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Taylor AL, Dubuisson O, Pandey P, Zunica ERM, Vandanmagsar B, Dantas WS, Johnson A, Axelrod CL, Kirwan JP. Restricting bioenergetic efficiency enhances longevity and mitochondrial redox capacity in Drosophila melanogaster. Aging Cell 2024; 23:e14107. [PMID: 38343281 PMCID: PMC11113268 DOI: 10.1111/acel.14107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 05/24/2024] Open
Abstract
Mitochondria are essential for survival and as such, impairments in organelle homeostasis significantly accelerate age-related morbidity and mortality. Here, we determined the contribution of bioenergetic efficiency to life span and health span in Drosophila melanogaster utilizing the mitochondrial uncoupler BAM15. Life span was determined in flies fed a normal diet (ND) or high fat diet (HFD) supplemented with vehicle or BAM15. Locomotor function was determined by negative geotaxis assay in middle-aged flies fed vehicle or BAM15 under ND or HFD conditions. Redox capacity (high-resolution respirometry/fluorometry), citrate synthase (enzyme activity), mtDNA content (qPCR), gene expression (qPCR), and protein expression (western blot) were assessed in flight muscle homogenates of middle-aged flies fed vehicle or BAM15 ND. The molar ratio of H2O2 and O2 (H2O2:O2) in a defined respiratory state was calculated as a measure of redox balance. BAM15 extended life span by 9% on ND and 25% on HFD and improved locomotor activity by 125% on ND and 53% on HFD. Additionally, BAM15 enhanced oxidative phosphorylation capacity supported by pyruvate + malate, proline, and glycerol 3-phosphate. Concurrently, BAM15 enhanced the mitochondrial H2O2 production rate, reverse electron flow from mitochondrial glycerol-3-phosphate dehydrogenase (mGPDH) to Complex I, mGPDH, and Complex I without altering the H2O2:O2 ratio. BAM15 upregulated transcriptional signatures associated with mitochondrial function and fitness as well as antioxidant defense. BAM15-mediated restriction of bioenergetic efficiency prolongs life span and health span in Drosophila fed a ND or HFD. Improvements in life span and health span in ND were supported by synergistic enhancement of muscular redox capacity.
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Affiliation(s)
- Analisa L. Taylor
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Olga Dubuisson
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - Pritika Pandey
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - Elizabeth R. M. Zunica
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Bolormaa Vandanmagsar
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Wagner S. Dantas
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Alyssa Johnson
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - Christopher L. Axelrod
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - John P. Kirwan
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
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Zunica ERM, Heintz EC, Dantas WS, Hebert RC, Tanksley M, Beyl RA, Mader EC, Kirwan JP, Axelrod CL, Singh P. Effects of metformin on glucose metabolism and mitochondrial function in patients with obstructive sleep apnea: A pilot randomized trial. Physiol Rep 2024; 12:e15948. [PMID: 38346816 PMCID: PMC10861357 DOI: 10.14814/phy2.15948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/25/2024] [Accepted: 01/30/2024] [Indexed: 02/15/2024] Open
Abstract
Obstructive sleep apnea (OSA) is associated with increased risk for diabetes, and standard treatment with positive airway pressure (PAP) device shows inconsistent effects on glucose metabolism. Metformin is known to treat and prevent diabetes, but its effects on skeletal muscle mitochondrial function are not completely understood. Here, we evaluate the effects of metformin on glucose metabolism and skeletal muscle mitochondrial function in patients with OSA. Sixteen adults with obesity (50.9 ± 6.7 years, BMI: 36.5 ± 2.9 kg/m2 ) and moderate-to-severe OSA were provided with PAP treatment and randomized to 3 months of placebo (n = 8) or metformin (n = 8) treatment in a double-blind parallel-group design. Whole body glucose metabolism was determined by oral glucose tolerance test. A skeletal muscle biopsy was obtained to evaluate mitochondrial respiratory capacity and expression of proteins related to mitochondrial dynamics and energy metabolism. Whole body insulin-sensitivity (Matsuda index) did not change in metformin or placebo treated groups. However, metformin treatment prevented increases in insulin release relative to placebo during follow-up. Insulin area under the curve (AUC) and insulin to glucose AUC ratio increased in placebo but remained unchanged with metformin. Furthermore, metformin treatment improved skeletal muscle mitochondrial respiratory capacity and dynamics relative to placebo. Metformin treatment prevented the decline in whole body glucose homeostasis and skeletal muscle mitochondrial function in patients with moderate to severe OSA. Patients with OSA may benefit from the addition of metformin to prevent diabetes.
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Affiliation(s)
- Elizabeth R. M. Zunica
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Elizabeth C. Heintz
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Wagner S. Dantas
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - R. Caitlin Hebert
- Translational Physiology LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - MaKayla Tanksley
- Sleep and Cardiometabolic Health LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Robbie A. Beyl
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Edward C. Mader
- Louisiana State University Health Science CenterNew OrleansLouisianaUSA
| | - John P. Kirwan
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Christopher L. Axelrod
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Prachi Singh
- Sleep and Cardiometabolic Health LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
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Axelrod CL, Langohr I, Dantas WS, Heintz EC, Vandanmagsar B, Yang S, Zunica ERM, Townsend RL, Albaugh VL, Berthoud HR, Kirwan JP. Weight-independent effects of Roux-en-Y gastric bypass surgery on remission of nonalcoholic fatty liver disease in mice. Obesity (Silver Spring) 2023; 31:2960-2971. [PMID: 37731222 PMCID: PMC10895705 DOI: 10.1002/oby.23876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 06/07/2023] [Accepted: 07/03/2023] [Indexed: 09/22/2023]
Abstract
OBJECTIVE Obesity is a driver of non-alcoholic fatty liver disease (NAFLD), and interventions that decrease body weight, such as bariatric surgery and/or calorie restriction (CR), may serve as effective therapies. This study compared the effects of Roux-en-Y gastric bypass surgery (RYGB) and CR on hepatic function in mice with obesity and NAFLD. METHODS C57BL/6J mice were fed a high-fat diet to promote obesity. At 16 weeks of age, mice were randomized to sham surgery (sham), RYGB, or CR weight matched to RYGB (WM). Body weight/composition, food intake, and energy expenditure (EE) were measured throughout treatment. Liver histopathology was evaluated from H&E-stained sections. Hepatic enzymes and glycogen content were determined by ELISA. Transcriptional signatures were revealed via RNA sequencing. RESULTS RYGB reduced hepatic lipid content and adiposity while increasing EE and lean body mass relative to WM. Hepatic glycogen and bile acid content were increased after RYGB relative to sham and WM. RYGB activated enterohepatic signaling and genes regulating hepatic lipid homeostasis. CONCLUSIONS RYGB improved whole-body composition and hepatic lipid homeostasis to a greater extent than CR in mice. RYGB was associated with discrete remodeling of the hepatic transcriptome, suggesting that surgery may be mechanistically additive to CR.
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Affiliation(s)
- Christopher L Axelrod
- Integrative Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Ingeborg Langohr
- Department of Pathobiological Sciences, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Wagner S Dantas
- Integrative Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Elizabeth C Heintz
- Integrative Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Bolormaa Vandanmagsar
- Integrative Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Shengping Yang
- Department of Biostatistics, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Elizabeth R M Zunica
- Integrative Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - R Leigh Townsend
- Neurobiology and Nutrition Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
- Translational and Integrative Gastrointestinal and Endocrine Research Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Vance L Albaugh
- Translational and Integrative Gastrointestinal and Endocrine Research Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
- Metamor Institute, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Hans-Rudolf Berthoud
- Neurobiology and Nutrition Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - John P Kirwan
- Integrative Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
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Mey JT, Vandagmansar B, Dantas WS, Belmont KP, Axelrod CL, Kirwan JP. Ketogenic propensity is differentially related to lipid-induced hepatic and peripheral insulin resistance. Acta Physiol (Oxf) 2023; 239:e14054. [PMID: 37840478 DOI: 10.1111/apha.14054] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 09/11/2023] [Accepted: 09/26/2023] [Indexed: 10/17/2023]
Abstract
AIM Determine the ketogenic response (β-hydroxybutyrate, a surrogate of hepatic ketogenesis) to a controlled lipid overload in humans. METHODS In total, nineteen young, healthy adults (age: 28.4 ± 1.7 years; BMI: 22.7 ± 0.3 kg/m2 ) received either a 12 h overnight lipid infusion or saline in a randomized, crossover design. Plasma ketones and inflammatory markers were quantified by colorimetric and multiplex assays. Hepatic and peripheral insulin sensitivity was assessed by the hyperinsulinemic-euglycemic clamp. Skeletal muscle biopsies were obtained to quantify gene expression related to ketone body metabolism and inflammation. RESULTS By design, the lipid overload-induced hepatic (50%, p < 0.001) and peripheral insulin resistance (73%, p < 0.01) in healthy adults. Ketones increased with hyperlipidemia and were subsequently reduced with hyperinsulinemia during the clamp procedure (Saline: Basal = 0.22 mM, Insulin = 0.07 mM; Lipid: Basal = 0.78 mM, Insulin = 0.51 mM; 2-way ANOVA: Lipid p < 0.001, Insulin p < 0.001, Interaction p = 0.07). In the saline control condition, ketones did not correlate with hepatic or peripheral insulin sensitivity. Conversely, in the lipid condition, ketones were positively correlated with hepatic insulin sensitivity (r = 0.59, p < 0.01), but inversely related to peripheral insulin sensitivity (r = -0.64, p < 0.01). Hyperlipidemia increased plasma inflammatory markers, but did not impact skeletal muscle inflammatory gene expression. Gene expression related to ketone and fatty acid metabolism in skeletal muscle increased in response to hyperlipidemia. CONCLUSION This work provides important insight into the role of ketones in human health and suggests that ketone body metabolism is altered at the onset of lipid-induced insulin resistance.
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Affiliation(s)
- J T Mey
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - B Vandagmansar
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - W S Dantas
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - K P Belmont
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - C L Axelrod
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - J P Kirwan
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
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Abstract
Sarcopenic obesity, or the loss of muscle mass and function associated with excess adiposity, is a largely untreatable medical condition associated with diminished quality of life and increased risk of mortality. To date, it remains somewhat paradoxical and mechanistically undefined as to why a subset of adults with obesity develop muscular decline, an anabolic stimulus generally associated with retention of lean mass. Here, we review evidence surrounding the definition, etiology, and treatment of sarcopenic obesity with an emphasis on emerging regulatory nodes with therapeutic potential. We review the available clinical evidence largely focused on diet, lifestyle, and behavioral interventions to improve quality of life in patients with sarcopenic obesity. Based upon available evidence, relieving consequences of energy burden such as oxidative stress, myosteatosis, and/or mitochondrial dysfunction is a promising area for therapeutic development in the treatment and management of sarcopenic obesity.
