ParkinsonCanadaV1, Main, Exploration, bibRecord, 003560

Sex differences in catalepsy : evidence for hormone-dependent postural mechanisms in haloperidol-treated rats

Identifieur interne : 003560 ( Main/Exploration ); précédent : 003559; suivant : 003561

Sex differences in catalepsy : evidence for hormone-dependent postural mechanisms in haloperidol-treated rats

Auteurs : E. F. Field [Canada] ; I. Q. Whishaw [Canada] ; S. M. Pellis [Canada]

Source :

Behavioural brain research [ 0166-4328 ] ; 2000.

RBID : Pascal:00-0266275

Descripteurs français

Pascal (Inist)
- Catalepsie, Modèle animal, Parkinson maladie, Récepteur dopaminergique, Antagoniste, Hormone stéroïde sexuelle, Castration, Ovariectomie, Animal, Rat, Sexe, Posture.

English descriptors

KwdEn :
- Animal, Animal model, Animals, Antagonist, Biomechanical Phenomena, Castration, Catalepsy, Catalepsy (chemically induced), Catalepsy (physiopathology), Disease Models, Animal, Dopamine Antagonists (adverse effects), Dopamine receptor, Female, Gonadal Steroid Hormones (physiology), Haloperidol (adverse effects), Head-Down Tilt (physiology), Male, Ovariectomy, Parkinson Disease (physiopathology), Parkinson disease, Posture, Posture (physiology), Rat, Rats, Rats, Inbred Strains, Sex, Sex Characteristics, Sex steroid hormone.
MESH :
- chemical , adverse effects : Dopamine Antagonists, Haloperidol.
- chemically induced : Catalepsy.
- chemical , physiology : Gonadal Steroid Hormones, Head-Down Tilt, Posture.
- physiopathology : Catalepsy, Parkinson Disease.
- Animals, Biomechanical Phenomena, Disease Models, Animal, Female, Male, Rats, Rats, Inbred Strains, Sex Characteristics.

Abstract

Catalepsy, a symptom of Parkinson's disease and related disorders can be produced in rats and other laboratory animals by the blockade of nigrostriatal dopamine using dopaminergic antagonists such as haloperidol. When haloperidol-induced cataleptic rats are placed facing downward on an inclined plane, they will brace against the resulting downward force by pushing backwards, and if they lose postural stability, or their position on the inclined plane, they will jump forward. Females, however, jump from the inclined plane at a significantly lower angle than do males. Frame-by-frame analysis of the jumping sequences revealed that females and males use a different combination of postural adjustments to maintain their position on the inclined plane prior to jumping. Furthermore, gonadal hormone manipulations at birth and in adulthood reveal that these sex differences in postural adjustments are dependent on the organizational effects of gonadal hormones in the perinatal period. These results provide evidence for sex differences in postural support mechanisms and suggest that the sex of subjects, or their hormonal state, must be considered when studying the behavioral aspects of neurological disorders such as Parkinson's disease which include a postural component.

Affiliations:

Canada

Le document en format XML

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<front><div type="abstract" xml:lang="en">Catalepsy, a symptom of Parkinson's disease and related disorders can be produced in rats and other laboratory animals by the blockade of nigrostriatal dopamine using dopaminergic antagonists such as haloperidol. When haloperidol-induced cataleptic rats are placed facing downward on an inclined plane, they will brace against the resulting downward force by pushing backwards, and if they lose postural stability, or their position on the inclined plane, they will jump forward. Females, however, jump from the inclined plane at a significantly lower angle than do males. Frame-by-frame analysis of the jumping sequences revealed that females and males use a different combination of postural adjustments to maintain their position on the inclined plane prior to jumping. Furthermore, gonadal hormone manipulations at birth and in adulthood reveal that these sex differences in postural adjustments are dependent on the organizational effects of gonadal hormones in the perinatal period. These results provide evidence for sex differences in postural support mechanisms and suggest that the sex of subjects, or their hormonal state, must be considered when studying the behavioral aspects of neurological disorders such as Parkinson's disease which include a postural component.</div>
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La maladie de Parkinson au Canada (serveur d'exploration)

Sex differences in catalepsy : evidence for hormone-dependent postural mechanisms in haloperidol-treated rats

Sex differences in catalepsy : evidence for hormone-dependent postural mechanisms in haloperidol-treated rats

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

	La maladie de Parkinson au Canada (serveur d'exploration)
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