KTJ416 Prevents Oxidative Stress-Induced Skeletal Muscle Damage Through the Down-Regulation of Ceramide

2011 ◽  
Vol 37 (8) ◽  
pp. S141
Author(s):  
T.J. Kim ◽  
M.H. Jung ◽  
Y.J. Kang ◽  
S.J. Park ◽  
D.E. Ji ◽  
...  
2009 ◽  
Vol 610 (1-3) ◽  
pp. 119-127 ◽  
Author(s):  
Jasson Chiang ◽  
Yuh-Chiang Shen ◽  
Yea-Hwey Wang ◽  
Yu-Chang Hou ◽  
Chien-Chih Chen ◽  
...  

2012 ◽  
Vol 138 (suppl 1) ◽  
pp. A140-A140
Author(s):  
Tack Joong Kim ◽  
Min Ho Jung ◽  
Se Jin Park

1970 ◽  
Vol 1 (1) ◽  
pp. 59-66
Author(s):  
Lázaro Alessandro Soares Nunes ◽  
Fernando Oliveira Catanho da Silva ◽  
Ana Carolina Ceglio ◽  
Talita de Souza Venturini

Introdução: O exercício exaustivo agudo aumenta significativamente o consumo de oxigênio pelo organismo, aumentando a produção de Espécies Reativas de Oxigênio (EROs). Por serem moléculas altamente instáveis, as EROs podem causar danos oxidativos e induzir a morte celular. Para minimizar os efeitos deletérios das EROs o organismo possui sistemas de defesa antioxidante. O objetivo deste estudo foi testar o potencial antioxidante do Panax ginseng através da análise de marcadores de peroxidação lipídica, lesão muscular e capacidade antioxidante após um protocolo de exercício exaustivo agudo de natação realizado em ratos. Material e métodos: Foram utilizados 21 ratos Wistar machos divididos em: grupo controle–CO (n=7); grupo suplementado-exercitado–SG (n=7) e grupo não-suplementado-exercitado-NS (n=7). Foram coletados 10 mL de sangue total para obtenção de soro e posterior realização das análises: peroxidação lipídica (MDA), capacidade antioxidante total (CAT), ácido úrico, creatina quinase (CK), aspartato aminotransferase (AST) e alanina aminotransferase (ALT). Resultados: Observou-se maior concentração de MDA no grupo NS (0,60 ± 0,23μM) em relação aos grupos CO (0,18 ± 0,09 μM) e SG (0,26 ± 0,19 μM), p<0,05. Os níveis elevados de AST observados nos grupos SG (141± 24 U/L) e NS (199 ± 92 U/L) em relação ao CO (89 ± 27 U/L), p<0,05, indicam maior nível de lesão muscular nos grupos exercitados. Não houve diferenças estatísticas para ALT, CK, ácido úrico e CAT. Conclusão: A administração crônica de Panax ginseng favorece a proteção contra o excessivo ataque oxidativo muscular, que ocasiona peroxidação lipídica e eventual perda de função celular.Effects of Panax ginseng Supplementation upon Oxidative Stress and Skeletal Muscle Damage Biomarkers Induced by Acute Forced Exercise in RatsIntroduction: Exhaustive exercise increases significantly oxygen consumption by the organism, which leads to increase in Reactive Oxygen Species (ROS) generation. ROS are highly unstable and reactive molecules that can cause oxidative damage and even the cellular death. To minimize ROS deleterious effects, organism has antioxidant defense systems. The aim of this study was to test Panax Panax ginseng antioxidant capacity through lipid peroxidation, oxidative stress and muscle damage biomarkers after a swimming acute exhaustive exercise protocol in Wistar rats. Materials and methods: Twenty-one rats were divided in: control group–CO (n=7) that was not supplemented and did not realize exercise; Panax ginseng supplemented-exercised group–SG (n=7) that did exhaustive exercise and supplementation; not supplemented-exercised group–NS (n=7) that was not supplemented but did exercise. We collected 10mL of blood to obtain serum for biochemical analyzes: lipid peroxidation (MDA), total antioxidant capacity (CAT), uric acid, creatine kinase (CK), aspartate aminotrasferase (AST) and alanine aminotransferase (ALT). Results: There was an increase in MDA concentration in NS group (0.60 ± 0.23 μM) in comparison to CO (0.18 ± 0.09 μM) and SG (0.26 ± 0.19 μM); the higher AST levels on SG (141± 24 U/L) and NS (199 ± 92 U/L) in comparison to CO group (89 ± 27 U/L), indicating higher levels of muscle damage in both exercised groups. There were no statistical differences in CK, uric acid and ALT levels. Conclusion: We concluded that chronic Panax Panax ginseng supplementation can protect organism against increase in lipid peroxidation induced by exhaustive exercise.


2006 ◽  
Vol 98 (2) ◽  
pp. 220-226 ◽  
Author(s):  
Hsueh-Kuan Lu ◽  
Chin-Cheng Hsieh ◽  
Jen-Jung Hsu ◽  
Yuh-Kuan Yang ◽  
Hong-Nong Chou

Author(s):  
Rebeca Nunes Silva ◽  
Cássia Da Luz Goulart ◽  
Murilo Rezende Oliveira ◽  
Guilherme Yassuyuki Tacao ◽  
Guilherme Dionir Back ◽  
...  

1985 ◽  
Vol 71 (5) ◽  
pp. 463-468 ◽  
Author(s):  
Giovanni Carulli ◽  
Aldo Clerico ◽  
Alessandra Marini ◽  
Maria Grazia Del Chicca ◽  
Renato Vanacore ◽  
...  

The modifications in the concentration of circulating myoglobin have been studied by means of a radioimmunoassay in 15 cancer patients undergoing polychemotherapy including adriamycin. In 8 patients significant increases in myoglobin levels were found after injection of low doses of the drug (25-50 mg/m2). Moreover, a disturbance of the normal biorhythm of the protein was evident in 12 patients. Creatine kinase-MB was evaluated by means of a radioimmunoassay, but there was no relation between an increase in the isoenzyme and an increase in myoglobin. No ECG modifications were detected. These data indicate that the measurement of myoglobin may offer an indication of myocardial or skeletal muscle damage caused by adriamycin.


2012 ◽  
Vol 211 ◽  
pp. S48
Author(s):  
Björn Glinghammar ◽  
Ingalill Rafter ◽  
Ina Schuppe-Koistinen ◽  
Ian Cotgreave

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Hemanshu Patel ◽  
Sidney G. Shaw ◽  
Xu Shi-Wen ◽  
David Abraham ◽  
Daryll M. Baker ◽  
...  

Toll-like receptors (TLRs) are key receptors of the innate immune system which are expressed on immune and nonimmune cells. They are activated by both pathogen-associated molecular patterns and endogenous ligands. Activation of TLRs culminates in the release of proinflammatory cytokines, chemokines, and apoptosis. Ischaemia and ischaemia/reperfusion (I/R) injury are associated with significant inflammation and tissue damage. There is emerging evidence to suggest that TLRs are involved in mediating ischaemia-induced damage in several organs. Critical limb ischaemia (CLI) is the most severe form of peripheral arterial disease (PAD) and is associated with skeletal muscle damage and tissue loss; however its pathophysiology is poorly understood. This paper will underline the evidence implicating TLRs in the pathophysiology of cerebral, renal, hepatic, myocardial, and skeletal muscle ischaemia and I/R injury and discuss preliminary data that alludes to the potential role of TLRs in the pathophysiology of skeletal muscle damage in CLI.


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