The largest database of trusted experimental protocols

60 protocols using phoenix system

1

Antibiotic Susceptibility of Proteus spp. Isolates

Check if the same lab product or an alternative is used in the 5 most similar protocols
Proteus spp. strains were isolated from patients of the Antoni Jurasz University Hospital No 1 in Bydgoszcz, Poland. The examination included only strains obtained from urine samples collected using bladder catheters. Strains were identified during microbiological investigation at the Department of Microbiology.
The susceptibility of Proteus spp. strains was examined using BD Phoenix™ system (Becton Dickinson) and interpreted according to EUCAST recommendation [35 ]. Four randomly chosen clinical strain (named S1−S4), susceptible to the examined antimicrobials and one reference strain (R) purchased from American Type Culture Collection (ATCC® 29906™) were included into the study (Table 3). Strains identification was confirmed using MALDI-TOF MS technique (Microflex, Bruker). Investigation strains were stored in a Brain-Heart Infusion (BHI, Becton Dickinson) with 20.0% glycerol (Avantor) at −70 °C.
+ Open protocol
+ Expand
2

Ventilator-Associated Pneumonia Bacteremia Study

Check if the same lab product or an alternative is used in the 5 most similar protocols
The following clinical information was collected for each patient: demographic characteristics, VAP diagnosis, reasons for mechanical ventilation, laboratory data, and chest radiograph reports. Bacteremic VAP was diagnosed when blood and respiratory samples yielded the same microorganism and other sources of infection that could account for the bacteremia were absent. Furthermore, blood and respiratory cultures were performed within 48 h.
Outcome was defined as in-hospital mortality measured 30 days after the onset of VAP. Trauma was defined as the presence of injury in more than one body area or system or the presence of major cranial trauma alone. Chronic lung diseases included bronchiectasis, chronic obstructive pulmonary disease. The initial laboratory value was defined as that measured within 48 h of the onset of VAP.
The BD Phoenix system (Becton Dickinson, USA) was used to confirm bacterial identification. Antibiotic susceptibility was tested with the disk diffusion method, and interpretations were made according to the guidelines of the Clinical and Laboratory Standards Institute [22 ]. All of the K. pneumoniae isolates were screened and confirmed by a double-disk synergy test for produced extended-spectrum β-lactamase (ESBL).
+ Open protocol
+ Expand
3

Standard Urine Culture and AST Protocol

Check if the same lab product or an alternative is used in the 5 most similar protocols
Clinical microbiology reference methods, which provide a reference ground truth for the LVM-AST results, were performed by the Mayo Clinic Arizona Microbiology Laboratory. Each urine sample was collected from a symptomatic patient at the Mayo Clinic, which was inoculated onto at least two different standard media, incubated for 18-24 h, and assessed for growth, quantity, and morphology of bacterial cells. If a particular species exceeded 105 CFU/mL, then it was sub-cultured to ensure purity. Bacterial identification was primarily determined by MALDI-TOF mass spectrometry (Bruker Daltonics, Billerica, MA). The culturing and identification processes usually require 48-72 h from sample receipt to result reporting. Susceptibility testing in the Mayo Clinic Arizona Laboratory was performed using the automated BD Phoenix™ system (Becton Dickinson, Franklin Lakes, NJ), according to manufacturer’s instructions. The system uses broth microdilution to assess bacterial growth in the presence of different antibiotics and antibiotic concentrations and reports a minimum inhibitory concentration (MIC).
+ Open protocol
+ Expand
4

Linezolid-Resistant Staphylococcus Epidermidis in Pediatrics

Check if the same lab product or an alternative is used in the 5 most similar protocols
The study included 11 LRSE clinical isolates recovered between 2015 and 2017 from the UCH in Krakow from 10 pediatric patients aged from 23 days to 11 months. Nine isolates were recovered from blood (including two isolates from the same patient), one from a throat and one from a central venous catheter. All isolates were recovered after at least 48 h after admission to the unit. Linezolid resistance was detected in the hospital laboratory based on disc-diffusion method (linezolid (30 μg)). The preliminary identification of isolates was performed with BD Phoenix™ system (Becton Dickinson, Franklin Lakes, NJ, USA).
+ Open protocol
+ Expand
5

Antimicrobial Susceptibility of E. coli Isolates

Check if the same lab product or an alternative is used in the 5 most similar protocols
The Kp VA585-22 isolate, E. coli K12-GmR and two E. coli K12 transconjugant clones (GmR-MemR) were studied by epsilometry (E-test, Biomerieux) and broth microdilution using BD Phoenix™ System (Becton Dickinson, USA), according to M100 Performance Standards for Antimicrobial Susceptibility Testing, 33rd edition [33 ].
+ Open protocol
+ Expand
6

Antibiotic Resistance Profiling of Listeria spp.

