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Pryor JL, Sweet D, Rosbrook P, Qiao J, Hess HW, Looney DP. Resistance Training in the Heat: Mechanisms of Hypertrophy and Performance Enhancement. J Strength Cond Res 2024; 38:1350-1357. [PMID: 38775794 DOI: 10.1519/jsc.0000000000004815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
ABSTRACT Pryor, JL, Sweet, D, Rosbrook, P, Qiao, J, Hess, HW, and Looney, DP. Resistance training in the heat: Mechanisms of hypertrophy and performance enhancement. J Strength Cond Res 38(7): 1350-1357, 2024-The addition of heat stress to resistance exercise or heated resistance exercise (HRE) is growing in popularity as emerging evidence indicates altered neuromuscular function and an amplification of several mechanistic targets of protein synthesis. Studies demonstrating increased protein synthesis activity have shown temperature-dependent mammalian target of rapamycin phosphorylation, supplemental calcium release, augmented heat shock protein expression, and altered immune and hormone activity. These intriguing observations have largely stemmed from myotube, isolated muscle fiber, or rodent models using passive heating alone or in combination with immobilization or injury models. A growing number of translational studies in humans show comparable results employing local tissue or whole-body heat with and without resistance exercise. While few, these translational studies are immensely valuable as they are most applicable to sport and exercise. As such, this brief narrative review aims to discuss evidence primarily from human HRE studies detailing the neuromuscular, hormonal, and molecular responses to HRE and subsequent strength and hypertrophy adaptations. Much remains unknown in this exciting new area of inquiry from both a mechanistic and functional perspective warranting continued research.
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Affiliation(s)
- J Luke Pryor
- Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, New York; and
| | - Daniel Sweet
- Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, New York; and
| | - Paul Rosbrook
- Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, New York; and
| | - JianBo Qiao
- Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, New York; and
| | - Hayden W Hess
- Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, New York; and
| | - David P Looney
- United States Army Research Institute of Environmental Medicine (USARIEM), Natick, Massachusetts
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Uda M, Yoshihara T, Ichinoseki‐Sekine N, Baba T. Effects of hindlimb unloading on the mevalonate and mechanistic target of rapamycin complex 1 signaling pathways in a fast-twitch muscle in rats. Physiol Rep 2024; 12:e15969. [PMID: 38453353 PMCID: PMC10920058 DOI: 10.14814/phy2.15969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/16/2024] [Accepted: 02/22/2024] [Indexed: 03/09/2024] Open
Abstract
Fast-twitch muscles are less susceptible to disuse atrophy, activate the mechanistic target of rapamycin complex 1 (mTORC1) signaling pathway, and increase protein synthesis under prolonged muscle disuse conditions. However, the mechanism underlying prolonged muscle disuse-induced mTORC1 signaling activation remains unclear. The mevalonate pathway activates the mTORC1 signaling pathway via the prenylation and activation of Ras homolog enriched in brain (Rheb). Therefore, we investigated the effects of hindlimb unloading (HU) for 14 days on the mevalonate and mTORC1 signaling pathways in the plantaris muscle, a fast-twitch muscle, in adult male rats. Rats were divided into HU and control groups. The plantaris muscles of both groups were harvested after the treatment period, and the expression and phosphorylation levels of metabolic and intracellular signaling proteins were analyzed using Western blotting. We found that HU increased the expression of 3-hydroxy-3-methylglutaryl-coenzyme A reductase, the rate-limiting enzyme of the mevalonate pathway, and activated the mTORC1 signaling pathway without activating AKT, an upstream activator of mTORC1. Furthermore, HU increased prenylated Rheb. Collectively, these findings suggest that the activated mevalonate pathway may be involved in the activation of the Rheb/mTORC1 signaling pathway without AKT activation in fast-twitch muscles under prolonged disuse conditions.
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Affiliation(s)
- Munehiro Uda
- School of NursingHirosaki Gakuin UniversityHirosakiAomoriJapan
| | - Toshinori Yoshihara
- Graduate School of Health and Sports ScienceJuntendo UniversityInzaiChibaJapan
| | - Noriko Ichinoseki‐Sekine
- Graduate School of Health and Sports ScienceJuntendo UniversityInzaiChibaJapan
- Faculty of Liberal ArtsThe Open University of JapanChibaJapan
| | - Takeshi Baba
- School of MedicineJuntendo UniversityInzaiChibaJapan
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Yoshihara T, Dobashi S, Naito H. Effects of preconditioning with heat stress on acute exercise-induced intracellular signaling in male rat gastrocnemius muscle. Physiol Rep 2024; 12:e15913. [PMID: 38185480 PMCID: PMC10771927 DOI: 10.14814/phy2.15913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 12/01/2023] [Accepted: 12/01/2023] [Indexed: 01/09/2024] Open
Abstract
Heat stress (HS) induces Akt/mTOR phosphorylation and FoxO3a signaling; however, whether a prior increase in heat shock protein 72 (HSP72) expression affects intracellular signaling following eccentric exercise remains unclear. We analyzed the effects of HS pretreatment on intramuscular signaling in response to acute exercise in 10-week-old male Wistar rats (n = 24). One leg of each rat was exposed to HS and the other served as an internal control (CT). Post-HS, rats were either rested or subjected to downhill treadmill running. Intramuscular signaling responses in the red and white regions of the gastrocnemius muscle were analyzed before, immediately after, or 1 h after exercise (n = 8/group). HS significantly increased HSP72 levels in both deep red and superficial white regions. Although HS did not affect exercise-induced mTOR signaling (S6K1/ERK) responses in the red region, mTOR phosphorylation in the white region was significantly higher in CT legs than in HS legs after exercise. Thr308 phosphorylation of Akt showed region-specific alteration with a decrease in the red region and an increase in the white region immediately after downhill running. Overall, a prior increase in HSP72 expression elicits fiber type-specific changes in exercise-induced Akt and mTOR phosphorylation in rat gastrocnemius muscle.
