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Science 23 April 1971:
Vol. 172. no. 3981, pp. 391 - 393
DOI: 10.1126/science.172.3981.391
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Articles

Preganglionic Stimulation Increases Calcium Uptake by Sympathetic Ganglia

M. P. Blaustein 1

1 Department of Physiology and Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110

Isolated superior cervical ganglia of rats accumulate more calcium during preganglionic stimulation than do unstimulated controls; uptake of calcium-45 is approximately doubled by stimulation of 12 impulses per second. The extra uptake is markedly reduced by a high concentration of magnesium, but not by mecamylamine hydrochloride or tetraethylammonium chloride, although all three agents eliminate the postsynaptic action potential. Uptake of calcium-45 is also greatly increased by a high external concentration of potassium.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Actomyosin-Like Protein in Brain: Actomyosin-like protein may function in the release of transmitter material at synaptic endings.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)