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https://www.readbyqxmd.com/read/28729667/effect-of-inoculation-of-burkholderia-sp-strain-sj98-on-bacterial-community-dynamics-and-para-nitrophenol-3-methyl-4-nitrophenol-and-2-chloro-4-nitrophenol-degradation-in-soil
#1
Jun Min, Bin Wang, Xiaoke Hu
para-Nitrophenol (PNP), 3-methyl-4-nitrophenol (3M4NP), and 2-chloro-4-nitrophenol (2C4NP) are highly toxic compounds that have caused serious environmental issues. We inoculated an artificially contaminated soil with Burkholderia sp. strain SJ98, which has the ability to degrade PNP, 3M4NP, and 2C4NP, and quantified bioremediation. There was accelerated degradation of all nitrophenols in inoculated treatments compared to the un-inoculated treatments. The indigenous bacteria were able to degrade PNP, but not 3M4NP or 2C4NP...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729264/complete-genome-sequence-of-burkholderia-stabilis-fermp-21014
#2
Kenji Konishi, Toshitaka Kumagai, Shin-Ichi Sakasegawa, Tomohiro Tamura
Cholesterol esterase (EC 3.1.1.13) was identified in a bacterium, Burkholderia stabilis strain FERMP-21014. Here, we report the complete genome sequence of B. stabilis FERMP-21014, which has been used in the commercial production of cholesterol esterase. The genome sequence information may be useful for improving production levels of cholesterol esterase.
July 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28729203/epidemiological-cut-off-value-of-clinical-isolates-of-burkholderia-pseudomallei-from-northern-queensland-to-meropenem-ceftazidime-trimethoprim-sulphamethoxazole-and-doxycycline-by-microbroth-dilution
#3
Samuel Maloney, Cathy Engler, Robert Norton
Melioidosis is caused by the bacteria Burkholderia pseudomallei. The most common antibiotics used to treat melioidosis in Australia are meropenem, ceftazidime, trimethoprim-sulphamethoxazole (TMP-SMX), and doxycycline. The European Committee on Antimicrobial Susceptibility Testing (EUCAST) and The Clinical & Laboratory Standards Institute (CLSI) do not provide standards for assessing the susceptibility of B. pseudomallei for these agents. The International Standards Organisation (ISO) microbroth dilution method is accepted by both CLSI and EUCAST as the gold standard of antimicrobial susceptibility testing...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28728591/antimicrobial-susceptibility-pattern-of-clinical-isolates-of-burkholderia-pseudomallei-in-bangladesh
#4
Subarna Dutta, Sabah Haq, Mohammad Rokibul Hasan, Jalaluddin Ashraful Haq
BACKGROUND: Melioidosis an infectious disease, caused by a Gram negative bacterium called Burkholderia pseudomallei, is endemic in Bangladesh. This organism is sensitive to limited number of antimicrobial agents and need prolonged treatment. There is no comprehensive data on the antimicrobial susceptibility profile of B. pseudomallei isolated in Bangladesh over last several years. The present study aimed to determine the antimicrobial susceptibility pattern of B. pseudomallei isolated in a tertiary care hospital of Dhaka city from 2009 to 2015...
July 20, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28726626/human-infection-with-burkholderia-thailandensis-china-2013
#5
Kai Chang, Jie Luo, Huan Xu, Min Li, Fengling Zhang, Jin Li, Dayong Gu, Shaoli Deng, Ming Chen, Weiping Lu
Burkholderia thailandensis infection in humans is uncommon. We describe a case of B. thailandensis infection in a person in China, a location heretofore unknown for B. thailandensis. We identified the specific virulence factors of B. thailandensis, which may indicate a transition to a new virulent form.
August 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28721855/cell-surface-physiology-and-outer-cell-envelope-impermeability-for-hydrophobic-substances-in-burkholderia-multivorans
#6
Sallie A Ruskoski, Franklin R Champlin
PURPOSE: The purpose of the present study was to obtain a better understanding of the relationship between cell surface physiology and outer cellular envelope permeability for hydrophobic substances in mucoid and non-mucoid B. multivorans strains, as well as in two capsule-deficient derivatives of a mucoid parental strain. METHODOLOGY: Cell surface hydrophobicity properties were determined using the hydrocarbon adherence method, while outer cell envelope accessibility and permeability for non-polar compounds were measured using hydrophobic antimicrobial agent susceptibility and fluorescent probe assays...
