Feedback Amplification of Neutrophil Function

Research output: Contribution to journalReview article

28 Citations (Scopus)


As the first line of innate immune defense, neutrophils need to mount a rapid and robust antimicrobial response. Recent studies implicate various positive feedback amplification processes in achieving that goal. Feedback amplification ensures effective migration of neutrophils in shallow chemotactic gradients, multiple waves of neutrophil recruitment to the site of inflammation, and the augmentation of various effector functions of the cells. We review here such positive feedback loops including intracellular and autocrine processes, paracrine effects mediated by lipid (LTB4), chemokine, and cytokine mediators, and bidirectional interactions with the complement system and with other immune and non-immune cells. These amplification mechanisms are not only involved in antimicrobial immunity but also contribute to neutrophil-mediated tissue damage under pathological conditions.

Original languageEnglish
Pages (from-to)412-424
Number of pages13
JournalTrends in Immunology
Issue number6
Publication statusPublished - Jun 1 2016


ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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