Objective To systematically evaluate the effectiveness and safety of renal sympathetic denervation (RSD) for treatment of patients with resistant hypertension.Methods English and Chinese literatures of controlled clinical trials on RSD in treatment of resistant hypertension were searched from the Cochrane Library,PubMed,Web of Science,Wanfang Database and CNKI up to February 2013.Metaanalysis was performed with the selected studies by using software Rev.Man 5.0.Results Seven studies involving 354 cases with RSD and 146 controls were included for analysis.Compared with control group,RSD significantly lower both systolic and diastolic blood pressure in patients with resistant hypertension (systolic,1 month:MD =-18.04,95％ CI:-19.94--16.14,P ＜0.01; 3 months:MD =0.01,95％CI:-28.10--17.98,P＜0.01; 6 months:MD=-25.59,95％CI:-34.08--17.11,P＜0.01; diastolic,1 month:MD=-7.53,95％ CI:-8.60--6.45,P＜0.01; 3 months:MD =0.01,95％CI:-12.5--4.47,P ＜ 0.01; 6 months:MD =-10.54,95％ CI:-16.44--4.63,P =0.000 5).In addition,there was no significant difference in adverse reactions between RSD treatment group and control group (OR =1.13,95 ％ CI:0.34-3.76,P =0.84).Conclusions Renal sympathetic denervation can effectively reduce blood pressure in patients with resistant hypertension 1-6 months postoperatively,without increase of adverse reactions.The long-term efficacy and safety need to be further observed.

Objective:To investigate the relationship between the expression patterns of SMG family members and aortic dissection by comparing the expression levels of SMGs in aortic wall of patients with Stanford type A aortic dissection(AD) and normal controls.Methods:The aortic wall samples were collected from 31 normal controls and 65 patients with Stanford type A aortic dissection. The mRNA levels of SMGs in the aortic wall were quantified by RT-PCR, and the correlations between SMGs and aortic diameters of patients with aortic dissection were analyzed.Results:The results of RT-PCR showed that compared with normal aortic wall, the mRNA levels of SMG3(0.642±0.529 vs. 1.126±0.858, P=0.023), SMG6(0.737±0.652 vs. 1.877±1.902, P=0.005), and SMG7(0.624±0.449 vs. 1.339±0.866, P=0.00067) were obviously increased in aortic wall of patients with aortic dissection, while comparable mRNA levels of SMG1, SMG2, SMG4, SMG5, SMG8 and SMG9 were detected between these two groups. In addition, there was no significant correlation between the expression levels of SMG3, SMG6, SMG7 and aortic diameters. Conclusion:The expression levels of SMG3, SMG6 and SMG7mRNA were significantly increased in patients with aortic dissection, suggesting that they may promote the occurrence of aortic dissection, and targeting SMG family members expected to a novel strategy for the prevention and treatment of aortic dissection.