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 ORIGINAL ARTICLE
Year : 2006  |  Volume : 54  |  Issue : 4  |  Page : 390--393

Respiratory-chain enzyme activities in isolated mitochondria of lymphocytes from patients with Parkinson's disease: Preliminary study


1 Department of Biochemistry, L.T.M.M.C and L.T.M.G.H, Mumbai - 400 025, India
2 Radiation Biology and Health Sciences Division, BARC, Trombay, Mumbai, India

Correspondence Address:
Santosh Shinde
9-Dhanshri CHS, Nanda Patkar Road, Vile-Parle (East), Mumbai - 400 057
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0028-3886.28112

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Background: Evidence suggests that mitochondrial dysfunction stimulates the production of reactive oxygen species (ROS) that promote neural cell death in stroke and in Parkinson's disease. The sites of mitochondrial ROS production are not established but are generally believed to be located within the electron transport chain. Aims: We studied the mitochondrial respiratory chain enzymes function from human circulating lymphocytes. Setting and Design: Open study. Materials and Methods: Forty patients with Parkinson's disease (PD) with 30 age-matched control subjects were selected in this study. The patients had received no treatment before the study was conducted. Statistical Analysis: The data from patients and controls were compared using two-tailed student's t-test and values were expressed as means ± standard deviation (SD). Results: Respiratory complex I + III and IV activities were significantly lower (P <0.001) in patients than in control subjects. Conclusions: The use of lymphocytes for investigating the respiratory chain enzymes provides an easy, noninvasive method to assess mitochondrial function in patients with PD. Furthermore, our study supports the hypothesis that a biochemical defect in the respiratory chain may be involved in the pathogenesis of PD.






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Online since 20th March '04
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