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Berbert-Gomes C, Ramos JS, Silveira-Rodrigues JG, Leite DMM, Melo BP, Soares DD. An acute bout of resistance exercise increases BDNF in hippocampus and restores the long-term memory of insulin-resistant rats. Exp Brain Res 2024; 242:901-912. [PMID: 38453752 DOI: 10.1007/s00221-024-06795-x] [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: 09/16/2023] [Accepted: 01/24/2024] [Indexed: 03/09/2024]
Abstract
A sedentary lifestyle, inadequate diet, and obesity are substantial risk factors for Type 2 diabetes mellitus (T2DM) development. A major picture of T2DM is insulin resistance (IR), which causes many impairments in brain physiology, such as increased proinflammatory state and decreased brain-derived neurotrophic factor (BDNF) concentration, hence reducing cognitive function. Physical exercise is a non-pharmacological tool for managing T2DM/IR and its complications. Thus, this study investigated the effects of IR induction and the acute effects of resistance exercise (RE) on memory, neurotrophic, and inflammatory responses in the hippocampus and prefrontal cortex of insulin-resistant rats. IR was induced by a high-fat diet and fructose-rich beverage. Insulin-resistant rats performed acute resistance exercise (IR.RE; vertical ladder climb at 50-100% of the maximum load) or rest (IR.REST; 20 min). Cognitive parameters were assessed by novel object recognition (NOR) tasks, and biochemical analyses were performed to assess BDNF concentrations and inflammatory profile in the hippocampus and prefrontal cortex. Insulin-resistant rats had 20% worse long-term memory (LTM) (p < 0.01) and lower BDNF concentration in the hippocampus (-14.6%; p < 0.05) when compared to non-insulin-resistant rats (CON). An acute bout of RE restored LTM (-9.7% pre vs. post; p > 0.05) and increased BDNF concentration in the hippocampus (9.1%; p < 0.05) of insulin-resistant rats compared to REST. Thus, an acute bout of RE can attenuate the adverse effects of IR on memory and neurotrophic factors in rats, representing a therapeutic tool to alleviate the IR impact on the brain.
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Affiliation(s)
- Camila Berbert-Gomes
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais (Universidade Federal de Minas Gerais -UFMG), Belo Horizonte, MG, 31270‑901, Brazil
| | - Júlia S Ramos
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais (Universidade Federal de Minas Gerais -UFMG), Belo Horizonte, MG, 31270‑901, Brazil
| | - João G Silveira-Rodrigues
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais (Universidade Federal de Minas Gerais -UFMG), Belo Horizonte, MG, 31270‑901, Brazil
| | - Daniel M M Leite
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais (Universidade Federal de Minas Gerais -UFMG), Belo Horizonte, MG, 31270‑901, Brazil
| | - Bruno P Melo
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais (Universidade Federal de Minas Gerais -UFMG), Belo Horizonte, MG, 31270‑901, Brazil
| | - Danusa D Soares
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais (Universidade Federal de Minas Gerais -UFMG), Belo Horizonte, MG, 31270‑901, Brazil.
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Resistance training prevents dynamics and mitochondrial respiratory dysfunction in vastus lateralis muscle of ovariectomized rats. Exp Gerontol 2023; 173:112081. [PMID: 36608776 DOI: 10.1016/j.exger.2023.112081] [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: 08/08/2022] [Accepted: 01/02/2023] [Indexed: 01/05/2023]
Abstract
To investigate whether ovariectomy affects mitochondrial respiratory function, gene expression of the biogenesis markers and mitochondrial dynamics of the vastus lateralis muscle, female Wistar rats divided into ovariectomized (OVX) and intact (INT) groups were kept sedentary (SED) or submitted to resistance training (RT) performed for thirteen weeks on a vertical ladder in which animals climbed with a workload apparatus. RT sessions were performed with four climbs with 65, 85, 95, and 100 % of the rat's previous maximum workload. Mitochondrial Respiratory Function data were obtained by High-resolution respirometry. Gene expression of FIS1, MFN1 and PGC1-α was evaluated by real-time PCR. There was a decrease on oxidative phosphorylation capacity in OVX-SED compared to other groups. Trained groups presented increase on oxidative phosphorylation capacity when compared to sedentary groups. For respiratory control ratio (RCR), OVX-SED presented lower values when compared to INT-SED and to trained groups. Trained groups presented RCR values higher compared to INT-SED. Exercise increased the values of FIS1, MFN1 and PGC1-α expression compared to OVX-SED. Our results demonstrated that in the absence of ovarian hormones, there is a great decrease in oxidative phosphorylation and electron transfer system capacities of sedentary animals. RT was able to increase the expression of genes related to mitochondrial dynamics markers, reversing the condition determined by ovariectomy.
