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Capra BT, Hudson S, Helder M, Laskaridou E, Johnson AL, Gilmore C, Marinik E, Hedrick VE, Savla J, David LA, Davy KP, Davy BM. Ultra-processed food intake, gut microbiome, and glucose homeostasis in mid-life adults: Background, design, and methods of a controlled feeding trial. Contemp Clin Trials 2024; 137:107427. [PMID: 38184104 PMCID: PMC10922925 DOI: 10.1016/j.cct.2024.107427] [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: 10/06/2023] [Revised: 12/06/2023] [Accepted: 01/01/2024] [Indexed: 01/08/2024]
Abstract
BACKGROUND Aging is associated with gut dysbiosis, low-grade inflammation, and increased risk of type 2 diabetes (T2D). Prediabetes, which increases T2D and cardiovascular disease risk, is present in 45-50% of mid-life adults. The gut microbiota may link ultra-processed food (UPF) with inflammation and T2D risk. METHODS Following a 2-week standardized lead-in diet (59% UPF), adults aged 40-65 years will be randomly assigned to a 6-week diet emphasizing either UPF (81% total energy) or non-UPF (0% total energy). Measurements of insulin sensitivity, 24-h and postprandial glycemic control, gut microbiota composition/function, fecal short chain fatty acids, intestinal inflammation, inflammatory cytokines, and vascular function will be made before and following the 6-week intervention period. Prior to recruitment, menus were developed in order to match UPF and non-UPF conditions based upon relevant dietary factors. Menus were evaluated for palatability and costs, and the commercial additive content of study diets was quantified to explore potential links with outcomes. RESULTS Overall diet palatability ratings were similar (UPF = 7.6 ± 1.0; Non-UPF = 6.8 ± 1.5; Like Moderately = 7, Like Very Much = 8). Cost analysis (food + labor) of the 2000 kcal menu (7-d average) revealed lower costs for UPF compared to non-UPF diets ($20.97/d and $40.23/d, respectively). Additive exposure assessment of the 2000 kcal UPF diet indicated that soy lecithin (16×/week), citric acid (13×/week), sorbic acid (13×/week), and sodium citrate (12×/week) were the most frequently consumed additives. CONCLUSIONS Whether UPF consumption impairs glucose homeostasis in mid-life adults is unknown. Findings will address this research gap and contribute information on how UPF consumption may influence T2D development.
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Affiliation(s)
- Bailey T Capra
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 229 Wallace Hall, Blacksburg, VA 24061, United States of America; Virginia Tech Translational Obesity Research Interdisciplinary Graduate Education Program, United States of America.
| | - Summer Hudson
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 229 Wallace Hall, Blacksburg, VA 24061, United States of America
| | - McKenna Helder
- Department of Food Science and Technology, Virginia Tech,United States of America
| | - Eleni Laskaridou
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 229 Wallace Hall, Blacksburg, VA 24061, United States of America; Virginia Tech Translational Obesity Research Interdisciplinary Graduate Education Program, United States of America
| | - Aubrey L Johnson
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 229 Wallace Hall, Blacksburg, VA 24061, United States of America; Virginia Tech Translational Obesity Research Interdisciplinary Graduate Education Program, United States of America
| | - Carson Gilmore
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 229 Wallace Hall, Blacksburg, VA 24061, United States of America
| | - Elaina Marinik
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 229 Wallace Hall, Blacksburg, VA 24061, United States of America; Virginia Tech Translational Obesity Research Interdisciplinary Graduate Education Program, United States of America
| | - Valisa E Hedrick
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 229 Wallace Hall, Blacksburg, VA 24061, United States of America; Virginia Tech Translational Obesity Research Interdisciplinary Graduate Education Program, United States of America
| | - Jyoti Savla
- Virginia Tech Translational Obesity Research Interdisciplinary Graduate Education Program, United States of America; Center for Gerontology, Virginia Tech, United States of America
| | - Lawrence A David
- Department of Molecular Genetics & Microbiology, Duke University, United States of America; Duke Microbiome Center, Duke University, United States of America
| | - Kevin P Davy
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 229 Wallace Hall, Blacksburg, VA 24061, United States of America; Virginia Tech Translational Obesity Research Interdisciplinary Graduate Education Program, United States of America
| | - Brenda M Davy
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 229 Wallace Hall, Blacksburg, VA 24061, United States of America; Virginia Tech Translational Obesity Research Interdisciplinary Graduate Education Program, United States of America
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Arimoto M, Yamamoto Y, Imaoka W, Kuroshima T, Toragai R, Nakamura M, Ito Y, Ai M. Small Dense Low-Density Lipoprotein Cholesterol Levels in Breakfast Skippers and Staple Foods Skippers. J Atheroscler Thromb 2023; 30:1376-1388. [PMID: 36878535 PMCID: PMC10564629 DOI: 10.5551/jat.64024] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/17/2023] [Indexed: 03/08/2023] Open
Abstract
AIMS Skipping breakfast is known as a cardiovascular disease (CVD) risk. Recently, eating and dietary patterns have been varied in many countries, however, the mechanisms of promoting CVD are still unclear. Our goal was to assess the effects of eating and dietary patterns on CVD risk factors, with a focus on lipid parameters including serum concentration of small dense low-density lipoprotein cholesterol (sdLDL-C). METHODS Subjects consisted of 27,997 Japanese men and women, who had medical check-up. Lipid parameters including sdLDL-C levels in breakfast skippers were compared with those in breakfast eaters. Lipid parameters in staple foods skippers were also compared with those in staple foods eaters. RESULTS Breakfast skippers had significantly (p<0.01) higher serum levels of median sdLDL-C than breakfast eaters in both genders (34.7 versus 32.0 mg/dL in men, 25.4 versus 24.9 mg/dL in women, respectively), and the same was true for sdLDL-C/LDL-C ratio (0.276 versus 0.260 in men, 0.218 versus 0.209 in women, respectively). Similarly, staple foods skippers had significantly higher sdLDL-C level than staple foods eaters in both genders (34.1 versus 31.6 mg/dL in men, 25.8 versus 24.7 mg/dL in women), and the same went for sdLDL-C/LDL-C ratio (0.278 versus 0.256 in men, 0.215 versus 0.208 mg/dL in women, respectively). CONCLUSION Our data indicate that both skipping breakfast and having meals without staple foods increase serum sdLDL-C concentration and cause unfavorable lipid profiles, and then may promote CVD. These finding provide evidence for the importance of having breakfast and meals with staple foods for preventing CVD.
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Affiliation(s)
- Masako Arimoto
- Department of Insured Medical Care Management, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Yasushi Yamamoto
- Kansai Occupational Health Association, ACTY Health Evaluation Center, Osaka, Japan
| | - Wataru Imaoka
- Kansai Occupational Health Association, ACTY Health Evaluation Center, Osaka, Japan
| | - Toshio Kuroshima
- Kansai Occupational Health Association, Senri LC Health Evaluation Center, Osaka, Japan
| | - Ryoko Toragai
- Kansai Occupational Health Association, Senri LC Health Evaluation Center, Osaka, Japan
| | - Marie Nakamura
- Department of Insured Medical Care Management, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Koshigaya Laketown Clinic, Saitama, Japan
| | - Yasuki Ito
- Vaccine & Diagnostics R&D department, Denka Company Ltd., Niigata, Japan
| | - Masumi Ai
- Department of Insured Medical Care Management, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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3
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Ağagündüz D, Icer MA, Yesildemir O, Koçak T, Kocyigit E, Capasso R. The roles of dietary lipids and lipidomics in gut-brain axis in type 2 diabetes mellitus. J Transl Med 2023; 21:240. [PMID: 37009872 PMCID: PMC10068184 DOI: 10.1186/s12967-023-04088-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 03/25/2023] [Indexed: 04/04/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM), one of the main types of Noncommunicable diseases (NCDs), is a systemic inflammatory disease characterized by dysfunctional pancreatic β-cells and/or peripheral insulin resistance, resulting in impaired glucose and lipid metabolism. Genetic, metabolic, multiple lifestyle, and sociodemographic factors are known as related to high T2DM risk. Dietary lipids and lipid metabolism are significant metabolic modulators in T2DM and T2DM-related complications. Besides, accumulated evidence suggests that altered gut microbiota which plays an important role in the metabolic health of the host contributes significantly to T2DM involving impaired or improved glucose and lipid metabolism. At this point, dietary lipids may affect host physiology and health via interaction with the gut microbiota. Besides, increasing evidence in the literature suggests that lipidomics as novel parameters detected with holistic analytical techniques have important roles in the pathogenesis and progression of T2DM, through various mechanisms of action including gut-brain axis modulation. A better understanding of the roles of some nutrients and lipidomics in T2DM through gut microbiota interactions will help develop new strategies for the prevention and treatment of T2DM. However, this issue has not yet been entirely discussed in the literature. The present review provides up-to-date knowledge on the roles of dietary lipids and lipidomics in gut-brain axis in T2DM and some nutritional strategies in T2DM considering lipids- lipidomics and gut microbiota interactions are given.
