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https://www.readbyqxmd.com/read/28350901/gram-negative-bacterial-infections-research-priorities-accomplishments-and-future-directions-of-the-antibacterial-resistance-leadership-group
#1
Yohei Doi, Robert A Bonomo, David C Hooper, Keith S Kaye, James R Johnson, Cornelius J Clancy, Joshua T Thaden, Martin E Stryjewski, David van Duin
Antimicrobial resistance in pathogenic gram-negative bacteria is one of the most pressing challenges in the field of infectious diseases and is one of 4 key areas of unmet medical need identified by the Antibacterial Resistance Leadership Group (ARLG). The mission of the Gram-Negative Committee is to advance our knowledge of these challenging infections and implement studies to improve patient outcomes. Studies have fallen primarily into 2 broad categories: prospective cohort studies and interventional trials...
March 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28346512/bacterial-and-viral-pathogen-spectra-of-acute-respiratory-infections-in-under-5-children-in-hospital-settings-in-dhaka-city
#2
Golam Sarower Bhuyan, Mohammad Amir Hossain, Suprovath Kumar Sarker, Asifuzzaman Rahat, Md Tarikul Islam, Tanjina Noor Haque, Noorjahan Begum, Syeda Kashfi Qadri, A K M Muraduzzaman, Nafisa Nawal Islam, Mohammad Sazzadul Islam, Nusrat Sultana, Manjur Hossain Khan Jony, Farhana Khanam, Golam Mowla, Abdul Matin, Firoza Begum, Tahmina Shirin, Dilruba Ahmed, Narayan Saha, Firdausi Qadri, Kaiissar Mannoor
The study aimed to examine for the first time the spectra of viral and bacterial pathogens along with the antibiotic susceptibility of the isolated bacteria in under-5 children with acute respiratory infections (ARIs) in hospital settings of Dhaka, Bangladesh. Nasal swabs were collected from 200 under-five children hospitalized with clinical signs of ARIs. Nasal swabs from 30 asymptomatic children were also collected. Screening of viral pathogens targeted ten respiratory viruses using RT-qPCR. Bacterial pathogens were identified by bacteriological culture methods and antimicrobial susceptibility of the isolates was determined following CLSI guidelines...
2017: PloS One
https://www.readbyqxmd.com/read/28344408/potential-antibacterial-activity-of-some-saudi-arabia-honey
#3
Ahmed G Hegazi, Faiz M Al Guthami, Ahmed F M Al Gethami, Fyrouz M Abd Allah, Ashraf A Saleh, Ehab A Fouad
AIM: The aim of this study was to investigate the potential antibacterial activity of some Saudi Arabia honey against selected bacterial strains of medical importance. MATERIALS AND METHODS: A total of 10 Saudi Arabia honey used to evaluate their antimicrobial activity against some antibiotic-resistant pathogenic bacterial strains. The bacterial strains were Staphylococcus aureus, Streptococcus pyogenes, Klebsiella pneumoniae, Escherichia coli, and Pseudomonas aeruginosa...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28344161/cross-resistance-to-human-cationic-antimicrobial-peptides-and-to-polymyxins-mediated-by-the-plasmid-encoded-mcr-1
#4
Jan Dobias, Laurent Poirel, Patrice Nordmann
OBJECTIVES: To evaluate whether acquired resistance to cationic antimicrobial peptides (CAMP) group molecules, being normal components of the human immune system, may select co-resistance to antibiotic peptides such as polymyxins, considering they share the same mechanism of action. We aimed to evaluate strains producing the recently identified plasmid-encoded polymyxin resistance determinant MCR-1, which is a phosphoethanolamine transferase that modifies the lipopolysaccharide structure of Gram-negative bacteria...