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Affiliation(s)
| | - Shohei Dobashi
- Graduate School of Health and Sports ScienceJuntendo UniversityChibaJapan
- Institute of Health and Sport SciencesUniversity of TsukubaIbarakiJapan
| | - Hisashi Naito
- Graduate School of Health and Sports ScienceJuntendo UniversityChibaJapan
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AlSabagh AT, Rao MS, Renno WM. The impact of heat therapy on neuromuscular function and muscle atrophy in diabetic rats. Front Physiol 2023; 13:1039588. [PMID: 36685197 PMCID: PMC9849254 DOI: 10.3389/fphys.2022.1039588] [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: 09/08/2022] [Accepted: 12/05/2022] [Indexed: 01/06/2023] Open
Abstract
Introduction: Diabetes Mellitus (DM) is the most common metabolic disease worldwide and is associated with many systemic complications. Muscle atrophy is one of the significant complications in DM patients, making routine tasks laborious as atrophy continues. It is known that heat stress stimulates heat shock proteins and other proteins that maintain muscle mass; however, it is not thoroughly studied in diabetic conditions. This study addressed whether heat therapy can attenuate muscle atrophy in STZ-induced diabetic rats and explored its mechanism of action on specific muscle proteins. Methods: Male Sprague Dawley rats were randomly divided into short-term (3 weeks) and long-term (6 weeks) experiments. In each experiment rats were divided into control, heat therapy, diabetic and diabetic + heat therapy groups. Rats in heat therapy groups were exposed to heat therapy for 30 min daily for three or six weeks in a temperature-controlled (42°C) chamber. Results: The attenuation of neuromuscular functions assessed by Rotarod, Kondziella's inverted screen, and extensor postural thrust tests showed that diabetic rats exposed to heat therapy performed significantly better than diabetic controls. Muscle cross sectional area data established that heat therapy reduced muscle atrophy by 34.3% within 3 weeks and 44.1% within 6 weeks in the diabetic groups. Further, heat therapy significantly decreased muscle atrophy markers (CD68, KLF, and MAFbx) and significantly elevated muscle hypertrophy markers (AKT, mTOR, and HSP70). Conclusions: This study shows the relevance and clinical significance of utilizing heat therapy as a viable treatment to attenuate muscle atrophy in diabetic patients.
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Yoshihara T, Takaragawa M, Dobashi S, Naito H. Losartan treatment attenuates hindlimb unloading-induced atrophy in the soleus muscle of female rats via canonical TGF-β signaling. J Physiol Sci 2022; 72:6. [PMID: 35264097 PMCID: PMC10717208 DOI: 10.1186/s12576-022-00830-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 02/23/2022] [Indexed: 12/23/2022]
Abstract
We investigated the protective effect of losartan, an angiotensin II type 1 receptor blocker, on soleus muscle atrophy. Age-matched male and female Wistar rats were subjected to hindlimb unloading, and the soleus muscle was removed on days 1 and 7 for analysis. Females showed greater reductions in relative weight and myofiber cross-sectional area of the soleus muscle than males on day 7 post-hindlimb unloading. Losartan partially protected females against muscle atrophy. Activation of the canonical TGF-β signaling pathway, assessed via Smad2/3 phosphorylation, was lower in females following losartan treatment and associated with lower levels of protein ubiquitination after 1 (myofibril) and 7 (cytosol) days of unloading. However, no effect was observed in non-canonical TGF-β signaling (p44/p42 and p38 MAPK phosphorylation) in males or females during unloading. Our results suggest that losartan provides partial protection against hindlimb unloading-induced soleus muscle atrophy in female rats, possibly associated with decreased canonical TGF-β signaling.
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Affiliation(s)
- Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan.
| | - Mizuki Takaragawa
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan
- Institute of Health and Sports Science & Medicine, Juntendo University, Chiba, Japan
| | - Shohei Dobashi
- Institute of Health and Sports Science & Medicine, Juntendo University, Chiba, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan
- Institute of Health and Sports Science & Medicine, Juntendo University, Chiba, Japan
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Hirunsai M, Srikuea R. Autophagy-lysosomal signaling responses to heat stress in tenotomy-induced rat skeletal muscle atrophy. Life Sci 2021; 275:119352. [PMID: 33771521 DOI: 10.1016/j.lfs.2021.119352] [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: 10/18/2020] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 10/21/2022]
Abstract
AIMS The autophagy-lysosomal system plays a crucial role in maintaining muscle proteostasis. Excessive stimulation of the autophagic machinery is a major contributor to muscle atrophy induced by tendon transection. Hyperthermia is known to attenuate muscle protein loss during disuse conditions; however, little is known regarding the response of the autophagy pathway to heat stress following tenotomy-induced muscle atrophy. The purpose of this study was to evaluate whether heat stress would have a beneficial impact on the activation of autophagy in tenotomized soleus and plantaris muscles. MAIN METHODS Male Wistar rats were divided into control, control plus heat stress, tenotomy, and tenotomy plus heat stress groups. The effects of tenotomy were evaluated at 8 and 14 days with heat treatment applied using thermal blankets (30 min. day-1, at 40.5-41.5 °C, for 7 days). KEY FINDINGS Heat stress could normalize tenotomy-induced muscle loss and over-activation of autophagy-lysosomal signaling; this effect was evidently observed in soleus muscle tenotomized for 14 days. The autophagy-related proteins LC3B-II and LC3B-II/I tended to decrease, and lysosomal cathepsin L protein expression was significantly suppressed. While p62/SQSTM1 was not altered in response to intermittent heat exposure in tenotomized soleus muscle at day 14. Phosphorylation of the 4E-BP1 protein was significantly increased in tenotomized plantaris muscle; whereas heat stress had no impact on phosphorylation of Akt and FoxO3a proteins in both tenotomized muscles examined. SIGNIFICANCE Our results provide evidence that heat stress associated attenuation of tenotomy-induced muscle atrophy is mediated through limiting over-activation of the autophagy-lysosomal pathway in oxidative and glycolytic muscles.
