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Papan C, Sidorov S, Greiter B, Bühler N, Berger C, Becker SL, Meyer Sauteur PM. Combinatorial Host-Response Biomarker Signature (BV Score) and Its Subanalytes TRAIL, IP-10, and C-Reactive Protein in Children With Mycoplasma pneumoniae Community-Acquired Pneumonia. J Infect Dis 2024; 230:e247-e253. [PMID: 38092364 PMCID: PMC11326813 DOI: 10.1093/infdis/jiad573] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 11/04/2023] [Accepted: 12/14/2023] [Indexed: 01/09/2024] Open
Abstract
BACKGROUND Host-response biomarkers to differentiate bacterial from viral etiology in children with respiratory infections have shown high accuracies, but are understudied in Mycoplasma pneumoniae (Mp) infections. METHODS We compared BV scores (0-34 indicating viral etiology, and 66-100 indicating bacterial etiology), tumor necrosis factor-related apoptosis-inducing ligand (TRAIL; pg/mL), interferon-γ inducible protein 10 (IP-10; pg/mL), and C-reactive protein (CRP; mg/L) serum levels between Mp-positive (Mp+) and Mp-negative (Mp-) community-acquired pneumonia (CAP) patients. We performed receiver operating characteristic (ROC) curve analyses for clinical features and biomarkers. RESULTS Of 80 CAP patients (median age, 6.3 years; 57.5% male), 26 had Mp+CAP. In Mp+CAP patients, compared to Mp-CAP patients, BV scores were lower (14.0 [3.0-27.8] vs 54.0 [12.0-84.8]; P = .0008), TRAIL levels were higher (86.5 [67.4-123.0] vs 65.5 [42.5-103.9]; P = .025), CRP levels were lower (12.9 [4.0-22.3] vs 36.7 [13.0-132.8]; P = .0019), and IP-10 levels were comparable (366.0 [150.2-603.8] vs 331.0 [154.3-878.8]; P = .73) (all median [interquartile range]). ROC analyses yielded a comparable discriminatory accuracy for the combination of age, fever duration, and duration of respiratory symptoms, with either procalcitonin or BV score (area under the ROC curve, 0.87 vs 0.86; P = .94). CONCLUSIONS Children with Mp+CAP have atypically low, viral levels of the BV score, underscoring the complementary role of microbiological testing.
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Affiliation(s)
- Cihan Papan
- Center for Infectious Diseases, Institute of Medical Microbiology and Hygiene, Homburg, Saarland University, Germany
- Institute for Hygiene and Public Health, University Hospital Bonn, Bonn, Germany
| | - Semjon Sidorov
- Division of Infectious Diseases and Hospital Epidemiology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Beat Greiter
- Division of Infectious Diseases and Hospital Epidemiology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Nina Bühler
- Center for Infectious Diseases, Institute of Medical Microbiology and Hygiene, Homburg, Saarland University, Germany
| | - Christoph Berger
- Division of Infectious Diseases and Hospital Epidemiology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Sören L Becker
- Center for Infectious Diseases, Institute of Medical Microbiology and Hygiene, Homburg, Saarland University, Germany
| | - Patrick M Meyer Sauteur
- Division of Infectious Diseases and Hospital Epidemiology, University Children's Hospital Zurich, Zurich, Switzerland
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Ohayon S, Taib L, Verma NC, Iarossi M, Bhattacharya I, Marom B, Huttner D, Meller A. Full-Length Single Protein Molecules Tracking and Counting in Thin Silicon Channels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2314319. [PMID: 38461367 DOI: 10.1002/adma.202314319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/25/2024] [Indexed: 03/11/2024]
Abstract
Emerging single-molecule protein sensing techniques are ushering in a transformative era in biomedical research. Nevertheless, challenges persist in realizing ultra-fast full-length protein sensing, including loss of molecular integrity due to protein fragmentation, biases introduced by antibodies affinity, identification of proteoforms, and low throughputs. Here, a single-molecule method for parallel protein separation and tracking is introduced, yielding multi-dimensional molecular properties used for their identification. Proteins are tagged by chemo-selective dual amino-acid specific labels and are electrophoretically separated by their mass/charge in custom-designed thin silicon channel with subwavelength height. This approach allows analysis of thousands of individual proteins within a few minutes by tracking their motion during the migration. The power of the method is demonstrated by quantifying a cytokine panel for host-response discrimination between viral and bacterial infections. Moreover, it is shown that two clinically-relevant splice isoforms of Vascular endothelial growth factor (VEGF) can be accurately quantified from human serum samples. Being non-destructive and compatible with full-length intact proteins, this method opens up ways for antibody-free single-protein molecule quantification.
