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Burkholderia pseudomallei

Sonja Obersteller, Heinrich Neubauer, Ralf Matthias Hagen, Hagen Frickmann
The extraction and further processing of nucleic acids (NA) from formalin-fixed paraffin-embedded (FFPE) tissues for microbiological diagnostic polymerase chain reaction (PCR) approaches is challenging. Here, we assessed the effects of five different commercially available nucleic acid extraction kits on the results of real-time PCR. FFPE samples from organs of Burkholderia pseudomallei-infected Swiss mice were subjected to processing with five different extraction kits from QIAGEN (FFPE DNA Tissue Kit, EZ1 DNA Tissue Kit, DNA Mini Kit, DNA Blood Mini Kit, and FlexiGene DNA Kit) in combination with three different real-time PCRs targeting B...
September 29, 2016: European Journal of Microbiology & Immunology
James A St John
No abstract text is available yet for this article.
October 20, 2016: Virulence
R C Bernhards, C K Cote, K Amemiya, D M Waag, C P Klimko, P L Worsham, S L Welkos
Burkholderia pseudomallei (Bp) and Burkholderia mallei (Bm), the agents of melioidosis and glanders, respectively, are Tier 1 biothreats. They infect humans and animals, causing disease ranging from acute and fatal to protracted and chronic. Chronic infections are especially challenging to treat, and the identification of in vitro phenotypic markers which signal progression from acute to persistent infection would be extremely valuable. First, a phenotyping strategy was developed employing colony morphotyping, chemical sensitivity testing, macrophage infection, and lipopolysaccharide fingerprint analyses to distinguish Burkholderia strains...
October 13, 2016: Archives of Microbiology
Talerngsak Kanjanabuch, Nuttha Lumlertgul, Lachlan J Pearson, Tanittha Chatsuwan, Krit Pongpirul, Asada Leelahavanichkul, Nisa Thongbor, Gunticha Nuntawong, Laksamon Praderm, Pantiwa Wechagama, Surapong Narenpitak, Apinya Wechpradit, Worauma Punya, Guttiga Halue, Phetpailin Naka, Somboon Jeenapongsa, Somchai Eiam-Ong
♦ Background: Melioidosis, an infectious disease caused by Burkholderia pseudomallei, is endemic in Southeast Asia and Northern Australia. Although a wide range of clinical manifestations from this organism are known, peritonitis associated with peritoneal dialysis (PD) has rarely been reported. ♦ Patients and Methods: Peritoneal dialysis patients from all regions in Thailand were eligible for the study if they had peritonitis and either peritoneal fluid or effluent culture positive for B.pseudomallei Patient data obtained included baseline characteristics, laboratory investigations, treatments, and clinical outcomes...
October 13, 2016: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
Chinn-Woan Lowe, Benjamin A Satterfield, Daniel B Nelson, Joseph D Thiriot, Michael J Heder, Jordon K March, David S Drake, Cynthia S Lew, Annette J Bunnell, Emily S Moore, Kim L O'Neill, Richard A Robison
The Burkholderia pseudomallei complex classically consisted of B. mallei, B. pseudomallei, and B. thailandensis, but has now expanded to include B. oklahomensis, B. humptydooensis, and three unassigned Burkholderia clades. Methods for detecting and differentiating the B. pseudomallei complex has been the topic of recent research due to phenotypic and genotypic similarities of these species. B. mallei and B. pseudomallei are recognized as CDC Tier 1 select agents, and are the causative agents of glanders and melioidosis, respectively...
2016: PloS One
Ujjwayini Ray, Soma Dutta, Suresh Ramasubban, Dhiman Sen, Indrajeet Kumar Tiwary
OBJECTIVE: Melioidosis caused by the Gram-negative bacterium Burkholderia pseudomallei is a very serious infection and has been sporadically reported from the Indian subcontinent. This disease entity can have acute and chronic presentations involving different organ systems. The purpose of this study is to analyze the risk factors, clinical presentations, therapy and outcome of culture proven cases of melioidosis. METHODS: We carried out a retrospective study of eight culture proven cases of melioidosis at a tertiary care hospital in West Bengal...
May 2016: Journal of the Association of Physicians of India
Kay M Tomashek, Aidsa Rivera, Brenda Torres-Velasquez, Elizabeth A Hunsperger, Jorge L Munoz-Jordan, Tyler M Sharp, Irma Rivera, Dario Sanabria, Dianna M Blau, Renee Galloway, Jose Torres, Rosa Rodriguez, Javier Serrano, Carlos Chávez, Francisco Dávila, Janice Perez-Padilla, Esther M Ellis, Gladys Caballero, Laura Wright, Sherif R Zaki, Carmen Deseda, Edda Rodriguez, Harold S Margolis
BACKGROUND: Dengue is a leading cause of morbidity throughout the tropics; however, accurate population-based estimates of mortality rates are not available. METHODS/PRINCIPAL FINDINGS: We established the Enhanced Fatal Acute Febrile Illness Surveillance System (EFASS) to estimate dengue mortality rates in Puerto Rico. Healthcare professionals submitted serum and tissue specimens from patients who died from a dengue-like acute febrile illness, and death certificates were reviewed to identify additional cases...