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Affiliation(s)
- Muthita Hirunsai
- Department of Biopharmacy, Faculty of Pharmacy, Srinakharinwirot University, Nakhon Nayok 26120, Thailand.
| | - Ratchakrit Srikuea
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
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Yoshihara T, Natsume T, Tsuzuki T, Chang SW, Kakigi R, Machida S, Sugiura T, Naito H. Long-term physical inactivity exacerbates hindlimb unloading-induced muscle atrophy in young rat soleus muscle. J Appl Physiol (1985) 2021; 130:1214-1225. [PMID: 33600278 DOI: 10.1152/japplphysiol.00494.2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This study investigated the effects of long-term physical inactivity in adolescent on subsequent hindlimb unloading-induced muscle atrophy in rat soleus muscle. First, 3-wk-old male Wistar rats were assigned to an age-matched control (n = 6) or a physical inactivity (n = 8) group. Rats in the physical inactivity group were housed in narrow cages with approximately half the usual floor space for 8 wk to limit range of movement. Whole body energy consumption was measured, and the blood, organs, femoral bone, and hindlimb muscles were removed. We found that long-term physical inactivity did not affect the metabolic and physiological characteristics of growing rats. Then, fifty-six 3-wk-old male Wistar rats were assigned randomly into control (n = 28) and physical inactivity (n = 28) groups. After 8 wk, the rats in both groups underwent hindlimb unloading. The soleus muscles were removed before unloading (0 day), and 1, 3, and 7 days after unloading (n = 7 for each). Although the soleus muscle weight was significantly decreased after 7 days of hindlimb unloading in both groups, the decrease was drastic in the inactive group. A significant interaction between inactivity and unloading (P < 0.01) was observed according to the 4-hydroxynonenal-conjugated protein levels and the histone deacetylase 4 (HDAC4) and NF-κB protein levels. HDAC4 and NF-κB p65 protein levels in the physical inactivity group increased significantly 1 day after hindlimb unloading, along with the mRNA levels of their downstream targets myogenin and muscle RING finger protein 1 (MuRF1). Subsequent protein ubiquitination was upregulated by long-term physical inactivity (P < 0.05).NEW & NOTEWORTHY Long-term physical inactivity exacerbates hindlimb unloading-induced disuse muscle atrophy in young rat soleus muscles, possibly mediated by oxidative stress-induced protein ubiquitination via HDAC4- and NF-κB p65-induced MuRF1 mRNA upregulation.
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Affiliation(s)
- Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan.,Faculty of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Toshiharu Natsume
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | | | - Shuo-Wen Chang
- Faculty of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Ryo Kakigi
- Faculty of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan.,Faculty of Management & Information Sciences, Josai International University, Togane, Chiba, Japan
| | - Shuichi Machida
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan.,Faculty of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Takao Sugiura
- Faculty of Education, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan.,Faculty of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
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Uda M, Yoshihara T, Ichinoseki-Sekine N, Baba T, Yoshioka T. Potential roles of neuronal nitric oxide synthase and the PTEN-induced kinase 1 (PINK1)/Parkin pathway for mitochondrial protein degradation in disuse-induced soleus muscle atrophy in adult rats. PLoS One 2020; 15:e0243660. [PMID: 33296434 PMCID: PMC7725317 DOI: 10.1371/journal.pone.0243660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 11/25/2020] [Indexed: 12/18/2022] Open
Abstract
Excessive nitric oxide (NO) production and mitochondrial dysfunction can activate protein degradation in disuse-induced skeletal muscle atrophy. However, the increase in NO production in atrophied muscles remains controversial. In addition, although several studies have investigated the PTEN-induced kinase 1 (PINK1)/Parkin pathway, a mitophagy pathway, in atrophied muscle, the involvement of this pathway in soleus muscle atrophy is unclear. In this study, we investigated the involvement of neuronal nitric oxide synthase (nNOS) and the PINK1/Parkin pathway in soleus muscle atrophy induced by 14 days of hindlimb unloading (HU) in adult rats. HU lowered the weight of the soleus muscles. nNOS expression showed an increase in atrophied soleus muscles. Although HU increased malondialdehyde as oxidative modification of the protein, it decreased 6-nitrotryptophan, a marker of protein nitration. Additionally, the nitrosocysteine content and S-nitrosylated Parkin were not altered, suggesting the absence of excessive nitrosative stress after HU. The expression of PINK1 and Parkin was also unchanged, whereas the expression of heat shock protein 70 (HSP70), which is required for Parkin activity, was reduced in atrophied soleus muscles. Moreover, we observed accumulation and reduced ubiquitination of high molecular weight mitofusin 2, which is a target of Parkin, in atrophied soleus muscles. These results indicate that excessive NO is not produced in atrophied soleus muscles despite nNOS accumulation, suggesting that excessive NO dose not mediate in soleus muscle atrophy at least after 14 days of HU. Furthermore, the PINK1/Parkin pathway may not play a role in mitophagy at this time point. In contrast, the activity of Parkin may be downregulated because of reduced HSP70 expression, which may contribute to attenuated degradation of target proteins in the atrophied soleus muscles after 14 days of HU. The present study provides new insights into the roles of nNOS and a protein degradation pathway in soleus muscle atrophy.
