Efficacy of the superoxide dismutase mimetic tempol in animal hypertension models: a meta-analysis.

Abstract:

OBJECTIVE:Considering the growing body of evidence that indicates the contribution of superoxide anions (O2) and other reactive oxygen species (ROS) to the development of hypertension, we assessed whether animal models of hypertension have a benefic effect with tempol, a superoxide dismutase mimetic, to help augment the design of future studies. METHODS:Studies published between July 1998 and December 2012 on blood pressure (BP) in different hypertensive models were obtained after an electronic and manual search of PubMed. In-depth analyses of the methodological quality of the studies and the mean arterial pressure (MAP) changes after treatment with tempol were performed, as well as the subgroup analyses on the route of tempol delivery. RESULTS:Out of the 144 identified studies, 28 were included after screening. The data showed that tempol reduced MAP by computing the standardized mean difference with the value of 4.622 (95% confidence interval 3.24-5.99). The quality of studies included in the meta-analysis was category II; however, omission of details in the trials might have biased the results. There was substantial heterogeneity in the results with an I of 94.45%, which persisted after stratifying for the route of tempol delivery. CONCLUSION:In conclusion, this analysis shows that antioxidant treatment with tempol can reduce BP, suggesting that ROS plays a role in the pathogenesis of increased BP in the hypertension models used in the current research practice.

journal_name

J Hypertens

journal_title

Journal of hypertension

authors

Dornas WC,Silva M,Tavares R,de Lima WG,dos Santos RC,Pedrosa ML,Silva ME

doi

10.1097/HJH.0000000000000422

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

14-23

issue

1

eissn

0263-6352

issn

1473-5598

journal_volume

33

pub_type

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