Perinatal Reference Intervals for Plasma Homocysteine and Factors Influencing Its Concentration
| Autor: | Yves Théorêt, Claire Infante-Rivard, Wagner V. Yotov, Georges-Etienne Rivard |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Adult
Pediatrics medicine.medical_specialty Homocysteine Clinical Biochemistry chemistry.chemical_compound Pregnancy Reference Values Blood plasma medicine Humans Nutritional Physiological Phenomena Risk factor Life Style Chromatography High Pressure Liquid Methylenetetrahydrofolate Reductase (NADPH2) Oxidoreductases Acting on CH-NH Group Donors Polymorphism Genetic biology business.industry Obstetrics Postpartum Period Smoking Biochemistry (medical) Infant Newborn Case-control study Gestational age Fetal Blood medicine.disease chemistry Case-Control Studies Methylenetetrahydrofolate reductase biology.protein Female business Biomarkers Postpartum period |
| Zdroj: | Clinical Chemistry. 48:1100-1102 |
| ISSN: | 1530-8561 0009-9147 |
| DOI: | 10.1093/clinchem/48.7.1100 |
| Popis: | Moderately increased plasma total homocysteine (tHcy) concentrations have been associated with an increased risk of atherothrombotic vascular events (1). Disturbances in homocysteine metabolism have also been reported as a possible risk factor for early pregnancy loss and congenital birth defects, such as neural tube defects, as well as for maternal obstetric complications (2). Reference intervals for healthy maternal and newborn populations are scarce; in particular, we could not find data on large samples of women at delivery. Raijmakers et al. (3) reported tHcy results for samples collected at delivery or 4 h before caesarian section on 35 women. Bohles et al. (4) and Malinow et al. (5) measured tHcy at delivery in 60 and 35 women, respectively, and Bjorke Monsen et al. (6) reported results for 169 samples collected between 96 to 108 h after birth. Available data on newborns include the results from one large study in Italy (7) and a few smaller studies (3)(4)(5)(6), among which only one is from North America; it included 35 women and their newborns (5). Mean tHcy values were quite different among these studies. Genetic, nutritional, and lifestyle factors are believed to influence tHcy concentrations (8)(9). Among the genetic factors, methylenetetrahydrofolate reductase ( MTHFR ) C677T and A1298C gene polymorphisms are potentially important. Supplementation of the diet with folate as well as smoking and caffeine consumption are among other factors that can affect tHcy concentrations. None of the studies cited above took the effect of these factors into account. The goals of our study are ( a ) to provide reference values for tHcy measured within 48 h of delivery from a large unselected sample of women who gave birth to babies born at or above the 10th percentile for gestational age and sex; ( b ) to provide similar … |
| Databáze: | OpenAIRE |
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