October 2016: PLoS Neglected Tropical Diseases
Yuichi Katanami, Satoshi Kutsuna, Atsuko Horino, Takehiro Hashimoto, Yoshikazu Mutoh, Kei Yamamoto, Nozomi Takeshita, Kayoko Hayakawa, Shuzo Kanagawa, Yasuyuki Kato, Norio Ohmagari
Melioidosis, an infectious disease with high mortality, caused by Burkholderia pseudomallei, is endemic in southeast Asia and northern Australia. In Indonesia, autochthonous cases have been rarely reported, with most cases being sporadic and occurring in travelers. Herein, we report a fatal case of neurological melioidosis in a traveler from Indonesia presenting with septic shock.
October 5, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
Chidchamai Kewcharoenwong, Darawan Rinchai, Arnone Nithichanon, Gregory J Bancroft, Manabu Ato, Ganjana Lertmemongkolchai
The major risk factor for melioidosis, an infectious disease caused by B. pseudomallei, is diabetes mellitus. More than half of diabetic melioidosis patients in Thailand were prescribed glibenclamide. Recent evidence demonstrates that glibenclamide reduces pro-inflammatory cytokine production by polymorphonuclear neutrophils (PMNs) of diabetic individuals in response to this bacterial infection. However, the mechanisms by which glibenclamide affects cytokine production are unknown. We found that PMNs from glibenclamide-treated diabetic individuals infected with live B...
October 7, 2016: Scientific Reports
Nopphasul Sirijant, Rasana W Sermswan, Surasakdi Wongratanacheewin
Burkholderia pseudomallei, the causative agent of melioidosis, has been found to increase its resistance to antibiotics when growing as a biofilm. The resistances are related to several mechanisms. One of the possible mechanisms is the efflux pump. Using bioinformatics analysis, it was found that BPSL1661, BPSL1664 and BPSL1665 were orthologous genes of the efflux transporter encoding genes for biofilm related antibiotic resistance PA1874-PA1877 genes in Pseudomonas aeruginosa strain PAO1. Expressions of selected encoding genes for the efflux transporter system during biofilm formation were investigated...
September 30, 2016: Journal of Medical Microbiology
Hossein Zolfagharian, Mohammad Mohajeri, Mahdi Babaie
OBJECTIVES: Mellitine, a major component of bee venom (BV, Apis mellifera), is more active against gram positive than gram negative bacteria. Moreover, BV has been reported to have multiple effects, including antibacterial, antivirus, and anti-inflammation effects, in various types of cells. In addition, wasp venom has been reported to have antibacterial properties. The aim of this study was to evaluate the antibacterial activity of BV against selected gram positive and gram negative bacterial strains of medical importance...
September 2016: Journal of Pharmacopuncture
Viriya Hantrakun, Patpong Rongkard, Malinee Oyuchua, Premjit Amornchai, Cherry Lim, Vanaporn Wuthiekanun, Nicholas Pj Day, Sharon J Peacock, Direk Limmathurotsakul
: Burkholderia pseudomallei is a soil-dwelling bacterium and the cause of melioidosis, which kills an estimated 89,000 people per year worldwide. Agricultural workers are at high risk of infection due to repeated exposure. Little is known about soil physicochemical properties associated with presence or absence of the organism. Here, we evaluated the soil physicochemical properties and presence of B. pseudomallei in 6,100 soil samples collected from 61 rice fields in Thailand. The presence of B...
September 30, 2016: Applied and Environmental Microbiology
Mei-Perng Lim, Mohd Firdaus-Raih, Sheila Nathan
Burkholderia pseudomallei, the causative agent of melioidosis, is among a growing number of bacterial pathogens that are increasingly antibiotic resistant. Antimicrobial peptides (AMPs) have been investigated as an alternative approach to treat microbial infections, as generally, there is a lower likelihood that a pathogen will develop resistance to AMPs. In this study, 36 candidate Caenorhabditis elegans genes that encode secreted peptides of <150 amino acids and previously shown to be overexpressed during infection by B...
2016: Frontiers in Microbiology
Patoo Withatanung, Narisara Chantratita, Veerachat Muangsombut, Natnaree Saiprom, Ganjana Lertmemongkolchai, Jochen Klumpp, Martha R J Clokie, Edouard E Galyov, Sunee Korbsrisate
BACKGROUND: Burkholderia pseudomallei is a soil saprophytic bacterium that causes melioidosis. The infection occurs through cutaneous inoculation, inhalation or ingestion. Bacteriophages (phages) in the same ecosystem may significantly impact the biology of this bacterium in the environment, and in their culturability in the laboratory. METHODS/PRINCIPAL FINDINGS: The soil samples were analysed for the presence of bacteria using culture methods, and for phages using plaque assays on B...
