scholarly journals ЭТИОЛОГИЯ ВНЕБОЛЬНИЧНЫХ ПНЕВМОНИЙ В ПЕРИОД ЭПИДЕМИЧЕСКОГО РАСПРОСТРАНЕНИЯ COVID-19 В РОСТОВСКОЙ ОБЛАСТИ

2021 ◽  
Author(s):  
Анна Попова ◽  
Елена Ежлова ◽  
Юлия Демина ◽  
Алексей Носков ◽  
Евгений Ковалев ◽  
...  
Keyword(s):  
Bruker Daltonics

Введение. Пандемия COVID-19 в 2020 году внесла свой вклад в эпидемиологию респираторных инфекций. Важным является своевременное проведение дифференциальной диагностики COVID-19 и сезонных острых респираторных заболеваний. У пациентов с новой коронавирусной инфекцией возрастает риск развития госпитальной пневмонии. Актуальным является анализ особенностей циркуляции резистентных к антибактериальным химиопрепаратам штаммов возбудителей внутрибольничных инфекций. Цель – изучение этиологической структуры внебольничных пневмоний в период эпидемического распространения COVID-19, оценка рисков присоединения возбудителей пневмоний, связанных с оказанием медицинской помощи. Материалы и методы: Исследовали биологический материал от 446 пациентов с диагнозом «внебольничная пневмония», находившихся на амбулаторном лечении или в стационарах г. Ростова-на-Дону. Верификация респираторных вирусов, включая РНК SARS-CoV-2, а также M. pneumoniae, C. pneumoniae, L. pneumophila выполнена методом полимеразной цепной реакции в мазках носоглотки. Бактериологический анализ мокроты проводили с использованием дифференциально-диагностических сред, идентификацию выделенных патогенов осуществляли с помощью времяпролетной масс-спектрометрии на приборе Autoflex (Bruker Daltonics) c программным обеспечением BioTyper 3,0. Результаты и обсуждение. В период распространения новой коронавирусной инфекции в Ростовской области доля положительных результатов на SARS-CoV-2 среди пациентов с диагнозом внебольничная пневмония составляет 35,6 %. Частота микстинфекций вирусной природы достоверно не отличалась среди пациентов с лабораторно подтвержденным диагнозом COVID-19 и пациентов с отрицательным результатом на SARS-CoV-2 (25,9 % и 26,2 %, соответственно). В структуре микробиоты превалировали грибы рода Candida и плазмокоагулирущие стафилококки. Достоверно чаще от пациентов с лабораторно подтвержденным COVID-19 изолировали культуры неферментирующих грамотрицательных бактерий. У 51,6% пациентов, проходивших лечение в стационаре, отмечено вторичное коинфицирование, вероятно связанное с объектами внешней среды или с передачей инфекции от персонала. Передача ИСМП между пациентами не установлена.

Bruker Daltonics

2010 ◽  
pp. 199-208
Author(s):  
Soeren-Oliver Deininger
Keyword(s):  
Bruker Daltonics

scholarly journals Evaluation of Rapid Sepsityper® protocol and specific MBT-Sepsityper module (Bruker Daltonics) for the rapid diagnosis of bacteremia and fungemia by MALDI-TOF-MS

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Léa Ponderand ◽  
Patricia Pavese ◽  
Danièle Maubon ◽  
Emmanuelle Giraudon ◽  
Thomas Girard ◽  
...  
Keyword(s):  
Formic Acid ◽  
Bloodstream Infections ◽  
Rapid Identification ◽  
Rapid Diagnosis ◽  
Blood Cultures ◽  
Acid Extraction ◽  
Gram Negative Bacteria ◽  
Reliable Identification ◽  
Extraction Step ◽  
Bruker Daltonics

AbstractDuring bloodstream infections, rapid adaptation of empirical treatment according to the microorganism identified is essential to decrease mortality. The aim of the present study was to assess the microbiological performances of a new rapid version of the Sepsityper® kit (Bruker Daltonics) allowing identification of bacteria and yeast by MALDI-TOF mass spectrometry directly from positive blood cultures in 10 min and of the specific MBT-Sepsityper module for spectra analysis, designed to increase identification performance. Identification rates were determined prospectively on 350 bacterial and 29 fungal positive blood cultures, and compared to conventional diagnostic method. Our rapid diagnosis strategy (Rapid Sepsityper® protocol: one spot with and one without formic acid extraction step) combined to MBT-Sepsityper module provided 65.4%, 78.9% and 62% reliable identification to the species level of monomicrobial positive blood cultures growing respectively Gram-positive, Gram-negative bacteria or yeast. Importantly, identification rates of Gram-positive bacteria were higher in anaerobic than in aerobic bottles (77.8% vs 22.2%; p = 0.004), if formic acid extraction step was performed (60.8% vs 39.2%; p = 1.8e−6) and if specific MBT-Sepsityper module was used (76.2% vs 61.9%, p = 0.041) while no significant differences were observed for Gram-negative bacteria. For yeasts identification, formic acid extraction step improved rapid identification rate by 37.9% while the specific MBT-Sepsityper module increased overall performances by 38%, providing up to 89.7% reliable identification if associated with the standard Sepsityper® protocol. These performances, associated with a reduce turnaround time, may help to implement a rapid identification strategy of bloodstream infections in the routine workflow of microbiology laboratories.

