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Thomas Rimmelé1, Didier Payen, Vincenzo Cantaluppi

  • 1*Anesthesiology and Critical Care Medicine, Edouard Herriot Hospital, Hospices Civils de Lyon, University Claude Bernard Lyon 1, Lyon, France †Department of Anesthesiology and Critical Care and UMR INSERM 1160; Lariboisière Hospital, AP-HP and University Paris 7, Sorbonne Paris Cité, Paris, France ‡Nephrology, Dialysis and Kidney Transplantation Unit, University of Eastern Piedmont "A. Avogadro", "Maggiore della Carità" University Hospital, Novara, Italy §Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada ||Center for Critical Care Nephrology; The CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania ¶Academia Colombiana de Medicina Critica (ACOMEC) **Division of Critical Care Medicine, Clínica Palermo, Bogotá, Colombia ††School of Medicine, University College Dublin, Dublin, Ireland.

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This summary is machine-generated.

Immune cells like leukocytes show significant changes in sepsis, offering potential as biomarkers for altered responsiveness. Understanding these immune cell dynamics is crucial for developing new sepsis therapies.

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Area of Science:

  • Immunology
  • Sepsis Pathophysiology
  • Cellular Biology

Background:

  • Immune cells are vital in sepsis response.
  • Leukocytes offer dynamic insights into sepsis-induced immune alterations.
  • The 14th Acute Dialysis Quality Initiative (ADQI) conference focused on immune cell changes in sepsis.

Purpose of the Study:

  • To achieve consensus on immune cell functional and phenotypic changes in sepsis.
  • To review methods for studying circulating leukocytes in sepsis.
  • To analyze the impact of treatments on immune cell phenotypes and function.

Main Methods:

  • Review of existing literature on immune cell alterations in sepsis.
  • Analysis of surface marker expression in neutrophils and monocytes.
  • Assessment of T cell apoptosis and lymphopenia in septic shock.

Main Results:

  • Septic neutrophils exhibit resistance to apoptosis.
  • Septic monocytes show reduced HLA-DR expression but preserved antimicrobial function.
  • Sepsis induces lymphopenia and immunosuppression by affecting T cell subtypes.

Conclusions:

  • Immune cell profiling provides critical insights into sepsis.
  • Leukocyte alterations are key indicators of sepsis severity and immune status.
  • Targeted therapies modulating the immune response show promise for sepsis treatment.