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Affiliation(s)
- Christopher L Axelrod
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Wagner S Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - John P Kirwan
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA.
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6
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Pandey P, Wall PK, Lopez SR, Dubuisson OS, Zunica ER, Dantas WS, Kirwan JP, Axelrod CL, Johnson AE. A familial natural short sleep mutation promotes healthy aging and extends lifespan in Drosophila. Res Sq 2023:rs.3.rs-2882949. [PMID: 37398097 PMCID: PMC10312989 DOI: 10.21203/rs.3.rs-2882949/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Sleep loss typically imposes negative effects on animal health. However, humans with a rare genetic mutation in the dec2 gene (dec2P384R) present an exception; these individuals sleep less without the usual effects associated with sleep deprivation. Thus, it has been suggested that the dec2P384R mutation activates compensatory mechanisms that allows these individuals to thrive with less sleep. To test this directly, we used a Drosophila model to study the effects of the dec2P384R mutation on animal health. Expression of human dec2P384R in fly sleep neurons was sufficient to mimic the short sleep phenotype and, remarkably, dec2P384R mutants lived significantly longer with improved health despite sleeping less. The improved physiological effects were enabled, in part, by enhanced mitochondrial fitness and upregulation of multiple stress response pathways. Moreover, we provide evidence that upregulation of pro-health pathways also contributes to the short sleep phenotype, and this phenomenon may extend to other pro-longevity models.
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Affiliation(s)
- Pritika Pandey
- Louisiana State University, Department of Biological Sciences, Baton Rouge, LA 70803
| | - P. Kerr Wall
- Louisiana State University, Department of Biological Sciences, Baton Rouge, LA 70803
| | - Stephen R. Lopez
- Louisiana State University, Department of Biological Sciences, Baton Rouge, LA 70803
| | - Olga S. Dubuisson
- Louisiana State University, Department of Biological Sciences, Baton Rouge, LA 70803
| | - Elizabeth R.M. Zunica
- Pennington Biomedical Research Center, Integrated Physiology and Molecular Medicine Laboratory, Baton Rouge, LA, 70808
| | - Wagner S. Dantas
- Pennington Biomedical Research Center, Integrated Physiology and Molecular Medicine Laboratory, Baton Rouge, LA, 70808
| | - John P. Kirwan
- Pennington Biomedical Research Center, Integrated Physiology and Molecular Medicine Laboratory, Baton Rouge, LA, 70808
| | - Christopher L. Axelrod
- Pennington Biomedical Research Center, Integrated Physiology and Molecular Medicine Laboratory, Baton Rouge, LA, 70808
| | - Alyssa E. Johnson
- Louisiana State University, Department of Biological Sciences, Baton Rouge, LA 70803
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7
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Pandey P, Wall PK, Lopez SR, Dubuisson OS, Zunica ERM, Dantas WS, Kirwan JP, Axelrod CL, Johnson AE. A familial natural short sleep mutation promotes healthy aging and extends lifespan in Drosophila. bioRxiv 2023:2023.04.25.538137. [PMID: 37163058 PMCID: PMC10168263 DOI: 10.1101/2023.04.25.538137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Sleep loss typically imposes negative effects on animal health. However, humans with a rare genetic mutation in the dec2 gene ( dec2 P384R ) present an exception; these individuals sleep less without the usual effects associated with sleep deprivation. Thus, it has been suggested that the dec2 P384R mutation activates compensatory mechanisms that allows these individuals to thrive with less sleep. To test this directly, we used a Drosophila model to study the effects of the dec2 P384R mutation on animal health. Expression of human dec2 P384R in fly sleep neurons was sufficient to mimic the short sleep phenotype and, remarkably, dec2 P384R mutants lived significantly longer with improved health despite sleeping less. The improved physiological effects were enabled, in part, by enhanced mitochondrial fitness and upregulation of multiple stress response pathways. Moreover, we provide evidence that upregulation of pro-health pathways also contributes to the short sleep phenotype, and this phenomenon may extend to other pro-longevity models.
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Merege-Filho CAA, Gil SS, Kirwan JP, Murai IH, Dantas WS, Nucci MP, Pastorello B, de Lima AP, Bazán PR, Pereira RMR, de Sá-Pinto AL, Lima FR, Brucki SMD, de Cleva R, Santo MA, Leite CDC, Otaduy MCG, Roschel H, Gualano B. Exercise modifies hypothalamic connectivity and brain functional networks in women after bariatric surgery: a randomized clinical trial. Int J Obes (Lond) 2023; 47:165-174. [PMID: 36585494 PMCID: PMC10134041 DOI: 10.1038/s41366-022-01251-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/14/2022] [Accepted: 12/19/2022] [Indexed: 01/01/2023]
Abstract
BACKGROUND Obesity is a disease that may involve disrupted connectivity of brain networks. Bariatric surgery is an effective treatment for obesity, and the positive effects on obesity-related conditions may be enhanced by exercise. Herein, we aimed to investigate the possible synergistic effects of Roux-en-Y Gastric Bypass (RYGB) and exercise training on brain functional networks. METHODS Thirty women eligible for bariatric surgery were randomly assigned to a Roux-en-Y gastric bypass (RYGB: n = 15, age = 41.0 ± 7.3 years) or RYGB plus Exercise Training (RYGB + ET: n = 15, age = 41.9 ± 7.2 years). Clinical, laboratory, and brain functional connectivity parameters were assessed at baseline, and 3 (POST3) and 9 months (POST9) after surgery. The 6-month, three-times-a-week, exercise intervention (resistance plus aerobic exercise) was initiated 3 months post-surgery (for RYGB + ET). RESULTS Exercise superimposed on bariatric surgery (RYGB + ET) increased connectivity between hypothalamus and sensorial regions (seed-to-voxel analyses of hypothalamic connectivity), and decreased default mode network (DMN) and posterior salience (pSAL) network connectivity (ROI-to-ROI analyses of brain networks connectivity) when compared to RYGB alone (all p-FDR < 0.05). Increases in basal ganglia (BG) network connectivity were only observed in the exercised training group (within-group analyses). CONCLUSION Exercise training is an important component in the management of post-bariatric patients and may improve the hypothalamic connectivity and brain functional networks that are involved in controlling food intake. TRIAL REGISTRATION Clinicaltrial.gov: NCT02441361.
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Affiliation(s)
- Carlos A A Merege-Filho
- Applied Physiology & Nutrition Research Group; School of Physical Education and Sport; Laboratory of Assessment and Conditioning in Rheumatology; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Saulo S Gil
- Applied Physiology & Nutrition Research Group; School of Physical Education and Sport; Laboratory of Assessment and Conditioning in Rheumatology; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - John P Kirwan
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Igor H Murai
- Applied Physiology & Nutrition Research Group; School of Physical Education and Sport; Laboratory of Assessment and Conditioning in Rheumatology; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Wagner S Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Mariana P Nucci
- Laboratory of Magnetic Resonance Imaging in Neuroradiology (LIM-44), Hospital das Clinicas HCFMUSP, Faculdade de Medicina Universidade de São Paulo, São Paulo, Brazil
| | - Bruno Pastorello
- Laboratory of Magnetic Resonance Imaging in Neuroradiology (LIM-44), Hospital das Clinicas HCFMUSP, Faculdade de Medicina Universidade de São Paulo, São Paulo, Brazil
| | - Alisson Padilha de Lima
- Applied Physiology & Nutrition Research Group; School of Physical Education and Sport; Laboratory of Assessment and Conditioning in Rheumatology; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Paulo R Bazán
- Laboratory of Magnetic Resonance Imaging in Neuroradiology (LIM-44), Hospital das Clinicas HCFMUSP, Faculdade de Medicina Universidade de São Paulo, São Paulo, Brazil
| | - Rosa M R Pereira
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Ana L de Sá-Pinto
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Fernanda R Lima
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Sonia M D Brucki
- Cognitive and Behavioral Neurology Unit, Department of Neurology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Roberto de Cleva
- Gastroenterology Department, Digestive Surgery Division Department of Digestive Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Marco A Santo
- Gastroenterology Department, Digestive Surgery Division Department of Digestive Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Claudia da Costa Leite
- Laboratory of Magnetic Resonance Imaging in Neuroradiology (LIM-44), Hospital das Clinicas HCFMUSP, Faculdade de Medicina Universidade de São Paulo, São Paulo, Brazil
| | - Maria Concepción García Otaduy
- Laboratory of Magnetic Resonance Imaging in Neuroradiology (LIM-44), Hospital das Clinicas HCFMUSP, Faculdade de Medicina Universidade de São Paulo, São Paulo, Brazil
| | - Hamilton Roschel
- Applied Physiology & Nutrition Research Group; School of Physical Education and Sport; Laboratory of Assessment and Conditioning in Rheumatology; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Bruno Gualano
- Applied Physiology & Nutrition Research Group; School of Physical Education and Sport; Laboratory of Assessment and Conditioning in Rheumatology; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil.
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9
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Dantas WS, Zunica ERM, Heintz EC, Vandanmagsar B, Floyd ZE, Yu Y, Fujioka H, Hoppel CL, Belmont KP, Axelrod CL, Kirwan JP. Mitochondrial uncoupling attenuates sarcopenic obesity by enhancing skeletal muscle mitophagy and quality control. J Cachexia Sarcopenia Muscle 2022; 13:1821-1836. [PMID: 35304976 PMCID: PMC9178352 DOI: 10.1002/jcsm.12982] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/28/2022] [Accepted: 02/21/2022] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Sarcopenic obesity is a highly prevalent disease with poor survival and ineffective medical interventions. Mitochondrial dysfunction is purported to be central in the pathogenesis of sarcopenic obesity by impairing both organelle biogenesis and quality control. We have previously identified that a mitochondrial-targeted furazano[3,4-b]pyrazine named BAM15 is orally available and selectively lowers respiratory coupling efficiency and protects against diet-induced obesity in mice. Here, we tested the hypothesis that mitochondrial uncoupling simultaneously attenuates loss of muscle function and weight gain in a mouse model of sarcopenic obesity. METHODS Eighty-week-old male C57BL/6J mice with obesity were randomized to 10 weeks of high fat diet (CTRL) or BAM15 (BAM15; 0.1% w/w in high fat diet) treatment. Body weight and food intake were measured weekly. Body composition, muscle function, energy expenditure, locomotor activity, and glucose tolerance were determined after treatment. Skeletal muscle was harvested and evaluated for histology, gene expression, protein signalling, and mitochondrial structure and function. RESULTS BAM15 decreased body weight (54.0 ± 2.0 vs. 42.3 ± 1.3 g, P < 0.001) which was attributable to increased energy expenditure (10.1 ± 0.1 vs. 11.3 ± 0.4 kcal/day, P < 0.001). BAM15 increased muscle mass (52.7 ± 0.4 vs. 59.4 ± 1.0%, P < 0.001), strength (91.1 ± 1.3 vs. 124.9 ± 1.2 g, P < 0.0001), and locomotor activity (347.0 ± 14.4 vs. 432.7 ± 32.0 m, P < 0.001). Improvements in physical function were mediated in part by reductions in skeletal muscle inflammation (interleukin 6 and gp130, both P < 0.05), enhanced mitochondrial function, and improved endoplasmic reticulum homeostasis. Specifically, BAM15 activated mitochondrial quality control (PINK1-ubiquitin binding and LC3II, P < 0.01), increased mitochondrial activity (citrate synthase and complex II activity, all P < 0.05), restricted endoplasmic reticulum (ER) misfolding (decreased oligomer A11 insoluble/soluble ratio, P < 0.0001) while limiting ER stress (decreased PERK signalling, P < 0.0001), apoptotic signalling (decreased cytochrome C release and Caspase-3/9 activation, all P < 0.001), and muscle protein degradation (decreased 14-kDa actin fragment insoluble/soluble ratio, P < 0.001). CONCLUSIONS Mitochondrial uncoupling by agents such as BAM15 may mitigate age-related decline in muscle mass and function by molecular and cellular bioenergetic adaptations that confer protection against sarcopenic obesity.