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Affiliation(s)
- Duygu Ağagündüz
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Gazi University, 06490, Ankara, Turkey.
| | - Mehmet Arif Icer
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Amasya University, 05100, Amasya, Turkey
| | - Ozge Yesildemir
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Bursa Uludag University, 16059, Bursa, Turkey
| | - Tevfik Koçak
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Gazi University, 06490, Ankara, Turkey
| | - Emine Kocyigit
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Ordu University, 52200, Ordu, Turkey
| | - Raffaele Capasso
- Department of Agricultural Sciences, University of Naples Federico II, Portici, 80055, Naples, Italy.
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Is vascular insulin resistance an early step in diet-induced whole-body insulin resistance? Nutr Diabetes 2022; 12:31. [PMID: 35676248 PMCID: PMC9177754 DOI: 10.1038/s41387-022-00209-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/09/2022] [Accepted: 05/25/2022] [Indexed: 11/30/2022] Open
Abstract
There is increasing evidence that skeletal muscle microvascular (capillary) blood flow plays an important role in glucose metabolism by increasing the delivery of glucose and insulin to the myocytes. This process is impaired in insulin-resistant individuals. Studies suggest that in diet-induced insulin-resistant rodents, insulin-mediated skeletal muscle microvascular blood flow is impaired post-short-term high fat feeding, and this occurs before the development of myocyte or whole-body insulin resistance. These data suggest that impaired skeletal muscle microvascular blood flow is an early vascular step before the onset of insulin resistance. However, evidence of this is still lacking in humans. In this review, we summarise what is known about short-term high-calorie and/or high-fat feeding in humans. We also explore selected animal studies to identify potential mechanisms. We discuss future directions aimed at better understanding the ‘early’ vascular mechanisms that lead to insulin resistance as this will provide the opportunity for much earlier screening and timing of intervention to assist in preventing type 2 diabetes.
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Jardine MA, Kahleova H, Levin SM, Ali Z, Trapp CB, Barnard ND. Perspective: Plant-Based Eating Pattern for Type 2 Diabetes Prevention and Treatment: Efficacy, Mechanisms, and Practical Considerations. Adv Nutr 2021; 12:2045-2055. [PMID: 34113961 PMCID: PMC8634508 DOI: 10.1093/advances/nmab063] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 02/01/2021] [Accepted: 05/04/2021] [Indexed: 12/14/2022] Open
Abstract
A plant-based eating pattern is associated with a reduced risk of developing type 2 diabetes and is highly effective in its treatment. Diets that emphasize whole grains, vegetables, fruits, and legumes and exclude animal products improve blood glucose concentrations, body weight, plasma lipid concentrations, and blood pressure and play an important role in reducing the risk of cardiovascular and microvascular complications. This article reviews scientific evidence on the effects of plant-based diets for the prevention and treatment of type 2 diabetes. The mechanisms by which plant-based diets improve body weight, insulin sensitivity, and β-cell function are described. Practical considerations including education, nutrition adequacy, and adjusting medications will enhance the success of patients who have diabetes.
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Affiliation(s)
| | - Hana Kahleova
- Department of Clinical Research, Physicians Committee for Responsible Medicine, Washington, DC, USA
| | - Susan M Levin
- Department of Nutrition, Physicians Committee for Responsible Medicine, Washington, DC, USA
| | - Zeeshan Ali
- Department of Nutrition, Physicians Committee for Responsible Medicine, Washington, DC, USA
| | - Caroline B Trapp
- Department of Nutrition, Physicians Committee for Responsible Medicine, Washington, DC, USA
| | - Neal D Barnard
- Department of Nutrition, Physicians Committee for Responsible Medicine, Washington, DC, USA
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6
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Barnard ND, Alwarith J, Rembert E, Brandon L, Nguyen M, Goergen A, Horne T, do Nascimento GF, Lakkadi K, Tura A, Holubkov R, Kahleova H. A Mediterranean Diet and Low-Fat Vegan Diet to Improve Body Weight and Cardiometabolic Risk Factors: A Randomized, Cross-over Trial. J Am Coll Nutr 2021; 41:127-139. [PMID: 33544066 DOI: 10.1080/07315724.2020.1869625] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Objective: Evidence suggests that both Mediterranean and vegan diets improve body weight and cardiometabolic risk factors, but their relative efficacy has not been compared in a randomized trial.Methods: In a randomized crossover trial, 62 overweight adults were randomly assigned to a Mediterranean or vegan diet for a 16-week period. Body weight, plasma lipids, blood pressure, and body composition (dual X-ray absorptiometry) were measured. Secondary measures included insulin resistance (Homeostasis Model Assessment, HOMA-IR), oral glucose insulin sensitivity (OGIS), and predicted insulin sensitivity (PREDIM) indices. Thereafter, participants were asked to return to their baseline diets for 4 weeks, after which they began the opposite diet for 16 weeks. The same parameters were measured before and after this 2nd 16-week period.Results: Overall net weight changes were 0.0 (Mediterranean) and -6.0 kg (vegan), (treatment effect -6.0 kg [95% CI -7.5 to -4.5]; p < 0.001). HOMA-IR decreased and OGIS increased on the vegan diet with no significant change on the Mediterranean diet (treatment effect -0.7 [95% CI, -1.8 to +0.4]; p = 0.21; and +35.8 mL/min/m2 [95% CI, +13.2 to +58.3]; p = 0.003, respectively). PREDIM did not change significantly in either group. Among participants with no medication changes, total and LDL-cholesterol decreased 18.7 mg/dL (0.5 mmol/L) and 15.3 mg/dL (0.4 mmol/L), respectively, on the vegan diet, compared with no significant change on the Mediterranean diet (treatment effect -15.6 [-24.6 to -6.6]; p = 0.001 and -14.8 [-23.5 to -6.2]; p = 0.001, respectively); systolic and diastolic blood pressure decreased 9.3 and 7.3 mmHg on the Mediterranean diet, compared with 3.4 and 4.1 mmHg on the vegan diet (treatment effect +5.9 [95% CI +1.0 to +10.9]; p = 0.02; and +1.8 [95% CI -4.6 to +8.1]; p = 0.58, respectively).Conclusions: A low-fat vegan diet improved body weight, lipid concentrations, and insulin sensitivity, both from baseline and compared with a Mediterranean diet. Blood pressure decreased on both diets, more on the Mediterranean diet.Clinical trial registration: ClinicalTrials.gov number, NCT03698955 https://clinicaltrials.gov/ct2/show/NCT03698955?term=NCT03698955&draw=2&rank=1.
