Ca2+-uptake properties of two populations of mitochondria from normal and denervated rat soleus muscle
- PMID: 7044369
- PMCID: PMC1163590
- DOI: 10.1042/bj2000671
Ca2+-uptake properties of two populations of mitochondria from normal and denervated rat soleus muscle
Abstract
Ultraturrax- and Nagarse-released populations of mitochondria were characterized with respect to their Ca2+-uptake activities (i) by means of the indirect polarographic technique and (ii) directly by the 45Ca Ruthenium Red-quench method of Reed & Bygrave [(1974) Biochem. J. 140, 143-155]. The denervated-muscle subsarcolemmal and intermyofibrillar mitochondrial fractions displayed markedly decreased rates and capacities for Ca2+ uptake compared with their respective controls. The implications of these findings with respect to the process of cell necrosis are discussed.
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