nucleotide polymorphism was carried out by real time-polymerase chain reaction (RT-PCR) assays using purified DNA. Results Clinical data and anthropometric measurements except age, glucose levels and lipid profile of the patients were significantly different from those of the controls (p < 0.05). Statistical analyses failed to show any type of significant association of the polymorphism between cases and controls. However logistic regression analyses was suggests that the TT genotype is significantly associated with male patients (p = 0.001). None of the allele or genotypes of FABP2 A54T was associated with T2DM cases versus the controls (AT genotype, OR = 0.85 (0.64-1.12), p = 0.25; TT genotype, OR = 0.66 (0.39-1.11), p = 0.11; T allele, 0.82 (0.67-1.02), p = 0.08). Conclusion In conclusion, this study suggests that the above named variant in FABP2 gene is not potential contributor to the risk of T2DM and related traits in a Saudi population. However TT genotype is a risk factor for the disease in males.
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Affiliation(s)
| | - Imran Ali Khan
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, P,O, Box 10219, Riyadh 11433, Kingdom of Saudi Arabia.
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Coffey R, Nam H, Knutson MD. Microarray analysis of rat pancreas reveals altered expression of Alox15 and regenerating islet-derived genes in response to iron deficiency and overload. PLoS One 2014; 9:e86019. [PMID: 24465846 PMCID: PMC3897611 DOI: 10.1371/journal.pone.0086019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 12/04/2013] [Indexed: 12/27/2022] Open
Abstract
It is well known that iron overload can result in pancreatic iron deposition, beta-cell destruction, and diabetes in humans. Recent studies in animals have extended the link between iron status and pancreatic function by showing that iron depletion confers protection against beta-cell dysfunction and diabetes. The aim of the present study was to identify genes in the pancreas that are differentially expressed in response to iron deficiency or overload. Weanling male Sprague-Dawley rats (n = 6/group) were fed iron-deficient, iron-adequate, or iron-overloaded diets for 3 weeks to alter their iron status. Total RNA was isolated from the pancreases and pooled within each group for microarray analyses in which gene expression levels were compared to those in iron-adequate controls. In iron-deficient pancreas, a total of 66 genes were found to be differentially regulated (10 up, 56 down), whereas in iron-overloaded pancreas, 164 genes were affected (82 up, 82 down). The most up-regulated transcript in iron-deficient pancreas was arachidonate 15-lipoxygenase (Alox15), which has been implicated in the development of diabetes. In iron-overloaded pancreas, the most upregulated transcripts were Reg1a, Reg3a, and Reg3b belonging to the regenerating islet-derived gene (Reg) family. Reg expression has been observed in response to pancreatic stress and is thought to facilitate pancreatic regeneration. Subsequent qRT-PCR validation indicated that Alox15 mRNA levels were 4 times higher in iron-deficient than in iron-adequate pancreas and that Reg1a, Reg3a, and Reg3b mRNA levels were 17–36 times higher in iron-overloaded pancreas. The elevated Alox15 mRNA levels in iron-deficient pancreas were associated with 8-fold higher levels of Alox15 protein as indicated by Western blotting. Overall, these data raise the possibility that Reg expression may serve as a biomarker for iron-related pancreatic stress, and that iron deficiency may adversely affect the risk of developing diabetes through up-regulation of Alox15.
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Affiliation(s)
- Richard Coffey
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, United States of America
| | - Hyeyoung Nam
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, United States of America
| | - Mitchell D. Knutson
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, United States of America
- * E-mail:
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Han TK. Effects Ala54Thr polymorphism of FABP2 on obesity index and biochemical variable in response to a aerobic exercise training. J Exerc Nutrition Biochem 2013; 17:209-17. [PMID: 25566432 PMCID: PMC4241911 DOI: 10.5717/jenb.2013.17.4.209] [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: 10/30/2013] [Revised: 12/04/2013] [Accepted: 12/09/2013] [Indexed: 11/08/2022] Open
Abstract
The purpose of the current study was to investigate whether or not the FABP2 gene polymorphism modulated obesity indices, hemodynamic factor, blood lipid factor, and insulin resistance markers through 12-week aerobic exercise training in abdominal obesity group of Korean mid-life women. A total of 243 abdominally obese subjects of Korean mid-life women voluntarily participated in aerobic exercise training program for 12 weeks. Polymerase Chain Reaction with Restriction Fragment Length Polymorphism (PCR-RFLP) assay was used to assess the FABP2 genotype of the participants (117 of AA homozygotes, 100 of AT heterozygotes, 26 of TT homozygotes). Prior to the participation of the exercise training program, baseline obesity indices, hemodynamic factor, blood lipid factor, and insulin resistance markers were measured. All the measurements were replicated following the 12-week aerobic exercise training program, and then the following results were found. After 12-week aerobic exercise training program, wild type (Ala54Ala) and mutant type (Ala54Thr+Thr54Thr) significantly decreased weight (P > .001), BMI (P > .001), %bf (P > .001), waist circumference (P > .001), WHR (P > .001), muscle mass (wild type p < .022; mutant type P > .001), RHR (P > .001), viseceral adipose area (wild type p < .005; mutant type P > .001), subcutaneous area (P > .001), insulin (wild type p < .005; mutant type P > .001) and significantly increased VO2max (P > .001). And wild type significantly decresed NEFA (P > .05), glucose (P > .05), OGTT 120min glucose (P > .05) and significantly increased HDLC (p > .005). Mutant type significantly decreased SBP (P > .001), DBP (P > .01), TC (P > .01), LPL (P > .05), LDL (P > .001), HOMA index (P > .01). The result of the present study represents that regular aerobic exercise training may beneficially prevent obesity index, blood pressure, blood lipids and insulin resistance markers independent of FABP Ala54Thr wild type and mutant type.