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Affiliation(s)
- Munehiro Uda
- School of Nursing, Hirosaki Gakuin University, Hirosaki, Aomori, Japan
- * E-mail: ,
| | - Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Noriko Ichinoseki-Sekine
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
- Faculty of Liberal Arts, The Open University of Japan, Chiba, Japan
| | - Takeshi Baba
- School of Medicine, Juntendo University, Inzai, Chiba, Japan
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Kim K, Monroe JC, Gavin TP, Roseguini BT. Local Heat Therapy to Accelerate Recovery After Exercise-Induced Muscle Damage. Exerc Sport Sci Rev 2020; 48:163-169. [PMID: 32658042 DOI: 10.1249/jes.0000000000000230] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The prolonged impairment in muscle strength, power, and fatigue resistance after eccentric exercise has been ascribed to a plethora of mechanisms, including delayed muscle refueling and microvascular and mitochondrial dysfunction. This review explores the hypothesis that local heat therapy hastens functional recovery after strenuous eccentric exercise by facilitating glycogen resynthesis, reversing vascular derangements, augmenting mitochondrial function, and stimulating muscle protein synthesis.
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Affiliation(s)
- Kyoungrae Kim
- Department of Health and Kinesiology, Purdue University, West Lafayette, IN
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Kim K, Monroe JC, Gavin TP, Roseguini BT. Skeletal muscle adaptations to heat therapy. J Appl Physiol (1985) 2020; 128:1635-1642. [PMID: 32352340 DOI: 10.1152/japplphysiol.00061.2020] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The therapeutic effects of heat have been harnessed for centuries to treat skeletal muscle disorders and other pathologies. However, the fundamental mechanisms underlying the well-documented clinical benefits associated with heat therapy (HT) remain poorly defined. Foundational studies in cultured skeletal muscle and endothelial cells, as well as in rodents, revealed that episodic exposure to heat stress activates a number of intracellular signaling networks and promotes skeletal muscle remodeling. Renewed interest in the physiology of HT in recent years has provided greater understanding of the signals and molecular players involved in the skeletal muscle adaptations to episodic exposures to HT. It is increasingly clear that heat stress promotes signaling mechanisms involved in angiogenesis, muscle hypertrophy, mitochondrial biogenesis, and glucose metabolism through not only elevations in tissue temperature but also other perturbations, including increased intramyocellular calcium and enhanced energy turnover. The few available translational studies seem to indicate that the earlier observations in rodents also apply to human skeletal muscle. Indeed, recent findings revealed that both local and whole-body HT may promote capillary growth, enhance mitochondrial content and function, improve insulin sensitivity and attenuate disuse-induced muscle wasting. This accumulating body of work implies that HT may be a practical treatment to combat skeletal abnormalities in individuals with chronic disease who are unwilling or cannot participate in traditional exercise-training regimens.
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Affiliation(s)
- Kyoungrae Kim
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana
| | - Jacob C Monroe
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana
| | - Timothy P Gavin
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana
| | - Bruno T Roseguini
- Department of Health and Kinesiology, Purdue University, West Lafayette, Indiana
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Kim K, Reid BA, Ro B, Casey CA, Song Q, Kuang S, Roseguini BT. Heat therapy improves soleus muscle force in a model of ischemia-induced muscle damage. J Appl Physiol (1985) 2019; 127:215-228. [PMID: 31161885 DOI: 10.1152/japplphysiol.00115.2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Leg muscle ischemia in patients with peripheral artery disease (PAD) leads to alterations in skeletal muscle morphology and reduced leg strength. We tested the hypothesis that exposure to heat therapy (HT) would improve skeletal muscle function in a mouse model of ischemia-induced muscle damage. Male 42-wk-old C57Bl/6 mice underwent ligation of the femoral artery and were randomly assigned to receive HT (immersion in a water bath at 37°C, 39°C, or 41°C for 30 min) or a control intervention for 3 wk. At the end of the treatment, the animals were anesthetized and the soleus and extensor digitorum longus (EDL) muscles were harvested for the assessment of contractile function and examination of muscle morphology. A subset of animals was used to examine the impact of a single HT session on the expression of genes involved in myogenesis and the regulation of muscle mass. Relative soleus muscle mass was significantly higher in animals exposed to HT at 39°C compared with the control group (control: 0.36 ± 0.01 mg/g versus 39°C: 0.40 ± 0.01 mg/g, P = 0.024). Maximal absolute force of the soleus was also significantly higher in animals treated with HT at 37°C and 39°C (control: 274.7 ± 6.6 mN; 37°C: 300.1 ± 7.7 mN; 39°C: 299.5 ± 10 mN, P < 0.05). In the soleus, but not the EDL muscle, a single session of HT enhanced the mRNA expression of myogenic factors as well as of both positive and negative regulators of muscle mass. These findings suggest that the beneficial effects of HT are muscle specific and dependent on the treatment temperature in a model of PAD. NEW & NOTEWORTHY This is the first study to comprehensively examine the impact of temperature and muscle fiber type composition on the adaptations to repeated heat stress in a model of ischemia-induced muscle damage. Exposure to heat therapy (HT) at 37°C and 39°C, but not at 41°C, improved force development of the isolated soleus muscle. These results suggest that HT may be a practical therapeutic tool to restore muscle mass and strength in patients with peripheral artery disease.
