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  • Title: Cachectin/tumor necrosis factor and other cytokines in infectious disease.
    Author: Tracey KJ, Cerami A.
    Journal: Curr Opin Immunol; 1989 Feb; 1(3):454-61. PubMed ID: 2679705.
    Abstract:
    The studies reviewed here represent but a fraction of those published in the field last year, but they serve to illustrate two important points: (1) the cytokine network possesses enormous diversity of biological function, and (2) it is redundant, such that overlapping and synergistic effects are observed between many different cytokines. The impact of this system on the host is pervasive and readily amplifiable, and integrates the diverse responses to infectious disease which may be either beneficial, protecting against infection, or deleterious, causing tissue injury and death. The example of cachectin/TNF illustrates this type of scenario: during local infection or inflammation, low levels of cachectin/TNF act to enhance immune responsiveness, stimulate blood-vessel growth, increase energy mobilization, induce the release of other cytokines, and promote wound-healing; when overwhelming infection occurs, as in septicemia, large quantities of cachectin/TNF reach the circulation and cause shock, MSOF, and death; if a persisting infection develops and cachectin/TNF is chronically secreted, it mediates a state of cachexia which may be fatal. Future studies will undoubtedly advance our understanding of these effects, and that of the other cytokines. The development of novel therapies for inflammation, septic shock, and cachexia may be based on such advances.
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