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Mota GAF, Gatto M, Pagan LU, Tanni SE, Okoshi MP. Diabetes Mellitus, Physical Exercise and Heart Rate Variability. Arq Bras Cardiol 2023; 120:e20220902. [PMID: 36790310 PMCID: PMC10389116 DOI: 10.36660/abc.20220902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Gustavo Augusto Ferreira Mota
- Departamento de Clínica MédicaFaculdade de Medicina de BotucatuUniversidade Estadual PaulistaBotucatuSPBrasilDepartamento de Clínica Médica – Faculdade de Medicina de Botucatu – Universidade Estadual Paulista (UNESP), Botucatu, SP – Brasil
| | - Mariana Gatto
- Departamento de Clínica MédicaFaculdade de Medicina de BotucatuUniversidade Estadual PaulistaBotucatuSPBrasilDepartamento de Clínica Médica – Faculdade de Medicina de Botucatu – Universidade Estadual Paulista (UNESP), Botucatu, SP – Brasil
| | - Luana Urbano Pagan
- Departamento de Clínica MédicaFaculdade de Medicina de BotucatuUniversidade Estadual PaulistaBotucatuSPBrasilDepartamento de Clínica Médica – Faculdade de Medicina de Botucatu – Universidade Estadual Paulista (UNESP), Botucatu, SP – Brasil
| | - Suzana Erico Tanni
- Departamento de Clínica MédicaFaculdade de Medicina de BotucatuUniversidade Estadual PaulistaBotucatuSPBrasilDepartamento de Clínica Médica – Faculdade de Medicina de Botucatu – Universidade Estadual Paulista (UNESP), Botucatu, SP – Brasil
| | - Marina Politi Okoshi
- Departamento de Clínica MédicaFaculdade de Medicina de BotucatuUniversidade Estadual PaulistaBotucatuSPBrasilDepartamento de Clínica Médica – Faculdade de Medicina de Botucatu – Universidade Estadual Paulista (UNESP), Botucatu, SP – Brasil
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2
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de Souza EG, Peixoto JVC, Rank C, Petterle RR, Fogaça RTH, Wolska BM, Dias FAL. Effects of High-Intensity Interval Training and Continuous Training on Exercise Capacity, Heart Rate Variability and Isolated Hearts in Diabetic Rats. Arq Bras Cardiol 2022; 120:e20220396. [PMID: 36629606 PMCID: PMC9833297 DOI: 10.36660/abc.20220396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 09/21/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND High-intensity interval training (HIIT) has been suggested as an alternative for continuous training (CT) in people with diabetes mellitus (DM) due to its short duration and potential to improve adherence to exercise. However, data on its impact on heart rate variability (HRV) are scarce. OBJECTIVES To assess and compare the effects of HIIT and CT on exercise capacity, HRV and isolated hearts in diabetic rats. METHODS DM (intravenous streptozotocin, 45 mg.kg -1 ) and control (C) animals performed 20 sessions (5 days/week, 50 min, for 4 weeks) of CT on a treadmill (70% of maximal exercise capacity) or HIIT (cycles of 1:1min at 50% and 90% of maximal exercise capacity). HRV was assessed by continuous electrocardiogram, and cardiac function assessed in isolated perfused hearts. For data analysis, we used the framework of the multivariate covariance generalized linear model or one-way ANOVA followed by Tukey's test, considering p<0.05 as significant. RESULTS Higher exercise capacity (m/min) was achieved in HIIT (DM-HIIT: 36.5 [IQR 30.0-41.3]; C-HIIT: 41.5 [37.8-44.5], both n=10) compared to CT (DM-CT: 29.0 [23.8-33.0]; C-CT: 32.0 [29.5-37.0], both n=10) (p<0.001). Heart rate (bpm) was lower in DM compared to controls (p<0.001) both in vivo (DM-HIIT:348±51, C-HIIT:441±66, DM-CT:361±70, C-CT:437±38) and in isolated hearts. There were no differences in HRV between the groups. Maximum and minimal dP/dt were reduced in DM, except +dP/dt in DM-HIIT vs. C-HIIT (mean difference: 595.5±250.3, p=0.190). CONCLUSION Short-term HIIT promotes greater improvement in exercise performance compared to CT, including in DM, without causing significant changes in HRV.
