Key result
Secondhand smoke exposure significantly exacerbated natural aging-related left ventricular hypertrophy, collagen accumulation, and cardiac dysfunction in older rats.
Why the study?
Secondhand smoke exposure is associated with increased coronary artery disease risk, but its relationship with left ventricular impairment, fibrosis, and remodeling mechanisms in the aging heart required investigation.
Answers are grounded in this paper and cite their sources.
Secondhand Smoke (SHS) exposure is associated with an increased risk of coronary artery disease. This study's aim was to investigate the relationship of SHS exposure in old rats' left ventricle impaired and fibrosis. To explore the mechanism of cardiac remodeling of exposure to SHS exposure whether it was exacerbated cardiac impaired, especially in the older left ventricle. The animals were placed in a transparent exposure chamber, connected to smoking device and exposed to 15 cigarettes, smoke for 30 min, twice a day, 6 days/week, for 1 month. Histopathologic of left ventricular sections were stained with hematoxylin-eosin staining (H&E) and Masson's trichrome. Left Ventricular (LV) morphological variables assessed using H&E stained and Mass weight changes. The cardiac structures were measured by echocardiographic analysis.
No takes yet. Share an insight, caveat, or question.
Jia Wu (2020) studied Cardiac hypertrophy and fibrosis. Secondhand smoke (SHS) exposure vs. Unexposed old rats and young rats was evaluated on Left ventricular hypertrophy, fibrosis, and cardiac function (p=<0.05). Secondhand smoke exposure significantly exacerbated natural aging-related left ventricular hypertrophy, collagen accumulation, and cardiac dysfunction in older rats.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: