Salsolinol is present in the bovine posterior pituitary gland and stimulates the release of prolactin both in vivo and in vitro in ruminants.

Salsolinol is present in the bovine posterior pituitary gland and stimulates the release of prolactin both in vivo and in vitro in ruminants. Research Abstract Details 

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Salsolinol is present in the bovine posterior pituitary gland and stimulates the release of prolactin both in vivo and in vitro in ruminants. Abstract Text:

T Hashizume,R Shida,S Suzuki,S Nonaka,C Yonezawa,T Yamashita,E Kasuya,M Sutoh,M ,D ,G M Nagy,T Hashizume,R Shida,S Suzuki,S Nonaka,C Yonezawa,T Yamashita,E Kasuya,M Sutoh,M ,D ,G M Nagy,

The aims of the present study were to determine whether salsolinol (SAL), a dopamine-related compound, is present in the bovine posterior pituitary (PP) gland, and to clarify the effect of SAL on the secretion of prolactin (PRL) in ruminants. SAL was detected in extract of bovine PP gland using high-pressure liquid chromatography with electrochemical detection (HPLC-EC). A single intravenous (i.v.) injection of SAL (5 and 10mg/kg body weight) significantly and dose-dependently stimulated the release of PRL in goats (P<0.05). Plasma PRL levels reached a peak 10min after the injection, then gradually returned to basal values in 60-80min. The PRL-releasing pattern was similar to that in response to sulpiride (a dopamine receptor antagonist). The intracerebroventricular (i.c.v.) injection of 1mg of SAL had no significant effect on the release of PRL in calves, however, 5mg significantly stimulated the release (P<0.05) with peak values reached 30-40min after the injection. Moreover, SAL significantly stimulated the release of PRL from cultured bovine anterior pituitary cells at doses of 10(-6) and 10(-5)M, compared to control cells (P<0.05). Taken together, our data clearly show that SAL is present in extract of the PP gland of ruminants, and has PRL-releasing activity both in vivo and in vitro. Therefore, this endogenous compound is a strong candidate for the factor having PRL-releasing activity that has been previously detected in extract of the bovine PP gland.

Salsolinol is present in the bovine posterior pituitary gland and stimulates the release of prolactin both in vivo and in vitro in ruminants. Publishing Authors By Initials

T Hashizume,R Shida,S Suzuki,S Nonaka,C Yonezawa,T Yamashita,E Kasuya,M Sutoh,M ,D ,GM Nagy,T Hashizume,R Shida,S Suzuki,S Nonaka,C Yonezawa,T Yamashita,E Kasuya,M Sutoh,M ,D ,GM Nagy,

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Salsolinol is present in the bovine posterior pituitary gland and stimulates the release of prolactin both in vivo and in vitro in ruminants. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Domestic animal endocrinology

VOLUME: 34

Page Numbers: 146-52

Journal Abbreviation: Domest. Anim. Endocrinol.

ISSN: 0739-7240

DAY: 16

MONTH: 01

YEAR: 2007

Salsolinol is present in the bovine posterior pituitary gland and stimulates the release of prolactin both in vivo and in vitro in ruminants. Information

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LANGUAGE: eng

NlmUniqueID: 8505191

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Grant and Affiliation Information for Salsolinol is present in the bovine posterior pituitary gland and stimulates the release of prolactin both in vivo and in vitro in ruminants.

AFFILIATION: Faculty of Agriculture, Iwate University, Morioka 020-8550, Japan.

Country: United States

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MEDLINETA: Domest Anim Endocrinol

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