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Effects of liver-de...
Effects of liver-derived insulin-like growth factor I on bone metabolism in mice.
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- Sjögren, Klara, 1970 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för internmedicin,Institute of Internal Medicine, Dept of Medicine
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Sheng, Matilda (författare)
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- Movérare, Sofia (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin,Institute of Internal Medicine
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Liu, Jun-Li (författare)
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- Wallenius, Kristina, 1973 (författare)
- Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Wallenberg Laboratory
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- Törnell, Jan, 1960 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysiologi och farmakologi, Avdelningen för fysiologi,Institute of Physiology and Pharmacology, Dept of Physiology
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- Isaksson, Olle, 1943 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin,Institute of Internal Medicine
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- Jansson, John-Olov, 1954 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin,Institute of Internal Medicine
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Mohan, Subburaman (författare)
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- Ohlsson, Claes, 1965 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för internmedicin,Institute of Internal Medicine, Dept of Medicine
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(creator_code:org_t)
- 2002
- 2002
- Engelska.
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Ingår i: Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research. - 0884-0431. ; 17:11, s. 1977-87
- Relaterad länk:
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https://gup.ub.gu.se...
Abstract
Ämnesord
Stäng
- Insulin-like growth factor (IGF) I is an important regulator of both skeletal growth and adult bone metabolism. To better understand the relative importance of systemic IGF-I versus locally expressed IGF-I we have developed a transgenic mouse model with inducible specific IGF-I gene inactivation in the liver (LI-IGF-I-/-). These mice are growing normally up to 12 weeks of age but have a disturbed carbohydrate and lipid metabolism. In this study, the long-term effects of liver-specific IGF-I inactivation on skeletal growth and adult bone metabolism were investigated. The adult (week 8-55) axial skeletal growth was decreased by 24% in the LI-IGF-I-/- mice whereas no major reduction of the adult appendicular skeletal growth was seen. The cortical cross-sectional bone area, as measured in the middiaphyseal region of the long bones, was decreased in old LI-IGF-I-/- mice. This reduction in the amount of cortical bone was caused mainly by decreased periosteal circumference and was associated with a weaker bone determined by a decrease in ultimate load. In contrast, the amount of trabecular bone was not decreased in the LI-IGF-I-/- mice. DNA microarray analysis of 30-week-old LI-IGF-I-/- and control mice indicated that only four genes were regulated in bone whereas approximately 40 genes were regulated in the liver, supporting the hypothesis that liver-derived IGF-I is of minor importance for adult bone metabolism. In summary, liver-derived IGF-I exerts a small but significant effect on cortical periosteal bone growth and on adult axial skeletal growth while it is not required for the maintenance of the trabecular bone in adult mice.
Nyckelord
- Absorptiometry
- Photon
- Animals
- Biological Markers
- blood
- Bone Density
- Bone Development
- genetics
- Bone Resorption
- Bone and Bones
- metabolism
- Gene Expression Regulation
- Developmental
- Insulin-Like Growth Factor I
- genetics
- metabolism
- Liver
- physiology
- Mechanics
- Mice
- Mice
- Transgenic
- Oligonucleotide Array Sequence Analysis
- Organ Specificity
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
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Sjögren, Klara, ...
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Sheng, Matilda
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Movérare, Sofia
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Liu, Jun-Li
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Wallenius, Krist ...
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Törnell, Jan, 19 ...
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visa fler...
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Isaksson, Olle, ...
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Jansson, John-Ol ...
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Mohan, Subburama ...
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Ohlsson, Claes, ...
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Journal of bone ...
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Göteborgs universitet