scholarly journals Structural Basis and Genotype–Phenotype Correlations of INSR Mutations Causing Severe Insulin Resistance

Diabetes ◽  
2017 ◽  
Vol 66 (10) ◽  
pp. 2713-2723 ◽  
Author(s):  
Jun Hosoe ◽  
Hiroko Kadowaki ◽  
Fuyuki Miya ◽  
Katsuya Aizu ◽  
Tomoyuki Kawamura ◽  
...  
Diabetes ◽  
1984 ◽  
Vol 33 (12) ◽  
pp. 1133-1137 ◽  
Author(s):  
B. R. Blazar ◽  
C. B. Whitley ◽  
A. E. Kitabchi ◽  
M. Y. Tsai ◽  
J. Santiago ◽  
...  

10.1038/ng926 ◽  
2002 ◽  
Vol 31 (4) ◽  
pp. 379-384 ◽  
Author(s):  
David B. Savage ◽  
Maura Agostini ◽  
Inês Barroso ◽  
Mark Gurnell ◽  
Jian'an Luan ◽  
...  

1982 ◽  
Vol 243 (1) ◽  
pp. E15-E30 ◽  
Author(s):  
J. M. Olefsky ◽  
O. G. Kolterman ◽  
J. A. Scarlett

Resistance to the action of insulin can result from a variety of causes, including the formation of abnormal insulin or proinsulin molecules, the presence of circulating antagonists to insulin or the insulin receptor, or defects in insulin action at the target tissue level. Defects of the latter type are characteristic of obesity and of noninsulin-dependent diabetes mellitus. Analysis of the nature of the insulin resistance in those disorders has been investigated in intact subjects with the use of the euglycemic glucose clamp technique, and both insulin receptors and insulin-mediated glucose metabolism have been studied in adipocytes and monocytes from affected individuals. In both conditions, the cause of insulin resistance is heterogeneous. In some, insulin resistance appears to be due to a defect in the insulin receptor, whereas others have a defect both in the receptor and at the postreceptor level. In both groups, more severe insulin resistance is due to the postreceptor lesion and is correctable with appropriate therapy.


2017 ◽  
Vol 3 (1) ◽  
pp. e17-e21
Author(s):  
Raya A. Almazrouei ◽  
Juma Alkaabi ◽  
Fatima M. Alkaabi ◽  
Hanan Alshamsi

2000 ◽  
Vol 88 (6) ◽  
pp. 2116-2122 ◽  
Author(s):  
Maria Niklasson ◽  
Peter Daneryd ◽  
Peter Lönnroth ◽  
Agneta Holmäng

Administration of testosterone (T) to oophorectomized (Ovx) female rats is followed by severe insulin resistance, localized to postreceptor cellular events in the muscle. In this study, intervention by exercise was introduced to examine whether circulatory adaptations are involved in insulin resistance. Two groups of Ovx rats were studied: one group was given T (Ovx+T); another group had free access to running wheels (Ovx+T+Ex). In addition, one control group (sham operated) was studied. Insulin sensitivity was measured with the euglycemic hyperinsulinemic clamp technique (submaximal) for 150 min. Muscle interstitial glucose and insulin concentrations were measured by microdialysis. The measurements showed that, in Ovx+T rats, the onset of insulin action was significantly ( P < 0.05) slower during the first 95 min of the clamp compared with that in Ovx+T+Ex and controls. Muscle interstitial concentrations of insulin but not glucose were lower in both Ovx+T and Ovx+T+Ex rats than in controls throughout the clamp. It was concluded that physical exercise prevented the slow onset of insulin action in Ovx+T rats without changing the distribution time of muscle interstitial insulin. The results indicate that hyperandrogenicity is characterized by delayed muscle insulin action. Physical exercise reverses these defects without any beneficial effect on muscle interstitial insulin concentrations.


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