Key result
Vascular responses to locally infused tyramine were significantly predicted by family history of hypertension, female sex, and genetic variants at the CHGB (P=0.002) and CYB561 (P<0.001) loci.
Why the study?
Do genetic variations within adrenergic pathways determine the in vivo vascular response to presynaptic stimulation with tyramine in normotensive humans?
Population
49 normotensive men and women of 5 ethnicities
Design
Cross-sectional
Authors
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Genetic variants may modulate local catecholamine responses across ethnicities; hypothesis-generating for hypertension heritability and requires validation before clinical consideration.
Cross-Sectional (n=49)
Do genetic variations within adrenergic pathways determine the in vivo vascular response to presynaptic stimulation with tyramine in normotensive humans?
p-value: p=<0.001
Genetic variants in adrenergic pathways, particularly CHGB, predict in vivo vascular responses to catecholamines, providing insight into the heritability of hypertension.
Fung et al. (2008) conducted a cross-sectional in Normotension (n=49). Genetic variation at adrenergic target loci was evaluated on Vascular response (venoconstriction) (p=<0.001). Vascular responses to locally infused tyramine were significantly predicted by family history of hypertension, female sex, and genetic variants at the CHGB (P=0.002) and CYB561 (P<0.001) loci.
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