Abstract
The ultrastructure of the chief neurosecretory nuclei, supraoptic, (SON), parventricular, (PVN) and infundibular (IN), of the dormouse (Eliomys quercinus L.) has been studied during active and hibernating states. In the active state all three nuclei contained light, dark and intermediate type neurons. In hibernation the SON showed only a single light type which differed from the light neurons of the active state; the endoplasmic reticulum was vacuolized and sometimes grouped in 'honey-comb' structures; the cytoplasm contained accumulations of filamentous 'crystalline' material. None of these features occurred in the active state neurons. In the PVN and IN during hibernation both a light and a dark type neuron were present. 'Honey-comb' structures were seen in neurons of the PVN during hibernation, but never in those of the IN. Thus specific morphological features in the SON and PVN appear to be associated with the physiological changes of hibernation.
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- Carrato Ibañez A., González Gonzalez G., Alvarez-Uria Rico M. New findings on special cistern aggregates in the spinal cord and cerebellum of the cat. Trab Inst Cajal Invest Biol. 1971;63:125–137. [PubMed] [Google Scholar]
- ERANKO O. The cytology of the nucleus supraopticus of the rat. Ann Med Exp Biol Fenn. 1951;29(2):158–173. [PubMed] [Google Scholar]
- Holmes R. L. The fine structure of supraoptic neurons of hedgehogs. Z Zellforsch Mikrosk Anat. 1965 Jun 9;66(5):685–689. doi: 10.1007/BF00339252. [DOI] [PubMed] [Google Scholar]
- ITO S., WINCHESTER R. J. The fine structure of the gastric mucosa in the bat. J Cell Biol. 1963 Mar;16:541–577. doi: 10.1083/jcb.16.3.541. [DOI] [PMC free article] [PubMed] [Google Scholar]
- MURAKAMI M. ELEKTRONENMIKROSKOPISCHE UNTERSUCUNGEN AM NUCLEUS PRAEOPTICUS DER KROETE (BUFO VULGARIS FORMOSUS) Z Zellforsch Mikrosk Anat. 1964 Jul 6;63:208–225. [PubMed] [Google Scholar]
- Monneron A., Bernhard W. Fine structural organization of the interphase nucleus in some mammalian cells. J Ultrastruct Res. 1969 May;27(3):266–288. doi: 10.1016/s0022-5320(69)80017-1. [DOI] [PubMed] [Google Scholar]
- PALAY S. L. The fine structure of secretory neurons in the preoptic nucleus of the goldish (Carassius auratus). Anat Rec. 1960 Dec;138:417–443. doi: 10.1002/ar.1091380404. [DOI] [PubMed] [Google Scholar]
- ROSENBLUTH J. Subsurface cisterns and their relationship to the neuronal plasma membrane. J Cell Biol. 1962 Jun;13:405–421. doi: 10.1083/jcb.13.3.405. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Zambrano D., De Robertis E. The secretory cycle of supraoptic neurons in the rat: a structural-functional correlation. Z Zellforsch Mikrosk Anat. 1966;73(3):414–431. doi: 10.1007/BF00329020. [DOI] [PubMed] [Google Scholar]