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Heme oxygenase-1 modulates fetal growth in the rat


, : Heme oxygenase-1 modulates fetal growth in the rat. Laboratory Investigation 82(6): 687-692, June

Intrauterine growth restriction is associated with increased perinatal morbidity and mortality as well as with lifelong cardiovascular and metabolic complications. Deficiency of heme oxygenase 1 (HO-1) is associated with growth restriction in mice and in humans, suggesting a role for HO-1 in fetal growth and maintenance of pregnancy. We hypothesized that modulation of HO-1 in the pregnant rat would alter fetal growth. In pregnant dams, placental HO activity was significantly inhibited with zinc deuteroporphyrin IX 2,4 bis glycol, and HO-1 protein was increased by transducing adenoviral human HO-1. Inhibition of HO-1 by zinc deuteroporphyrin IX 2,4 bis glycol resulted in a significant decrease in pup size, whereas transfection with hHO-1 resulted in increased pup size. Furthermore, the expression of IGF binding protein-1 and its receptor paralleled the expression of HO-1 in the placenta and were significantly modulated by modification of HO-1 along with the expression of vascular endothelial growth factor. These observations demonstrate that HO-1 modulates fetal growth by its effects on placental growth factors.

US$19.90

PMID: 12065678

DOI: 10.1097/01.lab.0000017167.26718.f2


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