Functional status of hypothalamic suprachiasmatic nucleus and thiroid gland at organisms of a different genders in conditions of the changed photomodes

Functional status of hypothalamic suprachiasmatic nucleus (SCN) in dorsomedial and ventrolateral subregions and thyroid gland at white rats in conditions light and dark deprivations are investigated. Change of a photomode, especially dark deprivation, led to change of a ratio of a functional condition of different SCN subregions in comparison with natural illumination. The strengthened synthetic processes in a thyroid gland were observed without dependence from gender of animal. A degree of reaction investigated neuroendocrine components at females are expressed more strongly in comparison with males.