Anjo Chover-Gonzalez

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We have investigated the effect of (a) stress and (b) steroid feed-back on the interleukin-1 beta (IL-1 beta)-mediated increase of corticotropin-releasing factor (CRF) mRNA in the hypothalamic paraventricular nucleus. Both IL-1 beta and stress resulted in increased levels of CRF mRNA and when both were given together, the combination resulted in an additive(More)
We have utilized the open field and learned helplessness (LH) models of psychological stress to determine whether a differential response to stress can affect the severity of adjuvant-induced arthritis (AA) within a single rat strain. In response to open field stress, the corticosterone response of the low emotivity rats was significantly lower than that of(More)
The development of adjuvant-induced arthritis in the rat is associated with an activation of the hypothalamo-pituitary-adrenal axis. In the Piebald-Viral-Glaxo strain of rat there is however a paradoxical decrease in corticotrophin-releasing factor (CRF) mRNA in the hypothalamic paraventricular nucleus (PVN) and a decrease in CRF-41 peptide release into the(More)
We have previously demonstrated that Gram-negative bacterial endotoxin can exert long-term protective effects against the chronic inflammatory disease adjuvant arthritis in rats. The present study was designed to investigate the mechanisms and time-course of hypothalamo-pituitary-adrenocortical (HPA) axis activity and cytokine secretion underlying this(More)
Previous studies have revealed that a single exposure to an acute stress or acute immune stimulus can produce long-lasting changes in the activity and responsiveness of the hypothalamo-pituitary-adrenal (HPA) axis. The HPA axis is believed to be an important component in determining the susceptibility and severity of inflammation in autoimmune disease(More)
The effects of cytokines in stimulating neurohypophysial hormone release have not been well characterized. In the present study, we have investigated the effect of intraperitoneal injection of recombinant human interleukin (IL)-1 beta on oxytocin release in sham-operated controls, adrenalectomized (ADX) rats and ADX rats given either low or high doses of(More)
We have used the technique of in situ hybridization histochemistry to determine corticotropin-releasing factor (CRF) mRNA in the hypothalamic paraventricular nucleus (PVN) and proopiomelanocortin (POMC) mRNA in the anterior pituitary of rats given a single ip injection of either interleukin (IL)-2 or IL-4. IL-2 increased POMC mRNA in the anterior pituitary(More)
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