[Effect of a single dose of some long-acting neuroleptics on the estrus cycle and the mammary gland of the rat]. / Effets d'une dose unique de quelques neuroleptiques à action prolongée sur le cycle estral et la glande mammaire de la ratte.

The effects of two neuroleptics (pipotiazine and fluphenazine) and five long-acting neuroleptics (pipotiazine undecylenate and palmitate, fluphenazine enanthate and decanoate, fluopentixol decanoate) are tested in the rat, during an observation period of 20 to 40 days following only one injection of compound. The compounds administered at three different and non toxic doses, are showing effects, the intensity and duration of which are different according to the dose and the compound: diestrus of pseudo-gestation or more than 15 days, hypertrophy of mammary gland, decreasing of the uterine weight. Some long-acting neuroleptics are active during more than forty days.

[Diabetes insipidus and exogenous antidiuretic hormone activity modifications by lithium in the rat]. / Diabète insipide et modifications de l'activité de l'hormone antidiurétique exogène sous l'influence du lithium chez le rat.

The authors made conspicuous in the rat the appearance of "diabetes insipidus" induced by two lithium salts: chloride and carbonate administered orally, with increasing doses in food. The polyuria, polydipsia and urinary hypotony are reversible and disappeared with stopping the treatment. The animals became insensible to the exogenous antidiuretic hormon during the treatment and progressively became sensible again during the following twenty days so suggesting a nephrogenic mechanism by lithium: either a loss of ADH activity, either the abolition of intrarenal osmotic pressure gradient.

[Kinetics of sodium thiosulfate-35S fixation and effect of some sulfur compounds on iodine-131 fixation in ray thyroid gland]. / Cinétique de fixation thyroïdienne du thiosulfate de sodium-35 S et effets de quelques molécules soufrées sur la fixation thyroïdienne de l'iode 131 chez le rat.

In order to invalidate or confirm the affirmation that non antithyroid sulphide molecules alter the measure of the thyroid fixation rate of iodine 131 we undertook on the rat: on one hand a kinetic study of thyroid fixation of sodium thiosulfate labelled with sulphur 35, which showed a very low captation not exceeding 0,01% of injected radioactivity; on the other hand the study of the effects of some sulphide molecules on thyroid fixation of iodine 131 in the rat: sodium thiosulfate, association of sodium thiosulfate + metalloidal sulphur + methionine, carbutamide and dimethylsulfoxyde in various kinds of dose administration and periods. None of the products used in our work conditions produced a significant decrease of the fixation rate of iodine 131. In three different experimental protocols (sulfur association and dimethylsulfoxide), we showed a significant light increase of the fixation rate.