Key Points
- To identify the cellular mechanisms by which tobacco smoke alters vascular endothelial morphology and barrier function to promote atherosclerosis.
- Exposed vascular endothelial cells and tissue to tobacco smoke extracts across acute and chronic timeframes.
- Tested the temporal stability of smoke extracts after 6-hour incubation at 37 °C and evaluated endothelial recovery following medium replacement.
- Assessed pharmacological inhibition of smoke-induced endothelial damage using N-acetyl cysteine and statins.
- Tobacco smoke extracts rapidly altered endothelial cell and tissue morphology, triggering a loss of barrier function within minutes and causing necrosis upon long-term exposure.
- Extracts incubated for 6 hours at 37 °C without cells lost all cytotoxic activity, and damaged endothelium was rescued by replacement with fresh medium.
- Treatment with N-acetyl cysteine or statins effectively inhibited the adverse cellular effects induced by tobacco smoke.
Structured PICO
PPopulationvascular endothelial cells and tissue
IInterventiontobacco smoke extracts
OOutcomeendothelial barrier function and cell morphologysurrogate
Tobacco smoke rapidly disrupts endothelial barrier function and induces necrosis, providing a mechanistic link to atherosclerosis that can be mitigated by N-acetyl cysteine and statins.