July 18, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28719324/susceptibility-of-clinical-isolates-of-burkholderia-pseudomallei-to-a-lipid-a-biosynthesis-inhibitor
#7
Sineenart Sengyee, Natnaree Saiprom, Suporn Paksanont, Direk Limmathurotsakul, Vanaporn Wuthiekanun, Narisara Chantratita
Burkholderia pseudomallei is the causative agent of melioidosis, a serious infection associated with high mortality and relapse. Current antimicrobial therapy using ceftazidime (CAZ) is often ineffective. Inhibitors of LpxC, the enzyme responsible for lipid A biosynthesis, have potential antimicrobial activity against several Gram-negative bacteria in vivo, but their activity against B. pseudomallei is unclear. Herein, we investigated the susceptibility of B. pseudomallei clinical isolates to LpxC-4, an LpxC inhibitor, and LpxC-4 in combination with CAZ...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719265/differences-in-inflammation-patterns-induced-by-african-and-asian-burkholderia-pseudomallei-isolates-in-mice
#8
Tassili A F Weehuizen, Emma Birnie, Bart Ferwerda, Joris J T H Roelofs, Alex F de Vos, Martin P Grobusch, W Joost Wiersinga
AbstractBurkholderia pseudomallei is the causative agent of melioidosis, an emerging tropical disease of high mortality. Sub-Saharan Africa represents potential melioidosis "hotspots"; however, to date, only a few cases have been reported. Here in, we compared the inflammatory patterns induced by a B. pseudomallei strain recently isolated from a fatal Gabonese case with the Thai reference strain B. pseudomallei-1026b and Burkholderia thailandensis-E264. Ex vivo, no differences were observed in terms of cellular responsiveness between strains...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28714263/enhancing-methyl-parathion-degradation-by-the-immobilization-of-burkholderia-sp-isolated-from-agricultural-soils
#9
Maikel Gilberto Fernández-López, Carolina Popoca-Ursino, Enrique Sánchez-Salinas, Raunel Tinoco-Valencia, Jorge Luis Folch-Mallol, Edgar Dantán-González, Ma Laura Ortiz-Hernández
Organophosphate pesticides are of great interest for research because they are currently the most commonly used pesticides. In this study, a bacterial strain capable of completely degrading methyl parathion (MP) was isolated from agricultural soils in central Mexico. This strain was designated strain S5-2 and was identified as Burkholderia cenocepacia. To increase degradation yields, cells were immobilized on three different supports: powdered zeolite and Opuntia sp. and Agave sp. fibers. The results indicated a significant increase in MP hydrolysis and p-nitrophenol (PNP) degradation with immobilized cells compared to free cell cultures...
July 17, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28713341/prevalence-host-range-and-comparative-genomic-analysis-of-temperate-ochrobactrum-phages
#10
Claudia Jäckel, Stefan Hertwig, Holger C Scholz, Karsten Nöckler, Jochen Reetz, Jens A Hammerl
Ochrobactrum and Brucella are closely related bacteria that populate different habitats and differ in their pathogenic properties. Only little is known about mobile genetic elements in these genera which might be important for survival and virulence. Previous studies on Brucella lysogeny indicated that active phages are rare in this genus. To gain insight into the presence and nature of prophages in Ochrobactrum, temperate phages were isolated from various species and characterized in detail. In silico analyses disclosed numerous prophages in published Ochrobactrum genomes...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28711221/the-evolution-of-lung-transplantation-for-cystic-fibrosis-a-2017-update
#11
REVIEW
Gregory Snell, Anna Reed, Marc Stern, Denis Hadjiliadis
Lung transplantation (LTx) is an established therapy for patients with end-stage cystic fibrosis (CF). Indeed, CF is the commonest indication for those aged<50years of age needing LTx. CF LTx is associated with a 45% 10year survival - according to the world's largest registry. It is important all otherwise suitable CF patients with severe lung disease have a timely referral for discussion and consideration of the possibility of LTx. LTx discussions must carefully consider colonisation or infection with Burkholderia cenocepacia, Mycobacterium abscessus and Scediosporium - as good LTx outcomes cannot be guaranteed...