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Affiliation(s)
- Shilo Ohayon
- Department of Biomedical Engineering, Technion-IIT, Haifa, 3200003, Israel
| | - Liran Taib
- Department of Biomedical Engineering, Technion-IIT, Haifa, 3200003, Israel
| | | | - Marzia Iarossi
- Department of Biomedical Engineering, Technion-IIT, Haifa, 3200003, Israel
| | - Ivy Bhattacharya
- Department of Biomedical Engineering, Technion-IIT, Haifa, 3200003, Israel
| | - Barak Marom
- Department of Biomedical Engineering, Technion-IIT, Haifa, 3200003, Israel
| | - Diana Huttner
- Department of Biomedical Engineering, Technion-IIT, Haifa, 3200003, Israel
| | - Amit Meller
- Department of Biomedical Engineering, Technion-IIT, Haifa, 3200003, Israel
- Russell Berrie Nanotechnology Institute, Technion-IIT, Haifa, 3200003, Israel
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Bernardi L, Bossù G, Dal Canto G, Giannì G, Esposito S. Biomarkers for Serious Bacterial Infections in Febrile Children. Biomolecules 2024; 14:97. [PMID: 38254697 PMCID: PMC10813546 DOI: 10.3390/biom14010097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 12/29/2023] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Febrile infections in children are a common cause of presentation to the emergency department (ED). While viral infections are usually self-limiting, sometimes bacterial illnesses may lead to sepsis and severe complications. Inflammatory biomarkers such as C reactive protein (CRP) and procalcitonin are usually the first blood exams performed in the ED to differentiate bacterial and viral infections; nowadays, a better understanding of immunochemical pathways has led to the discovery of new and more specific biomarkers that could play a role in the emergency setting. The aim of this narrative review is to provide the most recent evidence on biomarkers and predictor models, combining them for serious bacterial infection (SBI) diagnosis in febrile children. Literature analysis shows that inflammatory response is a complex mechanism in which many biochemical and immunological factors contribute to the host response in SBI. CRP and procalcitonin still represent the most used biomarkers in the pediatric ED for the diagnosis of SBI. Their sensibility and sensitivity increase when combined, and for this reason, it is reasonable to take them both into consideration in the evaluation of febrile children. The potential of machine learning tools, which represent a real novelty in medical practice, in conjunction with routine clinical and biological information, may improve the accuracy of diagnosis and target therapeutic options in SBI. However, studies on this matter are not yet validated in younger populations, making their relevance in pediatric precision medicine still uncertain. More data from further research are needed to improve clinical practice and decision making using these new technologies.
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Affiliation(s)
| | | | | | | | - Susanna Esposito
- Pediatric Clinic, Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (L.B.); (G.B.); (G.D.C.); (G.G.)
