自主神经功能衰退的病人有更多数量的α受体,说明了这些患者在去神经后对去甲肾上腺素的敏感性增高。据报道有自主神经病变的糖尿病患者其β及α受体虽正常或降低,但他们的心血管和激素反应却是增高的。 Patients with autonomic dysfunction have a greater number of alpha receptors, indicating that these patients have increased norepinephrine sensitivity after denervation. It is reported that diabetic patients with autonomic neuropathy, although their beta and alpha receptors are normal or decreased, but their cardiovascular and hormonal reactions are increased.