July 12, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28710229/pirate-project-point-of-care-informatics-based-randomised-controlled-trial-for-decreasing-overuse-of-antibiotic-therapy-in-gram-negative-bacteraemia
#12
Angela Huttner, Werner C Albrich, Pierre-Yves Bochud, Angèle Gayet-Ageron, Anne Rossel, Elodie von Dach, Stephan Harbarth, Laurent Kaiser
INTRODUCTION: Antibiotic overuse drives antibiotic resistance. The optimal duration of antibiotic therapy for Gram-negative bacteraemia (GNB), a common community and hospital-associated infection, remains unknown and unstudied via randomised controlled trials (RCTs). METHODS AND ANALYSIS: This investigator-initiated, multicentre, non-inferiority, informatics-based point-of-care RCT will randomly assign adult hospitalised patients receiving microbiologically efficacious antibiotic(s) for GNB to (1) 14 days of antibiotic therapy, (2) 7 days of therapy or (3) an individualised duration determined by clinical response and 75% reduction in peak C reactive protein (CRP) values...
July 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28707874/designing-probes-for-immunodiagnostics-structural-insights-into-an-epitope-targeting-i-burkholderia-i-infections
#13
Riccardo Capelli, Elena Matterazzo, Marco Amabili, Claudio Peri, Alessandro Gori, Paola Gagni, Marcella Chiari, Ganjana Lertmemongkolchai, Marina Cretich, Martino Bolognesi, Giorgio Colombo, Louise Jane Gourlay
Structure-based epitope prediction drives the design of diagnostic peptidic probes to reveal specific antibodies elicited in response to infections. We previously identified a highly immunoreactive epitope from the peptidoglycan-associated lipoprotein (Pal) antigen from <i>Burkholderia pseudomallei</i>, which could also diagnose <i>Burkholderia cepacia</i> infections. Here, considering the high phylogenetic conservation within <i>Burkholderia</i> species, we ask whether cross-reactivity can be reciprocally displayed by the synthetic epitope from <i>B...
July 14, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28705969/first-draft-genome-for-a-burkholderia-mallei-isolate-originating-from-a-glanderous-mule-from-brazil
#14
G Girault, C Woudstra, B Martin, F Vorimore, V Lucia de Assis Santana, P Fach, N Madani, K Laroucau
Burkholderia mallei is the etiological agent of glanders. Here, we present the draft genome sequence of Burkholderia mallei strain 16-2438_BM#8 that was isolated from a mule found dead in Pernambuco, northeast Brazil. It is the first available genomic sequence from a strain isolated on the American continent.
July 13, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28705667/clinical-characteristics-of-bacteraemia-caused-by-burkholderia-cepacia-complex-species-and-antimicrobial-susceptibility-of-the-isolates-in-a-medical-centre-in-taiwan
#15
Ying-Chun Chien, Chun-Hsing Liao, Wang-Huei Sheng, Jung-Yien Chien, Yu-Tsung Huang, Chong-Jen Yu, Po-Ren Hsueh
This study investigated the clinical characteristics and outcomes of bacteraemia due to Burkholderia cepacia complex (BCC) species among 54 patients without cystic fibrosis from January 2013 to February 2015. BCC isolates were identified to the species level by the Bruker Biotyper MALDI-TOF MS system and by sequencing analysis of the 16S rRNA and recA genes. Antimicrobial susceptibilities of the isolates were determined by the agar dilution method. Sequencing of the recA gene in the 54 blood isolates revealed 37 (68...
July 10, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28705217/monitoring-clinical-and-microbiological-evolution-of-a-cystic-fibrosis-patient-over-26%C3%A2-years-experience-of-a-brazilian-cf-centre
#16
Cassiana da Costa Ferreira Leite, Tania Wrobel Folescu, Mônica de Cássia Firmida, Renata Wrobel Folescu Cohen, Robson Souza Leão, Flávia Alvim Dutra de Freitas, Rodolpho Mattos Albano, Claudia Henrique da Costa, Elizabeth Andrade Marques
BACKGROUND: Burkholderia cepacia complex is a group of opportunistic pathogens in cystic fibrosis (CF) patients believed to be associated with poor prognosis and patient-to-patient transmissibility. Little is known about clinical outcomes after B. vietnamiensis chronic colonization/infection. CASE PRESENTATION: A 33 yo male patient had diagnosis of CF by 7 yo, after recurrent pneumonia during infancy and lobectomy (left upper lobe) at 6 yo. Burkholderia cepacia complex (Bcc) was first isolated by 13 yo, and the patient fulfilled the criteria for chronic colonization by 15 yo...
