Hmox preeclampsia

OBJECTIVE:  We examined the interaction of polymorphisms in the genes heme oxygenase-1 ( HMOX1 ) and nitric oxide synthase ( NOS3 ) in patients with preeclampsia (PE) as well as the responsiveness to methyldopa and to total antihypertensive therapy. METHODS:  The genes HMOX1 (rs2071746, A/T) and NOS3 (rs1799983, G/T) were genotyped using TaqMan allele discrimination assays (Applied Biosystems, Foster City, CA, USA ), and the levels of enzyme heme oxygenase-1 ( HO-1) were measured using enzyme-linked immunosorbent assay (ELISA)...

OBJECTIVES: We aimed to assess the plasma HO-1 level and its interrelationship with the plasma sFLT-1 level in preeclamptic and healthy pregnant women with different variants of microsatellite polymorphism (GTn) located in the promoter region of the HMOX-1 gene. METHODS: HO-1 and sFLT-1 were measured by ELISA. HMOX1 genotyping was performed using fragment analysis. RESULTS: We found similar and higher levels of plasma HO-1 and sFLT-1, respectively, in preeclampsia...

Preeclampsia is the major cause of both maternal and neonatal morbidity and mortality. Its insidence remains high and the management has not been established yet because its etiology and pathophysiological are still poorly understood. Theories regarding etiopathogenesis and management of preeclampsia have been postulated yet it remains controversial. Placental ischemic and angiogenic imbalance are suggested to be predisposing factors of preeclampsia. It is thereby targeted in prevention of preeclampsia. Unfortunately, both primary and secondary prevention using various supplements and drugs fails to exhibit good outcome...

OBJECTIVE: Maternal cigarette smoking is paradoxically associated with a decreased risk of developing preeclampsia. Since preeclampsia is thought to be associated with altered mechanisms of angiogenesis and oxidative stress, we aim to investigate the influence of maternal smoking on the early placental expression of a panel of genes related to angiogenesis and oxidative stress. MATERIAL AND METHODS: We collected villous tissue samples at 6-7 and 10-11 weeks of gestation from 31 women requesting surgical termination...

Heme oxygenase (Hmox) is an endogenous system that offers protection against placental cytotoxic damage associated with preeclampsia. The Hmox1/carbon monoxide (CO) pathway inhibits soluble Flt-1 (sFlt-1) and soluble Endoglin (sEng). More importantly, statins induce Hmox1 and suppress the release of sFlt-1 and sEng; thus, statins and Hmox1 activators are potential novel therapeutic agents for treating preeclampsia. The contribution of the Hmox system to the pathogenesis of preeclampsia has been further indicated by the incidence of preeclampsia being reduced by a third in smokers, who had reduced levels of circulating sFlt-1...

OBJECTIVE: To evaluate the peripheral blood mononuclear cell (PBMC) expression levels of hemeoxygenase 1 (HMOX-1), superoxide dismutase 1 (SOD-1), vascular endothelial growth factor A (VEGF-A), transforming growth factor beta 1 (TGF-β1), interleukin (IL)-6, IL-15 and AdipoQ genes to study their association with preeclampsia (PE). METHODS: A total of 177 pregnant women were recruited: 108 cases and 69 controls. Quantification of gene expression was measured by quantitative real-time polymerase chain reaction (PCR) using TaqMan probes...

The placental vasculature is critical for nutrient, gas, and waste exchange between the maternal and fetal systems. Its development depends on the proper expression and interaction of angiogenesis and associated growth factors. Heme oxygenase (HMOX), the enzyme for heme degradation, plays a role in angiogenesis and is highly expressed in the placenta. To evaluate the role of maternal HMOX1, the inducible HMOX isozyme, on placental vasculature formation, mice with a partial deficiency in Hmox1 (Hmox1(+/-)) were used...