September 2016: PLoS Neglected Tropical Diseases
Jason W Sahl, Adam J Vazquez, Carina M Hall, Joseph D Busch, Apichai Tuanyok, Mark Mayo, James M Schupp, Madeline Lummis, Talima Pearson, Kenzie Shippy, Rebecca E Colman, Christopher J Allender, Vanessa Theobald, Derek S Sarovich, Erin P Price, Alex Hutcheson, Jonas Korlach, John J LiPuma, Jason Ladner, Sean Lovett, Galina Koroleva, Gustavo Palacios, Direk Limmathurotsakul, Vanaporn Wuthiekanun, Gumphol Wongsuwan, Bart J Currie, Paul Keim, David M Wagner
UNLABELLED: Whole-genome sequence (WGS) data are commonly used to design diagnostic targets for the identification of bacterial pathogens. To do this effectively, genomics databases must be comprehensive to identify the strict core genome that is specific to the target pathogen. As additional genomes are analyzed, the core genome size is reduced and there is erosion of the target-specific regions due to commonality with related species, potentially resulting in the identification of false positives and/or false negatives...
2016: MBio
Vesna Memišević, Kamal Kumar, Nela Zavaljevski, David DeShazer, Anders Wallqvist, Jaques Reifman
BACKGROUND: Burkholderia mallei and B. pseudomallei are the causative agents of glanders and melioidosis, respectively, diseases with high morbidity and mortality rates. B. mallei and B. pseudomallei are closely related genetically; B. mallei evolved from an ancestral strain of B. pseudomallei by genome reduction and adaptation to an obligate intracellular lifestyle. Although these two bacteria cause different diseases, they share multiple virulence factors, including bacterial secretion systems, which represent key components of bacterial pathogenicity...
2016: BMC Bioinformatics
Yao-Shen Chen, Hsi-Hsun Lin, Pei-Tan Hsueh, Wei-Fan Ni, Pei-Ju Liu, Pei-Shih Chen, Hsin-Hou Chang, Der-Shan Sun, Ya-Lei Chen
The development of neurologic melioidosis was linked to the elicitation of Burkholderia pseudomallei-infected L-selectin(hi)CD11b(+) BALB/c cells in our previous study. However, whether monocytic L-selectin (CD62L, encoded by the sell gene) is a key factor remains uncertain. In the present study, after establishing multi-organ foci via hematogenous routes, we demonstrated that B. pseudomallei GFP steadily persisted in blood, splenic, hepatic and bone marrow (BM) Ly6C monocytes; however, the circulating CD16/32(+)CD45(hi)GFP(+) brain-infiltrating leukocytes (BILs) derived from the blood Ly6C monocytes were expanded in BALB/c but not in C57BL/6 bacteremic melioidosis...
September 19, 2016: Virulence
Sara I Ruiz, Nashwa El-Gendy, Larry E Bowen, Cory Berkland, Mark M Bailey
Melioidosis is an infectious disease caused by Burkholderia pseudomallei. The disease is responsible for a high proportion of human pneumonia and fatal bacteremia in the endemic areas of the world and is highly resistant to most commonly available antibiotics. Studies have shown that prophylactic antibiotic treatment, when administered 24 h following bacterial challenge, can prevent infection in a murine model. Prophylactic treatment against this disease using a pulmonary antibiotic formulation has not previously been examined, but may reduce the number of treatments required, allow for the delivery of higher doses, eliminate the need for intravenous administration, and help to minimize systemic side effects...
November 2016: Journal of Pharmaceutical Sciences
Nittaya Khakhum, Umaporn Yordpratum, Atcha Boonmee, Unchalee Tattawasart, Jorge L M Rodrigues, Rasana W Sermswan
The lytic phage ST79 of Burkholderia pseudomallei can lyse a broad range of its host including antibiotic resistant isolates from within using a set of proteins, holin, lysB, lysC and endolysin, a peptidoglycan (PG) hydrolase enzyme. The phage ST79 endolysin gene identified as peptidase M15A was cloned, expressed and purified to evaluate its potential to lyse pathogenic bacteria. The molecular size of the purified enzyme is approximately 18 kDa and the in silico study cited here indicated the presence of a zinc-binding domain predicted to be a member of the subfamily A of a metallopeptidase...
December 2016: AMB Express
Hassan Ismail Musa, Latiffah Hassan, Zulkifli Hj Shamsuddin, Chandrawathani Panchadcharam, Zunita Zakaria, Saleha Abdul Aziz
Soil is considered to be a major reservoir of Burkholderia pseudomallei in the environment. This paper investigates soil physicochemical properties that may influence presence of B. pseudomallei in soil samples from small ruminant farms in Peninsular Malaysia. Soil samples were collected from the farms and cultured for B. pseudomallei. The texture, organic matter and water contents, pH, elemental contents, cation exchange capacities, carbon, sulfur and nitrogen contents were determined. Analysis of soil samples that were positive and negative for B...
2016: PloS One
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