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Updated: May 25, 2026

Visualisation and Quantification of Intracellular Interactions of Neisseria meningitidis and Human α-actinin by Confocal Imaging
Published on: October 24, 2010
Immunologic biomarkers for bacterial meningitis
Mina Yekani1, Mohammad Yousef Memar2
1Department of Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran.
Abstract:
Meningitis is defined as the inflammation of the meninges that is most often caused by various bacterial and viral pathogens, and is associated with high rates of mortality and morbidity. Early detection of bacterial meningitis is essential to appropriate antibiotic therapy. Alterations in immunologic biomarkers levels have been considered the diagnostic approach in medical laboratories for the identifying of infections. The early increasing immunologic mediators such as cytokines and acute phase proteins (APPs) during bacterial meningitis have made they significant indicators for laboratory diagnosis. Immunology biomarkers showed wide variable sensitivity and specificity values that influenced by different reference values, selected a certain cutoff point, methods of detection, patient characterization and inclusion criteria, as well as etiology of meningitis and time of CSF or blood specimens' collection. This study provides an overview of different immunologic biomarkers as diagnostic markers for the identification of bacterial meningitis and their efficiencies in the differentiating of bacterial from viral meningitis.
Insights
Early detection of bacterial meningitis is crucial. This study reviews immunologic biomarkers like cytokines and acute phase proteins (APPs) for accurate diagnosis and differentiating it from viral meningitis.
Area of Science:
- Immunology
- Infectious Diseases
- Clinical Diagnostics
Background:
- Meningitis, inflammation of the meninges, often results from bacterial or viral pathogens, leading to significant mortality and morbidity.
- Early diagnosis of bacterial meningitis is critical for timely antibiotic treatment.
- Immunologic biomarkers, including cytokines and acute phase proteins (APPs), show potential for early infection identification.
Purpose of the Study:
- To provide an overview of various immunologic biomarkers used in the laboratory diagnosis of bacterial meningitis.
- To evaluate the efficiency of these biomarkers in differentiating bacterial from viral meningitis.
Main Methods:
- Review of existing literature on immunologic biomarkers for meningitis diagnosis.
- Analysis of factors influencing biomarker sensitivity and specificity, such as reference values, cutoff points, detection methods, patient characteristics, and sample collection timing.
Main Results:
- Immunologic mediators like cytokines and APPs increase early in bacterial meningitis, serving as significant diagnostic indicators.
- The diagnostic accuracy of immunologic biomarkers varies due to multiple influencing factors.
Conclusions:
- Immunologic biomarkers are valuable tools for identifying bacterial meningitis.
- Further research is needed to optimize the use of these biomarkers for accurate differentiation between bacterial and viral meningitis, considering various influencing factors.
Related Concept Videos
Viral Meningitis
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology

