Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김종희 | - |
dc.date.accessioned | 2018-03-15T02:34:08Z | - |
dc.date.available | 2018-03-15T02:34:08Z | - |
dc.date.issued | 2012-04 | - |
dc.identifier.citation | Medicine & Science in Sports & Exercise, Apr 2012, 44(4), P.600-609, 10P. | en_US |
dc.identifier.issn | 0195-9131 | - |
dc.identifier.uri | https://insights.ovid.com/crossref?an=00005768-201204000-00006 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/47005 | - |
dc.description.abstract | INTRODUCTION: Extreme disuse and spaceflight elicit rapid skeletal muscle atrophy, accompanied by elevated proinflammatory signaling and impaired stress response proteins (e.g., heat shock proteins (HSP), insulin-like growth factor 1 (IGF-1)). Recovery of muscle mass is delayed during the early stage of reloading after prolonged unloading, with a concomitant impairment of HSP70 and IGF-1. We postulated that proinflammatory signaling and stress response alterations would characterize early and late phases of signaling during reloading. METHODS: Twenty-four adult SD rats were divided into the following groups: controls, 28 d of hind limb unloading (HU), HU + early (7 d) reloading (HU-R7), and HU + late (28 d) reloading (HU-R28). RESULTS: Soleus mass decreased (?55%) with HU and remained depressed (?41%) at HU-R7. Nuclear factor κB activation and oxidative stress were elevated with HU and remained high during reloading. HU elevated inducible nitric oxide synthase and returned to baseline during reloading, whereas 3-nitrotyrosine did not increase with HU and peaked at HU-R7. HU depressed levels of HSP25 phosphorylation at Ser82 and IGF-1. Although p-HSP25 and Akt phosphorylation (Ser473) recovered during early reloading, HSP70, heat shock factor 1, and IGF-1 remained depressed. HSP70, heat shock factor 1, and IGF-1 recovered, whereas p-Akt and 3-nitrotyrosine decreased to control levels at HU-R28. CONCLUSIONS: Reloading elicited an early phase characterized by elevated nuclear factor κB activation, 3-nitrotyrosine, p-HSP25, and p-Akt levels and a delayed phase with recovery of HSP70, IGF-1, and muscle mass. We conclude that the reloading phenotype in skeletal muscle is expressed in two distinct phases related to (a) pro-inflammatory signaling and (b) muscle mass recovery. | en_US |
dc.language.iso | en | en_US |
dc.publisher | American College of Sports Medicine | en_US |
dc.subject | 3-nitrotyrosine | en_US |
dc.subject | Lower Extremity | en_US |
dc.subject | Muscular Atrophy | en_US |
dc.subject | Shock | en_US |
dc.subject | Depressive disorder | en_US |
dc.subject | Nitric Oxide | en_US |
dc.subject | Soleus muscle structure | en_US |
dc.subject | Skeletal muscle atrophy | en_US |
dc.subject | Insulin-Like Growth Factor I | en_US |
dc.subject | Growth Factor | en_US |
dc.subject | Atrophic | en_US |
dc.subject | Heat shock proteins | en_US |
dc.subject | Nitric Oxide Synthase | en_US |
dc.subject | biological adaptation to stress | en_US |
dc.subject | mecasermin | en_US |
dc.title | Biphasic Stress Response in the Soleus during Reloading after Hind Limb Unloading | en_US |
dc.type | Article | en_US |
dc.relation.no | 4 | - |
dc.relation.volume | 44 | - |
dc.identifier.doi | 10.1249/MSS.0b013e31823ab37a | - |
dc.relation.page | 600-609 | - |
dc.relation.journal | MEDICINE AND SCIENCE IN SPORTS AND EXERCISE | - |
dc.contributor.googleauthor | LAWLER, JOHN M. | - |
dc.contributor.googleauthor | KWAK, HYO-BUM | - |
dc.contributor.googleauthor | KIM, JONG-HEE | - |
dc.contributor.googleauthor | LEE, YANG | - |
dc.contributor.googleauthor | HORD, JEFFREY M. | - |
dc.contributor.googleauthor | MARTINEZ, DANIEL A. | - |
dc.relation.code | 2012206606 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF PERFORMING ARTS AND SPORT[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICAL EDUCATION | - |
dc.identifier.pid | carachel07 | - |
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