Na+ , K+ -ATPase participates in the protective mechanism of rat cerebral ischemia-reperfusion through the interaction with glutamate transporter-1.

Abstract:

:The aim of this study was to investigate the mechanism of Na+ , K+ -ATPase (NKA) involved in low concentration of ouabain (Oua, activating NKA)-induced protection of rat cerebral ischemia-reperfusion injury. The 2,3,5-triphenyltetrazolium chloride staining and neurological deficit scores were performed to evaluate rat cerebral injury degree respectively at 2 h, 6 h, 1 d and 3 d after reperfusion of MCAO 2 h in rats. NKA α1/α2 subunits and GLT-1 protein expression were investigated by Western blotting. The cerebral infarct volume ratio was evidently decreased in Oua group vs MCAO/R group at 1 d and 3 d after reperfusion of 2 h MCAO in rats (*p<0.05). Moreover, NDS were not significantly different (p>0.05). NKA α1 was decreased at 6 h and 1 d after reperfusion of 2 h MCAO in rats, and was improved in Oua group. However, NKA α1 and α2 were increased at 3 d after reperfusion of 2 h MCAO in rats, and was decreased in Oua group. GLT-1 was decreased at 6 h, 1 d and 3 d after reperfusion of 2 h MCAO in rats, and was improved in Oua group. These data indicated that low concentration of Oua could improve MCAO/R injury via NKA α1/α2 and GLT-1, then probably increasing GLT-1 function and promoting Glu transport and absorption, which could be useful to determine potential therapeutic strategies for patients with stroke.

journal_name

Fundam Clin Pharmacol

authors

Li LL,Ke XY,Jiang C,Qin SQ,Liu YY,Xian XH,Liu LZ,He JC,Chen YM,An HF,Sun N,Hu YH,Wang Y,Zhang LN,Lu QY

doi

10.1111/fcp.12652

subject

Has Abstract

pub_date

2021-01-22 00:00:00

eissn

0767-3981

issn

1472-8206

pub_type

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