NCT03041493

Investigation of the Effects of Electronic Cigarettes on Vascular Health

• Status: Terminated
• Phase: N/A
• Study type: Interventional
• Enrollment: 12 (actual)
• Sponsor: Memorial Sloan Kettering Cancer Center · Academic / Other
• Sex: All
• Age: 18 Years – 50 Years
• Healthy volunteers: Accepted

Summary

The goal is find out if the use of Electronic cigarettes (EC) leads to the same changes that we see in blood vessels of traditional cigarettes (TC) users. The investigators will also enroll non-smokers as "controls", against which they will measure changes in blood vessels in TC and EC users.

Conditions

• Vascular Health

Interventions

Type	Name	Description
BEHAVIORAL	Electronic cigarette	During the first encounter, blood pressure and endothelium-dependent relaxation (EDR) will be measured by flow mediated dilatation (FMD), and a small peripheral IV catheter will be placed in the participant's median antecubital or cephalic vein. A blood sample (10 mL) for EPCs and F2-isoprostanes will be collected. One urine sample will also be collected for measurement of urinary F2-isoprostanes, cotinine and creatinine. These will serve as both baseline measures for subsequent acute exposure to nicotine and as measures of chronic nicotine exposure. The second encounter will be scheduled 4 hours after the first encounter. At that time a blood sample (5 mL) for EPCs will be collected followed by harvesting of vascular endothelial cells for eNOS and NF-κB expression.
BEHAVIORAL	traditional cigarette	During the first encounter, blood pressure and endothelium-dependent relaxation (EDR) will be measured by flow mediated dilatation (FMD), and a small peripheral IV catheter will be placed in the participant's median antecubital or cephalic vein. A blood sample (10 mL) for EPCs and F2-isoprostanes will be collected. One urine sample will also be collected for measurement of urinary F2-isoprostanes, cotinine and creatinine. These will serve as both baseline measures for subsequent acute exposure to nicotine and as measures of chronic nicotine exposure. The second encounter will be scheduled 4 hours after the first encounter. At that time a blood sample (5 mL) for EPCs will be collected followed by harvesting of vascular endothelial cells for eNOS and NF-κB expression.
BEHAVIORAL	(sham cigarette) - no actual exposure to cigarettes	During the first encounter, blood pressure and endothelium-dependent relaxation (EDR) will be measured by flow mediated dilatation (FMD), and a small peripheral IV catheter will be placed in the participant's median antecubital or cephalic vein. A blood sample (10 mL) for EPCs and F2-isoprostanes will be collected. One urine sample will also be collected for measurement of urinary F2-isoprostanes, cotinine and creatinine. These will be compared to the second set of laboratory measurements done at the second encounter that will be scheduled 4 hours after the first encounter. At that time an additional blood sample (5 mL) for EPCs will be collected followed by harvesting of vascular endothelial cells for eNOS and NF-κB expression.

Timeline

• Start date: 2017-02-01
• Primary completion: 2021-06-11
• Completion: 2021-06-11
• First posted: 2017-02-02
• Last updated: 2021-06-18

Locations

1 site across 1 country: United States