title: The relationship between birthweight and longitudinal changes of blood pressure is modulated by beta-adrenergic receptor genes: the Bogalusa Heart Study.
abstract: This study examines the genetic influence of beta-adrenergic receptor gene polymorphisms (beta(2)-AR Arg16Gly and beta(3)-AR Trp64Arg) on the relationship of birthweight to longitudinal changes of blood pressure (BP) from childhood to adulthood in 224 black and 515 white adults, aged 21-47 years, enrolled in the Bogalusa Heart Study. Blacks showed significantly lower birthweight and frequencies of beta(2)-AR Gly16 and beta(3)-AR Trp64 alleles and higher BP levels and age-related trends than whites. In multivariable regression analyses using race-adjusted BP and birthweight, low birthweight was associated with greater increase in age-related trend of systolic BP (standardized regression coefficient beta = -0.09, P = .002) and diastolic BP (beta = -0.07, P = .037) in the combined sample of blacks and whites, adjusting for the first BP measurement in childhood, sex, age, and gestational age. Adjustment for the current body mass index strengthened the birthweight-BP association. Importantly, the strength of the association, measured as regression coefficients, was modulated by the combination of beta(2)-AR and beta(3)-AR genotypes for systolic (P = .042 for interaction) and diastolic BP age-related trend (P = .039 for interaction), with blacks and whites showing a similar trend in the interaction. These findings indicate that the intrauterine programming of BP regulation later in life depends on beta-AR genotypes.
authors.affiliation: Center for Cardiovascular Health, Department of Epidemiology, Tulane University Health Sciences Center, New Orleans, LA 70112, USA.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Sathanur R
authors.initials: SR
authors.lastname: Srinivasan
authors.forename: D Michael
authors.initials: DM
authors.lastname: Hallman
authors.forename: Gerald S
authors.initials: GS
authors.lastname: Berenson
mesh_terms: D000293:Adolescent; D000328:Adult; D019540:Area Under Curve; D001724:Birth Weight; D044383:Black People / Q000235:genetics; D001794:Blood Pressure / Q000235:genetics*; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008145:Louisiana / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011943:Receptors, Adrenergic, beta / Q000235:genetics*; D012044:Regression Analysis; D012737:Sex Factors; D044465:White People / Q000235:genetics; D001741:Black or African American
chemical_list: D011943:Receptors, Adrenergic, beta
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