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Affiliation(s)
- Kyoungrae Kim
- Department of Health and Kinesiology, Purdue University , West Lafayette, Indiana
| | - Blake A Reid
- Department of Health and Kinesiology, Purdue University , West Lafayette, Indiana
| | - Bohyun Ro
- Department of Physical Education, Dong-A University , Busan , Korea
| | - Caitlin A Casey
- Department of Health and Kinesiology, Purdue University , West Lafayette, Indiana
| | - Qifan Song
- Department of Statistics, Purdue University , West Lafayette, Indiana
| | - Shihuan Kuang
- Department of Animal Sciences, Purdue University , West Lafayette, Indiana
| | - Bruno T Roseguini
- Department of Health and Kinesiology, Purdue University , West Lafayette, Indiana
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12
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Yoshihara T, Tsuzuki T, Chang SW, Kakigi R, Sugiura T, Naito H. Exercise preconditioning attenuates hind limb unloading-induced gastrocnemius muscle atrophy possibly via the HDAC4/Gadd45 axis in old rats. Exp Gerontol 2019; 122:34-41. [PMID: 31009659 DOI: 10.1016/j.exger.2019.04.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 04/01/2019] [Accepted: 04/18/2019] [Indexed: 11/25/2022]
Abstract
The mechanisms involved in unloading-induced skeletal muscle loss may be age-specific, and the evidence for exercise preconditioning-induced protection against disuse muscle atrophy in aged rats is limited. Therefore, in this study, we investigated age-related differences in the activation of the HDAC4/Gadd45α pathway following hindlimb unloading (HU). We also assessed the protective effect of preconditioning exercise on this pathway in young and old rat gastrocnemius muscle. Three-month-old (young, n = 18) and 24-month-old (old, n = 18) male Wistar rats were assigned to the following groups: control group (n = 6), seven days of HU group (n = 6), and a bout of exercise preconditioning prior to HU (Ex+HU) group (n = 6). Rats of both ages in the Ex + HU group ran continuously on a motor-driven treadmill (0° slope, 20 m/min, 15 min) prior to HU. The gastrocnemius muscles were removed after 7 days of HU and analyzed for protein content and mRNA expression. Gastrocnemius muscle weight was significantly higher in the Ex+HU group than in the HU group of old rats, but not in young rats. Levels of HDAC4 protein and mRNA were significantly increased in the old HU group. However, the increase was significantly suppressed in the old Ex+HU group. Moreover, the protective effect of exercise preconditioning had a positive effect on Gadd45α mRNA and protein levels only in the old Ex+HU group. No exercise preconditioning-related protection was observed in the young rats. Our data indicated that a single bout of preconditioning exercise prior to HU may exert a protective effect in disuse muscle atrophy in old rats and that these effects may be partially mediated by the HDAC4/Gadd45α axis.
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Affiliation(s)
- Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba 270-1695, Japan.
| | - Takamasa Tsuzuki
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi 468-8503, Japan.
| | - Shuo-Wen Chang
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba 270-1695, Japan.
| | - Ryo Kakigi
- Faculty of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan.
| | - Takao Sugiura
- Faculty of Education, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8513, Japan.
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba 270-1695, Japan.
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Yoshihara T, Natsume T, Tsuzuki T, Chang SW, Kakigi R, Sugiura T, Naito H. Sex differences in forkhead box O3a signaling response to hindlimb unloading in rat soleus muscle. J Physiol Sci 2019; 69:235-244. [PMID: 30259391 PMCID: PMC10716962 DOI: 10.1007/s12576-018-0640-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 09/16/2018] [Indexed: 12/28/2022]
Abstract
We tested the hypothesis that there are sex differences in hindlimb unloading-induced activation of the forkhead box subfamily O3a (FoxO3a) signaling pathway in rat soleus muscle. Age-matched male and female Wistar rats were subjected to hindlimb unloading, and the soleus muscle was removed before or 1 or 7 days after unloading. Female rats showed greater percent changes in relative soleus muscle weight than males. FoxO3a phosphorylation was lower in females than in males and was associated with higher levels of protein ubiquitination 7 days after unloading. Heat shock protein 72 (Hsp72) levels were lower in female rats and increased in males during unloading. Female rats showed slightly higher myostatin levels, which showed a non-significant decline in male rats following unloading. Thus, males and females show different responses to the FoxO3a/ubiquitin-proteasome pathway following hindlimb unloading in rat soleus muscle, which may be associated with differences in Hsp72 expression and myostatin signaling.
