Pharmacokinetic comparison of gossypol isomers in cattle: transfer from diet to plasma and degradation by rumen microbes

文献类型： 外文期刊

第一作者： Tang, Chao-hua

作者： Tang, Chao-hua;Liu, Jia;Zhao, Qing-yu;Zhang, Jun-min;Tang, Chao-hua;Zhao, Qing-yu;Zhang, Jun-min;Liu, Jia

作者机构：

关键词： Pharmacokinetics; Gossypol isomers; Cattle

期刊名称：JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B （ 影响因子：3.066； 五年影响因子：3.057 ）

ISSN： 1673-1581

年卷期： 2018 年 19 卷 6 期

页码：

收录情况： SCI

摘要： A pharmacokinetic comparison of gossypol isomers in cattle was made by investigating their transfer from ingested food to plasma and their degradation by rumen microbes. The gossypol isomers in whole cottonseed, plasma, and rumen fluid were determined by high-performance liquid chromatography (HPLC). The intakes of (+)- and (-)- gossypol by cows on three farms were about 5.6-8.5 and 3.8-5.9 g/(d center dot herd), respectively. The plasma gossypol concentrations increased as ingestion increased and ranged from 0.31 to 0.48 mu g/ml for the (+) form and from 0.39 to 0.59 mu g/ml for the (-) form. The (+) form was slightly predominant (58.8%-59.8%) in the gossypol ingested by the cows, whereas the (-) form predominated (54.6%-55.9%) in the plasma. An in vitro study showed that at 6 h, 67.4% and 85.7% of the (-)-gossypol were degraded in 500 and 1000 mu g/g treatment groups, respectively, and these increased to 83.6% and 92.5%, respectively, at 12 h. The regularity of the degradation of (+)-gossypol was similar to that of (-)-gossypol. These results showed that (-)-gossypol may be more persistent than (+)-gossypol in plasma, and that the degradation of the gossypol isomers in the rumen is rapid and not enantioselective in cattle.

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