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Objective To investigate the effect of Nourishing Yin and Nonifying Yang sequential therapy (NYNYST )com-bined with western medicine on expression levels of Smad2 ,Smad3 ,Smad7 mRNA in rats with diminished ovarian reserve (DOR).Methods Totally 40 female rats were randomly divided into 5 groups ,the normal control group ,the model group ,the western medicine group ,the NYNYST group and the combination group(western medicine combined with NYNYST ) ,8 in each group. The DOR model was established through orally administering tripterygium pill for continuous 2 weeks. The normal con-trol group and the model group were administered with saline for 10 days. The western medicine group was treated with hor-mone replacement therapy(HRT ) and ovarian stimulation. The NYNYST group was administered with Nourishing Yin herbs in proestrus and Nonifying Yang herbs in late estrus and the combination group was administered with combination of Chinese herb and western drugs for 10 days ,with the same dose in the former two groups.Serum levels of FSH ,LH ,E2 ,anti-Müllerian hormone(AMH) ,Transforming growth factor beta 1(TGF-β1)and Inhibin B(INHB)were measured by ELISA.Changes of Smad2 ,Smad3 ,Smad7 mRNA in ovaries were detected by real-time PCR.Results Compared with the model group ,the serum levels of FSH ,LH were decreased significantly in western medicine group ,NYNYST group and combination group(P＜0.01) , the serum levels of E2 ,AMH ,TGF-β1 and INHB increased in the rats of the treatment group(P＜0.05 ,P＜0.01) ,and efficacy of the combination group was significantly superior to that of the western medicine group (P＜0.01 ,P＜0.05);compared with the model group ,Smad2 mRNA increased significantly in NYNYST group and combination group ,Smad3 mRNA increased sig- nificantly in combination group(P＜0.01) ,the efficacy of combination group was superior to that of the western medicine group (P＜0.05);compared with the model group ,Smad7 mRNA of treatment groups was decreased significantly (P＜0.01).Conclu-sion NYTYST combined with western medicine can improve the function of ovaries by up-regulating the expression of Smad2 , Smad3 mRNA and down-regulating the expression of Smad7 mRNA in DOR rats.
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Objective To investigate relationship between the expressions of TGF-β1 mRNA, Smad7 mRNA and ki-67 mRNA and the clinicopathologic characteristics in gastric carcinoma. Methods 60 cases with gastric carcinoma tissue and 20 cases with normal gastric tissue, which were surgically removed and certified by pathology, were collected. The expressions of TGF-β1 mRNA, Smad7 mRNA and ki-67 mRNA were detected by RT-PCR in normal and carcinomatous gastric tissue. Results The expressions of TGF-β1 mRNA, Smad7 mRNA and ki-67 mRNA in normal gastric tissue were lower than those in carcinomatous gastric tissue (P < 0.05). The expressions of TGF-β1 mRNA, Smad7 mRNA and ki-67 mRNA in gastric carcinoma which were well differentiated and moderately differentiated were significantly lower than those in poorly differentiated gastric carcinoma (P<0.05). The expressions of TGF-β1 mRNA, Smad7 mRNA and ki-67 mRNA in gastric carcinoma without lymph node metastasis were lower than those in gastric carcinoma with lymph node metastasis. The expressions of TGF-β1 mRNA, Smad7 mRNA and ki-67 mRNA in Ⅰ+Ⅱ stage were lower those in Ⅲ+Ⅳ stage (P < 0.05). Linear correlation showed there were positive correlations among TGF-β1 mRNA, Smad7 mRNA and ki-67 mRNA in gastric carcinoma. Conclusions The canonical TGF-β1 Smad7 and Ki-67 mRNA play a role in the carcinogenesis, development, differentiation of gastric carcinoma.
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Objective Through studying the effect of Tangnaikang (TNK) on the expression of Smad 2, 3, 7 mRNA of human renal tubular epithelial cells HK-2 induced by transforming growth factor-β1 (TGF-β1), to explore the mechanism of TNK on prevention and treatment of renal fibrosis. Methods The HK-2 cells were cultured by DMEM/F12 (1∶1) with 10% fetal bovine serum and divided into control group, TGF-β1 group (TGF-β1 10 ng/mL), blank serum control group (TGF-β1 10 ng/mL + 10% animal serum), TNK drug-containing serum therapy groups (TGF-β1 10 ng/mL + 5% TNK or + 10% TNK or + 20% TNK). After 24 h, the expression of Smad 2, 3, 7 mRNA were tested by fluorescence quantitatiye PCR assay. Results After the HK-2 cells were induced by TGF-β1, the expression of Smad 2, 3 mRNA were increased and the expression of Smad 7 mRNA was decreased compared with the control group (P<0.05). The expression of Smad 2, 3 mRNA were decreased and the expression of Smad 7 mRNA was increased in TNK drug-containing serum therapy groups compared with TGF-β1 group (P<0.05), but blank serum control group had no such effect. Conclution TNK could prevent the development of renal fibrosis to some extent through regulating the expression of Smads signaling pathway.