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PMID |
Sentence |
1 |
2430989
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These findings raise the questions of whether maternal SMBP levels influence the amount of IGF-I available for the fetal-placental unit and whether IGF-II participates in glucose homeostasis in the fetus.
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2 |
2644137
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This enzyme degraded 125I-labeled insulin-like growth factor I (IGF-I) more slowly than 125I-IGF-II and degraded IGF-II more slowly than 125I-insulin.
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3 |
2542108
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In competition experiments, IGF-I competed for binding more effectively than rat IGF-II or insulin.
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4 |
1708099
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IGF-II did not stimulate tyrosine phosphorylation of its own receptor, but was 25% as active as IGF-I in stimulating phosphorylation of the IGF-I receptor.
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5 |
1708099
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These data indicate that the IGF-I receptor can be activated upon binding of IGF-I, and to a lesser extent IGF-II, in intact cells to mediate cellular events.
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6 |
1649393
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However, progestins also increased the secretion of IGF-II, a ligand for the IGF-I receptor.
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7 |
1386818
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IGF-I stimulated renin secretion in perifusions as early as 30 min, whereas IGF-II had no effect.
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8 |
1439105
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Little is known about the physiological significance of IGF-II, whose concentration, at variance with IGF-I, is not increased in acromegalic subjects.
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9 |
7683646
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Thus, the determinants of IGF-II binding to IGFBPs partially overlap those for the IGF-II/mannose 6-phosphate receptor and overlap those for the IGF-I receptor to a lesser extent.
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10 |
7504689
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IGF-I and IGFBP-3 were increased 10- and 13-fold in rubeosis (P << 0.01) compared with no ischemia (n = 10), while IGF-II and IGFBP-2 were elevated 2.7- and 4.3-fold (P < 0.01).
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11 |
7504689
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Vitreous from patients with proliferative diabetic retinopathy but without rubeosis (n = 16) contained 2.5- and 2.2-fold elevated levels of IGF-I and of IGFBP-2 (P < 0.05), while IGF-II and IGFBP-3 were increased 1.4- and 1.6-fold, which was not significant.
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12 |
8010960
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In order to explore which receptor mediated the IGF-II effect, we compared glucose uptake induced by IGF-II and two IGF-II analogues: [Leu27]IGF-II, with high affinity for the IGF-II/Man 6-P receptor but markedly reduced affinity for the IGF-I and insulin receptors, and [Arg54,Arg55]IGF-II was similar to that of IGF-II, whereas [Leu27]IGF-II had a very diminished effect.
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13 |
8039596
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Of these growth factors, IGF-I was the most potent, with a significant effect at 0.6 nM and maximal effects at 6.0 nM, followed by IGF-II and insulin.
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14 |
7530649
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A 150-kDa pool, isolated after neutral Sephadex G-200 gel filtration of adult rat serum, bound IGF-II with approximately 80-fold greater affinity than IGF-I, but did not contain immunoprecipitable IGF-II/mannose-6-phosphate receptors, which bind IGF-II with the same preferential affinity.
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15 |
12675960
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Analysis by quintiles of nutrient intake showed a significant increase in circulating IGF-I concentration with increasing dietary fat intake (F for trend=3.9, ), saturated fat intake and for protein intake There was also a significant increase in IGF-II by quintiles of dietary protein intake There was a trend for increasing IGF-I with increasing energy intake.
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16 |
12604504
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Addition of IGFBPs dose dependently reduced the KIRA signal, whereas addition of IGF-II to preformed complexes (1:1 molar ratio) of IGF-I and IGFBP dose dependently increased IGF-I bioactivity by displacement of bound IGF-I.
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17 |
17479439
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Coincubation of bovine adrenocortical cells with purified IGFBP-1 (30 nM) induced a time--and dose-dependent potentiating effect (38+/-2%) on IGF-I-stimulated (6.5 nM) cortisol-secretion, wheras the IGF-II induced steroidogenic effect was inhibited (40+/-3%) by IGFBP-1.
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18 |
17479439
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IN CONCLUSION, these results demonstrate that in bovine adrenocortical cells IGFBP-1 time- and dose-dependently inhibits the steroidogenic effect of IGF-II and stimulates the effect of IGF-I.
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19 |
20929508
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Hyperglycemia increases insulin-like growth factors (IGFs), especially IGF2, which acts via the IGF1 receptor present on renal cells.
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