中文摘要：

目的：研究1,3-二氯-2-丙醇（1,3-DCP）对体外睾丸间质细胞活性及孕酮合成的影响。方法：分别用0.5、1、2、4、6mmol/L浓度的1,3-DCP作用R2C细胞48h,利用MTT法获得1,3-DCP对R2C细胞的IC25、IC50以及IC75。选取以上3种不同浓度的1,3-DCP作用细胞4h或24h,通过单细胞电泳法（SCGE）检测其作用4h时对DNA损伤的程度;通过放射免疫法（RIA）检测4h或24h处理时对孕酮合成的影响。结果：与对照组相比,1,3-DCP能抑制R2C细胞的增殖,其IC25、IC50、IC75分别为（1.161±0.046）、（1.897±0.018）、（3.100±0.040）mmol/L;作用4h对R2C细胞DNA有损伤作用;各浓度组作用4h或24h后与对照组相比均能降低孕酮的合成。结论：1,3-DCP能抑制R2C的活性,影响细胞孕酮的合成。

英文摘要：

Objective： To explore the effect of 1,3-dichloro-2-propanol（1,3-DCP） on cell growth and progesterone biosynthesis in R2C mouse leydig cells.Methods： R2C cells were exposed to 0.5,1,2,4 mmol/L,and 6 mmol/L 1,3-DCP for 48 h,different concentrations（IC25,IC50and IC75） of 1,3-DCP were elected by MTT assay.R2C cells were stimulated by three concentrations for 4 h or 24 h,respectively.The damage of DNA in R2C cells was investigated by single cell gel electrophoresis（SCGE）.Progesterone level in supernatant of cell culture medium was measured by radioimmunoassay（RIA）.Results： 1,3-DCP could inhibit cell growth,and IC25,IC50and IC75values were（1.161 ± 0.046）,（1.897 ± 0.018） mmol/L and（3.100 ± 0.040） mmol/L.In comparison with the control group,the damage of DNA were obviously higher in three concentrations of 1,3-DCP for 4 h,and the progesterone level were also obviously lower in three concentrations of 1,3-DCP for 4 h or 24 h.Conclusion： 1,3-DCP can directly affect cell growth and the progesterone synthesis of R2C cells.