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acinetobacter baumannii bloodstream infections

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https://www.readbyqxmd.com/read/27895018/the-occurrence-of-diverse-abgri1-type-genomic-islands-in-acinetobacter-baumannii-global-clone-2-gc2-isolates-from-korea
#1
Dae Hun Kim, Sook-In Jung, Ki Tae Kwon, Kwan Soo Ko
In this study, we analyzed the frequency of the AbGRI1-type genomic island (GI) and its association with genotypes. We obtained 130 A. baumannii isolates causing bloodstream infections from patients in Korea. Antimicrobial susceptibility testing and multilocus sequence typing were performed. The presence of AbGRI1-type GIs and their structure were determined by sequential PCR and sequencing. Ninety-eight isolates (75.3%) representing 14 sequence types (STs) belonged to CC208, corresponding to global clone 2 (GC2)...
November 28, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27852378/-analysis-of-the-protein-expression-differences-between-colonized-and-infectious-multidrug-resistant-acinetobacter-baumannii
#2
W J Sui, M Wang, Y F Huang, X X Lu
Objective: To analyze the protein expression differences between colonized multidrug-resistant acinetobacter baumannii (MDR-AB) and infectious MDR-AB using comparative proteomics and matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS) and to explore the molecular characteristics of MDR-AB infections. Methods: A total of 59 MDR-AB strains including 23 of bloodstream infections MDR-AB and 36 of nasal, pharyngeal or environmental colonization MDR-AB were collected from Beijing Tongren Hospital between January 2008 and December 2011...
November 8, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27728770/investigation-of-extensively-drug-resistant-blaoxa-23-producing-acinetobacter-baumannii-spread-in-a-greek-hospital
#3
Angeliki Mavroidi, Maria Katsiari, Eleftheria Palla, Sofia Likousi, Zoi Roussou, Charikleia Nikolaou, Evangelia D Platsouka
A rapid increase was observed in the incidence of extensively drug-resistant Acinetobacter baumannii (XDR Aba) isolates in a Greek hospital during 2014. To investigate the causes of this rise, the antimicrobial resistance profiles of all carbapenem-resistant (CARB-R) Aba isolates recovered during 2014-2015 were determined. Selected XDR Aba isolates (n = 13) were characterized by molecular methods. XDR Aba (48 isolates) represented 21.4% of the 224 CARB-R Aba recovered during the study period. The 13 selected XDR Aba isolates were positive for the blaOXA-23, the intrinsic blaOXA-51, and the adeB gene of the AdeABC efflux pump, and all belonged to the 3LST ST101, corresponding to the international clone II...
October 11, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27688611/bloodstream-infections-in-febrile-neutropenic-patients-at-a-tertiary-cancer-institute-in-south-india-a-timeline-of-clinical-and-microbial-trends-through-the-years
#4
K Govind Babu, D Lokanatha, K C Lakshmaiah, M C Suresh Babu, Linu A Jacob, Gita R Bhat, Harsha Vardhana, Mahua Sinha, B R Vijaykumar, B G Sumati, R S Jayshree
INTRODUCTION: Febrile neutropenia (FN) is an oncological emergency. The choice of empiric therapy depends on the locally prevalent pathogens and their sensitivities, the sites of infection, and cost. The Infectious Diseases Society of America guidelines are being followed for the management of FN in India. METHODS: This is a prospective observational study conducted at a tertiary care cancer centre from September 2012 to September 2014. OBJECTIVES: The objectives of this study were as follows: (1) To review the pattern of microbial flora, susceptibility pattern, and important clinical variables among bloodstream infections in febrile neutropenic patients with solid tumors and hematological malignancies...
July 2016: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/27677795/acinetobacter-baumannii-coordinates-urea-metabolism-with-metal-import-to-resist-host-mediated-metal-limitation
#5
Lillian J Juttukonda, Walter J Chazin, Eric P Skaar
: During infection, bacterial pathogens must adapt to a nutrient metal-limited environment that is imposed by the host. The innate immune protein calprotectin inhibits bacterial growth in vitro by chelating the divalent metal ions zinc (Zn(2+), Zn) and manganese (Mn(2+), Mn), but pathogenic bacteria are able to cause disease in the presence of this antimicrobial protein in vivo. One such pathogen is Acinetobacter baumannii, a Gram-negative bacterium that causes pneumonia and bloodstream infections that can be complicated by resistance to multiple antibiotics...
