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Text
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Pages
435–441
Issue
6
Volume
16
Dublin Core
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Title
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In situ hybridization study of obesity-associated alteration in growth hormone mRNA levels.
Publisher
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International journal of obesity and related metabolic disorders : journal of the International Association for the Study of Obesity
Date
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1992
1992-06
Subject
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Male; Animals; Rats; *Gene Expression Regulation; Autoradiography; Growth Hormone/*genetics/metabolism; Nucleic Acid Hybridization; Obesity/*etiology/physiopathology; Pituitary Gland/*chemistry/metabolism; Northern; Blotting; RNA; Transcription; Genetic; Zucker; Messenger/*analysis
Creator
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Ahmad I; Steggles A W; Finkelstein J A
Description
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In order to investigate whether the impaired GH secretion associated with obesity is due to a pituitary disorder we studied GH mRNA levels by in situ hybridization in genetically obese and lean Zucker rats. The levels of GH mRNA were at least two fold lower in obese rats in comparison to that in lean controls as quantified by both the scanning of autoradiographs of tissue sections and Northern blot analysis. Quantification of somatotrophs revealed no significant difference in their number between lean and obese rat pituitaries. It is therefore likely that the attenuated GH mRNA levels in genetically obese Zucker rats are due to a decrease in GH transcripts per somatotroph rather than a result of a pituitary defect involving a preferential decrease in somatotroph population.
Rights
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Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
*Gene Expression Regulation
1992
Ahmad I
Animals
Autoradiography
Blotting
Finkelstein J A
Genetic
Growth Hormone/*genetics/metabolism
International journal of obesity and related metabolic disorders : journal of the International Association for the Study of Obesity
Male
Messenger/*analysis
Northern
Nucleic Acid Hybridization
Obesity/*etiology/physiopathology
Pituitary Gland/*chemistry/metabolism
Rats
RNA
Steggles A W
Transcription
Zucker