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Age-dependent vasorelaxation of Casimiroa edulis and Casimiroa pubescens extracts in rat caudal artery in vitro.
MedLine Citation:
PMID:  21726621     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIM OF THE STUDY: Leaf and seed decoctions of Casimiroa spp. are used in Mexican traditional medicine to treat high blood pressure. Previous researches showed as Casimiroa extracts are able to induce relaxation of rat aortic and caudal arteries. To study the influence of the aging, we determined the vascular effect induced by extracts of Casimiroa edulis and Casimiroa pubescens in arterial tissues from young and old rat. MATERIALS AND METHODS: The activity of Casimiroa edulis extracts: hexanic-leaf (Ce5), methanolic-leaf (Ce6), hexanic-seed (Ce7) and methanolic-seed (Ce8), and Casimiroa pubescens: hexanic-leaf (Cp9), methanolic-leaf (Cp10), hexanic-seed (Cp11) and methanolic-seed (Cp12) were investigated in precontracted caudal arteries of young (4 months) and old (20 months) rats. RESULTS: The Casimiroa extracts tested at 20μg/ml induced vasorelaxation in phenylephrine-precontracted arterial tissues both in young and old arterial tissues. Methanolic seed extracts of Casimiroa edulis (Ce8) and Casimiroa pubescens (Cp12) caused a higher relaxation in young than in old arterial tissues. Nifedipine (0.01μM) did not change the vasorelaxation induced by Casimiroa edulis extract either in young and old rat arterial tissues. CONCLUSION: The vasorelaxation induced by Casimiroa edulis and Casimiroa pubescens extracts is decreased from aging since the effects were higher in young than in old rat arterial tissues. However, the methanolic-seed extracts of both plant species induced a relevant vasorelaxation also in old arterial tissues. Thus the results support the traditional use of Casimiroa decoctions as antihypertensive, also in elderly.
Authors:
Riccardo Bertin; Aída Garcia-Argaéz; Mariano Martìnez-Vàzquez; Guglielmina Froldi
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-6-24
Journal Detail:
Title:  Journal of ethnopharmacology     Volume:  -     ISSN:  1872-7573     ISO Abbreviation:  -     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-7-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7903310     Medline TA:  J Ethnopharmacol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Ireland Ltd.
Affiliation:
Department of Pharmacology and Anaesthesiology, University of Padova, Largo E. Meneghetti 2, 35131 Padova, Italy.
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