糖皮質(zhì)激素對小膠質(zhì)細胞內(nèi)鈣的影響
[Abstract]:Objective To observe the effect of glucocorticoid on calcium in microglia and to explore its mechanism. Methods The dynamic changes of calcium concentration in BV-2 cells treated with hydrocortisone were observed by using Fluo3-AM as a calcium fluorescent dye and a laser confocal microscope in vitro. Results The levels of calcium in the cells of BV-2 were significantly increased in both hydrocortisone and positive control (P0.05). The real-time scanning showed that the calcium in the cells increased immediately, the peak value of about 15 s reached the peak at about 15 s, the decrease after about 10 s, and the recovery to the ground state at about 200 s. And this effect shows the consistency of the calcium effect with the nicotine-increasing cells. Glucocorticoid receptor antagonist RU486 could not cancel the effect of hydrocortisone on calcium in BV-2 cells (P0.05); while the 7niacin-type B-acetylcholine receptor (p7 nAChR) blocking agent, MLA, could antagonize the effect of hydrocortisone on calcium in BV-2 cells (P0.05). Conclusion Hydrocortisone has not only confirmed the non-genomic effect of the glucocorticoid, but also suggested that the glucocorticoid may be the endogenous ligand of 7 nAChR.
【作者單位】: 廣州醫(yī)科大學(xué)藥學(xué)院藥理教研室;
【基金】:廣東省科技計劃資助項目(No 2013B022000096) 廣東省自然科學(xué)基金資助項目(No 2016A030313568)
【分類號】:R96
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