Freies TestosteronStudienlage & Dosis

Top-Studien zu Freies Testosteron

Sortiert nach einflussreichen Zitationen und Erscheinungsjahr.

1. 01

   Measures of bioavailable serum testosterone and estradiol and their relationships with muscle strength, bone density, and body composition in elderly men.

   The Journal of clinical endocrinology and metabolism·2000141 einflussreiche Zitationen

   In the present cross-sectional study of 403 independently living elderly men, we tested the hypothesis that the decreases in bone mass, body composition, and muscle strength with age are related to the fall in circulating endogenous…

2. 02

   Frequent occurrence of hypogonadotropic hypogonadism in type 2 diabetes.

   The Journal of clinical endocrinology and metabolism·2004120 einflussreiche Zitationen

   Type 2 diabetes is associated with lower total testosterone (T) levels in cross-sectional studies. However, it is not known whether the defect is primary or secondary. We investigated the prevalence of hypogonadism in type 2 diabetes by…

3. 03

   Bioavailable testosterone and depressed mood in older men: the Rancho Bernardo Study.

   The Journal of clinical endocrinology and metabolism·1999·n=856115 einflussreiche Zitationen

   A cross-sectional population-based study examined the association between endogenous sex hormones and depressed mood in community-dwelling older men. Participants included 856 men, ages 50-89 yr, who attended a clinic visit between…

4. 04

   Increasing insulin resistance is associated with a decrease in Leydig cell testosterone secretion in men.

   The Journal of clinical endocrinology and metabolism·2005103 einflussreiche Zitationen

   Insulin resistance is associated with low testosterone (T) levels in men, the mechanism of which is unclear. Thus, the aim of this study was to evaluate the hypothalamic-pituitary-gonadal axis in men with a spectrum of insulin sensitivity.…

5. 05

   Longitudinal assessment of serum free testosterone concentration predicts memory performance and cognitive status in elderly men.

   The Journal of clinical endocrinology and metabolism·200286 einflussreiche Zitationen

   Circulating testosterone (T) levels have behavioral and neurological effects in both human and nonhuman species. Both T concentrations and neuropsychological function decrease substantially with age in men. The purpose of this prospective,…

6. 06

   Evaluation of assays available to measure free testosterone.

   Metabolism: clinical and experimental·2002·n=1678 einflussreiche Zitationen

   This study compared the results of various testosterone assays in a cross-sectional study of 50 male subjects age 28 to 90 years. The purpose of the study was to determine the relationship of the various testosterone assays to one another.…

7. 07

   Free testosterone and risk for Alzheimer disease in older men.

   Neurology·200473 einflussreiche Zitationen

   <h4>Objective</h4>To investigate the relationships between age-associated decreases in endogenous serum total testosterone (T) and a free T index (FTI) in men and the subsequent development of Alzheimer disease (AD).<h4>Method</h4>The…

8. 08

   Testosterone and estradiol among older men.

   The Journal of clinical endocrinology and metabolism·2006·n=2.62368 einflussreiche Zitationen

   <h4>Context</h4>Testosterone and estradiol levels decline with age in men. This change may affect multiple clinical outcomes, but there have been few reports of the distribution and correlates of testosterone and estradiol concentrations…

9. 09

   Measurement of free testosterone in normal women and women with androgen deficiency: comparison of methods.

   The Journal of clinical endocrinology and metabolism·2004·n=14765 einflussreiche Zitationen

   Androgen deficiency in women is increasingly recognized as a new clinical syndrome and has raised our awareness of the importance of accurate and well-validated measurements of serum free testosterone (T) concentrations in women.…

10. 10

    Validity of free testosterone and free estradiol determinations in serum samples from postmenopausal women by theoretical calculations.

    Cancer epidemiology, biomarkers &amp; prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology·200260 einflussreiche Zitationen

    In this study, we validated measurements of free testosterone (fT) and free estradiol (fE(2)) concentrations calculated from total serum concentrations of testosterone (T), estradiol (E(2)), and sex hormone-binding globulin (SHBG),…