Evaluation of HLA-DR expression in monocytes and CD64 in neutrophils as A predictor of SEPSIS/sirs in the infectious-inflammatory process

Copyright © 2023. Published by Elsevier B.V..

Sepsis is a highly fatal disease that affects millions of people worldwide every year. Currently, the diagnosis of sepsis is made by identifying at least two symptoms of systemic inflammatory response syndrome (SIRS), along with confirming the presence of microorganisms using a blood culture examination. Some biomarkers are already used to aid in the diagnosis, such as increased levels of C-reactive protein (CRP), leukocytes, immature granulocytes (IG), and bands. In addition, studies have shown a relationship between the expression of certain antigen receptors in the body's defense cells and its infectious state. CD64 is a receptor expressed in monocytes, and, in cases of infection, its expression is strongly observed in neutrophils. On the other hand, the class II MHC (major histocompatibility complex) marker, HLA-DR (human leukocyte antigen-DR), decreases its expression in monocytes in response to infection. This cohort study was conducted with 77 adult patients from a university hospital, divided into two groups: Non-Sepsis/SIRS and Sepsis/SIRS. The selected samples were analyzed by flow cytometry, identifying the expression of CD64 and HLA-DR according to their MFI, and calculating the sepsis index (SI) for each patient. All three parameters exhibited significant differences in expression between the two groups. When compared to the laboratory tests already in use, the utilization of HLA-DR, CD64, and the new index has shown greater sensitivity and specificity in identifying sepsis. This study contributes to knowledge about the relationship between the expression of antigens on defense cells and sepsis. The use of these biomarkers can help to improve the diagnosis and treatment of sepsis, which may contribute to the reduction of mortality related to the disease.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:524

Enthalten in:

Journal of immunological methods - 524(2024) vom: 02. Jan., Seite 113589

Sprache:

Englisch

Beteiligte Personen:

de Freitas, Clara Giffoni [VerfasserIn]
Farias, Mariela Granero [VerfasserIn]

Links:

Volltext

Themen:

Biomarkers
CD64
Flow cytometry
HLA-DR
HLA-DR Antigens
Journal Article
Receptors, IgG
Research Support, Non-U.S. Gov't
Sepsis
Sepsis index

Anmerkungen:

Date Completed 01.01.2024

Date Revised 04.01.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.jim.2023.113589

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM365346829