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Unlu Y, Piaggi P, Stinson EJ, De Baca TC, Rodzevik TL, Walter M, Krakoff J, Chang DC. Impaired metabolic flexibility to fasting is associated with increased ad libitum energy intake in healthy adults. Obesity (Silver Spring) 2024; 32:949-958. [PMID: 38650517 PMCID: PMC11045162 DOI: 10.1002/oby.24011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 04/25/2024]
Abstract
OBJECTIVE We investigated how changes in 24-h respiratory exchange ratio (RER) and substrate oxidation during fasting versus an energy balance condition influence subsequent ad libitum food intake. METHODS Forty-four healthy, weight-stable volunteers (30 male and 14 female; mean [SD], age 39.3 [11.0] years; BMI 31.7 [8.3] kg/m2) underwent 24-h energy expenditure measurements in a respiratory chamber during energy balance (50% carbohydrate, 30% fat, and 20% protein) and 24-h fasting. Immediately after each chamber stay, participants were allowed 24-h ad libitum food intake from computerized vending machines. RESULTS Twenty-four-hour RER decreased by 9.4% (95% CI: -10.4% to -8.5%; p < 0.0001) during fasting compared to energy balance, reflecting a decrease in carbohydrate oxidation (mean [SD], -2.6 [0.8] MJ/day; p < 0.0001) and an increase in lipid oxidation (2.3 [0.9] MJ/day; p < 0.0001). Changes in 24-h RER and carbohydrate oxidation in response to fasting were correlated with the subsequent energy intake such that smaller decreases in fasting 24-h RER and carbohydrate oxidation, but not lipid oxidation, were associated with greater energy intake after fasting (r = 0.31, p = 0.04; r = 0.40, p = 0.007; and r = -0.27, p = 0.07, respectively). CONCLUSIONS Impaired metabolic flexibility to fasting, reflected by an inability to transition away from carbohydrate oxidation, is linked with increased energy intake.
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Affiliation(s)
- Yigit Unlu
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - Paolo Piaggi
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
- Department of Information Engineering, University of Pisa, Pisa, Italy
| | - Emma J. Stinson
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - Tomás Cabeza De Baca
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - Theresa L. Rodzevik
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - Mary Walter
- Clinical Core Laboratory, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Jonathan Krakoff
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - Douglas C. Chang
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
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Celedonio JE, Arnold AC, Dupont WD, Ramirez CE, Diedrich A, Okamoto LE, Raj SR, Robertson D, Peltier AC, Biaggioni I, Shibao CA. Residual sympathetic tone is associated with reduced insulin sensitivity in patients with autonomic failure. Clin Auton Res 2015; 25:309-15. [PMID: 26359268 DOI: 10.1007/s10286-015-0307-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 06/18/2015] [Indexed: 11/28/2022]
Abstract
PURPOSE Parkinson disease, an α-synucleinopathy, is associated with reduced insulin sensitivity, impaired glucose tolerance, and diabetes mellitus. Importantly, these metabolic alterations have been shown to contribute to disease progression. The purpose of this study was to determine if reduced insulin sensitivity is also present in other α-synucleinopathies associated with autonomic failure. METHODS We studied 19 patients with multiple system atrophy and 26 patients with pure autonomic failure. For comparison, we studied 8 healthy controls matched for body mass index. Insulin sensitivity and beta cell function were calculated using fasting glucose and insulin levels according to the homeostatic model assessment 2. A multiple linear regression model was performed to determine factors that predict insulin sensitivity in autonomic failure. RESULTS There was a significant difference in insulin sensitivity among groups (P = 0.048). This difference was due to lower insulin sensitivity in multiple system atrophy patients: 64% [interquartile range (IQR), 43 to 117] compared to healthy controls 139% (IQR, 83 to 212), P = 0.032. The main factor that contributed to the reduced insulin sensitivity was the presence of supine hypertension and residual sympathetic tone. CONCLUSIONS Multiple system atrophy patients have reduced insulin sensitivity that is associated with residual sympathetic activation and supine hypertension. These patients may therefore be at high risk for development of impaired glucose tolerance and diabetes mellitus.
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Affiliation(s)
- Jorge E Celedonio
- Division of Clinical Pharmacology, Department of Medicine, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, 562 Preston Research Building, Nashville, TN, 37232, USA
| | - Amy C Arnold
- Division of Clinical Pharmacology, Department of Medicine, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, 562 Preston Research Building, Nashville, TN, 37232, USA
| | - William D Dupont
- Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, USA
| | - Claudia E Ramirez
- Division of Clinical Pharmacology, Department of Medicine, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, 562 Preston Research Building, Nashville, TN, 37232, USA
| | - André Diedrich
- Division of Clinical Pharmacology, Department of Medicine, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, 562 Preston Research Building, Nashville, TN, 37232, USA
| | - Luis E Okamoto
- Division of Clinical Pharmacology, Department of Medicine, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, 562 Preston Research Building, Nashville, TN, 37232, USA
| | - Satish R Raj
- Division of Clinical Pharmacology, Department of Medicine, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, 562 Preston Research Building, Nashville, TN, 37232, USA
| | - David Robertson
- Division of Clinical Pharmacology, Department of Medicine, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, 562 Preston Research Building, Nashville, TN, 37232, USA
| | - Amanda C Peltier
- Department of Neurology, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, USA
| | - Italo Biaggioni
- Division of Clinical Pharmacology, Department of Medicine, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, 562 Preston Research Building, Nashville, TN, 37232, USA
| | - Cyndya A Shibao
- Division of Clinical Pharmacology, Department of Medicine, The Autonomic Dysfunction Center, Vanderbilt University School of Medicine, 562 Preston Research Building, Nashville, TN, 37232, USA.
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Heng AE, Montaurier C, Cano N, Caillot N, Blot A, Meunier N, Pereira B, Marceau G, Sapin V, Jouve C, Boirie Y, Deteix P, Morio B. Energy expenditure, spontaneous physical activity and with weight gain in kidney transplant recipients. Clin Nutr 2015; 34:457-64. [DOI: 10.1016/j.clnu.2014.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 03/15/2014] [Accepted: 05/01/2014] [Indexed: 10/25/2022]
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