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Article
January 1992

Inhibitory Effects of Interleukin 6 on ImmunityPossible Implications in Burn Patients

Author Affiliations

From the Baltimore Regional Burn Center, The Johns Hopkins University School of Medicine, Baltimore, Md.

Arch Surg. 1992;127(1):65-69. doi:10.1001/archsurg.1992.01420010079011
Abstract

• Certain disease states are associated with abnormal increases in the monokine interleukin 6. Increased levels of interleukin 6 have been demonstrated in serum from patients with burns and are associated with systemic increases in endotoxin levels. Using a murine in vitro experimental model, we have studied the effects of interleukin 6 on various measures of immunity. Our data indicate that levels equivalent to the concentrations found in serum of burn victims inhibit T-cell proliferation. The inhibitory effect is dose and time dependent, is specific for T cells, is not due to impairment of interleukin 2 production or of interleukin 2 receptor expression, and is dependent on macrophages. These data suggest that extraordinary increases in interleukin 6 levels may be related to impaired T-cell responses and to an increased susceptibility to infection in the patient with burns.

(Arch Surg. 1992;127:65-69)

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