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Affiliation(s)
- Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan.
| | - Toshiharu Natsume
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan
| | - Takamasa Tsuzuki
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Shuo-Wen Chang
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan
| | - Ryo Kakigi
- Faculty of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Takao Sugiura
- Faculty of Education, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8513, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan
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Yoshihara T, Sugiura T, Miyaji N, Yamamoto Y, Shibaguchi T, Kakigi R, Naito H, Goto K, Ohmori D, Yoshioka T. Effect of a combination of astaxanthin supplementation, heat stress, and intermittent reloading on satellite cells during disuse muscle atrophy. J Zhejiang Univ Sci B 2019; 19:844-852. [PMID: 30387334 DOI: 10.1631/jzus.b1800076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We examined the effect of a combination of astaxanthin (AX) supplementation, repeated heat stress, and intermittent reloading (IR) on satellite cells in unloaded rat soleus muscles. Forty-nine male Wistar rats (8-week-old) were divided into control, hind-limb unweighting (HU), IR during HU, IR with AX supplementation, IR with repeated heat stress (41.0-41.5 °C for 30 min), and IR with AX supplementation and repeated heat stress groups. After the experimental period, the antigravitational soleus muscle was analyzed using an immunohistochemical technique. Our results revealed that the combination of dietary AX supplementation and heat stress resulted in protection against disuse muscle atrophy in the soleus muscle. This protective effect may be partially due to a higher satellite cell number in the atrophied soleus muscle in the IR/AX/heat stress group compared with the numbers found in the other groups. We concluded that the combination treatment with dietary AX supplementation and repeated heat stress attenuates soleus muscle atrophy, in part by increasing the number of satellite cells.
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Affiliation(s)
- Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba 270-1695, Japan
| | - Takao Sugiura
- Faculty of Education, Yamaguchi University, Yamaguchi, Yamaguchi 753-8513, Japan
| | | | - Yuki Yamamoto
- Institute of Health and Sports Science, Kurume University, Kurume, Fukuoka 839-8502, Japan
| | - Tsubasa Shibaguchi
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - Ryo Kakigi
- Faculty of Medicine, Juntendo University, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba 270-1695, Japan
| | - Katsumasa Goto
- Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi, Aichi 440-8511, Japan
| | - Daijiro Ohmori
- Department of Chemistry, School of Medicine, Juntendo University, Inzai, Chiba 270-1695, Japan
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Xing T, Gao F, Tume RK, Zhou G, Xu X. Stress Effects on Meat Quality: A Mechanistic Perspective. Compr Rev Food Sci Food Saf 2018; 18:380-401. [PMID: 33336942 DOI: 10.1111/1541-4337.12417] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/31/2018] [Accepted: 11/12/2018] [Indexed: 12/16/2022]
Abstract
Stress inevitably occurs from the farm to abattoir in modern livestock husbandry. The effects of stress on the behavioral and physiological status and ultimate meat quality have been well documented. However, reports on the mechanism of stress effects on physiological and biochemical changes and their consequent effects on meat quality attributes have been somewhat disjointed and limited. Furthermore, the causes of variability in meat quality traits among different animal species, muscle fibers within an animal, and even positions within a piece of meat in response to stress are still not entirely clear. This review 1st summarizes the primary stress factors, including heat stress, preslaughter handling stress, oxidative stress, and other stress factors affecting animal welfare; carcass quality; and eating quality. This review further delineates potential stress-induced pathways or mediators, including AMP-activated protein kinase-mediated energy metabolism, crosstalk among calcium signaling pathways and reactive oxygen species, protein modification, apoptosis, calpain and cathepsin proteolytic systems, and heat shock proteins that exert effects that cause biochemical changes during the early postmortem period and affect the subsequent meat quality. To obtain meat of high quality, further studies are needed to unravel the intricate mechanisms involving the aforementioned signaling pathways or mediators and their crosstalk.
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Affiliation(s)
- Tong Xing
- College of Animal Science and Technology, Key Laboratory of Animal Products Processing, Ministry of Agriculture, Key Laboratory of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Feng Gao
- College of Animal Science and Technology, Key Laboratory of Animal Products Processing, Ministry of Agriculture, Key Laboratory of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Ronald K Tume
- College of Food Science and Technology, Nanjing Agricultural Univ., Nanjing, 210095, Jiangsu, China
| | - Guanghong Zhou
- College of Food Science and Technology, Nanjing Agricultural Univ., Nanjing, 210095, Jiangsu, China
| | - Xinglian Xu
- College of Food Science and Technology, Nanjing Agricultural Univ., Nanjing, 210095, Jiangsu, China
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Ohira T, Higashibata A, Seki M, Kurata Y, Kimura Y, Hirano H, Kusakari Y, Minamisawa S, Kudo T, Takahashi S, Ohira Y, Furukawa S. The effects of heat stress on morphological properties and intracellular signaling of denervated and intact soleus muscles in rats. Physiol Rep 2018; 5:5/15/e13350. [PMID: 28784851 PMCID: PMC5555886 DOI: 10.14814/phy2.13350] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 12/21/2022] Open
Abstract
The effects of heat stress on the morphological properties and intracellular signaling of innervated and denervated soleus muscles were investigated. Heat stress was applied to rats by immersing their hindlimbs in a warm water bath (42°C, 30 min/day, every other day following unilateral denervation) under anesthesia. During 14 days of experimental period, heat stress for a total of seven times promoted growth‐related hypertrophy in sham‐operated muscles and attenuated atrophy in denervated muscles. In denervated muscles, the transcription of ubiquitin ligase, atrogin‐1/muscle atrophy F‐box (Atrogin‐1), and muscle RING‐finger protein‐1 (MuRF‐1), genes was upregulated and ubiquitination of proteins was also increased. Intermittent heat stress inhibited the upregulation of Atrogin‐1, but not MuRF‐1 transcription. And the denervation‐caused reduction in phosphorylated protein kinase B (Akt), 70‐kDa heat‐shock protein (HSP70), and peroxisome proliferator‐activated receptor γ coactivator‐1α (PGC‐1α), which are negative regulators of Atrogin‐1 and MuRF‐1 transcription, was mitigated. In sham‐operated muscles, repeated application of heat stress did not affect Atrogin‐1 and MuRF‐1 transcription, but increased the level of phosphorylated Akt and HSP70, but not PGC‐1α. Furthermore, the phosphorylation of Akt and ribosomal protein S6, which is known to stimulate protein synthesis, was increased immediately after a single heat stress particularly in the sham‐operated muscles. The effect of a heat stress was suppressed in denervated muscles. These results indicated that the beneficial effects of heat stress on the morphological properties of muscles were brought regardless of innervation. However, the responses of intracellular signaling to heat stress were distinct between the innervated and denervated muscles.