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Affiliation(s)
- Neal D Barnard
- Physicians Committee for Responsible Medicine, Washington, DC, USA.,Adjunct Faculty, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Jihad Alwarith
- Physicians Committee for Responsible Medicine, Washington, DC, USA
| | - Emilie Rembert
- Physicians Committee for Responsible Medicine, Washington, DC, USA
| | - Liz Brandon
- Physicians Committee for Responsible Medicine, Washington, DC, USA
| | - Minh Nguyen
- Physicians Committee for Responsible Medicine, Washington, DC, USA
| | - Andrea Goergen
- Physicians Committee for Responsible Medicine, Washington, DC, USA
| | - Taylor Horne
- Physicians Committee for Responsible Medicine, Washington, DC, USA
| | | | | | - Andrea Tura
- Metabolic Unit, CNR Institute of Neuroscience, Padua, Italy
| | - Richard Holubkov
- School of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Hana Kahleova
- Physicians Committee for Responsible Medicine, Washington, DC, USA
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7
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Fritzen AM, Lundsgaard AM, Kiens B. Tuning fatty acid oxidation in skeletal muscle with dietary fat and exercise. Nat Rev Endocrinol 2020; 16:683-696. [PMID: 32963340 DOI: 10.1038/s41574-020-0405-1] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/12/2020] [Indexed: 12/31/2022]
Abstract
Both the consumption of a diet rich in fatty acids and exercise training result in similar adaptations in several skeletal muscle proteins. These adaptations are involved in fatty acid uptake and activation within the myocyte, the mitochondrial import of fatty acids and further metabolism of fatty acids by β-oxidation. Fatty acid availability is repeatedly increased postprandially during the day, particularly during high dietary fat intake and also increases during, and after, aerobic exercise. As such, fatty acids are possible signalling candidates that regulate transcription of target genes encoding proteins involved in muscle lipid metabolism. The mechanism of signalling might be direct or indirect targeting of peroxisome proliferator-activated receptors by fatty acid ligands, by fatty acid-induced NAD+-stimulated activation of sirtuin 1 and/or fatty acid-mediated activation of AMP-activated protein kinase. Lactate might also have a role in lipid metabolic adaptations. Obesity is characterized by impairments in fatty acid oxidation capacity, and individuals with obesity show some rigidity in increasing fatty acid oxidation in response to high fat intake. However, individuals with obesity retain improvements in fatty acid oxidation capacity in response to exercise training, thereby highlighting exercise training as a potential method to improve lipid metabolic flexibility in obesity.
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Affiliation(s)
- Andreas Mæchel Fritzen
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Anne-Marie Lundsgaard
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Bente Kiens
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark.
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9
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Baugh ME, Bowser SM, McMillan RP, Davy BM, Essenmacher LA, Neilson AP, Hulver MW, Davy KP. Postprandial skeletal muscle metabolism following a high-fat diet in sedentary and endurance-trained males. J Appl Physiol (1985) 2020; 128:872-883. [PMID: 32163335 DOI: 10.1152/japplphysiol.00576.2019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Our objective was to determine the influence of a high-fat diet (HFD) on fasting and postprandial skeletal muscle substrate metabolism in endurance-trained (ET) compared with sedentary (SED) humans. SED (n = 17) and ET (n = 7) males were control-fed a 10-day moderate-fat diet followed by a 5-day isocaloric HFD (55% fat, 30% carbohydrate). Skeletal muscle biopsies were taken in the fasted condition and 4 h after a high-fat meal (820 kcals; 63% fat and 25% carbohydrate). Palmitate-induced suppression of pyruvate oxidation, an indication of substrate preference, and oxidation of fat and glucose were measured in homogenized skeletal muscle in fasted and fed states. Postprandial responses were calculated as percent changes from fasting to fed states. Postprandial suppression of pyruvate oxidation was maintained after the HFD in ET, but not SED skeletal muscle, suggesting greater adaptability to dietary intake changes in the former. Fasting total fat oxidation increased due to the HFD in ET skeletal muscle (P = 0.006), which was driven by incomplete fat oxidation (P = 0.008). Fasting fat oxidation remained unchanged in skeletal muscle of SED individuals. Yet, postprandial fat oxidation was similar between groups. Fasting glucose oxidation was elevated after the HFD in ET (P = 0.036), but not SED, skeletal muscle. Postprandial glucose oxidation was reduced due to the HFD in SED (P = 0.002), but not ET, skeletal muscle. These findings provide insight into differing substrate metabolism responses between SED and ET individuals and highlight the role that the prevailing diet may play in modulating fasting and postprandial metabolic responses in skeletal muscle.NEW & NOTEWORTHY The relationship between high dietary fat intake and physical activity level and their combined effect on skeletal muscle substrate metabolism remains unclear. We assessed the influence of the prevailing diet in modulating substrate oxidation in skeletal muscle of endurance-trained compared with sedentary humans during a high-fat challenge meal. Collectively, our findings demonstrate the adaptability of skeletal muscle in endurance-trained individuals to high dietary fat intake.
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Affiliation(s)
- Mary Elizabeth Baugh
- Section on Gerontology and Geriatric Medicine, Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Suzanne M Bowser
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, Netherlands
| | - Ryan P McMillan
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia.,Metabolic Phenotyping Core, Virginia Tech, Blacksburg, Virginia
| | - Brenda M Davy
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia.,Translational Obesity Research Interdisciplinary Graduate Education Program, Virginia Tech, Blacksburg, Virginia
| | | | - Andrew P Neilson
- Plants for Human Health Institute, Department of Food, Bioprocessing, and Nutrition Sciences, North Carolina State University, Kannapolis, North Carolina
| | - Matthew W Hulver
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia.,Metabolic Phenotyping Core, Virginia Tech, Blacksburg, Virginia.,Translational Obesity Research Interdisciplinary Graduate Education Program, Virginia Tech, Blacksburg, Virginia
| | - Kevin P Davy
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia.,Metabolic Phenotyping Core, Virginia Tech, Blacksburg, Virginia.,Translational Obesity Research Interdisciplinary Graduate Education Program, Virginia Tech, Blacksburg, Virginia
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10
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Bowser SM, McMillan RP, Boutagy NE, Tarpey MD, Smithson AT, Osterberg KL, Neilson AP, Davy BM, Davy KP, Hulver MW. Serum endotoxin, gut permeability and skeletal muscle metabolic adaptations following a short term high fat diet in humans. Metabolism 2020; 103:154041. [PMID: 31785256 DOI: 10.1016/j.metabol.2019.154041] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/24/2019] [Accepted: 11/22/2019] [Indexed: 01/10/2023]
Abstract
BACKGROUND Our previous work demonstrated that a short-term high fat diet (HFD) increased fasting serum endotoxin, altered postprandial excursions of serum endotoxin, and led to metabolic and transcriptional responses in skeletal muscle in young, healthy male humans. PURPOSE The purpose of the present study was to determine if a short-term high fat diet: 1) increases intestinal permeability and, in turn, fasting endotoxin concentrations and 2) decreases postprandial skeletal muscle fat oxidation. METHODS Thirteen normal weight young adult males (BMI 23.1 ± 0.8 kg/m2, age 22.2 ± 0.4 years) were fed a control diet (55% carbohydrate, 30% fat, 9% of which was saturated, 15% protein) for two weeks, followed by 5 days of an isocaloric HFD (30% carbohydrate, 55% fat, 25% of which was saturated, 15% protein, isocaloric to the control diet). Intestinal permeability (via four sugar probe test) was assessed in the fasting state. Both before and after the HFD, a high fat meal challenge (HFM, 820 kcal, 25% carbohydrate, 63% fat, 26% of which was saturated, and 12% protein) was administered. After an overnight fast, blood samples were collected before and every hour for 4 h after the HFM to assess endotoxin, and other serum blood measures. Muscle biopsies were obtained from the vastus lateralis before and 4 h after the HFM in order to assess substrate oxidation (glucose, fatty acid and pyruvate) using radiolabeled techniques. Insulin sensitivity was assessed via intravenous glucose tolerance test. Intestinal permeability, blood samples and muscle biopsies were assessed in the same manner before and following the HFD. MAIN FINDINGS Intestinal permeability was not affected by HFD (p > 0.05), but fasting endotoxin increased two fold following the HFD (p = 0.04). Glucose oxidation and fatty acid oxidation in skeletal muscle homogenates significantly increased after the HFM before the HFD (+97%, and +106% respectively) but declined after the HFM following 5 days of the HFD (-24% and +16% respectively). Fatty acid suppressibility of pyruvate oxidation increased significantly after the HFM (+32%) but this physiological effect was abolished following 5 days of the HFD (+7%). Insulin sensitivity did not change following the HFD. CONCLUSION These findings demonstrate that in healthy young men, consuming an isocaloric HFD for 5 days increases fasting endotoxin, independent of changes in gut permeability. These changes in endotoxin are accompanied by a broad effect on skeletal muscle substrate metabolism including increases in postprandial fat oxidation. Importantly, the latter occurs independent of changes in body weight and whole-body insulin sensitivity.
