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Obj ective To investigate the mechanism of secreted frizzled-related Protein 5 ( sFRP5) expression in cardiomyocyte hypertrophy.Methods In vivo experiment, neonatal rat ventricular myocytes were exposed to Ang Ⅱ(10-6 mmol/L, 48 h).Telmisartan, Y27632, PD98059,SB203580 and SP600125 were used to block angiotensin type 1 receptor( AT1R) , Rho/ROCK, p38 MAPK, ERK1/2 and JNK pathway, respective-ly.Western blot was applied to determine the expressions of sFRP5, ROCK1, ROCK2, total MYPT1, p-MYPT1.RT-PCR was used to determine sFRP5 expression.Results There was significant inhibition of sFRP5 expression when treated with Y37632 and SP699125, but less with SB203580 and PD98059 in AngⅡ-induced cardiomyocytes.Moreover, telmisartan down-regulated the expression of ROCK1, but no effect on the expression of ROCK2.Conclusions The expression of sFRP5 is up-regulated mainly by Rho/ROCK1/JNK pathway in cardiomyocyte hypertrophy induced by Ang Ⅱ.
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Objective: To investigate the expression and effect of secreted frizzled-related protein 5 (sFRP5) in rat's cardiomyocyte hypertrophy in vitro. Methods: Neonatal rat's ventricular myocytes were cultured in vitro, cardiomyocyte hypertrophy was induced by Ang Ⅱ. Telmisartan and PD123319 were used to block angiotensin type 1 receptor (AT1R) and angiotensin type 2 receptor (AT2R) respectively. RT-PCR and Western-blot analysis were conducted to examine the expressions of sFRP5, BNP and TNF-α. Results: sFRP5 was expressed in cardiomyocytes. The mRNA and protein expressions of sFRP5, protein expression of BNP were increased by prolonged time of AngⅡ treatment, the maximum expression was observed at 48 h, P<0.05. Compared with Ang Ⅱ (10-6mol/L) group, the mRNA and protein expressions of sFRP5 in Ang Ⅱ +Telmisartan (10 μmol/L) group were decreased, P<0.05, those expressions were similar in Ang Ⅱ +PD123319 (10 μmol/L) group, P>0.05. Compared with AngⅡ (10-6 mo1/L)+sFRP5 (0 ng/ml) group, protein expressions of BNP and TNF-α were decreased inAng Ⅱ (10-6 mo1/L)+sFRP5 (10 ng/ml) group and in Ang Ⅱ (10-6 mo1/L)+sFRP5 (100 ng/ml) group respectively, P<0.05. Conclusion: For in vitro process of Ang Ⅱ induced neonatal rat's cardiomyocyte hypertrophy, using Ang Ⅱ receptor could up-regulate sFRP5 expression and sFRP5 plays an important role in cardiomyocyte hypertrophy.
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<p><b>OBJECTIVE</b>To investigate the efficacy of the Chinese medicine Huzhangdanshenyin on male immune infertility, and provide an effective therapy for this disease.</p><p><b>METHODS</b>Ninety men with immune infertility were selected as the research subjects and randomly divided into two groups, 60 in the treatment group, treated by Huzhangdanshenyin, and the other 30 in the control, treated by prednisone, both for 3 months. The improvement of clinical symptoms, immunologic indexes (antisperm antibodies in serum and seminal plasma) and sperm indexes (semen liquefied duration, motility, viability, density and abnormal morphology rate) were observed and the results analyzed.</p><p><b>RESULTS</b>The total antisperm antibody reversing ratio of the treatment group was higher than that of the control (P < 0.01), especially the serum antisperm antibody reversing ratio. There were significant differences in the clinical cure rate and total validity rate between the treatment group and the control (P < 0.01). After the treatment, the markers of the clinical symptoms (P < 0.01), especially the serum antisperm antibody reversing ratio. There were significant differences in the clinical cure rate and total validity rate between the treatment group and the control (P < 0.01). After the treatment, the markers of the clinical symptoms were lower (P < 0.01), and the improvement of the clinical symptoms was better in the treatment group than in the control (P < 0.01), especially the symptoms of pain in the back and knees, distending and bearing-down sensation of the perineum and testis, hypersexuality and topalgias. Compared with pre-treatment, sperm motility and viability of the treatment group significantly improved (P < 0.01), and so did sperm density (P < 0.05). However, there were no significant differences in sperm density, semen liquefied duration, abnormal morphology rate and pH (P > 0.05) before and after the treatment.</p><p><b>CONCLUSION</b>The Chinese medicine Huzhangdanshenyin works more effectively than prednisone in the treatment of male immune infertility. It could improve the antisperm antibody reversing ratio, clinical symptoms and signs and ameliorate sperm indexes with no obvious advierse effects.</p>