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Comparative Study
. 1987 Oct;104(10):402-4.

[45Ca2+ and 3H-GABA transport in nerve endings separated from the cerebral cortex of rats with hypoparathyroidism]

[Article in Russian]
  • PMID: 3676451
Comparative Study

[45Ca2+ and 3H-GABA transport in nerve endings separated from the cerebral cortex of rats with hypoparathyroidism]

[Article in Russian]
A S Ter-Markosian et al. Biull Eksp Biol Med. 1987 Oct.

Abstract

Ca2+ blood serum level was reduced by 34.5% in rats with hypoparathyroidism (HPT) on the 7th-12th day after the damage of parathyroid glands. Synaptosomes isolated from the brain cortex of rats during this period accumulated in a normal medium more 45Ca2+ than synaptosomes from healthy animals. In potassium depolarization, control and experimental synaptosomes accumulated more 45Ca2+, however in HPT the increment in 45Ca2+ uptake in high potassium medium was less temperature-dependent. In normal medium 3H-GABA uptake and release by synaptosomes from the brain of rats with HPT slightly differed from those in the control. On the contrary, 3H-GABA release induced by synaptosome depolarization was depressed in HPT. It is suggested that nerve terminal excretory function disturbances contribute to increased excitability of the central nervous system in hypoparathyroidism.

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