scholarly journals Identificação por espectrometria de massa MALDI-TOF de Salmonella spp. e Escherichia coli isolados de carcaças bovinas

2017 ◽  
Vol 37 (12) ◽  
pp. 1373-1379
Author(s):  
Daniele Bier ◽  
Juliane F. Tutija ◽  
Taynara N. Pasquatti ◽  
Tayná L. Oliveira ◽  
Flábio R. Araújo ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Salmonella Spp ◽  
E Coli ◽  
Maldi Tof ◽  
Microbiological Examination ◽  
Maldi Biotyper ◽  
Bruker Daltonics

RESUMO: O objetivo deste trabalho foi introduzir a técnica de espectrometria de massa com fonte de ionização e dessorção a laser assistida por matriz e analisador de tempo-de-voo (MALDI-TOF) para incrementar o método tradicional microbiológico na detecção de Salmonella spp. e Escherichia coli em carcaças bovinas. Foram avaliadas 270 amostras de 90 carcaças de bovinos. Para isolamento de Salmonella spp. e E. coli, foram utilizadas, respectivamente, as metodologias descritas na ISO 6579:2002 e no Compendium of Methods for the Microbiological Examination of Foods. As análises por MALDI-TOF foram realizadas a partir de isolados cultivados em ágar nutriente ou em caldo triptona de soja, provenientes das amostras com características bioquímicas positivas (n=7), inconclusivas (n=4) e negativas (n=85) para Salmonella spp. e bioquímicas positivas (n=37) e negativas (n=85) para E. coli. Os perfis de massas foram adquiridos com o espectrômetro de massas MALDI-TOF Autoflex III SmartBeam e os espectros brutos foram processados usando o programa MALDI Biotyper (Bruker Daltonics). De acordo com a identificação preliminar, com base na morfologia das colônias e nas reações bioquímicas, sete isolados foram considerados positivos para Salmonella spp. Através do MALDI Biotyper, esses sete isolados foram classificados como pertencentes ao gênero Salmonella e, além disso, identificados como S. enterica. Quatro isolados que apresentaram características fenotípicas não usuais e resultados inconclusivos nos testes bioquímicos para Salmonella foram identificados como pertencentes aos gêneros Citrobacter e Proteus após análise por MALDI. Para E. coli, 37 amostras foram positivas pelos testes bioquímicos da espécie, o que foi confirmado por MALDI Biotyper. A metodologia MALDI-TOF permitiu a rápida confirmação da identidade de Salmonella spp. e E. coli, podendo ser utilizada para detecção desses microrganismos em isolados bacterianos de carcaças bovinas.

Applicability of 2D gel electrophoresis and liquid chromatography in proteomic analysis of urine using mass spectrometry MALDI-TOF

2013 ◽  
Vol 16 (3) ◽  
pp. 587-592 ◽  
Author(s):  
T. Banach ◽  
Ł. Adaszek ◽  
D. Wyłupek ◽  
M. Winiarczyk ◽  
S. Winiarczyk
Keyword(s):  
Liquid Chromatography ◽  
Body Fluid ◽  
Mass Spectra ◽  
Protein Composition ◽  
Human Medicine ◽  
Urine Samples ◽  
Maldi Tof ◽  
2D Gel ◽  
Bruker Daltonics ◽  
Prognostic And Predictive Markers

AbstractProteomics including the studies of the structure, function and dependences between proteins is more and more extensively applied in human medicine and veterinary medicine. The analysis of protein profiles of tissues and body fluid from healthy and ill individuals allows to identify diagnostic, prognostic and predictive markers in various pathological states in people and animals. This paper presents preparation of urine samples for analysis in the mass spectrometer MALDI-TOF (Ultraflextreme, Bruker, Bremen, Germany) by means of two methods: liquid chromatography based on the system Nano-LC (PROTEINER FC II, Bruker Daltonics, Bremen Germany). and two-direction electrophoresis 2DE (GE Healthcare, United Kingdom). Both methods enable separation of the mixture under consideration into individual fractions of high purity indispensable for obtaining readable mass spectra. The purpose of this paper is to determine applicability of these methods in analysis of protein composition of urine samples.