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Affiliation(s)
- Takashi Ohira
- Division of Aerospace Medicine, Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan .,Space Biomedical Research Group, Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, Japan
| | - Akira Higashibata
- Japanese Experiment Module Utilization Center, Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, Japan
| | - Masaya Seki
- Advanced Engineering Services Co. Ltd., Tsukuba, Ibaraki, Japan
| | - Yoichi Kurata
- Advanced Medical Research Center, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Yayoi Kimura
- Advanced Medical Research Center, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Hisashi Hirano
- Advanced Medical Research Center, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Yoichiro Kusakari
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Susumu Minamisawa
- Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan
| | - Takashi Kudo
- Laboratory Animal Resource Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Satoru Takahashi
- Laboratory Animal Resource Center, Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yoshinobu Ohira
- Graduate School of Health and Sports Science, Doshisha University, Kyoto, Japan
| | - Satoshi Furukawa
- Space Biomedical Research Group, Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, Japan
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17
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Cruzen SM, Baumgard LH, Gabler NK, Pearce SC, Lonergan SM. Temporal proteomic response to acute heat stress in the porcine muscle sarcoplasm1. J Anim Sci 2017. [DOI: 10.2527/jas.2017.1375] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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18
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Yoshihara T, Yamamoto Y, Shibaguchi T, Miyaji N, Kakigi R, Naito H, Goto K, Ohmori D, Yoshioka T, Sugiura T. Dietary astaxanthin supplementation attenuates disuse-induced muscle atrophy and myonuclear apoptosis in the rat soleus muscle. J Physiol Sci 2017; 67:181-190. [PMID: 27117878 PMCID: PMC10717173 DOI: 10.1007/s12576-016-0453-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 04/15/2016] [Indexed: 12/01/2022]
Abstract
Extended periods of skeletal muscle disuse results in muscle atrophy and weakness. Currently, no therapeutic treatment is available for the prevention of this problem. Nonetheless, growing evidence suggests that prevention of disuse-induced oxidative stress in inactive muscle fibers can delay inactivity-induced muscle wasting. Therefore, this study tested the hypothesis that dietary supplementation with the antioxidant astaxanthin would protect against disuse muscle atrophy, in part, by prevention of myonuclear apoptosis. Wistar rats (8 weeks old) were divided into control (CT, n = 9), hindlimb unloading (HU, n = 9), and hindlimb unloading with astaxanthin (HU + AX, n = 9) groups. Following 2 weeks of dietary supplementation, rats in the HU and HU + AX groups were exposed to unloading for 7 days. Seven-day unloading resulted in reduced soleus muscle weight and myofiber cross-sectional area (CSA) by ~30 and ~47 %, respectively. Nonetheless, relative muscle weights and CSA of the soleus muscle in the HU + AX group were significantly greater than those of the HU group. Moreover, astaxanthin prevented disuse-induced increase in the number of terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL)-positive nuclei. We conclude that astaxanthin supplementation prior to and during hindlimb unloading attenuates soleus muscle atrophy, in part, by suppressing myonuclear apoptosis.
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Affiliation(s)
- Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan.