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Affiliation(s)
- Wagner S Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Elizabeth R M Zunica
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Elizabeth C Heintz
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Bolormaa Vandanmagsar
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Z Elizabeth Floyd
- Ubiquitin Biology Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Yongmei Yu
- Ubiquitin Biology Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Hisashi Fujioka
- Cryo-Electron Microscopy Core, Case Western Reserve University, Cleveland, OH, USA.,Center for Mitochondrial Diseases, Case Western Reserve University of School of Medicine, Cleveland, OH, USA
| | - Charles L Hoppel
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA.,Center for Mitochondrial Diseases, Case Western Reserve University of School of Medicine, Cleveland, OH, USA.,Department of Pharmacology, Case Western Reserve University, Cleveland, OH, USA
| | - Kathryn P Belmont
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Christopher L Axelrod
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - John P Kirwan
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, USA
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10
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Dantas WS, Zunica ERM, Heintz EC, Hoppel CL, Axelrod CL, Kirwan JP. Mitochondrial Uncoupling Decreases Sarcopenic Obesity By Activation of Skeletal Muscle Mitochondrial Quality Control and Attenuated ER Stress. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.l7532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wagner S. Dantas
- Integrated Physiology and Molecular MetabolismPennington Biomedical Research CenterBaton RougeLA
| | - Elizabeth R. M. Zunica
- Integrated Physiology and Molecular MetabolismPennington Biomedical Research CenterBaton RougeLA
| | - Elizabeth C. Heintz
- Integrated Physiology and Molecular MetabolismPennington Biomedical Research CenterBaton RougeLA
| | - Charles L. Hoppel
- Integrated Physiology and Molecular MetabolismPennington Biomedical Research CenterBaton RougeLA
| | - Christopher L. Axelrod
- Integrated Physiology and Molecular MetabolismPennington Biomedical Research CenterBaton RougeLA
| | - John P. Kirwan
- Integrated Physiology and Molecular MetabolismPennington Biomedical Research CenterBaton RougeLA
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11
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Hoddy KK, Axelrod CL, Mey JT, Hari A, Beyl RA, Blair JB, Dantas WS, Kirwan JP. Insulin resistance persists despite a metabolically healthy obesity phenotype. Obesity (Silver Spring) 2022; 30:39-44. [PMID: 34816598 PMCID: PMC9136885 DOI: 10.1002/oby.23312] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/06/2021] [Accepted: 09/07/2021] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Metabolically healthy obesity (MHO) is often defined as the absence of metabolic syndrome in the presence of obesity. However, phenotypic features of MHO are unclear. Insulin sensitivity in MHO was cross-sectionally compared with metabolically unhealthy obesity (MUO) and a reference group of young healthy participants without obesity. METHODS Sedentary adults (n = 96) undergoing anthropometric, blood chemistries, maximal aerobic capacity, and euglycemic-hyperinsulinemic clamp measurements were classified by BMI (<25 and ≥30 kg/m2 ). MUO was defined as having obesity with metabolic syndrome (≥2 additional risk factors). Data were analyzed using a linear mixed models approach. RESULTS Body weight was similar between MHO and MUO. Body fat (percentage) and high-density lipoprotein cholesterol were higher (p < 0.001), and systolic blood pressure, triglycerides, glucose, and insulin were lower in MHO versus MUO (p < 0.03, all). The MHO group also had lower high-density lipoprotein cholesterol and higher low-density lipoprotein cholesterol, diastolic blood pressure, and insulin compared with the reference. Both the MHO and MUO groups displayed impaired insulin sensitivity compared with the reference control (p < 0.001). CONCLUSIONS Participants with MHO had distinct clinical measures related to hypertension, lipid metabolism, and glycemic control compared with a healthy reference group. Peripheral insulin resistance in obesity independent of metabolic status portends increased risk for type 2 diabetes in the MHO patient population.
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Affiliation(s)
- Kristin K. Hoddy
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Christopher L. Axelrod
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Jacob T. Mey
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Adithya Hari
- Department of Nuclear Medicine, Montefiore Medical Center, Bronx, New York, USA
| | - Robbie A. Beyl
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Jourdan B. Blair
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Wagner S. Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - John P. Kirwan
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
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12
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Pinto AJ, Meireles K, Peçanha T, Mazzolani BC, Smaira FI, Rezende D, Benatti FB, Ribeiro ACM, Pinto ALS, Lima FR, Shinjo SK, Dantas WS, Mellett NA, Meikle PJ, Owen N, Dunstan DW, Roschel H, Gualano B. Acute cardiometabolic effects of brief active breaks in sitting for patients with rheumatoid arthritis. Am J Physiol Endocrinol Metab 2021; 321:E782-E794. [PMID: 34693756 DOI: 10.1152/ajpendo.00259.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Exercise is a treatment in rheumatoid arthritis, but participation in moderate-to-vigorous exercise is challenging for some patients. Light-intensity breaks in sitting could be a promising alternative. We compared the acute effects of active breaks in sitting with those of moderate-to-vigorous exercise on cardiometabolic risk markers in patients with rheumatoid arthritis. In a crossover fashion, 15 women with rheumatoid arthritis underwent three 8-h experimental conditions: prolonged sitting (SIT), 30-min bout of moderate-to-vigorous exercise followed by prolonged sitting (EX), and 3-min bouts of light-intensity walking every 30 min of sitting (BR). Postprandial glucose, insulin, c-peptide, triglycerides, cytokines, lipid classes/subclasses (lipidomics), and blood pressure responses were assessed. Muscle biopsies were collected following each session to assess targeted proteins/genes. Glucose [-28% in area under the curve (AUC), P = 0.036], insulin (-28% in AUC, P = 0.016), and c-peptide (-27% in AUC, P = 0.006) postprandial responses were attenuated in BR versus SIT, whereas only c-peptide was lower in EX versus SIT (-20% in AUC, P = 0.002). IL-1β decreased during BR, but increased during EX and SIT (P = 0.027 and P = 0.085, respectively). IL-1ra was increased during EX versus BR (P = 0.002). TNF-α concentrations decreased during BR versus EX (P = 0.022). EX, but not BR, reduced systolic blood pressure (P = 0.013). Lipidomic analysis showed that 7 of 36 lipid classes/subclasses were significantly different between conditions, with greater changes being observed in EX. No differences were observed for protein/gene expression. Brief active breaks in sitting can offset markers of cardiometabolic disturbance, which may be particularly useful for patients who may find it difficult to adhere to exercise.NEW & NOTEWORTHY Exercise is a treatment in rheumatoid arthritis but is challenging for some patients. Light-intensity breaks in sitting could be a promising alternative. Our findings show beneficial, but differential, cardiometabolic effects of active breaks in sitting and exercise in patients with rheumatoid arthritis. Breaks in sitting mainly improved glycemic and inflammatory markers, whereas exercise improved lipidomic and hypotensive responses. Breaks in sitting show promise in offsetting aspects of cardiometabolic disturbance associated with prolonged sitting in rheumatoid arthritis.