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Affiliation(s)
- Tae Kyung Han
- School of Sport Science, Sungkyunkwan University, Seoul, Korea
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Hu X, Yuan P, Yan J, Feng F, Li X, Liu W, Yang Y. Gene Polymorphisms of ADIPOQ +45T>G, UCP2 -866G>A, and FABP2 Ala54Thr on the Risk of Colorectal Cancer: A Matched Case-Control Study. PLoS One 2013; 8:e67275. [PMID: 23826253 PMCID: PMC3695067 DOI: 10.1371/journal.pone.0067275] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Accepted: 05/15/2013] [Indexed: 12/14/2022] Open
Abstract
As insulin resistance (IR) is an established risk factor for colorectal cancer (CRC), we explored the association between each of the IR-related gene polymorphisms of adiponectin (ADIPOQ) rs2241766, uncoupling protein 2 (UCP2) rs659366, and fatty acid-binding protein (FABP2) rs1799883 and CRC risk. Genotyping of blood samples and collection of lifestyle and dietary habits were performed for 400 case-control pairs. Unconditional logistic regression (ULR) was applied to assess the effects of the three single nucleotide polymorphisms (SNP), environmental factors. Both ULR and generalized multifactor dimensionality reduction (GMDR) were used to test the gene-gene and gene-environment interactions on CRC risk. Subjects carrying the ADIPOQ rs2241766 TG+GG genotype had a higher CRC risk than those carrying the TT genotype (OR = 1.429, 95% CI 1.069–1.909). The additive and multiplicative interactions between ADIPOQ rs2241766 and FABP2 rs1799883 on CRC were found by ULR (RERI = 0.764, 95%CI 0.218∼1.311, AP = 0.514, 95%CI 0.165∼0.864, S = −1.745, 95%CI is unachievable, and Pmulti = 0.017, respectively). Furthermore, the high order gene-gene interaction of the three SNPs were found by GMDR (P = 0.0107). A significant dosage effect with an increasing number of risk genotypes was observed as the risk of CRC increased (Ptrend = 0.037). In GMDR, the gene-environment interaction among the three SNPs and red meat consumption on CRC risk was significant (P = 0.0107). Compared with subjects with low red meat consumption and null risk genotypes, those with high-red meat consumption and three risk genotypes had 3.439-fold CRC risk (95% CI 1.410–8.385). In conclusion, the results showed that the ADIPOQ rs2241766 TG+GG genotype increased CRC risk. Given the complexity of the carcinogen for CRC, ADIPOQ rs2241766, UCP2 rs659366, FABP2 rs1799883 and red meat consumption potentially worked together in affecting CRC risk.
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Affiliation(s)
- Xiaoqin Hu
- Department of Epidemiology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, China
| | - Ping Yuan
- Department of Epidemiology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, China
| | - Jin Yan
- Department of Intestinal Surgery, Sichuan Cancer Hospital, Chengdu, Sichuan, China
| | - Fei Feng
- Department of Epidemiology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, China
| | - Xiaoling Li
- Department of Epidemiology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, China
| | - Wenhui Liu
- Department of Epidemiology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, China
| | - Yanfang Yang
- Department of Epidemiology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, China
- * E-mail:
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Anuradha CV. Phytochemicals targeting genes relevant for type 2 diabetes. Can J Physiol Pharmacol 2013; 91:397-411. [PMID: 23745945 DOI: 10.1139/cjpp-2012-0350] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Nutrigenomic approaches based on ethnopharmacology and phytotherapy concepts have revealed that type 2 diabetes mellitus (T2DM) may be susceptible to dietary intervention. Interaction between bioactive food components and the genome may influence cell processes and modulate the onset and progression of the disease. T2DM, characterized by insulin resistance and beta cell dysfunction, is one of the leading causes of death and disability. Despite the great advances that have been made in the understanding and management of this complex, multifactorial disease, T2DM has become a worldwide epidemic in the 21st century. Population and family studies have revealed a strong genetic component of T2DM, and a number of candidate genes have been identified in humans. Variations in the gene sequences such as single nucleotide polymorphisms, explain the individual differences in traits like disease susceptibility and response to treatment. A clear understanding of how nutrients affect the expression of genes should facilitate the development of individualized intervention and, eventually, treatment strategies for T2DM. Review of the literature identified many phytochemicals/extracts from traditional medicinal plants that can target diabetogenic genes. This review focuses on the genetic aspects of T2DM, nutrient modification of genes relevant for diabetes, and future prospects of nutritional therapy of T2DM.
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Affiliation(s)
- Carani Venkatraman Anuradha
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar - 608 002, Tamil Nadu, India.
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Raza ST, Fatima J, Ahmed F, Abbas S, Zaidi ZH, Singh S, Mahdi F. Association of angiotensin-converting enzyme (ACE) and fatty acid binding protein 2 (FABP2) genes polymorphism with type 2 diabetes mellitus in Northern India. J Renin Angiotensin Aldosterone Syst 2013; 15:572-9. [PMID: 23468166 DOI: 10.1177/1470320313481082] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is growing in an epidemic manner across the world with an expected doubling of the incidence to millions of affected individuals in the last decades. At present, adequate data are not available regarding the ACE and FABP2 polymorphisms and their susceptibility with T2DM cases in the North Indian population. Thus we conceived the need for further study of ACE (I/D) and FABP2 (Ala54Thr) genes polymorphism and its susceptibility to T2DM in the North Indian population. MATERIALS AND METHODS In this study, a total of 300 subjects (including 190 T2DM cases and 110 controls) participated. ACE and FABP2 gene polymorphisms in the cases and controls were evaluated by polymerase chain reaction and restriction fragment length polymorphism. RESULTS The frequencies of ACE I/I, I/D and D/D genotypes in T2DM cases and controls were 28.73%, 55.17%, 16.09% and 13.63%, 57.95%, 28.40%, respectively. The frequencies of FABP2 Ala54Ala, Ala54Thr and Thr54Thr in T2DM cases were 18.39%, 66.66%, 14.94% and 22.72%, 61.36%, 15.90% in controls, respectively. ACE I/I genotype was significantly more frequent in cases as compared to controls (p = 0.003, χ(2) = 9.13). CONCLUSION It appears that the ACE I/I genotype frequency was significantly higher in the T2DM cases as compared to the controls.
