Results 141 to 150 of about 17,879 (182)
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Functional Morphology of the Suprachiasmatic Nucleus
Frontiers in Neuroendocrinology, 1999In mammals, the biological clock (circadian oscillator) is situated in the suprachiasmatic nucleus (SCN), a small bilaterally paired structure just above the optic chiasm. Circadian rhythms of sleep-wakefulness and hormone release disappear when the SCN is destroyed, and transplantation of fetal or neonatal SCN into an arrhythmic host restores ...
Y, Ibata +11 more
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Brain Research Bulletin, 1993
Recovery of circadian drinking rhythms in suprachiasmatic nucleus (SCN)-lesioned rats after fetal SCN grafting was related to the immunocytochemical appearance and fiber outgrowth of vasopressin (VP)-, vasoactive intestinal polypeptide (VIP)-, and somatostatin (SOM)-containing neurons in the implants. At 4 weeks postgrafting, the first recovered animal
H A, Griffioen +4 more
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Recovery of circadian drinking rhythms in suprachiasmatic nucleus (SCN)-lesioned rats after fetal SCN grafting was related to the immunocytochemical appearance and fiber outgrowth of vasopressin (VP)-, vasoactive intestinal polypeptide (VIP)-, and somatostatin (SOM)-containing neurons in the implants. At 4 weeks postgrafting, the first recovered animal
H A, Griffioen +4 more
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Transplantation of the Suprachiasmatic Nucleus in the Rat
1987Restoration of the circadian rhythmicity in wheel-running activity was shown in rats with bilateral suprachiasmatic nuclei (SCN) lesions, after transplantation of the neonatal SCN into the wall of the third ventricle. Free-running circadian rhythms of the wheel-running activity were recorded in young adult rats at least for a month under constant dark ...
Y, Saitoh, I, Nihonmatsu, H, Kawamura
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Resetting the suprachiasmatic nucleus clock
Frontiers in Bioscience, 2004Recent research on the cellular basis of circadian rhythmicity has stressed the importance of clock genes for the maintenance of normal rhythmicity. There have been tremendous advances in our understanding of the inter-relationships of the various genes known to generate the rhythms.
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Synaptology of the rat suprachiasmatic nucleus
Cell and Tissue Research, 1976Within the suprachiasmatic nucleus (SCN) of the rat the fine structure of the synapses and some features of their topological arrangement were studied. Five types of synapses could be distinguished with certainty: A. Two types of Gray-type-I (GTI) or asymmetrical synapses (approximately 33%).
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Serotonin innervation of the primate suprachiasmatic nucleus
Brain Research, 2004The suprachiasmatic nucleus (SCN) in rodents receives a dense innervation from serotonin neurons of the midbrain raphe. This projection overlaps the terminal field of the retinohypothalamic tract in the SCN core, the central part of the nucleus characterized by a population of vasoactive intestinal polypeptide (VIP)-containing neurons.
Robert Y, Moore, Joan C, Speh
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Immunocytochemistry on Suprachiasmatic Nucleus Slices
2007Immunocytochemistry (ICC) is a sensitive and powerful method that is used to localize and identify cells containing a particular antigen. This chapter is dedicated to ICC of suprachiasmatic nucleus (SCN) slices. After a brief introduction to the technique, the materials and methods sections describe two different methods to obtain SCN slices--the first
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Paradoxical effects of NPY in the suprachiasmatic nucleus
European Journal of Neuroscience, 2006AbstractThe circadian clock in the suprachiasmatic nucleus (SCN) is synchronized by the 24 h, light : dark cycle, and is reset by photic and non‐photic cues. The acute effects of light in the SCN include the increase of mRNA levels of the circadian clock gene Per1 and a dramatic reduction of pineal melatonin.
Karen L, Gamble +4 more
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