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Affiliation(s)
- Ana J Pinto
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Kamila Meireles
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Tiago Peçanha
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Bruna C Mazzolani
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Fabiana I Smaira
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Diego Rezende
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Fabiana B Benatti
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
- School of Applied Sciences, State University of Campinas, Limeira, Brazil
| | - Ana C M Ribeiro
- Rheumatology Division, School of Medicine FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - Ana L S Pinto
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
- Rheumatology Division, School of Medicine FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - Fernanda R Lima
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
- Rheumatology Division, School of Medicine FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - Samuel K Shinjo
- Rheumatology Division, School of Medicine FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - Wagner S Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana
| | - Natalie A Mellett
- Physical Activity, Behavioural Epidemiology and/or Metabolomics Laboratories, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Peter J Meikle
- Physical Activity, Behavioural Epidemiology and/or Metabolomics Laboratories, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Neville Owen
- Physical Activity, Behavioural Epidemiology and/or Metabolomics Laboratories, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Centre for Urban Transitions, Swinburne University of Technology, Melbourne, Victoria, Australia
| | - David W Dunstan
- Physical Activity, Behavioural Epidemiology and/or Metabolomics Laboratories, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
- Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, Victoria, Australia
| | - Hamilton Roschel
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
- School of Applied Sciences, State University of Campinas, Limeira, Brazil
| | - Bruno Gualano
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
- School of Applied Sciences, State University of Campinas, Limeira, Brazil
- Food Research Center, University of São Paulo, Sao Paulo, Brazil
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13
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Gil S, Kirwan JP, Murai IH, Dantas WS, Merege-Filho CAA, Ghosh S, Shinjo SK, Pereira RMR, Teodoro WR, Felau SM, Benatti FB, de Sá-Pinto AL, Lima F, de Cleva R, Santo MA, Gualano B, Roschel H. A randomized clinical trial on the effects of exercise on muscle remodelling following bariatric surgery. J Cachexia Sarcopenia Muscle 2021; 12:1440-1455. [PMID: 34666419 PMCID: PMC8718087 DOI: 10.1002/jcsm.12815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 07/27/2021] [Accepted: 09/07/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Muscle atrophy and strength loss are common adverse outcomes following bariatric surgery. This randomized, controlled trial investigated the effects of exercise training on bariatric surgery-induced loss of muscle mass and function. Additionally, we investigated the effects of the intervention on molecular and histological mediators of muscle remodelling. METHODS Eighty women with obesity were randomly assigned to a Roux-en-Y gastric bypass (RYGB: n = 40, age = 42 ± 8 years) or RYGB plus exercise training group (RYGB + ET: n = 40, age = 38 ± 7 years). Clinical and laboratory parameters were assessed at baseline, and 3 (POST3) and 9 months (POST9) after surgery. The 6 month, three-times-a-week, exercise intervention (resistance plus aerobic exercise) was initiated 3 months post-surgery (for RYGB + ET). A healthy, lean, age-matched control group was recruited to provide reference values for selected variables. RESULTS Surgery resulted in a similar (P = 0.66) reduction in lower-limb muscle strength in RYGB and RYGB+ET (-26% vs. -31%), which was rescued to baseline values in RYGB + ET (P = 0.21 vs. baseline) but not in RYGB (P < 0.01 vs. baseline). Patients in RYGB+ET had greater absolute (214 vs. 120 kg, P < 0.01) and relative (2.4 vs. 1.4 kg/body mass, P < 0.01) muscle strength compared with RYGB alone at POST9. Exercise resulted in better performance in timed-up-and-go (6.3 vs. 7.1 s, P = 0.05) and timed-stand-test (18 vs. 14 repetitions, P < 0.01) compared with RYGB. Fat-free mass was lower (POST9-PRE) after RYBG than RYGB + ET (total: -7.9 vs. -4.9 kg, P < 0.01; lower-limb: -3.8 vs. -2.7 kg, P = 0.02). Surgery reduced Types I (~ - 21%; P = 0.99 between-group comparison) and II fibre cross-sectional areas (~ - 27%; P = 0.88 between-group comparison), which were rescued to baseline values in RYGB+ET (P > 0.05 vs. baseline) but not RYGB (P > 0.01 vs. baseline). RYGB + ET showed greater Type I (5187 vs. 3898 μm2 , P < 0.01) and Type II (5165 vs. 3565 μm2 , P < 0.01) fCSA than RYGB at POST9. RYGB + ET also resulted in increased capillarization (P < 0.01) and satellite cell content (P < 0.01) than RYGB at POST9. Gene-set normalized enrichment scores for the muscle transcriptome revealed that the ubiquitin-mediated proteolysis pathway was suppressed in RYGB + ET at POST9 vs. PRE (NES: -1.7; P < 0.01), but not in RYGB. Atrogin-1 gene expression was lower in RYGB + ET vs. RYGB at POST9 (0.18 vs. 0.71-fold change, P < 0.01). From both genotypic and phenotypic perspectives, the muscle of exercised patients resembled that of healthy lean individuals. CONCLUSIONS This study provides compelling evidence-from gene to function-that strongly supports the incorporation of exercise into the recovery algorithm for bariatric patients so as to counteract the post-surgical loss of muscle mass and function.
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Affiliation(s)
- Saulo Gil
- Applied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil.,Laboratory of Assessment and Conditioning in Rheumatology, Universidade de São Paulo, São Paulo, SP, Brazil.,Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - John P Kirwan
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Igor H Murai
- Applied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil.,Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Wagner S Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Carlos Alberto Abujabra Merege-Filho
- Applied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil.,Laboratory of Assessment and Conditioning in Rheumatology, Universidade de São Paulo, São Paulo, SP, Brazil.,Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Sujoy Ghosh
- Laboratory of Computational Biology, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA.,Centre for Computational Biology, Duke-NUS Medical School, Singapore
| | - Samuel K Shinjo
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Rosa M R Pereira
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Walcy R Teodoro
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Sheylla M Felau
- Applied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Fabiana B Benatti
- Applied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil.,School of Applied Sciences, Universidade Estadual de Campinas, São Paulo, Brazil
| | - Ana L de Sá-Pinto
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Fernanda Lima
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Roberto de Cleva
- Gastroenterology Department, Digestive Surgery Division Department of Digestive Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Marco Aurélio Santo
- Gastroenterology Department, Digestive Surgery Division Department of Digestive Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Bruno Gualano
- Applied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil.,Laboratory of Assessment and Conditioning in Rheumatology, Universidade de São Paulo, São Paulo, SP, Brazil.,Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Hamilton Roschel
- Applied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil.,Laboratory of Assessment and Conditioning in Rheumatology, Universidade de São Paulo, São Paulo, SP, Brazil.,Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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14
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Zunica ERM, Axelrod CL, Cho E, Spielmann G, Davuluri G, Alexopoulos SJ, Beretta M, Hoehn KL, Dantas WS, Stadler K, King WT, Pergola K, Irving BA, Langohr IM, Yang S, Hoppel CL, Gilmore LA, Kirwan JP. Breast cancer growth and proliferation is suppressed by the mitochondrial targeted furazano[3,4-b]pyrazine BAM15. Cancer Metab 2021; 9:36. [PMID: 34627389 PMCID: PMC8502397 DOI: 10.1186/s40170-021-00274-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 09/22/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Enhanced metabolic plasticity and diversification of energy production is a hallmark of highly proliferative breast cancers. This contributes to poor pharmacotherapy efficacy, recurrence, and metastases. We have previously identified a mitochondrial-targeted furazano[3,4-b]pyrazine named BAM15 that selectively reduces bioenergetic coupling efficiency and is orally available. Here, we evaluated the antineoplastic properties of uncoupling oxidative phosphorylation from ATP production in breast cancer using BAM15. METHODS The anticancer effects of BAM15 were evaluated in human triple-negative MDA-MB-231 and murine luminal B, ERα-negative EO771 cells as well as in an orthotopic allograft model of highly proliferative mammary cancer in mice fed a standard or high fat diet (HFD). Untargeted transcriptomic profiling of MDA-MB-231 cells was conducted after 16-h exposure to BAM15. Additionally, oxidative phosphorylation and electron transfer capacity was determined in permeabilized cells and excised tumor homogenates after treatment with BAM15. RESULTS BAM15 increased proton leak and over time, diminished cell proliferation, migration, and ATP production in both MDA-MB-231 and EO771 cells. Additionally, BAM15 decreased mitochondrial membrane potential, while inducing apoptosis and reactive oxygen species accumulation in MDA-MB-231 and EO771 cells. Untargeted transcriptomic profiling of MDA-MB-231 cells further revealed inhibition of signatures associated with cell survival and energy production by BAM15. In lean mice, BAM15 lowered body weight independent of food intake and slowed tumor progression compared to vehicle-treated controls. In HFD mice, BAM15 reduced tumor growth relative to vehicle and calorie-restricted weight-matched controls mediated in part by impaired cell proliferation, mitochondrial respiratory function, and ATP production. LC-MS/MS profiling of plasma and tissues from BAM15-treated animals revealed distribution of BAM15 in adipose, liver, and tumor tissue with low abundance in skeletal muscle. CONCLUSIONS Collectively, these data indicate that mitochondrial uncoupling may be an effective strategy to limit proliferation of aggressive forms of breast cancer. More broadly, these findings highlight the metabolic vulnerabilities of highly proliferative breast cancers which may be leveraged in overcoming poor responsiveness to existing therapies.
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Affiliation(s)
- Elizabeth R M Zunica
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA.,Department of Nutrition, Case Western Reserve University, Cleveland, OH, 44109, USA.,Clinical Oncology and Metabolism, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Christopher L Axelrod
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA.,Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Eunhan Cho
- School of Kinesiology, Louisiana State University, Baton Rouge, LA, USA
| | | | - Gangarao Davuluri
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA.,Sarcopenia and Malnutrition Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Stephanie J Alexopoulos
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Martina Beretta
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Kyle L Hoehn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Wagner S Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA
| | - Krisztian Stadler
- Department of Oxidative Stress and Disease, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - William T King
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA.,Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Kathryn Pergola
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA.,Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Brian A Irving
- School of Kinesiology, Louisiana State University, Baton Rouge, LA, USA
| | - Ingeborg M Langohr
- Department of Pathobiological Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Shengping Yang
- Department of Biostatistics, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Charles L Hoppel
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA.,Department of Pharmacology, Case Western Reserve University, Cleveland, OH, 44109, USA
| | - L Anne Gilmore
- Clinical Oncology and Metabolism, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA.,Department of Clinical Nutrition, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - John P Kirwan
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, USA. .,Department of Nutrition, Case Western Reserve University, Cleveland, OH, 44109, USA. .,Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA.
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15
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Kirwan JP, Axelrod CL, Kullman EL, Malin SK, Dantas WS, Pergola K, del Rincon JP, Brethauer SA, Kashyap SR, Schauer PR. Foregut Exclusion Enhances Incretin and Insulin Secretion After Roux-en-Y Gastric Bypass in Adults With Type 2 Diabetes. J Clin Endocrinol Metab 2021; 106:e4192-e4201. [PMID: 33870426 PMCID: PMC8475221 DOI: 10.1210/clinem/dgab255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Patients with type 2 diabetes experience resolution of hyperglycemia within days after Roux-en-Y gastric bypass (RYGB) surgery. This is attributed, in part, to enhanced secretion of hindgut factors following exclusion of the gastric remnant and proximal intestine during surgery. However, evidence of the mechanisms of remission remain limited due to the challenges of metabolic evaluation during the early postoperative period. The purpose of this investigation was to determine the role of foregut exclusion in the resolution of type 2 diabetes after RYGB. METHODS Patients with type 2 diabetes (n = 15) undergoing RYGB had a gastrostomy tube (G-tube) placed in their gastric remnant at time of surgery. Patients were randomized to receive a mixed meal tolerance test via oral or G-tube feeding immediately prior to and 2 weeks after surgery in a repeated measures crossover design. Plasma glucose, insulin, C-peptide, incretin responses, and indices of meal-stimulated insulin secretion and sensitivity were determined. RESULTS Body weight, fat mass, fasting glucose and insulin, and circulating lipids were significantly decreased 2 weeks after surgery. The glycemic response to feeding was reduced as a function of total area under the curve but not after adjustment for the reduction in fasting glucose. Oral feeding significantly enhanced insulin and incretin secretion after RYGB, which was entirely ablated by G-tube feeding. CONCLUSION Foregut exclusion accounts for the rise in incretin and insulin secretion but may not fully explain the early improvements in glucose metabolism after RYGB surgery.
