An experimental study(II) on the inhibition of prostatic hyperplasia by extract of seeds of Brassica alba / 中国中药杂志

<p><b>OBJECTIVE</b>To study the active components and their functionary mechanism of the extract of Brassica alba seeds, which inhibits experimental mice prostatic hyperplasia.</p><p><b>METHOD</b>Prostatic hyperplasia of castrated male mice induced by testosterone propionate, the penetrability of capillary vessel of mice skin induced by histamine and the endermic flesh bud of rat induced by filter paper were used as experimental models. Sinalbin and beta-sitosterol separated from seeds of Brassica alba were used to test the activities.</p><p><b>RESULT</b>Sinalbin and beta-sitosterol(16.0 mg.kg-1.d-1 and 8.0 mg.kg-1.d-1) could significantly inhibit mice prostatic hyperplasia induced by testosterone propionate and activity of serum acid phosphatase(P < 0.01 or P < 0.05), Sinalbin(16.0 mg.kg-1.d-1)could significantly inhibit the hyperplasia of endermic flesh bud in rat induced by filter paper(P < 0.05), beta-sitosterol(16.0 mg.kg-1.d-1 and 8.0 mg.kg-1.d-1) could significantly decrease the penetrability of capillary vessel of mice skin induced by histamine.</p><p><b>CONCLUSION</b>Sinalbin and beta-sitosterol have anti-androgen and anti-inflammation activities.</p>

An experimental study(I) on the inhibition of prostatic hyperplasia with extract of seeds of Brassica alba / 中国中药杂志

<p><b>OBJECTIVE</b>To study the effective fraction of the extract of seeds of Brassica alba, which inhibits experimental mice prostatic hyperplasia.</p><p><b>METHOD</b>An experimental model of prostatic hyperplasia of castrated male mice induced by testosterone propionate was made. Fractions I, II and III were prepared by extracting the seeds of Brassica alba successively with ether, ethanol and water under reflux. Total extract was prepared by extracting the seeds of Brassica alba with 60% ethanol under reflux. The total extract and the three fractions were used to test the activities.</p><p><b>RESULT</b>Total extract, fractions I and II could not only significantly inhibit mice prostatic hyperplasia induced by testosterone propionate and activity of serum acid phosphatase, but also decrease wet weight of preputial glands, while fraction III is inactive.</p><p><b>CONCLUSION</b>Extract from seeds of Brassica alba can significantly inhibit mice prostatic hyperplasia induced by exterior hormone, possessing an activity of anti-androgen. Fractions I and II show an equivalent activity of total extract, which indicate that these fractions contain active components of seeds of Brassica alba which can inhibit prostatic hyperplasia.</p>