Abstract
Defects in mitochondrial oxidative phosphorylation have been observed in numerous neurodegenerative disorders and are linked to bioenergetic crises leading to neuronal death. The distinct metabolic profile of neurons is predominantly oxidative, which is characterized by the oxidation of glucose or its metabolites in the mitochondria to produce ATP. This process involves the tricarboxylic acid cycle, electron transfer in the respiratory chain, and oxygen consumption. Therefore, measurement of oxygen consumption rates (OCR) can be accurately applied to assess the rate of mitochondrial respiration. In this chapter, we describe our optimized protocol for the assessment of OCR specifically in primary mouse cerebellar granule neurons (CGN). The protocol includes isolation and manipulation of mouse CGNs followed by real-time assessment of mitochondrial OCR using a Seahorse XFe96 extracellular flux analyzer.
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