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Affiliation(s)
- John P Kirwan
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH,USA
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA,USA
- Bariatric and Metabolic Institute, Pennington Biomedical Research Center, Baton Rouge, LA,USA
- Correspondence: John P. Kirwan, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, 70808, Location: L-4030, USA.
| | - Christopher L Axelrod
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH,USA
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA,USA
- Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, LA,USA
- Bariatric and Metabolic Institute, Pennington Biomedical Research Center, Baton Rouge, LA,USA
| | - Emily L Kullman
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH,USA
| | - Steven K Malin
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH,USA
| | - Wagner S Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA,USA
| | - Kathryn Pergola
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA,USA
- Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, LA,USA
| | - Juan Pablo del Rincon
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH,USA
| | - Stacy A Brethauer
- Bariatric and Metabolic Institute, Cleveland Clinic, Cleveland, Ohio,USA
| | - Sangeeta R Kashyap
- Department of Endocrinology and Metabolism, Cleveland Clinic, Cleveland, Ohio,USA
| | - Philip R Schauer
- Bariatric and Metabolic Institute, Cleveland Clinic, Cleveland, Ohio,USA
- Bariatric and Metabolic Institute, Pennington Biomedical Research Center, Baton Rouge, LA,USA
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16
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King WT, Axelrod CL, Zunica ER, Noland RC, Davuluri G, Fujioka H, Tandler B, Pergola K, Hermann GE, Rogers RC, López-Domènech S, Dantas WS, Stadler K, Hoppel CL, Kirwan JP. Dynamin-related protein 1 regulates substrate oxidation in skeletal muscle by stabilizing cellular and mitochondrial calcium dynamics. J Biol Chem 2021; 297:101196. [PMID: 34529976 PMCID: PMC8498465 DOI: 10.1016/j.jbc.2021.101196] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 01/16/2023] Open
Abstract
Mitochondria undergo continuous cycles of fission and fusion to promote inheritance, regulate quality control, and mitigate organelle stress. More recently, this process of mitochondrial dynamics has been demonstrated to be highly sensitive to nutrient supply, ultimately conferring bioenergetic plasticity to the organelle. However, whether regulators of mitochondrial dynamics play a causative role in nutrient regulation remains unclear. In this study, we generated a cellular loss-of-function model for dynamin-related protein 1 (DRP1), the primary regulator of outer membrane mitochondrial fission. Loss of DRP1 (shDRP1) resulted in extensive ultrastructural and functional remodeling of mitochondria, characterized by pleomorphic enlargement, increased electron density of the matrix, and defective NADH and succinate oxidation. Despite increased mitochondrial size and volume, shDRP1 cells exhibited reduced cellular glucose uptake and mitochondrial fatty acid oxidation. Untargeted transcriptomic profiling revealed severe downregulation of genes required for cellular and mitochondrial calcium homeostasis, which was coupled to loss of ATP-stimulated calcium flux and impaired substrate oxidation stimulated by exogenous calcium. The insights obtained herein suggest that DRP1 regulates substrate oxidation by altering whole-cell and mitochondrial calcium dynamics. These findings are relevant to the targetability of mitochondrial fission and have clinical relevance in the identification of treatments for fission-related pathologies such as hereditary neuropathies, inborn errors in metabolism, cancer, and chronic diseases.
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Affiliation(s)
- William T. King
- Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA,Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Christopher L. Axelrod
- Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA,Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Elizabeth R.M. Zunica
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA,Department of Nutrition, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Robert C. Noland
- Skeletal Muscle Metabolism Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Gangarao Davuluri
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Hisashi Fujioka
- Center for Mitochondrial Diseases, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA,Electron Microscope Facility, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Bernard Tandler
- Center for Mitochondrial Diseases, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA,Department of Biological Sciences, Case Western Reserve University School of Dental Medicine, Cleveland, Ohio, USA
| | - Kathryn Pergola
- Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA,Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Gerlinda E. Hermann
- Department of Autonomic Neuroscience, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Richard C. Rogers
- Department of Autonomic Neuroscience, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Sandra López-Domènech
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA,University Hospital Dr. Peset, Fisabio, Valencia, Spain
| | - Wagner S. Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Krisztian Stadler
- Department of Oxidative Stress and Disease, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Charles L. Hoppel
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA,Center for Mitochondrial Diseases, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA,Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - John P. Kirwan
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA,Department of Nutrition, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA,For correspondence: John P. Kirwan
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17
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Axelrod CL, Fealy CE, Erickson ML, Davuluri G, Fujioka H, Dantas WS, Huang E, Pergola K, Mey JT, King WT, Mulya A, Hsia D, Burguera B, Tandler B, Hoppel CL, Kirwan JP. Lipids activate skeletal muscle mitochondrial fission and quality control networks to induce insulin resistance in humans. Metabolism 2021; 121:154803. [PMID: 34090870 PMCID: PMC8277749 DOI: 10.1016/j.metabol.2021.154803] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/10/2021] [Accepted: 05/31/2021] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND AIMS A diminution in skeletal muscle mitochondrial function due to ectopic lipid accumulation and excess nutrient intake is thought to contribute to insulin resistance and the development of type 2 diabetes. However, the functional integrity of mitochondria in insulin-resistant skeletal muscle remains highly controversial. METHODS 19 healthy adults (age:28.4 ± 1.7 years; BMI:22.7 ± 0.3 kg/m2) received an overnight intravenous infusion of lipid (20% Intralipid) or saline followed by a hyperinsulinemic-euglycemic clamp to assess insulin sensitivity using a randomized crossover design. Skeletal muscle biopsies were obtained after the overnight lipid infusion to evaluate activation of mitochondrial dynamics proteins, ex-vivo mitochondrial membrane potential, ex-vivo oxidative phosphorylation and electron transfer capacity, and mitochondrial ultrastructure. RESULTS Overnight lipid infusion increased dynamin related protein 1 (DRP1) phosphorylation at serine 616 and PTEN-induced kinase 1 (PINK1) expression (P = 0.003 and P = 0.008, respectively) in skeletal muscle while reducing mitochondrial membrane potential (P = 0.042). The lipid infusion also increased mitochondrial-associated lipid droplet formation (P = 0.011), the number of dilated cristae, and the presence of autophagic vesicles without altering mitochondrial number or respiratory capacity. Additionally, lipid infusion suppressed peripheral glucose disposal (P = 0.004) and hepatic insulin sensitivity (P = 0.014). CONCLUSIONS These findings indicate that activation of mitochondrial fission and quality control occur early in the onset of insulin resistance in human skeletal muscle. Targeting mitochondrial dynamics and quality control represents a promising new pharmacological approach for treating insulin resistance and type 2 diabetes. CLINICAL TRIAL REGISTRATION NCT02697201, ClinicalTrials.gov.
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Affiliation(s)
- Christopher L Axelrod
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Ciaran E Fealy
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Melissa L Erickson
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Gangarao Davuluri
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Sarcopenia and Malnutrition Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
| | - Hisashi Fujioka
- Cryo-Electron Microscopy Core, Case Western Reserve University, Cleveland, OH 44109, USA; Center for Mitochondrial Diseases, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Wagner S Dantas
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
| | - Emily Huang
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Kathryn Pergola
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
| | - Jacob T Mey
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - William T King
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Department of Translational Services, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
| | - Anny Mulya
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Daniel Hsia
- Clinical Trials Unit, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
| | - Bartolome Burguera
- Endocrinology and Metabolism Institute, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - Bernard Tandler
- Center for Mitochondrial Diseases, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA; Department of Biological Sciences, Case Western Reserve University School of Dental Medicine, Cleveland, OH 44106, USA
| | - Charles L Hoppel
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Center for Mitochondrial Diseases, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA; Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44109, USA
| | - John P Kirwan
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA; Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA.
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18
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Gil S, Goessler K, Dantas WS, Murai IH, Merege-Filho CAA, Pereira RMR, de Cleva R, Santo MA, Kirwan JP, Roschel H, Gualano B. Constraints of Weight Loss as a Marker of Bariatric Surgery Success: An Exploratory Study. Front Physiol 2021; 12:640191. [PMID: 34177607 PMCID: PMC8232885 DOI: 10.3389/fphys.2021.640191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 05/14/2021] [Indexed: 01/21/2023] Open
Abstract
Purpose The aim of this exploratory study was to investigate whether the degree of weight loss properly reflects improvements in cardiometabolic health among patients who underwent Roux-en-Y gastric bypass. Methods In this ancillary analysis from a clinical trial, patients were clustered into tertiles according to the magnitude of the percentage weight loss (1st tertile: “higher weight loss”: −37.1 ± 5.8%; 2nd tertile: “moderate weight loss”: −29.7 ± 1.4%; 3rd tertile: “lower weight loss”: −24.2 ± 2.3%). Delta changes (9 months after surgery-baseline) in clustered cardiometabolic risk (i.e., blood pressure index, fasting glucose, high-density lipoprotein [HDL] and triglycerides [TG]), glycated hemoglobin (HbA1c), homeostasis model assessment (HOMA-IR), and C-reactive protein (CRP) were calculated. Results A total of 42 patients who had complete bodyweight data (age = 40 ± 8 year; BMI = 47.8 ± 7.1 kg/m2) were included. Surgery led to substantial weight loss (−37.9 ± 11.3 kg, P < 0,001), and clinically significant improvements in blood pressure index (−17.7 ± 8.2 mmHg, P < 0.001), fasting glucose (−36.6 ± 52.5 mg/dL, P < 0.001), HDL (9.4 ± 7.1 mg/dL, P < 0.001), TG (−35.8 ± 44.1 mg/dL P < 0,001), HbA1c (−1.2 ± 1.6%, P < 0.001), HOMA-IR (−4.7 ± 3.9 mg/dL, P < 0.001) and CRP (−8.5 ± 6.7 μg/mL P < 0.001). Comparisons across tertiles revealed no differences for cardiometabolic risk score, fasting glucose, HbAc1, HOMA-IR, blood pressure index, CRP, HDL, and TG (P > 0.05 for all). Individual variable analysis confirmed cardiometabolic improvements across the spectrum on weight-loss. There were no associations between weight loss and any dependent variable. Conclusion Weight loss following bariatric surgery does not correlate with improvements in cardiovascular risk factors. These findings suggest that weight loss alone may be insufficient to assess the cardiometabolic success of bariatric surgery, and the search for alternate proxies that better predict surgery success are needed.
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Affiliation(s)
- Saulo Gil
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, Brazil
| | - Karla Goessler
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, Brazil
| | - Wagner S Dantas
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, Brazil.,Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, United States
| | - Igor Hisashi Murai
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, Brazil
| | - Carlos Alberto Abujabra Merege-Filho
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, Brazil
| | - Rosa Maria R Pereira
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Roberto de Cleva
- Department of Digestive Surgery, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Marco Aurélio Santo
- Department of Digestive Surgery, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - John P Kirwan
- Integrated Physiology and Molecular Medicine Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA, United States
| | - Hamilton Roschel
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, Brazil
| | - Bruno Gualano
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, Brazil
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19
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Dantas WS, Roschel H, Murai IH, Gil S, Davuluri G, Axelrod CL, Ghosh S, Newman SS, Zhang H, Shinjo SK, das Neves W, Merege-Filho C, Teodoro WR, Capelozzi VL, Pereira RM, Benatti FB, de Sá-Pinto AL, de Cleva R, Santo MA, Kirwan JP, Gualano B. Erratum. Exercise-Induced Increases in Insulin Sensitivity After Bariatric Surgery Are Mediated By Muscle Extracellular Matrix Remodeling. Diabetes 2020;69:1675-1691. Diabetes 2021; 70:1415. [PMID: 33975910 PMCID: PMC8275888 DOI: 10.2337/db21-er06b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Zunica ER, Axelrod CL, Davuluri G, Dantas WS, Spielmann G, Cho E, Irving BA, Kirwan JP, Gilmore LA. Abstract 4796: Calorie restriction induces skeletal muscle wasting and a complex I defect while reducing mammary tumor growth in a mouse model of diet induced obesity. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-4796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: Obesity is an independent risk factor for the development, morbidity, and mortality of breast cancer. Calorie restriction (CR) is the first line therapy for obesity management, with growing evidence and application in the treatment of breast cancer. In non-tumor bearing patients, ~20% of weight loss is attributed to reductions in skeletal muscle mass. However, little is known of how CR in a tumorigenic environment may influence muscle function and content.
