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Hostrup M, Onslev J. The beta 2 -adrenergic receptor - a re-emerging target to combat obesity and induce leanness? J Physiol 2021; 600:1209-1227. [PMID: 34676534 DOI: 10.1113/jp281819] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 10/12/2021] [Indexed: 12/25/2022] Open
Abstract
Treatment of obesity with repurposed or novel drugs is an expanding research field. One approach is to target beta2 -adrenergic receptors because they regulate the metabolism and phenotype of adipose and skeletal muscle tissue. Several observations support a role for the beta2 -adrenergic receptor in obesity. Specific human beta2 -adrenergic receptor polymorphisms are associated with body composition and obesity, for which the Gln27Glu polymorphism is associated with obesity, while the Arg16Gly polymorphism is associated with lean mass in men and the development of obesity in specific populations. Individuals with obesity also have lower abundance of beta2 -adrenergic receptors in adipose tissue and are less sensitive to catecholamines. In addition, studies in livestock and rodents demonstrate that selective beta2 -agonists induce a so-called 'repartitioning effect' characterized by muscle accretion and reduced fat deposition. In humans, beta2 -agonists dose-dependently increase resting metabolic rate by 10-50%. And like that observed in other mammals, only a few weeks of treatment with beta2 -agonists increases muscle mass and reduces fat mass in young healthy individuals. Beta2 -agonists also exert beneficial effects on body composition when used concomitantly with training and act additively to increase muscle strength and mass during periods with resistance training. Thus, the beta2 -adrenergic receptor seems like an attractive target in the development of anti-obesity drugs. However, future studies need to verify the long-term efficacy and safety of beta2 -agonists in individuals with obesity, particularly in those with comorbidities.
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Affiliation(s)
- Morten Hostrup
- Section of Integrative Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Johan Onslev
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
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Delli Paoli G, van de Laarschot D, Friesema ECH, Verkaik R, Giacco A, Senese R, Arp PP, Jhamai PM, Pagnotta SM, Broer L, Uitterlinden AG, Lanni A, Zillikens MC, de Lange P. Short-Term, Combined Fasting and Exercise Improves Body Composition in Healthy Males. Int J Sport Nutr Exerc Metab 2020; 30:386-395. [PMID: 32998111 DOI: 10.1123/ijsnem.2020-0058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 01/12/2023]
Abstract
Fasting enhances the beneficial metabolic outcomes of exercise; however, it is unknown whether body composition is favorably modified on the short term. A baseline-follow-up study was carried out to assess the effect of an established protocol involving short-term combined exercise with fasting on body composition. One hundred seven recreationally exercising males underwent a 10-day intervention across 15 fitness centers in the Netherlands involving a 3-day gradual decrease of food intake, a 3-day period with extremely low caloric intake, and a gradual 4-day increase to initial caloric intake, with daily 30-min submaximal cycling. Using dual-energy X-ray absorptiometry analysis, all subjects substantially lost total body mass (-3.9 ± 1.9 kg; p < .001) and fat mass (-3.3 ± 1.3 kg; p < .001). Average lean mass was lost (-0.6 ± 1.5 kg; p < .001), but lean mass as a percentage of total body mass was not reduced. The authors observed a loss of -3.9 ± 1.9% android fat over total fat mass (p < .001), a loss of -2.2 ± 1.9% gynoid over total fat mass (p < .001), and reduced android/gynoid ratios (-0.05 ± 0.1; p < .001). Analyzing 15 preselected single-nucleotide polymorphisms in 13 metabolism-related genes revealed trending associations for thyroid state-related single-nucleotide polymorphisms rs225014 (deiodinase 2) and rs35767 (insulin-like growth factor1), and rs1053049 (PPARD). In conclusion, a short period of combined fasting and exercise leads to a substantial loss of body and fat mass without a loss of lean mass as a percentage of total mass.
