homeostasis/metabolism
• homozygotes display impaired LPS-induced ACTH release, eliciting a peak of ACTH release at 2 hrs but failing to exhibit an increase at 3 hrs after LPS injection
• defective LPS-induced HPA axis activation is associated with defective LPS-induced Fos expression in PVN neurons, and occurs in the absence of obvious pituitary abnormalities
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• turpentine injection induces only a hypothermic response
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• the increase in temperature seen 20 minutes after exposure to 1 ug/kg LPS is blunted and later increases do not occur
• treatment with 10 ug/kg results in a blunted increase in temperature followed by a hypothermic response
• treatment with 100 ug/kg results in a blunted increase in temperature followed by a profound hypothermic response
• treatment with 1 mg/kg produces a more intense triphasic hypothermia rather than the biphasic hypothermic response seen in wild-type controls
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• in a model of IgE antigen-dependent passive cutaneous anaphylaxis, mice exhibit slightly increased dye extravasation (a measure of edema) compared with wild-type mice
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• turpentine injection induces only a hypothermic response
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immune system
• in a model of IgE antigen-dependent passive cutaneous anaphylaxis, mice exhibit slightly increased dye extravasation (a measure of edema) compared with wild-type mice
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• homozygotes display impaired LPS-induced ACTH release, eliciting a peak of ACTH release at 2 hrs but failing to exhibit an increase at 3 hrs after LPS injection
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