September 27, 2016: MBio
https://www.readbyqxmd.com/read/27659437/a-5-year-surveillance-study-on-antimicrobial-resistance-of-acinetobacter-baumannii-clinical-isolates-from-a-tertiary-greek-hospital
#6
Sofia Maraki, Elpis Mantadakis, Viktoria Eirini Mavromanolaki, Diamantis P Kofteridis, George Samonis
BACKGROUND: Acinetobacter baumannii has emerged as a major cause of nosocomial outbreaks. It is particularly associated with nosocomial pneumonia and bloodstream infections in immunocompromised and debilitated patients with serious underlying pathologies. Over the last two decades, a remarkable rise in the rates of multidrug resistance to most antimicrobial agents that are active against A. baumannii has been noted worldwide. We evaluated the rates of antimicrobial resistance and changes in resistance over a 5-year period (2010-2014) in A...
September 2016: Infection & Chemotherapy
https://www.readbyqxmd.com/read/27647068/-analysis-of-the-pathogenic-characteristics-of-162-severely-burned-patients-with-bloodstream-infection
#7
Y L Gong, Z C Yang, S P Yin, M X Liu, C Zhang, X Q Luo, Y Z Peng
Objective: To analyze the distribution and drug resistance of pathogen isolated from severely burned patients with bloodstream infection, so as to provide reference for the clinical treatment of these patients. Methods: Blood samples of 162 severely burned patients (including 120 patients with extremely severe burn) with bloodstream infection admitted into our burn ICU from January 2011 to December 2014 were collected. Pathogens were cultured by fully automatic blood culture system, and API bacteria identification panels were used to identify pathogen...
September 20, 2016: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/27615546/burn-associated-bloodstream-infections-in-pediatric-burn-patients-time-distribution-of-etiologic-agents
#8
İlker Devrim, Ahu Kara, Mine Düzgöl, Aytaç Karkıner, Nuri Bayram, Günyüz Temir, Arzu Şencan, Yelda Sorguç, Gamze Gülfidan, Münevver Hoşgör
BACKGROUND: Infections are the leading cause of morbidity and mortality in patients with burns in burn units. Bloodstream infections (BSIs) in patients with burns may result from burn wound infection, use of invasive devices such as central venous catheters, and translocation of the gastrointestinal flora. OBJECTIVE: In this study, we investigated the distribution and antimicrobial drug resistance of causative pathogens in children with burns and the durational changes of microorganisms in the distribution of BSIs in children...
September 8, 2016: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/27614427/epidemiological-characterization-of-acinetobacter-baumannii-bloodstream-isolates-from-a-chinese-burn-institute-a-three-year-study
#9
Guangtao Huang, Supeng Yin, Lijuan Xiang, Yali Gong, Kedai Sun, Xiaoqiang Luo, Cheng Zhang, Zichen Yang, Liuyang Deng, Bei Jiang, Shouguang Jin, Jing Chen, Yizhi Peng
Acinetobacter baumannii infection is a serious threat to burn patients. Bacteremia due to A. baumannii is becoming the most common cause of mortality following burn. However, the epidemiology of A. baumannii causing burn-related bloodstream infections has rarely been reported. We retrospectively collected 81 A. baumannii isolates from the bloodstream of burn patients over a three-year period. Antibiotic susceptibility tests, the prevalence of antibiotic-resistant genes and sequence typing (ST) were conducted to characterize these strains...
November 2016: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/27552304/emergence-of-antimicrobial-resistance-among-acinetobacter-species-a-global-threat
#10
Nina M Clark, George G Zhanel, Joseph P Lynch
PURPOSE OF REVIEW: Bacteria within the genus Acinetobacter [principally Acinetobacter baumannii-calcoaceticus complex (ABC)] are Gram-negative coccobacilli that may cause serious nosocomial infections (particularly ventilator-associated pneumonia and infections of the bloodstream, urinary tract, and wounds) as well as community-acquired infections (often skin/soft tissue infections in the context of trauma). Within the past two decades, Acinetobacter spp. have been responsible for an increasing number of infections in intensive care units (ICUs) globally...