Methods: Obese C57BL/6J female mice were used to develop an allograft breast cancer model by orthotopically injecting the mammary fat pad with basal-like breast cancer (E0771 cells). Mice were randomized (1:1) by tumor size and body weight to high fat diet (HFD; 60% kcal from fat) or calorie restriction diet (CRD; ~40% restriction of HFD via an incremental reduction in food intake) for 2.5 weeks. Daily food intake, body weight and temperature, as well as twice weekly tumor measurements were obtained during treatment. Organ weights and size were obtained at the time of necropsy. Whole blood was collected for immunophenotyping and assessed via flow cytometry. Mitochondrial function was determined in tumor homogenates and permeabilized gastrocnemius fibers by high resolution respirometry (O2k).
Results: CRD reduced body weight (HFD: 27.8±0.8 vs CRD: 22.9±0.5 g, P=0.0003) and tumor growth (HFD: 3.6±0.2 g vs. CRD: 2.7±0.3 g, P=0.03). There was no difference in the proportions of total NK cells, helper and cytotoxic T-cells between HFD and CRD (P>0.05). Respirometry studies of tumor mitochondria revealed diminished complex I uncoupled rate following CRD (HFD: 3.2±0.4 vs. CRD: 1.6±0.3 pmol/sec/mg, P= 0.02). Additionally, skeletal muscle mitochondria of CRD animals contained a defect in complex I oxidation (HFD: 49.2±6.5 vs. CRD: 28.6±4.0 pmol/sec/mg, P=0.03). Furthermore, soleus muscle mass was reduced (HFD: 7.7±0.8 mg vs. CRD: 4.5±1.1 mg, P=0.04).
Conclusions: This study demonstrates that CRD induces complex I (CI) defects in tumor and skeletal muscle mitochondria. Suppression of CI was associated with a favorable reduction in tumor growth and unfavorable loss of skeletal muscle mass. Future studies formally evaluating skeletal muscle function and cachexia as well as muscle preserving therapies in combination with CR are warranted.
Funding: Research was supported by NIGMS (GM104940 - JPK) and the Pennington Biomedical Research Foundation (LAG)
Citation Format: Elizabeth R. Zunica, Christopher L. Axelrod, Gangarao Davuluri, Wagner S. Dantas, Guillaume Spielmann, Eunhan Cho, Brian A. Irving, John P. Kirwan, L. Anne Gilmore. Calorie restriction induces skeletal muscle wasting and a complex I defect while reducing mammary tumor growth in a mouse model of diet induced obesity [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 4796.
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Affiliation(s)
| | | | | | | | | | - Eunhan Cho
- 2Louisiana State University, Baton Rouge, LA
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21
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Dantas WS, Roschel H, Murai IH, Gil S, Davuluri G, Axelrod CL, Ghosh S, Newman SS, Zhang H, Shinjo SK, das Neves W, Merege-Filho C, Teodoro WR, Capelozzi VL, Pereira RM, Benatti FB, de Sá-Pinto AL, de Cleva R, Santo MA, Kirwan JP, Gualano B. Exercise-Induced Increases in Insulin Sensitivity After Bariatric Surgery Are Mediated By Muscle Extracellular Matrix Remodeling. Diabetes 2020; 69:1675-1691. [PMID: 32409493 PMCID: PMC7372074 DOI: 10.2337/db19-1180] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/08/2020] [Indexed: 02/06/2023]
Abstract
Exercise seems to enhance the beneficial effect of bariatric (Roux-en-Y gastric bypass [RYGB]) surgery on insulin resistance. We hypothesized that skeletal muscle extracellular matrix (ECM) remodeling may underlie these benefits. Women were randomized to either a combined aerobic and resistance exercise training program following RYGB (RYGB + ET) or standard of care (RYGB). Insulin sensitivity was assessed by oral glucose tolerance test. Muscle biopsy specimens were obtained at baseline and 3 and 9 months after surgery and subjected to comprehensive phenotyping, transcriptome profiling, molecular pathway identification, and validation in vitro. Exercise training improved insulin sensitivity beyond surgery alone (e.g., Matsuda index: RYGB 123% vs. RYGB + ET 325%; P ≤ 0.0001). ECM remodeling was reduced by surgery alone, with an additive benefit of surgery and exercise training (e.g., collagen I: RYGB -41% vs. RYGB + ET -76%; P ≤ 0.0001). Exercise and RYGB had an additive effect on enhancing insulin sensitivity, but surgery alone did not resolve insulin resistance and ECM remodeling. We identified candidates modulated by exercise training that may become therapeutic targets for treating insulin resistance, in particular, the transforming growth factor-β1/SMAD 2/3 pathway and its antagonist follistatin. Exercise-induced increases in insulin sensitivity after bariatric surgery are at least partially mediated by muscle ECM remodeling.
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Affiliation(s)
- Wagner S Dantas
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Hamilton Roschel
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Igor H Murai
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Saulo Gil
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Gangarao Davuluri
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Christopher L Axelrod
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
- Department of Translational Services, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Sujoy Ghosh
- Genomics Core, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
- Cardiovascular and Metabolic Disorders Program and Center for Computational Biology, Duke-National University of Singapore Medical School, Singapore
| | - Susan S Newman
- Genomics Core, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Hui Zhang
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Samuel K Shinjo
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Willian das Neves
- Clinical Oncology Service, Instituto do Câncer do Estado de São Paulo, São Paulo, Brazil
| | - Carlos Merege-Filho
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Walcy R Teodoro
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Vera L Capelozzi
- Department of Pathology, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Rosa Maria Pereira
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Fabiana B Benatti
- School of Applied Sciences, Universidade Estadual de Campinas, São Paulo, Brazil
| | - Ana L de Sá-Pinto
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Roberto de Cleva
- Department of Digestive Division, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Marco A Santo
- Department of Digestive Division, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - John P Kirwan
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Bruno Gualano
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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22
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Axelrod CL, King WT, Davuluri G, Noland RC, Hall J, Hull M, Dantas WS, Zunica ERM, Alexopoulos SJ, Hoehn KL, Langohr I, Stadler K, Doyle H, Schmidt E, Nieuwoudt S, Fitzgerald K, Pergola K, Fujioka H, Mey JT, Fealy C, Mulya A, Beyl R, Hoppel CL, Kirwan JP. BAM15-mediated mitochondrial uncoupling protects against obesity and improves glycemic control. EMBO Mol Med 2020; 12:e12088. [PMID: 32519812 PMCID: PMC7338798 DOI: 10.15252/emmm.202012088] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/15/2020] [Accepted: 05/15/2020] [Indexed: 11/09/2022] Open
Abstract
Obesity is a leading cause of preventable death worldwide. Despite this, current strategies for the treatment of obesity remain ineffective at achieving long-term weight control. This is due, in part, to difficulties in identifying tolerable and efficacious small molecules or biologics capable of regulating systemic nutrient homeostasis. Here, we demonstrate that BAM15, a mitochondrially targeted small molecule protonophore, stimulates energy expenditure and glucose and lipid metabolism to protect against diet-induced obesity. Exposure to BAM15 in vitro enhanced mitochondrial respiratory kinetics, improved insulin action, and stimulated nutrient uptake by sustained activation of AMPK. C57BL/6J mice treated with BAM15 were resistant to weight gain. Furthermore, BAM15-treated mice exhibited improved body composition and glycemic control independent of weight loss, effects attributable to drug targeting of lipid-rich tissues. We provide the first phenotypic characterization and demonstration of pre-clinical efficacy for BAM15 as a pharmacological approach for the treatment of obesity and related diseases.
