HmSD activity of PC-3M cells was significantly down-reg ulated when cell apoptosis was induced by sodium butyrate and high correlation b etween hmSD activity and apoptosis rate was observed.

• 丁酸钠诱导PC - 3M细胞凋亡的同时显著下调hmSD的活性,凋亡率与hmSD活性呈负相关。