[Relationship between ACE gene insertion or deletion polymorphism and left ventricular mass in newborns admitted to the neonatal intensive care unit].
OBJECTIVE
To study the relationship between angiotensin converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism and left ventricular mass (LVM) in newborns admitted to the neonatal intensive care unit (NICU).


METHODS
Seventy-two newborns admitted to the NICU were enrolled. ACE genotypes were determined by genomic DNA which was isolated from heel-prick blood. Disease status of the newborns was evaluated by the Neonatal Critical Score (draft) on postnatal day 1. LVM and LVM index (LVMI) were evaluated by echocardiography on postnatal days 1-3.


RESULTS
DD genotype was identified in 11 cases, ID genotype in 31 cases, and II genotype in 30 cases. There were no significant differences in clinical characteristics, critical score and body measurements in newborns with different genotypes. The DD genotype group showed significantly lower LVMI than the group with ID+II genotypes (29±4 g/m2 vs 35±8 g/m2; P<0.05).


CONCLUSIONS
ACE gene polymorphism is associated with the LVMI in newborns admitted to the NICU. The LVMI of DD genotype carriers is significantly lower than that of ID+II genotypes carriers, which suggests that D allele may be associated with the growth and development of left ventricular.
Department of Pediatrics, Peking University Third Hospital, Beijing, China.
Tong-Yan
TY
Han
Xin-Li
XL
Wang
Yun-Pu
YP
Cui
Hong-Mao
HM
Ye
Zai-Ling
ZL
Li
Xiao-Mei
XM
Tong
Mei-Hua
MH
Piao
Song
S
Li
D004452:Echocardiography; D005260:Female; D017353:Gene Deletion; D005838:Genotype; D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006801:Humans; D007363:Intensive Care Units, Neonatal; D008297:Male; D016254:Mutagenesis, Insertional; D007703:Peptidyl-Dipeptidase A / Q000235:genetics*; D011110:Polymorphism, Genetic
D007703:Peptidyl-Dipeptidase A