Roth B L, Disimone J, Majane E A, Yang H Y
Surgical Research Division, Naval Medical Research Institute, Bethesda, MD 20814.
Neuropeptides. 1987 Jul;10(1):37-42. doi: 10.1016/0143-4179(87)90087-4.
We found that two recently characterized neuropeptides Phe-Leu-Phe-Gln-Pro-Gln-Arg-Phe-NH2 (F-8-F-NH2) and Ala-Gly-Glu-Gly-Leu-Ser-Ser-Pro-Phe-Trp-Ser-Leu-Ala-Ala-Pro-Gln-Arg-Phe-NH2 (A-18-F-NH2) elevate mean arterial blood pressure (MAP) in conscious, unrestrained rats. The pressor activities of both agents were attenuated, but not abolished, by prior treatment with guanethidine or prazosin. These results suggest that F-8-F-NH2 and A-18-F-NH2 elevate MAP in rats by potentiating the release of catecholamines and by mechanisms independent of catecholamine release.
我们发现,最近鉴定出的两种神经肽,即苯丙氨酸 - 亮氨酸 - 苯丙氨酸 - 谷氨酰胺 - 脯氨酸 - 谷氨酰胺 - 精氨酸 - 苯丙氨酸 - 氨基(F-8-F-NH2)和丙氨酸 - 甘氨酸 - 谷氨酸 - 甘氨酸 - 亮氨酸 - 丝氨酸 - 丝氨酸 - 脯氨酸 - 苯丙氨酸 - 色氨酸 - 丝氨酸 - 亮氨酸 - 丙氨酸 - 丙氨酸 - 脯氨酸 - 谷氨酰胺 - 精氨酸 - 苯丙氨酸 - 氨基(A-18-F-NH2),可使清醒、不受束缚的大鼠平均动脉血压(MAP)升高。预先用胍乙啶或哌唑嗪处理后,这两种药物的升压活性均减弱,但未被消除。这些结果表明,F-8-F-NH2和A-18-F-NH2通过增强儿茶酚胺的释放以及通过与儿茶酚胺释放无关的机制来升高大鼠的MAP。