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Affiliation(s)
- Christopher L Axelrod
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
- Department of Translational ServicesPennington Biomedical Research CenterBaton RougeLAUSA
- Department of Inflammation and ImmunityLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - William T King
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
- Department of Translational ServicesPennington Biomedical Research CenterBaton RougeLAUSA
| | - Gangarao Davuluri
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
- Sarcopenia and Malnutrition LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
| | - Robert C Noland
- Skeletal Muscle Metabolism LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
| | - Jacob Hall
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
- Department of Translational ServicesPennington Biomedical Research CenterBaton RougeLAUSA
| | - Michaela Hull
- Department of Inflammation and ImmunityLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Wagner S Dantas
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
| | - Elizabeth RM Zunica
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
- Department of NutritionCase Western Reserve UniversityClevelandOHUSA
| | - Stephanie J Alexopoulos
- School of Biotechnology and Biomolecular SciencesUniversity of New South WalesSydneyNSWAustralia
| | - Kyle L Hoehn
- School of Biotechnology and Biomolecular SciencesUniversity of New South WalesSydneyNSWAustralia
| | - Ingeborg Langohr
- Department of Pathobiological SciencesLouisiana State UniversityBaton RougeLAUSA
| | - Krisztian Stadler
- Oxidative Stress and Disease LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
| | - Haylee Doyle
- Oxidative Stress and Disease LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
| | - Eva Schmidt
- Oxidative Stress and Disease LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
| | - Stephan Nieuwoudt
- Department of Inflammation and ImmunityLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Kelly Fitzgerald
- Department of Inflammation and ImmunityLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Kathryn Pergola
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
- Department of Translational ServicesPennington Biomedical Research CenterBaton RougeLAUSA
| | - Hisashi Fujioka
- Cryo‐Electron Microscopy CoreCase Western Reserve UniversityClevelandOHUSA
| | - Jacob T Mey
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
- Department of Inflammation and ImmunityLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Ciaran Fealy
- Department of Inflammation and ImmunityLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Anny Mulya
- Department of Inflammation and ImmunityLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Robbie Beyl
- Department of BiostatisticsPennington Biomedical Research CenterBaton RougeLAUSA
| | - Charles L Hoppel
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
- Department of PharmacologyCase Western Reserve UniversityClevelandOHUSA
| | - John P Kirwan
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLAUSA
- Department of Inflammation and ImmunityLerner Research InstituteCleveland ClinicClevelandOHUSA
- Department of NutritionCase Western Reserve UniversityClevelandOHUSA
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Gil S, Gualano B, Dantas WS, Murai IH, Ghosh S, Shinjo SK, Merege-Filho C, Teodoro WR, Pereira RM, Benatti FB, de Sá-Pinto AL, Lima F, de Cleva R, Santo MA, Kirwan JP, Roschel H. Exercise Suppresses The Ubiquitin-proteasome System In The Skeletal Muscle Of Obese Women Following Bariatric Surgery. Med Sci Sports Exerc 2020. [DOI: 10.1249/01.mss.0000681292.67357.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nicoletti CF, Cortes-Oliveira C, Noronha NY, Pinhel MAS, Dantas WS, Jácome A, Marchini JS, Gualano B, Crujeiras AB, Nonino CB. DNA methylation pattern changes following a short-term hypocaloric diet in women with obesity. Eur J Clin Nutr 2020; 74:1345-1353. [PMID: 32404903 DOI: 10.1038/s41430-020-0660-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/20/2020] [Accepted: 05/01/2020] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES We aimed to investigate the effects of short-term hypocaloric diet-induced weight loss on DNA methylation profile in leukocytes from women with severe obesity. METHODS Eleven women with morbid obesity (age: 36.9 ± 10.3 years; BMI: 58.5 ± 10.5 kg/m2) were assessed before and after 6 weeks of a hypocaloric dietary intervention. The participants were compared with women of average weight and the same age (age: 36.9 ± 11.8 years; BMI: 22.5 ± 1.6 kg/m2). Genome-wide DNA methylation analysis was performed in DNA extracted from peripheral blood leukocytes using the Infinium Human Methylation 450 BeadChip assay. Changes (Δβ) in the methylation level of each CpGs were calculated. A threshold with a minimum value of 10%, p < 0.001, for the significant CpG sites based on Δβ and a false discovery rate of <0.05 was set. RESULTS Dietary intervention changed the methylation levels at 16,064 CpG sites. These CpGs sites were related to cancer, cell cycle-related, MAPK, Rap1, and Ras signaling pathways. However, regardless of hypocaloric intervention, a group of 878 CpGs (related to 649 genes) remained significantly altered in obese women when compared with normal-weight women. Pathway enrichment analysis identified genes related to the cadherin and Wnt pathway, angiogenesis signaling, and p53 pathways by glucose deprivation. CONCLUSION A short-term hypocaloric intervention in patients with severe obesity partially restored the obesity-related DNA methylation pattern. Thus, the full change of obesity-related DNA methylation patterns could be proportional to the weight-loss rate in these patients after dietary interventions.
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Affiliation(s)
- C F Nicoletti
- Laboratory of Nutrigenomics Studies, Department of Health Science, Ribeirão Preto Medical School, University of Sao Paulo, Ribeirão Preto, Brazil.,Applied Physiology & Nutrition Research Group, School of Physical Educaton and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - C Cortes-Oliveira
- Laboratory of Nutrigenomics Studies, Department of Health Science, Ribeirão Preto Medical School, University of Sao Paulo, Ribeirão Preto, Brazil
| | - N Y Noronha
- Laboratory of Nutrigenomics Studies, Department of Health Science, Ribeirão Preto Medical School, University of Sao Paulo, Ribeirão Preto, Brazil
| | - M A S Pinhel
- Laboratory of Nutrigenomics Studies, Department of Health Science, Ribeirão Preto Medical School, University of Sao Paulo, Ribeirão Preto, Brazil.,Laboratory of Studies in Biochemistry and Molecular Biology, Department of Molecular Biology, São José do Rio Preto Medical School, Sao Paulo, Brazil
| | - W S Dantas
- Applied Physiology & Nutrition Research Group, School of Physical Educaton and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - A Jácome
- Department of Mathematics, MODES group, CITIC, Faculty of Science, Universidade da Coruña, A Coruña, Spain
| | - J S Marchini
- Department of Internal Medicine, Ribeirão Preto Medical School, University of Sao Paulo, Ribeirão Preto, Brazil
| | - B Gualano
- Applied Physiology & Nutrition Research Group, School of Physical Educaton and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - A B Crujeiras
- Epigenomics in Endocrinology and Nutrition, Instituto de Investigación Sanitaria (IDIS), Complejo Hospitalario Universitario de Santiago (CHUS), Santiago de Compostela University (USC), Santiago de Compostela, Spain. .,CIBER Fisiopatología de la Obesidad y la Nutrición (CIBERobn), Madrid, Spain.
| | - C B Nonino
- Laboratory of Nutrigenomics Studies, Department of Health Science, Ribeirão Preto Medical School, University of Sao Paulo, Ribeirão Preto, Brazil.
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25
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Murai IH, Roschel H, Dantas WS, Gil S, Merege-Filho C, de Cleva R, de Sá-Pinto AL, Lima F, Santo MA, Benatti FB, Kirwan JP, Pereira RM, Gualano B. Exercise Mitigates Bone Loss in Women With Severe Obesity After Roux-en-Y Gastric Bypass: A Randomized Controlled Trial. J Clin Endocrinol Metab 2019; 104:4639-4650. [PMID: 31322672 DOI: 10.1210/jc.2019-00074] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 07/15/2019] [Indexed: 11/19/2022]
Abstract
CONTEXT Bone loss after bariatric surgery potentially could be mitigated by exercise. OBJECTIVE To investigate the role of exercise training (ET) in attenuating bariatric surgery-induced bone loss. DESIGN Randomized, controlled trial. SETTING Referral center for bariatric surgery. PATIENTS Seventy women with severe obesity, aged 25 to 55 years, who underwent Roux-en-Y gastric bypass (RYGB). INTERVENTION Supervised, 6-month, ET program after RYGB vs. standard of care (RYGB only). OUTCOMES Areal bone mineral density (aBMD) was the primary outcome. Bone microarchitecture, bone turnover, and biochemical markers were secondary outcomes. RESULTS Surgery significantly decreased femoral neck, total hip, distal radius, and whole body aBMD (P < 0.001); and increased bone turnover markers, including collagen type I C-telopeptide (CTX), procollagen type I N-propeptide (P1NP), sclerostin, and osteopontin (P < 0.05). Compared with RYGB only, exercise mitigated the percent loss of aBMD at femoral neck [estimated mean difference (EMD), -2.91%; P = 0.007;], total hip (EMD, -2.26%; P = 0.009), distal radius (EMD, -1.87%; P = 0.038), and cortical volumetric bone mineral density at distal radius (EMD, -2.09%; P = 0.024). Exercise also attenuated CTX (EMD, -0.20 ng/mL; P = 0.002), P1NP (EMD, -17.59 ng/mL; P = 0.024), and sclerostin levels (EMD, -610 pg/mL; P = 0.046) in comparison with RYGB. Exercise did not affect biochemical markers (e.g., 25(OH)D, calcium, intact PTH, phosphorus, and magnesium). CONCLUSION Exercise mitigated bariatric surgery-induced bone loss, possibly through mechanisms involving suppression in bone turnover and sclerostin. Exercise should be incorporated in postsurgery care to preserve bone mass.
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Affiliation(s)
- Igor H Murai
- Applied Physiology & Nutrition Research Group, Laboratory of Assessment and Conditioning in Rheumatology, School of Physical Education and Sport, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Hamilton Roschel
- Applied Physiology & Nutrition Research Group, Laboratory of Assessment and Conditioning in Rheumatology, School of Physical Education and Sport, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Wagner S Dantas
- Applied Physiology & Nutrition Research Group, Laboratory of Assessment and Conditioning in Rheumatology, School of Physical Education and Sport, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Saulo Gil
- Applied Physiology & Nutrition Research Group, Laboratory of Assessment and Conditioning in Rheumatology, School of Physical Education and Sport, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Carlos Merege-Filho
- Applied Physiology & Nutrition Research Group, Laboratory of Assessment and Conditioning in Rheumatology, School of Physical Education and Sport, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Roberto de Cleva
- Gastroenterology Department, Digestive Surgery Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Ana L de Sá-Pinto
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Fernanda Lima
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Marco A Santo
- Gastroenterology Department, Digestive Surgery Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Fabiana B Benatti
- Applied Physiology & Nutrition Research Group, Laboratory of Assessment and Conditioning in Rheumatology, School of Physical Education and Sport, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
- School of Applied Sciences, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - John P Kirwan
- Integrative Physiology and Molecular Metabolism Group, Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - Rosa M Pereira
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
| | - Bruno Gualano
- Applied Physiology & Nutrition Research Group, Laboratory of Assessment and Conditioning in Rheumatology, School of Physical Education and Sport, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
- Rheumatology Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina FMUSP, University of São Paulo, São Paulo, Brazil
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26
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Dolan E, Saunders B, Dantas WS, Murai IH, Roschel H, Artioli GG, Harris R, Bicudo JEPW, Sale C, Gualano B. A Comparative Study of Hummingbirds and Chickens Provides Mechanistic Insight on the Histidine Containing Dipeptide Role in Skeletal Muscle Metabolism. Sci Rep 2018; 8:14788. [PMID: 30283073 PMCID: PMC6170442 DOI: 10.1038/s41598-018-32636-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 09/12/2018] [Indexed: 12/14/2022] Open
Abstract
Histidine containing dipeptides (HCDs) have numerous ergogenic and therapeutic properties, but their primary role in skeletal muscle remains unclear. Potential functions include pH regulation, protection against reactive oxygen/nitrogen species, or Ca2+ regulation. In recognition of the challenge of isolating physiological processes in-vivo, we employed a comparative physiology approach to investigate the primary mechanism of HCD action in skeletal muscle. We selected two avian species (i.e., hummingbirds and chickens), who represented the extremes of the physiological processes in which HCDs are likely to function. Our findings indicate that HCDs are non-essential to the development of highly oxidative and contractile muscle, given their very low content in hummingbird skeletal tissue. In contrast, their abundance in the glycolytic chicken muscle, indicate that they are important in anaerobic bioenergetics as pH regulators. This evidence provides new insights on the HCD role in skeletal muscle, which could inform widespread interventions, from health to elite performance.
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Affiliation(s)
- E Dolan
- Applied Physiology and Nutrition Research Group, Rheumatology Division; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, University of São Paulo, São Paulo, SP, Brazil
| | - B Saunders
- Applied Physiology and Nutrition Research Group, Rheumatology Division; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, University of São Paulo, São Paulo, SP, Brazil
| | - W S Dantas
- Applied Physiology and Nutrition Research Group, Rheumatology Division; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, University of São Paulo, São Paulo, SP, Brazil
| | - I H Murai
- Applied Physiology and Nutrition Research Group, Rheumatology Division; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, University of São Paulo, São Paulo, SP, Brazil
| | - H Roschel
- Applied Physiology and Nutrition Research Group, Rheumatology Division; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, University of São Paulo, São Paulo, SP, Brazil
| | - G G Artioli
- Applied Physiology and Nutrition Research Group, Rheumatology Division; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, University of São Paulo, São Paulo, SP, Brazil
| | - R Harris
- Junipa Ltd; Newmarket, Suffolk, United Kingdom
| | - J E P W Bicudo
- School of Biological Sciences, University of Wollongong, Wollongong, Australia
| | - C Sale
- Sport, Health and Performance Enhancement Research Centre; Musculoskeletal Physiology Research Group; School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - B Gualano
- Applied Physiology and Nutrition Research Group, Rheumatology Division; Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR, University of São Paulo, São Paulo, SP, Brazil.