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Affiliation(s)
- Eduardo Gomes de Souza
- Universidade Federal do ParanáDepartamento de FisiologiaCuritibaPRBrasil Universidade Federal do Paraná – Departamento de Fisiologia , Curitiba , PR – Brasil
| | - João Victor Capelli Peixoto
- Universidade Federal do ParanáDepartamento de FisiologiaCuritibaPRBrasil Universidade Federal do Paraná – Departamento de Fisiologia , Curitiba , PR – Brasil
| | - Claucio Rank
- Universidade Federal do ParanáDepartamento de FisiologiaCuritibaPRBrasil Universidade Federal do Paraná – Departamento de Fisiologia , Curitiba , PR – Brasil
| | - Ricardo Rasmussen Petterle
- Universidade Federal do ParanáDepartamento de Medicina IntegradaCuritibaPRBrasil Universidade Federal do Paraná – Departamento de Medicina Integrada , Curitiba , PR – Brasil
| | - Rosalvo Tadeu Hochmuller Fogaça
- Universidade Federal do ParanáDepartamento de FisiologiaCuritibaPRBrasil Universidade Federal do Paraná – Departamento de Fisiologia , Curitiba , PR – Brasil
| | - Beata Maria Wolska
- University of Illinois at ChicagoChicagoIllinoisEUA University of Illinois at Chicago – Medicine, Physiology and Biophysics, Chicago , Illinois – EUA
| | - Fernando Augusto Lavezzo Dias
- Universidade Federal do ParanáDepartamento de FisiologiaCuritibaPRBrasil Universidade Federal do Paraná – Departamento de Fisiologia , Curitiba , PR – Brasil
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Podvigina TT, Yarushkina NI, Filaretova LP. Effects of Running on the Development of Diabetes and Diabetes-Induced Complications. J EVOL BIOCHEM PHYS+ 2022. [DOI: 10.1134/s0022093022010161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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4
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Bencsik P, Gömöri K, Szabados T, Sántha P, Helyes Z, Jancsó G, Ferdinandy P, Görbe A. Myocardial ischaemia reperfusion injury and cardioprotection in the presence of sensory neuropathy: Therapeutic options. Br J Pharmacol 2020; 177:5336-5356. [PMID: 32059259 PMCID: PMC7680004 DOI: 10.1111/bph.15021] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 01/29/2020] [Accepted: 01/29/2020] [Indexed: 12/12/2022] Open
Abstract
During the last decades, mortality from acute myocardial infarction has been dramatically reduced. However, the incidence of post‐infarction heart failure is still increasing. Cardioprotection by ischaemic conditioning had been discovered more than three decades ago. Its clinical translation, however, is still an unmet need. This is mainly due to the disrupted cardioprotective signalling pathways in the presence of different cardiovascular risk factors, co‐morbidities and the medication being taken. Sensory neuropathy is one of the co‐morbidities that has been shown to interfere with cardioprotection. In the present review, we summarize the diverse aetiology of sensory neuropathies and the mechanisms by which these neuropathies may interfere with ischaemic heart disease and cardioprotective signalling. Finally, we suggest future therapeutic options targeting both ischaemic heart and sensory neuropathy simultaneously. LINKED ARTICLES This article is part of a themed issue on Risk factors, comorbidities, and comedications in cardioprotection. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v177.23/issuetoc
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Affiliation(s)
- Péter Bencsik
- Cardiovascular Research Group, Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Szeged, Szeged, Hungary.,Pharmahungary Group, Szeged, Hungary
| | - Kamilla Gömöri
- Cardiovascular Research Group, Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Szeged, Szeged, Hungary.,Pharmahungary Group, Szeged, Hungary
| | - Tamara Szabados
- Cardiovascular Research Group, Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Szeged, Szeged, Hungary.,Pharmahungary Group, Szeged, Hungary
| | - Péter Sántha
- Department of Physiology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary.,Molecular Pharmacology Research Group, Centre for Neuroscience, János Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Gábor Jancsó
- Department of Physiology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Péter Ferdinandy