Use of MALDI-TOF MS (Bruker Daltonics) for identification of Mycobacterium species isolated directly from liquid medium

2021 ◽  
Vol 39 (5) ◽  
pp. 241-243
Author(s):  
Marta Fernández-Esgueva ◽  
Rebeca Fernández-Simon ◽  
María Luisa Monforte-Cirac ◽  
Ana Isabel López-Calleja ◽  
Blanca Fortuño ◽  
...  
Keyword(s):  
Liquid Medium ◽  
Mycobacterium Species ◽  
Maldi Tof Ms ◽  
Maldi Tof ◽  
Bruker Daltonics ◽  
Tof Ms

scholarly journals Identificación de aislamientos de Candida auris recuperados a través de la vigilancia por laboratorio en Colombia: un reto para el diagnóstico

Infectio ◽  
2020 ◽  
Vol 24 (4) ◽  
pp. 224
Author(s):  
Silvia K. Carvajal-Valencia ◽  
Diana Lizarazo ◽  
Carolina Duarte ◽  
Patricia Escandon
Keyword(s):  
Candida Auris ◽  
Candida Spp ◽  
Maldi Tof Ms ◽  
Maldi Tof ◽  
Vitek 2 ◽  
Bruker Daltonics ◽  
Tof Ms

Objetivo: Comparar los resultados obtenidos de diferentes sistemas de identificación de C. auris.Métodos: Análisis descriptivo con datos recopilados durante 2016-19 mediante la vigilancia nacional. Se evaluaron los resultados generados por los sistemas MicroScan, Phoenix BD, VITEK 2 y MALDI-TOF MS de instituciones hospitalarias de 843 aislamientos clínicos sospechosos de C. auris remitidos al INS y se compararon con los resultados generados de confirmación a través de MALDI- TOF MS (Bruker Daltonics) o PCR. Resultados: De los 843 aislamientos clínicos remitidos al INS, el 81,7% fueron confirmados como C. auris mediante MALDI- TOF MS o PCR en el INS y el resto, 18,3%, fueron identificados como otras especies de Candida spp. Las identificaciones correctas enviadas por los laboratorios representaron el 42,4%. MicroScan identificó C. auris principalmente como C. haemulonii, C. guilliermondii, C. albicans y C. famata; Phoenix BD, VITEK 2 y MALDI-TOF MS identificó C. auris como C. haemulonii. Discusión: Estudios señalan que C. auris exhibe una estrecha relación filogenética con C. haemulonii. Las identificaciones discrepantes pueden darse debido a que las bases de datos de los sistemas de diagnóstico son limitadas para este patógeno. Las deficiencias de los sistemas comerciales para la identificación de C. auris deben ser complementados con otros sistemas como MALDI-TOF MS o pruebas moleculares.

Rapid detection by MALDI-TOF MS of isolates from cystic fibrosis patients belonging to the epidemic clones Achromobacter xylosoxidans ST137 or Achromobacter ruhlandii DES.

2021 ◽  
Author(s):  
Thomas Garrigos ◽  
Manon Dollat ◽  
Arnaud Magallon ◽  
Angélique Chapuis ◽  
Véronique Varin ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
Achromobacter Xylosoxidans ◽  
Ionization Time ◽  
Maldi Tof Ms ◽  
Local Database ◽  
Maldi Tof ◽  
Flight Mass Spectrometry ◽  
Maldi Biotyper ◽  
Bruker Daltonics ◽  
Tof Ms

Objective: Achromobacter spp. are increasingly reported among cystic fibrosis patients. Genotyping requires time consuming methods such as Multilocus-Sequence-Typing or Pulsed-Field-Gel-Electrophoresis. Therefore, data on the prevalence of the multiresistant epidemic clones, especially A. xylosoxidans ST137 (AxST137) and the Danish Epidemic Strain A. ruhlandii (DES) are lacking. We recently developed and published a database for Achromobacter species identification by matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS, Bruker Daltonics). The aim of this study was to evaluate the ability of the MALDI-TOF MS to distinguish these multiresistant epidemic clones within Achromobacter species. Methods: All the spectra of A.xylosoxidans (n=1571) and A.ruhlandii (n=174) used to build the local database were analysed by ClinProTools™, MALDI Biotyper® PCA, MALDI Biotyper ® dendrogram and flexAnalysis™ softwares for biomarker peaks detection. Two-hundred-two isolates (including 48 isolates of AxST137 and 7 of DES) were tested. Results: Specific biomarker peaks were identified: absent peak at m/z 6651 for AxST137 isolates and present peak at m/z 9438 for DES isolates. All tested isolates were well typed by our local database and clustered within distinct groups (ST137 or non-ST137 and DES or non-DES) no matter the MALDI-TOF software or only by simple visual inspection of the spectra by any user. Conclusions: The use of MALDI-TOF MS allowed identifying isolates of A. xylosoxidans belonging to the AxST137 clone which spread in France and Belgium (the Belgian epidemic clone) and of A. ruhlandii belonging to the DES clone. This tool will help implementation of segregation measures to avoid inter-patient transmission of these resistant clones.

