Serum testosterone

PCB analysis was performed in the Exposure Assessment Laboratory of the University at Albany, Rensselaer, New York. Concentrations of serum PCB congeners were determined using ultratrace analytical methods using dual-column gas chromatography with electron-capture detection. The use of dual columns allows definitive determination of 91 analytical peaks that measure levels of 101 PCB congeners, DDE (the major present metabolite of DDT), mirex, and HCB ( DeCaprio et al. 2000 ). Of these, 83 peaks represent single PCB congeners, whereas 18 peaks reflect the presence of 2 or 3 different congeners. The limit of detection (LOD) for individual congeners ranged from ppb to ppb (median, ppb). The results are reported both on the basis of wet weight, treating total serum lipids as a covariate, and after lipid adjustment. The toxicants studied are fat-soluble substances found in the lipid layer, and theoretically the measurement should be more accurate if PCBs are adjusted for the amount of lipids in the serum sample. Recent reports, however, have suggested that lipid-adjusted levels are particularly prone to bias ( Schisterman et al. 2005 ), so we reported both wet-weight values with lipids as a covariate and lipid-adjusted values. Lipid-based values were determined by dividing the wet-weight value of PCBs by total serum lipids as calculated from the above-mentioned Philips formula, then multiplying by a factor of 10 5 for unit adjustment (nanograms of toxicant per gram of lipid). Values < LOD were set at LOD/2.

Benzophenone-3 ( Table 2 ). Male adolescents in the 3rd and 4th quartiles of BP-3 had significantly lower TT [–%; 95% confidence interval (CI): –%, –%; and –%; 95% CI: –%, –%, respectively, based on model 1] than males in the lowest quartile. Although the association was strongest for the 3rd quartile, the overall trend was significant ( p -trend = ). This pattern of associations persisted following adjustment for BPA, TCS, and ΣPAR (model 2). In female adolescents, TT was significantly higher for girls in the second versus first quartile of BP-3 exposure, but positive associations were closer to the null and nonsignificant for the 3rd and 4th quartiles of exposure ( p -trend ). Associations were similar after adjustment for BPA, TCS, and ΣPAR, but no longer significant for quartile 2. There were no significant associations between TT and BP-3 in male or female children, and no evidence of consistent trends with increasing quartiles of exposure.

As oral phosphodiesterase-5 inhibitor therapy has become the first-line treatment of erectile dysfunction (ED), common approaches in the evaluation of ED have been largely abandoned. Not only is routine hormone analysis no longer widely recommended, but most specialists perform serum testosterone level testing only in the most complex cases of ED. This article explores the rationale for including serum testosterone analysis as part of the initial screening of patients with ED. The use of routine serum testosterone testing is advocated for its efficacy in the diagnosis and treatment of hypogonadism and pituitary disorders associated with ED.

This study was a 12-week double blind placebo-controlled, randomized, parallel trial in which active treatment with different doses of Maca Gelatinizada was compared with placebo. The study aimed to demonstrate if effect of Maca on subjective report of sexual desire was because of effect on mood or serum testosterone levels. Men aged 21-56 years received Maca in one of two doses: 1,500 mg or 3,000 mg or placebo. Self-perception on sexual desire, score for Hamilton test for depression, and Hamilton test for anxiety were measured at 4, 8 and 12 weeks of treatment. An improvement in sexual desire was observed with Maca since 8 weeks of treatment. Serum testosterone and oestradiol levels were not different in men treated with Maca and in those treated with placebo (P:NS). Logistic regression analysis showed that Maca has an independent effect on sexual desire at 8 and 12 weeks of treatment, and this effect is not because of changes in either Hamilton scores for depression or anxiety or serum testosterone and oestradiol levels. In conclusion, treatment with Maca improved sexual desire.

Serum testosterone

serum testosterone

This study was a 12-week double blind placebo-controlled, randomized, parallel trial in which active treatment with different doses of Maca Gelatinizada was compared with placebo. The study aimed to demonstrate if effect of Maca on subjective report of sexual desire was because of effect on mood or serum testosterone levels. Men aged 21-56 years received Maca in one of two doses: 1,500 mg or 3,000 mg or placebo. Self-perception on sexual desire, score for Hamilton test for depression, and Hamilton test for anxiety were measured at 4, 8 and 12 weeks of treatment. An improvement in sexual desire was observed with Maca since 8 weeks of treatment. Serum testosterone and oestradiol levels were not different in men treated with Maca and in those treated with placebo (P:NS). Logistic regression analysis showed that Maca has an independent effect on sexual desire at 8 and 12 weeks of treatment, and this effect is not because of changes in either Hamilton scores for depression or anxiety or serum testosterone and oestradiol levels. In conclusion, treatment with Maca improved sexual desire.

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