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Immune Surveillance by NK Cells and Phagocytes01:25

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Digestion of Whole Mouse Eyes for Multi-Parameter Flow Cytometric Analysis of Mononuclear Phagocytes
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The renal mononuclear phagocytic system.

Peter J Nelson1, Andrew J Rees, Matthew D Griffin

  • 1University of Washington, Seattle, Washington, USA. nelsonpj@uw.edu

Journal of the American Society of Nephrology : JASN
|December 3, 2011
PubMed
Summary

This review clarifies the roles of kidney macrophages and dendritic cells in health and disease. It addresses confusion surrounding these cells and outlines future research directions for understanding kidney immunity.

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Area of Science:

  • Immunology
  • Nephrology
  • Cell Biology

Background:

  • The renal mononuclear phagocytic system, comprising macrophages (Mø) and dendritic cells (DCs), is crucial for kidney function and pathology.
  • Historical research silos and limited in vivo tools have created ambiguity in defining renal DCs and Mø and their immune functions.
  • This ambiguity complicates understanding of kidney immune responses.

Purpose of the Study:

  • To review and appraise the current knowledge of the renal mononuclear phagocytic system from an immunological perspective.
  • To elucidate the functions of renal mononuclear phagocytes in kidney homeostasis, injury surveillance, and inflammatory repair.
  • To identify knowledge gaps and inconsistencies for future research.

Main Methods:

  • Literature review and synthesis of existing research on renal mononuclear phagocytes.
  • Analysis of physical characteristics, ontogeny, and known functions of renal Mø and DCs.
  • Interpretation of data through the lens of immunological function in the kidney.

Main Results:

  • Description of the physical characteristics, ontogeny, and functions of key renal mononuclear phagocyte subsets.
  • Relating these cells to kidney homeostasis, defense against injury/infection, and inflammatory processes.
  • Identification of significant gaps and controversies in the current understanding.

Conclusions:

  • The immunologic functions of renal mononuclear phagocytes require further clarification.
  • Distinguishing between renal macrophages and dendritic cells is critical for advancing kidney research.
  • Future research should focus on resolving inconsistencies and filling knowledge gaps regarding these cells' roles.