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Inflammatory molecules expression pattern for identifying pathogen species in febrile patient serum
Kuan-Ting Liu1, Yao-Hua Liu2, Chun-Yu Lin3
1Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, R.O.C.; School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, R.O.C.; Department of Emergency Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan, R.O.C.
Patterns of inflammatory molecules like cytokines and chemokines can help distinguish bacterial from viral infections. While not definitive for species identification, these markers, including interleukin-6 and interferon-γ-inducible protein 10, aid in clinical management.
Area of Science:
- Immunology
- Infectious Diseases
- Biochemistry
Background:
- Cytokines and chemokines are established markers for infections.
- Previous studies have explored their role in differentiating bacterial and viral pathogens.
- Accurate pathogen identification is crucial for effective treatment.
Purpose of the Study:
- To investigate if inflammatory molecule patterns can identify pathogen species.
- To compare inflammatory profiles in patients with bacterial versus viral infections.
- To assess the utility of specific molecules like IL-6, IL-8, and IP-10.
Main Methods:
- Serum samples from 132 febrile patients (>38.3°C) were analyzed.
- Cytometric bead array was used to quantify inflammatory molecules.
- Patients were categorized into bacterial (positive/negative blood culture) and viral infection groups.
Main Results:
- Bacterial infections showed higher interleukin-6 (IL-6) and interleukin-8 (IL-8) than viral infections.
- Viral infections were associated with higher interferon-γ-inducible protein 10 (IP-10).
- Dengue virus induced the highest IP-10 levels; IL-8 differentiated Gram-negative from Gram-positive bacteria but was insufficient for species identification.
Conclusions:
- Inflammatory molecule patterns can assist in differentiating bacterial and viral infections.
- While useful for management, these markers alone are insufficient for precise pathogen species identification.
- Further research into combined molecular markers may enhance diagnostic accuracy.
