Validating chemical methods to predict bioavailable fractions of polycyclic aromatic hydrocarbons (PAHs) by comparison with accumulation bioassays is problematic. Concentrations accumulated in soil organisms not only depend on the bioavailable fraction but also on contaminant properties. A historically contaminated soil was freshly spiked with deuterated PAHs (dPAHs). dPAHs have a similar fate ...

Pulses are commonly consumed among Indian people as sources of minerals. The objectives of this research were to assess the content of total and bioavailable calcium, inhibiting factors such as oxalate, phytate, tannin and dietary fiber and effect of cooking on bioavailable calcium in the commonly consumed pulses by Indians. The bioavailability of calcium was studied by an in vitro method using...

Introduction: Correlation between circulating sex steroid levels and breast cancer has been controversial, with measurement of free, or bioavailable hormone rarely available. Salivary hormone levels represent the bioavailable fraction. We aimed to assess correlation between salivary sex steroid levels and breast cancer prevalence. Methods: Salivary hormone levels of testosterone (T), Estradiol ...

Andropause is a syndrome described in aging males, is composed of a constellation of physical, sexual, and emotional symptoms, and is thought to be related to declining concentrations of serum testosterone. Numerous studies of testosterone replacement therapy in elderly hypogonadal males have documented the physical benefits of such treatment, but have failed to assess cognition, psychological ...

Three chick assays were conducted to determine a bioavailable Zn requirement and to establish a Zn relative bioavailability (RBV) value for tetrabasic Zn chloride [TBZC, i.e., Zn5Cl2(OH)8]. In Assay 1, 8-d-old chicks were fed a Zn-deficient soy concentrate diet (8.8 mg/kg bioavailable Zn) supplemented with 0, 5.81, 10.81, 15.10, and 20.25 mg Zn/kg from ZnSO4.7H2O for 14 d to establish a linear ...

OBJECTIVE The role of vitamin D in cardiovascular health remains debated as results have been inconsistent. Previous studies have not considered the bioavailability of 25-hydroxy vitamin D [25(OH)D]. Objectives of our study were to investigate the association between serum concentrations of total, free and bioavailable 25(OH)D and independent predictors of cardiovascular risk such as flow media...

BACKGROUND We examined if the reduced risk of breast cancer events seen among women without baseline hot flash symptoms in the Women's Healthy Eating and Living (WHEL) dietary intervention trial was related to changes in sex hormone concentrations. METHODS Baseline and year one concentrations of total and bioavailable estradiol, and testosterone and sex hormone-binding globulin (SHBG) were co...