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One Virus, Two Diseases: Evaluation of Clinical and Immunological Differences in Covid-19 and Multisystem

Sefika Ilknur Kokcu Karadag1, Emine Hafize Erdeniz2, Esra Ozkan3

  • 1Department of Pediatric Allergy and Immunology, Ondokuz Mayis University Faculty of Medicine, Samsun, Türkiye.

Sisli Etfal Hastanesi Tip Bulteni
|May 29, 2024
PubMed

Insights

Early detection of multisystem inflammatory syndrome in children (MIS-C) may involve identifying lymphopenia, increased B cells, and altered T cell profiles. These immunological markers can aid in distinguishing MIS-C from COVID-19 in pediatric patients.

Area of Science:

  • Pediatric Immunology
  • Infectious Diseases
  • Clinical Diagnostics

Background:

  • Multisystem inflammatory syndrome in children (MIS-C) is a serious condition linked to COVID-19.
  • Early and accurate diagnosis of MIS-C is crucial for timely intervention and improved patient outcomes.
  • Understanding the immunological differences between MIS-C and COVID-19 in children is essential for diagnostic development.

Purpose of the Study:

  • To identify early immunological markers for the detection of MIS-C in children.
  • To compare immunological profiles of MIS-C patients with those of pediatric COVID-19 patients.
  • To explore potential diagnostic indicators for MIS-C through immunological analysis.

Main Methods:

  • Retrospective analysis of immunological data from 33 MIS-C patients and 33 pediatric COVID-19 patients.
  • Inclusion of 10 healthy children as controls.
  • Comparison of complete blood counts, inflammatory markers, and lymphocyte subsets between groups.

Main Results:

  • MIS-C patients exhibited more pronounced lymphopenia, thrombocytopenia, anemia, and neutrophilia compared to COVID-19 patients.
  • Elevated ferritin, D-dimer, and C-reactive protein levels were observed in MIS-C patients.
  • Increased B cell proportion, inverted CD4/CD8 ratio, and presence of active T cells (CD3+CD38+HLA-DR+) were significant findings in MIS-C.

Conclusions:

  • Lymphopenia, increased B cells, reversed CD4/CD8 ratio, and active T cells are potential early diagnostic markers for MIS-C.
  • These immunological findings may assist in differentiating MIS-C from COVID-19 in pediatric populations.
  • Further research can validate these markers for routine clinical use in early MIS-C diagnosis.
Abstract

Keywords:
COVID-19Childimmunologymultisystem inflammatory syndrome

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