Beatriz Moisset

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Small doses of the opiate antagonist naloxone selectively abolished overeating in genetically obese mice (ob/ob) and rats (fa/fa). Elevated concentrations of the naturally occurring opiate beta-endorphin were found in the pituitaries of both obese species and in the blood plasma of the obese rats. Brain levels of beta-endorphin and Leu-enkephalin were(More)
The ambulatory and rearing responses to d-amphetamine were studied in a battery of recombinant inbred strains and in three closely related strains: C57BL/6J, C57BL/10J, and C57BL/6By. Differences in the increase of ambulation (stimulation) caused by d-amphetamine were seen between C57BL/6By and the other two C57BL strains. Analysis of F1 and backcross(More)
The mode of inheritance of the synaptosomal mechanism for uptake of norepinephrine (NE) was studied in two inbred strains of mice, BALB/cBY and C57BL/6BY, along with the reciprocal F1 hybrids and 7 recombinant inbred strains, CXBD, CXBE, CXBG,CXBH,CXBI,CXBJ and CXBK. All these strains were also tested in the open field as a measure of response to mild(More)
Melanocyte-stimulating hormone (MSH) activity was measured in the pituitaries of genetically obese and lean control mice using the frog skin bioassay. Obese mice pituitaries demonstrated very significantly elevated levels of biologically active MSH when compared to their lean littermates. These results support the hypothesis that the elevated levels of(More)
Chez des souris C57BL/10J, on constate une augmentation de l'activité locomotrice durant tous les 7 jours qui suivent leur injection avec la d-amphétamine. Chez des souris BALB/cJ, cette augmentation n'apparaît pas, sauf légèrement après le quatrième jour. Des facteurs génétiques jouent un rôle important dans la détermination de la réponse comportementale à(More)
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