Summary: To determine the (tttta) n repeat polymorphisms at the promoter region of CYP11α gene, and study its linkage to hyperandrogenism of polycystic ovary syndrome (PCOS) in Chinese women, a case-control study w...Summary: To determine the (tttta) n repeat polymorphisms at the promoter region of CYP11α gene, and study its linkage to hyperandrogenism of polycystic ovary syndrome (PCOS) in Chinese women, a case-control study was conducted in the Reproductive Medical Center of the Second Affiliated Hospital of Zhengzhou University (Zhengzhou, China). 96 PCOS patients and 78 healthy control women were included. CYP11α (tttta) n repeat-polymorphism genotyping analysis was performed by using polymerase chain reaction (PCR). Serum pituitary hormone and total testosterone levels were measured by ELISA. 4 different CYP11α (tttta) n allelles were identified, corresponding to 4-, 6-, 8-, and 9-repeat-unit alleles. The frequency and distribution of these alleles are 0.16, 0.33, 0.38, and 0.13 respectively in PCOS patients, as compared with 0.20, 0.34, 0.35, and 0.11 respectively in healthy controls. There were no significant differences between these two groups. Moreover, no correlation between the polymorphism of CYP11α gene and serum testosterone level of patients with PCOS and controls was observed. It is concluded that microsatellite polymorphism (tttta) n of gene CYP11α exists in Chinese women and the polymorphism of CYP11α gene does not play an important role in the pathogenesis of Chinese patients with PCOS, especially in patients with hyperandrogenism.展开更多
以黄山毛峰为原料,采用实时荧光定量反转录聚合酶链式反应法和蛋白免疫印迹法研究其茶多酚提取物对肝药酶Cyp3a11及孕烷X受体(pregnane X receptor,PXR)的mRNA和蛋白表达影响,在此基础上采用瞬时共转染报告基因技术进一步验证是否通过PX...以黄山毛峰为原料,采用实时荧光定量反转录聚合酶链式反应法和蛋白免疫印迹法研究其茶多酚提取物对肝药酶Cyp3a11及孕烷X受体(pregnane X receptor,PXR)的mRNA和蛋白表达影响,在此基础上采用瞬时共转染报告基因技术进一步验证是否通过PXR实现对Cyp3a11表达调控。结果表明:黄山毛峰茶多酚提取物各剂量组(75、150、300 mg/(kg·d))均能显著调控小鼠肝Cyp3a11、PXR m RNA及其蛋白表达;报告基因实验结果显示,100、200、300μg/m L黄山毛峰茶多酚提取物经PXR通路使细胞色素P4503A4基因荧光素酶活力分别增加(3.86±0.05)、(4.82±0.72)、(5.38±0.11)倍。研究表明黄山毛峰茶多酚提取物可激活PXR通路调控肝药酶Cyp3a11的表达。展开更多
基金This project was supported by a grant of Henan Provincial Bureau of Science and Technology (No. 0424410097).
文摘Summary: To determine the (tttta) n repeat polymorphisms at the promoter region of CYP11α gene, and study its linkage to hyperandrogenism of polycystic ovary syndrome (PCOS) in Chinese women, a case-control study was conducted in the Reproductive Medical Center of the Second Affiliated Hospital of Zhengzhou University (Zhengzhou, China). 96 PCOS patients and 78 healthy control women were included. CYP11α (tttta) n repeat-polymorphism genotyping analysis was performed by using polymerase chain reaction (PCR). Serum pituitary hormone and total testosterone levels were measured by ELISA. 4 different CYP11α (tttta) n allelles were identified, corresponding to 4-, 6-, 8-, and 9-repeat-unit alleles. The frequency and distribution of these alleles are 0.16, 0.33, 0.38, and 0.13 respectively in PCOS patients, as compared with 0.20, 0.34, 0.35, and 0.11 respectively in healthy controls. There were no significant differences between these two groups. Moreover, no correlation between the polymorphism of CYP11α gene and serum testosterone level of patients with PCOS and controls was observed. It is concluded that microsatellite polymorphism (tttta) n of gene CYP11α exists in Chinese women and the polymorphism of CYP11α gene does not play an important role in the pathogenesis of Chinese patients with PCOS, especially in patients with hyperandrogenism.
文摘以黄山毛峰为原料,采用实时荧光定量反转录聚合酶链式反应法和蛋白免疫印迹法研究其茶多酚提取物对肝药酶Cyp3a11及孕烷X受体(pregnane X receptor,PXR)的mRNA和蛋白表达影响,在此基础上采用瞬时共转染报告基因技术进一步验证是否通过PXR实现对Cyp3a11表达调控。结果表明:黄山毛峰茶多酚提取物各剂量组(75、150、300 mg/(kg·d))均能显著调控小鼠肝Cyp3a11、PXR m RNA及其蛋白表达;报告基因实验结果显示,100、200、300μg/m L黄山毛峰茶多酚提取物经PXR通路使细胞色素P4503A4基因荧光素酶活力分别增加(3.86±0.05)、(4.82±0.72)、(5.38±0.11)倍。研究表明黄山毛峰茶多酚提取物可激活PXR通路调控肝药酶Cyp3a11的表达。