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Affiliation(s)
- Syed Tasleem Raza
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, India
| | - Jalees Fatima
- Department of Medicine, Era's Lucknow Medical College and Hospital, India
| | - Faisal Ahmed
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, India
| | - Shania Abbas
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, India
| | | | - Seema Singh
- Department of Physiology, Faculty of Medical Sciences, Integral University Lucknow, India
| | - Farzana Mahdi
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, India
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Pérez-Sanz TM, de Luis DA. Fatty Acid Binding Proteins and Cardiovascular Risk. CURRENT CARDIOVASCULAR RISK REPORTS 2012. [DOI: 10.1007/s12170-012-0287-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Albala C, Santos JL, Cifuentes M, Villarroel AC, Lera L, Liberman C, Angel B, Pérez-Bravo F. IntestinalFABP2A54T Polymorphism: Association with Insulin Resistance and Obesity in Women. ACTA ACUST UNITED AC 2012; 12:340-5. [PMID: 14981227 DOI: 10.1038/oby.2004.42] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To assess the association between the Ala54Thr genetic polymorphism of the fatty acid-binding protein 2 (FABP2) gene with insulin resistance and obesity. RESEARCH METHODS AND PROCEDURES According to a sampling scheme based on BMI, 33 adult obese women (BMI > or = 30) and 30 adult normal-weight women (BMI > 18.5 and < 25 kg/m(2)) were recruited for this study. Women with chronic inflammatory diseases or acute pathology were excluded. Glucose, insulin, leptin, lipids, and tumor necrosis factor alpha (TNF alpha) were measured in fasting plasma samples. Insulin resistance was estimated through the homeostasis model assessment for insulin resistance method. The Ala54Thr allelic variant was determined by polymerase chain reaction, followed by restriction fragment-length polymorphism analysis. RESULTS The Thr54 allele was more frequent in obese than in nonobese women (47.0% vs. 31.7; p = 0.08). Among obese women, higher TNF alpha concentrations were found when comparing the Thr54/Thr54 genotype (30.0 +/- 7.1 pg/mL) with either the Ala54/Thr54 genotype (21.2 +/- 8.4 pg/mL) or the Ala54/Ala44 genotype (20.1 +/- 7.0 pg/mL) (p < 0.05). In addition, higher fasting plasma insulin and leptin levels were found among Thr54/Thr54 homozygotes compared with the other genotypes (p < 0.05). DISCUSSION Our results suggest that the Ala54Thr polymorphism of the FABP2 gene is associated with obesity and insulin resistance. The effect of this polymorphism might be mediated by elevated production of TNF alpha.
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Affiliation(s)
- Cecilia Albala
- Department of Public Nutrition, Genetic Epidemiology Unit, Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile.
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Turkovic LF, Pizent A, Dodig S, Pavlovic M, Pasalic D. FABP2 gene polymorphism and metabolic syndrome in elderly people of croatian descent. Biochem Med (Zagreb) 2012; 22:217-24. [PMID: 22838187 PMCID: PMC4062340 DOI: 10.11613/bm.2012.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Introduction: Metabolic syndrome (MetS) is a multifactorial disorder in which dyslipidemia plays an important role. Fatty acid-binding protein 2 (FABP 2) is responsible for transport of free fatty acids in the intestinal endothelium cells. FABP2-genetic variants might affect plasma lipid concentrations and intracellular lipid transport. The aim of this study was to investigate the association between FABP2 Ala54Thr genetic polymorphism and metabolic syndrome and some biochemical and anthropological parameters in elderly subjects. Materials and methods: This cross-sectional study included 140 men and 176 women older than 70 years. Fasting serum concentration of glucose, lipid parameters, total proteins and C-reactive protein were determined by standardized methods. Presence (MetS(+)) or absence (MetS(−)) of MetS was determined according to criteria of the International Diabetes Federation. FABP2 genetic polymorphism Ala54Thr (rs1799883) was genotyped with PCR-RFPL. Results: The genotype frequencies for Ala/Ala, Ala/Thr and Thr/Thr genotype were 60, 36 and 6 in MetS(−), and 131, 70 and 13 in MetS(+), respectively, without statistical significance (P = 0.567). Ala/Ala genotype was a subgroup of non-carriers, while Ala/Thr and Thr/Thr genotypes were Thr54-carriers. Median triglyceride concentration was significantly lower in carriers then in non-carriers for whole MetS(+) group (P = 0.050); there were no significant difference between men with MetS (P = 0.144), but there was a difference between women with MetS (P = 0.020). T-test showed that mean HDL cholesterol concentrations in MetS(+) group for Thr54-carriers was significantly higher in whole group (P = 0.001), and for both genders (men P = 0.039; women P = 0.004) as compared to non-carriers. Conclusions: FABP2 genetic polymorphism is associated with lower triglyceride and higher HDL-cholesterol concentrations in elderly subjects with MetS. This genetic variation might be a useful marker for understanding dyslipidemia in MetS.
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Affiliation(s)
- Lana Feher Turkovic
- Department of Chemistry, Biochemistry and Clinical Chemistry, University of Applied Health Studies-Zagreb, Zagreb, Croatia
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Abstract
More than 25 years have passed since Ancel Keys and others observed that high intake of monounsaturated fatty acids, especially as supplied by plants (eg, olive oil) was associated with lower cardiovascular and overall mortality. About 15 years later, advances in genotyping technologies began to facilitate widespread study of relationships between dietary fats and genetic variants, illuminating the role of genetic variation in modulating human responses to fatty acids. More recently, microarray technologies evaluate the ways in which minor, bioactive compounds in plant oils (including olive, thyme, lemongrass, clove, eucalyptus, and others) alter gene expression to mediate anti-inflammatory and antioxidant effects. Results from a range of diverse technologies and approaches are coalescing to improve understanding of the role of the genome in shaping our responses to plant oils, and to clarify the genetic mechanisms underlying the cardioprotective benefits we derive from a wide range of plant oil constituents.
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Smathers RL, Petersen DR. The human fatty acid-binding protein family: evolutionary divergences and functions. Hum Genomics 2011; 5:170-91. [PMID: 21504868 PMCID: PMC3500171 DOI: 10.1186/1479-7364-5-3-170] [Citation(s) in RCA: 315] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Fatty acid-binding proteins (FABPs) are members of the intracellular lipid-binding protein (iLBP) family and are involved in reversibly binding intracellular hydrophobic ligands and trafficking them throughout cellular compartments, including the peroxisomes, mitochondria, endoplasmic reticulum and nucleus. FABPs are small, structurally conserved cytosolic proteins consisting of a water-filled, interior-binding pocket surrounded by ten anti-parallel beta sheets, forming a beta barrel. At the superior surface, two alpha-helices cap the pocket and are thought to regulate binding. FABPs have broad specificity, including the ability to bind long-chain (C16-C20) fatty acids, eicosanoids, bile salts and peroxisome proliferators. FABPs demonstrate strong evolutionary conservation and are present in a spectrum of species including Drosophila melanogaster, Caenorhabditis elegans, mouse and human. The human genome consists of nine putatively functional protein-coding FABP genes. The most recently identified family member, FABP12, has been less studied.
