Abstract
We report reversible Ca2+‐induced Ca2+ release from mitochondria, which takes the form of Ca2+ spikes. Mitochondrial Ca2+ spiking is an all‐or‐none process with a threshold dependence on both the frequency and the amplitude of the Ca2+ pulses used as stimuli. This spiking relies on the transient operation of the mitochondrial permeability transition pore, and is initiated — in a threshold‐dependent manner — with inositol‐triphosphate‐mediated Ca2+ responses in permeabilized cells. Evidence that mitochondrial Ca2+‐induced Ca2+ release contributes to inositol‐triphosphate‐mediated Ca2+ responses in intact cells is also reported.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 25, 2002, 3:40 a.m.) |
Deposited | 1 year, 11 months ago (Sept. 16, 2023, 1:58 p.m.) |
Indexed | 2 months ago (June 27, 2025, 6:35 a.m.) |
Issued | 31 years, 1 month ago (July 11, 1994) |
Published | 31 years, 1 month ago (July 11, 1994) |
Published Online | 23 years, 10 months ago (Oct. 18, 2001) |
Published Print | 31 years, 1 month ago (July 11, 1994) |
@article{Ichas_1994, title={Mitochondrial calcium spiking: A transduction mechanism based on calcium‐induced permeability transition involved in cell calcium signalling}, volume={348}, ISSN={1873-3468}, url={http://dx.doi.org/10.1016/0014-5793(94)00615-6}, DOI={10.1016/0014-5793(94)00615-6}, number={2}, journal={FEBS Letters}, publisher={Wiley}, author={Ichas, François and Jouaville, Laurence S. and Sidash, Sergueï S. and Mazat, Jean-Pierre and Holmuhamedov, Ekhson L.}, year={1994}, month=jul, pages={211–215} }