## Background: Long-term treatment of noble (nbl) rats with testosterone (t) and estradiol-17 beta (e2) induces dysplasia in the dorsolateral lobe (dlp) but not in the ventral lobe (vp) of the rat prostate. the aim of this study was to determine whether metabolic conversion of e2 to catechol estrog
Effect of s-triazine compounds on testosterone metabolism in the rat prostate
✍ Scribed by J. Kniewald; V. Osredečki; T. Gojmerac; V. Zechner; Z. Kniewald
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 393 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0260-437X
No coin nor oath required. For personal study only.
✦ Synopsis
The influence of striazine compounds (atrazine, prometryne and deethylatrazine) on testosterone conversion and Sa-dihydrotestosterone-receptor complex formation was studied in vitro and in vivo in the rat prostate. A marked in vitro influence of atrazine and prometryne (from 0.465 to 1.392 pmol) and their mixtures (in total concentration, 0.928 pmol) on 5a-dihydrotestosterone formation was detected. Sa-Dihydrotestosteronespecific receptor complex formation was inhibited in vitro by ca. 0.5 pmol of atrazine or deethylatrazine and only in vivo by 6 mg of atrazine 100 g-' body wt. daily during 7 days in the prostate cytosol. The inhibition of the enzymic activities responsible for testosterone conversion and steroid hormonereceptor complex formation was non-competitive and reversible, and striazine compounds act as antiandrogens.
📜 SIMILAR VOLUMES
The effect of multiple doses of cadmium on carbohydrate metabolism in rats was studied. The treated groups received two dose levels, 0.25 and 0.50 mg cadmium/kg ip every 2nd day for 20 doses. Plasma glucose, immunoresponsive insulin levels, and body weights were determined before treatment and after
Much information concerning the mechanisms of cell respiration has been obtained through the use of narcotics, such as the barbiturates, urethane and chloretone. These substances in general inhibit respiratory processes and show a certain selectivity of action (cf. Quastel, '39). Recently a new ser
## Abstract Chronic (3 months) lead exposure increased the quinonoid dihydropteridine reductase activity and the tetrahydrobiopterin content but did not affect the GTP‐cyclohydrolase activity and the dihydrobiopterin content. These results suggest that lead intoxication may enhance dopamine metabol