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PMID |
Sentence |
1 |
6295857
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Similarly, IGF-I and IGF-II competed for occupancy of the IM-9 insulin receptor, with 50% displacement of 125I-insulin occurring at peptide concentrations of 3.5 x 10(-9) M (insulin), 3.5 x 10(-8) M (IGF-II), and 3 x 10(-7) M (IGF-I).
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2 |
2969796
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That insulin may be involved in the pathogenesis of these growth-related abnormalities despite resistance to its metabolic effects mediated through the insulin receptor is suggested by the known ability of high concentrations of insulin to stimulate DNA synthesis and cell proliferation in vitro through the insulin-like growth factor I (IGF-I) receptor.
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3 |
2972576
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These results indicate that 1) the defect is specific to the insulin-receptor binding in these patients, 2) insulin and IGF-I activate glucose incorporation and alpha-aminoisobutyric acid uptake mainly through their own specific receptors, but 3) the IGF-I receptor appears to have a more important role in stimulating thymidine incorporation than the insulin receptor in physiological condition or, alternatively, an unknown postreceptor process with cascade signal transmission may overcome the decreased insulin-receptor binding to produce a normal dose-response curve.
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4 |
2668084
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In contrast to the study in intact cells, proinsulin and IGF-I as well as other insulin analogues had the same relative binding activity to bind to the partially lectin-purified insulin receptor preparations from both the patient's and the control cells.
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5 |
1719386
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These results, together with the fact that H4-II-E cells do not possess IGF-I receptors with which insulin might cross-react, suggest that insulin acts via the insulin receptor.
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6 |
8419148
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In general, the dephosphorylation of IGF-I receptor follows a pattern similar to that of insulin receptor except in red skeletal muscle in which it is not modified.
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7 |
7497000
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Despite its structural similarity to the insulin receptor, the IGF-I receptor is mainly involved in the transduction of growth and differentiation types of signals.
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8 |
8910597
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The results of these separate analyses reveal that IGF-1 stimulates phosphorylation predominantly on tyrosyl residues Y132/141 of the second intracellular loop of the beta2-adrenergic receptor rather than the C-terminal region targeted by the activated insulin receptor (Y350/354, Y364), although both growth factors block beta-adrenergic agonist action.
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9 |
12471165
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Combined knockout studies of insulin and Igf1 receptors indicate that the insulin receptor also promotes embryonic growth.
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10 |
12730241
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Because the other known PH-PTB proteins (insulin receptor substrates: IRS-1, IRS-2, IRS-3, and IRS-4, and the downstream of kinases: DOK-1, DOK-2, and DOK-3) are substrates of insulin and insulin-like growth factor (IGF)-1 receptors, we asked whether these new proteins, termed IRS5/DOK4 and IRS6/DOK5, might also have roles in insulin and IGF-1 signaling.
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11 |
18309377
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Inhibiting the insulin receptor with neutralizing antibodies or antisense oligonucleotides had no effect on EPC outgrowth.(1) In contrast, targeting the human insulin-like growth factor 1 (IGF-1) receptor with neutralizing antibodies significantly suppressed insulin-induced outgrowth of EPCs from both healthy controls and patients with type 2 diabetes.
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12 |
21330367
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Transgenic mice that lack neuronal insulin receptor expression in the brain (NIRKO mice) were unable to mount the full hyperthermic response to IGF-1, suggesting that the IGF-1 mediated hyperthermia is partly dependent on expression of functional neuronal insulin receptors.
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13 |
7983791
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Recent reports provide evidence that mutations in the insulin-receptor gene are, at least in pant, the cause of this syndrome, and that recombinant IGF-I (insulin-like growth factor-1) reduces hyperglycemia in patients of this syndrome.
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14 |
21540285
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Some studies suggest that targeting insulin receptor signaling may be an important alternative or adjunct to targeting IGF-I receptor signaling.
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15 |
21435176
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Whereas the density of brain insulin receptor decreases during age, IGF-1 receptor increases, suggesting that specific insulin-mediated signals is involved in aging and possibly in cognitive decline.
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16 |
11272176
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Insulin receptor substrate (IRS) proteins mediate a variety of the metabolic and growth-promoting actions of insulin and IGF-1.
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