Effects of Bifemelane Hydrochloride on Various Cholinergic Markers in Cortical and Subcortical Regions of Aged Rats

The effects of bifemelane hydrochloride (BF) upon various cholinergic markers, muscarinic receptors, acetylcholinesterase (AChE) and choline acetyl-transferase (CAT), in the aged rat brain were examined. Marked reduction of the density of muscarinic receptors (Bmax) as well as AChE and CAT activity...

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Veröffentlicht in:Japanese Journal of Pharmacology 1989-01, Vol.51 (2), p.211-218
Hauptverfasser: EGASHIRA, Tom, NAGAI, Takayuki, KIMBA, Yoshihira, TAKANO, Ritsuko, YAMANAKA, Yasumitsu
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container_end_page 218
container_issue 2
container_start_page 211
container_title Japanese Journal of Pharmacology
container_volume 51
creator EGASHIRA, Tom
NAGAI, Takayuki
KIMBA, Yoshihira
TAKANO, Ritsuko
YAMANAKA, Yasumitsu
description The effects of bifemelane hydrochloride (BF) upon various cholinergic markers, muscarinic receptors, acetylcholinesterase (AChE) and choline acetyl-transferase (CAT), in the aged rat brain were examined. Marked reduction of the density of muscarinic receptors (Bmax) as well as AChE and CAT activity concomitant with aging was observed. Administration of BF in daily doses of 10 mg/kg for 4 weeks to aged rats significantly decreased the apparent dissociation constant (K4) for QNB in muscarinic receptors in the forebrain, but did not affect the value of Bmax. CAT activity also increased significantly compared with that of control aged rats, but administration of BF did not alter AChE activity. These results indicate that long-term treatment with BF enhances the affinity of muscarinic receptors for QNB as well as CAT activity and that BF may have therapeutic application in the treatment of CNS cholinergic dysfunctions.
doi_str_mv 10.1016/S0021-5198(19)40118-2
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Drug treatments</topic><topic>Psychoanaleptics: cns stimulant, antidepressant agent, nootropic agent, mood stabilizer..., (alzheimer disease)</topic><topic>Psychology. Psychoanalysis. 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ispartof Japanese Journal of Pharmacology, 1989-01, Vol.51 (2), p.211-218
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source MEDLINE; J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; EZB-FREE-00999 freely available EZB journals; Free Full-Text Journals in Chemistry
subjects Acetylcholinesterase - metabolism
Aging - physiology
Animals
Antidepressive Agents - pharmacology
Benzhydryl Compounds - pharmacology
Biological and medical sciences
Brain - drug effects
Brain - enzymology
Cerebral Cortex - drug effects
Cerebral Cortex - enzymology
Choline O-Acetyltransferase - antagonists & inhibitors
Cholinesterase Inhibitors - pharmacology
Kinetics
Male
Medical sciences
Nerve Tissue Proteins - metabolism
Neuropharmacology
Parasympathetic Nervous System - drug effects
Pharmacology. Drug treatments
Psychoanaleptics: cns stimulant, antidepressant agent, nootropic agent, mood stabilizer..., (alzheimer disease)
Psychology. Psychoanalysis. Psychiatry
Psychopharmacology
Rats
Rats, Inbred Strains
Receptors, Muscarinic - drug effects
title Effects of Bifemelane Hydrochloride on Various Cholinergic Markers in Cortical and Subcortical Regions of Aged Rats
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