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[Clinical value of CD64 expression in adults with measles complicating bacterial pneumonia]
Jia-Liang Tang1, Wen-Fang Xu, Yong Wu
1The Dou-Men People's Hospital of Shaoxin, Zhejiang 312000, China. tangjl1967@yahoo.com.cn
Objective:
To study the clinical value of expression of peripheral blood neutrophil CD64 in adults with measles complicating pneumonia.
Methods:
106 patients were divided into two groups by clinical manifestation and bacteria study: measles complicating bacterial pneumonia group and measles complicating viral pneumonia, using flow cytometry determination of CD64, C-reactive protein (CRP) and white blood cell (WBC) count.
Results:
The expression of CD64 in the bacterial pneumonia group with eruptive stage was (32.15 +/- 11.07) MFI, which was significantly higher than that in the group of with recovery stage (10.6 +/- 3.23) MFI (P < 0.01) and viral pneumonia (9.55 +/- 3.48) MFI (P < 0.01). These markers were considered positive if CD64 > or = 8.5 MFI, CRP > or = 10 mg/L and WBC > or = 9.05 x 10(9)/L. Their sensitivity was 78.12%, 80.48% and 59.37%. Their specificity was 76.19% ,67.67% and 64.28%. Their accuracy rate was 77.35%, 74.52%, 61.32%; CD64 has a positive relationship with CRP.
Conclusion:
Compared to CRP, expression of peripheral blood neutrophil CD64 can be a better marker in the early diagnosis of patients with measles complicating bacterial pneumonia and as one of the indicators of disease conditions.
Insights
Neutrophil CD64 expression is a superior early diagnostic marker for bacterial pneumonia complicating measles compared to C-reactive protein (CRP). This finding aids in distinguishing bacterial from viral pneumonia in measles patients.
Area of Science:
- Immunology
- Infectious Diseases
- Clinical Diagnostics
Context:
- Measles can lead to secondary bacterial or viral pneumonia.
- Accurate differentiation between bacterial and viral pneumonia is crucial for appropriate treatment.
- Neutrophil CD64 expression is an inflammatory marker.
Purpose:
- To evaluate the clinical utility of peripheral blood neutrophil CD64 expression in diagnosing bacterial pneumonia complicating measles.
- To compare the diagnostic value of CD64 with C-reactive protein (CRP) and white blood cell (WBC) count.
Summary:
- Neutrophil CD64 expression was significantly higher in patients with measles complicating bacterial pneumonia during the eruptive stage compared to the recovery stage or viral pneumonia.
- CD64 demonstrated good sensitivity (78.12%) and specificity (76.19%) for diagnosing bacterial pneumonia, with a positive correlation with CRP.
- CD64 expression is a valuable early diagnostic marker for bacterial pneumonia in measles patients, outperforming CRP.
Impact:
- Provides a more accurate and earlier diagnostic tool for bacterial pneumonia in measles cases.
- Facilitates timely and targeted antibiotic therapy, potentially improving patient outcomes.
- Contributes to a better understanding of inflammatory markers in complex infectious diseases.
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