Ischemia-induced Changes of Biogenic Amines in Rat Brain and the Effect of Nimodipine of Them
Journal of the Korean Neurological Association
;
: 515-530, 1992.
Article
in Korean
| WPRIM
| ID: wpr-225927
ABSTRACT
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).
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Thalamus
/
Biogenic Amines
/
Brain
/
Substantia Nigra
/
Nimodipine
/
Calcium Channels
/
Potassium Channels
/
Cerebellum
/
Cerebral Cortex
/
Brain Ischemia
Limits:
Animals
Language:
Korean
Journal:
Journal of the Korean Neurological Association
Year:
1992
Type:
Article
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