Association of ACE Gene Insertion/Deletion Polymorphism With Birth Weight, Blood Pressure Levels, and ACE Activity in Healthy Children

Association of ACE Gene Insertion/Deletion Polymorphism With Birth Weight, Blood Pressure Levels, and ACE Activity in Healthy Children

Author Ajala, Aline R. Autor UNIFESP Google Scholar
Almeida, Sandro S. Autor UNIFESP Google Scholar
Rangel, Marina Autor UNIFESP Google Scholar
Palomino, Zaira Autor UNIFESP Google Scholar
Strufaldi, Maria Wany L. Autor UNIFESP Google Scholar
Puccini, Rosana F. Autor UNIFESP Google Scholar
Araujo, Ronaldo C. Autor UNIFESP Google Scholar
Casarini, Dulce Elena Autor UNIFESP Google Scholar
Franco, Maria C. P. Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract BACKGROUNDThe human angiotensin-converting enzyme (ACE) gene contains a polymorphism consisting of either an insertion (I) or a deletion (D) of a 287 bp Alu repetitive sequence in intron 16. the potential role of ACE polymorphism in the risk of developing hypertension or other cardiovascular disorders has not been determined in relation to birth weight (BW).METHODSThe ACE genotype and plasma ACE activity were determined in 167 children. Among these children, 60 were identified with low BW (LBW), and 107 were of normal BW (NBW).RESULTSACE activity levels were significantly elevated in LBW children compared with the NBW group (P < 0.001). There was a significant association of the ACE activity with systolic blood pressure (SBP) levels in our population (P < 0.001). Among the ACE genotypes, no significant differences were found with respect to BW (P = 0.136). However, our results revealed that LBW children had a higher D allele frequency than NBW children (P = 0.036). When analyzed by quartiles of SBP or ACE activity, we found a greater frequency of both the LBW children and those carrying the DD genotype in the highest quartiles of these parameters, whereas the NBW children tended to be in the lowest quartile (P < 0.001). Similar results were observed with the heterozygote ID children after categorization by quartiles of both SBP (P < 0.001) and ACE activity (P = 0.004).CONCLUSIONSThe ACE I/D polymorphism, especially the DD genotype, can be interpreted as a major factor in association between LBW and high BP levels.
Keywords ACE activity
ACE I/D polymorphism
birth weight
blood pressure
children
hypertension
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Grant number FAPESP: 2007/58044-2
Date 2012-07-01
Published in American Journal of Hypertension. New York: Nature Publishing Group, v. 25, n. 7, p. 827-832, 2012.
ISSN 0895-7061 (Sherpa/Romeo, impact factor)
Publisher Nature Publishing Group
Extent 827-832
Origin http://dx.doi.org/10.1038/ajh.2012.50
Access rights Closed access
Type Article
Web of Science ID WOS:000305373700016
URI http://repositorio.unifesp.br/handle/11600/35068

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