期刊
NEUROCHEMICAL RESEARCH
卷 36, 期 6, 页码 1101-1107出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11064-011-0453-y
关键词
Pristanic acid; Energy metabolism; Peroxisomal disease; Rat brain
资金
- CNPq
- PROPESq/UFRGS
- FAPERGS
- PRONEX
- FINEP Rede Instituto Brasileiro de Neurociencia (IBN-Net) [01.06.0842-00]
- Instituto Nacional de Ciencia e Tecnologia em Excitotoxicidade e Neuroprotecao (INCT-EN)
Pristanic acid (Prist) accumulates in some peroxisomal disorders characterized by neurologic dysfunction and brain abnormalities. The present work investigated the in vitro effects of Prist on important parameters of energy metabolism in brain cortex of young rats. CO2 production from labeled acetate and the activities of the respiratory chain complexes I-IV, creatine kinase and synaptic Na+, K+-ATPase were measured. Prist decreased CO2 production and the activities of complexes I, II and II-III. Prist also reduced Na+, K+-ATPase activity, but did not affect the activity of creatine kinase. Considering the importance of the citric acid cycle and the electron flow through the respiratory chain for brain energy production and of Na+, K+-ATPase for the maintenance of membrane potential, the present data indicate that Prist compromises brain bioenergetics and neurotransmission. It is presumed that these pathomechanisms may be involved in the neurological damage found in patients affected by disorders in which Prist accumulates.
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