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Affiliation(s)
- Rebecca L Smathers
- Molecular Toxicology and Environmental Health Sciences Program, Department of Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO 80045, USA
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Hung CC, Ho JL, Chang WL, Tai JJ, Hsieh TJ, Hsieh YW, Liou HH. Association of genetic variants in six candidate genes with valproic acid therapy optimization. Pharmacogenomics 2011; 12:1107-17. [PMID: 21806385 DOI: 10.2217/pgs.11.64] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Bu L, Salto LM, De Leon KJ, De Leon M. Polymorphisms in fatty acid binding protein 5 show association with type 2 diabetes. Diabetes Res Clin Pract 2011; 92:82-91. [PMID: 21288588 PMCID: PMC3078975 DOI: 10.1016/j.diabres.2011.01.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 12/29/2010] [Accepted: 01/10/2011] [Indexed: 12/18/2022]
Abstract
Genes for the fatty acid binding proteins (FABP) family encode small 14-15 kDa cytosolic proteins and can be regulated during type 2 diabetes mellitus (T2DM) and obesity. This study compared association of single nucleotide polymorphisms (SNPs) in FABP1-5 with T2DM in different ethnic groups. Associations with T2DM of SNPs in these proteins were assessed in African American (AA), non-Hispanic White (NHW), and Hispanic American (HA) individuals. A total of 650 DNA samples were genotyped; control samples were obtained from Coriell's North American Human Variation Panel Repository (NAHVP) of apparently healthy individuals and T2DM cases were taken from the American Diabetes Association GENNID Study. The rs454550 SNP of FABP5 showed a significant association with T2DM in NHW (OR: 9.03, 95% CI: 1.13-71.73, p=0.014). Our analysis also identified a new FABP5 SNP (nSNP) that showed a significant association with T2DM in NHW (OR: 0.44, 95% CI: 0.19-0.99, p=0.045) and AA (OR: 0.17, 95% CI: 0.03-0.80, p=0.016). The Ala54Thr FABP2 polymorphism was significantly associated with T2DM in HA individuals only (OR: 1.85, 95% CI: 1.05-3.27, p=0.032). All other FABP SNPs did not show association with T2DM. These findings suggest a potential distinct role(s) of SNPs in FABP5 and FABP2 genes in T2DM in different populations.
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Affiliation(s)
- Liming Bu
- Center for Health Disparities and Molecular Medicine and Department of Basic Sciences, Loma Linda University, School of Medicine, Loma Linda, CA 92350, United States.
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Pishva H, Mahboob SA, Mehdipour P, Eshraghian MR, Mohammadi-Asl J, Hosseini S, Karimi F. Fatty acid-binding protein-2 genotype influences lipid and lipoprotein response to eicosapentaenoic acid supplementation in hypertriglyceridemic subjects. Nutrition 2010; 26:1117-21. [PMID: 20080390 DOI: 10.1016/j.nut.2009.09.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2009] [Revised: 06/22/2009] [Accepted: 09/30/2009] [Indexed: 02/08/2023]
Abstract
OBJECTIVE The blood lipid-lowering effects of eicosapentaenoic acid (EPA) on hypertriglyceridemic subjects with different fatty acid-binding protein-2 (FABP2) genotypes have not, to our knowledge, been previously studied. METHODS Twenty-three FABP2 Ala54 and 23 Thr54 carriers with hypertriglyceridemia (triacylglycerol level >200mg/dL) were enrolled in this study. Participants took 2g of pure EPA daily for 8 wk. Fasting blood lipid and lipoprotein profiles were determined and changes from baseline were measured. RESULTS Blood lipids and lipoprotein responses of the FABP2 genotypes differed after EPA supplementation. Changes from baseline for triacylglycerol (19.2% decrease for Ala54 and 60.5% for Thr54, P<0.001), very low-density lipoprotein (20.0% decrease for Ala54 and 60.5% for Thr54, P<0.001), apolipoprotein CIII (22.8% decrease for Ala54 and 36.4% for Thr54, P<0.01), and high-density lipoprotein cholesterol (17.6% increase for Ala54 and 30.7% for Thr54, P<0.01) differed significantly between the two carrier groups. However, changes in total cholesterol, low-density lipoprotein cholesterol, and apolipoprotein B were not significant. EPA supplementation increased plasma EPA in Ala54 and Thr54 carriers. Although EPA supplementation increased the level of plasma EPA in both carrier groups, this effect was more pronounced in the Thr54 carriers. CONCLUSION Therefore, EPA consumption has more favorable effects on blood lipids of hypertriglyceridemics with Thr54 genotype rather than those with Ala54. The level of plasma EPA increases after EPA supplementation. Because the FABP2 Thr54 polymorphism appears to be prevalent in hypertriglyceridemic subjects, increasing EPA intake in these subjects could be an effective strategy for reducing blood triacylglycerol concentration.
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Affiliation(s)
- Hamideh Pishva
- Department of Nutrition and Biochemistry, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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Auinger A, Helwig U, Rubin D, Herrmann J, Jahreis G, Pfeuffer M, de Vrese M, Foelsch UR, Schreiber S, Doering F, Schrezenmeir J. Human intestinal fatty acid binding protein 2 expression is associated with fat intake and polymorphisms. J Nutr 2010; 140:1411-7. [PMID: 20534879 DOI: 10.3945/jn.109.118034] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The intestinal fatty acid binding protein (FABP2) is involved in lipid metabolism whereby variations in the promoter (haplotypes A/B) and exon 2 (Ala54Thr) are associated with dyslipidemia and insulin resistance. To elucidate which factors determine FABP2 expression in human mucosa, we investigated the association between fat intake, genotypes, biochemical variables, and FABP2 expression. FABP2 gene expression was assessed in duodenal specimens from 100 participants who answered a FFQ and who were genotyped and characterized for traits of metabolic syndrome and further biochemical data. Homozygotes for haplotype A tended to have lower fat intake than B-allele carriers (P = 0.066). Searching for an explanation, we evaluated the orexigenic glucose-dependent insulinotropic polypeptide (GIP) in a subset from the Metabolic Intervention Cohort Kiel. AA homozygotes had lower postprandial GIP concentrations than BB homozygotes. Duodenal FABP2 expression was correlated with (n-3) fatty acid (FA) intake in AA homozygotes (r = 0.49; P = 0.021). It was higher in AA homozygotes than in B-allele carriers after adjustment for (n-3) FA intake (P = 0.049) and was negatively correlated with serum FFA (r = -0.41; P < 0.01). Our data indicate that FABP2 expression depends on (n-3) FA intake and FABP2 genotypes. FABP2 might be involved in regulating food intake and intestinal FA utilization.