- Pharmahungary Group, Szeged, Hungary.,Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Anikó Görbe
- Cardiovascular Research Group, Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Szeged, Szeged, Hungary.,Pharmahungary Group, Szeged, Hungary.,Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
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5
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Zilliox LA, Russell JW. Physical activity and dietary interventions in diabetic neuropathy: a systematic review. Clin Auton Res 2019; 29:443-455. [PMID: 31076938 PMCID: PMC6697618 DOI: 10.1007/s10286-019-00607-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 04/09/2019] [Indexed: 12/27/2022]
Abstract
PURPOSE Diabetic neuropathy is a common and disabling disorder, and there are currently no proven effective disease-modifying treatments. Physical activity and dietary interventions in patients with diabetes and diabetic neuropathy have multiple beneficial effects and are generally low risk, which makes lifestyle interventions an attractive treatment option. We reviewed the literature on the effects of physical activity and dietary interventions on length-dependent peripheral neuropathy and cardiac autonomic neuropathy in diabetes. METHODS The electronic database PubMed was systematically searched for original human and mouse model studies examining the effect of either dietary or physical activity interventions in subjects with diabetes, prediabetes, or metabolic syndrome. RESULTS Twenty studies are included in this review. Fourteen studies were human studies and six were in mice. Studies were generally small with few controlled trials, and there are no widely agreed upon outcome measures. CONCLUSIONS Recent research indicates that dietary interventions are effective in modifying diabetic neuropathy in animal models, and there are promising data that they may also ameliorate diabetic neuropathy in humans. It has been known for some time that lifestyle interventions can prevent the development of diabetic neuropathy in type 2 diabetes mellitus subjects. However, there is emerging evidence that lifestyle interventions are effective in individuals with established diabetic neuropathy. In addition to the observed clinical value of lifestyle interventions, there is emerging evidence of effects on biochemical pathways that improve muscle function and affect other organ systems, including the peripheral nerve. However, data from randomized controlled trials are needed.
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Affiliation(s)
- Lindsay A Zilliox
- Department of Neurology, School of Medicine, University of Maryland, 3S-129, 110 South Paca Street, Baltimore, MD, 21201-1595, USA
- Maryland VA Healthcare System, Baltimore, MD, USA
| | - James W Russell
- Department of Neurology, School of Medicine, University of Maryland, 3S-129, 110 South Paca Street, Baltimore, MD, 21201-1595, USA.
- Maryland VA Healthcare System, Baltimore, MD, USA.
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6
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Yaribeygi H, Butler AE, Sahebkar A. Aerobic exercise can modulate the underlying mechanisms involved in the development of diabetic complications. J Cell Physiol 2019; 234:12508-12515. [PMID: 30623433 DOI: 10.1002/jcp.28110] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 12/07/2018] [Indexed: 12/20/2022]
Abstract
Diabetes mellitus is a highly prevalent metabolic disorder that affects many molecular pathways, causing a shift from a physiologic to a pathophysiologic state. Alterations in the molecular pathways promote diabetic complications and, thus, many medical and nonmedical therapies have been directed at preventing these complications. Despite the beneficial effects on moderating glycemic control, medical therapies may also have unfavorable side effects. This makes nonmedical therapeutic approaches more attractive due to lower pharmacological side effects of these strategies compared to medical agents. Aerobic exercise is now considered as a major nonmedical strategy that can promote beneficial and protective effects to counteract the development of diabetic complications via attenuation of the major molecular mechanisms involved in diabetes.
