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Nitric oxide synthase gene polymorphism (G894T) influences arterial stiffness in adults: The Bogalusa Heart Study.
Am J Hypertens. 2004 Jul; 17(7):553-9.AJ

Abstract

The endothelial nitric oxide synthase (eNOS) gene is known to influence the regulation of blood pressure (BP) levels. However, whether the eNOS gene locus influences arterial stiffness independently of BP is unknown. This study examines the independent effect of the eNOS gene polymorphism (G894T) on arterial stiffness in 118 African American and 285 white young adults, aged 25 to 37 years. Arterial stiffness was measured from M-mode ultrasounds of common carotid artery using Peterson's (Ep) and Young's (YEM) elastic modulus. African Americans displayed a lower frequency of the T allele than did whites (0.131 v 0.321, P <.001). The T allele was associated with lower systolic BP in African Americans (P =.04) but not in whites. African Americans showed significantly higher values of Ep (that is, increased stiffness) than did whites (49.9 kPa vs 45.5 kPa, P =.003), whereas no such difference in ethnicity was found for YEM, a measure of elasticity adjusted for relative wall thickness. After controlling for sex, age, body mass index, insulin, heart rate, and mean arterial pressure, the T allele was associated with significantly lower values of Ep (P =.037) and YEM (P =.068) in African Americans. Although the genotype effect on Ep and YEM was not significant in whites, trends were similar to those in African Americans. In the total sample, including ethnicity as an additional covariate, the G894T genotype was significantly associated with Ep (P =.046) and YEM (P =.035). These results suggest that the allelic variation (G894T) of the eNOS gene or a locus closely linked to it is associated with lower arterial wall stiffness, adjusting for BP levels, in young adults.

Authors+Show Affiliations

Tulane Center for Cardiovascular Health, Tulane University Health Sciences Center, New Orleans, Louisiana 70112, USA. berenson@tulane.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

15233973

Citation

Chen, Wei, et al. "Nitric Oxide Synthase Gene Polymorphism (G894T) Influences Arterial Stiffness in Adults: the Bogalusa Heart Study." American Journal of Hypertension, vol. 17, no. 7, 2004, pp. 553-9.
Chen W, Srinivasan SR, Bond MG, et al. Nitric oxide synthase gene polymorphism (G894T) influences arterial stiffness in adults: The Bogalusa Heart Study. Am J Hypertens. 2004;17(7):553-9.
Chen, W., Srinivasan, S. R., Bond, M. G., Tang, R., Urbina, E. M., Li, S., Boerwinkle, E., & Berenson, G. S. (2004). Nitric oxide synthase gene polymorphism (G894T) influences arterial stiffness in adults: The Bogalusa Heart Study. American Journal of Hypertension, 17(7), 553-9.
Chen W, et al. Nitric Oxide Synthase Gene Polymorphism (G894T) Influences Arterial Stiffness in Adults: the Bogalusa Heart Study. Am J Hypertens. 2004;17(7):553-9. PubMed PMID: 15233973.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Nitric oxide synthase gene polymorphism (G894T) influences arterial stiffness in adults: The Bogalusa Heart Study. AU - Chen,Wei, AU - Srinivasan,Sathanur R, AU - Bond,M Gene, AU - Tang,Rong, AU - Urbina,Elaine M, AU - Li,Shengxu, AU - Boerwinkle,Eric, AU - Berenson,Gerald S, PY - 2003/09/22/received PY - 2003/11/21/revised PY - 2004/02/24/accepted PY - 2004/7/6/pubmed PY - 2004/11/9/medline PY - 2004/7/6/entrez SP - 553 EP - 9 JF - American journal of hypertension JO - Am J Hypertens VL - 17 IS - 7 N2 - The endothelial nitric oxide synthase (eNOS) gene is known to influence the regulation of blood pressure (BP) levels. However, whether the eNOS gene locus influences arterial stiffness independently of BP is unknown. This study examines the independent effect of the eNOS gene polymorphism (G894T) on arterial stiffness in 118 African American and 285 white young adults, aged 25 to 37 years. Arterial stiffness was measured from M-mode ultrasounds of common carotid artery using Peterson's (Ep) and Young's (YEM) elastic modulus. African Americans displayed a lower frequency of the T allele than did whites (0.131 v 0.321, P <.001). The T allele was associated with lower systolic BP in African Americans (P =.04) but not in whites. African Americans showed significantly higher values of Ep (that is, increased stiffness) than did whites (49.9 kPa vs 45.5 kPa, P =.003), whereas no such difference in ethnicity was found for YEM, a measure of elasticity adjusted for relative wall thickness. After controlling for sex, age, body mass index, insulin, heart rate, and mean arterial pressure, the T allele was associated with significantly lower values of Ep (P =.037) and YEM (P =.068) in African Americans. Although the genotype effect on Ep and YEM was not significant in whites, trends were similar to those in African Americans. In the total sample, including ethnicity as an additional covariate, the G894T genotype was significantly associated with Ep (P =.046) and YEM (P =.035). These results suggest that the allelic variation (G894T) of the eNOS gene or a locus closely linked to it is associated with lower arterial wall stiffness, adjusting for BP levels, in young adults. SN - 0895-7061 UR - https://www.unboundmedicine.com/medline/citation/15233973/Nitric_oxide_synthase_gene_polymorphism__G894T__influences_arterial_stiffness_in_adults:_The_Bogalusa_Heart_Study_ L2 - https://academic.oup.com/ajh/article-lookup/doi/10.1016/j.amjhyper.2004.02.021 DB - PRIME DP - Unbound Medicine ER -