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Affiliation(s)
- Annegret Auinger
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Department of Physiology and Biochemistry of Nutrition, Kiel, Karlsruhe, Germany.
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Yoshioka K, Yoshida T, Kogure A, Takakura Y, Umekawa T, Toda H. Association study of fatty acid binding protein 2 gene polymorphism for diabetic nephropathy in Japanese patients with type 2 diabetes. Diabetes Metab Syndr 2010. [DOI: 10.1016/j.dsx.2010.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chamberlain AM, Schreiner PJ, Fornage M, Loria CM, Siscovick D, Boerwinkle E. Ala54Thr polymorphism of the fatty acid binding protein 2 gene and saturated fat intake in relation to lipid levels and insulin resistance: the Coronary Artery Risk Development in Young Adults (CARDIA) study. Metabolism 2009; 58:1222-8. [PMID: 19439328 PMCID: PMC2728792 DOI: 10.1016/j.metabol.2009.04.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Revised: 03/26/2009] [Accepted: 04/14/2009] [Indexed: 11/29/2022]
Abstract
The Thr54 allele of the intestinal fatty acid-binding protein Ala54Thr functional polymorphism (FABP2) is associated with increased fat oxidation and insulin resistance. We determined the cross-sectional associations of the FABP2 gene with lipid levels and insulin resistance in 2148 participants who completed the year-20 examination of the Coronary Artery Risk Development in Young Adults (CARDIA) study. No significant difference in total cholesterol, low-density or high-density lipoprotein cholesterol, triglycerides, high-density lipoprotein cholesterol to total cholesterol ratio, or homeostasis model assessment of insulin resistance (HOMA-IR) was found between FABP2 genotypes. However, in the presence of a high-saturated fat diet (>/=53.2 g/d, the 90th percentile for the population), the AA/AG genotypes (carriers of the Thr54 allele) of FABP2 had statistically significantly higher levels of log(HOMA-IR) (P = .006) and a lower high-density lipoprotein cholesterol to total cholesterol ratio (P = .03), and borderline statistically significantly higher levels of total cholesterol, low-density lipoprotein cholesterol, and log(triglycerides) (P values = .08, .07, and .05, respectively) compared with those with the GG genotype (Ala54 homozygotes). Lipid levels and log(HOMA-IR) did not vary by genotype with saturated fat intake less than 53.2 g/d. Limiting dietary saturated fat intake may be particularly important among carriers of the A allele of FABP2.
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Affiliation(s)
- Alanna M Chamberlain
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN 55454, USA
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Kobayashi M, Hada N, Hoshino H, Ozawa T, Umeshita K, Nishimura M, Murai A, Ohno T, Horio F. Confirmation of diabetes-related quantitative trait loci derived from SM/J and A/J mice by using congenic strains fed a high-carbohydrate or high-fat diet. J Nutr Sci Vitaminol (Tokyo) 2009; 55:257-63. [PMID: 19602834 DOI: 10.3177/jnsv.55.257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The interaction between causative genes and diet is known to influence the onset of obesity and diabetes in humans, although it has remained difficult to identify diabetogenic gene(s) because humans are genetically and environmentally heterogeneous. Mouse SMXA recombinant inbred (RI) strains are established from parental inbred strains (SM/J and A/J) and have been shown to be beneficial tools for analyzing polygenic traits. We previously mapped a significant quantitative trait locus (QTL, T2dm1sa) on Chromosome (Chr.) 10 and suggestive QTLs on Chr. 2, 6, and 18 for diabetes-related traits by using SMXA RI strains fed a high-carbohydrate diet. As a first step in identifying the responsible gene among QTLs for glucose tolerance mapped on Chr. 10 and 18, we established new strains of A.SM-T2dm1sa and SM.A-D18Mit19-D18Mit7 congenic mice. Each congenic strain bears the diabetogenic allele of an introgressed chromosomal region on a genetic background strain carrying the non-diabetogenic allele. The diabetogenic effect of T2dm1sa mapped on Chr. 10 was not supported by studies of A.SM-T2dm1sa congenic mice when the mice were fed a high-carbohydrate or high-fat diet. SM.A-D18Mit19-D18Mit7 congenic mice showed impaired glucose tolerance not only when they were fed a high-carbohydrate diet, but also when they were fed a high-fat diet. Thus, it appears that gene(s) affecting diabetes-related traits under either dietary condition may be present on Chr. 18.
