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- W2000539262 endingPage "287" @default.
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- W2000539262 abstract "Physical stressors such as infection, inflammation and tissue injury elicit activation of the hypofhalamic-pituitary-adrenal (HPA) axis. This response has significant implications for both immune and central nervous system function. Investigations in rats into the neural substrates responsible for HPA axis activation to an immune challenge have predominantly utilized an experimental paradigm involving the acute administration of the pro-inflammatory cytokine interleukin-1 β (IL-1β). It is well recognized that medial parvocellular corticotrophin-releasing factor cells of the paraventricular nucleus (mPVN CRF) are critical in generating HPA axis responses to an immune challenge but little is known about how peripheral immune signals can activate and/or modulate the mPVN CRF cells. Studies that have examined the afferent control of the mPVN CRF cell response to systemic IL-1β have centred largely on the inputs from brainstem catecholamine cells. However, other regulatory neuronal populations also merit attention and one such region is a component of the limbic system, the central nucleus of the amygdala (CeA). A large number of CeA cells are recruited following systemic IL-lβ administration and there is a significant body of work indicating that the CeA can influence HPA axis function. However, the contribution of the CeA to HPA axis responses to an immune challenge is only just beginning to be addressed. This review examines three aspects of HPA axis control by systemic IL-lβ; (i) whether the CeA has a role in generating HPA axis responses to systemic IL-1 β, (ii) the identity of the neural connections between the CeA and mPVN CRF cells that might be important to HPA axis responses and (iii) the mechanisms by which systemic IL-lβ triggers the recruitment of CeA cells." @default.
- W2000539262 created "2016-06-24" @default.
- W2000539262 creator A5014585051 @default.
- W2000539262 creator A5024464118 @default.
- W2000539262 creator A5091875410 @default.
- W2000539262 date "2001-01-01" @default.
- W2000539262 modified "2023-09-24" @default.
- W2000539262 title "The Central Nucleus of the Amygdala; a Conduit for Modulation of HPA Axis Responses to an Immune Challenge?" @default.
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