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Effect of Smoking and Time of Day on Eosinophils
Sponsor: Marek Lommatzsch
Summary
The study investigates the effect of acute smoking and time of day on blood eosinophils in chronic smokers. Chronic cigarette smokers without chronic respiratory diseases smoking at least 8 cigarettes per day and never-smoking controls are examined. Blood eosinophil counts and surface molecules are measured at 8 and 12 am in both groups. In smokers, two measurements are performed (at least 4 weeks apart): one measurement with no smoking between 8 and 12 am, and another measurement with smoking of 8 cigarettes between 8 and 12 am.
Official title: Effects of Acute Smoking and Time of Day on Blood Eosinophils in Humans
Key Details
Gender
All
Age Range
18 Years - 50 Years
Study Type
INTERVENTIONAL
Enrollment
20
Start Date
2026-02-07
Completion Date
2026-12-06
Last Updated
2026-06-04
Healthy Volunteers
Yes
Conditions
Interventions
Smoking for 4 hours
Smoking of 8 cigarettes in 4 hours
Locations (1)
University of Rostock
Rostock, Germany