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Archivos de cardiología de México

versión On-line ISSN 1665-1731versión impresa ISSN 1405-9940

Resumen

AVILA-VANZZINI, Nydia et al. The ACE I/D polymorphism is associated with nitric oxide metabolite and blood pressure levels in healthy Mexican men. Arch. Cardiol. Méx. [online]. 2015, vol.85, n.2, pp.105-110. ISSN 1665-1731.  http://dx.doi.org/10.1016/j.acmx.2014.12.005.

The I/D insertion/deletion polymorphism of the angiotensin-converting enzyme has been related to hypertension. This polymorphism also seems to have gender related implications. Angiotensin II contributes to the production and release of oxygen reactive species that react with nitric oxide, inactivating its effects. Objective: To establish whether the ACE I/D polymorphism correlates with nitric oxide plasma metabolites in healthy men and women. Methods: Among 896 subjects between 18 and 30 years of age range, 138 fulfilled inclusion criteria. The polymorphism was identified by polymerase chain reaction, and blood nitric oxide metabolites were analyzed following the method described by Bryan. Results: Both systolic and diastolic arterial pressures were higher in men than in women (107/67 vs. 101/65 mmHg, p < 0.001). In terms of the ACE gene, there were differences in the concentration of nitric oxide metabolites in men with the I/D and D/D genotypes when compared to carriers of the I/I genotype (33.55 and 29.23 vs. 53.74 pmol/ml; p = <0.05), while there were no significant differences in women when compared by genotype. Men with the D/D genotype had higher systolic blood pressure than I/D carriers (111 vs. 104 mmHg, p < 0.05). We observed no arterial blood pressure differences in women when grouped by ACE genotype. Conclusions: The ACE D/D genotype was associated with nitric oxide metabolite levels and systolic blood pressure in clinically healthy men while it had no effect in women.

Palabras llave : ACE I/D polymorphism; Nitric oxide; Healthy subjects.

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