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https://www.readbyqxmd.com/read/28096229/disseminated-melioidosis-in-the-head-and-neck
#1
Tze Ling Loh, Sergios Latis, Graeme Crossland, Hemi Patel
A 35-year-old man was admitted to an intensive care unit with unilateral facial swelling and septic shock after multiple presentations to the emergency department with non-specific unilateral pain over the parotid area. A CT scan of his neck showed diffuse right-sided facial soft tissue infection, mastoid effusion and temporal lobe cerebritis. The upper lobes of his lungs had cannonball lesions that were suggestive of septic lung metastases. Blood cultures and ear canal swabs were positive for Burkholderia pseudomallei The temporal lobe cerebritis eventually developed into an abscess, necessitating a cortical mastoidectomy, craniectomy and temporal lobectomy...
January 17, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28078837/endocarditis-in-melioidosis
#2
L B Piyasiri, S A Wickramasinghe, V C Lekamvasam, E M Corea, R Gunarathne, U Priyadarshana
No abstract text is available yet for this article.
30, 2016: Ceylon Medical Journal
https://www.readbyqxmd.com/read/28066900/boosting-of-post-exposure-human-t-and-b-cell-recall-responses-in-vivo-by-burkholderia-pseudomallei-related-proteins
#3
Arnone Nithichanon, Louise J Gourlay, Gregory J Bancroft, Manabu Ato, Yoshimasa Takahashi, Ganjana Lertmemongkolchai
Burkholderia pseudomallei is the causative agent of melioidosis, an infectious disease with high incidence and mortality in South East Asia and Northern Australia. To date there is no protective vaccine and antibiotic treatment is prolonged and not always effective. Most people living in endemic areas have been exposed to the bacteria and have developed some immunity, which may have helped prevent disease. Here, we used a humanized mouse model (hu-PBL-SCID), reconstituted with human peripheral blood mononuclear cells (PBMCs) from seropositive donors, to illustrate the potential of three known antigens (FliC, OmpA and N-PilO2) for boosting both T- and B-cell immune responses...
January 9, 2017: Immunology
https://www.readbyqxmd.com/read/28045926/survival-and-intra-nuclear-trafficking-of-burkholderia-pseudomallei-strategies-of-evasion-from-immune-surveillance
#4
Jamuna Vadivelu, Kumutha Malar Vellasamy, Jaikumar Thimma, Vanitha Mariappan, Wen-Tyng Kang, Leang-Chung Choh, Esaki M Shankar, Kum Thong Wong
BACKGROUND: During infection, successful bacterial clearance is achieved via the host immune system acting in conjunction with appropriate antibiotic therapy. However, it still remains a tip of the iceberg as to where persistent pathogens namely, Burkholderia pseudomallei (B. pseudomallei) reside/hide to escape from host immune sensors and antimicrobial pressure. METHODS: We used transmission electron microscopy (TEM) to investigate post-mortem tissue sections of patients with clinical melioidosis to identify the localisation of a recently identified gut microbiome, B...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28042405/imported-case-of-melioidosis-in-oman-case-report
#5
Nada Al Tamtami, Faryal Khamis, Amina Al-Jardani
Melioidosis is an infectious disease caused by the bacterium Burkholderia pseudomallei. It is most commonly described in Southeast Asia and Northern Australia and some imported cases in non-endemic areas. We describe the case of a 55-year-old Omani man with fulminant sepsis who worked in Laos, Cambodia. B. pseudomallei was isolated from the patient's blood and was identified by means of microbiological and biochemical tests. We highlight the importance of careful attention to non-fermentative gram-negative rods in a septic patients who have worked or travelled to Southeast Asia...
January 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/28028452/burkholderia-pseudomallei-type-iii-secreted-protein-bipc-role-in-actin-modulation-and-translocation-activities-required-for-the-bacterial-intracellular-lifecycle
#6
Wen Tyng Kang, Kumutha Malar Vellasamy, Lakshminarayanan Rajamani, Roger W Beuerman, Jamuna Vadivelu
Melioidosis, an infection caused by the facultative intracellular pathogen Burkholderia pseudomallei, has been classified as an emerging disease with the number of patients steadily increasing at an alarming rate. B. pseudomalleipossess various virulence determinants that allow them to invade the host and evade the host immune response, such as the type III secretion systems (TTSS). The products of this specialized secretion system are particularly important for the B. pseudomallei infection. Lacking in one or more components of the TTSS demonstrated different degrees of defects in the intracellular lifecycle of B...
