8-(N,N-diethylamino)-n-octyl-3,4,5-trimethoxybenzoate inhibited the reduction of cerebral blood flow evoked by 5-HT and KCl in rats.
- Author:
Bin WANG
1
;
Ai-xia ZHANG
;
Ying ZOU
;
Juan WANG
;
Ji-gao XIAO
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Brain; blood supply; drug effects; Calcium Channel Blockers; pharmacology; Drug Interactions; Gallic Acid; analogs & derivatives; pharmacology; Potassium Chloride; antagonists & inhibitors; Rats; Rats, Sprague-Dawley; Regional Blood Flow; drug effects; Serotonin Antagonists; pharmacology
- From: Acta Pharmaceutica Sinica 2003;38(5):342-345
- CountryChina
- Language:Chinese
-
Abstract:
AIMTo investigate the impact of 8-(N,N-diethylamino)-n-octyl-3,4,5-trimethoxybenzoate (TMB-8) on the change of cerebral blood flow(CBF) induced by 5-HT or KCl in rats.
METHODSThe CBF in rats was measured by a Laser-Doppler flowmeter. The cranial window field was superfused with artificial cerebral spinal fluid containing TMB-8, 5-HT or KCl.
RESULTS12.5, 25 and 50 mumol.L-1 TMB-8 showed no significant effect on rest CBF in rats. 12.5, 25 and 50 mumol.L-1 TMB-8 apparently inhibited the decline of CBF evoked by 1 or 2 mumol.L-1 5-HT. When persistent reduction of CBF were evoked by 1 mumol.L-1 5-HT, TMB-8 markedly increased the CBF in a concentration-dependent manner. The reduction of CBF induced by 20 or 40 mmol.L-1 KCl was also suppressed by 12.5, 25 and 50 mumol.L-1 TMB-8. While persistent reduction of CBF was evoked by 20 mmol.L-1 KCl. TMB-8 markedly increased the CBF in a concentration-dependent manner.
CONCLUSIONThese results indicate that TMB-8 is effective in preventing and treating the reduction of CBF induced by 5-HT or KCl, and improved the supply of blood in rat brain during ischemia.