March 23, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28343916/epidemiologic-trend-of-adult-bacterial-meningitis-in-southern-taiwan-2006-2015
#5
Chia-Yi Lien, Chi-Ren Huang, Wan-Chen Tsai, Che-Wei Hsu, Nai-Wen Tsai, Chiung-Chih Chang, Cheng-Hsien Lu, Chun-Chih Chien, Wen-Neng Chang
The purpose of this study is to analyze recent epidemiologic trend of adult bacterial meningitis (ABM) in Taiwan. The clinical features, laboratory data and therapeutic outcomes of 157 patients with ABM from 2006-2015 were analyzed. The results were compared with those of our previous two epidemiologic studies of ABM (1st study: 202 cases, January 1986-June 1999; 2nd study: 181 cases, July 1999-December 2005). Of the 157 patients with ABM, 96 were men and 61 women, and 68.2% (107/157) of them had a postneurosurgical state as the underlying condition...
March 23, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28341427/community-onset-carbapenem-resistant-klebsiella-pneumoniae-urinary-tract-infections-in-infancy-following-nicu-hospitalisation
#6
Eleni Vergadi, Maria Bitsori, Sofia Maraki, Emmanouil Galanakis
INTRODUCTION: Urinary tract infection (UTI) is a common bacterial infection in childhood with favourable outcome. However, the recent emergence of UTI caused by multidrug-resistant pathogens, such as carbapenem-resistant Enterobacteriaceae (CRE), has become a great concern worldwide. CRE are mainly responsible for nosocomial infections and community-onset CRE infections in healthy individuals are rare. OBJECTIVES: In this study, we report a series of infants without substantial genitourinary abnormalities that were admitted with community-onset urinary tract infections (UTIs) caused by carbapenem-resistant Klebsiella pneumoniae (CRKP) and we discuss their aetiology...
March 11, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28341097/first-report-of-oxa-232-producing-klebsiella-pneumoniae-strains-in-tunisia
#7
Hella Lahlaoui, Rémy A Bonnin, Mohamed Ben Moussa, Anis Ben Haj Khelifa, Thierry Naas
Eleven carbapenem-resistant Klebsiella pneumoniae isolates were recovered from the military hospital of Tunis, Tunisia. Three of these isolates carried the carbapenemase blaOXA-232 gene recently identified in France. These isolates were clonally related and co-expressed the extended-spectrum ß-lactamase, CTX-M-15. This work identified the occurrence of OXA-232 producers in North-African countries.
March 11, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28340803/evaluation-of-ureteral-stent-colonization-in-live-donor-renal-transplant-recipients
#8
M Sarier, M Demir, I Duman, Y Yuksel, A Demirbas
BACKGROUND: Ureteral stent insertion during kidney transplantation is a matter of debate. Stenting has been proven to reduce the risk of surgical complications. In addition, it has been reported to increase risks such as urinary tract infections especially after operation. Ureteral stent colonization (USC) is known to play a role in the pathogenesis of stent related-infections. The aim of this study was (1) to assess the frequency of USC and values of urine cultures in identifying colonizing bacteria; (2) to assess the importance of indwelling time for USC in live-donor renal transplant recipients; and (3) to evaluate the biomarker role of neutrophil-to-lymphocyte ratio (NLR) on USC...
April 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28339856/the-hypervirulent-variant-of-klebsiella-pneumoniae-is-established-in-new-york-city
#9
Andrew Parrott, Jun Shi, Fann Wu
No abstract text is available yet for this article.
March 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28339675/high-reported-rates-of-antimicrobial-resistance-in-indian-neonatal-and-pediatric-blood-stream-infections
#10
Dhanya Dharmapalan, Anita Shet, Vijay Yewale, Mike Sharland
Background.: There is real shortage of national data on antimicrobial resistance rates in Indian neonates and children. A descriptive review was conducted to determine the patterns of antimicrobial resistance in isolates of blood stream infection among hospitalized children in India. Methods.: Published and gray literature on antibiotic resistance in children was searched using "Google Scholar", "Scopus", and "PubMed" databases between January 2000 and July 2015...
