Rapid Identification of Mycoplasma bovis Strains from Bovine Bronchoalveolar Lavage Fluid with Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry after Enrichment Procedure Clinical Veterinary Microbiology

Mycoplasma bovis is a leading cause of pneumonia in modern calf rearing. Fast identification is essential to ensure appropriate antimicrobial therapy. Therefore, the objective of this study was to develop a protocol to identify M. bovis from bronchoalveolar lavage fluid (BALf) with matrix-assisted laser desorption ionization–time of flight mass spectrometry MALDI-TOF MS and to determine the diagnostic accuracy in comparison with other techniques. BALf was obtained from 104 cattle, and the presence of M. bovis was determined in the following three ways: (i) rapid identification of M. bovis with MALDI-TOF MS (RIMM) (BALf was enriched and after 24, 48, and 72 h of incubation and was analyzed using MALDI-TOF MS), (ii) triplex real-time PCR for M. bovis, Mycoplasma bovirhinis, and Mycoplasma dispar, and (iii) 10-day incubation on selective-indicative agar. The diagnostic accuracy of the three tests was determined with Bayesian latent class modeling (BLCM). After 24 h of enrichment, M. bovis was identified with MALDI-TOF MS in 3 out of 104 BALf samples. After 48 and 72 h of enrichment, 32/104 and 38/100 samples, respectively, were M. bovis positive. Lipase-positive Mycoplasma-like colonies were seen in 28 of 104 samples. Real-time PCR resulted in 28/104 positive and 12/104 doubtful results for M. bovis. The BLCM showed a sensitivity (Se) and specificity (Sp) of 86.6% (95% credible interval [CI], 69.4% to 97.6%) and 86.4% (CI, 76.1 to 93.8) for RIMM. For real-time PCR, Se was ...
Source: Journal of Clinical Microbiology - Category: Microbiology Authors: Tags: Clinical Veterinary Microbiology Source Type: research

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Implementation of antibiotic stewardship is difficult in patients with sepsis because of severity of disease. We evaluated the impact of glycopeptide discontinuation (GD) in patients with culture negative severe sepsis or septic shock who received glycopeptides as initial empiric antibiotic therapy at admission. We conducted a single center retrospective cohort study between January 2010 and March 2018. GD was defined as discontinuation of initial empiric glycopeptides on availability of culture results, revealing the absence of identified pathogens. In 92 included patients, the leading causes of sepsis were pneumonia (34....
Source: Current Awareness Service for Health (CASH) - Category: Consumer Health News Source Type: news
CONCLUSION: International guidelines do not include the universal screening for bacterial co-infection. Radiological pattern of COVID-19 can be indistinguishable from that of pneumococcus pneumonia and frequency of co-infection is not well stablished, therefore clinicians should be aware of the possible SARS-CoV-2-pneumococcus association to avoid misdiagnosis and delay antibiotic therapy. PMID: 32591180 [PubMed - as supplied by publisher]
Source: Medicina Clinica - Category: General Medicine Tags: Med Clin (Barc) Source Type: research
We present a case of severe CAP caused by PVL-positive MRSA with ensuing septic shock. Patient concerns: A 68-year-old male with no concerning medical history had developed a fever that reached 39.0°C, a productive cough that was sustained for 5 days, and hypodynamia. He was treated with azithromycin and alexipyretic in a nearby clinic for 2 days in which the symptoms were alleviated. However, 1 day later, the symptoms worsened, and he was taken to a local Chinese medicine hospital for traditional medicine treatment. However, his clinical condition deteriorated rapidly, and he then developed dyspnea and hemoptysis. ...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research
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Source: Infectious Diseases in Clinical Practice - Category: Infectious Diseases Tags: Clinical Guidelines Source Type: research
The rapid identification of pathogenic bacteria is important for determining an appropriate antimicrobial therapy for pneumonia, but traditional bacterial culture is time-consuming and labourious. The aim of t...
Source: BMC Microbiology - Category: Microbiology Authors: Tags: Research article Source Type: research
PMID: 32591142 [PubMed - as supplied by publisher]
Source: Archivos de Bronconeumologia - Category: Respiratory Medicine Authors: Tags: Arch Bronconeumol Source Type: research
ConclusionStandard treatment guidelines did not consider local AMR recommendations for empirically prescribing antibacterials for common infectious syndromes. The AMR reviews published in the country produced poor methodologic quality evidence for clinical applications. This highlights the need to improve the methodologic quality to provide the best available evidence for clinical decision-making and curb the ongoing AMR in Ethiopia.Trial registrationRetrospectively registered (15/07/2020).
Source: Infectious Diseases and Therapy - Category: Infectious Diseases Source Type: research
Early appropriate antibiotic therapy reduces morbidity and mortality of severe pneumonia. However, the emergence of bacterial resistance requires the earliest use of antibiotics with the narrowest possible spe...
Source: Critical Care - Category: Intensive Care Authors: Tags: Research Source Type: research
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Source: Journal of the Royal College of Physicians of Edinburgh - Category: General Medicine Tags: J R Coll Physicians Edinb Source Type: research
Adam P. Roberts Pneumonia is the sixth largest cause of death in the UK. It is usually caused by Streptococcus pneumoniae, which healthy individuals can carry in their nose without symptoms of disease. Antimicrobial resistance further increases mortality and morbidity associated with pneumococcal infection, although few studies have analysed resistance in naturally circulating pneumococcal isolates in adult populations. Here, we report on the resistome and associated mobile genetic elements within circulating pneumococcus isolated from adult volunteers enrolled in the experimental human pneumococcal colonisation (EHPC...
Source: Genes - Category: Genetics & Stem Cells Authors: Tags: Communication Source Type: research
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