TY - JOUR
T1 - Genetic and environmental determinants of longitudinal stability of arterial stiffness and wave reflection
T2 - A twin study
AU - Pucci, Giacomo
AU - Tarnoki, Adam D.
AU - Medda, Emanuela
AU - Tarnoki, David L.
AU - Littvay, Levente
AU - Maurovich-Horvat, Pal
AU - Jermendy, Adam L.
AU - Godor, Erika
AU - Fejer, Bence
AU - Hernyes, Anita
AU - Lucatelli, Pierleone
AU - Fanelli, Fabrizio
AU - Farina, Filippo
AU - Baracchini, Claudio
AU - Meneghetti, Giorgio
AU - Jermendy, Gyorgy
AU - Merkely, Bela
AU - Schillaci, Giuseppe
AU - Fagnani, Corrado
AU - Stazi, Maria A.
N1 - Publisher Copyright:
© 2018 Wolters Kluwer Health, Inc. All rights reserved.
PY - 2018
Y1 - 2018
N2 - Background: We aimed at evaluating the impact of genetic and environmental factors on longitudinal changes in aortic pulse wave velocity (aPWV) and aortic augmentation index (aAIx). Method: Three hundred and sixty-eight Italian and Hungarian adult twins (214 monozygotic, 154 dizygotic) underwent repeated evaluations of aPWV and aAIx (TensioMed Arteriograph). Within-individual/cross-wave, cross-twin/within-wave and cross-twin/cross-wave correlations were calculated; bivariate Cholesky models were fitted to calculate additive genetic (A), shared environmental (C) and unique environmental (E) components. Results: For both aPWV and aAIx, cross-twin correlations in monozygotic pairs (r between 0.35 and 0.56) were all significant and always higher than in dizygotic pairs, both at wave 1 and at wave 2. Heritability and unshared environmental proportion of variance at each wave were substantially time-invariant for aPWV (heritability 0.51, 95% CI 0.36-0.63 at wave 1; 0.49, 95% CI 0.34-0.62 at wave 2), whereas for aAIx, we observed a diminished genetic effect (heritability 0.57, 95% CI 0.45-0.67 at wave 1; 0.37, 95% CI 0.21-0.51 at wave 2). Overlapping genetic factors explained a high proportion (0.88, 95% CI 0.61-1.00) of longitudinal covariance for aPWV, and had a relatively lower impact on aAIx (0.55, 95% CI 0.35-0.70). Genetic correlations of aPWV (r¼0.64, 95% CI 0.42-0.85) and aAIx (r¼0.70, 95% CI 0.52-0.87) between waves were lower than 1, suggesting a potential contribution of novel genetic variance on arterial stiffening. Conclusion: Changes in aPWV and aAIx over time are largely genetically determined. Our results might stimulate further studies on genetic and epigenetic factors influencing the process of vascular ageing.
AB - Background: We aimed at evaluating the impact of genetic and environmental factors on longitudinal changes in aortic pulse wave velocity (aPWV) and aortic augmentation index (aAIx). Method: Three hundred and sixty-eight Italian and Hungarian adult twins (214 monozygotic, 154 dizygotic) underwent repeated evaluations of aPWV and aAIx (TensioMed Arteriograph). Within-individual/cross-wave, cross-twin/within-wave and cross-twin/cross-wave correlations were calculated; bivariate Cholesky models were fitted to calculate additive genetic (A), shared environmental (C) and unique environmental (E) components. Results: For both aPWV and aAIx, cross-twin correlations in monozygotic pairs (r between 0.35 and 0.56) were all significant and always higher than in dizygotic pairs, both at wave 1 and at wave 2. Heritability and unshared environmental proportion of variance at each wave were substantially time-invariant for aPWV (heritability 0.51, 95% CI 0.36-0.63 at wave 1; 0.49, 95% CI 0.34-0.62 at wave 2), whereas for aAIx, we observed a diminished genetic effect (heritability 0.57, 95% CI 0.45-0.67 at wave 1; 0.37, 95% CI 0.21-0.51 at wave 2). Overlapping genetic factors explained a high proportion (0.88, 95% CI 0.61-1.00) of longitudinal covariance for aPWV, and had a relatively lower impact on aAIx (0.55, 95% CI 0.35-0.70). Genetic correlations of aPWV (r¼0.64, 95% CI 0.42-0.85) and aAIx (r¼0.70, 95% CI 0.52-0.87) between waves were lower than 1, suggesting a potential contribution of novel genetic variance on arterial stiffening. Conclusion: Changes in aPWV and aAIx over time are largely genetically determined. Our results might stimulate further studies on genetic and epigenetic factors influencing the process of vascular ageing.
KW - Ageing
KW - Arterial function
KW - Arterial stiffness
KW - Blood pressure
KW - Genetics
KW - Hypertension
KW - Longitudinal study
KW - Twin study
KW - Wave reflection
UR - http://www.scopus.com/inward/record.url?scp=85055830806&partnerID=8YFLogxK
U2 - 10.1097/HJH.0000000000001869
DO - 10.1097/HJH.0000000000001869
M3 - Article
C2 - 30382956
AN - SCOPUS:85055830806
SN - 0263-6352
VL - 36
SP - 2316
EP - 2323
JO - Journal of Hypertension
JF - Journal of Hypertension
IS - 12
ER -