scholarly journals Gram-negative aerobic and microaerophilic microorganisms isolated from pathological processes and lesions of horses

2018 ◽  
Vol 63 (No. 2) ◽  
pp. 55-62
Author(s):  
J. Bzdil ◽  
O. Holy ◽  
J. Toporcak
Keyword(s):  
Antimicrobial Agents ◽  
Bacterial Species ◽  
Diffusion Method ◽  
Clinical Samples ◽  
Bacterial Strains ◽  
Culture Methods ◽  
Gram Negative ◽  
Surgical Interventions ◽  
Acinetobacter Spp ◽  
Bruker Daltonics

The pathogenicity of bacterial strains isolated from pathological processes and lesions of horses, strategies for their treatment and the choice of appropriate antimicrobials are frequently a challenging problem for private veterinarians who seek help in our laboratory. Therefore, the aim of this study was to map genera and species of Gram-negative aerobic and microaerophilic microorganisms isolated from pathological processes in horses and to identify the most effective antimicrobial agents for therapy based on antibiotic susceptibility. Between 2009 and 2014 a total of 449 clinical samples (n = 449) were examined; 229 (51%) of them were obtained from the respiratory tract, 121 (27%) from the skin, 40 (8.9%) from the digestive tract, 40 (8.9%) from the eyes, eight (1.8%) from the urinary system, six (1.3%) from the musculoskeletal system, four (0.9%) from the lymphatic system and one (0.2%) from milk. The examination was performed using conventional microbiological culture methods. The identification of isolates was confirmed using MALDI-TOF molecular phenotyping (Bruker Daltonics GmbH, Bremen, Germany). From the 276 Gram-negative isolates (prevalence of 61.5%), the most frequently detected strains were Enterobacter spp., Escherichia spp., Acinetobacter spp., Pseudomonas spp. and Actinobacillus spp. with prevalence rates of 7.6%, 6.7%, 6.7%, 6.0% and 5.8%. In addition, another 20 genera of microorganisms were detected. Susceptibility to antimicrobial agents was determined using the disc diffusion method. The most effective agents were gentamicin (94.1%), enrofloxacin (91.7%), colistin (87.0%), florfenicol (86.2%), neomycin (85.5%), streptomycin (82.4%) and tetracycline (78.5%). A good knowledge of the spectrum of bacterial species participating in pathological processes and lesions in horses and their antimicrobial susceptibility may be of great importance not only in treatment but also in deciding which prophylactic antibiotics to administer after surgical interventions.

scholarly journals Isolation and Identification of Lactic Acid Bacteria in Wine Production by MALDI-TOF MS Biotyper

2020 ◽  
Vol 23 (1) ◽  
pp. 21-24 ◽  
Author(s):  
Miroslava Kačániová ◽  
Simona Kunová ◽  
Jozef Sabo ◽  
Eva Ivanišová ◽  
Jana Žiarovská ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Leuconostoc Mesenteroides ◽  
Abundant Species ◽  
Isolation And Identification ◽  
Wine Production ◽  
Maldi Tof ◽  
The Family ◽  
Bruker Daltonics ◽  
Tof Ms

AbstractThe aim of this study was to identify lactic acid bacteria (LAB) in grapes, must and wines. A total amount of 90 samples including grape (n = 30), must (no = 30) and wine (no = 30) were collected from vineyards in Slovakia. LAB were used cultured on MRS agar with subsequent confirmation with MALDI-TOF mass spectrometry (Bruker Daltonics). Altogether, 904 isolates were identified. Members of the family Lactobacillaeceae were the most abundant in grape (60%), must (46%) and wine (51%). Lactobacillus, Lactococcus, Leuconostoc, Pediococcus and Weissella genera and 27 species of LAB were isolated from the examined samples. Leuconostoc mesenteroides spp. mesenteroides was the most abundant species in grape, must and wine.

Sign in / Sign up

Export Citation Format

Share Document