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O'Connor S, Julien P, Weisnagel SJ, Gagnon C, Rudkowska I. Impact of a High Intake of Dairy Product on Insulin Sensitivity in Hyperinsulinemic Adults: A Crossover Randomized Controlled Trial. Curr Dev Nutr 2019; 3:nzz083. [PMID: 31453424 PMCID: PMC6700456 DOI: 10.1093/cdn/nzz083] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/20/2019] [Accepted: 07/12/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Dairy product intake has been associated with decreased risk of type 2 diabetes (T2D) in cohort studies. However, results from clinical trials on T2D-related risk factors remain inconclusive. OBJECTIVE The aim of this clinical trial was to evaluate the impact of high dairy product intake (HD) (≥4 servings/d) for 6 wk, compared with an adequate dairy product intake (AD) (≤2 servings/d), on glycemic and insulinemic parameters, insulin sensitivity, insulin secretion, and β-cell function in hyperinsulinemic adults. METHODS In this crossover clinical trial, hyperinsulinemic adults were randomly assigned to HD or AD for 6 wk, then crossed over after a 6-wk washout period. Serum glucose, insulin, C-peptide, HOMA-IR, Matsuda index, insulinogenic index, and disposition index were measured and analyzed using a repeated-measures mixed model adjusted for age, sex, and BMI. Anthropometric measures were collected and food intake was evaluated using a validated FFQ. RESULTS Nineteen men and 8 women completed the study (mean ± SD age: 55 ± 14 y; BMI: 31.3 ± 3.3 kg/m2. Dairy product intake was 5.8 servings/d in the HD condition and 2.3 servings/d in the AD condition after 6 wk. No difference was observed between HD and AD after 6 wk for all outcomes. CONCLUSIONS HD does not affect glycemic and insulinemic parameters, insulin sensitivity, insulin secretion, and β-cell function over AD in hyperinsulinemic adults. Additional larger and longer studies assessing T2D-related risk factors are required. This trial was registered at clinicaltrials.gov as NCT02961179.
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Affiliation(s)
- Sarah O'Connor
- Endocrinology and Nephrology Unit, Centre hospitalier universitaire de Québec—Laval University Research Center, Québec, Quebec, Canada
- Department of Kinesiology, Laval University, Québec, Quebec, Canada
| | - Pierre Julien
- Endocrinology and Nephrology Unit, Centre hospitalier universitaire de Québec—Laval University Research Center, Québec, Quebec, Canada
- Department of Medicine, Laval University, Québec, Quebec, Canada
| | - Stanley John Weisnagel
- Endocrinology and Nephrology Unit, Centre hospitalier universitaire de Québec—Laval University Research Center, Québec, Quebec, Canada
- Department of Medicine, Laval University, Québec, Quebec, Canada
| | - Claudia Gagnon
- Endocrinology and Nephrology Unit, Centre hospitalier universitaire de Québec—Laval University Research Center, Québec, Quebec, Canada
- Department of Medicine, Laval University, Québec, Quebec, Canada
| | - Iwona Rudkowska
- Endocrinology and Nephrology Unit, Centre hospitalier universitaire de Québec—Laval University Research Center, Québec, Quebec, Canada
- Department of Kinesiology, Laval University, Québec, Quebec, Canada
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do Nascimento GA, Leite N, Furtado-Alle L, Teixeira MD, de Souza RLR, Milano GE, da Silva LR, Pizzi J, Lopes WA, Lopes MDFA, Titski ACK, Tureck LV. FTO rs9939609 Does Not Interact with Physical Exercise but Influences Basal Insulin Metabolism in Brazilian Overweight and Obese Adolescents. J Obes 2018; 2018:3134026. [PMID: 29854435 PMCID: PMC5944237 DOI: 10.1155/2018/3134026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 03/23/2018] [Accepted: 04/08/2018] [Indexed: 01/12/2023] Open
Abstract
PURPOSE The rs9939609 SNP (T > A) in FTO gene is associated with obesity and type 2 diabetes. The present study aimed at verifying whether this SNP influenced biochemical outcomes of children and adolescents who are overweight/obese submitted to a program of physical exercise and also if there was influence on basal levels of these biochemical variables. METHODS The sample was composed by 432 children and adolescents grouped in three ways (obese, overweight, and normal weight); of these, 135 children and adoloescents who are obese and overweight were submitted to a physical exercise program for 12 weeks. All were genotyped by TaqMan SNP genotyping assay. RESULTS The children and adolescents who are overweight/obese and carriers of AA genotype had higher levels of insulin (p=0.03) and HOMA (p=0.007) and lower levels of glucose (p=0.003), but the SNP did not modulate the response to physical exercise. CONCLUSIONS In our study, the rs9939609 AA genotype was associated with parameters related to insulin metabolism but did not interact with physical exercise.
