[Observations on ovulation induced in female rabbits by electric hypothalamic stimulations].
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Biomedical subjects
Publications and source records attributed to C Bensch.
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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.