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Acinetobacter calcoaceticus

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https://www.readbyqxmd.com/read/27795305/carbapenem-resistant-acinetobacter-baumannii-and-enterobacteriaceae-in-south-and-southeast-asia
#1
REVIEW
Li-Yang Hsu, Anucha Apisarnthanarak, Erum Khan, Nuntra Suwantarat, Abdul Ghafur, Paul Anantharajah Tambyah
Carbapenem-resistant Gram-negative bacteria, in particular the Acinetobacter baumannii-calcoaceticus complex and Enterobacteriaceae, are escalating global public health threats. We review the epidemiology and prevalence of these carbapenem-resistant Gram-negative bacteria among countries in South and Southeast Asia, where the rates of resistance are some of the highest in the world. These countries house more than a third of the world's population, and several are also major medical tourism destinations. There are significant data gaps, and the almost universal lack of comprehensive surveillance programs that include molecular epidemiologic testing has made it difficult to understand the origins and extent of the problem in depth...
January 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/27742144/evaluation-of-an-ultraviolet-c-light-emitting-device-for-disinfection-of-electronic-devices
#2
Lisa M Li, Titus Wong, Emily Rose, Graham Wickham, Elizabeth Bryce
BACKGROUND: A tabletop-type ultraviolet C (UVC) light-emitting disinfecting device was evaluated for microbiologic effectiveness, safety, usability, and end-user satisfaction. METHODS: Three different inoculums of methicillin-resistant Staphylococcus aureus, Pseudomonas aeruginosa, and Acinetobacter calcoaceticus-baumannii complex strains suspended in both saline and trypticase soy broth were applied onto stainless steel carriers and electronic device surfaces in triplicate and cultured for growth after UVC disinfection...
December 1, 2016: American Journal of Infection Control
https://www.readbyqxmd.com/read/27714593/emergence-of-new-delhi-metallo-beta-lactamase-1-and-other-carbapenemase-producing-acinetobacter-calcoaceticus-baumannii-complex-among-patients-in-hospitals-in-ha-noi-viet-nam
#3
D N Tran, H H Tran, M Matsui, M Suzuki, S Suzuki, K Shibayama, T D Pham, T T Van Phuong, D A Dang, H S Trinh, C T Loan, L T V Nga, H R van Doorn, H F L Wertheim
Acinetobacter baumannii is an important cause of multidrug-resistant hospital acquired infections in the world. Here, we investigate the presence of NDM-1 and other carbapenemases among carbapenem-resistant A. baumannii isolated between August 2010 and December 2014 from three large hospitals in Hanoi, Vietnam. We identified 23/582 isolates (4 %) (11 from hospital A, five from hospital B, and seven from hospital C) that were NDM-1 positive, and among them 18 carried additional carbapenemase genes, including seven isolates carrying NDM-1, IMP-1, and OXA-58 with high MICs for carbapenems...
October 6, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27709647/multi-drug-resistant-acinetobacter-calcoaceticus-acinetobacter-baumannii-complex-infection-outbreak-in-dogs-and-cats-in-a-veterinary-hospital
#4
S Kuzi, S E Blum, N Kahane, A Adler, O Hussein, G Segev, I Aroch
BACKGROUND: Members of the Acinetobacter calcoaceticus-Acinetobacter baumannii complex cause severe outbreaks in humans, and are increasingly reported in animals. OBJECTIVE AND METHODS: A retrospective study, describing a severe outbreak in dogs and cats caused by a multidrug resistant member of the Acinetobacter calcoaceticus-Acinetobacter baumannii complex in a veterinary hospital, between July 2010 and November 2012. RESULTS: The study included 19 dogs and 4 cats...
October 5, 2016: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/27611681/opportunistic-infections-in-hiv-infected-patients-differ-strongly-in-frequencies-and-spectra-between-patients-with-low-cd4-cell-counts-examined-postmortem-and-compensated-patients-examined-antemortem-irrespective-of-the-haart-era
#5
Marta K Powell, Kamila Benková, Pavel Selinger, Marek Dogoši, Iva Kinkorová Luňáčková, Hana Koutníková, Jarmila Laštíková, Alena Roubíčková, Zuzana Špůrková, Lucie Laclová, Václav Eis, Josef Šach, Petr Heneberg
OBJECTIVE: AIDS-related mortality has changed dramatically with the onset of highly active antiretroviral therapy (HAART), which has even allowed compensated HIV-infected patients to withdraw from secondary therapy directed against opportunistic pathogens. However, in recently autopsied HIV-infected patients, we observed that associations with a broad spectrum of pathogens remain, although detailed analyses are lacking. Therefore, we focused on the possible frequency and spectrum shifts in pathogens associated with autopsied HIV-infected patients...