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Affiliation(s)
- Giuseppe Delli Paoli
- Università degli Studi della Campania "Luigi Vanvitelli"
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
| | - Denise van de Laarschot
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
- Erasmus University Medical Center
| | - Edith C H Friesema
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
- Erasmus University Medical Center
| | - Remco Verkaik
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
- European Nutraceutical Services
| | - Antonia Giacco
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
- Università degli Studi del Sannio
| | - Rosalba Senese
- Università degli Studi della Campania "Luigi Vanvitelli"
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
| | | | | | | | | | - André G Uitterlinden
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
- Erasmus University Medical Center
| | - Antonia Lanni
- Università degli Studi della Campania "Luigi Vanvitelli"
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
| | - M Carola Zillikens
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
- Erasmus University Medical Center
| | - Pieter de Lange
- Università degli Studi della Campania "Luigi Vanvitelli"
- European Consortium for Lifestyle, Exercise, Adaptation, and Nutrition (EULEAN)
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Horne J, Gilliland J, O'Connor C, Seabrook J, Madill J. Enhanced long-term dietary change and adherence in a nutrigenomics-guided lifestyle intervention compared to a population-based (GLB/DPP) lifestyle intervention for weight management: results from the NOW randomised controlled trial. BMJ Nutr Prev Health 2020; 3:49-59. [PMID: 33235971 PMCID: PMC7664486 DOI: 10.1136/bmjnph-2020-000073] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 01/30/2023] Open
Abstract
Background Adherence to nutritional guidelines for chronic disease prevention and management remains a challenge in clinical practice. Innovative strategies are needed to help optimise dietary behaviour change. Objective The objective of this study was to determine if a nutrigenomics-guided lifestyle intervention programme could be used to motivate greater dietary adherence and change in dietary intake short-term, moderate-term and long-term compared to the gold-standard population-based weight management intervention (Group Lifestyle Balance (GLB)/Diabetes Prevention Programme (DPP)). Design The Nutrigenomics, Overweight/Obesity, and Weight Management (NOW) randomised controlled trial is a pragmatic, parallel-group, superiority clinical trial (n=140), which was conducted at the East Elgin Family Health Team (EEFHT). GLB weight management groups were prerandomised 1:1 to receive either the standard GLB programme or a modified GLB+nutrigenomics (GLB+NGx) programme. Three 24-hour recalls were collected at baseline, 3, 6 and 12 months using the validated multiple pass method. Research assistants collecting the three 24-hour recalls were blinded to the participants’ group assignments. Statistical analyses included split plot analyses of variance (ANOVAs), two-way ANOVAs, binary logistic regression, χ2 and Fisher’s exact tests. Using the Theory of Planned Behaviour as guidance, key confounding factors of behaviour change were considered in the analyses. This study was registered with clinicaltrials.gov (NCT03015012). Results Only the GLB+NGx group significantly reduced their total fat intake from baseline to 12-month follow-up (from 36.0%±4.8% kcal to 30.2%±8.7% kcal, p=0.02). Long-term dietary adherence to total fat and saturated fat guidelines was also significantly (p<0.05) greater in the GLB+NGx group compared to the standard GLB group. Conclusions Weight management interventions guided by nutrigenomics can motivate long-term improvements in dietary fat intake above and beyond gold-standard population-based interventions.
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Affiliation(s)
- Justine Horne
- East Elgin Family Health Team, Aylmer, Ontario, Canada.,Health and Rehabilitation Sciences, Western University, London, Ontario, Canada
| | - Jason Gilliland
- Department of Paediatrics, Western University, London, Ontario, Canada.,School of Health Studies, Western University, London, Ontario, Canada.,Department of Geography, Western University, London, Ontario, Canada.,Children's Health Research Institute, London, Ontario, Canada.,Lawson Health Research Institute, London, Ontario, Canada.,Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada
| | - Colleen O'Connor
- Lawson Health Research Institute, London, Ontario, Canada.,School of Food and Nutritional Sciences, Brescia University College (Western University), London, Ontario, Canada
| | - Jamie Seabrook
- Department of Paediatrics, Western University, London, Ontario, Canada.,Children's Health Research Institute, London, Ontario, Canada.,Lawson Health Research Institute, London, Ontario, Canada.,Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada.,School of Food and Nutritional Sciences, Brescia University College (Western University), London, Ontario, Canada
| | - Janet Madill
- Lawson Health Research Institute, London, Ontario, Canada.,School of Food and Nutritional Sciences, Brescia University College (Western University), London, Ontario, Canada
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Genetic Polymorphisms in ADORA2A and CYP1A2 Influence Caffeine's Effect on Postprandial Glycaemia. Sci Rep 2019; 9:10532. [PMID: 31324842 PMCID: PMC6642114 DOI: 10.1038/s41598-019-46931-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 07/05/2019] [Indexed: 12/31/2022] Open
Abstract
The liver enzyme cytochrome P450 1A2 (CYP1A2) is responsible for 90% of caffeine metabolism, while caffeine exerts many of its effects via antagonist binding to adenosine A2a receptors (ADORA2A). This study aimed to examine whether functional single nucleotide polymorphisms (SNPs) in 1976T > C (ADORA2A; rs5751876) and −163C > A (CYP1A2; rs762551) influence the effect of caffeine on the postprandial glucose (GLU) response to a carbohydrate meal. We report that individuals with the 1976T > C CC, but not CT/TT genotypes display elevated GLU levels after consuming caffeine and carbohydrate (CHO + CAFF) versus carbohydrate only (CHO). The GLU area under the curve (AUC) was also greater during the CHO + CAFF condition compared to the CHO condition in CC, but not the CT/TT genotypes. The −163C > A AC/CC, but not AA, genotypes displayed greater GLU concentrations 60-min post meal during CHO + CAFF versus CHO. Our data suggest that caffeine-induced impairments in postprandial glycaemia are related to 1976T > C and −163C > A SNPs.
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