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Carroll CC, Patel SH, Simmons J, Gordon BD, Olson JF, Chemelewski K, Saw S, Hale TM, Howden R, Sabbaghi A. The Impact of Genistein Supplementation on Tendon Functional Properties and Gene Expression in Estrogen-Deficient Rats. J Med Food 2020; 23:1266-1274. [PMID: 32345111 DOI: 10.1089/jmf.2019.0293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Tendinopathy risk increases with menopause. The phytoestrogen genistein prevents collagen loss during estrogen deficiency (ovariectomy [OVX]). The influence of genistein on tendon function and extracellular matrix (ECM) regulation is not well known. We determined the impact of genistein on tendon function and the expression of several genes important for the regulation of tendon ECM. Eight-week-old rats (n = 42) were divided into three groups: intact, OVX, or OVX-genistein (6 mg/kg/day) for 6 weeks. Tail fascicles were assessed with a Deben tensile stage. Achilles tendon mRNA expression was determined with digital droplet polymerase chain reaction. Compared to intact, fascicle stress tended to be lower in untreated OVX rats (P = .022). Furthermore, fascicle modulus and energy density were greater in genistein-treated rats (P < .05) compared to intact. Neither OVX nor genistein altered expression of Col1a1, Col3a1, Casp3, Casp8, Mmp1a, Mmp2, or Mmp9 (P > .05). Compared to intact, Tnmd and Esr1 expression were greater and Pcna and Timp1 expression were lower in OVX rats (P < .05). Genistein treatment returned Tnmd, Pcna, and Timp1 to levels of intact-vehicle (P < .05), but did not alter Scx or Esr1 (P > .05). Several β-catenin/Wnt signaling-related molecules were not altered by OVX or genistein (P > .05). Our findings demonstrate that genistein improves tendon function in estrogen-deficient rats. The effect of genistein in vivo was predominately on genes related to cell proliferation rather than collagen remodeling.
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Affiliation(s)
- Chad C Carroll
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana, USA.,Department of Physiology, Midwestern University, Glendale, Arizona, USA
| | - Shivam H Patel
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana, USA
| | - Jessica Simmons
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana, USA
| | - Ben Dh Gordon
- Laboratory of Systems Physiology, Department of Kinesiology, University of North Carolina at Charlotte, Charlotte, North Carolina, USA
| | - Jay F Olson
- Department of Physiology, Midwestern University, Glendale, Arizona, USA
| | - Kali Chemelewski
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana, USA
| | - Shannon Saw
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana, USA
| | - Taben M Hale
- Department of Basic Medical Sciences, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA
| | - Reuben Howden
- Laboratory of Systems Physiology, Department of Kinesiology, University of North Carolina at Charlotte, Charlotte, North Carolina, USA
| | - Arman Sabbaghi
- Department of Statistics, Purdue University, West Lafayette, Indiana, USA
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Souza MV, Lino ADS, Ruffoni LGD, Domingos MM, Barbosa MR, Rodrigues MFC, Ferreira FC, Tomaz LM, Canevazzi GHR, Silva NS, Teixeira JAA, Leite RD, Shiguemoto GE, Perez SEA. Resistance training and hormone replacement increase MMP-2 activity, quality and quantity of bone in ovariectomized rats. MOTRIZ: REVISTA DE EDUCACAO FISICA 2017. [DOI: 10.1590/s1980-6574201700040003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
| | | | | | - Mateus M. Domingos
- Universidade Federal de São Carlos, UFSCar, Brazil; Centro Universitário das Faculdades Associadas de Ensino, Brazil
| | - Marina R. Barbosa
- Universidade Federal de São Carlos, UFSCar, Brazil; Universidade Federal do Sergipe, Brazil
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Huisman ES, Andersson G, Scott A, Reno CR, Hart DA, Thornton GM. Regional molecular and cellular differences in the female rabbit Achilles tendon complex: potential implications for understanding responses to loading. J Anat 2014; 224:538-47. [PMID: 24571598 DOI: 10.1111/joa.12169] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2014] [Indexed: 11/27/2022] Open