October 2016: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/27516521/draft-genome-sequence-of-colistin-resistant-acinetobacter-baumannii-strain-vb22595-isolated-from-a-central-line-associated-bloodstream-infection
#11
Balaji Veeraraghavan, Shalini Anandan, Naveen Kumar Devanga Ragupathi, Saranya Vijayakumar, Dhiviya Prabaa Muthuirulandi Sethuvel, Indranil Biswas
Acinetobacter baumannii is an important emerging pathogen that causes health care-associated infections. In this study, we determined the genome of a multidrug-resistant clinical strain, VB22595, isolated from a hospital in Southern India. The draft genome indicates that strain VB22595 encodes a genome of ~3.92 Mb in size and does not contain plasmid derived MCR-1 for colistin resistance.
2016: Genome Announcements
https://www.readbyqxmd.com/read/27506797/acinetobacter-baumannii-phenylacetic-acid-metabolism-influences-infection-outcome-through-a-direct-effect-on-neutrophil-chemotaxis
#12
Md Saruar Bhuiyan, Felix Ellett, Gerald L Murray, Xenia Kostoulias, Gustavo M Cerqueira, Keith E Schulze, Mohd Hafidz Mahamad Maifiah, Jian Li, Darren J Creek, Graham J Lieschke, Anton Y Peleg
Innate cellular immune responses are a critical first-line defense against invading bacterial pathogens. Leukocyte migration from the bloodstream to a site of infection is mediated by chemotactic factors that are often host-derived. More recently, there has been a greater appreciation of the importance of bacterial factors driving neutrophil movement during infection. Here, we describe the development of a zebrafish infection model to study Acinetobacter baumannii pathogenesis. By using isogenic A. baumannii mutants lacking expression of virulence effector proteins, we demonstrated that bacterial drivers of disease severity are conserved between zebrafish and mammals...
August 23, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27452903/nosocomial-bloodstream-infections-in-neurosurgery-a-10-year-analysis-in-a-center-with-high-antimicrobial-drug-resistance-prevalence
#13
Parmenion P Tsitsopoulos, Elias Iosifidis, Charalampos Antachopoulos, Dimitrios M Anestis, Ekaterini Karantani, Angeliki Karyoti, Georgios Papaevangelou, Eftychios Kyriazidis, Emmanuel Roilides, Christos Tsonidis
BACKGROUND: Data on nosocomial bloodstream infections (NBSI) in neurosurgery is limited. This study aimed to analyze the epidemiology, microbiology, outcome, and risk factors for death in neurosurgical patients with NBSI in a multidrug resistant setting. METHODS: Neurosurgical patients with a confirmed NBSI within the period 2003-2012 were retrospectively analyzed. NBSI was diagnosed when a pathogen was isolated from a blood sample obtained after the first 48 h of hospitalization...
September 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27382554/risk-factors-for-mortality-in-patients-with-bloodstream-infections-during-the-pre-engraftment-period-after-hematopoietic-stem-cell-transplantation
#14
Igor Stoma, Igor Karpov, Natalia Milanovich, Anatoly Uss, Igor Iskrov
BACKGROUND: Bloodstream infections (BSI) remain a frequent complication during the pre-engraftment period after hematopoietic stem cell transplantation (HSCT), resulting in high mortality rates. This study evaluated risk factors for mortality in hematopoietic stem cell transplant recipients with BSI in the pre-engraftment period. METHODS: This prospective case control study was performed at the Center of Hematology and Bone Marrow Transplantation in Minsk, Republic of Belarus...
June 2016: Blood Research
https://www.readbyqxmd.com/read/27303682/acinetobacter-baumannii-genes-required-for-bacterial-survival-during-bloodstream-infection
#15
Sargurunathan Subashchandrabose, Sara Smith, Valerie DeOrnellas, Sebastien Crepin, Monica Kole, Carina Zahdeh, Harry L T Mobley
Acinetobacter baumannii is emerging as a leading global multiple-antibiotic-resistant nosocomial pathogen. The identity of genes essential for pathogenesis in a mammalian host remains largely unknown. Using transposon-directed insertion-site sequencing (TraDIS), we identified A. baumannii genes involved in bacterial survival in a leukopenic mouse model of bloodstream infection. Mice were inoculated with a pooled transposon mutant library derived from 109,000 mutants, and TraDIS was used to map transposon insertion sites in the genomes of bacteria in the inoculum and of bacteria recovered from mouse spleens...
