منابع مشابه
The Relationship between Plasma Antioxidant Enzymes Activity and Sex Hormones during the Menstrual Cycle
Abstract Background and objective: There is increasing evidence for the role of oxidative stress in female reproductive tract. The purpose of this study was to determine the activity of antioxidant enzymes during menstrual cycle. In addition, the relationship between activity of antioxidant enzyme and sex hormones was evaluated. Materials and methods: In this study the activity of superoxi...
متن کاملCarotenoids and menstrual cycle phase in young women.
An association between serum carotenoid concentrations and risk for certain cancers has been observed in epidemiological studies. Determinants of serum carotenoid concentrations are known to include dietary intake, plasma lipid concentrations, and body mass. Menstrual cycle phase, which has not been adequately addressed in previous studies, has been suggested to be a possible additional factor ...
متن کاملSerotonin concentrations in plasma and variations during the menstrual cycle.
We used a specific and sensitive radioenzymatic method to establish a reference interval for the concentration of serotonin in platelet-poor plasma in 98 healthy volunteers (49 men, 49 women). The interval was 0-11 nmol/L with a median of 2.8 nmol/L. No difference in concentration in relation to sex or age was observed. In a group of eight very old volunteers (ages 86-92 years), however, concen...
متن کاملChanges in plasma leptin during the menstrual cycle.
OBJECTIVE To measure the plasma concentration of leptin, which is expressed in ovarian follicles and may have a reproductive function, in healthy women during the menstrual cycle. DESIGN This study included nine women with regular menstrual cycles (mean+/-S.E.M. age 28+/-2 years: body mass index 23.9+/-1.8 kg/m2). From the onset of menses, fasting blood samples were collected every 1-2 days t...
متن کاملCarotenoids and the Visual Cycle
1. Carotenoids have been identified and their quantities measured in the eyes of several frog species. The combined pigment epithelium and choroid layer of an R. pipiens or esculenta eye contain about 1gamma of xanthophyll and about 4gamma of vitamin A. During light adaptation the xanthophyll content falls 10 to 20 per cent. 2. Light adapted retinas contain about 0.2-0.3 gamma of vitamin A alon...
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ژورنال
عنوان ژورنال: The American Journal of Clinical Nutrition
سال: 1996
ISSN: 0002-9165,1938-3207
DOI: 10.1093/ajcn/64.4.640