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Affiliation(s)
- Suzanne M Bowser
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, 338 Wallace Hall, 295 West Campus Drive, Blacksburg, VA 24061, USA.
| | - Ryan P McMillan
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, 338 Wallace Hall, 295 West Campus Drive, Blacksburg, VA 24061, USA; Virginia Tech Metabolic Phenotyping Core Facility, Integrated Life Science Building, 1981 Kraft Drive, Blacksburg, VA 24060, USA.
| | - Nabil E Boutagy
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, 338 Wallace Hall, 295 West Campus Drive, Blacksburg, VA 24061, USA.
| | - Michael D Tarpey
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, 338 Wallace Hall, 295 West Campus Drive, Blacksburg, VA 24061, USA.
| | - Andrew T Smithson
- Department of Food Science and Technology, Virginia Tech, Food Science Building (0418), 360 Duck Pond Drive, Blacksburg, VA 24060, USA.
| | - Kristin L Osterberg
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, 338 Wallace Hall, 295 West Campus Drive, Blacksburg, VA 24061, USA.
| | - Andrew P Neilson
- Department of Food Science and Technology, Virginia Tech, Food Science Building (0418), 360 Duck Pond Drive, Blacksburg, VA 24060, USA.
| | - Brenda M Davy
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, 338 Wallace Hall, 295 West Campus Drive, Blacksburg, VA 24061, USA.
| | - Kevin P Davy
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, 338 Wallace Hall, 295 West Campus Drive, Blacksburg, VA 24061, USA.
| | - Matthew W Hulver
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, 338 Wallace Hall, 295 West Campus Drive, Blacksburg, VA 24061, USA; Virginia Tech Metabolic Phenotyping Core Facility, Integrated Life Science Building, 1981 Kraft Drive, Blacksburg, VA 24060, USA.
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11
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Feng R, Sun G, Zhang Y, Sun Q, Ju L, Sun C, Wang C. Short-term high-fat diet exacerbates insulin resistance and glycolipid metabolism disorders in young obese men with hyperlipidemia, as determined by metabolomics analysis using ultra-HPLC-quadrupole time-of-flight mass spectrometry. J Diabetes 2019; 11:148-160. [PMID: 30058212 DOI: 10.1111/1753-0407.12828] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/24/2018] [Accepted: 07/24/2018] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The prevalence of obesity is increasing rapidly worldwide, and dietary intake is strongly associated with obesity-related chronic diseases. However, key metabolic perturbations in obese young men with hyperlipidemia after high-fat diet (HFD) intervention are not yet clear, and remain to be determined. The aim of this study was to investigate the effects of a short-term HFD on glycolipid metabolism, insulin resistance (IR), and urinary metabolomic profiling in young obese men with hyperlipidemia. METHODS Sixty young men (19-25 years; 30 normal weight, 30 obese with hyperlipidemia) were enrolled in the study. Differences in metabolomic profiling of urine between normal-weight and obese young men before and after 3 days intake of the HFD were investigated using ultra-HPLC-quadrupole time-of-flight mass spectrometry. RESULTS After the HFD intervention, total cholesterol (TC), low-density lipoprotein cholesterol, fasting plasma glucose, insulin, and homeostasis model assessment of insulin resistance (HOMA-IR) were significantly increased and high-density lipoprotein cholesterol was significantly decreased in obese men, but only TC was significantly increased in normal-weight subjects. Based on metabolic differences, normal-weight and obese men, and obese men before and after the HFD intervention could be separated into distinct clusters. Seventeen major metabolites were identified that were associated with type 2 diabetes mellitus, glycolipid metabolism and IR; the changes in these metabolites suggest metabolic changes in young obese males after short-term HFD intake. CONCLUSIONS The findings of this study may contribute to increased understanding of the early biological adaptations of obesity with hyperlipidemia to HFD for the early prevention and control of diabetes and IR.
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Affiliation(s)
- Rennan Feng
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Guozhang Sun
- Department of Neurosurgery, Heilongjiang Provincial Hospital, Harbin, China
| | - Yunbo Zhang
- Department of Environmental Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Qintong Sun
- Department of Environmental Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Liyan Ju
- Department of Laboratory, Harbin Center for Disease Control and Prevention, Harbin, China
| | - Changhao Sun
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Cheng Wang
- Department of Environmental Hygiene, Public Health College, Harbin Medical University, Harbin, China
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12
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Brunetta HS, de Paula GC, de Oliveira J, Martins EL, Dos Santos GJ, Galina A, Rafacho A, de Bem AF, Nunes EA. Decrement in resting and insulin-stimulated soleus muscle mitochondrial respiration is an early event in diet-induced obesity in mice. Exp Physiol 2019; 104:306-321. [PMID: 30578638 DOI: 10.1113/ep087317] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 12/19/2018] [Indexed: 01/08/2023]
Abstract
NEW FINDINGS What is the central question of this study? What are the temporal responses of mitochondrial respiration and mitochondrial responsivity to insulin in soleus muscle fibres from mice during the development of obesity and insulin resistance? What is the main finding and its importance? Short- and long-term feeding with a high-fat diet markedly reduced soleus mitochondrial respiration and mitochondrial responsivity to insulin before any change in glycogen synthesis. Muscle glycogen synthesis and whole-body insulin resistance were present after 14 and 28 days, respectively. Our findings highlight the plasticity of mitochondria during the development of obesity and insulin resistance. ABSTRACT Recently, significant attention has been given to the role of muscle mitochondrial function in the development of insulin resistance associated with obesity. Our aim was to investigate temporal alterations in mitochondrial respiration, H2 O2 emission and mitochondrial responsivity to insulin in permeabilized skeletal muscle fibres during the development of obesity in mice. Male Swiss mice (5-6 weeks old) were fed with a high-fat diet (60% calories from fat) or standard diet for 7, 14 or 28 days to induce obesity and insulin resistance. Diet-induced obese (DIO) mice presented with reduced glucose tolerance and hyperinsulinaemia after 7 days of high-fat diet. After 14 days, the expected increase in muscle glycogen content after systemic injection of glucose and insulin was not observed in DIO mice. At 28 days, blood glucose decay after insulin injection was significantly impaired. Complex I (pyruvate + malate) and II (succinate)-linked respiration and oxidative phosphorylation (ADP) were decreased after 7 days of high-fat diet and remained low in DIO mice after 14 and 28 days of treatment. Moreover, mitochondria from DIO mice were incapable of increasing respiratory coupling and ADP responsivity after insulin stimulation in all observed periods. Markers of mitochondrial content were reduced only after 28 days of treatment. The mitochondrial H2 O2 emission profile varied during the time course of DIO, with a reduction of H2 O2 emission in the early stages of DIO and an increased emission after 28 days of treatment. Our data demonstrate that DIO promotes transitory alterations in mitochondrial physiology during the early and late stages of insulin resistance related to obesity.
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Affiliation(s)
- Henver Simionato Brunetta
- Multicenter Graduate Program in Physiological Sciences, Federal University of Santa Catarina, Florianopólis, Santa Catrina, Brazil
| | - Gabriela Cristina de Paula
- Graduate Program in Biochemistry, Federal University of Santa Catarina, Florianopólis, Santa Catrina, Brazil
| | - Jade de Oliveira
- Graduate Program in Health Sciences, University of Extremo Sul Catarinense, Criciúma, Santa Catarina, Brazil
| | - Eduarda Lopes Martins
- Graduate Program in Medical Biochemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gustavo Jorge Dos Santos
- Multicenter Graduate Program in Physiological Sciences, Federal University of Santa Catarina, Florianopólis, Santa Catrina, Brazil
| | - Antonio Galina
- Graduate Program in Medical Biochemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alex Rafacho
- Multicenter Graduate Program in Physiological Sciences, Federal University of Santa Catarina, Florianopólis, Santa Catrina, Brazil
| | - Andreza Fabro de Bem
- Graduate Program in Biochemistry, Federal University of Santa Catarina, Florianopólis, Santa Catrina, Brazil.,Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Everson Araújo Nunes
- Multicenter Graduate Program in Physiological Sciences, Federal University of Santa Catarina, Florianopólis, Santa Catrina, Brazil
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13
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Plant-Based Diets for Cardiovascular Safety and Performance in Endurance Sports. Nutrients 2019; 11:nu11010130. [PMID: 30634559 PMCID: PMC6356661 DOI: 10.3390/nu11010130] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/10/2018] [Accepted: 12/11/2018] [Indexed: 12/04/2022] Open
Abstract
Studies suggest that endurance athletes are at higher-than-average risk for atherosclerosis and myocardial damage. The ability of plant-based regimens to reduce risk and affect performance was reviewed. The effect of plant-based diets on cardiovascular risk factors, particularly plasma lipid concentrations, body weight, and blood pressure, and, as part of a healthful lifestyle, reversing existing atherosclerotic lesions, may provide a substantial measure of cardiovascular protection. In addition, plant-based diets may offer performance advantages. They have consistently been shown to reduce body fat, leading to a leaner body composition. Because plants are typically high in carbohydrate, they foster effective glycogen storage. By reducing blood viscosity and improving arterial flexibility and endothelial function, they may be expected to improve vascular flow and tissue oxygenation. Because many vegetables, fruits, and other plant-based foods are rich in antioxidants, they help reduce oxidative stress. Diets emphasizing plant foods have also been shown to reduce indicators of inflammation. These features of plant-based diets may present safety and performance advantages for endurance athletes. The purpose of this review was to explore the role of nutrition in providing cardioprotection, with a focus on plant-based diets previously shown to provide cardiac benefits.
