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MONOAMINE OXIDASE ACTIVITY IN SOME BRAIN AREAS OF SHEEP AFTER HORMONAL STIMULATION

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Abstract:

The influence of hormonal superovulatory preparations Folistiman (450 IU FSH, Spofa, Prague) and serum gonadotropin (1500 IU PMSG, Spofa, Prague) on monoamine oxidase (MAO), the degradative enzyme of catecholamines, was investigated in some areas of the brain regulating reproductive functions (area preoptica of the hypothalamus, pituitary gland, and pineal gland) in ewes with synchronized oestrus (20 mg chlorsuperlutin) during the oestrous period using a radiochemical method. After intramuscular administration of 1500 IU PMSG, marked increase of MAO activity was found in the area preoptica (p < 0.05) and in the pituitary gland (p < 0.01) in comparison with the control group. No change occurred in MAO activity after ovarian stimulation with FSH. Administration of the above superovulatory preparations failed to induce MAO activity in the pineal gland of sheep.

Keywords: area preoptica; fsh; monoamine oxidase; pineal gland; pituitary gland; pmsg; sheep; superovulation

Document Type: Research Article

Publication date: 2000-12-31

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