A failure to support cross-sensitization between effects of apomorphine and lesions of the habenula nucleus

An interchangeability between the effects of stress and psychostimulants has been reported. The possible common physiological effects of lesions of the habenula, stress and psychostimulant administration of activation of ascending dopamine systems suggested examination of a cross-sensitization betwe...

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Veröffentlicht in:Pharmacology, biochemistry and behavior biochemistry and behavior, 1989, Vol.32 (1), p.77-81
Hauptverfasser: THORNTON, E. W, BRADBURY, G. E, EVANS, J. A. C, WICKENS, A
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container_end_page 81
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container_title Pharmacology, biochemistry and behavior
container_volume 32
creator THORNTON, E. W
BRADBURY, G. E
EVANS, J. A. C
WICKENS, A
description An interchangeability between the effects of stress and psychostimulants has been reported. The possible common physiological effects of lesions of the habenula, stress and psychostimulant administration of activation of ascending dopamine systems suggested examination of a cross-sensitization between lesions of the habenula and psychostimulant administration. Lesions of the habenula were found to increase baseline activity but there were no significant changes in response to apomorphine in either various categories of stereotypy or locomotor response. Lesioned rats and controls both demonstrated similar dose and time-related effects in various response measures. Although not significant, certain results suggested that changes tended to be in the direction opposite to that of the suggested sensitization. The results are contrasted with previous supporting data and discussed in terms of the potentially diverse manner in which habenular manipulation and psychostimulants may influence dopaminergic activity and subsequent behaviour.
doi_str_mv 10.1016/0091-3057(89)90213-X
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source MEDLINE; Access via ScienceDirect (Elsevier)
subjects Animals
Apomorphine - pharmacology
Biological and medical sciences
Brain - drug effects
Brain - physiopathology
Catecholaminergic system
Male
Medical sciences
Motor Activity - drug effects
Neuropharmacology
Neurotransmitters. Neurotransmission. Receptors
Pharmacology. Drug treatments
Rats
Stereotyped Behavior - drug effects
Stress, Physiological - physiopathology
title A failure to support cross-sensitization between effects of apomorphine and lesions of the habenula nucleus
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