| | - Yuki Yamamoto
- Sports Research and Development Core, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - Tsubasa Shibaguchi
- Graduate School of Frontier Biosciences, Osaka University, 1-17 Machikaneyama-cho, Toyonaka, Osaka, Japan
| | - Nobuyuki Miyaji
- Toyo Koso Kagaku Co. Ltd., 4-4-27 Horie, Urayasu, Chiba, Japan
| | - Ryo Kakigi
- Faculty of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan
| | - Katsumasa Goto
- Graduate School of Health Sciences, Toyohashi SOZO University, 20-1 Matsushita, Toyohashi, Aichi, Japan
| | - Daijiro Ohmori
- Department of Chemistry, School of Medicine, Juntendo University, 1-1 Hrakagakuendai, Inzai, Chiba, Japan
| | | | - Takao Sugiura
- Faculty of Education, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Japan
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19
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Yoshihara T, Kobayashi H, Kakigi R, Sugiura T, Naito H. Heat stress-induced phosphorylation of FoxO3a signalling in rat skeletal muscle. Acta Physiol (Oxf) 2016; 218:178-187. [PMID: 27306326 DOI: 10.1111/apha.12735] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 04/03/2016] [Accepted: 06/09/2016] [Indexed: 01/10/2023]
Abstract
AIM A recent study demonstrated that FoxO3a was directly induced by the overexpression of Hsp72 in rat soleus muscle. However, whether heat stress treatment induces FoxO3a phosphorylation in rat skeletal muscle remains unclear. This study examined the effects of heat stress on the regulation of the FoxO3a signalling pathway in rat skeletal muscle. METHODS Thirty-two male Wistar rats (15 weeks old) were randomly assigned into two groups; sedentary control group (Sed, n = 8) and experimental group (n = 24). After an overnight fast, one leg of each rat (HS leg) in the experimental group was immersed in hot water (43 °C) for 30 min, and the soleus and plantaris muscles in both legs were removed immediately (0 min), 30 min, 60 min, or 24 h after the heat stress (n = 6 each group). The contralateral, non-heated leg in the experimental group served as an internal control (CT leg). RESULTS Heat stress treatment resulted in a significant increase in FoxO3a phosphorylation (Ser253) in the soleus and plantaris muscles of heat-stressed legs after 24 h. Hsp72 expression in heat-stressed legs was significantly higher at 60 min and 24 h in these muscles. Activation of the PTEN/Akt and MEK/ERK pathways was also observed in these muscles immediately after stress, but not at 24 h. There were no differences in FoxO1 and AMPKα phosphorylation in either muscle. CONCLUSION Heat stress in rat skeletal muscle induces phosphorylation of FoxO3a signalling, and it may be related to Hsp72 upregulation, and the activation of the PTEN/Akt and MEK/ERK pathways.
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Affiliation(s)
- T. Yoshihara
- Graduate School of Health and Sports Science; Juntendo University; Inzai Chiba Japan
| | - H. Kobayashi
- Graduate School of Health and Sports Science; Juntendo University; Inzai Chiba Japan
- Mito Medical Center; Tsukuba University Hospital; Mito Ibaraki Japan
| | - R. Kakigi
- Faculty of Medicine; Juntendo University; Bunkyo-ku Tokyo Japan
| | - T. Sugiura
- Faculty of Education; Yamaguchi University; Yamaguchi Yamaguchi Japan
| | - H. Naito
- Graduate School of Health and Sports Science; Juntendo University; Inzai Chiba Japan
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20
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Koch F, Lamp O, Eslamizad M, Weitzel J, Kuhla B. Metabolic Response to Heat Stress in Late-Pregnant and Early Lactation Dairy Cows: Implications to Liver-Muscle Crosstalk. PLoS One 2016; 11:e0160912. [PMID: 27513961 PMCID: PMC4981427 DOI: 10.1371/journal.pone.0160912] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/27/2016] [Indexed: 11/30/2022] Open
Abstract
Climate changes lead to rising temperatures during summer periods and dramatic economic losses in dairy production. Modern high-yielding dairy cows experience severe metabolic stress during the transition period between late gestation and early lactation to meet the high energy and nutrient requirements of the fetus or the mammary gland, and additional thermal stress during this time has adverse implications on metabolism and welfare. The mechanisms enabling metabolic adaptation to heat apart from the decline in feed intake and milk yield are not fully elucidated yet. To distinguish between feed intake and heat stress related effects, German Holstein dairy cows were first kept at thermoneutral conditions at 15°C followed by exposure to heat-stressed (HS) at 28°C or pair-feeding (PF) at 15°C for 6 days; in late-pregnancy and again in early lactation. Liver and muscle biopsies and plasma samples were taken to assess major metabolic pathway regulation using real-time PCR and Western Blot. The results indicate that during heat stress, late pregnant cows activate Cahill but reduce Cori cycling, prevent increase in skeletal muscle fatty acid oxidation, and utilize increased amounts of pyruvate for gluconeogenesis, without altering ureagenesis despite reduced plane of nutrition. These homeorhetic adaptations are employed to reduce endogenous heat production while diverting amino acids to the growing fetus. Metabolic adaptation to heat stress in early lactation involves increased long-chain fatty acid degradation in muscle peroxisomes, allowance for muscle glucose utilization but diminished hepatic use of amino acid-derived pyruvate for gluconeogenesis and reduced peroxisomal fatty acid oxidation and ATP production in liver of HS compared to PF cows in early lactation. Consequently, metabolic adaptation to heat stress and reduced feed intake differ between late pregnancy and early lactation of dairy cows to maintain energy supply for fetus development or milk production simultaneously reducing endogenous heat production.
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Affiliation(s)
- Franziska Koch
- Institute of Nutritional Physiology “Oskar Kellner”, Leibnitz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Ole Lamp
- Institute of Nutritional Physiology “Oskar Kellner”, Leibnitz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
- Schleswig Holstein Chamber of Agriculture, Department of Animal production, Futterkamp, Blekendorf, Germany
| | - Mehdi Eslamizad
- Institute of Nutritional Physiology “Oskar Kellner”, Leibnitz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
- Department of Animal Science, Campus of Agriculture and Natural Resources, University of Tehran, Tehran, Iran
| | - Joachim Weitzel
- Institute of Reproductive Biology, Leibnitz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Björn Kuhla
- Institute of Nutritional Physiology “Oskar Kellner”, Leibnitz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
- * E-mail:
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