Microsoft PowerPoint - S14-1_\300\374\274\272\277\317 [\310\243 ...
Microsoft PowerPoint - S14-1_\300\374\274\272\277\317 [\310\243 ...
Microsoft PowerPoint - S14-1_\300\374\274\272\277\317 [\310\243 ...
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Type B insulin resistance "Spare receptor hypothesis" When IR-A titers are relatively low, insulin agonist effectsmay be near maximal with little effect on insulin receptordegradation rate or receptor number, as only a smallfraction of insulin receptors are occupied When IR-A titers are high, binding of IR-A to receptors isnear maximal, resulting in receptor downregulation,decreased receptor number, insulin resistance, andhyperglycemia