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Enumeration of Major Peripheral Blood Leukocyte Populations for Multicenter Clinical Trials Using a Whole Blood Phenotyping Assay
Published on: September 16, 2012
Leukocyte cell population data as potential markers of COVID-19 disease characterization
Giovanni Introcaso1, Arianna Galotta2, Laura Salvini3
1Università di Milano, Centro Cardiologico Monzino IRCCS, Unit of Laboratory Medicine, Milan, Italy.
Insights
Leukocyte cell population data (CPD) showed increased cell activation in early COVID-19 waves, indicating worse clinical conditions. These hematological parameters can serve as valuable disease markers for risk assessment.
Area of Science:
- Hematology
- COVID-19 Research
- Clinical Diagnostics
Background:
- Hematological parameters are crucial in understanding COVID-19.
- Leukocyte cell population data (CPD) is being explored for its clinical significance.
- Previous studies highlighted the importance of hematological parameters during the COVID-19 pandemic.
Purpose of the Study:
- To assess cell population data (CPD) in SARS-CoV-2 patients.
- To evaluate CPDs as potential novel disease markers for COVID-19.
- To compare CPDs between different waves of the COVID-19 pandemic.
Main Methods:
- Enrolled 540 patients in the 1st wave (Feb-Apr 2020) and 2821 in the 2nd wave (Sep-Dec 2020).
- Diagnosed SARS-CoV-2 using Multiplex rRT-PCR.
- Analyzed CPDs with a Sysmex XN 2000 hematology analyzer and measured C-reactive protein (CRP) and lactate dehydrogenase (LDH).
Main Results:
- Observed increased CPDs across all cell types in both waves compared to reference populations.
- Found 9 CPDs elevated in the 1st wave versus 5 in the 2nd wave.
- Noted significantly higher CPD values (NE-SFL, LY-Y, LY-Z, MO-X, MO-Y), CRP, and LDH in the 1st wave compared to the 2nd wave.
Conclusions:
- CPDs indicated heightened cell activation in 1st wave patients, correlating with worse clinical outcomes.
- CPDs serve as effective markers for disease characterization in COVID-19.
- CPDs show potential utility in developing risk models for COVID-19 patients.
Background:
The usefulness of leukocyte cell population data (CPD) is currently being investigated. In COVID-19 pandemic several reports showed the clinical importance of hematological parameters. Our study aimed to assess CPDs in Sars CoV-2 patients as new disease markers.
Methods:
From February to April 2020 (1st wave) 540 and from September to December 2020 (2nd wave) 2821 patients respectively were enrolled. SARS CoV-2 infection diagnosis was carried out by Multiplex rRT-PCR from nasopharyngeal swabs. CPDs were detected by XN 2000 hematology analyzer (Sysmex Corporation). A comparison between two disease waves was performed. Additionally, C-reactive protein (CRP) and lactate dehydrogenase (LDH) were assayed.
Results:
CPDs were classified into: cell complextity, DNA/RNA content and abnormal sized cells. We detected parameters increased from the reference population for all cell types for both 1st and 2nd wave (p<0.05). However, in the 2nd vs 1st wave 5 CPDs vs 9 CPDs were found. In addition we observed higher CPD values of the 1st compared to 2nd wave: (NE-SFL) (p<0.001), (LY-Y) (p<0.0001), (LY-Z) (p<0.0001), (MO-X) (p<0.0001), (MO-Y) (p<0.0001). These findings were confirmed by the higher concentrations of CRP and LDH in the 1st vs 2nd wave: 17.3 mg/L (8.5-59.3) vs 6.3 mg/L (2.3-17.6) (p<0.001) and 241.5 IU/L (201-345) vs 195 IU/L (174-228) (p< 0.001) (median, interquartile range) respectively.
Conclusions:
CPDs showed increased cell activation in 1st wave patients confirmed by clinical and biochemical data, associated with worse clinical conditions. Results highlighted the CPDs as disease characterization markers or useful for a risk model.
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