February 18, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28339623/the-molecular-and-clinical-epidemiology-of-extended-spectrum-cephalosporin-and-carbapenem-resistant-enterobacteriaceae-at-4-us-pediatric-hospitals
#11
Danielle M Zerr, Scott J Weissman, Chuan Zhou, Matthew P Kronman, Amanda L Adler, Jessica E Berry, Jaipreet Rayar, Jeff Myers, Wren L Haaland, Carey-Ann D Burnham, Alexis Elward, Jason Newland, Rangaraj Selvarangan, Kaede V Sullivan, Theoklis Zaoutis, Xuan Qin
Objective.: In this report, we aim to describe the epidemiology of extended-spectrum cephalosporin-resistant (ESC-R) and carbapenem-resistant (CR) Enterobacteriaceae infections in children. Methods.: ESC-R and CR Enterobacteriaceae isolates from normally sterile sites of patients aged <22 years from 4 freestanding pediatric medical centers were collected along with the associated clinical data. Results.: The overall frequencies of ESC-R and CR isolates according to hospital over the 4-year study period ranged from 0...
January 19, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28337666/joint-infection-due-to-raoultella-planticola-first-report
#12
E Bonnet, F Julia, G Giordano, J Lourtet-Hascoet
The genus Raoultella has been separated from the genus Klebsiella in 2001. Two main species are responsible for human infections: R. ornithinolytica and R. planticola. The most frequent infections due to R. planticola include cystitis, pneumonia and bacteremia (mostly in immunocompromised hosts). To date, no joint or bone infection has been reported. We describe the first case of septic arthritis due to R. planticola following an arthroscopy with intra-articular injection of corticosteroids. Evolution was favorable after arthroscopic lavage and antibiotic therapy with quinolones...
March 23, 2017: Infection
https://www.readbyqxmd.com/read/28337568/hospital-microbial-surface-colonization-revealed-during-monitoring-of-klebsiella-spp-pseudomonas-aeruginosa-and-non-tuberculous-mycobacteria
#13
Pedro Geadas Farias, Fernando Gama, Diogo Reis, Susana Alarico, Nuno Empadinhas, José Carlos Martins, Ana Figueiredo de Almeida, Paula Vasconcelos Morais
Hospital environmental conditions, human occupancy, and the characteristics of the equipment influence the survival of microbial communities and raise a concern with regard to nosocomial infections. The objective of the present work was to use the monitoring of Pseudomonas aeruginosa, Klebsiella spp. and non-tuberculous mycobacteria as a strategy to improve knowledge on microbial colonization of non-critical equipment and surfaces, in a tertiary hospital from Central Portugal. A 3-month microbiological survey was performed in a district teaching hospital...
March 23, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28337489/antibiotic-resistance-profiling-and-microbiota-of-the-upper-respiratory-tract-of-apparently-healthy-dogs-in-ibadan-south-west-nigeria
#14
Oluwafemi Babatunde Daodu, Elizabeth Adesola Amosun, Daniel Oladimeji Oluwayelu
BACKGROUND: Rearing of dogs and other pets has become increasingly popular in modern society. Bacterial flora resides within the nasal and oral cavities of dogs and when chanced, can be pathogenic. Certain similarities between humans and dogs portends dangerous behavioral habits that could lead to zoonotic disease transmission. This study was aimed at isolation, identification and antibiotic profiling of bacteria from nasal swabs of apparently healthy dogs. The zoonotic risk was also considered...
2017: African Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28337187/defining-and-evaluating-a-core-genome-multilocus-sequence-typing-scheme-for-whole-genome-sequence-based-typing-of-klebsiella-pneumoniae
#15
Haijian Zhou, Wenbing Liu, Tian Qin, Chen Liu, Hongyu Ren
At present, the most used methods for Klebsiella pneumoniae subtyping are multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). However, the discriminatory power of MLST could not meet the need for distinguishing outbreak and non-outbreak isolates and the PFGE is time-consuming and labor-intensive. A core genome multilocus sequence typing (cgMLST) scheme for whole-genome sequence-based typing of K. pneumoniae was developed for solving the disadvantages of these traditional molecular subtyping methods...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28336608/draft-genome-sequence-of-klebsiella-pneumoniae%C3%A2-subsp-%C3%A2-pneumoniae-atcc-9621
#16
Anja Poehlein, Hristo Najdenski, Diliana D Simeonova
We present here the 5.561-Mbp assembled draft genome sequence of Klebsiella pneumoniae subsp. pneumoniae ATCC 9621, a phosphite- and organophosphonate-assimilating Gammaproteobacterium. The genome harbors 5,179 predicted protein-coding genes.
