Mast cell stabilization improves survival by preventing apoptosis in sepsis.
Mast cell stabilization improves survival by preventing apoptosis in sepsis.
复制标题
肥大细胞稳定通过预防败血症的凋亡来改善生存。
DOI:
10.4049/jimmunol.1000273
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发表时间:
2010-07-01
期刊:
影响因子:
--
通讯作者:
Ulloa L
中科院分区:
文献类型:
--
作者:
Ramos L;Peña G;Cai B;Deitch EA;Ulloa L
Inhibiting single cytokines produced modest effects in clinical trials, in part because the cytokines werenot specific for sepsis, and sepsis may require cellular strategies. Previous studies reported that mast cells (MCs) fight infections in early sepsis. In this study, we report that MC stabilizers restrain serum TNF levels and improve survival in wild-type but not in MC-deficient mice. Yet, MC depletion in knockout mice attenuates serum TNF but does not improve survival in sepsis. Serum HMGB1 was the only factor correlating with survival. MC stabilizers inhibit systemic HMGB1 levels and rescue mice from established peritonitis. MC stabilizers fail to inhibit HMGB1 secretion from macrophages, but they prevent apoptosis and caspase-3 activation in sepsis. These results suggest that MC stabilization provides therapeutic benefits in sepsis by inhibiting extracellular release of HMGB1 from apoptotic cells. Our study provides the first evidence that MCs have major immunological implications regulating cell death in sepsis and represent a pharmacological target for infectious disorders in a clinically realistic time frame.
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