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Antibiotic sensitivity

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https://www.readbyqxmd.com/read/29777488/no-need-for-a-urine-culture-in-elderly-hospitalized-patients-with-a-negative-dipstick-test-result
#1
Zvi Shimoni, Vered Hermush, Joseph Glick, Paul Froom
To determine the clinical utility/disutility of canceling urine cultures in elderly patients with a negative dipstick. The cohort included consecutive patients aged ≥ 65 years hospitalized in internal medicine departments with an admission urinalysis and urine culture (January 1, 2014 to December 31, 2016). We calculated the sensitivity of the dipstick (either a trace leukocyte esterase or a positive nitrite test result) to detect patients with bacteriuria, and the decrease in urine cultures resulting from cancelation in patients with a negative dipstick...
May 18, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29777383/predictive-value-of-pct-and-il-6-for-bacterial-infection-in-children-with-cancer-and-febrile-neutropenia
#2
Hilde T van der Galiën, Erik A H Loeffen, Karin G E Miedema, Wim J E Tissing
PURPOSE: Only a third of children with cancer and febrile neutropenia (FN) have a proven bacterial infection; nevertheless, most children are hospitalized and treated with intravenous antibiotics. Several biomarkers have been proposed as predictive markers for bacterial infection in this population. We aimed to evaluate the role of interleukin-6 (IL-6) and procalcitonin (PCT) in diagnosing bacterial infection in children with cancer and FN. METHODS: The study population was derived from a prospective database (2006-2013, IL-8 study) comprising children with cancer who presented with FN...
May 19, 2018: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29776460/validation-of-the-betastar-%C3%A2-advanced-for-beta-lactams-test-kit-for-the-screening-of-bulk-tank-and-tanker-truck-milks-for-the-presence-of-beta-lactam-drug-residues
#3
Andrew Denhartigh, Lindsay Reynolds, Katherine Palmer, Frank Klein, Jennifer Rice, John J Rejman
A validation study was conducted for an immunochromatographic method (BetaStar® Advanced for Beta-lactams) for the detection of beta-lactam residues in raw, commingled bovine milk. The assay detected amoxicillin, ampicillin, cloxacillin, penicillin, cephapirin, and ceftiofur below the U.S. Food and Drug Administration tolerance levels but above the maximum sensitivity thresholds established by the National Conference on Interstate Milk Shipments. The results of internal and independent laboratory dose-response studies employing spiked samples were in agreement...
May 18, 2018: Journal of AOAC International
https://www.readbyqxmd.com/read/29776363/rapid-detection-of-carbapenemase-activity-of-enterobacteriaceae-isolated-from-positive-blood-cultures-by-maldi-tof-ms
#4
Jiajia Yu, Jingxian Liu, Yuanrui Li, Jing Yu, Weinan Zhu, Ying Liu, Lisong Shen
BACKGROUND: Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) has been proved to be a useful tool for identification of pathogens directly isolated from blood cultures in clinical microbiology laboratories. β-Lactam antibiotics are commonly used for treatment of bloodstream infections caused by Enterobacteriaceae strains, and carbapenem is the superlative class of β-lactam antibiotics. Since the carbapenem resistance rate of Enterobacteriaceae strains raised year by year, efficient detection of carbapenemase activity and timely delivery of carbapenem susceptibility reports of Enterobacteriaceae strains isolated from blood cultures is important for clinicians...
May 18, 2018: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/29775092/a-prospective-multi-centre-us-clinical-trial-to-determine-accuracy-of-febridx-point-of-care-testing-for-acute-upper-respiratory-infections-with-and-without-a-confirmed-fever
#5
Nathan I Shapiro, Wesley H Self, Jeffrey Rosen, Stephan C Sharp, Michael R Filbin, Peter C Hou, Amisha D Parekh, Michael C Kurz, Robert Sambursky
BACKGROUND: FebriDx is a 10-minute disposable point-of-care test designed to identify clinically significant systemic host immune responses and aid in the differentiation of bacterial and viral respiratory infection by simultaneously detecting C-reactive protein (CRP) and myxovirus resistance protein A (MxA) from a fingerstick blood sample. FebriDx diagnostic accuracy was evaluated in the emergency room and urgent care setting. METHODS: A prospective, multicentre, observational cohort study of acute upper respiratory tract infections (URIs), with and without a confirmed fever at the time of enrolment, was performed to evaluate the diagnostic accuracy of FebriDx to identify clinically significant bacterial infection with host response and acute pathogenic viral infection...