2016: PloS One
https://www.readbyqxmd.com/read/27605498/pcr-assay-based-on-the-gyrb-gene-for-rapid-identification-of-acinetobacter-baumannii-calcoaceticus-complex-at-specie-level
#6
Aline B Teixeira, Juliana Barin, Djuli M Hermes, Afonso L Barth, Andreza F Martins
BACKGROUND: The genus Acinetobacter sp. comprises more than 50 species, and four are closely related and difficult to be distinguished by either phenotypic or genotypic methods: the Acinetobacter calcoaceticus-baumannii complex (ABC). The correct identification at species level is necessary mainly due to the epidemiological aspects. METHODS: We evaluated a multiplex PCR for gyrB gene to identify the species of the ABC using the sequencing of the ITS 16S-23S fragment as a gold standard...
September 8, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27598629/the-role-of-the-genetic-elements-bla-oxa-and-is-aba-1-in-the-acinetobacter-calcoaceticus-acinetobacter-baumannii-complex-in-carbapenem-resistance-in-the-hospital-setting
#7
Vanessa Cristine Kobs, Jéssica Augustini Ferreira, Thaís Alexandra Bobrowicz, Leslie Ecker Ferreira, Roseneide Campos Deglmann, Glauco Adrieno Westphal, Paulo Henrique Condeixa de França
INTRODUCTION: Members of the Acinetobacter genus are key pathogens that cause healthcare-associated infections, and they tend to spread and develop new antibiotic resistance mechanisms. Oxacillinases are primarily responsible for resistance to carbapenem antibiotics. Higher rates of carbapenem hydrolysis might be ascribed to insertion sequences, such as the ISAba1 sequence, near bla OXA genes. The present study examined the occurrence of the genetic elements bla OXA and ISAba1 and their relationship with susceptibility to carbapenems in clinical isolates of the Acinetobacter calcoaceticus-Acinetobacter baumannii complex...
July 2016: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/27552304/emergence-of-antimicrobial-resistance-among-acinetobacter-species-a-global-threat
#8
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/27551277/carbapenem-resistance-in-acinetobacter-baumannii-and-other-acinetobacter-spp-causing-neonatal-sepsis-focus-on-ndm-1-and-its-linkage-to-isaba125
#9
Somdatta Chatterjee, Saswati Datta, Subhasree Roy, Lavanya Ramanan, Anindya Saha, Rajlakshmi Viswanathan, Tapas Som, Sulagna Basu
Carbapenem-resistant determinants and their surrounding genetic structure were studied in Acinetobacter spp. from neonatal sepsis cases collected over 7 years at a tertiary care hospital. Acinetobacter spp. (n = 68) were identified by ARDRA followed by susceptibility tests. Oxacillinases, metallo-β-lactamases (MBLs), extended-spectrum β-lactamases and AmpCs, were detected phenotypically and/or by PCR followed by DNA sequencing. Transconjugants possessing the bla NDM-1(New Delhi metallo-β-lactamase) underwent further analysis for plasmids, integrons and associated genes...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27496018/tigecycline-based-versus-sulbactam-based-treatment-for-pneumonia-involving-multidrug-resistant-acinetobacter-calcoaceticus-acinetobacter-baumannii-complex
#10
Jung-Jr Ye, Huang-Shen Lin, Chun-Fu Yeh, Yen-Mu Wu, Po-Yen Huang, Chien-Chang Yang, Ching-Tai Huang, Ming-Hsun Lee
BACKGROUND: The treatment options for pneumonia involving multidrug-resistant Acinetobacter calcoaceticus-Acinetobacter baumannii (MDR Acb) complex are limited, and the optimal treatment has not been established. METHODS: To compare the efficacy of tigecycline-based with sulbactam (or ampicillin/sulbactam)-based therapy for pneumonia involving MDR Acb complex, we conducted a retrospective study comparing 84 tigecycline-treated adult patients during the period August 2007 to March 2010 with 84 sulbactam or ampicillin/sulbactam-treated adult patients during the period September 2004 to July 2007...
