Therapeutic Effect of Ilex hainanensis Merr. Extract on Essential Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

With a rapidly aging population, the prevalence of hypertension in adults continues to rise, placing a substantial and escalating social and economic burden. Ilex hainanensis Merr. is commonly used as a folk remedy for treating hypertension, dyslipidemia, and inflammation in China. This systematic r...

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Main Authors: Xiaochen Yang, Guoyan Yang, Weina Li, Yun Zhang, Jie Wang
Format: Article
Language:English
Published: Frontiers Media S.A. 2018-05-01
Series:Frontiers in Pharmacology
Subjects:
Online Access:http://journal.frontiersin.org/article/10.3389/fphar.2018.00424/full
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author Xiaochen Yang
Guoyan Yang
Weina Li
Yun Zhang
Jie Wang
author_facet Xiaochen Yang
Guoyan Yang
Weina Li
Yun Zhang
Jie Wang
author_sort Xiaochen Yang
collection DOAJ
description With a rapidly aging population, the prevalence of hypertension in adults continues to rise, placing a substantial and escalating social and economic burden. Ilex hainanensis Merr. is commonly used as a folk remedy for treating hypertension, dyslipidemia, and inflammation in China. This systematic review aims to evaluate current evidence for the therapeutic effect of Ilex hainanensis Merr. extract (EIH) on essential hypertension. Six electronic databases (Pubmed, MEDLINE, The Cochrane Central Register of Controlled Trials, Chinese Scientific Journals Database, Wanfang and CNKI) were searched to identify eligible randomized controlled trials (RCTs) relevant to EIH on essential hypertension up to Jan 2018. Six RCTs including 772 participants met eligibility criteria. Methodological quality of the trials was generally low. Meta-analysis showed that EIH demonstrated a beneficial effect for lowering systolic and diastolic blood pressure (SBP/DBP), left ventricular mass (LVM) in participants with essential hypertension. There was no significant difference between EIH and antihypertensive drugs in SBP (WMD: −0.44 [−2.30, 1.43]; P = 0.65), DBP (WMD: WMD: −0.02 [−1.13, 1.09]; P = 0.98) and LVM (WMD: −1.36 [−4.99, 2.26]; P = 0.46). Moreover, one trial showed that EIH combined with antihypertensive drugs was more effective in lowering blood pressure than those antihypertensive drugs used alone. However, the findings were limited by the small sample sizes, duration and low methodological quality of the trials. This is the first systematic review of EIH on essential hypertension. More rigorous RCTs with high quality are still needed to prove the effectiveness and safety of EIH and its preparations for essential hypertension.
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spelling doaj.art-1be7bb0f193641cdab3c953c17f9df992022-12-21T18:33:31ZengFrontiers Media S.A.Frontiers in Pharmacology1663-98122018-05-01910.3389/fphar.2018.00424368551Therapeutic Effect of Ilex hainanensis Merr. Extract on Essential Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled TrialsXiaochen Yang0Guoyan Yang1Weina Li2Yun Zhang3Jie Wang4Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaCentre for Complementary Medicine Research, University of Western Sydney, Sydney, NSW, AustraliaDepartment of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaDepartment of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaDepartment of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaWith a rapidly aging population, the prevalence of hypertension in adults continues to rise, placing a substantial and escalating social and economic burden. Ilex hainanensis Merr. is commonly used as a folk remedy for treating hypertension, dyslipidemia, and inflammation in China. This systematic review aims to evaluate current evidence for the therapeutic effect of Ilex hainanensis Merr. extract (EIH) on essential hypertension. Six electronic databases (Pubmed, MEDLINE, The Cochrane Central Register of Controlled Trials, Chinese Scientific Journals Database, Wanfang and CNKI) were searched to identify eligible randomized controlled trials (RCTs) relevant to EIH on essential hypertension up to Jan 2018. Six RCTs including 772 participants met eligibility criteria. Methodological quality of the trials was generally low. Meta-analysis showed that EIH demonstrated a beneficial effect for lowering systolic and diastolic blood pressure (SBP/DBP), left ventricular mass (LVM) in participants with essential hypertension. There was no significant difference between EIH and antihypertensive drugs in SBP (WMD: −0.44 [−2.30, 1.43]; P = 0.65), DBP (WMD: WMD: −0.02 [−1.13, 1.09]; P = 0.98) and LVM (WMD: −1.36 [−4.99, 2.26]; P = 0.46). Moreover, one trial showed that EIH combined with antihypertensive drugs was more effective in lowering blood pressure than those antihypertensive drugs used alone. However, the findings were limited by the small sample sizes, duration and low methodological quality of the trials. This is the first systematic review of EIH on essential hypertension. More rigorous RCTs with high quality are still needed to prove the effectiveness and safety of EIH and its preparations for essential hypertension.http://journal.frontiersin.org/article/10.3389/fphar.2018.00424/fullIlex hainanensis Merr.hypertensiontraditional Chinese medicinesystematic reviewmeta-analysis
spellingShingle Xiaochen Yang
Guoyan Yang
Weina Li
Yun Zhang
Jie Wang
Therapeutic Effect of Ilex hainanensis Merr. Extract on Essential Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Frontiers in Pharmacology
Ilex hainanensis Merr.
hypertension
traditional Chinese medicine
systematic review
meta-analysis
title Therapeutic Effect of Ilex hainanensis Merr. Extract on Essential Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_full Therapeutic Effect of Ilex hainanensis Merr. Extract on Essential Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_fullStr Therapeutic Effect of Ilex hainanensis Merr. Extract on Essential Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_full_unstemmed Therapeutic Effect of Ilex hainanensis Merr. Extract on Essential Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_short Therapeutic Effect of Ilex hainanensis Merr. Extract on Essential Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
title_sort therapeutic effect of ilex hainanensis merr extract on essential hypertension a systematic review and meta analysis of randomized controlled trials
topic Ilex hainanensis Merr.
hypertension
traditional Chinese medicine
systematic review
meta-analysis
url http://journal.frontiersin.org/article/10.3389/fphar.2018.00424/full
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