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https://www.readbyqxmd.com/read/28224093/pediatric-asthma-severity-score-is-associated-with-critical-care-interventions
#1
Danielle K Maue, Nadia Krupp, Courtney M Rowan
AIM: To determine if a standardized asthma severity scoring system (PASS) was associated with the time spent on continuous albuterol and length of stay in the pediatric intensive care unit (PICU). METHODS: This is a single center, retrospective chart review study at a major children's hospital in an urban location. To qualify for this study, participants must have been admitted to the PICU with a diagnosis of status asthmaticus. There were a total of 188 participants between the ages of two and nineteen, excluding patients receiving antibiotics for pneumonia...
February 8, 2017: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/28223861/biogenic-nanoparticles-bearing-antibacterial-activity-and-their-synergistic-effect-with-broad-spectrum-antibiotics-emerging-strategy-to-combat-drug-resistant-pathogens
#2
Syed Baker, Azmath Pasha, Sreedharamurthy Satish
The present study emphasizes on synthesis of bimetallic silver-gold nanoparticles from cell free supernatant of Pseudomonas veronii strain AS41G inhabiting Annona squamosa L. The synthesized nanoparticles were characterized using hyphenated techniques with UV-Visible spectra ascertained absorbance peak between 400 and 800 nm. Possible interaction of biomolecules in mediating and stabilization of nanoparticles was depicted with Fourier transform infrared spectroscopy (FTIR). X-ray diffraction (XRD) displayed Bragg's peak conferring the 1 0 0, 1 1 1, 2 0 0, and 2 2 0 facets of the face centered cubic symmetry of nanoparticles suggesting that these nanoparticles were crystalline in nature...
January 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28222811/recurring-septic-shock-in-a-patient-with-blunt-abdominal-and-pelvic-trauma-how-mandatory-is-source-control-surgery-a-case-report
#3
Antonella Frattari, Giustino Parruti, Rocco Erasmo, Luigi Guerra, Ennio Polilli, Rosamaria Zocaro, Giuliano Iervese, Paolo Fazii, Tullio Spina
BACKGROUND: In critically ill patients with colonization/infection of multidrug-resistant organisms, source control surgery is one of the major determinants of clinical success. In more complex cases, the use of different tools for sepsis management may allow survival until complete source control. CASE PRESENTATION: A 42-year-old white man presented with traumatic hemorrhagic shock. Unstable pelvic fractures led to emergency stabilization surgery. Fever ensued with diarrhea, followed by septic shock...
February 22, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28221753/structure-activity-relationships-of-the-competence-stimulating-peptides-csps-in-streptococcus-pneumoniae-reveal-motifs-critical-for-intra-group-and-cross-group-comd-receptor-activation
#4
Yifang Yang, Bimal Koirala, Lucia A Sanchez, Naiya R Phillips, Sally R Hamry, Yftah Tal-Gan
Streptococcus pneumoniae is a highly recombinogenic human pathogen that utilizes the competence stimulating peptide (CSP)-based quorum sensing (QS) circuitry to acquire antibiotic resistance genes from the environment and initiate its attack on the human host. Modulation of QS in this bacterium, either inhibition or activation, can therefore be used to attenuate S. pneumoniae infectivity and slow down pneumococcal resistance development. In this study we set to determine the molecular mechanism that drives CSP:receptor binding and identify CSP-based QS modulators with distinct activity profiles...
February 21, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28219824/characterisation-of-the-first-kpc-2-producing-klebsiella-pneumoniae-st340-from-peru
#5
Gertrudis Horna, Jorge Velasquez, Nathaly Fernández, Jesus Tamariz, Joaquim Ruiz
OBJECTIVES: The aim of this study was to characterise a KPC-carrying Klebsiella pneumoniae isolate from a Peruvian hospital setting. METHODS: The identity of the isolate was confirmed by amplification and sequencing of the 16S rRNA gene, and the antibiotic resistance profile was determined by disk diffusion and automated METHODS: The sequence type (ST) and phylogenetic group were established by PCR. The presence of different β-lactamase genes was determined, including blaMBL, blaKPC, blaCTX-M, blaSHV, blaOXA-1-like, blaOXA-2-like, blaOXA-5-like, blaOXA-48-like and blaTEM and up to six different plasmid-encoded AmpC genes as well as class 1 integrons...
