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ENDOCRINE INTERACTION BETWEEN ZINC AND PROLACTIN - AN INTERPRETATIVE REVIEW
(Humana Press Inc, 1995-08-01)
Zinc plays a very important role in animal and human metabolism. Nowadays, it is one of the most extensively studied trace element, since its sphere of action has been demonstrated to be very broad. From the biochemical ...
Effects of gonadectomy on prolactin and LH secretion and the pituitary-thyroid axis in male dogs
(Elsevier B.V., 2009-03-15)
The effects of gonadectomy on the secretion of prolactin, LH, TSH, and thyroxine were investigated. Blood serum hormone concentrations were analysed before and at 20, 120, and 180 min after a single iv TRH injection in ...
Zinc does not inhibit prolactin secretion during insulin-induced hypoglycemia in normal men
(2006-03-01)
Zinc (Zn ++) has been shown as an important physiological inhibitor of pituitary PRL release, and Zn ++ and PRL could be involved in a negative feedback regulatory loop. However, this inhibitory effect has not been detected ...
Lack of inhibitory effect of zinc on prolactin secretion induced by cimetidine
(2005-06-01)
The dopaminergic, serotoninergic and GABA-ergic systems are closely involved in PRL secretion, as well as thyrotropin-releasing hormone. There is some evidence that zinc interacts with some of these neuroamines and ...
Actions of angiotensin II and dopamine in the medial preoptic area on prolactin secretion
(Acad Sciences Czech Republic, Inst Physiology, 2008-01-01)
Dopamine (DA) is known as a primary regulator of prolactin secretion (PRL) and angiotensin II (Ang II) has been recognized as one brain inhibitory factor of this secretion. In this work, estrogen-primed or unprimed ...
Zinc supplementation does not inhibit basal and metoclopramide-stimulated prolactinemia secretion in healthy men
(Urban & Fischer Verlag, 2002-01-01)
Dopamine (DA) and zinc (Zn++) share common mechanisms in their inhibition of prolactin (PRL) secretion. Both substances are present in the same brain areas, where Zn++ is released together with DA, suggesting a modulatory ...
Synergistic effect of glucose and prolactin on GLUT2 expression in cultured neonatal rat islets
(1997-03-01)
We studied the synergistic effect of glucose and prolactin (PRL) on insulin secretion and GLUT2 expression in cultured neonatal rat islets. After 7 days in culture, basal insulin secretion (2.8 mM glucose) was similar in ...
ZINC - AN INHIBITOR OF PROLACTIN (PRL) SECRETION IN HUMANS
(Georg Thieme Verlag, 1989-04-01)
Long-term effect of prolactin treatment on glucose-induced insulin secretion in cultured neonatal rat islets
(1997-07-22)
Insulin secretion and 45SCa2+ uptake and efflux were studied in neonatal rat islets maintained in culture for 7 or 19 days in the absence or presence of prolactin (PRL). Insulin secretion in response to glucose (G), leucine ...
Effect of zinc administration on thyrotropin releasing hormone-stimulated prolactinemia in healthy men
(Kluwer Academic Publ, 1999-12-01)
Previous in vitro studies have demonstrated zinc (Zn++) inhibition of basal and of potassium (K+) or thyrotropin-releasing hormone (TRH)-stimulated prolactin (PRL) secretion, in a selective, reversible, and dose-dependent ...