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Affiliation(s)
- Misato Kobayashi
- Department of Applied Molecular Bioscience, Graduate School of Bioagricultural Sciences, Nagoya University, Japan
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Böhme M, Grallert H, Klapper M, Gieger C, Fischer A, Heid I, Wichmann HE, Döring F, Illig T. Association between functional FABP2 promoter haplotypes and body mass index: Analyses of 8072 participants of the KORA cohort study. Mol Nutr Food Res 2009; 53:681-5. [DOI: 10.1002/mnfr.200800225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Kishida K, Aoyama M, Masaki M, Shidoji Y. The Ala54Thr polymorphism in the fatty acid-binding protein 2 gene leads to higher food intake in Japanese women. Mol Psychiatry 2009; 14:466-7. [PMID: 19384318 DOI: 10.1038/mp.2008.140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Tavridou A, Arvanitidis KI, Tiptiri-Kourpeti A, Petridis I, Ragia G, Kyroglou S, Christakidis D, Manolopoulos VG. Thr54 allele of fatty-acid binding protein 2 gene is associated with obesity but not type 2 diabetes mellitus in a Caucasian population. Diabetes Res Clin Pract 2009; 84:132-7. [PMID: 19324445 DOI: 10.1016/j.diabres.2009.02.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Revised: 01/29/2009] [Accepted: 02/18/2009] [Indexed: 01/22/2023]
Abstract
AIM The fatty acid-binding protein 2 (FABP2) A54T polymorphism has been associated with type 2 diabetes mellitus (T2DM) and obesity in many but not all studies. Our aim was to investigate possible associations of FABP2 A54T polymorphism with T2DM and/or obesity in a Greek Caucasian population. METHODS 242 subjects with T2DM and 188 control subjects were genotyped for the FABP2 A54T polymorphism using PCR-RFLP method. Of the total subjects included in both groups, 172 were classified as obese (BMI >or= 30 kg/m(2)) and 258 were classified as nonobese (BMI <30 kg/m(2)). RESULTS In the whole population, 218 subjects (50.7%) were genotyped as AA, 175 subjects (40.7%) as AT, and 37 subjects (8.6%) as TT for the FABP2 A54T polymorphism. According to the dominant model, the frequency of AA genotype was significantly lower in obese than in nonobese subjects (43.0% vs 55.8%, p=0.009). No significant difference was observed in genotypes between diabetic and nondiabetic subjects. According to the additive model, the presence of TT genotype was significantly associated with obesity after adjusting for age, sex, and the presence of T2DM (OR 2.32, p=0.028). CONCLUSION FABP2 A54T polymorphism may help identify Caucasian subjects at risk for obesity.
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Affiliation(s)
- A Tavridou
- Laboratory of Pharmacology, Medical School, Democritus University of Thrace, Dragana Campus, 68100 Alexandroupolis, Greece.
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Pishva H, Mahboob SA, Mehdipour P, Eshraghian MR, Mohammadi-Asl J, Hosseini S, Rahmany M. Association between the FABP2 Ala54Thr, PPARα Leu162/Val, and PPARα intron7 polymorphisms and blood lipids ApoB and ApoCIII in hypertriglyceridemic subjects in Tehran. J Clin Lipidol 2009; 3:187-94. [PMID: 21291813 DOI: 10.1016/j.jacl.2009.04.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2008] [Revised: 04/07/2009] [Accepted: 04/13/2009] [Indexed: 02/08/2023]
Abstract
BACKGROUND The alanine to threonine substitution at codon 54 in the FABP2 gene and PPARα Val162 allele have been associated with hypertriglyceridemia. OBJECTIVE We sought to determine the prevalence of the Ala54Thr polymorphism of fatty acid binding protein (FABP) 2 gene and the Leu162/Val in exon 5 and G/C in intron7 polymorphism of peroxisome proliferator-activated receptor alpha (PPARα) gene in hypertriglyceridemic patients and their associations with blood lipid concentrations. METHODS A total of 170 hypertriglyceridemic subjects were enrolled and genotyped for Ala54Thr, Leu162Val, and intron 7 polymorphism by the use of a polymerase chain reaction-restriction fragment length polymorphism method. Fasting blood triglyceride, total cholesterol (TC), low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, apolipoprotein (Apo)B, and ApoCIII also were determined. RESULTS We found frequency of 81.2% for the Thr54 polymorphism among hypertriglyceridemic subjects. Positive associations were observed between this polymorphism and greater blood triglyceride, very low-density lipoprotein, and ApoCIII levels and lower blood high-density lipoprotein cholesterol concentration both in men and women. However, no association was found between the Thr54 polymorphism and TC, low-density lipoprotein cholesterol, ApoB, and body mass index. Frequency of the Leu162Val polymorphism was 21.8%. The Leu162Val polymorphism was not associated with lipid and lipoprotein concentrations in hypertriglyceridemic subjects (both in men and women). The frequency of intron7 polymorphism was 55.3% in subjects studied and, except for body mass index and TC, no association was found between the intron7 allele and blood lipids ApoB, and ApoCIII. CONCLUSION Frequency of the Thr54 polymorphism is high in hypertriglyceridemic subjects, and the presence of this allele may increase some blood lipid and lipoprotein concentrations. In addition, the frequency of intron7 polymorphism may be greater than Leu162Val in hypertriglyceridemic patients.
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Affiliation(s)
- Hamideh Pishva
- Department of Nutrition and Biochemistry, School of Public Health and Institute of Public Research, Tehran University of Medical Sciences, Tehran, Iran
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Biomarkers in nutritional epidemiology: applications, needs and new horizons. Hum Genet 2009; 125:507-25. [DOI: 10.1007/s00439-009-0662-5] [Citation(s) in RCA: 323] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2009] [Accepted: 03/27/2009] [Indexed: 01/13/2023]
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Ferguson LR. Dissecting the Nutrigenomics, Diabetes, and Gastrointestinal Disease Interface: From Risk Assessment to Health Intervention. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2008; 12:237-44. [DOI: 10.1089/omi.2008.0044] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Klapper M, Böhme M, Nitz I, Döring F. Transcriptional regulation of the fatty acid binding protein 2 (FABP2) gene by the hepatic nuclear factor 1 alpha (HNF-1alpha). Gene 2008; 416:48-52. [PMID: 18440731 DOI: 10.1016/j.gene.2008.02.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2007] [Revised: 02/17/2008] [Accepted: 02/29/2008] [Indexed: 12/29/2022]
Abstract
The human fatty acid binding protein (FABP2) is involved in intestinal absorption and intracellular trafficking of long-chain fatty acids. Here we investigate transcriptional regulation of FABP2 by the endodermal hepatic nuclear factor 1 alpha (HNF-1alpha). In electromobility shift and supershift assays we show the presence of two adjacent HNF-1alpha binding sites within the FABP2 promoter regions -185 to -165 and -169 to -149. HNF-1alpha activates an FABP2 promoter luciferase construct by 3.5 and 20-fold in Caco-2 and Hela cells, respectively. Mutational analysis of HNF-1alpha elements resulted in about 50% reduction of basal and HNF-1alpha induced activity of FABP2 promoter constructs, predominantly caused by deletion of the -185 to -165 site. Thus, our data suggest a major role of HNF-1alpha in control of FABP2 expression in intestine via a functional HNF-1alpha recognition element within FABP2 promoter region -185 to -165.