February 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28219823/proteomic-analysis-of-a-carbapenem-resistant-klebsiella-pneumoniae-strain-in-response-to-meropenem-stress
#6
Arbab Khan, Divakar Sharma, Mohammad Faheem, Deepa Bisht, Asad U Khan
OBJECTIVES: Antibiotic resistance has become a major problem in treating bacterial infections. The aim of this study was to elucidate the effects of meropenem on a blaKPC-2-harbouring multidrug-resistant clinical strain of Klebsiella pneumoniae through a proteomics approach in order to attain a deeper understanding of bacterial resistance strategies. METHODS: Analysis was performed by two-dimensional gel electrophoresis of whole-cell extracts of bacteria exposed to a sublethal concentration of meropenem compared with the untreated control...
February 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28216097/epidemiology-and-resistance-characteristics-of-pseudomonas-aeruginosa-isolates-from-the-respiratory-department-of-a-hospital-in-china
#7
Wei Feng, Fengjun Sun, Qian Wang, Wei Xiong, Xuewen Qiu, Xiaotian Dai, Peiyuan Xia
OBJECTIVES: Pseudomonas aeruginosa is one of the most common pathogens causing nosocomial pneumonia. The aim of this study was to investigate the epidemiology and resistance of P. aeruginosa isolated from hospitalised patients in the respiratory department of a hospital in China. METHODS: Clinical isolates were collected from the respiratory department of Southwest Hospital (Chongqing, China) from January 2013 to December 2014. Patients' social and demographic information was obtained from the hospital's information system...
February 12, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28210638/an-unusual-suspect-causing-hypoxemic-respiratory-failure
#8
Masooma Aqeel, Bjorn Batdorf, Horatiu Olteanu, Jayshil J Patel
Introduction: Antisynthetase syndrome (ASS) is characterized by the presence of anti-Jo-1 antibodies in conjunction with clinical findings of fever, polymyositis-dermatomyositis, and interstitial lung disease (ILD). Inflammatory myopathies carry a high risk of malignancy, but this association is less well outlined in ASS. We present the case of a patient with ASS who developed non-Hodgkin's lymphoma with acute hypoxemic respiratory failure. Case Presentation: A 44-year-old female with ASS presented with acute hypoxemic respiratory failure...
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28210248/coexistence-of-blaoxa-48-and-truncated-blandm-1-on-different-plasmids-in-a-klebsiella-pneumoniae-isolate-in-china
#9
Lianyan Xie, Yi Dou, Kaixin Zhou, Yue Chen, Lizhong Han, Xiaokui Guo, Jingyong Sun
Objectives: To describe the genetic environment, transferability, and antibiotic susceptibility of one clinical Klebsiella pneumoniae isolate harboring both blaOXA-48 and blaNDM-1 on different plasmids from a Chinese hospital. Methods: The isolate was subjected to antimicrobial susceptibility testing and multilocus sequence typing using Etest and PCR. The plasmids harboring blaOXA-48 and blaNDM-1 were analyzed through conjugation experiments, S1-nuclease pulsed-field gel electrophoresis, and hybridization with specific probes...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28208889/management-of-pneumonia-and-blood-stream-infections-with-new-antibiotic-adjuvant-entity-ceftriaxone-sulbactam-disodium-edetate-a-novel-way-to-spare-carbapenems
#10
Mohammad Shameem, Mohammad Amin Mir
INTRODUCTION: Nosocomial infections have been considered as a major health problem causing incremental morbidity, mortality and costs of therapy. AIM: This retrospective study was initiated with aim to analyse the comparative efficacy of a novel Antibiotic Adjuvant Entity (AAE), a combination of ceftriaxone + sulbactam + disodium edetate and meropenem in combination with colistin, for the management of Multi Drug Resistant (MDR) nosocomial Gram-negative bacterial infections...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208857/emergence-of-hospital-acquired-carbapenem-resistant-non-fermenters-in-teaching-institute
#11
Hariom Sharan, Neeraj Katare, Aparna Pandey, Ganesh Shivmurti Bhatambare, Trupti Bajpai
