These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: 3 beta-hydroxy-delta 5-steroid dehydrogenase activity in the rapidly growing ovarian follicles of the domestic fowl (Gallus domesticus).
    Author: Armstrong DG.
    Journal: J Endocrinol; 1982 Jun; 93(3):415-21. PubMed ID: 6953161.
    Abstract:
    The total and specific activity of 3 beta-hydroxy-delta 5-steroid dehydrogenase, isocitrate dehydrogenase (NADP+) and glucose-6-phosphate dehydrogenase were measured in ovarian follicles from the domestic fowl. The enzymes were assayed in the five largest yolk-filled follicles which were sampled twice during the ovulatory cycle, at 1 h and 16 h before an expected ovulation. The total and specific activity of granulosa enzymes increased throughout the hierarchy and reached a maximum in the largest follicle. The relative increase in 3 beta-hydroxy-delta 5-steroid dehydrogenase activity was greater than that of the other two enzymes examined. The total thecal 3 beta-hydroxy-delta 5-steroid dehydrogenase activity reached a maximum in the third and fourth largest follicles. Thereafter its activity decreased up to the time of ovulation. The activity of 3 beta-hydroxy-delta 5-steroid dehydrogenase and glucose-6-phosphate dehydrogenase in follicles collected 1 h before and ovulation were significantly less than the activity in corresponding follicles collected 16 h before an ovulation.
    [Abstract] [Full Text] [Related] [New Search]