TY - JOUR PY - 1995// TI - Endogenous interleukin 10 prevents apoptosis in macrophages during salmonella infection JO - Biochemical and biophysical research communications A1 - Arai, T. A1 - Hiromatsu, K. A1 - Nishimura, H. A1 - Kimura, Y. A1 - Kobayashi, N. A1 - Ishida, H. A1 - Nimura, Y. A1 - Yoshikai, Y. SP - 600 EP - 607 VL - 213 IS - 2 N2 - To elucidate the biological roles of endogenous interleukin 10 (IL-10) in macrophage responses during bacterial infection, we examined in vitro effects of neutralizing IL-10 by anti-IL-10 monoclonal antibodies (mAb) on apoptosis of the peritoneal macrophages following Salmonella choleraesuis infection. Marked increments of TNF-α production were observed in the culture supernatant later than 6 h after in vitro culture with anti-IL-10 mAb. These macrophages succumbed to apoptosis at this stage accompanied by marked increment of IL-1 release, despite the expression of higher amount of endogenous heat shock protein 70, an inhibitor of TNF-α-mediated apoptosis. These results suggest that endogenous IL-10 plays an essential role in protection of Salmonella-infected macrophages from autocrine suicide caused by excessive production of TNF-α after killing of Salmonella. © 1995 by Academic Press, Inc.

Language: en

LA - en SN - 0006-291X UR - http://dx.doi.org/10.1006/bbrc.1995.2174 ID - ref1 ER -