INTRODUCTION: Non-Fermenting Gram Negative Bacilli (NFGNB) are emerging now-a-days because of their tendency to colonize various surfaces and inherent resistance to commonly used disinfectants. They are responsible for multi-drug resistant hospital acquired infections. Detection of carbapenem resistance mechanisms is essential for treatment and infection control purpose as can spread to other organisms causing hospital outbreaks. AIM: To characterize non-fermenters from various clinical samples and to detect different carbapenem resistance mechanisms in meropenem resistant isolates...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207813/interacting-networks-of-resistance-virulence-and-core-machinery-genes-identified-by-genome-wide-epistasis-analysis
#12
Marcin J Skwark, Nicholas J Croucher, Santeri Puranen, Claire Chewapreecha, Maiju Pesonen, Ying Ying Xu, Paul Turner, Simon R Harris, Stephen B Beres, James M Musser, Julian Parkhill, Stephen D Bentley, Erik Aurell, Jukka Corander
Recent advances in the scale and diversity of population genomic datasets for bacteria now provide the potential for genome-wide patterns of co-evolution to be studied at the resolution of individual bases. Here we describe a new statistical method, genomeDCA, which uses recent advances in computational structural biology to identify the polymorphic loci under the strongest co-evolutionary pressures. We apply genomeDCA to two large population data sets representing the major human pathogens Streptococcus pneumoniae (pneumococcus) and Streptococcus pyogenes (group A Streptococcus)...
February 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28207768/prevalence-of-mdr-pathogens-of-bacterial-meningitis-in-egypt-and-new-synergistic-antibiotic-combinations
#13
Mona M Abdelkader, Khaled M Aboshanab, Marwa A El-Ashry, Mohammad M Aboulwafa
The aim of this study was identifying bacterial pathogens involved in meningitis, studying their antibiotic resistance profiles, investigating the antibiotic resistance genes as well as evaluating the use of various antibiotic combinations. Antibiotic susceptibility tests were evaluated according to CLSI guidelines. Antibiotic combinations were evaluated by calculating the Fractional Inhibitory Concentration (FIC) index. A total of 71 bacterial isolates were recovered from 68 culture positive CSF specimens...
2017: PloS One
https://www.readbyqxmd.com/read/28205635/deciphering-the-distance-to-antibiotic-resistance-for-the-pneumococcus-using-genome-sequencing-data
#14
Fredrick M Mobegi, Amelieke J H Cremers, Marien I de Jonge, Stephen D Bentley, Sacha A F T van Hijum, Aldert Zomer
Advances in genome sequencing technologies and genome-wide association studies (GWAS) have provided unprecedented insights into the molecular basis of microbial phenotypes and enabled the identification of the underlying genetic variants in real populations. However, utilization of genome sequencing in clinical phenotyping of bacteria is challenging due to the lack of reliable and accurate approaches. Here, we report a method for predicting microbial resistance patterns using genome sequencing data. We analyzed whole genome sequences of 1,680 Streptococcus pneumoniae isolates from four independent populations using GWAS and identified probable hotspots of genetic variation which correlate with phenotypes of resistance to essential classes of antibiotics...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205429/-pneumococcal-arthritis-in-paediatric-population
#15
G Barbeito-Castiñeiras, M Guinda-Giménez, O Cores-Calvo, M Hernández-Blanco, F Pardo-Sánchez
OBJECTIVE: Cases of septic arthritis in paediatric population by Streptococcus pneumoniae in the Health Area of Santiago de Compostela (Spain) were reviewed. METHODS: A retrospective study from January 2005 to March 2014 was conducted for all S. pneumoniae isolates obtained from joint fluids in children. RESULTS: From the 7,416 joint fluids received in the Microbiology Department, 77 belonged to paediatric patients, and of these, only 8 had positive culture...
