Ultrastructural and Monoamine Histofluorescence Study of the Pineal Gland in the Female Garden-dormouse (Eliomys quercinus L.) under Normal and Experimental Conditions during the Period of Hibernation. Correlations with the Hypothalamo-Pituitary-Ovarian Axis

Roux, M.; Cordonnier, J.; Richoux, J. P.

doi:10.1016/s0079-6123(08)62922-2

Cited by 4 publications

(9 citation statements)

References 6 publications

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“…At the end of January, the pinealocytes of normal hibernating (group 1) and non-hibernating animals (group 2) show the characteristic aspect previously described (Richoux et aI., 1975;Roux et al, 1979). The cells contain many liposomes, voluminous mitochondria with tubular crests, numerous lysosomes and myeloid bodies.…”

Section: Resultsmentioning

confidence: 60%

“…It was earlier demonstrated Roux et al, 1979) that the liposomes in the pinealocytes of continuously illuminated specimens (group 3), observed during the hibernation period, show a striking reduction in size or even totally disappear. Lysosomes and myeloid bodies are also less frequent.…”

Section: Resultsmentioning

confidence: 87%

“…In previous studies (Cordonnier et al, 1978;Roux et al, 1979), we were struck by the association of the richness in lipids and indoleamines in the pinealocytes of hibernating animals, whereas continuously illuminated animals were deprived of both. Several authors (Quay, 1961;Perrelet et aI., 1968) noted this relationship and the very presence of indoleamines in the liposomes has been suggested (Perrelet et al, 1968;Arstila et aI., 1971).…”

Section: Discussionmentioning

confidence: 98%

“…We demonstrated the typical ultrastructural aspects of this pineal endocrine cell, varying with the photoperiodicity and sexual activity (Roux et al, 1977(Roux et al, , 1979(Roux et al, , 1981.…”

Section: Introductionmentioning

confidence: 87%

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Effect of castration and adrenalectomy on the ultrastructure of pinealocytes in the female garden dormouse (Eliomys quercinus L.) under different conditions of lighting and temperature during the normal period of hibernation

Roux¹,

Richoux²

1981

J. Neural Transmission

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The ultrastructure of the female garden dormouse pinealocyte has been studied during the period of hibernation in normal, castrated, castrated and adrenalectomized hibernant animals and non-hibernant ones living under a L-D = 10-14 photoperiodicity or continuous lighting. Continuous illumination on the one hand, and gonad and adrenalectomy on the other, have similar effects on the ultrastructure of pinealocytes. Especially a striking reduction of liposomes, an increased development of the Golgi apparatus and of cisterns formed by the rough endoplasmic reticulum were observed. The observations suggest that the liposomes are involved in a perhaps indoleaminergic antigonadotropic secretory process whereas the peculiar dilated cisterns of the rough endoplasmic reticulum may be related with a pineal polypeptidergic gonadotropic secretory process.

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Section: Resultsmentioning

confidence: 60%

Section: Resultsmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 87%

See 2 more Smart Citations

Effect of castration and adrenalectomy on the ultrastructure of pinealocytes in the female garden dormouse (Eliomys quercinus L.) under different conditions of lighting and temperature during the normal period of hibernation

Roux¹,

Richoux²

1981

J. Neural Transmission

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“…All the animals stayed in permanent anoestrus even at long-term. The Kappers, 1969Kappers, , 1976Reiter, 1978 (Roux et Richoux et al, 1975 ;Roux et al, 1977Roux et al, , 1979 (Zweens, 1963), du taux d'hormone gonadotrope circulante (Zweens, 1965 ;Karasek et Marek, 1978) nous font penser, avec Pevet (1979) (Roux et al, 1977). Rappelons que tous ces animaux sont en état d'anaestrus.…”

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Effets de l'énucléation oculaire bilatérale sur l'ultrastructure de l'épiphyse chez la femelle du Lérot (Eliomys quercinus L.). Corrélations avec l'axe hypothalamo-hypophyso-ovarien

Roux¹,

Richoux²,

CUNIN³

1981

Reprod. Nutr. Dévelop.

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The ultrastructure of mammalian pinealocytes: A systematic investigation

Bhatnagar

1992

Microscopy Res & Technique

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Pinealocytes are not only the principal cellular components of the pineal gland, but they are also the principal synthetic machinery of this enigmatical gland with highly diverse and often questionable empyreal roles assigned to it. Ultrastructural descriptions of pinealocytes belonging to some 70 species of mammals (a mere 2% or less of the over 4,200 mammalian species) have been summarized from the available literature with new observations on 12 species of chiropterans. Space limitation precluded any treatment of the supporting glia, neural elements, and the perivascular spaces. A detailed table lists nearly all mammalian species whose pineal ultrastructure has been investigated. Blanks in this table point to the necessity of studies on those particular groups. A tabular listing of unusual structures reported within the pinealocyte cytoplasm points out the impending experimental work on these species. Such studies using the latest techniques might provide clearer insights into the functional role of the pineal gland as an important and integral component of the neuroendocrine axis. Whereas sufficient structural information now exists on cytoplasmic organelles such as synaptic ribbons and spherules, annulate lamellae, subsurface cisterns, and the several types of synaptic arrangements seen in relation to the pinealocyte soma and its processes, the functional role of these structures in pineal synthetic processes remains to be elucidated.

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Ultrastructural and Monoamine Histofluorescence Study of the Pineal Gland in the Female Garden-dormouse (Eliomys quercinus L.) under Normal and Experimental Conditions during the Period of Hibernation. Correlations with the Hypothalamo-Pituitary-Ovarian Axis

Cited by 4 publications

References 6 publications

Effect of castration and adrenalectomy on the ultrastructure of pinealocytes in the female garden dormouse (Eliomys quercinus L.) under different conditions of lighting and temperature during the normal period of hibernation

Effect of castration and adrenalectomy on the ultrastructure of pinealocytes in the female garden dormouse (Eliomys quercinus L.) under different conditions of lighting and temperature during the normal period of hibernation

Effets de l'énucléation oculaire bilatérale sur l'ultrastructure de l'épiphyse chez la femelle du Lérot (Eliomys quercinus L.). Corrélations avec l'axe hypothalamo-hypophyso-ovarien

The ultrastructure of mammalian pinealocytes: A systematic investigation

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