May 18, 2018: Annals of Medicine
https://www.readbyqxmd.com/read/29771932/a-multi-center-preclinical-study-of-gadoxetate-dce-mri-in-rats-as-a-biomarker-of-drug-induced-inhibition-of-liver-transporter-function
#6
Anastassia Karageorgis, Stephen C Lenhard, Brittany Yerby, Mikael F Forsgren, Serguei Liachenko, Edvin Johansson, Mark A Pilling, Richard A Peterson, Xi Yang, Dominic P Williams, Sharon E Ungersma, Ryan E Morgan, Kim L R Brouwer, Beat M Jucker, Paul D Hockings
Drug-induced liver injury (DILI) is a leading cause of acute liver failure and transplantation. DILI can be the result of impaired hepatobiliary transporters, with altered bile formation, flow, and subsequent cholestasis. We used gadoxetate dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), combined with pharmacokinetic modelling, to measure hepatobiliary transporter function in vivo in rats. The sensitivity and robustness of the method was tested by evaluating the effect of a clinical dose of the antibiotic rifampicin in four different preclinical imaging centers...
2018: PloS One
https://www.readbyqxmd.com/read/29769277/rapid-screening-of-urinary-tract-infection-and-discrimination-of-gram-positive-and-gram-negative-bacteria-by-automated-flow-cytometric-analysis-using-sysmex-uf-5000
#7
Seon Young Kim, Yumi Park, Hyunjin Kim, Jimyung Kim, Sun Hoe Koo, Gye Cheol Kwon
Rapid screening of urinary tract infection is important to determine antibiotic treatment and reduce unnecessary urine culture. We evaluated the performance of the new flow cytometry-based UF-5000 automated urine analyzer (Sysmex, Kobe, Japan). A total of 1,430 urine samples from 1,226 patients were analyzed and compared with urine cultures to which a Previ Isola (bioMérieux, Marcy l'Etoile, France) system was applied. In total, 878 of 1,430 urine cultures (61.4%) produced ≥ 103 CFU/mL bacterial growth [lsqb]309 with Gram-negative (GN) bacteria, 517 with Gram-positive (GP) bacteria, and 52 mixed cultures[rsqb], with 336 samples (23...
May 16, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29769151/real-time-automated-detection-of-ventilator-associated-events-avoiding-missed-detections-misclassifications-and-false-detections-due-to-human-error
#8
Erica S Shenoy, Eric S Rosenthal, Yu-Ping Shao, Siddharth Biswal, Manohar Ghanta, Erin E Ryan, Dolores Suslak, Nancy Swanson, Valdery Moura Junior, David C Hooper, M Brandon Westover
OBJECTIVETo validate a system to detect ventilator associated events (VAEs) autonomously and in real time.DESIGNRetrospective review of ventilated patients using a secure informatics platform to identify VAEs (ie, automated surveillance) compared to surveillance by infection control (IC) staff (ie, manual surveillance), including development and validation cohorts.SETTINGThe Massachusetts General Hospital, a tertiary-care academic health center, during January-March 2015 (development cohort) and January-March 2016 (validation cohort)...
May 17, 2018: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29769016/whole-genome-sequencing-data-of-1110-mycobacterium-tuberculosis-isolates-identifies-insertions-and-deletions-associated-with-drug-resistance
#9
Xi Zeng, Jamie Sui-Lam Kwok, Kevin Yi Yang, Kenneth Siu-Sing Leung, Mai Shi, Zhiyuan Yang, Wing-Cheong Yam, Stephen Kwok-Wing Tsui
BACKGROUND: Drug resistance in Mycobacterium tuberculosis (MTB) is one of the major challenges in tuberculosis (TB) treatment. However, known mutations cannot explain all of the cases of resistance and little research has focused on the relationship between insertions / deletions (indels) and drug resistance. RESULTS: Here, we retrieved whole genome sequencing data of 743 drug-resistant MTB strains and 367 pan-susceptible strains from TB patients from the public domain to identify novel genomic markers of drug resistance...
