6533b850fe1ef96bd12a84d9

RESEARCH PRODUCT

Variations of vitamin D-like reactivity in the crustacean Orchestia cavimana during the molt cycle

François GrafJean-claude MeyranM.c. ChapuyS. ArnaudEvelyne Sellem

subject

VitaminMudamedicine.medical_specialtyAmphipodabiologyVitamina dbiology.organism_classificationCrustaceanMolecular biologyRadioligand Assaychemistry.chemical_compoundEndocrinologyEndocrinologyCalcitriolchemistryOrchestia cavimanaCrustaceaInternal medicinemedicineVitamin D and neurologyAnimalsAnimal Science and ZoologyReactivity (chemistry)Chromatography High Pressure Liquid

description

An investigation into vitamin D-like molecules has been performed on whole extracts of the terrestrial amphipod Orchestia cavimana, using a sensitive nonequilibrium assay employing 1,25-(OH)2 D receptor from calf thymus. Relatively large amounts of these secosteroid-like molecules were observed and they varied in concentration according to the stages of the molt cycle. The amplitude of these variations reaches a ratio of about 40 from the minimum in premolt to the intermolt sharp peak.

https://doi.org/10.1016/0016-6480(91)90070-m