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Glutathione transferase isoenzyme patterns in the rat ovary
Wallenberg Laboratory, Stockholm University, Sweden.
Wallenberg Laboratory, Stockholm University, Sweden.
Wallenberg Laboratory, Stockholm University, Sweden.ORCID iD: 0000-0003-3927-4394
Wallenberg Laboratory, Stockholm University, Sweden.
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1997 (English)In: Chemico-Biological Interactions, ISSN 0009-2797, E-ISSN 1872-7786, Vol. 108, no 1-2, 79-93 p.Article in journal (Refereed) Published
Abstract [en]

This study was designed to investigate the expression of different isoenzymes of glutathione transferase (GST) in the rat ovary and to follow possible changes in the pattern of expression during maturation and the different stages of the oestrus cycle. The GST subunits present in the rat ovary (as analyzed by HPLC of affinity-purified GSTs) were A3, A4, M1, M2, M3 and P1. The most abundant subunit in the ovary was A3, but the mu enzymes demonstrated the largest increase (3.5-fold) when the mature ovary was compared to the immature organ. An overall decrease in GST isoenzyme content during dioestrus was observed, but there were no other recurrent changes during the oestrus cycle. Treatment of immature rats with pregnant mare's serum gonadotropin clearly demonstrated that the mu and alpha isoenzymes are up-regulated by gonadotropin stimulation, i.e. a 4-6 fold increase was seen. This treatment also elevated the P1 subunit 3-fold. At present, it is only possible to speculate concerning the mechanism(s) underlying these variations in ovarian GST expression in connection with hormonal changes. The functional significance of these variations is not yet known.

Place, publisher, year, edition, pages
Elsevier, 1997. Vol. 108, no 1-2, 79-93 p.
Keyword [en]
Isoenzymes; Multifunctional detoxifying enzymes; Oestrus cycle
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-99885ISI: 000071649600006PubMedID: 9463522OAI: diva2:658734
Available from: 2013-10-22 Created: 2013-10-22 Last updated: 2013-10-31Bibliographically approved

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Söderström, Mats
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