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Jun L, Knight E, Broderick TL, Al-Nakkash L, Tobin B, Geetha T, Babu JR. Moderate-Intensity Exercise Enhances Mitochondrial Biogenesis Markers in the Skeletal Muscle of a Mouse Model Affected by Diet-Induced Obesity. Nutrients 2024; 16:1836. [PMID: 38931191 PMCID: PMC11206830 DOI: 10.3390/nu16121836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/24/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Skeletal muscle is composed of bundles of muscle fibers with distinctive characteristics. Oxidative muscle fiber types contain higher mitochondrial content, relying primarily on oxidative phosphorylation for ATP generation. Notably, as a result of obesity, or following prolonged exposure to a high-fat diet, skeletal muscle undergoes a shift in fiber type toward a glycolytic type. Mitochondria are highly dynamic organelles, constantly undergoing mitochondrial biogenesis and dynamic processes. Our study aims to explore the impact of obesity on skeletal muscle mitochondrial biogenesis and dynamics and also ascertain whether the skeletal muscle fiber type shift occurs from the aberrant mitochondrial machinery. Furthermore, we investigated the impact of exercise in preserving the oxidative muscle fiber types despite obesity. Mice were subjected to a normal standard chow and water or high-fat diet with sugar water (HFS) with or without exercise training. After 12 weeks of treatment, the HFS diet resulted in a noteworthy reduction in the markers of mitochondrial content, which was recovered by exercise training. Furthermore, higher mitochondrial biogenesis markers were observed in the exercised group with a subsequent increase in the mitochondrial fission marker. In conclusion, these findings imply a beneficial impact of moderate-intensity exercise on the preservation of oxidative capacity in the muscle of obese mouse models.
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Affiliation(s)
- Lauren Jun
- Department of Nutritional Sciences, Auburn University, Auburn, AL 36849, USA; (L.J.)
| | - Emily Knight
- Department of Nutritional Sciences, Auburn University, Auburn, AL 36849, USA; (L.J.)
| | - Tom L. Broderick
- Department of Physiology, College of Graduate Studies, Midwestern University, Glendale, AZ 85308, USA
| | - Layla Al-Nakkash
- Department of Physiology, College of Graduate Studies, Midwestern University, Glendale, AZ 85308, USA
| | - Brielle Tobin
- The Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ 85308, USA
| | - Thangiah Geetha
- Department of Nutritional Sciences, Auburn University, Auburn, AL 36849, USA; (L.J.)
- Boshell Metabolic Diseases and Diabetes Program, Auburn University, Auburn, AL 36849, USA
| | - Jeganathan Ramesh Babu
- Department of Nutritional Sciences, Auburn University, Auburn, AL 36849, USA; (L.J.)
- Boshell Metabolic Diseases and Diabetes Program, Auburn University, Auburn, AL 36849, USA
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Fernandes MS, Pedroza AA, de Andrade Silva SC, de Lemos MDT, Bernardo EM, Pereira AR, Dos Santos TM, Lagranha C. Undernutrition during development modulates endoplasmic reticulum stress genes in the hippocampus of juvenile rats: Involvement of oxidative stress. Brain Res 2022; 1797:148098. [PMID: 36162496 DOI: 10.1016/j.brainres.2022.148098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 08/24/2022] [Accepted: 09/20/2022] [Indexed: 11/26/2022]
Abstract
To evaluate whether exercise training mitigates the deleterious effects of undernutrition during the developmental period in juvenile Wistar rats. Pregnant Wistar rats were fed with a diet containing 17 % or 8 % casein during pregnancy and lactation. At 30 days of life, male offspring were divided into 4 groups: Low-Protein non-trained (LS), Low-Protein Trained (LT), Normoprotein non-trained (NS), and Normoprotein Trained (NT). Trained rats performed aerobic exercise training (AET) for 4 weeks, 5 days a week, 1 h a day. 24 h from the last day of training, the animals were sacrificed. The tissues were removed to analyze indicators of mitochondrial metabolism, oxidative stress, and gene expression of GRP78, PERK, ATF6 ER stress markers, and BDNF. The results showed that undernutrition during development promotes deleterious effects on mitochondrial oxidative metabolism and induces reticulum stress in the hippocampus of juvenile rats. On the other hand, AET improves mitochondrial function and increases enzymatic and non-enzymatic antioxidant capacity, as well as declines ER stress. AET at moderate intensity for 4 weeks in male juvenile Wistar rats acts as a lifestyle intervention opposing the negative effects induced by a protein-restricted maternal diet.
