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Anti-tumor necrosis factor antibody therapy fails to prevent lethality after cecal ligation and puncture or endotoxemia.

M K Eskandari, G Bolgos, C Miller, D T Nguyen, L E DeForge and D G Remick
J Immunol May 1, 1992, 148 (9) 2724-2730;
M K Eskandari
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G Bolgos
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C Miller
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D T Nguyen
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L E DeForge
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D G Remick
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Abstract

Cytokines have been studied intensively to delineate their role in the altered pathophysiology observed in septic shock. We studied the role of TNF in the lethality of two well characterized models of septic shock by inhibiting TNF's activity with a specific antibody. In the first model, sepsis was induced by cecal ligation and puncture (CLP), and in the second model sepsis was induced by either an i.p. or i.v. injection of LPS. After CLP, plasma endotoxin was detectable within 4 h and reached a peak at 8 h (136 +/- 109 ng/ml). TNF bioactivity peaked at 12 h (528 +/- 267 pg/ml) at a significantly higher level than sham-operated control mice (64 +/- 31 pg/ml). After i.p. LPS, TNF peaked much more quickly (90 min) compared with CLP and at a significantly higher level (107,900 +/- 25,000 pg/ml). Another cytokine studied in septic shock, IL-6, peaked at 12 h after CLP at 1011 +/- 431 pg/ml, and at 90 min after lethal LPS at 16,300 +/- 3,700 pg/ml. Mice were treated with an anti-TNF antibody that has been shown previously to inhibit in vivo TNF activity. Antibody treatment of mice subjected to CLP significantly reduced TNF bioactivity but did not reduce mortality or pulmonary neutrophilic infiltration. In the i.v. LPS model, anti-TNF antibody treatment concomitant with LPS injection reduced plasma TNF activity from 80,000 +/- 20,000 pg/ml to undetectable levels. However, anti-TNF treatment immediately before either i.v. or i.p. LPS did not reduce mortality. Additionally, when the antibody was administered 4 h before the lethal i.v. LPS, there was no reduction in lethality. These data show that in two separate models of septic shock blockade of TNF biologic activity will not prevent lethality.

  • Copyright © 1992 by American Association of Immunologists

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The Journal of Immunology
Vol. 148, Issue 9
1 May 1992
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Anti-tumor necrosis factor antibody therapy fails to prevent lethality after cecal ligation and puncture or endotoxemia.
M K Eskandari, G Bolgos, C Miller, D T Nguyen, L E DeForge, D G Remick
The Journal of Immunology May 1, 1992, 148 (9) 2724-2730;

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Anti-tumor necrosis factor antibody therapy fails to prevent lethality after cecal ligation and puncture or endotoxemia.
M K Eskandari, G Bolgos, C Miller, D T Nguyen, L E DeForge, D G Remick
The Journal of Immunology May 1, 1992, 148 (9) 2724-2730;
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Print ISSN 0022-1767        Online ISSN 1550-6606