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Affiliation(s)
- Habib Yaribeygi
- Chronic Kidney Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alexandra E Butler
- Diabetes Research Center, Qatar Biomedical Research Institute, Doha, Qatar
| | - Amirhossein Sahebkar
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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7
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McDonald MW, Dotzert MS, Jiang M, Murray MR, Noble EG, James Melling CW. Exercise Training Induced Cardioprotection with Moderate Hyperglycemia versus Sedentary Intensive Glycemic Control in Type 1 Diabetic Rats. J Diabetes Res 2018; 2018:8485624. [PMID: 30116746 PMCID: PMC6079594 DOI: 10.1155/2018/8485624] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/16/2018] [Indexed: 01/20/2023] Open
Abstract
Intensive insulin therapy (IIT; 4-7 mmol/L) is the preferred treatment for type 1 diabetes mellitus (T1DM) patients to reduce the risk of cardiovascular disease (CVD). However, this treatment strategy has been questioned as it is accompanied with a sedentary lifestyle leading to weight gain and insulin resistance. T1DM patients who partake in high-intensity aerobic training (AThigh) to reduce CVD often utilize conventional insulin therapy (CIT; 9-15 mmol/L) to offset the risk of hypoglycemia. Moreover, exercise modalities incorporating resistance training (RT) have been shown to further reduce this risk. The purpose of this investigation was twofold: (1) to determine if CIT paired with AThigh results in larger cardioprotection from an ischemia-reperfusion (I-R) injury than IIT and (2) to establish if the integration of RT with AThigh (ART) results in similar cardioprotection as AThigh. Diabetic (D) male Sprague-Dawley rats were divided into D-IIT (n = 12), D-CIT (n = 12), D-AThigh (n = 8), D-RT (n = 8), and D-ART (n = 8). T1DM was induced with streptozotocin, and blood glucose was adjusted with insulin. D-AThigh occurred on a treadmill (27 m/min; 1 hr), D-RT performed weighted ladder climbs, and D-ART alternated daily between AThigh and RT. Exercise occurred 5 days/wk for 12 wks. This investigation demonstrates that cardioprotection following an I-R injury was similar between D-AThigh and D-IIT. This cardioprotection is not exercise-specific, and each provides unique advantages. D-AThigh leads to improved glycemia while insulin sensitivity was enhanced following resistance exercises. Thus, exercise is an effective means to elicit cardioprotection in T1DM. However, in addition to glycemia, other factors should be considered when tailoring an exercise program for T1DM patients.
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Affiliation(s)
- Matthew W. McDonald
- Exercise Biochemistry Laboratory, School of Kinesiology, Western University, London, ON, Canada
| | - Michelle S. Dotzert
- Exercise Biochemistry Laboratory, School of Kinesiology, Western University, London, ON, Canada
| | - Mao Jiang
- Exercise Biochemistry Laboratory, School of Kinesiology, Western University, London, ON, Canada
| | - Michael R. Murray
- Exercise Biochemistry Laboratory, School of Kinesiology, Western University, London, ON, Canada
| | - Earl G. Noble
- Exercise Biochemistry Laboratory, School of Kinesiology, Western University, London, ON, Canada
- Lawson Health Research Institute, London, ON, Canada
| | - C. W. James Melling
- Exercise Biochemistry Laboratory, School of Kinesiology, Western University, London, ON, Canada
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8
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Wang M, Li S, Wang F, Zou J, Zhang Y. Aerobic exercise regulates blood lipid and insulin resistance via the toll‑like receptor 4‑mediated extracellular signal‑regulated kinases/AMP‑activated protein kinases signaling pathway. Mol Med Rep 2018; 17:8339-8348. [PMID: 29658605 DOI: 10.3892/mmr.2018.8863] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 08/09/2017] [Indexed: 11/06/2022] Open
Abstract
Diabetes mellitus is a complicated metabolic disease with symptoms of hyperglycemia, insulin resistance, chronic damage and dysfunction of tissues, and metabolic syndrome for insufficient insulin production. Evidence has indicated that exercise treatments are essential in the progression of type‑ІІ diabetes mellitus, and affect insulin resistance and activity of islet β‑cells. In the present study, the efficacy and signaling mechanism of aerobic exercise on blood lipids and insulin resistance were investigated in the progression of type‑ІІ diabetes mellitus. Body weight, glucose metabolism and insulin serum levels were investigated in mouse models of type‑ІІ diabetes mellitus following experienced aerobic exercise. Expression levels of inflammatory factors, interleukin (IL)‑6, high‑sensitivity C‑reactive protein, tumor necrosis factor‑α and leucocyte differentiation