Document Detail


Modulation of vascular tone control under isometric muscular stress: Role of estrogen receptors.
MedLine Citation:
PMID:  23070057     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIMS: to evaluate isometric muscle contraction (handgrip) changes on key elements of cardiac afterload, before and after raloxifene administration in postmenopausal women. METHODS/RESULTS: 12 postmenopausal and 12 fertile women were studied. Postmenopausal women underwent raloxifene administration (60mg/day for 30days). We evaluated vascular reactivity in superficial palmar arterial arch during handgrip in postmenopausal women before and after (M+R) drug administration, and in controls. Blood flow was higher after raloxifene administration (p<0.05). Mean arterial pressure (MAP)/mean arterial flow (Fmed) and arterial pulse pressure (APP)/systolic maximum arterial flow (Fmax syst) were lower after raloxifene administration (p<0.001). Systolic blood pressure (SBP)/R-R ratio was higher in postmenopausal women than controls and M+R (p<0.01). End-handgrip systolic and diastolic blood pressure were higher in patients before raloxifene administration than in controls (p<0.001); diastolic and mean arterial pressure reduced after raloxifene administration (p<0.001). End-effort APP/Fmax syst-ratio before treatment were higher than baseline (p<0.05). Controls and no-treated patients showed a MAP/Fmed ratio at end-handgrip higher than M+R group and rest (p<0.05). Handgrip reduced R-R interval and increased SBP/R-R ratio in all groups (p<0.05). CONCLUSIONS: Raloxifene reduced the vascular effects of isometric muscle contraction by modulating the vasomotor tone of peripheral vessels in relation to exercise.
Authors:
Marco Matteo Ciccone; Pietro Scicchitano; Francesca Cortese; Michele Gesualdo; Annapaola Zito; Maria Tesorio; Piero Guida; Annamaria Papagni; Antonio Federici; Ettore Cicinelli
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-12
Journal Detail:
Title:  Vascular pharmacology     Volume:  -     ISSN:  1879-3649     ISO Abbreviation:  Vascul. Pharmacol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101130615     Medline TA:  Vascul Pharmacol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier Inc.
Affiliation:
Section of Cardiovascular Diseases, Department of Emergency and Organ Transplantation, University of Bari, School of Medicine, Policlinico, Bari, Italy. Electronic address: ciccone@cardio.uniba.it.
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