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Alteration of spinal cord IGF-I receptors and skeletal muscle IGF-I after hind-limb immobilization in the rat

被引：14
作者：
Suliman, IA
Lindgren, JU
Gillberg, PG
Elhassan, AM
Monneron, C
Adem, A [1 ]
机构：
[1] Pharmacia Therapeut AB, Dept Pharmacol, Uppsala, Sweden
[2] Huddinge Univ Hosp, Karolinska Inst, Dept Orthopaed Surg, S-14186 Huddinge, Sweden
[3] Huddinge Univ Hosp, Karolinska Inst, Dept Clin Neurosci, S-14186 Huddinge, Sweden
来源：
NEUROREPORT | 1999年 / 10卷 / 06期
关键词：
autoradiography; IGF-I receptors; immobilization; skeletal muscle; spinal cord;
D O I：
10.1097/00001756-199904260-00007
中图分类号：
Q189 [神经科学];
学科分类号：
071006 [神经生物学];
摘要：
THE effects of 4 weeks' hind-limb immobilization on the spinal cord insulin-like growth factor-I (IGF-I) receptors and skeletal muscle IGF-I level was investigated in rats. Quantitative receptor autoradiography using [I-125]IGF-I as a ligand was performed to measure IGF-I receptors in cryosections from the lumbar region of the spinal cord. IGF-I receptor levels were significantly higher in all spinal cord laminae on the side ipsilateral to the immobilized limb than in the same spinal level of the controls. Using radioimmunoassay (RIA), IGF-I levels were significantly low in the soleus (SOL), but not the tibialis anterior (TIB) muscles, compared to the controls. The enhancement of the spinal cord IGF-I receptors after hind-limb immobilization may constitute part of the nervous system response to disuse. (C) 1999 Lippincott Williams & Wilkins.
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收藏
页码：1195 / 1199
页数：5
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