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Cross-sectional and longitudinal lipid determination studies in pregnant women reveal an association between increased maternal LDL cholesterol concentrations and reduced human umbilical vein relaxation
- Source :
- Placenta, Artículos CONICYT, CONICYT Chile, instacron:CONICYT
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- Introduction: Maternal hypercholesterolemia and hypertriglyceridemia during pregnancy is correlated with fetoplacental endothelial dysfunction and atherosclerotic lesions in fetal arteries. Few studies have reported the distribution of the concentrations of maternal total cholesterol (TCh), lipoprotein cholesterol and triglycerides during pregnancy. Therefore, we determined maternal lipid concentration during pregnancy and established the percentiles over which fetoplacental endothelial dysfunction is observed. Methods: A lipoprotein profile was determined for 249 pregnant Chilean women in each trimester of pregnancy in cross-sectional and longitudinal lipid determination studies. Distribution percentiles for TCh, highe, lowe and very-lowedensity lipoprotein (HDL, LDL, and vLDL, respectively) cholesterol and triglycerides were estimated. The reactivity of human umbilical vein rings to the calcitonin gene-related peptide (0.1e1000 nmol/L, 5 min) and sodium nitroprusside (10 mmol/L, 5 min) was measured (wire myography) in KCl-preconstricted vessels. Results: Maternal lipoproteins and triglyceride concentrations increased over time from preconception to the 3rd trimester of pregnancy. Newborn umbilical blood lipoprotein and triglyceride concentrations were lower than those in maternal circulation. Changes in maternal HDL correlated with newborn HDL concentration; however, no correlation between maternal lipoprotein concentrations and newborn weight was found. Maternal TCh and LDL concentrations were inversely correlated with the maximal dilation, but the >75th percentile of maternal TCh and LDL concentrations (>291 and >169 mg/dL, respectively) correlated with reduced calcitonin gene-related peptide sensitivity of the vein rings. Discussion and conclusion: We identified percentiles for maternal TCh and LDL concentrations over which abnormal endothelium-dependent human fetoplacental vascular response is observed.
- Subjects :
- Adult
Nitroprusside
Umbilical Veins
medicine.medical_specialty
Very low-density lipoprotein
Adolescent
Calcitonin Gene-Related Peptide
Vasodilator Agents
Young Adult
chemistry.chemical_compound
High-density lipoprotein
Pregnancy
Internal medicine
Humans
Medicine
Longitudinal Studies
Triglycerides
Retrospective Studies
Triglyceride
business.industry
Cholesterol
Cholesterol, HDL
Hypertriglyceridemia
nutritional and metabolic diseases
Obstetrics and Gynecology
Cholesterol, LDL
medicine.disease
Cross-Sectional Studies
Endocrinology
Reproductive Medicine
chemistry
Low-density lipoprotein
Female
lipids (amino acids, peptides, and proteins)
business
Developmental Biology
Lipoprotein
Subjects
Details
- ISSN :
- 01434004
- Volume :
- 36
- Database :
- OpenAIRE
- Journal :
- Placenta
- Accession number :
- edsair.doi.dedup.....55736bac18f13ea1522698959e59b996