Open AccessEstrogen does not prevent endothelial dysfunction caused by cigarette smoking
Author(s) -
GarcíiaFernández Raymid,
PérezVelasco Javier G.,
ConcepcionMilian Ariadna,
Sosa Sualy,
Navaroli Francisco,
GarcíaBarreto David
Publication year - 2004
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960270205
Subject(s) - medicine , estrogen , brachial artery , menstrual cycle , endothelial dysfunction , cigarette smoking , endothelium , basal (medicine) , endocrinology , physiology , menopause , hormone , blood pressure , insulin
Background : Estrogen favors endothelial function while acute tobacco use provokes dysfunction. Previous studies have not examined the effect of smoking one cigarette at different stages of the menstrual cycle. Hypothesis : Favorable actions of estrogen on endothelial function are transitorily abolished by smoking one cigarette. Methods : Brachial artery endothelium‐dependent dilation was measured noninvasively before, 10 min, and 1 h after smoking in 17 healthy premenopausal women. Studies were done in the first 3 days (early stage) and repeated between Days 9 and 13 of the menstrual cycle (middle stage). Estradiol was measured after each study. Results : At basal conditions, women in the middle stage of their cycles, when estradiol was 20 times higher than in the early stage, had significantly more endothelial‐dependent brachial dilatation. No difference in the marked depression caused by cigarette smoking was found between the two stages. One h recuperation was complete in both phases. Conclusion : Cigarette smoking abolishes the protection of circulating estrogen on endothelial function.