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Query: UMLS:C0155339 (Brown)
 12,436 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The results described herein indicate that elevation of IL-1 in rat brain, either by infusion of IL-1 into the brain or by stimulation of release of endogenous IL-1 in the brain by LPS, rapidly suppresses a variety of immune responses measured in peripheral lymphocytes. This effect can be blocked by infusion of alpha-MSH into brain, an attribute that was used to indicate that the effects of LPS infusion occurred by stimulation of endogenous IL-1 and not some other influence of LPS. That suppression of cellular immune responses indeed describes the consequences of elevating IL-1 in brain was shown by determining the time course of effects and thereby demonstrating that rebound enhancement of cellular immune responses did not occur after either IL-1 or LPS. Studies that examined the mechanisms by which brain IL-1 affects immune responses indicated that IL-1 influences peripheral lymphocytes by stimulation of CRF in the central nervous system and that CRF in turn causes suppression of cellular immune responses through activation of both the pituitary-adrenal axis and the autonomic nervous system. These findings have also been observed in another laboratory. Moreover, Brown et al. have shown that IL-1 in brain suppresses macrophage function in addition to the suppression of lymphocyte functions described herein. The physiologic significance of IL-1 actions in the brain on immune responses remains to be determined, but the demonstration that this cytokine influences immune processes by acting in brain opens for study another means by which brain and immune system interact.
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PMID:Widespread activation and consequences of interleukin-1 in the brain. 782 22

Brown tumors may occur secondary to hyperparathyroidism in patients with chronic renal failure (CKD). They are increasingly rare because hyperparathyroidism in now diagnosed and treated at an early stage. We report 67-year-old man who had been on hemodialysis for CRF for over 3 years, who presented with back pain over the thoracolumbar junction from 2 years ago and because of pain he could not stand or walk in the last 3 months before surgery. Ambulation was regained after surgical decompression and stabilization. In conclusion, when brown tumor arises in the spine, surgery may be needed to preserve neurologic function.
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PMID:Brown tumor of lumbar spine in chronic renal failure: a case report. 2513 Jan 59