2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27461479/determination-of-synergy-between-sulbactam-meropenem-and-colistin-in-carbapenem-resistant-klebsiella-pneumoniae-and-acinetobacter-baumannii-isolates-and-correlation-with-the-molecular-mechanism-of-resistance
#11
Shakti Laishram, Shalini Anandan, Bakthavatchalam Yamuna Devi, Munusamy Elakkiya, Babu Priyanka, Thukkaram Bhuvaneshwari, John Victor Peter, Kandasmy Subramani, Veeraraghavan Balaji
Treatment of infections with carbapenem-resistant Gram negative organism is a major challenge especially among intensive care patients. Combinations of sulbactam, meropenem and colistin was studied for its synergistic activity against 100 invasive isolates of carbapenem-resistant Klebsiella pneumoniae and Acinetobacter baumannii-calcoaceticus complex by checkerboard assay and time kill assay (TKA). In addition, presence of carbapenemase production was determined by multiplex PCR. Time kill assay detected more synergy than checkerboard assay...
August 2016: Journal of Chemotherapy
https://www.readbyqxmd.com/read/27449800/characteristics-of-invasive-acinetobacter-species-isolates-recovered-in-a-pediatric-academic-center
#12
Avish L Jain, Christian M Harding, Kaivon Assani, Chandra L Shrestha, Mercedees Haga, Amy Leber, Robert S Munson, Benjamin T Kopp
BACKGROUND: Acinetobacter species are associated with increasing mortality due to emerging drug-resistance. Pediatric Acinetobacter infections are largely undefined in developed countries and clinical laboratory identification methods do not reliably differentiate between members of the Acinetobacter calcoaceticus-baumannii complex, leading to improper identification. Therefore we aimed to determine risk factors for invasive Acinetobacter infections within an academic, pediatric setting as well as defining microbiologic characteristics of predominant strains...
2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27432448/acinetobacter-dijkshoorniae-sp-nov-a-member-of-the-acinetobacter-calcoaceticus-acinetobacter-baumannii-complex-mainly-recovered-from-clinical-samples-in-different-countries
#13
Clara Cosgaya, Marta Marí-Almirall, Ado Van Assche, Dietmar Fernández-Orth, Noraida Mosqueda, Murat Telli, Geert Huys, Paul G Higgins, Harald Seifert, Bart Lievens, Ignasi Roca, Jordi Vila
The recent advances in bacterial species identification methods have led to the rapid taxonomic diversification of the genus Acinetobacter. In the present study, phenotypic and molecular methods have been used to determine the taxonomic position of a group of 12 genotypically distinct strains belonging to the Acinetobacter calcoaceticus-Acinetobacter baumannii (ACB) complex, initially described by Gerner-Smidt and Tjernberg in 1993, that are closely related to Acinetobacter pittii. Strains characterized in this study originated mostly from human samples obtained in different countries over a period of 15 years...
October 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27412356/rapid-species-identification-and-epidemiological-analysis-of-carbapenem-resistant-acinetobacter-spp-by-a-pcr-based-open-reading-frame-typing-method
#14
Yuki Yamada, Kentaro Endo, Kaori Sawase, Marie Anetai, Kazuya Narita, Yuji Hatakeyama, Katsunori Ishifuji, Makiko Kurota, Akira Suwabe
The spread of carbapenem-resistant Acinetobacter spp. has become a global problem. In this study, 18 carbapenem-resistant Acinetobacter calcoaceticus-baumannii (ACB) complexes, identified using a conventional biochemical method at our hospital during 2004-2013, were studied for species identification and epidemiological analyses. Species identification was performed using matrix-assisted laser desorption ionization-time-of-flight MS, a partial sequence analysis of rpoB and a PCR-based ORF typing (POT) method...
September 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27362503/structural-basis-of-selective-aromatic-pollutant-sensing-by-the-effector-binding-domain-of-mopr-an-ntrc-family-transcriptional-regulator
#15
Shamayeeta Ray, Menachem J Gunzburg, Matthew Wilce, Santosh Panjikar, Ruchi Anand
Phenol and its derivatives are common pollutants that are present in industrial discharge and are major xenobiotics that lead to water pollution. To monitor as well as improve water quality, attempts have been made in the past to engineer bacterial in vivo biosensors. However, due to the paucity of structural information, there is insufficiency in gauging the factors that lead to high sensitivity and selectivity, thereby impeding development. Here, we present the crystal structure of the sensor domain of MopR (MopR(AB)) from Acinetobacter calcoaceticus in complex with phenol and its derivatives to a maximum resolution of 2...
August 19, 2016: ACS Chemical Biology
https://www.readbyqxmd.com/read/27343836/incidence-management-and-visual-outcomes-in-pediatric-endophthalmitis-following-cataract-surgery-by-a-single-surgeon
#16
Sumita Agarkar, Roshani Desai, Malathi Jambulingam, Singh H Sumeer, Rajiv Raman
PURPOSE: To report the incidence of endophthalmitis following cataract surgery by a single surgeon in children and to describe its microbiological profile, management, and visual outcomes. METHODS: The medical records of patients who underwent cataract surgery performed by a single surgeon between January 2000 and December 2012 were retrospectively reviewed to identify those with postoperative endophthalmitis. The primary goals of the study were to describe the incidence of endophthalmitis, microbiological profile, and measure visual acuity after management...
