Effect of crocin on intracellular calcium concentration in cultured bovine aortic smooth muscle cells / 药学学报

ABSTRACT

<p><b>AIM</b>To study the effect of crocin on intracellular calcium concentration ([Ca2+]i) in cultured bovine aortic smooth muscle cells (BASMCs).</p><p><b>METHODS</b>Cells were loaded with fluorescence probe Fluo-3/AM and [Ca2+]i was measured by laser scanning confocal microscope (LSCM).</p><p><b>RESULTS</b>In the presence or absence of extracellular Ca2+, crocin (1 x 10(-8), 1 x 10(-7), 1 x 10(-6) mol x L(-1)) concentration-dependently inhibited the [Ca2+]i elevation induced by 1 x 10(-2) mol x L(-1) H2O2 (for the former, the inhibition rates were 34.1%, 57.1% and 74.3%, while for the latter were 26.2%, 32.1%, 50.0%). In the absence of extracellular Ca2+, crocin (1 x 10(-8), 1 x 10(-7), 1 x 10(-6) mol x L(-1)) could inhibit the [Ca2+]i elevation induced by 70 mmol x L(-1) CHCl3, the inhibition rates were 27.8%, 27.8% and 50.0% respectively.</p><p><b>CONCLUSION</b>Crocin could inhibit the extracellular Ca2+ influx and release of intracellular Ca2+ stores in endoplasmic reticulum.</p>