Varenyuk I. Influences of monoamines, and testosterone on the hypothalamic arcuate nucleus electrical activity and testicular histophysiology in birds

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0401U002951

Thesis Registration Form

0401U002951.pdf

Applicant for

Specialization

  • 14.03.09 - Гістологія, цитологія, ембріологія

22-10-2001

Specialized Academic Board

Д 26.001.38

Taras Shevchenko National University of Kyiv

Essay

Effects of monoamines and testosterone both on the developing electrical activity of hypothalamic arcuate nucleus (AN) and morphology of testis and AN neurocytes during maturation in birds were tested. Catecholamines are determined to cause earlier puberty via a-, not b-adrenoreceptors; serotonin and dopamine cause some delay in maturation. Morning and evening melatonin treatment at low dose as well as evening melatonin treatment at high dose seem to activate hypothalamic-gonadal axis, while evening high-dose melatonin injections had no influence on gonads. The clear correlation was found between AN spectral power in d-, O-, a-frecuencies and size of AN neurocytes' nuclei.

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