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Differential cloning of growth hormone-regulated hepatic transcripts in the aged rat
KTH, Superseded Departments, Biotechnology.ORCID iD: 0000-0003-0996-1644
KTH, Superseded Departments, Biotechnology.ORCID iD: 0000-0003-4313-1601
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2000 (English)In: Endocrinology, ISSN 0013-7227, E-ISSN 1945-7170, Vol. 141, no 3, 910-921 p.Article in journal (Refereed) Published
Abstract [en]

It has been suggested that aging or at least some of its symptoms are related to a physiological decline in GH levels with age. This study was performed to elucidate age-related changes in GH-dependent effects at the level of gene expression. Through the application of complementary DNA representational difference analysis (RDA) we have identified gene products that are reduced during aging in rat liver. The expression of these genes was restored upon GH treatment. Results from reverse Northern and ribonuclease protection analysis confirmed that the RDA products were truly differentially expressed. In addition to well characterized GH-regulated genes, including CYP2C12, CYP2C13, and alpha(2u)-globulin, we demonstrate the differential expression of at least 11 genes previously not known to be under GH control. Several hepatic transcripts encoding enzymes and receptors involved in the metabolism of protein, carbohydrates, and lipids were identified. Other RDA products consisted of transcripts encoding proteins involved in ATP synthesis, detoxification of reactive oxygen species, or immune responses. This list of GH-regulated genes in the old rat may shed further light on the action and mechanism behind the positive effects of GH on, for example, body composition and the immune system that have been observed in different animal and human studies.

Place, publisher, year, edition, pages
2000. Vol. 141, no 3, 910-921 p.
Keyword [en]
glutathione-s-transferase, d-dopachrome tautomerase, migration inhibitory factor, mitochondrial atp synthase, gh-replacement therapy, acetyl-coa carboxylase, coenzyme-a carboxylase, fatty-acid synthesis, gene-expression, factor-i
Identifiers
URN: urn:nbn:se:kth:diva-19928ISI: 000088385700008OAI: oai:DiVA.org:kth-19928DiVA: diva2:338620
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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