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Affiliation(s)
- Gabrielle Araujo do Nascimento
- Department of Genetics, Centro Politécnico, Setor de Ciências Biológicas, Federal University of Paraná, Francisco H. dos Santos, 210 Jardim das Américas, 81531-970 Curitiba, PR, Brazil
| | - Neiva Leite
- Department of Physical Education, Federal University of Paraná, Coração de Maria, 92 Jardim Botânico, 80215-370 Curitiba, PR, Brazil
| | - Lupe Furtado-Alle
- Department of Genetics, Centro Politécnico, Setor de Ciências Biológicas, Federal University of Paraná, Francisco H. dos Santos, 210 Jardim das Américas, 81531-970 Curitiba, PR, Brazil
| | - Mayza Dalcin Teixeira
- Department of Genetics, Centro Politécnico, Setor de Ciências Biológicas, Federal University of Paraná, Francisco H. dos Santos, 210 Jardim das Américas, 81531-970 Curitiba, PR, Brazil
| | - Ricardo Lehtonen Rodrigues de Souza
- Department of Genetics, Centro Politécnico, Setor de Ciências Biológicas, Federal University of Paraná, Francisco H. dos Santos, 210 Jardim das Américas, 81531-970 Curitiba, PR, Brazil
| | - Gerusa Eisfeld Milano
- Department of Physical Education, Federal University of Paraná, Coração de Maria, 92 Jardim Botânico, 80215-370 Curitiba, PR, Brazil
| | - Larissa Rosa da Silva
- Department of Physical Education, Federal University of Paraná, Coração de Maria, 92 Jardim Botânico, 80215-370 Curitiba, PR, Brazil
| | - Juliana Pizzi
- Department of Physical Education, Federal University of Paraná, Coração de Maria, 92 Jardim Botânico, 80215-370 Curitiba, PR, Brazil
| | - Wendell Arthur Lopes
- Department of Physical Education, State University of Maringa, Av. Colombo 5790, 87020-900 Maringa, PR, Brazil
| | - Maria de Fátima Aguiar Lopes
- Department of Physical Education, Federal University of Paraná, Coração de Maria, 92 Jardim Botânico, 80215-370 Curitiba, PR, Brazil
| | - Ana Cláudia Kapp Titski
- Department of Physical Education, Federal University of Paraná, Coração de Maria, 92 Jardim Botânico, 80215-370 Curitiba, PR, Brazil
| | - Luciane Viater Tureck
- Department of Genetics, Centro Politécnico, Setor de Ciências Biológicas, Federal University of Paraná, Francisco H. dos Santos, 210 Jardim das Américas, 81531-970 Curitiba, PR, Brazil
- Academic Department of Education, Federal University of Technology–Paraná, Av. Monteiro Lobato Km 04, 84016-210 Ponta Grossa, PR, Brazil
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Yang Q, Xiao T, Guo J, Su Z. Complex Relationship between Obesity and the Fat Mass and Obesity Locus. Int J Biol Sci 2017; 13:615-629. [PMID: 28539834 PMCID: PMC5441178 DOI: 10.7150/ijbs.17051] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 03/24/2017] [Indexed: 12/15/2022] Open
Abstract
In the 21st century, obesity has become a serious problem because of increasing obese patients and numerous metabolic complications. The primary reasons for this situation are environmental and genetic factors. In 2007, FTO (fat mass and obesity associated) was the first gene identified through a genome-wide association study (GWAS) associated with obesity in humans. Subsequently, a cluster of single nucleotide polymorphisms (SNPs) in the first intron of the FTO gene was discovered to be associated with BMI and body composition. Various studies have explored the mechanistic basis behind this association. Thus, emerging evidence showed that FTO plays a key role regulating adipose tissue development and functions in body size and composition. Recent prevalent research topic concentrated in the three neighboring genes of FTO: RPGRIP1L, IRX3 and IRX5, as having a functional link between obesity-associated common variants within FTO and the observed human phenotypes. The purpose of this review is to present a comprehensive picture of the impact of FTO on obesity susceptibility and to illuminate these new studies of FTO function in adipose tissue.
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Affiliation(s)
- Qingyun Yang
- Key Research Center of Liver Regulation for Hyperlipidemia SATCM/Class III Laboratory of Metabolism SATCM, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Tiancun Xiao
- Inorganic Chemistry Laboratory, Oxford University, South Parks Road, OX1 3QR, United Kingdom.,Guangzhou Boxabio Technology Ltd, Guangzhou Science City, P R China
| | - Jiao Guo
- Key Research Center of Liver Regulation for Hyperlipidemia SATCM/Class III Laboratory of Metabolism SATCM, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Zhengquan Su
- Key Research Center of Liver Regulation for Hyperlipidemia SATCM/Class III Laboratory of Metabolism SATCM, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, 510006, China
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