The primary purpose of this study is to evaluate the acute effects of electronic cigarette (e-cigarette) smoking on measurable biomarkers of platelet function, vascular endothelial function and inflammation in healthy active smokers. 10 healthy subjects, smokers, with no other medical conditions will be included in this study and measurements will be obtained at baseline and after smoking an e-cigarette. The study will contribute to the understanding of the effects of e-cigarettes on cardiovascular physiology, specifically establishing if the use of e-cigarettes increases platelet aggregation and platelet activation when compared to baseline in healthy active smokers, if the use of e-cigarettes decreases brachial artery flow-mediated dilation compared to baseline in healthy active smokers, and to determine the association between biomarkers of inflammation, platelet function, and vascular endothelial function before and after use of e-cigarettes.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Subjects will be asked to smoke an e-cigarette containing the equivalence of nicotine in one tobacco cigarette (15 puffs) in the presence of research staff. Each puff will be timed at 4 seconds and there should be a 20-30 seconds interpuff interval as previously recommended.
New York University School of Medicine
New York, New York, United States
Change in measure of platelet aggregometry
Platelet aggregation is part of the sequence of events leading to the formation of a thrombus (clot).
Time frame: 1 Day
Change in Measure of Flow Cytometry
P-Selectin PAC-1 Platelet-Monocyte Aggregates
Time frame: 1 Day
Change in measure of Endothelial Function Assessment
Brachial artery flow mediated dilatation (BA-FMD)
Time frame: 1 Day
Change in measure of Inflammatory Marker Luminex panel-HS-CRP
Time frame: 1 Day
Change in measure of Inflammatory Marker Luminex panel- IL-6
Time frame: 1 Day
Change in measure of Inflammatory Marker Luminex panel- IL-8
Time frame: 1 Day
Change in measure of Inflammatory Marker Luminex panel- IL-10
Time frame: 1 Day
Change in measure of Inflammatory Marker IL-1b
Time frame: 1 Day
Change in measure of Inflammatory Marker- endothelin
Time frame: 1 Day
Change in measure of Inflammatory Marker- TNF-a
Time frame: 1 Day
Change in measure of Inflammatory Marker- vWF
Time frame: 1 Day
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Change in measure of Inflammatory Marker- thrombomodulin
Time frame: 1 Day
Change in measure of Inflammatory Marker- E-selectin
Time frame: 1 Day
Change in measure of Inflammatory Marker- PAI-1
Time frame: 1 Day
Change in brachial artery flow mediated dilatation measured non-invasively with a ultrasound probe at rest and after inflation of a forearm blood pressure cuff to 50 mm Hg above measured systolic blood pressure for 5 minutes
Time frame: 1 Day
Change in blood pressure measured with an automated blood pressure instrument
Time frame: 1 Day
Change in heart rate measured with an automated blood pressure instrument
Time frame: 1 Day
Change in pulse oxymetry measured with a pulse oximeter attached to the finger
Time frame: 1 Day