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14
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Sfyri PP, Yuldasheva NY, Tzimou A, Giallourou N, Crispi V, Aburima A, Beltran-Alvarez P, Patel K, Mougios V, Swann JR, Kearney MT, Matsakas A. Attenuation of oxidative stress-induced lesions in skeletal muscle in a mouse model of obesity-independent hyperlipidaemia and atherosclerosis through the inhibition of Nox2 activity. Free Radic Biol Med 2018; 129:504-519. [PMID: 30342191 DOI: 10.1016/j.freeradbiomed.2018.10.422] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 09/12/2018] [Accepted: 10/09/2018] [Indexed: 02/08/2023]
Abstract
Obesity leading to hyperlipidaemia and atherosclerosis is recognised to induce morphological and metabolic changes in many tissues. However, hyperlipidaemia can occur in the absence of obesity. The impact of the latter scenario on skeletal muscle and liver is not understood sufficiently. In this regard, we used the Apolipoprotein E-deficient (ApoE-/-) mouse model, an established model of hyperlipidaemia and atherosclerosis, that does not become obese when subjected to a high-fat diet, to determine the impact of Western-type diet (WD) and ApoE deficiency on skeletal muscle morphological, metabolic and biochemical properties. To establish the potential of therapeutic targets, we further examined the impact of Nox2 pharmacological inhibition on skeletal muscle redox biology. We found ectopic lipid accumulation in skeletal muscle and the liver, and altered skeletal muscle morphology and intramuscular triacylglycerol fatty acid composition. WD and ApoE deficiency had a detrimental impact in muscle metabolome, followed by perturbed gene expression for fatty acid uptake and oxidation. Importantly, there was enhanced oxidative stress in the skeletal muscle and development of liver steatosis, inflammation and oxidative protein modifications. Pharmacological inhibition of Nox2 decreased reactive oxygen species production and protein oxidative modifications in the muscle of ApoE-/- mice subjected to a Western-type diet. This study provides key evidence to better understand the pathophysiology of skeletal muscle in the context of hyperlipidaemia and atherosclerosis and identifies Nox2 as a potential target for attenuating oxidative stress in skeletal muscle in a mouse model of obesity-independent hyperlipidaemia.
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Affiliation(s)
- Pagona Panagiota Sfyri
- Molecular Physiology Laboratory, Centre for Atherothrombotic & Metabolic Disease, Hull York Medical School, United Kingdom
| | - Nadira Y Yuldasheva
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, United Kingdom
| | - Anastasia Tzimou
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sports Science at Thessaloniki, Aristotle University of Thessaloniki, Greece
| | - Natasa Giallourou
- Department of Surgery and Cancer, Division of Computational and Systems Medicine, Imperial College London, United Kingdom
| | - Vassili Crispi
- Molecular Physiology Laboratory, Centre for Atherothrombotic & Metabolic Disease, Hull York Medical School, United Kingdom
| | - Ahmed Aburima
- Molecular Physiology Laboratory, Centre for Atherothrombotic & Metabolic Disease, Hull York Medical School, United Kingdom
| | | | - Ketan Patel
- School of Biological Sciences, University of Reading, United Kingdom
| | - Vassilis Mougios
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sports Science at Thessaloniki, Aristotle University of Thessaloniki, Greece
| | - Jonathan R Swann
- Department of Surgery and Cancer, Division of Computational and Systems Medicine, Imperial College London, United Kingdom
| | - Mark T Kearney
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, United Kingdom
| | - Antonios Matsakas
- Molecular Physiology Laboratory, Centre for Atherothrombotic & Metabolic Disease, Hull York Medical School, United Kingdom.
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15
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Rasool S, Geetha T, Broderick TL, Babu JR. High Fat With High Sucrose Diet Leads to Obesity and Induces Myodegeneration. Front Physiol 2018; 9:1054. [PMID: 30258366 PMCID: PMC6143817 DOI: 10.3389/fphys.2018.01054] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 07/16/2018] [Indexed: 12/21/2022] Open
Abstract
Skeletal muscle utilizes both free fatty acids (FFAs) and glucose that circulate in the blood stream. When blood glucose levels acutely increase, insulin stimulates muscle glucose uptake, oxidation, and glycogen synthesis. Under these conditions, skeletal muscle preferentially oxidizes glucose while the oxidation of fatty acids (FAs) oxidation is reciprocally decreased. In metabolic disorders associated with insulin resistance, such as diabetes and obesity, both glucose uptake, and utilization muscle are significantly reduced causing FA oxidation to provide the majority of ATP for metabolic processes and contraction. Although the causes of this metabolic inflexibility or disrupted "glucose-fatty acid cycle" are largely unknown, a diet high in fat and sugar (HFS) may be a contributing factor. This metabolic inflexibility observed in models of obesity or with HFS feeding is detrimental because high rates of FA oxidation in skeletal muscle can lead to the buildup of toxic metabolites of fat metabolism and the accumulation of pro-inflammatory cytokines, which further exacerbate the insulin resistance. Further, HFS leads to skeletal muscle atrophy with a decrease in myofibrillar proteins and phenotypically characterized by loss of muscle mass and strength. Overactivation of ubiquitin proteasome pathway, oxidative stress, myonuclear apoptosis, and mitochondrial dysfunction are some of the mechanisms involved in muscle atrophy induced by obesity or in mice fed with HFS. In this review, we will discuss how HFS diet negatively impacts the various physiological and metabolic mechanisms in skeletal muscle.
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Affiliation(s)
- Suhail Rasool
- Department of Nutrition, Dietetics, and Hospitality Management, Auburn University, Auburn, AL, United States
| | - Thangiah Geetha
- Department of Nutrition, Dietetics, and Hospitality Management, Auburn University, Auburn, AL, United States
| | - Tom L Broderick
- Laboratory of Diabetes and Exercise Metabolism, Department of Physiology, Midwestern University, Glendale, AZ, United States
| | - Jeganathan R Babu
- Department of Nutrition, Dietetics, and Hospitality Management, Auburn University, Auburn, AL, United States
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16
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Horowitz JF, Ortega JF, Hinko A, Li M, Nelson RK, Mora-Rodriguez R. Changes in markers for cardio-metabolic disease risk after only 1-2 weeks of a high saturated fat diet in overweight adults. PLoS One 2018; 13:e0198372. [PMID: 29949578 PMCID: PMC6021040 DOI: 10.1371/journal.pone.0198372] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 05/17/2018] [Indexed: 12/30/2022] Open
Abstract
Purpose Diets high in saturated fat acids (SFA) have been linked with cardio-metabolic disease risk. The purpose of this study was to determine whether only 1–2 weeks of a high SFA diet could impact disease risk factors in overweight adults who normally eat a relatively low proportion of SFA (i.e., <40% of dietary fat). Methods Twelve overweight (BMI: 27±1 kg/m2) young adults were studied before and after a 2-week diet that increased the proportion of SFA (<40% to 60% of dietary fat), while maintaining their daily intake of total fat, carbohydrate, protein, and calories. Insulin resistance, blood pressure, plasma markers of liver damage, total plasma cholesterol concentrations, and fatty acid profile within plasma and skeletal muscle lipid pools were assessed before and after the intervention. Results Total plasma cholesterol concentration increased (148±5 vs. 164±8 mg/dl; P<0.05) after only one week, due exclusively to an increase in LDL-cholesterol (78±4 vs. 95±7 mg/dl; P<0.05). After two weeks, plasma aspartate amino transferase (AST) concentration increased (P<0.05) but we found no change in insulin resistance, or resting blood pressure. The diet increase the proportion of SFA in plasma (35±1% vs. 39±2%; P<0.05) and the intramyocellular triglyceride pool (32±1% vs. 37±1%; P<0.05) suggesting the fatty acids in these pools may readily exchange. Conclusions Although blood lipids remain within normal clinical range, increasing saturated fat in diet for only 2 weeks raises plasma markers of cardiovascular risk (LDL-cholesterol) and liver damage (AST). In overweight, but healthy-young adults SFA accumulate in plasma and muscle after only 1–2 weeks of dietary increase.
