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Saturday 21 November 2015

Traditional herbs: a remedy for cardiovascular disorders

Available online 10 November 2015

Abstract

Background

Medicinal plants have been used in patients with congestive heart failure, systolic hypertension, angina pectoris, atherosclerosis, cerebral insufficiency, venous insufficiency and arrhythmia since centuries. A recent increase in the popularity of alternative medicine and natural products has revived interest in traditional remedies that have been used for the treatment of cardiovascular diseases.

Aim

The purpose of this review is to provide updated, comprehensive and categorized information on the history and traditional uses of some herbal medicines that affect the cardiovascular system in order to explore their therapeutic potential and evaluate future research opportunities.

Methods

Systematic literature searches were carried out and the available information on various medicinal plants traditionally used for cardiovascular disorders was collected via electronic search (using Pubmed, SciFinder, Scirus, GoogleScholar, JCCC@INSTIRC and Web of Science) and a library search for articles published in peer-reviewed journals. No restrictions regarding the language of publication were imposed.

Results

This article highlights the cardiovascular effects of four potent traditional botanicals viz. Garlic (Allium sativum), Guggul (Commiphora wightii), Hawthorn (Crataegus oxyacantha) and Arjuna (Terminalia arjuna). Although these plants have been used in the treatment of heart disease for hundreds of years, current research methods show us they can be utilized effectively in the treatment of cardiovascular diseases including ischemic heart disease, congestive heart failure, arrhythmias and hypertension.

Conclusion

Although the mechanisms of action are not very clear, there is enough evidence of their efficacy in various cardiovascular disorders. However, for bringing more objectivity and also to confirm traditional claims, more systematic, well-designed animal and randomized clinical studies with sufficient sample sizes are necessary. Multidisciplinary research is still required to exploit the vast potential of these plants. Potential synergistic and adverse side effects of herb–drug interactions also need to be studied. These approaches will help in establishing them as remedies for cardiovascular diseases and including them in the mainstream of healthcare system.

Graphical abstract

Image, graphical abstract

Keywords

  • Cardiovascular disorders;
  • Medicinal plants;
  • Allium sativum;
  • Commiphora wightii;
  • Crataegus oxyacantha;
  • Terminalia arjuna

Abbreviations

  • AIIMS, All India Institute of Medical Sciences;
  • BAR, bile acid receptor;
  • BNP, brain natriuretic peptide;
  • CAD, coronary artery disease;
  • CAZRI, Central Arid Zone Research Institute;
  • CCRAS, Central Council for Research in Ayurveda & Siddha;
  • CDRI, Central Drug Research Institute;
  • CHF, congestive heart failure;
  • CIMAP, Central Institute of Medicinal and Aromatic Plants;
  • CVDs, cardiovascular diseases;
  • CYP7A1, cholesterol 7- alpha-hydroxylase/cytochrome P450 7A1;
  • FXR, farnesoid X receptor;
  • HDL, high density lipoprotein;
  • KCCQ, Kansas City Cardiomyopathy Questionnaire;
  • LDL, low density lipoprotein;
  • NMPB, National Medicinal Plants Board;
  • NYHA, New York Heart Association;
  • OPC, oligomeric procyanidins;
  • PGE2, prostaglandin E2;
  • PXR, pregnane X receptor;
  • STZ, streptozotocin.

Corresponding author. Tel: +91 0522 2297819.