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  • 1
    ISSN: 1435-1463
    Keywords: Pinealocytes ; mole ; sexual cycle ; ultrastructure ; paracrystalline structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Resume L'évolution quantitative de quelques paramètres ultrastructuraux (structures paracristallines, appareils de Golgi, grains de sécrétion) des pinéalocytes de la taupe, a été suivie pendant les différentes phases du cycle sexuel. Cette étude a permis de montrer une augmentation du nombre des structures paracristallines et des appareils de Golgi pendant la phase de pleine activité sexuelle chez les mâles et pendant l'œstrus, la gestation et la lactation chez les femelles. De plus, l'apparition d'un phénomène de vacuolisation des pinéalocytes a été observée pendant le proestrus. Ces résultats semblent démontrer d'étroites relations entre l'activité endocrine de l'axe adénohypophyse-gonades et l'accroissement des synthèses des pinéalocytes. Aucune évolution du nombre de grains de sécrétion n'a été observée pendant les différentes phases du cycle sexuel.
    Notes: Summary Changes of some ultrastructural parameters (paracrystalline structures, Golgi apparatus, secretory granules) in mole pinealocytes were quantitatively studied during the various phases of the sexual cycle. An increase in quantity of paracrystalline structures and of the Golgi apparatuses was demonstrated during the period of high sexual activity in male pinealocytes and during oestrus, gestation and lactation in female pinealocytes. Moreover, the appearance of vacuoles in female pinealocytes was observed during pro-oestrus. These results seem to demonstrate close relationship between the endocrine activity of the hypophyseo-gonadal axis and the synthesis of some compounds by the pinealocytes. No increase in the quantity of secretory granules was observed during the various phases of the sexual cycle studied.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 165 (1976), S. 297-306 
    ISSN: 1432-0878
    Keywords: Pineal gland ; Mole ; Yellow-orange autofluorescent material ; Subcommissural organ
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé Une étude de la glande pinéale de la Taupe, animal vivant toujours dans une obscurité complète, a été entreprise selon la technique de fluorescence décrite par Falck et al. (1962). Une importante innervation catécholaminergique a été démontrée tandis que la fluorescence jaune — caractéristique des indoleamines-n'a pas été observée. Après omission du traitement par la formaldehyde, de très nombreuses cellules contenant du material autofluorescent (jaune-orange) furent observées. La nature et la fonction de ce material autofluorescent est discutée.
    Notes: Summary The pineal gland of the mole, a mammal which lives in permanent darkness, has been studied using fluorescence histochemistry. An extensive catecholaminergic innervation is demonstrated. A yellow formaldehyde-induced fluorescence, characteristic of indoleamines, was not observed. If formaldehyde vapour treatment was omitted in the procedure, numerous cells containing yellow-orange autofluorescent material could be shown. The nature and possible function of this material is discussed.
    Type of Medium: Electronic Resource
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