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27
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Roschel H, Gil S, Dantas WS, Murai IH, Merege C, Santo FMA, Cleva R, Gualano B. Effects Of Exercise Training On Strength And Functionality In Obese Subjects Undergoing Bariatric Surgery. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000537095.17395.ce] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Benatti FB, Miyake CNH, Dantas WS, Zambelli VO, Shinjo SK, Pereira RMR, Silva MER, Sá-Pinto AL, Borba E, Bonfá E, Gualano B. Exercise Increases Insulin Sensitivity and Skeletal Muscle AMPK Expression in Systemic Lupus Erythematosus: A Randomized Controlled Trial. Front Immunol 2018; 9:906. [PMID: 29755474 PMCID: PMC5934440 DOI: 10.3389/fimmu.2018.00906] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 04/11/2018] [Indexed: 12/12/2022] Open
Abstract
Systemic lupus erythematosus (SLE) patients may show increased insulin resistance (IR) when compared with their healthy peers. Exercise training has been shown to improve insulin sensitivity in other insulin-resistant populations, but it has never been tested in SLE. Therefore, the aim of the present study was to assess the efficacy of a moderate-intensity exercise training program on insulin sensitivity and potential underlying mechanisms in SLE patients with mild/inactive disease. A 12-week, randomized controlled trial was conducted. Nineteen SLE patients were randomly assigned into two groups: trained (SLE-TR, n = 9) and non-trained (SLE-NT, n = 10). Before and after 12 weeks of the exercise training program, patients underwent a meal test (MT), from which surrogates of insulin sensitivity and beta-cell function were determined. Muscle biopsies were performed after the MT for the assessment of total and membrane GLUT4 and proteins related to insulin signaling [Akt and AMP-activated protein kinase (AMPK)]. SLE-TR showed, when compared with SLE-NT, significant decreases in fasting insulin [−39 vs. +14%, p = 0.009, effect size (ES) = −1.0] and in the insulin response to MT (−23 vs. +21%, p = 0.007, ES = −1.1), homeostasis model assessment IR (−30 vs. +15%, p = 0.005, ES = −1.1), a tendency toward decreased proinsulin response to MT (−19 vs. +6%, p = 0.07, ES = −0.9) and increased glucagon response to MT (+3 vs. −3%, p = 0.09, ES = 0.6), and significant increases in the Matsuda index (+66 vs. −31%, p = 0.004, ES = 0.9) and fasting glucagon (+4 vs. −8%, p = 0.03, ES = 0.7). No significant differences between SLT-TR and SLT-NT were observed in fasting glucose, glucose response to MT, and insulinogenic index (all p > 0.05). SLE-TR showed a significant increase in AMPK Thr 172 phosphorylation when compared to SLE-NT (+73 vs. −12%, p = 0.014, ES = 1.3), whereas no significant differences between groups were observed in Akt Ser 473 phosphorylation, total and membrane GLUT4 expression, and GLUT4 translocation (all p > 0.05). In conclusion, a 12-week moderate-intensity aerobic exercise training program improved insulin sensitivity in SLE patients with mild/inactive disease. This effect appears to be partially mediated by the increased insulin-stimulated skeletal muscle AMPK phosphorylation.
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Affiliation(s)
- Fabiana B Benatti
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil.,School of Applied Sciences, Universidade Estadual de Campinas (UNICAMP), Limeira, Sao Paulo, Brazil
| | - Cíntia N H Miyake
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Wagner S Dantas
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | | | - Samuel K Shinjo
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Rosa M R Pereira
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Maria Elizabeth R Silva
- Endocrinology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Ana Lúcia Sá-Pinto
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Eduardo Borba
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Eloisa Bonfá
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Bruno Gualano
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
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29
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Miyake CNH, Gualano B, Dantas WS, Pereira RT, Neves W, Zambelli VO, Shinjo SK, Pereira RM, Silva ER, Sá-Pinto AL, Borba E, Roschel H, Bonfá E, Benatti FB. Increased Insulin Resistance and Glucagon Levels in Mild/Inactive Systemic Lupus Erythematosus Patients Despite Normal Glucose Tolerance. Arthritis Care Res (Hoboken) 2017; 70:114-124. [DOI: 10.1002/acr.23237] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 03/14/2017] [Indexed: 01/17/2023]
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30
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Yance VRV, Marcondes JAM, Rocha MP, Barcellos CRG, Dantas WS, Avila AFA, Baroni RH, Carvalho FM, Hayashida SAY, Mendonca BB, Domenice S. Discriminating between virilizing ovary tumors and ovary hyperthecosis in postmenopausal women: clinical data, hormonal profiles and image studies. Eur J Endocrinol 2017; 177:93-102. [PMID: 28432270 DOI: 10.1530/eje-17-0111] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/31/2017] [Accepted: 04/21/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND The presence of virilizing signs associated with high serum androgen levels in postmenopausal women is rare. Virilizing ovarian tumors (VOTs) and ovarian stromal hyperthecosis (OH) are the most common etiologies in virilized postmenopausal women. The differential diagnosis between these two conditions is often difficult. OBJECTIVE To evaluate the contribution of clinical features, hormonal profiles and radiological studies to the differential diagnosis of VOT and OH. DESIGN A retrospective study. SETTING A tertiary center. MAIN OUTCOME MEASURES Clinical data, hormonal status (T, E2, LH and FSH), pelvic images (transvaginal sonography and MRI) and anatomopathology were reviewed. PATIENTS Thirty-four postmenopausal women with a diagnosis of VOT (13 women) and OH (21 women) were evaluated retrospectively. RESULTS Clinical signs of hyperandrogenism were more prevalent in the VOT group than the OH group. Although the VOT group showed higher T and E2 levels and lower gonadotropin levels than the OH group, a great overlap occurred among the hormone levels. A pelvic MRI provided an accurate differentiation of these two conditions. CONCLUSION In this group of patients, the main features contributing to the differential diagnosis of VOT and OH were serum levels of testosterone and gonadotropins and the presence of an ovarian nodule identified on the MRI. Although the association of clinical, hormonal and radiological features contributes to the differential diagnosis of these two conditions, histopathological analysis remains the gold standard for the diagnosis of ovarian hyperandrogenism in postmenopausal women.
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Affiliation(s)
- V R V Yance
- Unidade de Endocrinologia do DesenvolvimentoLaboratório de Hormônios e Genética Molecular LIM42, Disciplina de Endocrinologia
| | - J A M Marcondes
- Unidade de Endocrinologia do DesenvolvimentoLaboratório de Hormônios e Genética Molecular LIM42, Disciplina de Endocrinologia
| | - M P Rocha
- Unidade de Endocrinologia do DesenvolvimentoLaboratório de Hormônios e Genética Molecular LIM42, Disciplina de Endocrinologia
| | - C R G Barcellos
- Unidade de Endocrinologia do DesenvolvimentoLaboratório de Hormônios e Genética Molecular LIM42, Disciplina de Endocrinologia
| | - W S Dantas
- Unidade de Endocrinologia do DesenvolvimentoLaboratório de Hormônios e Genética Molecular LIM42, Disciplina de Endocrinologia
| | - A F A Avila
- Instituto de Radiologia do Hospital das Clínicas
| | - R H Baroni
- Instituto de Radiologia do Hospital das Clínicas
| | | | - S A Y Hayashida
- Departamento de Ginecologia do Hospital das Clínicas da Faculdade de Medicina da Universidade de São PauloSP, Brasil
| | - B B Mendonca
- Unidade de Endocrinologia do DesenvolvimentoLaboratório de Hormônios e Genética Molecular LIM42, Disciplina de Endocrinologia
| | - S Domenice
- Unidade de Endocrinologia do DesenvolvimentoLaboratório de Hormônios e Genética Molecular LIM42, Disciplina de Endocrinologia
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Murai IH, Roschel H, Pabis LVS, Takayama L, de Oliveira RB, Dos Santos Pereira RT, Dantas WS, Pereira RMR, Jorgetti V, Ballester RY, Gualano B. Exercise training, creatine supplementation, and bone health in ovariectomized rats. Osteoporos Int 2015; 26:1395-404. [PMID: 25586761 DOI: 10.1007/s00198-014-3017-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 12/19/2014] [Indexed: 10/24/2022]
Abstract
UNLABELLED Evidence suggests that creatine may have some beneficial effects on bone. The study aimed to investigate the effects of exercise alone or combined with creatine on bone health in ovariectomized rats. Findings show that exercise, but not creatine, has an important role in improving bone health. INTRODUCTION The aim of this study was to investigate the effects of exercise training alone or combined with creatine supplementation on bone health parameters in ovariectomized rats. METHODS Wistar rats were randomly allocated into one of five groups: (i) sham-operated, (ii) ovariectomized non-trained placebo-supplemented, (iii) ovariectomized non-trained creatine-supplemented, (iv) ovariectomized exercise-trained placebo-supplemented, and (v) ovariectomized exercise-trained creatine-supplemented. Downhill running training and/or creatine supplementation (300 mg/kg body weight) were administered for 12 weeks. Bone mineral content (BMC), bone mineral density (BMD), and biomechanical and histomorphometric parameters were assessed. RESULTS No interaction effects were observed for BMC and BMD at whole body, femur, and lumbar spine (p > 0.05). Importantly, a main effect of training was detected for whole body BMC and BMD (p = 0.003 and p < 0.001, respectively), femoral BMC and BMD (p = 0.005 and p < 0.001, respectively), and lumbar spine BMC and BMD (p < 0.001 and p < 0.001, respectively), suggesting that the trained animals had higher bone mass, irrespective of creatine supplementation. Main effects of training were also observed for maximal load (p < 0.001), stiffness (p < 0.001), and toughness (p = 0.046), indicating beneficial effects of exercise training on bone strength. Neither a main effect of supplementation nor an interaction effect was detected for biomechanical parameters (p > 0.05). No main or interaction effects were observed for any of the histomorphometric parameters evaluated (p > 0.05). CONCLUSIONS Exercise training, but not creatine supplementation, attenuated ovariectomy-induced bone loss in this rat model.
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Affiliation(s)
- I H Murai
- School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
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