Genetic and Environmental Influences on Blood Pressure and Body Mass Index in the National Academy of Sciences-National Research Council World War II Veteran Twin Registry

Blood pressure (BP) and obesity phenotypes may covary due to shared genetic or environmental factors or both. Furthermore, it is possible that the heritability of BP differs according to obesity status-a form of G×E interaction. This hypothesis has never been tested in White twins. The present study...

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Veröffentlicht in:Hypertension (Dallas, Tex. 1979) Jg. 76; H. 5; S. 1428
Hauptverfasser: Wang, Bin, Wu, Ting, Neale, Michael C, Verweij, Renske, Liu, Gaifen, Su, Shaoyong, Snieder, Harold
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States 01.11.2020
Schlagworte:
Adolescent
Adult
Blood Pressure - genetics
Body Mass Index
Diseases in Twins - etiology
Diseases in Twins - genetics
Genetic Predisposition to Disease
Humans
Hypertension - etiology
Hypertension - genetics
Male
Obesity - etiology
Obesity - genetics
Phenotype
Registries
Risk Factors
Twins
United States
Veterans
Young Adult
United States
blood pressure
registries
twin study
body mass index
obesity
ISSN:1524-4563, 1524-4563
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Zusammenfassung:Blood pressure (BP) and obesity phenotypes may covary due to shared genetic or environmental factors or both. Furthermore, it is possible that the heritability of BP differs according to obesity status-a form of G×E interaction. This hypothesis has never been tested in White twins. The present study included 15 924 White male twin pairs aged between 15 and 33 years from the National Academy of Sciences-National Research Council World War II Veteran Twin Registry. Systolic and diastolic BPs, as well as height and weight, were measured at the induction physical examination. Body mass index (BMI) was used as the index of general obesity. Quantitative genetic modeling was performed using Mx software. Univariate analysis showed that narrow sense heritabilities (95% CI) for systolic BP, diastolic BP, height, and BMI were 0.401 (0.381-0.420), 0.297 (0.280-0.320), 0.866 (0.836-0.897), and 0.639 (0.614-0.664), respectively. Positive phenotypic correlations of BMI with systolic BP (r=0.13) and diastolic BP (r=0.08) were largely due to genetic factors (70% and 86%, respectively). The gene-BMI interaction analysis did not show any support for a modifying effect of BMI on genetic and environmental influences of systolic BP and diastolic BP. Our results suggest that correlations between BP and BMI are mainly explained by common genes influencing both. Higher BMI levels have no influence on the penetrance of genetic vulnerability to elevated BP. These conclusions may prove valuable for gene-finding studies.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1524-4563
1524-4563
DOI:10.1161/HYPERTENSIONAHA.120.15232