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Affiliation(s)
- Maja Klapper
- Molecular Nutrition, Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Heinrich-Hecht-Platz 10, D-24118 Kiel, Germany.
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Abstract
Diabetes mellitus is one of the most common endocrine disorders. It affects almost 6% of the world's population, and its prevalence continues to increase. The causes of diabetes mellitus are multifactorial, and in the general population both genetic and environmental factors contribute evenly to its development. Several genes have been consistently associated with type 2 diabetes mellitus; however, it is not clear how many of those translate into increased cardiovascular disease risk. Recent evidence suggests that genetic variation at the CALPN10, FABP4, GK, GST, PPARA, and PPARG loci may confer higher cardiovascular disease risk in patients with type 2 diabetes mellitus. However, the evidence is scattered and inconclusive and its translation into practical clinical testing will require studies properly designed to examine not only simple genetic associations but also gene-gene and gene-environment interactions.
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46
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Agellon LB, Drozdowski L, Li L, Iordache C, Luong L, Clandinin MT, Uwiera RRE, Toth MJ, Thomson ABR. Loss of intestinal fatty acid binding protein increases the susceptibility of male mice to high fat diet-induced fatty liver. Biochim Biophys Acta Mol Cell Biol Lipids 2007; 1771:1283-8. [PMID: 17905650 DOI: 10.1016/j.bbalip.2007.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Revised: 08/07/2007] [Accepted: 08/08/2007] [Indexed: 01/20/2023]
Abstract
Mice lacking I-FABP (encoded by the Fabp2 gene) exhibit a gender dimorphic response to a high fat/cholesterol diet challenge characterized by hepatomegaly in male I-FABP-deficient mice. In this study, we determined if this gender-specific modification of liver mass in mice lacking I-FABP is attributable to the high fat content of the diet alone and whether hepatic Fabp1 gene (encodes L-FABP) expression contributes to this difference. Wild-type and Fabp2-/- mice of both genders were fed a diet enriched with either polyunsaturated or saturated fatty acids (PUFA or SFA, respectively) in the absence of cholesterol. Male Fabp2-/- mice, but not female Fabp2-/- mice, exhibited increased liver mass and hepatic triacylglycerol (TG) deposition as compared to corresponding wild-type mice. In wild-type mice that were fed the standard chow diet, there was no difference in the concentration of hepatic L-FABP protein between males and females although the loss of I-FABP did cause a slight reduction of hepatic L-FABP abundance in both genders. The hepatic L-FABP mRNA abundance in both male and female wild-type and Fabp2-/- mice was higher in the PUFA-fed group than in the SFA-fed group, and was correlated with L-FABP protein abundance. No correlation between hepatic L-FABP protein abundance and hepatic TG concentration was found. The results obtained demonstrate that loss of I-FABP renders male mice sensitive to high fat diet-induced fatty liver, and this effect is independent of hepatic L-FABP.
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Affiliation(s)
- Luis B Agellon
- Canadian Institutes of Health Research Molecular and Cell Biology of Lipids Research Group and Department of Biochemistry, University of Alberta, Edmonton, AB, Canada T6G 2S2.
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Georgopoulos A, Bloomfield H, Collins D, Brousseau ME, Ordovas JM, O'Connor JJ, Robins SJ, Schaefer EJ. Codon 54 polymorphism of the fatty acid binding protein (FABP) 2 gene is associated with increased cardiovascular risk in the dyslipidemic diabetic participants of the veterans affairs HDL intervention trial (VA-HIT). Atherosclerosis 2007; 194:169-74. [PMID: 16945373 DOI: 10.1016/j.atherosclerosis.2006.07.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2006] [Revised: 07/14/2006] [Accepted: 07/20/2006] [Indexed: 11/19/2022]
Abstract
The threonine (Thr) for alanine (Ala) codon 54 polymorphism of the fatty acid binding protein (FABP) 2 gene, when compared to the wild type, is associated with dyslipidemia. Since dyslipidemia is common in diabetes and is associated with increased cardiovascular risk, we tested the hypothesis that Thr-54 is associated with increased cardiovascular risk in patients with diabetes. The secondary prevention veterans affairs HDL intervention trial (VA-HIT) was carried out in patients with dyslipidemia. The DNA of trial participants (n=776) was screened for the Thr-54 polymorphism and cardiovascular endpoints were monitored. The polymorphism was detected in 370 (47.7%). For first occurrence of the primary endpoint [myocardial infarction (MI) or coronary heart disease (CHD) death] the hazard ratio (HR) and confidence intervals (Cox proportional hazards model) was 2.5 (1.2, 5.3) p=.02 in diabetic carriers of Thr-54 versus carriers without diabetes or fasting glucose >7 mmol/L. For the expanded endpoint (stroke, MI or CHD death), the corresponding HR was 3.0 (1.4, 5.4) p=.0003 and for the stroke alone the corresponding HR was 3.5 (1.4-8.9) p=.01. The higher cumulative incidence of the expanded endpoint in diabetic participants carrying the FABP2 polymorphism versus non-diabetic carriers was consistently present throughout the 5 years of the study (p=.0002). We conclude that based on the VA-HIT data, the Thr-54 polymorphism of the FABP2 gene is associated with a 2-3.5-fold increase in cardiovascular risk in dyslipidemic men with diabetes compared to their non-diabetic counterparts.
