Movement Disorders (revue)

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Mitochondrial complex I and IV activities in leukocytes from patients with parkin mutations.

Identifieur interne : 003469 ( PubMed/Corpus ); précédent : 003468; suivant : 003470

Mitochondrial complex I and IV activities in leukocytes from patients with parkin mutations.

Auteurs : Meltem Müftüoglu ; Bülent Elibol ; Ozlem Dalmizrak ; Ayse Ercan ; Gülnihal Kulaksiz ; Hamdi Ogüs ; Turgay Dalkara ; Nazmi Ozer

Source :

RBID : pubmed:15133818

English descriptors

Abstract

The parkin protein functions as a RING-type ubiquitin protein ligase. Considering the possibility that impaired ubiquitin-proteosomal system activity may impair antioxidant defenses and enhance oxidative stress, we have investigated the activity of mitochondrial respiratory enzymes in patients with parkin gene mutations. A significant decrease in the leukocyte complex I activity was found both in patients with parkin mutations (62.5%) and idiopathic PD (64.5%) compared with age-matched controls (P < 0.001). Complex IV activity was also decreased significantly in idiopathic PD patients (60%), but no difference was detected between controls and patients with parkin mutations.

DOI: 10.1002/mds.10695
PubMed: 15133818

Links to Exploration step

pubmed:15133818

Le document en format XML

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<nlm:affiliation>Department of Biochemistry, Hacettepe University, Faculty of Medicine, Ankara, Turkey.</nlm:affiliation>
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<name sortKey="Elibol, Bulent" sort="Elibol, Bulent" uniqKey="Elibol B" first="Bülent" last="Elibol">Bülent Elibol</name>
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<name sortKey="Dalmizrak, Ozlem" sort="Dalmizrak, Ozlem" uniqKey="Dalmizrak O" first="Ozlem" last="Dalmizrak">Ozlem Dalmizrak</name>
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<name sortKey="Kulaksiz, Gulnihal" sort="Kulaksiz, Gulnihal" uniqKey="Kulaksiz G" first="Gülnihal" last="Kulaksiz">Gülnihal Kulaksiz</name>
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<term>Electron Transport Complex IV (genetics)</term>
<term>Electron Transport Complex IV (metabolism)</term>
<term>Exons (genetics)</term>
<term>Female</term>
<term>Humans</term>
<term>Leukocytes (metabolism)</term>
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<term>Parkinson Disease (metabolism)</term>
<term>Point Mutation (genetics)</term>
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<div type="abstract" xml:lang="en">The parkin protein functions as a RING-type ubiquitin protein ligase. Considering the possibility that impaired ubiquitin-proteosomal system activity may impair antioxidant defenses and enhance oxidative stress, we have investigated the activity of mitochondrial respiratory enzymes in patients with parkin gene mutations. A significant decrease in the leukocyte complex I activity was found both in patients with parkin mutations (62.5%) and idiopathic PD (64.5%) compared with age-matched controls (P < 0.001). Complex IV activity was also decreased significantly in idiopathic PD patients (60%), but no difference was detected between controls and patients with parkin mutations.</div>
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