The effect of acute and chronic morphine treatment on nitric oxide (NO) synthase activity (determined by the rate of conversion of [C-14]arginine into [C-14]citrulline) on mouse brain was studied. Acute morphine treatment induced an increase in Ca2+-dependent NO synthase in cerebellum. This effect was blocked by coadministration with naloxone. Chronic morphine treatment (by s.c. pellet) also produced an increase in cerebellar NO synthase, with a maximum on the second day of implantation. No significant changes were found in frontal cortex and forebrain during acute or chronic morphine treatment. The relationship between opiate effects and the L-arginine:NO pathway is discussed.
机构:
Univ Tehran Med Sci, Expt Med Res Ctr, Tehran, Iran
Univ Tehran Med Sci, Sch Med, Dept Pharmacol, POB 13145-784, Tehran, IranRafsanjan Univ Med Sci, Res Inst Basic Med Sci, Physiol Pharmacol Res Ctr, Rafsanjan, Iran
Momeny, Majid
Heidari, Mansour
论文数: 0引用数: 0
h-index: 0
机构:
Univ Tehran Med Sci, Dept Med Genet, Tehran, IranRafsanjan Univ Med Sci, Res Inst Basic Med Sci, Physiol Pharmacol Res Ctr, Rafsanjan, Iran
Heidari, Mansour
Dehpour, Ahmad Reza
论文数: 0引用数: 0
h-index: 0
机构:
Univ Tehran Med Sci, Expt Med Res Ctr, Tehran, Iran
Univ Tehran Med Sci, Sch Med, Dept Pharmacol, POB 13145-784, Tehran, IranRafsanjan Univ Med Sci, Res Inst Basic Med Sci, Physiol Pharmacol Res Ctr, Rafsanjan, Iran