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Affiliation(s)
- Jeffrey F. Horowitz
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, United States of America
- * E-mail:
| | - Juan F. Ortega
- Exercise Physiology Lab, University of Castilla-La Mancha, Toledo, Spain
| | - Alexander Hinko
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Minghua Li
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Rachael K. Nelson
- College Health Professions, Health Sciences Department, Central Michigan University, Mt. Pleasant, Michigan, United States of America
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17
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Black AJ, Ravi S, Jefferson LS, Kimball SR, Schilder RJ. Dietary Fat Quantity and Type Induce Transcriptome-Wide Effects on Alternative Splicing of Pre-mRNA in Rat Skeletal Muscle. J Nutr 2017; 147:1648-1657. [PMID: 28768832 PMCID: PMC5572497 DOI: 10.3945/jn.117.254482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 06/07/2017] [Accepted: 06/28/2017] [Indexed: 12/18/2022] Open
Abstract
Background: Fat-enriched diets produce metabolic changes in skeletal muscle, which in turn can mediate changes in gene regulation.Objective: We examined the high-fat-diet-induced changes in skeletal muscle gene expression by characterizing variations in pre-mRNA alternative splicing.Methods: Affymetrix Exon Array analysis was performed on the transcriptome of the gastrocnemius/plantaris complex of male obesity-prone Sprague-Dawley rats fed a 10% or 60% fat (lard) diet for 2 or 8 wk. The validation of exon array results was focused on troponin T (Tnnt3). Tnnt3 splice form analyses were extended in studies of rats fed 10% or 30% fat diets across 1- to 8-wk treatment periods and rats fed 10% or 45% fat diets with fat sources from lard or mono- or polyunsaturated fats for 2 wk. Nuclear magnetic resonance (NMR) was used to measure body composition.Results: Consumption of a 60% fat diet for 2 or 8 wk resulted in alternative splicing of 668 and 726 pre-mRNAs, respectively, compared with rats fed a 10% fat diet. Tnnt3 transcripts were alternatively spliced in rats fed a 60% fat diet for either 2 or 8 wk. The high-fat-diet-induced changes in Tnnt3 alternative splicing were observed in rats fed a 30% fat diet across 1- to 8-wk treatment periods. Moreover, this effect depended on fat type, because Tnnt3 alternative splicing occurred in response to 45% fat diets enriched with lard but not in response to diets enriched with mono- or polyunsaturated fatty acids. Fat mass (a proxy for obesity as measured by NMR) did not differ between groups in any study.Conclusions: Rat skeletal muscle responds to overconsumption of dietary fat by modifying gene expression through pre-mRNA alternative splicing. Variations in Tnnt3 alternative splicing occur independently of obesity and are dependent on dietary fat quantity and suggest a role for saturated fatty acids in the high-fat-diet-induced modifications in Tnnt3 alternative splicing.
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Affiliation(s)
- Adam J Black
- Intercollege Graduate Degree Program in Physiology and,Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA; and
| | - Suhana Ravi
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA; and
| | - Leonard S Jefferson
- Intercollege Graduate Degree Program in Physiology and,Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA; and
| | - Scot R Kimball
- Intercollege Graduate Degree Program in Physiology and,Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA; and
| | - Rudolf J Schilder
- Departments of Entomology and Biology, Penn State University, University Park, State College, PA
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18
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Mahaney MC, Karere GM, Rainwater DL, Voruganti VS, Dick EJ, Owston MA, Rice KS, Cox LA, Comuzzie AG, VandeBerg JL. Diet-induced early-stage atherosclerosis in baboons: Lipoproteins, atherogenesis, and arterial compliance. J Med Primatol 2017. [PMID: 28620920 DOI: 10.1111/jmp.12283] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND The purpose of this study was to determine whether dietary manipulation can reliably induce early-stage atherosclerosis and clinically relevant changes in vascular function in an established, well-characterized non-human primate model. METHODS We fed 112 baboons a high-cholesterol, high-fat challenge diet for two years. We assayed circulating biomarkers of cardiovascular disease (CVD) risk, at 0, 7, and 104 weeks into the challenge; assessed arterial compliance noninvasively at 104 weeks; and measured atherosclerotic lesions in three major arteries at necropsy. RESULTS We observed evidence of atherosclerosis in all but one baboon fed the two-year challenge diet. CVD risk biomarkers, the prevalence, size, and complexity of arterial lesions, plus consequent arterial stiffness, were increased in comparison with dietary control animals. CONCLUSIONS Feeding baboons a high-cholesterol, high-fat diet for two years reliably induces atherosclerosis, with risk factor profiles, arterial lesions, and changes in vascular function also seen in humans.
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Affiliation(s)
- Michael C Mahaney
- South Texas Diabetes and Obesity Institute, School of Medicine, The University of Texas Rio Grande Valley, Brownsville, TX, USA
| | - Genesio M Karere
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - David L Rainwater
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Venkata S Voruganti
- Department of Nutrition and UNC Nutrition Research Institute, University of North Carolina, Kannapolis, NC, USA
| | - Edward J Dick
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Michael A Owston
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Karen S Rice
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Laura A Cox
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX, USA.,Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Anthony G Comuzzie
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX, USA.,Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - John L VandeBerg
- South Texas Diabetes and Obesity Institute, School of Medicine, The University of Texas Rio Grande Valley, Brownsville, TX, USA
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Stevens JR, McMillan RP, Resendes JT, Lloyd SK, Ali MM, Frisard MI, Hargett S, Keller SR, Hulver MW. Acute low-dose endotoxin treatment results in improved whole-body glucose homeostasis in mice. Metabolism 2017; 68:150-162. [PMID: 28183447 PMCID: PMC5319723 DOI: 10.1016/j.metabol.2016.12.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 11/30/2016] [Accepted: 12/07/2016] [Indexed: 11/23/2022]
Abstract
BACKGROUND Obese individuals present with an increased inflammatory tone as compared to healthy, normal-weight individuals, which is associated with insulin resistance. One factor hypothesized to contribute to increased inflammation in obese and diabetic states is elevated blood endotoxin levels, a condition known as metabolic endotoxemia. In non-obese and insulin sensitive individuals, circulating endotoxin concentrations fluctuate over the course of the day with elevations in the post-prandial state that return to baseline levels in the post-absorptive state. Evidence suggests that high-fat feeding alters these fluctuations causing endotoxin levels to remain high throughout the day. The effects of alterations in endotoxin levels on glucose metabolism are not clearly understood. PURPOSE/PROCEDURES The goal of this study was to determine the effects of both short-term and long-term increases in endotoxin (lipopolysaccharide, LPS) of a low magnitude on the glucose tolerance and insulin signaling in a human primary cell line as well as the effects of short-term endotoxin treatments on glucose homeostasis in a C57/Bl6 mouse model. First, we tested the hypothesis that short-term low-dose endotoxin treatments would augment insulin signaling and glycogen synthesis while long-term treatments would be disruptive in the cell culture model. Second, we examined if these short-term low dose treatments of endotoxin would contribute to similar improvements in whole-body glucose homeostasis in a mouse model. MAIN FINDINGS Contrary to our initial hypothesis, short-term endotoxin treatment had no effect on insulin signaling or glycogen synthesis, however long-term treatment indeed decreased glycogen synthesis (P<.05). Interestingly, short-term endotoxin treatment resulted in significant improvements in glucose homeostasis in the mouse model (P<.01); which is believed to be at least partly attributed to an inhibitory action of LPS on liver glucose production. CONCLUSIONS This research shows that low-magnitude, short-term changes in LPS can have significant effects on whole body glucose metabolism and this likely occurs through its direct actions on the liver. Additional studies are necessary to understand the mechanisms responsible for altered glucose metabolism in response to low magnitude changes in LPS levels.