June 23, 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/27312551/development-and-evaluation-of-species-specific-pcr-for-detection-of-nine-acinetobacter-species
#17
Xue Min Li, Ji Ae Choi, In Sun Choi, Joong Ki Kook, Young-Hyo Chang, Geon Park, Sook Jin Jang, Seong Ho Kang, Dae Soo Moon
Molecular methods have the potential to improve the speed and accuracy of Acinetobacter species identification in clinical settings. The goal of this study is to develop species-specific PCR assays based on differences in the RNA polymerase beta-subunit gene (rpoB) to detect nine commonly isolated Acinetobacter species including Acinetobacter baumannii, Acinetobacter calcoaceticus, Acinetobacter pittii, Acinetobacter nosocomialis, Acinetobacter lwoffii, Acinetobacter ursingii, Acinetobacter bereziniae, Acinetobacter haemolyticus, and Acinetobacter schindleri...
May 2016: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/27268113/effect-of-plant-growth-promoting-bacteria-on-the-growth-and-fructan-production-of-agave-americana-l
#18
Neyser De La Torre-Ruiz, Víctor Manuel Ruiz-Valdiviezo, Clara Ivette Rincón-Molina, Martha Rodríguez-Mendiola, Carlos Arias-Castro, Federico Antonio Gutiérrez-Miceli, Héctor Palomeque-Dominguez, Reiner Rincón-Rosales
The effect of plant growth-promoting bacteria inoculation on plant growth and the sugar content in Agave americana was assessed. The bacterial strains ACO-34A, ACO-40, and ACO-140, isolated from the A. americana rhizosphere, were selected for this study to evaluate their phenotypic and genotypic characteristics. The three bacterial strains were evaluated via plant inoculation assays, and Azospirillum brasilense Cd served as a control strain. Phylogenetic analysis based on the 16S rRNA gene showed that strains ACO-34A, ACO-40 and ACO-140 were Rhizobium daejeonense, Acinetobacter calcoaceticus and Pseudomonas mosselii, respectively...
July 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/27223476/molecular-epidemiology-and-clinical-impact-of-acinetobacter-calcoaceticus-baumannii-complex-in-a-belgian-burn-wound-center
#19
Daniel De Vos, Jean-Paul Pirnay, Florence Bilocq, Serge Jennes, Gilbert Verbeken, Thomas Rose, Elkana Keersebilck, Petra Bosmans, Thierry Pieters, Mony Hing, Walter Heuninckx, Frank De Pauw, Patrick Soentjens, Maia Merabishvili, Pieter Deschaght, Mario Vaneechoutte, Pierre Bogaerts, Youri Glupczynski, Bruno Pot, Tanny J van der Reijden, Lenie Dijkshoorn
Multidrug resistant Acinetobacter baumannii and its closely related species A. pittii and A. nosocomialis, all members of the Acinetobacter calcoaceticus-baumannii (Acb) complex, are a major cause of hospital acquired infection. In the burn wound center of the Queen Astrid military hospital in Brussels, 48 patients were colonized or infected with Acb complex over a 52-month period. We report the molecular epidemiology of these organisms, their clinical impact and infection control measures taken. A representative set of 157 Acb complex isolates was analyzed using repetitive sequence-based PCR (rep-PCR) (DiversiLab) and a multiplex PCR targeting OXA-51-like and OXA-23-like genes...
2016: PloS One
https://www.readbyqxmd.com/read/27215877/infection-prevention-in-the-deployed-environment
#20
Heather C Yun, Clinton K Murray
Up to 50% of combat injured patients from recent conflicts have suffered infectious complications, predominantly with multidrug-resistant (MDR) bacteria acquired nosocomially in the chain of tactical combat casualty care. These bacteria have ranged from MDR Acinetobacter baumannii-calcoaceticus associated with Operation Iraqi Freedom (OIF), to extended spectrum beta-lactamase producing Enterobacteriaceae from operations in Afghanistan. Experience from interventions at Level III facilities demonstrate that basic infection control (IC) procedures, such as improvements in hand hygiene, use of ventilator associated pneumonia bundles, and antimicrobial stewardship, can improve outcomes even in austere environments...
April 2016: U.S. Army Medical Department Journal
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