May 16, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29769010/evaluation-of-fosfomycin-activity-against-esbl-producing-enterobacteriaceae-isolated-from-iran
#10
Hossein Kazemian
BACKGROUND: Rising rates of antimicrobial resistance among Enterobacteriaceae limit the use of reliably active forms of available drugs. The aim of this study was to investigate the prevalence of fosfomycin (US6794490B2) resistance gene among ESBL producing isolates in Iran. METHOD: We tested 355 isolates of Enterobacteriacea collected from various clinical samples including urine, wounds, blood and other sources during June 2016 to July 2017. Antibiotic sensitivity and extended spectrum beta lactamase (ESBL) production were tested using agar dilution method according to the Clinical and Laboratory Standards Institute (CLSI) guidelines...
May 16, 2018: Recent Patents on Anti-infective Drug Discovery
https://www.readbyqxmd.com/read/29768382/transbronchial-drainage-using-endobronchial-ultrasonography-with-guide-sheath-for-lung-abscess-a-case-report
#11
Daizo Yaguchi, Motoshi Ichikawa, Noriko Inoue, Daisuke Kobayashi, Masato Shizu, Naoyuki Imai
RATIONALE: Lung abscess was previously treated surgically, but is now mainly treated with antibiotics and ideally with direct drainage, although postural drainage canalso be used. PATIENT CONCERNS: A chest abnormal shadow was detected in an 82-year-old man and he was referred to our department in November 2017. On chest computed tomography (CT), a low-density mass shadow was present in the left S8 segment. Lung abscess and lung cancer were considered as differential diagnoses, and treatment with sulbactam sodium/ampicillin sodium (SBT/ABPC) was first initiated for lung abscess...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29768131/a-new-scoring-system-to-predict-blood-stream-infections-in-patients-with-complicated-intra-abdominal-infections-experience-from-a-tertiary-referral-hospital-in-china
#12
Jinjian Huang, Jianan Ren, Luise Brakert, Jiao Jiao, Qinjie Liu, Gefei Wang, Xiuwen Wu, Steven W M Olde Damink
BACKGROUND: This purpose of this study was to investigate the effects of blood stream infections (BSIs) on the prognosis of patients with complicated intra-abdominal infections (IAIs) and to make predictions based on patients' characteristics on admission. PATIENTS AND METHODS: One hundred eighty-seven patients with complicated IAI in 2014 and 2015 were included in our retrospective analysis, except for those diagnosed with central line-associated blood stream infections (CLABSIs)...
May 2018: Surgical Infections
https://www.readbyqxmd.com/read/29767719/the-ups-and-downs-of-s-aureus-nasal-carriage
#13
Angela M Jarrett, Nicholas G Cogan
Staphylococcus aureus infections are a growing concern worldwide due to the increasing number of strains that exhibit antibiotic resistance. Recent studies have indicated that some percentage of people carry the bacteria in the nasal cavity and therefore are at a higher risk of subsequent, and more serious, infections in other parts of the body. However, individuals carrying the infection can be classified as only intermittent carriers versus persistent carriers, being able to eliminate the bacteria and later colonized again...
May 15, 2018: Mathematical Medicine and Biology: a Journal of the IMA
https://www.readbyqxmd.com/read/29767501/enhanced-antimicrobial-activity-and-structural-transitions-of-a-nanofibrillated-cellulose-nisin-bio-composite-suspension
#14
Ramon Weishaupt, Lukas Heuberger, Gilberto Siqueira, Beatrice Gutt, Tanja Zimmermann, Katharina Maniura-Weber, Stefan Salentinig, Greta Faccio
The occurrence of resistance to antibiotics has posed a high demand for novel strategies to fight bacterial infections. Antimicrobial peptides (AMPs) are a promising alternative to con-ventional antibiotics. However, their poor solubility in water and sensitivity to degradation has limited their application. Here we report the design of a smart, pH-responsive antimicro-bial nanobiocomposite material based on the AMP nisin and oxidized nanofibrillated cellulose (TONFC). Morphological transformations of the nano-scale structure of nisin functionalized TONFC fibrils were discovered at pH values between pH 5...
May 16, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29767074/occurrence-of-clostridium-perfringens-contamination-in-poultry-feed-ingredients-isolation-identification-and-its-antibiotic-sensitivity-pattern
#15
Shanmugasundaram Udhayavel, Gopalakrishnamurthy Thippichettypalayam Ramasamy, Vasudevan Gowthaman, Shanmugasamy Malmarugan, Kandasamy Senthilvel
This work has been undertaken to study the occurrence of Clostridium perfringens contamination in the poultry feed ingredients and find out its in-vitro antibiotic sensitivity pattern to various antimicrobial drugs. Two hundred and ninety-eight poultry feed ingredient samples received at Poultry Disease Diagnosis and Surveillance Laboratory, Namakkal, Tamil Nadu in South India were screened for the presence of C. perfringens . The organisms were isolated in Perfringens agar under anaerobic condition and subjected to standard biochemical tests for confirmation...