Abstract
The aim of this study was: (i) to analyze the morphology and expression of extracellular matrix genes in six different regions of the Achilles tendon complex of intact normal rabbits; and (ii) to assess the effect of ovariohysterectomy (OVH) on the regional expression of these genes. Female New Zealand White rabbits were separated into two groups: (i) intact normal rabbits (n = 4); and (ii) OVH rabbits (n = 8). For each rabbit, the Achilles tendon complex was dissected into six regions: distal gastrocnemius (DG); distal flexor digitorum superficialis; proximal lateral gastrocnemius (PLG); proximal medial gastrocnemius; proximal flexor digitorum superficialis; and paratenon. For each of the regions, hematoxylin and eosin staining was performed for histological evaluation of intact normal rabbit tissues and mRNA levels for proteoglycans, collagens and genes associated with collagen regulation were assessed by real-time reverse transcription-quantitative polymerase chain reaction for both the intact normal and OVH rabbit tissues. The distal regions displayed a more fibrocartilaginous phenotype. For intact normal rabbits, aggrecan mRNA expression was higher in the distal regions of the Achilles tendon complex compared with the proximal regions. Collagen Type I and matrix metalloproteinase-2 expression levels were increased in the PLG compared to the DG in the intact normal rabbit tissues. The tendons from OVH rabbits had lower gene expressions for the proteoglycans aggrecan, biglycan, decorin and versican compared with the intact normal rabbits, although the regional differences of increased aggrecan expression in distal regions compared with proximal regions persisted. The tensile and compressive forces experienced in the examined regions may be related to the regional differences found in gene expression. The lower mRNA expression of the genes examined in the OVH group confirms a potential effect of systemic estrogen on tendon.
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Affiliation(s)
- Elise S Huisman
- Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada; Centre for Hip Health and Mobility, Vancouver, BC, Canada
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Souza MVC, Leite RD, Souza Lino ADD, Marqueti RDC, Bernardes CF, Araújo HSSD, Bouskela E, Shiguemoto GE, Andrade Perez SED, Kraemer-Aguiar LG. Resistance training improves body composition and increases matrix metalloproteinase 2 activity in biceps and gastrocnemius muscles of diet-induced obese rats. Clinics (Sao Paulo) 2014; 69:265-70. [PMID: 24714835 PMCID: PMC3971365 DOI: 10.6061/clinics/2014(04)08] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 09/19/2013] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE We investigated the influence of resistance training on body composition and matrix metalloproteinase 2 activity in skeletal muscles of rats fed a high-fat diet. METHODS Thirty-two Wistar rats were divided into four experimental groups (n = 8/each) according to diet and exercise status: Control (standard diet), Obese Control (high-fat diet), Resistance Training (standard diet) and Obese Resistance Training (high-fat diet) groups. Animals were fed a high-fat diet for 12 weeks to promote excessive weight gain. Resistance Training groups performed 12 weeks of training periods after this period in a vertical ladder three times/week. Fat percentage, fat-free mass and fat mass were assessed using dual-energy X-ray absorptiometry, and matrix metalloproteinase 2 activity in biceps and gastrocnemius muscles was analyzed using zymography. RESULTS Resistance training significantly reduced body and fat masses and fat percentages in both trained groups (p<0.05). The maximal carrying load between trained groups was not different, but relative force was higher in the Resistance Training group (p<0.05). Of note, increased matrix metalloproteinase 2 activity was noted in the tested muscles of both trained groups (p<0.05). CONCLUSION In conclusion, altered body composition and muscle matrix metalloproteinase 2 activity promoted by excessive weight gain were positively modified by resistance training.