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Albala C, Villarroel A, Santos JL, Angel B, Lera L, Liberman C, Sanchez H, Pérez-Bravo F. FABP2 Ala54Thr polymorphism and diabetes in Chilean elders. Diabetes Res Clin Pract 2007; 77:245-50. [PMID: 17292994 DOI: 10.1016/j.diabres.2006.12.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2006] [Accepted: 12/14/2006] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The FABP2 Ala54Thr polymorphism has been associated with insulin resistance and diabetes in several populations. The aim of this study was to estimate the prevalence of FABP2 genotypes in 223 Chilean subjects (136 women and 87 men aged 65-79 years) and its association with type 2 diabetes in a 4 years follow-up. METHODS Glucose, Insulin and lipids were measured in fasting plasma samples. Insulin resistance was estimated through the homeostasis model assessment. Diabetes was diagnosed according ADA criteria. The Ala54Thr allelic variant was determined by polymerase chain reaction and restriction fragment-length polymorphism analysis. Logistic regression techniques were used to assess gene-disease associations. RESULTS Genotype frequencies were estimated as 30.5, 49.3 and 20.2% for the Ala/Ala, Ala/Thr and Thr/Thr, respectively. The crude OR for the association between Thr54 carriers and diabetes was estimated as 2.18 (1.12-4.24). The corresponding OR for the association between Thr54 carriers with Metabolic Syndrome was 1.06 (0.59-1.88). After adjustment by BMI and age, a significant association persists for Thr54Thr carriers and diabetes (OR 2.70; 95% CI 1.113-6.527). The 4-year cumulative incidence of diabetes was higher in Thr carriers than in non-carriers (20.1% versus 8.5%; p<0.04). The adjusted association between Thr54Thr polymorphism and diabetes incidence was OR 3.84 (95% CI: 1.140-12.910) CONCLUSION Our results strongly suggest an association between the Ala54Thr polymorphism of FABP2 with diabetes, revealing a genetic dosage effect regarding its association with diabetes in Chilean elders.
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Affiliation(s)
- Cecilia Albala
- Public Health Nutrition Unit, Chronic Diseases & Genetic Epidemiology Research Laboratory, Institute of Nutrition and Food Technology (INTA) University of Chile, Casilla, Santiago, P.O. Box 138-1, El Libiano 5524, Chile.
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Binas B, Erol E. FABPs as determinants of myocellular and hepatic fuel metabolism. Mol Cell Biochem 2007; 299:75-84. [PMID: 17001451 DOI: 10.1007/s11010-005-9043-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In vitro experiments and expression patterns have long suggested important roles for the genetically related cytosolic fatty acid binding proteins (FABPs) in lipid metabolism. However, evidence for such roles in vivo has become available only recently from genetic manipulation of FABP expression in mice. Here, we summarize the fuel-metabolic phenotypes of mice lacking the genes encoding heart-type FABP (H-/- mice) or liver-type FABP (L-/- mice). Cytosolic extracts from H-/- heart and skeletal muscle and from L-/- liver showed massively reduced binding of long chain fatty acids (LCFA) and, in case of L-/- liver, also of LCFA-CoA. Uptake, oxidation, and esterification LCFA, when measured in vivo and/or ex vivo, were markedly reduced in H-/- heart and muscle and in L-/- liver. The reduced LCFA oxidation in H-/- heart and L-/- liver was not due to reduced activity of PPARa, a fatty acid-sensitive transcription factor that determines the lipid-oxidative capacity in these organs. In H-/- mice, mechanisms of compensation were partially studied and included a redistribution of muscle mitochondria as well as increases of cardiac and skeletal muscle glucose uptakes and of hepatic ketogenesis. In skeletal muscle, the altered glucose uptake included decreased basal but increased insulin-dependent components. Metabolic compensation was only partial, however, since the H-/- mice showed decreased exercise tolerance. In conclusion, the recent studies established H- and L-FABP as major determinants of regional LCFA utilization; therefore the H-/- and L-/- mice are attractive models for studying principles of fuel selection and metabolic homeostasis.
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Affiliation(s)
- B Binas
- Department of Pathobiology, College of Vet. Medicine, Texas A&M University, College Station, TX 77843, USA.
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Gomez LC, Real SM, Ojeda MS, Gimenez S, Mayorga LS, Roqué M. Polymorphism of the FABP2 gene: a population frequency analysis and an association study with cardiovascular risk markers in Argentina. BMC MEDICAL GENETICS 2007; 8:39. [PMID: 17594477 PMCID: PMC1925061 DOI: 10.1186/1471-2350-8-39] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2007] [Accepted: 06/26/2007] [Indexed: 11/10/2022]
Abstract
BACKGROUND The FABP2 gene encodes for the intestinal FABP (IFABP) protein, which is expressed only in intestinal enterocytes. A polymorphism at codon 54 in exon 2 of the FABP2 gene exchanges an Alanine (Ala), in the small helical region of the protein, for Threonine (Thr). Given the potential physiological role of the Ala54Thr FABP2 polymorphism, we assess in this study the local population frequency and analyze possible associations with five selected markers, i.e. glycemia, total cholesterol, body mass index (BMI), hypertension, and high Cardiovascular Risk Index (CVR index). METHODS We studied 86 men and 116 women. DNA was extracted from a blood drop for genotype analysis. Allele frequencies were calculated by direct counting. Hardy Weinberg Equilibrium was evaluated using a Chi-square goodness of fit test. For the polymorphism association analysis, five markers were selected, i.e. blood pressure, Framingham Risk Index, total cholesterol, BMI, and glycemia. For each marker, the Odds Ratio (OR) was calculated by an online statistic tool. RESULTS Our results reveal a similar population polymorphism frequency as in previous European studies, with q = 0.277 (95% confidence limits 0.234-0.323). No significant association was found with any of the tested markers in the context of our Argentine nutritional and cultural habits. We did, however, observe a tendency for increased Cholesterol and high BMI in Thr54 carriers. CONCLUSION This is the first study to look at the population frequency of the Thr54 allele in Argentina. The obtained result does not differ from previously reported frequencies in European populations. Moreover, we found no association between the Thr54 allele and any of the five selected markers. The observed tendency to increased total cholesterol and elevated BMI in Thr54 carriers, even though not significant for p < 0.1 could be worth of further investigation to establish whether the Thr54 variant should be taken into consideration in cardiovascular prevention strategies.
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Affiliation(s)
- Laura C Gomez
- Laboratory of Cellular and Molecular Biology, Faculty of Medical Sciences, National University of Cuyo, Mendoza CP:5500, Argentina
| | - Sebastián M Real
- Laboratory of Cellular and Molecular Biology, Faculty of Medical Sciences, National University of Cuyo, Mendoza CP:5500, Argentina
| | - Marta S Ojeda
- Faculty of Chemistry, Biochemistry and Pharmacy, National University of San Luis, San Luis, Argentina
| | | | - Luis S Mayorga
- Laboratory of Cellular and Molecular Biology, Faculty of Medical Sciences, National University of Cuyo, Mendoza CP:5500, Argentina
| | - María Roqué
- Laboratory of Cellular and Molecular Biology, Faculty of Medical Sciences, National University of Cuyo, Mendoza CP:5500, Argentina
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