Delta-Hemoglobin Equivalent and Granularity Index as Cell-Derived Biomarkers for the Detection of Bacterial Infections.

Zimmermann, Mathias; Yürek, Salih; Konzack, Reno; Walter, Michael; Schober, Patrick; Luedi, Markus M.; Hönemann, Christian (2021). Delta-Hemoglobin Equivalent and Granularity Index as Cell-Derived Biomarkers for the Detection of Bacterial Infections. Clinical Laboratory, 67(8) Clinical Laboratory Publications GmbH 10.7754/Clin.Lab.2021.210104

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BACKGROUND

Prompt and precise detection of an infection in the blood is of great clinical importance in terms of early therapy initiation and the patient's prognosis. Infection-triggered inflammatory cellular and humoral signaling cascades offer great opportunities to redefine standard tests. However, while inexpensive and easy-to-use biomarkers for the detection of infections and the concomitant inflammatory processes exist, they are rarely used in clinical practice. We aimed to investigate the correlation of Granularity Index (GI) and Delta-hemoglobin equivalent (Delta-He) as inexpensive and easy-to-use cell-derived infection markers with established acute-phase parameters in a randomly selected patient.

METHODS

We analyzed plasma concentrations of the established C-reactive protein (CRP) and procalcitonin (PCT) and leukocyte and thrombocyte counts in blood samples of 1,787 patients undergoing routine laboratory inflammation diagnostics. We also measured the Granularity Index (GI) and Delta-hemoglobin equivalent (Delta-He) in this cohort between February 2019 and February 2020.

RESULTS

Delta-He and GI Index significantly correlated with CRP concentration (AUC 0.72, 95% CI 0.71 - 0.74; p < 0.001 for both analytes) and thrombocyte count (p < 0.001 for both analytes) but not with leukocyte count (AUC 0.54, 95% CI 0.50 - 0.59, p < 0.67). Furthermore, Delta-He significantly correlated with PCT (AUC 0.65, 95% CI 0.63 - 0.68, p < 0.001) while GI Index did not. Additionally, thrombocyte count significantly correlated with CRP (p < 0.001) and with PCT concentrations (p < 0.001).

CONCLUSIONS

Delta-He and GI are two novel, inexpensive and easy-to-use cell-derived hematological biomarkers with the potential to be used as fully automated and highly standardized parameters. These biomarkers would be available on a 24 hours basis in the routine laboratory for the detection of bacterial infections by measuring a complete blood count (CBC) with differential and reticulocyte counts.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Intensive Care, Emergency Medicine and Anaesthesiology (DINA) > Clinic and Policlinic for Anaesthesiology and Pain Therapy

UniBE Contributor:

Lüdi, Markus

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1433-6510

Publisher:

Clinical Laboratory Publications GmbH

Language:

English

Submitter:

Jeannie Wurz

Date Deposited:

14 Sep 2021 09:11

Last Modified:

05 Dec 2022 15:52

Publisher DOI:

10.7754/Clin.Lab.2021.210104

PubMed ID:

34383401

BORIS DOI:

10.48350/158428

URI:

https://boris.unibe.ch/id/eprint/158428

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