Bacteremia with ESBL-producing Enterobacterales is associated with IgG antibodies reacting with CTX-M-15 and/or CTX-M-27
| Autor: | Yu Ching Su, Oskar Ljungquist, Fredrik Resman, Emma Mattsson, Kristian Riesbeck, Thomas Sahlström, Johan Tham |
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| Rok vydání: | 2020 |
| Předmět: |
Microbiology (medical)
medicine.medical_specialty Bacteremia Antimicrobial resistance medicine.disease_cause Microbiology Gastroenterology beta-Lactamases law.invention Other systems of medicine Immune system Antibiotic resistance law Internal medicine Enterobacterales Escherichia coli Immunoglobulin medicine Humans Immune response Escherichia coli Infections Sweden biology Case-control study General Medicine bacterial infections and mycoses medicine.disease Antibodies Bacterial QR1-502 Anti-Bacterial Agents Infectious Diseases Case-Control Studies Immunoglobulin G biology.protein Recombinant DNA CTX Antibody RZ201-999 |
| Zdroj: | International Journal of Medical Microbiology, Vol 310, Iss 8, Pp 151468-(2020) |
| ISSN: | 1618-0607 |
| Popis: | Objectives The adaptive humoral immune response following clinical infection with extended spectrum beta-lactamase (ESBL)-producing Enterobacterales (EPE) has not been thoroughly investigated. The aim of this study was to investigate the presence of anti-CTX-M-15 and/or anti-CTX-M-27 IgG antibodies in bacteremia patients diagnosed with EPE compared to a control group consisting of patients suffering from bacteremia with third generation cephalosporin-susceptible Escherichia coli (3GCSE). Methods Patientswith EPE (n = 59) or 3GCSE (n = 42) bacteremia were recruited in this case control study in the Skane County (South of Sweden). Sera were collected 1–26 months after bacteremia. Enzyme-linked immunosorbent assay (ELISA) was used for detection of specific IgG antibodies directed against recombinant beta-lactamases CTX-M-15 and CTX-M-27. The beta-lactamase resistance genes of the corresponding EPE blood isolates were determined by DNA sequencing. Results The majority (n = 47; 80 %) of the 59 EPE blood isolates carried blaCTX-M-15 or blaCTX-M-27 genes. IgG antibodies reacting to the corresponding CTX-M enzyme was seen in 28 % (13/47) of patients suffering from EPE-bacteremia, while antibodies were detected in only 9.5 % (4/42) of patients with 3GCSE (p = 0.03). Patients with EPE had a statistically significantly higher median Charlson comorbidity index and prevalence of renal disease (p = 0.01), compared to the 3GCSE control group. Conclusion This study implies that EPE bacteremia can trigger production of IgG antibodies targeting ESBL. Further investigations are required to determine the functional role of anti-ESBL antibodies against EPE bacteremia. |
| Databáze: | OpenAIRE |
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