March 23, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28335205/photosensitizer-embedded-polyacrylonitrile-nanofibers-as-antimicrobial-non-woven-textile
#17
Sarah L Stanley, Frank Scholle, Jiadeng Zhu, Yao Lu, Xiangwu Zhang, Xingci Situ, Reza A Ghiladi
Toward the objective of developing platform technologies for anti-infective materials based upon photodynamic inactivation, we employed electrospinning to prepare a non-woven textile comprised of polyacrylonitrile nanofibers embedded with a porphyrin-based cationic photosensitizer; termed PAN-Por((+)). Photosensitizer loading was determined to be 34.8 nmol/mg material; with thermostability to 300 °C. Antibacterial efficacy was evaluated against four bacteria belonging to the ESKAPE family of pathogens (Staphylococcus aureus; vancomycin-resistant Enterococcus faecium; Acinetobacter baumannii; and Klebsiella pneumonia), as well as Escherichia coli...
April 20, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335198/gold-nanoparticles-an-efficient-antimicrobial-agent-against-enteric-bacterial-human-pathogen
#18
Shahzadi Shamaila, Noshin Zafar, Saira Riaz, Rehana Sharif, Jawad Nazir, Shahzad Naseem
Enteric bacterial human pathogens, i.e., Escherichia coli, Staphylococcus aureus, Bacillus subtilis and Klebsiella pneumoniae, are the major cause of diarrheal infections in children and adults. Their structure badly affects the human immune system. It is important to explore new antibacterial agents instead of antibiotics for treatment. This project is an attempt to explain how gold nanoparticles affect these bacteria. We investigated the important role of the mean particle size, and the inhibition of a bacterium is dose-dependent...
April 14, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334288/genome-sequencing-and-comparative-analysis-of-three-hypermucoviscous-klebsiella-pneumoniae-strains-isolated-in-russia
#19
Angelina A Kislichkina, Anastasia I Lev, Ekaterina V Komisarova, Nadezhda K Fursova, Vera P Myakinina, Tatiana N Mukhina, Alexander A Bogun, Nikolay V Volozhantsev
The prevalence and characteristics of hypermucoviscous (HV) strains among Klebsiella pneumoniae isolated in Russian hospitals were investigated. The HV strains were accounted for 11% K. pneumoniae isolates collected on the period from 2011 to 2016, and were characterized by belonging to K1, K2, K20 and K57 serotypes. Whole genome sequences (WGSs) of K. pneumoniae HV clinical strains KPi261 (SCPM-O-B-7850) and KPB4010 (SCPM-O-B-7846) belonging to K1 and K2 capsular types, as well as WGSs of K. pneumoniae strain KPM9 (SCPM-O-B-7749) of K20 capsular type isolated from freshwater were completed...
March 9, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28334005/multi-scale-model-of-drug-induced-adaptive-resistance-of-gram-negative-bacteria-to-polymyxin-b
#20
Wojciech Krzyzanski, Gauri G Rao
The purpose of this report is to apply multi-scale modeling using the theory of physiologically structured populations (PSP) to develop a mathematical model for antimicrobial resistance based on a heterogeneous distribution of receptors and affinities among bacterial cells. The theory has been tested on data obtained from an in vitro static time-kill infection model analyzing the pharmacodynamics of polymyxin B against Gram-negative bacteria. The drug binding parameter KD (dissociation equilibrium constant) is assumed to vary between the bacterial cells...
2017: PloS One
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