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Affiliation(s)
- Matheus Santos Fernandes
- Graduate Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil; Physical Education and Sport Department, Federal University of Pernambuco, Recife, PE, Brazil
| | - Anderson Apolônio Pedroza
- Graduate Program in Biochemistry and Physiology, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Severina Cássia de Andrade Silva
- Graduate Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Maria Daniele Teixeira de Lemos
- Graduate Program in Biochemistry and Physiology, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Elenilson M Bernardo
- Graduate Program in Biochemistry and Physiology, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Allifer R Pereira
- Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Tony Meireles Dos Santos
- Graduate Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco, Recife, PE, Brazil; Physical Education and Sport Department, Federal University of Pernambuco, Recife, PE, Brazil
| | - Claudia Lagranha
- Graduate Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco, Recife, PE, Brazil; Graduate Program in Biochemistry and Physiology, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil.
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de Carvalho CD, Valentim RR, Navegantes LCC, Papoti M. Comparison between low, moderate, and high intensity aerobic training with equalized loads on biomarkers and performance in rats. Sci Rep 2022; 12:18047. [PMID: 36302946 PMCID: PMC9610360 DOI: 10.1038/s41598-022-22958-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 10/21/2022] [Indexed: 01/24/2023] Open
Abstract
This study investigated the physiological and molecular responses of Wistar Hannover rats, submitted to three 5-week chronic training models, with similar training loads. Twenty-four Wistar Hanover rats were randomly divided into four groups: control (n = 6), low-intensity training (Z1; n = 6), moderate-intensity training (Z2; n = 6) and high-intensity training (Z3; n = 6). The three exercise groups performed a 5-week running training three times a week, with the same prescribed workload but the intensity and the volume were different between groups. An increase in maximal speed was observed after four weeks of training for the three groups that trained, with no difference between groups. Higher rest glycogen was also observed in the soleus muscle after training for the exercise groups compared to the control group. We also found that the Z2 group had a higher protein content of total and phosphorylated GSK3-β compared to the control group after five weeks of training. In conclusion, the present study shows that five weeks of treadmill training based on intensity zones 1, 2, and 3 improved performance and increased resting glycogen in the soleus muscle, therefore intensity modulation does not change the training program adaptation since the different program loads are equalized.
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Affiliation(s)
- Carlos Dellavechia de Carvalho
- Ribeirão Preto Medical School, Department of Orthopedics and Anesthesiology, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, Monte Alegre, 3900, Brazil.
| | - Rafael Rossi Valentim
- Ribeirão Preto Medical School, Department of Physiology, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, Monte Alegre, 3900, Brazil
| | - Luiz Carlos Carvalho Navegantes
- Ribeirão Preto Medical School, Department of Physiology, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, Monte Alegre, 3900, Brazil
| | - Marcelo Papoti
- Ribeirão Preto Medical School, Department of Orthopedics and Anesthesiology, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, Monte Alegre, 3900, Brazil
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Avenida Bandeirantes, Ribeirão Preto, Monte Alegre, São Paulo, 3900, Brazil
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Kraemer MB, Silva KC, Kraemer CCF, Pereira JS, dos Reis IGM, Priolli DG, Messias LHD. Validity of the peak velocity to detect physical training improvements in athymic mice. Front Physiol 2022; 13:943498. [PMID: 36091383 PMCID: PMC9451039 DOI: 10.3389/fphys.2022.943498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/22/2022] [Indexed: 11/18/2022] Open
Abstract
This study comprises two complementary experiments with athymic Balb/c (Nu/Nu) mice. In experiment 1, the aim was to verify the reproducibility of the peak velocity (VPeak) determined from the incremental test. The second experiment aimed to assess the VPeak sensitivity to prescribe and detect modulations of the physical training in athymic nude mice. Sixteen mice were submitted to two incremental treadmill tests separated by 48-h (Experiment 1). The test consisted of an initial warm-up of 5 minutes. Subsequently, animals initiated the tests at 8 m min−1 with increments of 2 m min−1 every 3 minutes. The VPeak was determined as the highest velocity attained during the protocol. In experiment 2, these animals were randomly allocated to an exercise group (EG) or a control group (CG). The training protocol consisted of 30-min of treadmill running at 70% of the VPeak five times a week for 4 weeks. High indexes of reproducibility were obtained for VPeak (Test = 19.7 ± 3.6 m min−1; Retest = 19.2 ± 3.4 m min−1; p = 0.171; effect size = 0.142; r = 0.90). Animals from the EG had a significant increase of VPeak (Before = 18.4 ± 2.7 m min−1; After = 24.2 ± 6.0 m min−1; p = 0.023). Conversely, a significant decrease was observed for the CG (Before = 21.1 ± 3.9 m min−1; After = 15.9 ± 2.7 m min−1; p = 0.038). The VPeak is a valid parameter for exercise prescription in studies involving athymic nude mice.