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Affiliation(s)
- Joseph R Stevens
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA
| | - Ryan P McMillan
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA; Metabolic Phenotyping Core, Virginia Tech, Blacksburg, VA
| | - Justin T Resendes
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA
| | - Shannon K Lloyd
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA
| | - Mostafa M Ali
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA
| | - Madlyn I Frisard
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA
| | - Stefan Hargett
- Department of Medicine/Division of Endocrinology, University of Virginia, Charlottesville, VA
| | - Susanna R Keller
- Department of Medicine/Division of Endocrinology, University of Virginia, Charlottesville, VA
| | - Matthew W Hulver
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA; Metabolic Phenotyping Core, Virginia Tech, Blacksburg, VA.
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20
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Breusing N, Lagerpusch M, Engstler AJ, Bergheim I, Mueller MJ, Bosy-Westphal A. Influence of Energy Balance and Glycemic Index on Metabolic Endotoxemia in Healthy Men. J Am Coll Nutr 2017; 36:72-79. [PMID: 28060600 DOI: 10.1080/07315724.2016.1156036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Overfeeding with a high-fat and/or high-carbohydrate (CHO) diet is known to increase plasma concentrations of endotoxin (lipopolysaccharide [LPS]) that may lead to metabolic disturbances like insulin resistance. The impact of CHO quality (i.e., the glycemic index [GI]) independent of fat intake on metabolic endotoxemia remains unclear. In the present study, the effects of changes in energy balance and GI on plasma endotoxin were studied. METHODS Fifteen healthy young men overconsumed diets containing 65% CHO and 20% fat for 1 week (OF; +50% of energy requirement) followed by 3 weeks of caloric restriction (CR; -50% of energy requirement) and were then randomized to 2 weeks hypercaloric refeeding (RF, +50% of energy requirement) with either a low- or high-GI (40 vs 74) diet. RESULTS During OF, subjects gained 1.9 ± 0.7 kg body weight (+0.6 ± 0.8% fat mass) followed by a weight loss of 6.1 ± 0.8 kg (-2.0 ± 0.6% fat mass) and weight regain of 4.0 ± 0.6 kg (0.9 ± 0.8% fat mass). Fasting insulin and homeostasis model assessment-insulin resistance (HOMAIR) increased with OF and RF and decreased with CR, MatsudaISI decreased by 37% after RF (all p < 0.05). Endotoxin significantly increased by 30.8% with OF and by 24.7% with RF (both p < 0.05), whereas CR normalized endotoxin levels. No difference in endotoxin levels was observed between refeeding a hypercaloric high- or low-GI diet. Changes in endotoxin levels with RF were not related to changes in insulin sensitivity. CONCLUSION A hypercaloric diet (OF and RF) increased plasma endotoxin irrespective of GI, whereas a negative energy balance did not reduce endotoxemia. Impaired insulin sensitivity with hypercaloric refeeding on a high-GI diet was not explained by metabolic endotoxemia.
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Affiliation(s)
- Nicolle Breusing
- a University of Hohenheim, Institute of Nutritional Medicine , Stuttgart , GERMANY
| | - Merit Lagerpusch
- a University of Hohenheim, Institute of Nutritional Medicine , Stuttgart , GERMANY
| | | | - Ina Bergheim
- b Friedrich Schiller University, Institute of Nutrition , Jena , GERMANY
| | - Manfred J Mueller
- c Christian-Albrechts-University, Institute of Human Nutrition and Food Science , Kiel , GERMANY
| | - Anja Bosy-Westphal
- a University of Hohenheim, Institute of Nutritional Medicine , Stuttgart , GERMANY
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Sinha I, Sakthivel D, Varon DE. Systemic Regulators of Skeletal Muscle Regeneration in Obesity. Front Endocrinol (Lausanne) 2017; 8:29. [PMID: 28261159 PMCID: PMC5311070 DOI: 10.3389/fendo.2017.00029] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 02/01/2017] [Indexed: 12/19/2022] Open
Abstract
Skeletal muscle maintenance is a dynamic process and undergoes constant repair and regeneration. However, skeletal muscle regenerative capacity declines in obesity. In this review, we focus on obesity-associated changes in inflammation, metabolism, and impaired insulin signaling, which are pathologically dysregulated and ultimately result in a loss of muscle mass and function. In addition, we examine the relationships between skeletal muscle, liver, and visceral adipose tissue in an obese state.
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Affiliation(s)
- Indranil Sinha
- Division of Plastic Surgery, Brigham and Women’s Hospital, Boston, MA, USA
- *Correspondence: Indranil Sinha,
| | | | - David E. Varon
- Division of Plastic Surgery, Brigham and Women’s Hospital, Boston, MA, USA
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22
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Tarpey MD, Spangenburg EE. Exercise. Eat. Repeat. Focus on "Prior exercise training blunts short-term high-fat diet-induced weight gain". Am J Physiol Regul Integr Comp Physiol 2016; 311:R209-10. [PMID: 27335280 DOI: 10.1152/ajpregu.00257.2016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 06/14/2016] [Indexed: 11/22/2022]
Affiliation(s)
- Michael D Tarpey
- East Carolina Diabetes and Obesity Institute, Department of Physiology, School of Medicine, East Carolina University, Greenville, North Carolina
| | - Espen E Spangenburg
- East Carolina Diabetes and Obesity Institute, Department of Physiology, School of Medicine, East Carolina University, Greenville, North Carolina
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Numao S, Kawano H, Endo N, Yamada Y, Takahashi M, Konishi M, Sakamoto S. Short-term high-fat diet alters postprandial glucose metabolism and circulating vascular cell adhesion molecule-1 in healthy males. Appl Physiol Nutr Metab 2016; 41:895-902. [PMID: 27454856 DOI: 10.1139/apnm-2015-0702] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Short-term intake of a high-fat diet aggravates postprandial glucose metabolism; however, the dose-response relationship has not been investigated. We hypothesized that short-term intake of a eucaloric low-carbohydrate/high-fat diet (LCHF) would aggravate postprandial glucose metabolism and circulating adhesion molecules in healthy males. Seven healthy young males (mean ± SE; age: 26 ± 1 years) consumed either a eucaloric control diet (C, approximately 25% fats), a eucaloric intermediate-carbohydrate/intermediate-fat diet (ICIF, approximately 50% fats), or an LCHF (approximately 70% fats) for 3 days. An oral meal tolerance test (MTT) was performed after the 3-day dietary intervention. The concentrations of plasma glucose, insulin, glucagon-like peptide-1 (GLP-1), intercellular adhesion molecule-1, and vascular cell adhesion molecule-1 (VCAM-1) were determined at rest and during MTT. The incremental area under the curve (iAUC) of plasma glucose concentration during MTT was significantly higher in LCHF than in C (P = 0.009). The first-phase insulin secretion indexes were significantly lower in LCHF than in C (P = 0.04). Moreover, the iAUC of GLP-1 and VCAM-1 concentrations was significantly higher in LCHF than in C (P = 0.014 and P = 0.04, respectively). The metabolites from ICIF and C were not significantly different. In conclusion, short-term intake of eucaloric diet containing a high percentage of fats in healthy males excessively increased postprandial glucose and VCAM-1 concentrations and attenuated first-phase insulin release.
