期刊
JOURNAL OF PHARMACOLOGICAL SCIENCES
卷 105, 期 2, 页码 211-214出版社
JAPANESE PHARMACOLOGICAL SOC
DOI: 10.1254/jphs.SCZ070901
关键词
theanine; focal cerebral ischemia; gamma-aminobutyric acid(A) (GABA(A)) receptor
We investigated the involvement of gamma-aminobutyric acid(A) (GABA(A)) receptors in the neuroprotective effect of gamma-glutamylethylamide (theanine), a component of Japanese green tea, following a 4-h middle cerebral artery (MCA) occlusion in mice. Theanine (1 mg/kg) reduced the size of the cerebral infarct and alterations of NeuN, GFAP, and Iba 1 expression levels at 24 h after MCA occlusion. This neuroprotective effect of theanine was prevented by bicuculline (GABA(A)-receptor antagonist, 10 mg/kg) but not 3-mercaptopropionic acid (glutamate decarboxylase inhibitor). These results suggest that the neuroprotective effect of theanine is mediated, at least in part, by GABA(A) receptors.
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