antigens, soluble CD40 ligand in the serum were analyzed in the experimental mice. In addition, expression levels of toll‑like receptor 4 (TLR‑4) were analyzed in the liver cells of experimental mice. Changes of oxidative stress indicators, including reactive oxygen species, superoxide dismutase, glutathione and catalase were examined in the liver cells of experimental mice treated by aerobic exercise. Expression levels and activity of extracellular signal‑regulated kinases (ERK) and AMP‑activated protein kinase (AMPK) signaling pathways were investigated in the liver cells of mouse models of type‑ІІ diabetes mellitus after undergoing aerobic exercise. Aerobic exercise decreased the expression levels of inflammatory factors in the serum of mouse models of type‑ІІ diabetes mellitus. The results indicated that aerobic exercise downregulated oxidative stress indicators in liver cells from mouse models of type‑ІІ diabetes mellitus. In addition, the ERK and AMPK signaling pathways were inactivated by aerobic exercise in liver cells in mouse models of type‑ІІ diabetes mellitus. The activity of ERK and AMPK, and the function of islet β‑cells were observed to be improved in experimental mice treated with aerobic exercise. Furthermore, blood lipid metabolism and insulin resistance were improved by treatment with aerobic exercise. Body weight and glucose concentration of serology was markedly improved in mouse models of type‑ІІ diabetes mellitus. Furthermore, TLR‑4 inhibition markedly promoted ERK and AMPK expression levels and activity. Thus, these results indicate that aerobic exercise may improve blood lipid metabolism, insulin resistance and glucose plasma concentration in mouse models of type‑ІІ diabetes mellitus. Thus indicating aerobic exercise is beneficial for improvement of blood lipid and insulin resistance via the TLR‑4‑mediated ERK/AMPK signaling pathway in the progression of type‑ІІ diabetes mellitus.
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Affiliation(s)
- Mei Wang
- State General Administration of Sports, Sports Science Institute, Mass Sports Research Center, Beijing 100061, P.R. China
| | - Sen Li
- Jiangsu Institute of Sports Science, Nanjing, Jiangsu 210033, P.R. China
| | - Fubaihui Wang
- State General Administration of Sports, Sports Science Institute, Mass Sports Research Center, Beijing 100061, P.R. China
| | - Jinhui Zou
- Guangxi Institute of Sports Science Mass Sports Research, Nanning, Guangxi 210014, P.R. China
| | - Yanfeng Zhang
- State General Administration of Sports, Sports Science Institute, Mass Sports Research Center, Beijing 100061, P.R. China
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9
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Kawanishi N, Takagi K, Lee HC, Nakano D, Okuno T, Yokomizo T, Machida S. Endurance exercise training and high-fat diet differentially affect composition of diacylglycerol molecular species in rat skeletal muscle. Am J Physiol Regul Integr Comp Physiol 2018; 314:R892-R901. [PMID: 29443549 PMCID: PMC6032301 DOI: 10.1152/ajpregu.00371.2017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Insulin resistance of peripheral muscle is implicated in the etiology of metabolic syndrome in obesity. Although accumulation of glycerolipids, such as triacylglycerol and diacylglycerol (DAG), in muscle contributes to insulin resistance in obese individuals, endurance-trained athletes also have higher glycerolipid levels but normal insulin sensitivity. We hypothesized that the difference in insulin sensitivity of skeletal muscle between athletes and obese individuals stems from changes in fatty acid composition of accumulated lipids. Here, we evaluated the effects of intense endurance exercise and high-fat diet (HFD) on the accumulation and composition of lipid molecular species in rat skeletal muscle using a lipidomic approach. Sprague-Dawley female rats were randomly assigned to three groups and received either normal diet (ND) in sedentary conditions, ND plus endurance exercise training, or HFD in sedentary conditions. Rats were fed ND or HFD between 4 and 12 wk of age. Rats in the exercise group ran on a treadmill for 120 min/day, 5 days/wk, for 8 wk. Soleus muscle lipidomic profiles were obtained using liquid chromatography/tandem mass spectrometry. Total DAG levels, particularly those of palmitoleate-containing species, were increased in muscle by exercise training. However, whereas the total DAG level in the muscle was also increased by HFD, the levels of DAG molecular species containing palmitoleate were decreased by HFD. The concentration of phosphatidylethanolamine molecular species containing palmitoleate was increased by exercise but decreased by HFD. Our results indicate that although DAG accumulation was similar levels in trained and sedentary obese rats, specific changes in molecular species containing palmitoleate were opposite.