Check if the same lab product or an alternative is used in the 5 most similar protocols
For the phenotypic characterization, the isolates were incubated at 37 °C for 24 ± 2 h on blood agar (Oxoid Deutschland GmbH). For the AMR testing, the BD Phoenix System (Becton Dickinson, Franklin Lakes, NJ, USA) with the PMIC/ID 88 panel was used, according to the manufacturer’s guidance for Gram-positive bacteria. The phenotypic resistance of 22 Listeria spp. isolates against benzylpenicillin, erythromycin, trimethoprim-sulfamethoxazole, gentamicin, tetracycline, fosfomycin, ciprofloxacin, and moxifloxacin was tested according to the European Committee on Antimicrobial Susceptibility Testing (EUCAST). The EUCAST breakpoints for L. monocytogenes were used for erythromycin and trimethoprim–sulfamethoxazole [39 ], whereas, for the other tested antibiotics (i.e., benzylpenicillin, gentamicin, tetracycline, fosfomycin, ciprofloxacin, and moxifloxacin), the EUCAST Staphylococcus spp. breakpoints were applied as a substitute, as described in previous studies [40 (link),41 (link)].
+ Open protocol
+ Expand
7

ESBL detection and antimicrobial susceptibility

Check if the same lab product or an alternative is used in the 5 most similar protocols
The microbiology laboratory of each center provided patient records. To obtain patient addresses at the townland level, each patient record was reviewed. ESBL detection was done by automated method. Antimicrobial susceptibility testing and phenotypic confirmation of ESBL were performed according Clinical Laboratory Standards Institute (CLSI) recommendations. In the SJUH Vitek 2 system (bioMérieux SA) was used. In LCCL the BD Phoenix system (Becton and Dickinson) was used until 2015, from 2015 onwards the Vitek 2 system was used. Minimum inhibitory concentration (MIC) profile was used as a screening test for ESBL. Screen positive isolates (MIC of cefotaxime or ceftazidime of ≥1 mg/L, an ESBL or inducible cephalosporinase warning by the automated system) were subjected to confirmation tests using double disc synergy method for ESBL. All isolates showed sensitivity to carbapenems according to the cutoff points for each year by the CLSI.
+ Open protocol
+ Expand
8

Automated Antimicrobial Susceptibility Testing

Check if the same lab product or an alternative is used in the 5 most similar protocols
Antimicrobial susceptibility was assessed by broth microdilution using the automated BD Phoenix system (Becton, Dickinson, France) according to the manufacturers’ recommendations. In brief, colonies were suspended in BD Phoenix ID broth to obtain approximately a 0.5 McFarland (1.5 × 108-CFU/ml) suspension. Broth was then placed on a BD Phoenix AP system that automatically adjusts the optical density and further dilutes the bacterial suspension in BD Phoenix AST broth (a cation-adjusted formulation of Mueller-Hinton broth containing 0.01% Tween 80) to obtain a final bacterial concentration in the AST broth of approximately 5 × 105 CFU/ml. A redox indicator was then added to the AST broth. Inoculated AST broth was then poured into a BD Phoenix NMIC-417 panel, loaded into the BD Phoenix M50 instrument, and incubated at 35°C ± 1°C. Results were interpreted by the BD EpiCenter system according to CASFM-EUCAST (European Committee on Antimicrobial Susceptibility Testing) 2019 V1 breakpoints.
+ Open protocol
+ Expand
9

Antimicrobial Resistance Testing of Bacterial Isolates

Check if the same lab product or an alternative is used in the 5 most similar protocols
Bacterial isolates were recovered from frozen storage at −80°C and serially passaged twice on 5% sheep’s blood agar (Remel, Lenexa, KS) prior to experimental testing. Organisms were defined as multidrug-resistant if they exhibited resistance to at least three of the major antibiotic classes (aminoglycosides, β-lactams, carbapenems, and fluoroquinolones) or produced either extended spectrum β-lactamases or K. pneumoniae carbapenemases [33 ]. Antimicrobial susceptibility testing was performed using the BD Phoenix™ system (Becton-Dickinson, Franklin Lakes, NJ) per the manufacturer’s instructions. Susceptibility to antimicrobials was interpreted according to the criteria of the Clinical Laboratory and Standards Institute [34 ].
+ Open protocol
+ Expand
10

Antibiotic Resistance Profiling of Clinical Isolates

Check if the same lab product or an alternative is used in the 5 most similar protocols
Escherichia coli (E. coli, ATCC 11229), Enterococcus faecalis (E. faecalis, ATCC 29212), Klebsiella pneumoniae (K. pneumoniae, ATCC 10031), and Staphylococcus aureus (S. aureus, ATCC 6538) strains were obtained from American Type Culture Collection (ATCC, Manassas, VA, USA). The multi-drug resistant (MDR) bacteria and multi-sensitive (MS) bacteria were collected from clinical isolates from the Unit of Virology and Microbiology of University Hospital “Luigi Vanvitelli”, Naples, Italy. Bacterial identification was carried out via MALDI-TOF MS (Bruker Daltonics, Bremen, Germany), and the antibiotic resistance patterns were evaluated by the BD Phoenix system (Becton Dickinson, Franklin Lakes, NJ, USA). Resistance profiles for ATCC and clinical isolate tested strains (Table 1 and Table 2) are reported in our previous work [20 (link)].
+ Open protocol
+ Expand

About PubCompare

Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.

We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.

However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.

Ready to get started?

Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required

Sign up now

Revolutionizing how scientists
search and build protocols!