Journal Browser Advanced Search Help
Journal Browser Advanced search HELP
J Korean Neurol Assoc. 1992 Dec;10(4):515-530. Korean. Original Article.
Park YK , Seo JT , Bahng HR , Kim KH .
Department of Neurology, College of Medicine, Hallym University.
Department of Pharmacology, College of Medicine, Yonsei University.

It has been reported that ischernia causes changes in the concentration and tumover of monoamine neurotransmitters in brain. For the mechanism of cellular death in brain ischernia it is suggested that accumulation of intracellular calcium during ischemia is one of the main causes. Present study was undertaken to investigate the influence of ischemia on the contents and tumover of the biogenic anines in rat brain and further to investigate the effects of nimodipine, a calcium channel blocker, and cromakalim, a potassium channel opener, on them. Brain ischemia was induced by partial ligation of bilateral common carotid artery. Nimodipine (36 ,ug/kg, I.p.) or cromakalim (0.5mg/kg, I.p.) was administered 20 minutes before ligation. Nimodipine was administered every 4 hours in 24-hour ischemic group. Rats were sacrificed by decapitation 3 or 24 hours after induction of ischemia and whole brains were excised. The brain was divided into follow ing regions; cerebral cortex, corpus striatum, hippocampus, thalamus, hypothalamus, substantia nigra and cerebellum. The concentrations of biogenic amines and their metabolites were measured by high performance liquid chromatography-electrochemical detector (HPLC-ECD).

Copyright © 2019. Korean Association of Medical Journal Editors.