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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2001; 47(4): 49-57


Influence of monoamines and testosterone on thehypothalamo-testicular axis of japanese quail (electrophysiological and morphometric study)

M.E. Dzerzhinsky, A.N. Ptitsa, I.M. Varenyuk

    Taras Shevchenko National University, Kiеv


Abstract

Effects of biogenic amines, testosterone and melatonin both on the developing electrical activity of hypo- thalamic arcuate nucleus (NA) and morphology of testis and NA neurocytes during maturation in birds (Coturnix coturnix japonica) were tested. Slow д- frequency was shown to prevail at quail NA electrical activity. NA spectral power gradually enlarges during maturation. The data confirm the evidence that cate- cholamines induce acceleration of sexual maturation in birds mainly via brain alpha-adrenoreceptors, while dopamine- and serotoninergic brain systems cause deceleration of maturation. Morning or evening treat- 4 № ,74 .Т ,1002 ,.нруж .лоізіФ 9848-1020 NSSI57 ments with melatonin (5mkg/100g bw) and evening ones (50mkg/100g bw) were revealed to result in activation of hypothalamic-testicular axis, and high- dose morning melatonin injections don’t have any influence. Significant correlation was registered bet- ween the spectral power of NA neurocytes and profile area of their cellular nuclei. Total EA was demon- strated to vary at д1- and, lesser, д2-, и-, and б-ranges of spectrum, and was insignificant at в-range.

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