منابع مشابه
A Quantitative Method of Determining Urinary Phenols.
‘IT0STUDY PROTEIN METABOLISM with special reference to tyrosine as well as to study the deranged metabolism of aromatic compounds in phenylketonuria and similar disorders, quantitative determination of urinary phenols is desirable. Volterra (1) measured three phenolic fractions in the urine by distillation. Phenols have been measured quantitatively after ethyl acetate extraction by Bray and Tho...
متن کاملInvestigation of Relationships between Urinary Biomarkers of Phytoestrogens, Phthalates, and Phenols and Pubertal Stages in Girls
BACKGROUND Hormonally active environmental agents may alter the course of pubertal development in girls, which is controlled by steroids and gonadotropins. OBJECTIVES We investigated associations of concurrent exposures from three chemical classes (phenols, phthalates, and phytoestrogens) with pubertal stages in a multiethnic longitudinal study of 1,151 girls from New York City, New York, gre...
متن کاملRelationships between urinary biomarkers of phytoestrogens, phthalates, phenols, and pubertal stages in girls
Phytoestrogens, phthalates, and phenols are estrogen-disrupting chemicals that have a pronounced effect at puberty. They are exogenous chemicals that are either plant-derived or man-made, and can alter the functions of the endocrine system and cause various health defects by interfering with the synthesis, metabolism, binding, or cellular responses of natural estrogens. Phytoestrogens, phthalat...
متن کاملPrenatal Exposure to Environmental Phenols: Concentrations in Amniotic Fluid and Variability in Urinary Concentrations during Pregnancy
BACKGROUND Maternal urinary biomarkers are often used to assess fetal exposure to phenols and their precursors. Their effectiveness as a measure of exposure in epidemiological studies depends on their variability during pregnancy and their ability to accurately predict fetal exposure. OBJECTIVES We assessed the relationship between urinary and amniotic fluid concentrations of nine environment...
متن کاملPilot Study of Urinary Biomarkers of Phytoestrogens, Phthalates, and Phenols in Girls
BACKGROUND Hormonally active environmental agents have been measured among U.S. children using exposure biomarkers in urine. However, little is known about their variation by race, age, sex, and geography, and no data exist for newly developed biomarkers. OBJECTIVE Our goal was to characterize relevant, prevalent exposures for a study of female pubertal development. METHODS In a pilot study...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1949
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)56830-7