Effects of melatonin infused into the III ventricle on prolactin, beta-endorphin and luteotropin secretion in ewes during the different stages of the reproductive cycle

• Authors: T. Misztal , K. Romanowicz , B. Barcikowski
• Languages of publication: EN

Abstracts

EN

Secretion of all the pituitary hormones undergoes marked circadian and seasonal changes.The rhythmicity of these changes is controled by the circadian pacemaker system and the pineal gland transmitting daylength informatoin to the neuroendocrine axis via the secretion of melatonin.This article presents data on the effects of the short-term melatonin administratoin into the third brain ventricle on prolactin, beta-endorphin and luteotropin secretion in ewes kept under the increasing and decreasing daylenght conditions.Additional emphasis is given to dopamine and LHRH release in the madiobasal hypothalmus under the malatonin treatment by the push-pull method.The long-term and short-term actions of melatonin on the hormonal status in ewes is also discussed.

Keywords

EN

BETA-ENDORPHIN; DOPAMINE; LUTEOTROPIN; MELATONIN; PROLACTIN

Discipline

• EXPERIMENTAL_BIOLOGY_&_MEDICINE: EXPERIMENTAL BIOLOGY & MEDICINE

• Publisher: Marceli Nencki Institute of Experimental Biology, Polish Academy of Sciences
• Journal: Acta Neurobiologiae Experimentalis
• Year: 1996
• Volume: 56
• Issue: 3
• Pages: 769-778

Contributors

author

T. Misztal

author

K. Romanowicz

author

B. Barcikowski

• Document Type: review
• Publication order reference: T.Misztal