February 16, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/28203096/burden-of-methicillin-resistant-staphylococcus-aureus-pneumonia-among-hospitalized-patients-in-lebanon-and-saudi-arabia
#16
Abdulhakeem O Althaqafi, Madonna J Matar, Rima Moghnieh, Adel F Alothman, Thamer H Alenazi, Fayssal Farahat, Shelby Corman, Caitlyn T Solem, Nirvana Raghubir, Cynthia Macahilig, Seema Haider, Jennifer M Stephens
OBJECTIVES: The objective of this study is to describe the real-world treatment patterns and burden of suspected or confirmed methicillin-resistant Staphylococcus aureus (MRSA) pneumonia in Saudi Arabia and Lebanon. METHODS: A retrospective chart review study evaluated 2011-2012 data from hospitals in Saudi Arabia and Lebanon. Patients were included if they had been discharged with a diagnosis of MRSA pneumonia, which was culture proven or suspected based on clinical criteria...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28202493/a-klebsiella-pneumoniae-antibiotic-resistance-mechanism-that-subdues-host-defences-and-promotes-virulence
#17
Timothy J Kidd, Grant Mills, Joana Sá-Pessoa, Amy Dumigan, Christian G Frank, José L Insua, Rebecca Ingram, Laura Hobley, José A Bengoechea
Klebsiella pneumoniae is an important cause of multidrug-resistant infections worldwide. Recent studies highlight the emergence of multidrug-resistant K. pneumoniae strains which show resistance to colistin, a last-line antibiotic, arising from mutational inactivation of the mgrB regulatory gene. However, the precise molecular resistance mechanisms of mgrB-associated colistin resistance and its impact on virulence remain unclear. Here, we constructed an mgrB gene K. pneumoniae mutant and performed characterisation of its lipid A structure, polymyxin and antimicrobial peptide resistance, virulence and inflammatory responses upon infection...
February 15, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28199348/presentation-management-and-outcomes-of-sepsis-in-adults-and-children-admitted-to-a-rural-ugandan-hospital-a-prospective-observational-cohort-study
#18
Kristina E Rudd, Leonard K Tutaryebwa, T Eoin West
OBJECTIVES: Limited data are available on sepsis in low-resource settings, particularly outside of urban referral centers. We conducted a prospective observational single-center cohort study in May 2013 to assess the presentation, management and outcomes of adult and pediatric patients admitted with sepsis to a community hospital in rural Uganda. METHODS: We consecutively screened all patients admitted to medical wards who met sepsis criteria. We evaluated eligible patients within 24 hours of presentation and 24-48 hours after admission, and followed them until hospital discharge...
2017: PloS One
https://www.readbyqxmd.com/read/28198727/new-guidelines-for-nosocomial-pneumonia
#19
Mark L Metersky, Andre C Kalil
PURPOSE OF REVIEW: Hospital-acquired pneumonia (HAP) and ventilator-associated pneumonia (VAP) remain important causes of morbidity and mortality in hospitalized patients. New evidence-based guidelines for the diagnosis and treatment of these entities were released by the Infectious Diseases Society of America and the American Thoracic Society in 2016. This review summarizes the recommendations contained within these guidelines and their supporting rationale. RECENT FINDINGS: With respect to diagnosis of HAP and VAP, the guidelines suggest using semiquantitative cultures of noninvasively obtained respiratory samples instead of quantitative cultures of invasively obtained samples...
February 13, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28198726/community-acquired-pneumonia-requiring-hospitalization-rational-decision-making-and-interpretation-of-guidelines
#20
Douwe F Postma, Cornelis H van Werkhoven, Jan Jelrik Oosterheert
PURPOSE OF REVIEW: This review focuses on the evidence base for guideline recommendations on the diagnosis, the optimal choice, timing and duration of empirical antibiotic therapy, and the use of microbiological tests for patients hospitalized with community-acquired pneumonia (CAP): issues for which guidelines are frequently used as a quick reference. Furthermore, we will discuss possibilities for future research in these topics. RECENT FINDINGS: Many national and international guideline recommendations, even on critical elements of CAP management, are based on low-to-moderate quality evidence...
February 13, 2017: Current Opinion in Pulmonary Medicine
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