Morphofunctional changes in the pineal gland during dynamic adaptation to hypothermia.

Autor: Bondarenko LA; Chronoendocrinology Laboratory, V. Ya. Danilevskii Institute of Problems of Endocrine Pathology, Ukrainian Academy of Medical Sciences, 10 Artem Street, 61002 Khar'kov-2, Ukraine., Gubina-Vakulik GI
Jazyk: angličtina
Zdroj: Neuroscience and behavioral physiology [Neurosci Behav Physiol] 2003 May; Vol. 33 (4), pp. 405-9.
DOI: 10.1023/a:1022859910477
Abstrakt: The effects of stress induced by hypothermia (+4 degrees C for 3 h) on the pathways of serotonin metabolism in the pineal gland and on its structure were studied in adult male Wistar rats. These experiments showed that the melatonin-forming function of the epiphysis undergoes phasic changes during adaptation: there was a significant increase during the first 15 min, which was followed by gradual inhibition (to initial by 30 min) and then sharp suppression (at 3 h). Suppression of the functional activity of the pineal gland occurred because of exclusion of a proportion of pinealocytes from the process of active functioning.
Databáze: MEDLINE