January 2016: MSphere
https://www.readbyqxmd.com/read/27220329/abrp-a-new-gene-confers-reduced-susceptibility-to-tetracycline-glycylcine-chloramphenicol-and-fosfomycin-classes-in-acinetobacter-baumannii
#16
X Li, J Quan, Y Yang, J Ji, L Liu, Y Fu, X Hua, Y Chen, B Pi, Y Jiang, Y Yu
Acinetobacter baumannii, a non-fermenting gram-negative coccobacillus, is a major pathogen responsible for a variety of healthcare-associated infections, including pneumonia, urinary tract and bloodstream infections. Moreover, A. baumannii is associated with alarming increases in drug resistance rates to almost all available antibiotics leaving limited treatment options. Here, we characterize the biological functions of a novel gene, abrp, which encodes a peptidase C13 family. We demonstrate that the abrp is associated with decreased susceptibility to tetracycline, minocycline, doxycycline, tigecycline, chloramphenicol and fosfomycin...
August 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27140419/point-prevalence-survey-of-healthcare-associated-infections-in-beijing-china-a-survey-and-analysis-in-2014
#17
J Y Liu, Y H Wu, M Cai, C L Zhou
BACKGROUND: Point-prevalence studies can identify priorities for infection control. AIM: In May 2014, the Beijing Nosocomial Infection Control and Quality Improvement Centre organized a point-prevalence survey in 124 acute care hospitals in Beijing province. By analysing the survey results and factors affecting the point prevalence of healthcare-associated infections (HCAIs) in secondary and tertiary acute care hospitals in a certain area of China, this study provides evidence and reference to monitor HCAIs in a wide variety of hospitals...
July 2016: Journal of Hospital Infection
https://www.readbyqxmd.com/read/27093936/-analysis-on-the-prevalence-of-central-venous-catheter-related-infection-in-burn-patients-and-its-risk-factors
#18
Li Fang, Fan Wang, Kedai Sun, Tao Zhou, Yali Gong, Yizhi Peng
OBJECTIVE: To investigate the prevalence of central venous catheter-related infection (CRI) in burn patients and its risk factors, so as to guide the clinical practice. METHODS: Clinical data of 5 026 days of 480 cases of central venous catheterization altogether in 228 burn patients admitted to our ward from June 2011 to December 2014, conforming to the study criteria, were retrospectively analyzed. (1) The incidence of CRI and that of catheter-related bloodstream infection (CRBSI) in patients (the infection rates per thousand days were calculated) and mortality due to them, and detection of concerning bacteria were recorded after each case of catheterization...
April 2016: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/27056030/retrospective-data-about-the-catheter-related-complications-and-management-in-massive-bus-burn-casualties
#19
Hongfei Jiang, Hang Hu, Haitao Ren, Chunmao Han, Xingang Wang, Chuangang You, Ruiyi Zhao
PURPOSE: This is a single-center, descriptive report of the management and complications of venous catheter use in 19 severely burned passengers from a bus fire that occurred on July 5, 2014, in Hangzhou. METHODS: We recorded the parameters of the catheters insertion and indwelling. Sampling of each removed catheter was conducted to monitor for catheter-related infections. Bedside ultrasound screening was performed for recording central venous catheter (CVC)-related complications...
July 12, 2016: Journal of Vascular Access
https://www.readbyqxmd.com/read/26944004/intensive-care-unit-acquired-infections-in-a-tertiary-care-hospital-an-epidemiologic-survey-and-influence-on-patient-outcomes
#20
Sanwar M Mitharwal, Sandhya Yaddanapudi, Neerja Bhardwaj, Vikas Gautam, Manisha Biswal, Lakshminarayana Yaddanapudi
BACKGROUND AND OBJECTIVE: Nosocomial infections are common in intensive care units (ICUs), but the pattern of infections and the distribution of microorganisms vary. We studied the ICU-acquired infections and their effect on patient outcomes in our ICU. METHODS: Patients admitted to our ICU for >48 hours were studied prospectively over a year. Infections were diagnosed based on Centers for Disease Control and Prevention guidelines. Antibiotics were administered based on culture and sensitivity...
July 1, 2016: American Journal of Infection Control
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