CYP3A5 genotype is associated with elevated blood pressure.

Abstract:

:The present study aimed to determine whether a polymorphism in CYP3A5, encoding the major CYP3A enzyme in the human kidney, is associated with blood pressure in Caucasians. A homogenous group of 115 young, white male students with normal or mildly elevated, but untreated blood pressure was included. Blood pressure was recorded by ambulatory 24-h blood pressure-monitoring and compared between individuals with high (*1/*3) and low CYP3A5 expression (*3/*3). Moreover, genotype-dependent differences in parameters associated with the renin-angiotensin-aldosterone system were evaluated. Twenty-four hour diastolic blood pressure values were not significantly different between the two groups. However, individuals with the CYP3A5*3/*3 genotype had significantly higher 24-h ambulatory systolic blood pressure values compared to subjects with the CYP3A5*1/*3 genotype (129+/-10 versus 124+/-9, P < 0.05). There was no association of CYP3A5 genotype with angiotensin II plasma concentrations, renal plasma flow, glomerular filtration rate, urinary sodium excretion and parameters determined by echocardiography, but the *3/*3 group had significantly lower serum aldosterone concentrations compared to the individuals with the *1/*3 genotype (101+/-29 versus 117+/-29 pg/ml, P < 0.05). These data, as generated with a homogenous population of young Caucasians, indicate that the CYP3A5 genotype affects blood pressure in humans possibly by genotype-dependent differences in renal, CYP3A5-mediated metabolism of cortisol and/or aldosterone. We interpret the lower serum aldosterone concentration in the genotype group with the elevated systolic blood pressure as a counter-regulatory mechanism to attenuate the increased blood pressure associated with the CYP3A5*3/*3 genotype.

journal_name

Pharmacogenet Genomics

authors

Fromm MF,Schmidt BM,Pahl A,Jacobi J,Schmieder RE

doi

10.1097/01.fpc.0000175599.49764.98

keywords:

subject

Has Abstract

pub_date

2005-10-01 00:00:00

pages

737-41

issue

10

eissn

1744-6872

issn

1744-6880

pii

01213011-200510000-00008

journal_volume

15

pub_type

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