Regulation of the peroxisome proliferator-activated receptor alpha gene by glucocorticoids
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Contextual fear conditioning under training conditions involving high stressor intensities has been proposed as an animal model for traumatic memories. The strength of memory for this task has been related to the intensity of the conditioning stressor and ...
We studied the possible involvement of corticosteroids in the establishment and long-term expression of contextual fear conditioning and questioned whether a corticosteroid action might be dependent upon stimulus intensity at training. Experiments included ...
Leptin is a hormone which is produced in adipose tissue and which plays a role in the regulation of energy homeostasis. The expression of the ob gene, encoding leptin, is under multi-hormonal control. We have shown previously that high doses of glucocortic ...
Recent studies performed with null mice suggested a role of either RXR alpha or PPAR gamma in murine placental development. We report here that both PPAR gamma and RXR alpha are strongly expressed in human villous cytotrophoblasts and syncytiotrophoblasts. ...
Adrenal steroid hormones modulate learning and memory processes by interacting with specific glucocorticoid receptors at different brain areas. In this article, certain components of the physiological response to stress elicited by learning situations are ...
Activators of peroxisome proliferator activated receptor-alpha, a nuclear hormone receptor that heterodimerizes with retinoid X receptor, stimulate epidermal differentiation and inhibit proliferation. Here we determined the anti-inflammatory effects of per ...
We investigated the effects of piracetam, a nootropic, on learning and memory formation for a passive avoidance task in day-old chicks. To test for the possible cognitive-enhancing properties of piracetam, a weak learning version of this task--whereby chic ...
Peroxisome proliferator-activated receptors (PPARs) are nuclear hormone receptors that can be activated by fatty acids and peroxisome proliferators. The PPAR alpha subtype mediates the pleiotropic effects of these activators in liver and regulates several ...
Glucocorticoids modulate brain function and behaviour through different mechanisms. Although classical effects are mediated through intracellular receptors that modulate gene transcription, recent evidence supports the existence of rapid, nongenomic steroi ...
Treatment with glucocorticoids increases the concentration of plasma high-density lipoprotein (HDL), which is inversely correlated to the development of atherosclerosis. Previously, we demonstrated that repeated administration of glucocorticoids increases ...