Immunologic Research

, Volume 43, Issue 1, pp 25–61

Neutrophil apoptosis and the resolution of infection

Article

DOI: 10.1007/s12026-008-8049-6

Cite this article as:
Kennedy, A.D. & DeLeo, F.R. Immunol Res (2009) 43: 25. doi:10.1007/s12026-008-8049-6

Abstract

Polymorphonuclear leukocytes (PMNs) are the most abundant white cell in humans and an essential component of the innate immune system. PMNs are typically the first type of leukocyte recruited to sites of infection or areas of inflammation. Ingestion of microorganisms triggers production of reactive oxygen species and fusion of cytoplasmic granules with forming phagosomes, leading to effective killing of ingested microbes. Phagocytosis of bacteria typically accelerates neutrophil apoptosis, which ultimately promotes the resolution of infection. However, some bacterial pathogens alter PMN apoptosis to survive and thereby cause disease. Herein, we review PMN apoptosis and the ability of microorganisms to alter this important process.

Keywords

NeutrophilCell deathApoptosisPhagocytosisPyroptosisAutophagyMacrophageInflammationPathogenInnate immunity

Copyright information

© GovernmentEmployee: National Institute of Allergy and Infectious Diseases, NIH 2008

Authors and Affiliations

  1. 1.Laboratory of Human Bacterial Pathogenesis, Rocky Mountain LaboratoriesNational Institute of Allergy and Infectious Diseases, National Institutes of HealthHamiltonUSA