Impact of renal denervation on expression of renalase and tyrosine hydroxylase in adult rats with spontaneous hypertension / 中南大学学报(医学版)

OBJECTIVE@#To investigate the impact of renal denervation on the blood pressure, plasma renalase content and expression of renalase and tyrosine hydroxylase (TH) in the idney of spontaneous hypertensive (SH) rats and to explore the role of renal denervation in lowering the blood pressure.@*METHODS@#SH rats were randomly assigned into a baseline group, a surgery (renal denervation) group, a sham group and a control group (n=48). WKY rats matched in age (n=12) served as a baseline control group. All rats were housed until 12 weeks old. Then, the rats in the baseline group and the WKY group were sacrificed whose blood and kidney were collected for examination. In the renal denervation group, the sham group and the control group, the blood pressure was monitored continuously. One week and 6 weeks after the renal denervation, 6 rats in each group were sacrificed whose blood and kidney were collected. ELISA was employed to measure the plasma renalase and Western blot assay done to detect the expression of TH and renalase in the kidney.@*RESULTS@#Compared with WKY rats, blood pressure significantly increased and TH protein expression markedly elevated (P0.05). No pronounced differences in the above variables were found between the sham group and the control group at any time point (P>0.05).@*CONCLUSION@#Renal denervation can lower the blood pressure, which may attribute to the suppression of sympathetic nerves, increase in plasma renalase content and renalase expression in the kidney.

Research progress with renalase and cardiovascular disease / 中南大学学报(医学版)

Renalase, a novel amine oxidase, is secreted by kidney. It regulates heart function and blood pressure by degrading catecholamines. Hormones secreted by the kidney are associated with cardiovascular disease. Renalase, as a new biomarker of heart and kidney functional correlation, can lower blood pressure, protect ischemic heart muscle, improve heart function and degrade catecholamine.

Epidemiological status and risk factors for hypertensive disorder complicating pregnancy in a district in Changsha / 中南大学学报(医学版)

OBJECTIVE@#To comprehend the epidemiological status and risk factors in hypertensive disorder complicating pregnancy (HDCP) in a district in Changsha, and to provide epidemiological evidence for early intervention of HDCP.@*METHODS@#A total of 2 148 pregnant women in a district in Changsha from 2008 to 2009 were retrospectively analyzed and the related factors were evaluated by multivariate unconditional logistic analysis.@*RESULTS@#The incidence of HDCP was 5.21% from 2008 to 2009. Multivariate unconditional logistic regression analysis showed that age (>35 years old)(OR=6.440,95%CI:2.987-13.884), body mass index (BMI) before pregnancy (OR=2.180,95%CI:1.619-2.936), and history of diabetes or kidney disease (OR=14.221,95%CI: 3.990-50.684) were risk factors for HDCP.@*CONCLUSION@#Age, BMI before pregnancy, and history of diabetes or kidney disease are risk factors for HDCP, while gravidity, parity, number of abortion and multiple gestation pregnancy have no obvious correlation with HDCP.