14-Deoxyecdysteroids in an Insect ( Gryllus bimaculatus)

Author:

Hoffmann Klaus H.1,Thiry Edeltraud1,Lafont Rene2

Affiliation:

1. Allgemeine Zoologie, Universität U lm , Albert-Einstein-Allee 11, D-7900 U lm, Bundesrepublik Deutschland

2. E.N.S. Departement de Biologie, Laboratoire de Biochimie et Physiologie du Developpement, 46 rue d’Ulm , F-75230 Paris, Cedex 05, France

Abstract

Abstract Following injection or ingestion of [3H]ecdysone and [3H]2O-hydroxyecdysone, respectively, considerable quantities of 14-deoxyecdysteroids could be extracted from gut and faeces of female adult crickets. The compounds were identified as 14-deoxyecdysone and 14-deoxy-20-hydroxyecdysone on the basis of comigration with reference substances in two HPLC systems and by its mass spectrum (only 14-deoxy-20-hydroxyecdysone). The 14-dehydroxylation is most probably caused by bacteria from the gut lumen. Feeding of [3H]ecdysone resulted in the appearance of labelled 14-deoxyecdysone also in ovaries, fat body, muscles, and rest of the body.

Publisher

Walter de Gruyter GmbH

Subject

General Biochemistry, Genetics and Molecular Biology

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4. Ecdysteroid Chemistry and Biochemistry;Insect Endocrinology;2012

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