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Evaluation of mitochondrial respiratory chain activity in muscle healing by low-level laser therapy

Paper ID Volume ID Publish Year Pages File Format Full-Text
30012 44452 2009 4 PDF Available
Title
Evaluation of mitochondrial respiratory chain activity in muscle healing by low-level laser therapy
Abstract

BackgroundRecent studies demonstrate that low-level laser therapy (LLLT) modulates many biochemical processes, especially the decrease of muscle injures, the increase in mitochondrial respiration and ATP synthesis for accelerating the healing process.ObjectiveIn this work, we evaluated mitochondrial respiratory chain complexes I, II, III and IV and succinate dehydrogenase activities after traumatic muscular injury.MethodsMale Wistar rats were randomly divided into three groups (n = 6): sham (uninjured muscle), muscle injury without treatment, muscle injury with LLLT (AsGa) 5 J/cm2. Gastrocnemius injury was induced by a single blunt-impact trauma. LLLT was used 2, 12, 24, 48, 72, 96, and 120 hours after muscle-trauma.ResultsOur results showed that the activities of complex II and succinate dehydrogenase after 5 days of muscular lesion were significantly increased when compared to the control group. Moreover, our results showed that LLLT significantly increased the activities of complexes I, II, III, IV and succinate dehydrogenase, when compared to the group of injured muscle without treatment.ConclusionThese results suggest that the treatment with low-level laser may induce an increase in ATP synthesis, and that this may accelerate the muscle healing process.

Keywords
LLLT; Mitochondrial respiratory chain; Muscular injury
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Evaluation of mitochondrial respiratory chain activity in muscle healing by low-level laser therapy
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 95, Issue 2, 4 May 2009, Pages 89–92
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Any Questions? feel free to contact us