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Affiliation(s)
- Noriaki Kawanishi
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan.,Research Fellow of the Japan Society for the Promotion of Sciences , Tokyo , Japan.,Institute of Health and Sports Science and Medicine, Juntendo University, Inzai, Japan.,Faculty of Advanced Engineering, Chiba Institute of Technology, Narashino, Chiba, Japan
| | - Kana Takagi
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Hyeon-Cheol Lee
- Department of Biochemistry, Graduate School of Medicine, Juntendo University , Tokyo , Japan
| | - Daiki Nakano
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Toshiaki Okuno
- Department of Biochemistry, Graduate School of Medicine, Juntendo University , Tokyo , Japan
| | - Takehiko Yokomizo
- Department of Biochemistry, Graduate School of Medicine, Juntendo University , Tokyo , Japan
| | - Shuichi Machida
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
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10
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Rebai R, Jasmin L, Boudah A. The antidepressant effect of melatonin and fluoxetine in diabetic rats is associated with a reduction of the oxidative stress in the prefrontal and hippocampal cortices. Brain Res Bull 2017; 134:142-150. [PMID: 28746841 DOI: 10.1016/j.brainresbull.2017.07.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/10/2017] [Accepted: 07/19/2017] [Indexed: 12/16/2022]
Abstract
In the past few years possible mechanisms that link diabetes and depression have been found. One of these mechanisms is the increase in lipid peroxidation and decrease in antioxidant activity in the hippocampal and prefrontal cortices, which are brain areas involved in mood. The goal of the present study was to evaluate the effect of an antidepressant and of an antioxidant on behavior and oxidative activity in brains of diabetic rats. Rats rendered diabetic after a treatment with streptozotocin (STZ) (60mg/kg) were treated with fluoxetine (15mg/kg), melatonin (10mg/kg), or vehicle for 4 weeks. All animals were tested for signs of depression and anxiety using the elevated plus maze (EPM), open field test (OFT) and the forced swim test (FST). Four groups were compared: (1) normoglycemic, (2) hyperglycemic vehicle treated, and hyperglycemic (3) fluoxetine or (4) melatonin treated rats. On the last day of the study, blood samples were obtained to determine the levels of hemoglobin A1c (HbA1c). Also, brain samples were collected to measure the oxidative stress in the hippocampal and prefrontal cortices using the thiobarbituric acid reactive substances (TBARS) assay. The activity of the antioxidant enzymes catalase (CAT), glutathione peroxidase (GPx), and glutathione S-transferase (GST) were also measured on the brain samples. The results show that both fluoxetine and melatonin decrease the signs of depression and anxiety in all tests. Concomitantly, the levels of HbA1c were reduced in drug treated rats, and to a greater degree in the fluoxetine group. In the cerebral cortex of diabetic rats, TBARS was increased, while the activity of CAT, GPx and GST were decreased. Fluoxetine and melatonin treatments decreased TBARS in both cortices. In the prefrontal cortex, fluoxetine and melatonin restored the activity of CAT, while only melatonin improved the activity of GPx and GST. In the hippocampus, the activity of GPx alone was restored by melatonin, while fluoxetine had no effect. These results suggest that antidepressants and antioxidants can counter the mood and oxidative disorders associated with diabetes. While these effects could result from a decreased production of reactive oxygen species (ROS) remains to be established.
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Affiliation(s)
- Redouane Rebai
- Department of Biochemistry & Molecular and Cellular Biology, Faculty of Natural and Life Sciences, University of Mentouri Brothers, Constantine BP, 325 Road of Ain El Bey, 25017 Constantine, Algeria.
| | - Luc Jasmin
- Department of Oral and Maxillofacial Surgery, University of California, 521 Parnassus Ave, Campus Box 0440, San Francisco, CA 94143, USA.
| | - Abdennacer Boudah
- National Higher School of Biotechnology, Ville universitaire Ali Mendjeli, BP E66 25100 Constantine, Algeria.
