M del Carmen Díaz

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In order to determine whether ionotropic (iGluRs) and metabotropic (mGluRs) glutamate receptor activation modulates oxytocin release in male rats, we investigated the effect of agonists of both types of glutamate receptors on oxytocin release from hypothalamus and posterior pituitary. Kainate and quisqualate (1 mM) increased hypothalamic oxytocin release.(More)
The purpose of the present study was to examine the in vitro effect of L-glutamate and its agonists on basal and potassium-evoked GABA release from incubated mediobasal hypothalamus (MBH) of intact, ovariectomized (OVX) and OVX-estrogenized female rats. L-glutamate (100 microM) decreased evoked GABA release from MBH of intact female rats in diestrus. NMDA(More)
In order to examine the role of hypothalamic SP in the feedback regulation of prolactin, we studied the effect of prolactin and dopamine on SP concentration and release, and the effect of SP on dopamine release. Hypothalamic fragments from male Wistar rats were incubated in the presence of prolactin, dopamine or SP under basal and K(+)-stimulated(More)
The efflux of endogenous gamma-aminobutyric acid (GABA) has been studied using small hypothalamic fragments containing arcuate-paraventricular nuclei and median eminence from the rat brain. The amount of GABA present in the medium and the tissue GABA content were quantified by radioreceptor assay. The endogenous GABA efflux was found to be dependent upon(More)
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