Oja SS, Saransaari P. Properties of Taurine Release in Glucose-Free Media in Hippocampal Slices from Developing and Adult Mice.
JOURNAL OF AMINO ACIDS 2015;
2015:254583. [PMID:
26347028 PMCID:
PMC4540997 DOI:
10.1155/2015/254583]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 07/21/2015] [Indexed: 11/20/2022]
Abstract
The release of preloaded [(3)H]taurine from hippocampal slices from developing 7-day-old and young adult 3-month-old mice was studied in a superfusion system in the absence of glucose. These hypoglycemic conditions enhanced the release at both ages, the effect being markedly greater in developing mice. A depolarizing K(+) concentration accentuated the release, which indicates that it was partially mediated by exocytosis. The anion channel blockers were inhibitory, witnessing the contribution of ion channels. NO-generating agents fomented the release as a sign of the participation of excitatory amino acid receptors. The other second messenger systems were apparently less efficient. The much greater taurine release could be a reason for the well-known greater tolerance of developing nervous tissue to lack of glucose.
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