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Growth hormone rece...
Growth hormone receptor deficiency results in blunted ghrelin feeding response, obesity, and hypolipidemia in mice.
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- Egecioglu, Emil, 1977 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology
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Bjursell, Mikael, 1977 (author)
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- Ljungberg, Anna, 1977 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology
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- Dickson, Suzanne L., 1966 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology
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Kopchick, John J (author)
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- Bergström, Göran, 1964 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Institute of Medicine, Department of Molecular and Clinical Medicine
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Svensson, Lennart (author)
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Oscarsson, Jan, 1960 (author)
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Törnell, Jan, 1960 (author)
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Bohlooly-Yeganeh, Mohammad, 1966 (author)
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(creator_code:org_t)
- American Physiological Society, 2006
- 2006
- English.
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In: American journal of physiology. Endocrinology and metabolism. - : American Physiological Society. - 0193-1849 .- 1522-1555. ; 290:2
- Related links:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We have previously shown that growth hormone (GH) overexpression in the brain increased food intake, accompanied with increased hypothalamic agouti-related protein (AgRP) expression. Ghrelin, which stimulates both appetite and GH secretion, was injected intracerebroventricularly to GHR-/- and littermate control (+/+) mice to determine whether ghrelin's acute effects on appetite are dependent on GHR signaling. GHR-/- mice were also analyzed with respect to serum levels of lipoproteins, apolipoprotein (apo)B, leptin, glucose, and insulin as well as body composition. Central injection of ghrelin into the third dorsal ventricle increased food consumption in +/+ mice, whereas no change was observed in GHR-/- mice. After ghrelin injection, AgRP mRNA expression in the hypothalamus was higher in +/+ littermates than in GHR-/- mice, indicating a possible importance of AgRP in the GHR-mediated effect of ghrelin. Compared with controls, GHR-/- mice had increased food intake, leptin levels, and total and intra-abdominal fat mass per body weight and deceased lean mass. Moreover, serum levels of triglycerides, LDL and HDL cholesterol, and apoB, as well as glucose and insulin levels were lower in the GHR-/- mice. In summary, ghrelin's acute central action to increase food intake requires functionally intact GHR signaling. Long-term GHR deficiency in mice is associated with high plasma leptin levels, obesity, and increased food intake but a marked decrease in all lipoprotein fractions.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Fysiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Physiology (hsv//eng)
Keyword
- Animals
- Body Weight
- drug effects
- Feeding Behavior
- drug effects
- Female
- Hypolipoproteinemias
- chemically induced
- physiopathology
- Injections
- Male
- Mice
- Mice
- Knockout
- Obesity
- chemically induced
- physiopathology
- Peptide Hormones
- administration & dosage
- Receptors
- Somatotropin
- deficiency
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Egecioglu, Emil, ...
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Bjursell, Mikael ...
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Ljungberg, Anna, ...
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Dickson, Suzanne ...
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Kopchick, John J
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Bergström, Göran ...
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Svensson, Lennar ...
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Oscarsson, Jan, ...
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Törnell, Jan, 19 ...
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Bohlooly-Yeganeh ...
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Basic Medicine
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and Physiology
- Articles in the publication
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American journal ...
- By the university
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University of Gothenburg