Article (Scientific journals)
Oral vitamin C attenuates acute ischaemia-reperfusion injury in skeletal muscle.
Kearns, S. R.; Moneley, D.; Murray, P. et al.
2001In Journal of Bone and Joint Surgery, British Volume, 83 (8), p. 1202-6
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Keywords :
Acute Disease; Animals; Ascorbic Acid/therapeutic use; Muscle, Skeletal/drug effects/physiopathology; Random Allocation; Rats; Rats, Sprague-Dawley; Reperfusion Injury/drug therapy/physiopathology; Respiratory Burst
Abstract :
[en] Ischaemia-reperfusion injury (IRI) is caused by endothelial and subendothelial damage by neutrophil-derived oxidants. Vitamin C is an antioxidant which attenuates endothelial injury after IRI. Our aim was to evaluate the effect of oral vitamin C in the prevention of IRI in skeletal muscle. We used a model of cross-clamping (3 hours) and reperfusion (1 hour) of the cremaster muscle in rats. Muscle function was assessed electrophysiologically by electrical field stimulation. Infiltration by neutrophils was determined by the activity of tissue myeloperoxidase (MPO) and tissue oedema by the wet-to-dry ratio. Neutrophil respiratory burst activity was measured in control animals and groups pretreated with vitamin C. IRI significantly decreased muscle function and increased muscle neutrophil MPO activity and muscle oedema. Pretreatment with vitamin C preserved muscle function and reduced tissue oedema and neutrophil infiltration. Neutrophil respiratory burst activity was reduced in the group treated with vitamin C compared with the control group. We conclude that pretreatment with oral vitamin C protects against acute muscle IRI, possibly by attenuating neutrophil respiratory burst activity.
Disciplines :
Orthopedics, rehabilitation & sports medicine
Immunology & infectious disease
Author, co-author :
Kearns, S. R.
Moneley, D.
Murray, P.
Kelly, C.
Daly, Adrian  ;  Université de Liège - ULiège > Département des sciences cliniques > Endocrinologie
Language :
English
Title :
Oral vitamin C attenuates acute ischaemia-reperfusion injury in skeletal muscle.
Publication date :
2001
Journal title :
Journal of Bone and Joint Surgery, British Volume
ISSN :
0301-620X
Publisher :
British Editorial Society of Bone and Joint Surgery, United Kingdom
Volume :
83
Issue :
8
Pages :
1202-6
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 August 2013

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