September 2017: Animal nutrition
https://www.readbyqxmd.com/read/29766324/a-general-lc-ms-ms-method-for-monitoring-potential-%C3%AE-lactam-contamination-in-drugs-and-drug-manufacturing-surfaces
#16
Chen Qiu, Hongbin Zhu, Connie Ruzicka, David Keire, Hongping Ye
Penicillins and some non-penicillin β-lactams may cause potentially life-threatening allergic reactions. Thus, possible cross contamination of β-lactams in food or drugs can put people at risk. Therefore, when there is a reasonable possibility that a non-penicillin product could be contaminated by penicillin, the drug products are tested for penicillin contamination. Here, a sensitive and rapid method for simultaneous determination of multiple β-lactam antibiotics using high performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed and validated...
May 15, 2018: AAPS Journal
https://www.readbyqxmd.com/read/29765621/biofilm-inhibition-and-pathogenicity-attenuation-in-bacteria-by-proteus-mirabilis
#17
Shichen Yu, Xiaoshan Zhu, Jin Zhou, Zhonghua Cai
Biofilms play an important role in the antibiotic resistance of encased bacteria, and biofilm formation is regulated by quorum sensing (QS). Inhibiting the QS system may, therefore, degrade the integrity of a biofilm and expose the bacterial pathogens within it to the deleterious effects of molecules such as antibiotics. Moreover, the use of QS inhibitors (QSIs) may provide a novel approach for treating bacterial infections of aquacultures. In the present study, the bacterium Proteus mirabilis was identified as a potential producer of QSIs...
April 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29765079/determination-of-flumequine-enantiomers-and-7-hydroxyflumequine-in-water-and-sediment-by-chiral-hplc-coupled-with-hybrid-quadrupole-time-of-flight-mass-spectrometer
#18
Moyong Xue, Yuchang Qin, Xu Gu, Junguo Li, Yunfeng Gao, Xiaowei Yang, Ting Yao, Zhen Zhao
A liquid chromatography-tandem mass spectrometric (LC-MS/MS) method for simultaneous enantiomeric analysis of flumequine and its metabolite 7-hydroxyflumequine in water and sediment had been developed based on the separation method. Sediment samples were extracted with ACN and EDTA-Mcllvaine buffer solution (40:60, v/v) then were enriched and cleaned-up by Cleanert PEP solid-phase extraction cartridges. The extract solvent, solid cartridges, mobile phase ratios, and chiral separation column were all optimized to reach high sensitivity and selectivity, good peak shape, and satisfactory resolution...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29764953/fighting-antibiotic-resistant-klebsiella-pneumoniae-with-sweet-immune-targets
#19
Roberto Adamo, Immaculada Margarit
Antibiotics and vaccines have greatly impacted human health in the last century by dramatically reducing the morbidity and mortality associated with infectious diseases. The recent challenge posed by the emergence of multidrug-resistant bacteria could possibly be addressed by novel immune prophylactic and therapeutic approaches. Among the newly threatening pathogens, Klebsiella pneumoniae is particularly worrisome in the nosocomial setting, and its surface polysaccharides are regarded as promising antigen candidates...
May 15, 2018: MBio
https://www.readbyqxmd.com/read/29764833/early-prosthetic-valve-endocarditis-after-transcatheter-aortic-valve-implantation-using-st-jude-medical-portico-valve
#20
Abdalla Ibrahim, Aneeq Ahmed, Thomas Kiernan, Samer Arnous
An 87-year-old woman presented to the emergency department with a 2-week history of progressively worsening shortness of breath, fever and generalised myalgia. She underwent a transcatheter Portico aortic valve implantation for severe symptomatic aortic stenosis 3 months prior to this presentation. Examination revealed a temperature of 40°C and a systolic murmur in the aortic area. Inflammatory markers were elevated, and blood cultures were positive for methicillin-sensitive Staphylococcus aureus A possible diagnosis of infective endocarditis was made as one major and one minor criterion in the modified Duke criteria were fulfilled...
May 14, 2018: BMJ Case Reports
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