The objective of the study is to assess the impact of genetic variation (especially polymorphisms of the gene coding endothelial nitric oxide synthase (eNOS) and the bradykinin B2 receptor gene) on venous and arterial responsiveness to vasodilators in healthy individuals without cardiovascular risk factors.
Study I: Using the dorsal hand vein compliance technique dose-response curves to bradykinin and sodium nitroprusside will be obtained in healthy volunteers during preconstriction with phenylephrine and after pretreatment with a single dose of 500 mg i.v. acetylsalicylic acid. Study II: Using venous occlusion plethysmography dose-response curves to acetylcholine, sodium nitroprusside and L-NG-monomethyl-arginine (L-NMMA) will be obtained in healthy volunteers pretreated with a single dose of 500mg i.v. acetylsalicylic acid.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
ECT
Masking
DOUBLE
Enrollment
100
Dept. of Internal Medicine VI
Heidelberg, Baden-Wurttemberg, Germany
RECRUITINGStudy I: Venous responsiveness assessed by dorsal hand vein compliance technique
Study II: Forearm blood flow assessed by venous occlusion plethysmography
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