TRANSIENT MONOCYTE RELEASE OF INTERLEUKIN-10 IN RESPONSE TO TRAUMATIC BRAIN INJURY
1999; Lippincott Williams & Wilkins; Volume: 12; Issue: 1 Linguagem: Inglês
10.1097/00024382-199907000-00002
ISSN1540-0514
AutoresRichard Shimonkevitz, David Bar‐Or, Lisbeth Harris, Kenneth C. Dole, Lisa McLaughlin, Richard L. Yukl,
Tópico(s)Immune cells in cancer
ResumoA significant component of the immune response to trauma results in the systemic presence of cytokines which have the potential to suppress the patient's immune response to infection and contribute to post-injury complications. We assayed peripheral blood leukocytes obtained from 10 patients with head trauma to determine their production of interleukin (IL). Serum was assayed for the presence of IL-10, TGF±1, and IFN± by ELISA. Peripheral blood leukocytes were screened for intracellular IL-10 and IFN± by fluorescence-activated flow cytometry, and cytokine-specific mRNA was detected by the polymerase chain reaction. We detected an immediate, but transient, presence of IL-10 in the sera of all 10 patients who suffered head trauma. IL-10–specific intracytoplasmic immunofluorescence was also detected immediately after injury in peripheral blood monocytes, but not in lymphocytes or granulocytes. IL-10–specific mRNA was detected in peripheral blood leukocytes in only 50% of patients immediately after injury, when the highest serum levels of IL-10 were observed. Our data indicates that release of pre-formed IL-10 by monocytes contributes to the presence of IL-10 found in patient peripheral blood immediately after head injury.
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