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Fröhlich F, Gronwald B, Bay J, Simon A, Poryo M, Geisel J, Tegethoff SA, Last K, Rissland J, Smola S, Becker SL, Zemlin M, Meyer S, Papan C. Expression of TRAIL, IP-10, and CRP in children with suspected COVID-19 and real-life impact of a computational signature on clinical decision-making: a prospective cohort study. Infection 2023; 51:1349-1356. [PMID: 36757525 PMCID: PMC9910257 DOI: 10.1007/s15010-023-01993-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 01/28/2023] [Indexed: 02/10/2023]
Abstract
PURPOSE We evaluated the host-response marker score "BV" and its components TRAIL, IP-10, and CRP in SARS-CoV-2 positive children, and estimated the potential impact on clinical decision-making. METHODS We prospectively analyzed levels of TRAIL, IP-10, CRP, and the BV score, in children with suspected COVID-19. Classification of infectious etiology was performed by an expert panel. We used a 5-point-questionnaire to evaluate the intention to treat with antibiotics before and after receiving test results. RESULTS We screened 111 children, of whom 6 (5.4%) were positive for SARS-CoV-2. A total of 53 children were included for the exploratory analysis. Median age was 3.1 years (interquartile range [IQR] 1.3-4.3), and 54.7% (n = 29) were girls. A viral and a bacterial biomarker pattern was found in 27/53 (50.9%) and 15/53 (28.3%), respectively. BV scores differed between COVID-19, children with other viral infections, and children with bacterial infections (medians 29.5 vs. 9 vs. 66; p = 0.0006). Similarly, median TRAIL levels were different (65.5 vs. 110 vs. 78; p = 0.037). We found no differences in IP-10 levels (555 vs. 504 vs. 285; p = 0.22). We found a concordance between physicians' "unlikely intention to treat" children with a viral test result in most cases (n = 19/24, 79.2%). When physicians expressed a "likely intention to treat" (n = 15), BV test revealed 5 bacterial, viral, and equivocal scores each. Antibiotics were withheld in three cases (20%). Overall, 27/42 (64%) of pediatricians appraised the BV test positively, and considered it helpful in clinical practice. CONCLUSION Host-response based categorization of infectious diseases might help to overcome diagnostic uncertainty, support clinical decision-making and reduce unnecessary antibiotic treatment.
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Affiliation(s)
- Franziska Fröhlich
- Center for Infectious Diseases, Institute of Medical Microbiology and Hygiene, Saarland University, Kirrberger Strasse, Building 43, Homburg, Germany
- Department of General Pediatrics and Neonatology, Saarland University Hospital, Homburg, Germany
| | - Benjamin Gronwald
- Department of General Pediatrics and Neonatology, Saarland University Hospital, Homburg, Germany
| | - Johannes Bay
- Department of General Pediatrics and Neonatology, Saarland University Hospital, Homburg, Germany
| | - Arne Simon
- Department of Pediatric Hematology and Oncology, Saarland University Hospital, Homburg, Germany
| | - Martin Poryo
- Department of Pediatric Cardiology, Saarland University Hospital, Homburg, Germany
| | - Jürgen Geisel
- Department of Clinical Chemistry and Laboratory Medicine, Saarland University Medical Centre, Saarland University Hospital, Homburg, Germany
| | - Sina A Tegethoff
- Center for Infectious Diseases, Institute of Medical Microbiology and Hygiene, Saarland University, Kirrberger Strasse, Building 43, Homburg, Germany
| | - Katharina Last
- Center for Infectious Diseases, Institute of Medical Microbiology and Hygiene, Saarland University, Kirrberger Strasse, Building 43, Homburg, Germany
- Institute for Hygiene and Public Health, University Hospital Bonn, Bonn, Germany
| | - Jürgen Rissland
- Institute of Virology, Saarland University Medical Center, Homburg, Germany
| | - Sigrun Smola
- Institute of Virology, Saarland University Medical Center, Homburg, Germany
- Helmholtz Center for Infection Research (HZI), Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarland University Campus, Saarbrücken, Germany
| | - Sören L Becker
- Center for Infectious Diseases, Institute of Medical Microbiology and Hygiene, Saarland University, Kirrberger Strasse, Building 43, Homburg, Germany
| | - Michael Zemlin
- Department of General Pediatrics and Neonatology, Saarland University Hospital, Homburg, Germany
| | - Sascha Meyer
- Department of General Pediatrics and Neonatology, Saarland University Hospital, Homburg, Germany
| | - Cihan Papan
- Center for Infectious Diseases, Institute of Medical Microbiology and Hygiene, Saarland University, Kirrberger Strasse, Building 43, Homburg, Germany.
- Institute for Hygiene and Public Health, University Hospital Bonn, Bonn, Germany.
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