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蜕皮甾体:致倦库蚊(半翅目,猎蝽科)中20-羟基蜕皮酮失活的生化机制

Ecdysteroids: biochemical mechanism of 20-hydroxyecdysone inactivation in Triatoma infestans (Hemiptera, Reduviidae).

作者信息

Stoka A, Noriega F G

出版信息

Acta Physiol Lat Am. 1982;32(4):321-9.

PMID:6764707
Abstract

When 3H-20-hydroxyecdysone was injected into Triatoma infestans during the fifth nymphal instar, it was converted to very polar metabolites (peak 1). The polar metabolites were glucuronoconjugates of 20-hydroxyecdysone. Acetylation of the conjugates followed by hydrolysis with glucuronidase gave a major labelled product: 20-hydroxyecdysone and minor peaks corresponding to a mixture of 20-hydroxyecdysone acetates. These results indicated that the 2,3,22,25-glucuronoconjugates of 20-hydroxyecdysone were the principal products in the inactivation process.

摘要

在第五若虫龄期向骚扰锥蝽注射3H-20-羟基蜕皮酮后,它会转化为极性很强的代谢产物(峰1)。这些极性代谢产物是20-羟基蜕皮酮的葡萄糖醛酸结合物。结合物经乙酰化后再用葡萄糖醛酸酶水解,得到一种主要的标记产物:20-羟基蜕皮酮以及对应于20-羟基蜕皮酮醋酸酯混合物的小峰。这些结果表明,20-羟基蜕皮酮的2,3,22,25-葡萄糖醛酸结合物是失活过程中的主要产物。

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1
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