[Histofluorometric study of catecholamines of the external layer of median eminence in the rabbit (author's transl)].
In order to study the role of the Biogenic Amines of the Median Eminence (M. E.) in the ovulatory neuroendocrinological reflex in the female rabbit, we analysed by semi-quantitative histofluorometry (Zeiss) the post-coïtum variations in formaldehyde induced fluorescence (Falck and Hillarp's technique) in the dopaminergic layer of the M. E. 116 female rabbits (62 control, 54 post-coïtum) were examined. In all the animals the dopaminergic layer of the M.E. displayed variations in fluorescence, both in thickness and intensity, along the antero-posterior axis and lateraly. In this respect, these results partly recovered those reported in the Rat (Lofstrom, 1976). Moreover, in half of the post-coïtum animals, from the 5 th min. up to the 30 th min, the intensity of the fluorescence was increased in the whole external layer. These results provide some evidence for a correlation between the variations in the Dopamine content of the M.E. and the involvement of the nervous mechanisms implied in the ovulatory neuroendocrinological reflex.
D000818:Animals; D003307:Copulation / Q000502:physiology; D004298:Dopamine / Q000032:analysis*; D005260:Female; D005470:Fluorometry / Q000379:methods; D007030:Hypothalamo-Hypophyseal System / Q000032:analysis*; D008473:Median Eminence / Q000032:analysis* / Q000502:physiology; D010053:Ovary / Q000502:physiology*; D010060:Ovulation; D011247:Pregnancy; D011817:Rabbits
D004298:Dopamine
Histofluorométrie des catécholamines de la couche externe de l'éminence médiane hypothalamique de la lapine. Variations anatomiques et au cours de l'activation de l'axe hypothalamo-gonadique.