Barnett A H, Chapman C, Gailer K, Hayter C J
Postgrad Med J. 1980 Jan;56(651):11-4. doi: 10.1136/pgmj.56.651.11.
The effect of the dopamine agonist, bromocriptine, and the dopamine antagonist, metoclopramide, on glucose tolerance was examined in maturity onset diabetics and normal subjects. After bromocriptine there was a lowered fasting blood glucose and improved glucose tolerance in the diabetics. The controls showed an initial improvement in glucose tolerance. A reduction in insulin levels and a marked fall in plasma prolactin was observed in all subjects. Growth hormone concentrations were low and unaffected in the diabetics, and there was an inconsistent rise in the normals. After metoclopramide there was some impairment in glucose tolerance in the normal subjects, but this was not significant in the diabetics. There was also a marked prolactin release in all subjects, but no significant effect on insulin or growth hormone. It is concluded that bromocriptine lowers the blood glucose and improves glucose tolerance in maturity onset diabetics. This action may be the result of the lowered prolactin which occurred without a concomitant rise in growth hormone.
在成年型糖尿病患者和正常受试者中,研究了多巴胺激动剂溴隐亭和多巴胺拮抗剂甲氧氯普胺对葡萄糖耐量的影响。服用溴隐亭后,糖尿病患者的空腹血糖降低,葡萄糖耐量改善。对照组的葡萄糖耐量最初有所改善。所有受试者的胰岛素水平均降低,血浆催乳素显著下降。糖尿病患者的生长激素浓度较低且未受影响,正常受试者的生长激素浓度则有不一致的升高。服用甲氧氯普胺后,正常受试者的葡萄糖耐量出现一定程度的损害,但在糖尿病患者中并不显著。所有受试者的催乳素也有明显释放,但对胰岛素或生长激素无显著影响。得出的结论是,溴隐亭可降低成年型糖尿病患者的血糖并改善葡萄糖耐量。这一作用可能是催乳素降低的结果,且生长激素并未随之升高。