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2 records – page 1 of 1.

Action of luteinizing hormone-releasing hormone in rat ovarian cells : hormone production and signal transduction

https://cwslc.andornot.com/en/permalink/catalog113996
Wang, Jian. [Vancouver, BC?]: University of British Columbia , 1989.
Website
http://hdl.handle.net/2429/29313
Material Type
Thesis
Call Number
Thesis Shelf
The present study was conducted to investigate the hypothesis that membrane phosphoinositide breakdown may participate in the actions of luteinizing hormone-releasing hormone (LHRH) on hormone production in the rat ovary. In granulosa cells prelabeled with [³H]-arachidonic acid or [³H]-inositol, tr…
More Information is Available
  1 website  
Website
http://hdl.handle.net/2429/29313
Author
Wang, Jian
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
1989
Subject
Faculty of Medicine
Theses
Abstract
The present study was conducted to investigate the hypothesis that membrane phosphoinositide breakdown may participate in the actions of luteinizing hormone-releasing hormone (LHRH) on hormone production in the rat ovary. In granulosa cells prelabeled with [³H]-arachidonic acid or [³H]-inositol, treatment with LHRH increased the accumulation of radiolabeled inositol lipids, diacylglycerol and free arachidonic acid, but luteinizing hormone (LH) or cholera toxin did not exert the same effect. Activation of protein kinase C by the phorbol ester, 12-0-tetradecanoyl phorbol-13-acetate (TPA) had a stimulatory action on membrane phosphoinositide breakdown.
Language
English
Material Type
Thesis
Call Number
Thesis Shelf
Websites
http://hdl.handle.net/2429/29313
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Effects and mechanisms of growth differentiation factor 9 on activin A-regulated inhibin B and progesterone production in human granulosa cells

https://cwslc.andornot.com/en/permalink/catalog113951
Shi, Fengtao. [Vancouver, BC?]: University of British Columbia , 2010.
Website
http://hdl.handle.net/2429/28961
Material Type
Thesis
Call Number
Thesis Shelf
Activin A (homodimer of inhibin βA-subunit) is known to increase inhibin βB-subunit and inhibin B (heterodimer of inhibin α- and βB-subunit) levels and decrease progesterone accumulation in human granulosa cells. Growth differentiation factor 9 (GDF9) is a potent paracrine regul…
More Information is Available
  1 website  
Website
http://hdl.handle.net/2429/28961
Author
Shi, Fengtao
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2010
Subject
Faculty of Medicine
Theses
Abstract
Activin A (homodimer of inhibin βA-subunit) is known to increase inhibin βB-subunit and inhibin B (heterodimer of inhibin α- and βB-subunit) levels and decrease progesterone accumulation in human granulosa cells. Growth differentiation factor 9 (GDF9) is a potent paracrine regulator of ovarian function, but its overall effects, particularly relating to activin A actions, are unknown. We examined the potential crosstalk between activin A and GDF9 in primary cultures of human granulosa-lutein (hGL) cells. Pretreatment of hGL cells with GDF9 for 24 h resulted in an increased expression of activin receptors and Smad2/3, and decreased inhibitory Smad7 activity. These effects were attenuated by BMP type II receptor ectodomain (BMPR2 ECD), a GDF9 antagonist.
Language
English
Material Type
Thesis
Call Number
Thesis Shelf
Websites
http://hdl.handle.net/2429/28961
Show Less