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Affiliation(s)
- Maurício Beitia Kraemer
- Research Group on Technology Applied to Exercise Physiology (GTAFE), Laboratory of Multidisciplinary Research, São Francisco University, Bragança Paulista, Brazil
| | - Karen Christine Silva
- Research Group on Technology Applied to Exercise Physiology (GTAFE), Laboratory of Multidisciplinary Research, São Francisco University, Bragança Paulista, Brazil
| | - Camila Cunha França Kraemer
- Research Group on Technology Applied to Exercise Physiology (GTAFE), Laboratory of Multidisciplinary Research, São Francisco University, Bragança Paulista, Brazil
| | - Juliana Silva Pereira
- Research Group on Technology Applied to Exercise Physiology (GTAFE), Laboratory of Multidisciplinary Research, São Francisco University, Bragança Paulista, Brazil
| | - Ivan Gustavo Masseli dos Reis
- Research Group on Technology Applied to Exercise Physiology (GTAFE), Laboratory of Multidisciplinary Research, São Francisco University, Bragança Paulista, Brazil
| | - Denise Gonçalves Priolli
- Coloproctology Service of the Federal University of São Paulo, São Paulo and Faculty of Health Sciences Pitágoras de Codó, São Paulo, Brazil
| | - Leonardo Henrique Dalcheco Messias
- Research Group on Technology Applied to Exercise Physiology (GTAFE), Laboratory of Multidisciplinary Research, São Francisco University, Bragança Paulista, Brazil
- *Correspondence: Leonardo Henrique Dalcheco Messias,
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Effect of acute swimming exercise at different intensities but equal total load over metabolic and molecular responses in swimming rats. J Muscle Res Cell Motil 2022; 43:35-44. [PMID: 35084659 DOI: 10.1007/s10974-022-09614-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 01/10/2022] [Indexed: 01/08/2023]
Abstract
Acute metabolic and molecular response to exercise may vary according to exercise's intensity and duration. However, there is a lack regarding specific tissue alterations after acute exercise with aerobic or anaerobic predominance. The present study investigated the effects of acute exercise performed at different intensities, but with equal total load on molecular and physiological responses in swimming rats. Sixty male rats were divided into a control group and five groups performing an acute bout of swimming exercise at different intensities (80, 90, 100, 110 and 120% of anaerobic threshold [AnT]). The exercise duration of each group was balanced so all groups performed at the same total load. Gene expression (HIF-1α, PGC-1α, MCT1 and MCT4 mRNA), blood biomarkers and tissue glycogen depletion were analyzed after the exercise session. ANOVA One-Way was used to indicate statistical mean differences considering 5% significance level. Blood lactate concentration was the only biomarker sensitive to acute exercise, with a significant increase in rats exercised above AnT intensities (p < 0.000). Glycogen stores of gluteus muscle were significantly reduced in all exercised animals in comparison to control group (p = 0.02). Hepatic tissue presented significant reduction in glycogen in animals exercised above AnT (p = 0.000, as well as reduced HIF-1α mRNA and increased MCT1 mRNA, especially at the highest intensity (p = 0.002). Physiological parameters did not alter amongst groups for most tissues. Our results indicate the hepatic tissue alterations (glycogen stores and gene expressions) in response to different exercise intensities of exercise, even with the total load matched.
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