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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Effect of experimental stroke on peripheral immunity: CNS ischemia induces profound immunosuppression.

The profound damage to the CNS caused by ischemic lesions has been well documented. Yet, relatively little is known about the contribution to and effects on the immune system during stroke. We have focused on both early and late events in the peripheral immune system during stroke in mice and have observed an early activation of splenocytes that conceivably could result in immune-mediated damage in the developing CNS lesion, followed by global immunosuppression that affects the spleen, thymus, lymph nodes and circulation. While this second immunosuppressive phase may not directly enhance infarction size, it without doubt leads to an inability to respond to antigenic challenges, thereby enhancing the risk for crippling systemic infection and septicemia in stroke survivors. These novel findings advocate the need to develop or effectively utilize agents that can block early neural splenic activation and modulate immune cells specific for brain antigens as a means to prevent mobilization of T and B cells carrying a cytokine death warrant to the brain. Equally important for the recovering stroke patient are approaches that can derail the second phase of immune dysfunction and restore the ability to mount a defense against systemic infectious insults.[1]


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