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Affiliation(s)
- Shigeharu Numao
- a Department of Health and Sports Sciences, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan.,b Waseda Institute for Sport Sciences, 2-579-15 Mikajima, Tokorozawa, Saitama 359-1192, Japan
| | - Hiroshi Kawano
- c Faculty of Letters, Kokushikan University, 4-28-1 Setagaya, Setagaya-ku, Tokyo 154-8515, Japan
| | - Naoya Endo
- d Japan Institute of Sports Sciences 3-15-1 Nishigaoka, Kita-ku, Tokyo 115-0056
| | - Yuka Yamada
- b Waseda Institute for Sport Sciences, 2-579-15 Mikajima, Tokorozawa, Saitama 359-1192, Japan
| | - Masaki Takahashi
- e Faculty of Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku, Tokyo 162-8480, Japan
| | - Masayuki Konishi
- f Faculty of Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama 359-1192, Japan
| | - Shizuo Sakamoto
- f Faculty of Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama 359-1192, Japan
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24
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Boutagy NE, McMillan RP, Frisard MI, Hulver MW. Metabolic endotoxemia with obesity: Is it real and is it relevant? Biochimie 2016; 124:11-20. [PMID: 26133659 PMCID: PMC4695328 DOI: 10.1016/j.biochi.2015.06.020] [Citation(s) in RCA: 251] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 06/23/2015] [Indexed: 02/06/2023]
Abstract
Obesity is associated with metabolic derangements in multiple tissues, which contribute to the progression of insulin resistance and the metabolic syndrome. The underlying stimulus for these metabolic derangements in obesity are not fully elucidated, however recent evidence in rodents and humans suggests that systemic, low level elevations of gut derived endotoxin (lipopolysaccharide, LPS) may play an important role in obesity related, whole-body and tissue specific metabolic perturbations. LPS initiates a well-characterized signaling cascade that elicits many pro- and anti-inflammatory pathways when bound to its receptor, Toll-Like Receptor 4 (TLR4). Low-grade elevation in plasma LPS has been termed "metabolic endotoxemia" and this state is associated with a heightened pro-inflammatory and oxidant environment often observed in obesity. Given the role of inflammatory and oxidative stress in the etiology of obesity related cardio-metabolic disease risk, it has been suggested that metabolic endotoxemia may serve a key mediator of metabolic derangements observed in obesity. This review provides supporting evidence of mechanistic associations with cell and animal models, and provides complimentary evidence of the clinical relevance of metabolic endotoxemia in obesity as it relates to inflammation and metabolic derangements in humans. Discrepancies with endotoxin detection are considered, and an alternate method of reporting metabolic endotoxemia is recommended until a standardized measurement protocol is set forth.
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Affiliation(s)
- Nabil E Boutagy
- The Department of Human Nutrition, Foods, and Exercise, 295 West Campus Drive, Virginia Tech, Blacksburg, VA 24061, USA; The Fralin Translational Obesity Research Center, 1981 Kraft Drive, Virginia Tech, Blacksburg, VA 24061, USA; The Metabolic Phenotyping Core, 1981 Kraft Drive, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Ryan P McMillan
- The Department of Human Nutrition, Foods, and Exercise, 295 West Campus Drive, Virginia Tech, Blacksburg, VA 24061, USA; The Fralin Translational Obesity Research Center, 1981 Kraft Drive, Virginia Tech, Blacksburg, VA 24061, USA; The Metabolic Phenotyping Core, 1981 Kraft Drive, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Madlyn I Frisard
- The Department of Human Nutrition, Foods, and Exercise, 295 West Campus Drive, Virginia Tech, Blacksburg, VA 24061, USA; The Fralin Translational Obesity Research Center, 1981 Kraft Drive, Virginia Tech, Blacksburg, VA 24061, USA; The Metabolic Phenotyping Core, 1981 Kraft Drive, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Matthew W Hulver
- The Department of Human Nutrition, Foods, and Exercise, 295 West Campus Drive, Virginia Tech, Blacksburg, VA 24061, USA; The Fralin Translational Obesity Research Center, 1981 Kraft Drive, Virginia Tech, Blacksburg, VA 24061, USA; The Metabolic Phenotyping Core, 1981 Kraft Drive, Virginia Tech, Blacksburg, VA 24061, USA.
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25
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Mechanisms by which cocoa flavanols improve metabolic syndrome and related disorders. J Nutr Biochem 2016; 35:1-21. [PMID: 27560446 DOI: 10.1016/j.jnutbio.2015.12.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 12/17/2015] [Accepted: 12/18/2015] [Indexed: 12/24/2022]
Abstract
Dietary administration of cocoa flavanols may be an effective complementary strategy for alleviation or prevention of metabolic syndrome, particularly glucose intolerance. The complex flavanol composition of cocoa provides the ability to interact with a variety of molecules, thus allowing numerous opportunities to ameliorate metabolic diseases. These interactions likely occur primarily in the gastrointestinal tract, where native cocoa flavanol concentration is high. Flavanols may antagonize digestive enzymes and glucose transporters, causing a reduction in glucose excursion, which helps patients with metabolic disorders maintain glucose homeostasis. Unabsorbed flavanols, and ones that undergo enterohepatic recycling, will proceed to the colon where they can exert prebiotic effects on the gut microbiota. Interactions with the gut microbiota may improve gut barrier function, resulting in attenuated endotoxin absorption. Cocoa may also positively influence insulin signaling, possibly by relieving insulin-signaling pathways from oxidative stress and inflammation and/or via a heightened incretin response. The purpose of this review is to explore the mechanisms that underlie these outcomes, critically review the current body of literature related to those mechanisms, explore the implications of these mechanisms for therapeutic utility, and identify emerging or needed areas of research that could advance our understanding of the mechanisms of action and therapeutic potential of cocoa flavanols.
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26
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Osterberg KL, Boutagy NE, McMillan RP, Stevens JR, Frisard MI, Kavanaugh JW, Davy BM, Davy KP, Hulver MW. Probiotic supplementation attenuates increases in body mass and fat mass during high-fat diet in healthy young adults. Obesity (Silver Spring) 2015; 23:2364-70. [PMID: 26466123 DOI: 10.1002/oby.21230] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 06/26/2015] [Accepted: 06/29/2015] [Indexed: 01/17/2023]
Abstract
OBJECTIVE The objective was to determine the effects of the probiotic, VSL#3, on body and fat mass, insulin sensitivity, and skeletal muscle substrate oxidation following 4 weeks of a high-fat diet. METHODS Twenty non-obese males (18-30 years) participated in the study. Following a 2-week eucaloric control diet, participants underwent dual X-ray absorptiometry to determine body composition, an intravenous glucose tolerance test to determine insulin sensitivity, and a skeletal muscle biopsy for measurement of in vitro substrate oxidation. Subsequently, participants were randomized to receive either VSL#3 or placebo daily during 4 weeks of consuming a High-fat (55% fat), hypercaloric diet (+1,000 kcal day(-1) ). Participants repeated all measurements following the intervention. RESULTS Body mass (1.42 ± 0.42 kg vs. 2.30 ± 0.28 kg) and fat mass (0.63 ± 0.09 kg vs. 1.29 ± 0.27 kg) increased less following the High-fat diet in the VSL#3 group compared with placebo. However, there were no significant changes in insulin sensitivity or in vitro skeletal muscle pyruvate and fat oxidation with the High-fat diet or VSL#3. CONCLUSIONS VSL#3 supplementation appears to have provided some protection from body mass gain and fat accumulation in healthy young men consuming a High-fat and high-energy diet.
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Affiliation(s)
- Kristin L Osterberg
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia, USA
- Fralin Translational Obesity Research Center, Virginia Tech, Blacksburg, Blacksburg, Virginia, USA
| | - Nabil E Boutagy
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia, USA
- Fralin Translational Obesity Research Center, Virginia Tech, Blacksburg, Blacksburg, Virginia, USA
- Metabolic Phenotyping Core, Virginia Tech, Blacksburg, Virginia, USA
| | - Ryan P McMillan
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia, USA
- Metabolic Phenotyping Core, Virginia Tech, Blacksburg, Virginia, USA
| | - Joseph R Stevens
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia, USA
- Fralin Translational Obesity Research Center, Virginia Tech, Blacksburg, Blacksburg, Virginia, USA
| | - Madlyn I Frisard
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia, USA
- Fralin Translational Obesity Research Center, Virginia Tech, Blacksburg, Blacksburg, Virginia, USA
- Metabolic Phenotyping Core, Virginia Tech, Blacksburg, Virginia, USA
| | - John W Kavanaugh
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia, USA
| | - Brenda M Davy
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia, USA
- Fralin Translational Obesity Research Center, Virginia Tech, Blacksburg, Blacksburg, Virginia, USA
| | - Kevin P Davy
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia, USA
- Fralin Translational Obesity Research Center, Virginia Tech, Blacksburg, Blacksburg, Virginia, USA
- Metabolic Phenotyping Core, Virginia Tech, Blacksburg, Virginia, USA
| | - Matthew W Hulver
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, Virginia, USA
- Fralin Translational Obesity Research Center, Virginia Tech, Blacksburg, Blacksburg, Virginia, USA
- Metabolic Phenotyping Core, Virginia Tech, Blacksburg, Virginia, USA
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