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11
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Hazell TJ, Olver TD, Kowalchuk H, McDonald MW, Dey A, Grisé KN, Noble EG, Melling CWJ, Lavery P, Weiler HA. Aerobic Endurance Training Does Not Protect Bone Against Poorly Controlled Type 1 Diabetes in Young Adult Rats. Calcif Tissue Int 2017; 100:374-381. [PMID: 28110443 DOI: 10.1007/s00223-016-0227-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 12/20/2016] [Indexed: 02/06/2023]
Abstract
Streptozotocin (STZ)-induced type 1 diabetes mellitus (T1DM) decreases trabecular bone volume and bone strength in rodents. The current study investigated the potential protective effects of aerobic endurance training (AET) on bone in STZ-induced T1DM young adult rats. Sixty-four 8-week-old male Sprague-Dawley rats were randomly divided into 4 groups of 16: control non-T1DM sedentary (CS) and exercised (CX), T1DM sedentary (DS) and exercised (DX). Blood glucose was maintained at 9-15 mmol/L using subcutaneously implanted insulin pellets (Linplant, Linshin Canada, Inc.). AET was performed at ~75-85% VO2max for 1 h/day, 5 day/week for 10 weeks. Areal and volumetric bone mineral density (aBMD and vBMD; excised femur) were measured using dual-energy X-ray absorptiometry (DXA; QDR 4500A) and micro computed tomography (μCT; Aloka). Bone strength was tested using a 3-point bending test (Instron 5544 Load Frame). Two-way ANOVA was used to test for T1DM and exercise differences followed by Tukey's HSD tests for interaction effects; significance was set at P < 0.05. T1DM had lower body weight (18.0%), aBMD (8.6%), cortical vBMD (1.6%), trabecular vBMD (2.1%), maximum load at break (22.2%), and increased elastic modulus (11.3%) vs. control (P < 0.001). Exercise in T1DM further decreased body weight (4.7%) vs. sedentary (P = 0.043) and maximum extension during the bending test that demonstrated DX was increased (7.3%) vs. CX (P = 0.033). There were no other beneficial effects of exercise on bone. These results suggest that 10 weeks of AET in rats do not have protective effects on bone in the short term and that T1DM rats have compromised bone health.
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Affiliation(s)
- Tom J Hazell
- Department of Kinesiology and Physical Education, Faculty Science, Wilfrid Laurier University, Waterloo, ON, N2L 3C5, Canada.
| | - T Dylan Olver
- School of Kinesiology, Faculty of Health Sciences, Western University, London, ON, N6G 1AH, Canada
| | - Hana Kowalchuk
- School of Kinesiology, Faculty of Health Sciences, Western University, London, ON, N6G 1AH, Canada
| | - Matthew W McDonald
- School of Kinesiology, Faculty of Health Sciences, Western University, London, ON, N6G 1AH, Canada
| | - Adwitia Dey
- School of Kinesiology, Faculty of Health Sciences, Western University, London, ON, N6G 1AH, Canada
| | - Kenneth N Grisé
- School of Kinesiology, Faculty of Health Sciences, Western University, London, ON, N6G 1AH, Canada
| | - Earl G Noble
- School of Kinesiology, Faculty of Health Sciences, Western University, London, ON, N6G 1AH, Canada
| | - C W James Melling
- School of Kinesiology, Faculty of Health Sciences, Western University, London, ON, N6G 1AH, Canada
| | - Paula Lavery
- School of Dietetics and Human Nutrition, Faculty of Agricultural and Environmental Sciences, McGill University, Ste-Anne-de-Bellevue, QC, H9X 2E3, Canada
| | - Hope A Weiler
- School of Dietetics and Human Nutrition, Faculty of Agricultural and Environmental Sciences, McGill University, Ste-Anne-de-Bellevue, QC, H9X 2E3, Canada
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