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Affiliation(s)
- Markus Vinicius Campos Souza
- Department of Physiological Sciences, Laboratory of Exercise Physiology, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Richard Diego Leite
- Department of Physical Education, Federal University of Maranhão, São Luis, MA, Brazil
| | - Anderson Diogo de Souza Lino
- Department of Physiological Sciences, Laboratory of Exercise Physiology, Federal University of São Carlos, São Carlos, SP, Brazil
| | | | | | - Heloisa Sobreiro Selistre de Araújo
- Department of Physiological Sciences, Laboratory of Biochemistry and Molecular Biology, Federal University of São Carlos, São Carlos, SP, Brazil
| | | | - Gilberto Eiji Shiguemoto
- Department of Physiological Sciences, Laboratory of Exercise Physiology, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Sérgio Eduardo de Andrade Perez
- Department of Physiological Sciences, Laboratory of Exercise Physiology, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Luiz Guilherme Kraemer-Aguiar
- Clinical and Experimental Research Laboratory in Vascular Biology (Biovasc), State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Peixinho-Pena LF, Fernandes J, de Almeida AA, Novaes Gomes FG, Cassilhas R, Venancio DP, de Mello MT, Scorza FA, Cavalheiro EA, Arida RM. A strength exercise program in rats with epilepsy is protective against seizures. Epilepsy Behav 2012; 25:323-8. [PMID: 23103304 DOI: 10.1016/j.yebeh.2012.08.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 08/03/2012] [Accepted: 08/06/2012] [Indexed: 01/15/2023]
Abstract
The beneficial effects of physical exercise on epilepsy, such as a decreased seizure frequency, have been observed following aerobic exercise programs in both clinical and experimental studies. However, it is not well clarified whether other types of exercise, including strength exercise, can provide similar benefits for epilepsy. Forty four animals with epilepsy were continuously monitored 24 h a day for 60 days and divided into two periods of 30 days. The first period was used to determine the number of seizures before beginning the physical exercise program, and the second period was utilized to determine the number of seizures during the strength training. The mean frequency of seizures in the control and SHAM groups increased significantly from period 1 to period 2. Although the frequency of seizures did not change significantly between the two periods of 30 days of observation in the strength exercise group, a significant reduction in the seizure frequency was observed compared with the control and SHAM groups in period 2. Our study demonstrated that a strength exercise program exerted a significant influence on the seizure frequency in animals with epilepsy and strengthens the observed beneficial effect of exercise on epilepsy that has been demonstrated in animal studies. The finding of this nonclinical study can open a new window to verify the beneficial contribution of strength exercise in epilepsy. Further experimental and clinical investigations are necessary to explore the extent to which strength exercise interferes with the epileptic condition.
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Ramos JE, Al-Nakkash L, Peterson A, Gump BS, Janjulia T, Moore MS, Broderick TL, Carroll CC. The soy isoflavone genistein inhibits the reduction in Achilles tendon collagen content induced by ovariectomy in rats. Scand J Med Sci Sports 2012; 22:e108-14. [PMID: 22852581 DOI: 10.1111/j.1600-0838.2012.01516.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/02/2012] [Indexed: 11/27/2022]
Abstract
The objective of this study was to evaluate the effects of genistein and moderate intensity exercise on Achilles tendon collagen and cross-linking in intact and ovariectomized (OVX) female Sprague-Dawley rats. Rats were separated into eight groups (n = 9/group): intact or OVX, treadmill exercised or sedentary, genistein-treated (300 mg/kg/day) or vehicle. After 6 weeks, tendons were assayed for the collagen-specific amino acid hydroxyproline and hydroxylyslpyridinoline (HP). Collagen content was not influenced by exercise (P = 0.40) but was lower (P < 0.001) in OVX-vehicle rats compared with intact vehicle rats (OVX: 894 ± 35 μg collagen/mg dry weight; intact: 1185 ± 72 μg collagen/mg dry weight). In contrast, collagen content in OVX rats treated with genistein was greater (P = 0.010, 1198 ± 121 μg collagen/mg dry weight) when compared with untreated rats and was not different from intact rats (P = 0.89). HP content was lower in OVX genistein-treated rats when compared with intact genistein-treated rats, but only within the sedentary animals (P = 0.05, intact-treated: 232 ± 39 mmol/mol collagen; OVX-treated: 144 ± 21 mmol/mol collagen). Our findings suggest that ovariectomy leads to a reduction in tendon collagen, which is prevented by genistein. HP content, however, may not have increased in proportion to the addition of collagen. Genistein may be useful for improving tendon collagen content in conditions of estrogen deficiency.
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Affiliation(s)
- J E Ramos
- Department of Physiology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, Arizona, USA
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Spatial memory is improved by aerobic and resistance exercise through divergent molecular mechanisms. Neuroscience 2012; 202:309-17. [DOI: 10.1016/j.neuroscience.2011.11.029] [Citation(s) in RCA: 230] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 11/10/2011] [Accepted: 11/10/2011] [Indexed: 01/05/2023]
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