July 14, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28701847/melioidosis-an-emerging-infection-with-fatal-outcomes
#17
Isabella Princess, R Ebenezer, Nagarajan Ramakrishnan, Arun Kumar Daniel, S Nandini, M A Thirunarayan
According to the Centers for Disease Control and Prevention, from being nonendemic for melioidosis, India has now become endemic for the disease since 2012. Until then, melioidosis cases were being reported sporadically from India. There have been isolated case reports from few states across the country for the past few years. Most of the times, Burkholderia pseudomallei may be misreported as Pseudomonas species, especially in resource-poor laboratories. Due to its varied clinical presentation, the specific clinical diagnosis can be difficult, thereby making laboratory diagnosis mandatory...
June 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28698922/characterization-of-methyl-parathion-degradation-by-a-burkholderia-zhejiangensis-strain-ceib-s4-3-isolated-from-agricultural-soils
#18
Elida C Popoca-Ursino, Fernando Martínez-Ocampo, Edgar Dantán-González, Enrique Sánchez-Salinas, Ma Laura Ortiz-Hernández
Through the use of an enrichment technique, we isolated from the agricultural soils of Morelos in central México a strain of Burkholderia zhejiangensis identified as CEIB S4-3, it's could use the pesticide methyl parathion (MP) as the only source of carbon and degrade completely p-nitrophenol (PNP). For more efficient MP and PNP degradation by the CEIB S4-3 strain, the absence of an extra carbon source, a large inoculum and an MP concentration up to 50 mg/l are required. Sequence and annotation analysis of the draft genome, showed presence of mpd functional gene, which was expressed and its activity on the MP was confirmed...
July 11, 2017: Biodegradation
https://www.readbyqxmd.com/read/28695846/crystal-structure-of-a-%C3%AE-aminopeptidase-from-an-australian-burkholderia-sp
#19
Marietta John-White, Geoff J Dumsday, Priscilla Johanesen, Dena Lyras, Nyssa Drinkwater, Sheena McGowan
β-Aminopeptidases are a unique group of enzymes that have the unusual capability to hydrolyze N-terminal β-amino acids from synthetic β-peptides. β-Peptides can form secondary structures mimicking α-peptide-like structures that are resistant to degradation by most known proteases and peptidases. These characteristics of β-peptides give them great potential as peptidomimetics. Here, the X-ray crystal structure of BcA5-BapA, a β-aminopeptidase from a Gram-negative Burkholderia sp. that was isolated from activated sludge from a wastewater-treatment plant in Australia, is reported...
July 1, 2017: Acta Crystallographica. Section F, Structural Biology Communications
https://www.readbyqxmd.com/read/28694797/genome-data-provides-high-support-for-generic-boundaries-in-burkholderia-sensu-lato
#20
Chrizelle W Beukes, Marike Palmer, Puseletso Manyaka, Wai Y Chan, Juanita R Avontuur, Elritha van Zyl, Marcel Huntemann, Alicia Clum, Manoj Pillay, Krishnaveni Palaniappan, Neha Varghese, Natalia Mikhailova, Dimitrios Stamatis, T B K Reddy, Chris Daum, Nicole Shapiro, Victor Markowitz, Natalia Ivanova, Nikos Kyrpides, Tanja Woyke, Jochen Blom, William B Whitman, Stephanus N Venter, Emma T Steenkamp
Although the taxonomy of Burkholderia has been extensively scrutinized, significant uncertainty remains regarding the generic boundaries and composition of this large and heterogeneous taxon. Here we used the amino acid and nucleotide sequences of 106 conserved proteins from 92 species to infer robust maximum likelihood phylogenies with which to investigate the generic structure of Burkholderia sensu lato. These data unambiguously supported five distinct lineages, of which four correspond to Burkholderia sensu stricto and the newly introduced genera Paraburkholderia, Caballeronia, and Robbsia...
2017: Frontiers in Microbiology
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