2016: PeerJ
https://www.readbyqxmd.com/read/28025002/sulfonamide-inhibition-profile-of-the-%C3%AE-carbonic-anhydrase-identified-in-the-genome-of-the-pathogenic-bacterium-burkholderia-pseudomallei-the-etiological-agent-responsible-of-melioidosis
#7
Sonia Del Prete, Daniela Vullo, Pietro Di Fonzo, Sameh M Osman, Zeid AlOthman, William A Donald, Claudiu T Supuran, Clemente Capasso
A new γ-carbonic anhydrase (CA, EC 4.1.1.1) was cloned and characterized kinetically in the genome of the bacterial pathogen Burkholderia pseudomallei, the etiological agent of melioidosis, an endemic disease of tropical and sub-tropical regions of the world. The catalytic activity of this new enzyme, BpsCAγ, is significant with a kcat of 5.3×10(5)s(-1) and kcat/Km of 2.5×10(7)M(-1)×s(-1) for the physiologic CO2 hydration reaction. The inhibition constant value for this enzyme for 39 sulfonamide inhibitors was obtained...
December 12, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28005910/melioidosis-in-malaysia-a-review-of-case-reports
#8
Paul Vijay Kingsley, Mark Leader, Nandika Suranjith Nagodawithana, Meghan Tipre, Nalini Sathiakumar
BACKGROUND: Melioidosis is a tropical infectious disease associated with significant mortality due to early onset of sepsis. OBJECTIVE: We sought to review case reports of melioidosis from Malaysia. METHODS: We conducted a computerized search of literature resources including PubMed, OVID, Scopus, MEDLINE and the COCHRANE database to identify published case reports from 1975 to 2015. We abstracted information on clinical characteristics, exposure history, comorbid conditions, management and outcome...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28003338/a-predicted-cation-transporter-protein-bpss1228-is-involved-in-intracellular-behaviour-of-burkholderia-pseudomallei-in-a-human-lung-epithelial-cell-line-a549
#9
Teerasit Techawiwattanaboon, Sorujsiri Chareonsudjai
Burkholderia pseudomallei causes melioidosis, a potentially fatal infectious disease in tropical and subtropical countries worldwide. The intracellular behaviour of this pathogen in host cells has been reported to impact the severity of melioidosis, including the development of septicaemia, a consequence of pneumonia melioidosis. We previously identified a predicted cation transporter protein, BPSS1228, that participates in the transitional stage of this intracellular pathogen. For further analysis, in this study B...
December 2016: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/27994782/non-caseating-granulomatous-infective-spondylitis-melioidotic-spondylitis
#10
Justin Arockiaraj, Rajiv Karthik, Veena Jeyaraj, Rohit Amritanand, Venkatesh Krishnan, Kenny Samuel David, Gabriel David Sundararaj
STUDY DESIGN: Retrospective clinical analysis. PURPOSE: To delineate the clinical presentation of melioidosis in the spine and to create awareness among healthcare professionals, particularly spine surgeons, regarding the diagnosis and treatment of melioidotic spondylitis. OVERVIEW OF LITERATURE: Melioidosis is an emerging disease, particularly in developing countries, associated with a high mortality rate. Its causative pathogen, Burkholderia pseudomallei, has been labeled as a bio-terrorism agent...
December 2016: Asian Spine Journal
https://www.readbyqxmd.com/read/27994103/development-of-immunoassays-for-burkholderia-pseudomallei-typical-and-atypical-lipopolysaccharide-strain-typing
#11
Teerapat Nualnoi, Michael H Norris, Apichai Tuanyok, Paul J Brett, Mary N Burtnick, Paul S Keim, Erik W Settles, Christopher J Allender, David P AuCoin
Burkholderia pseudomallei is the causative agent of melioidosis, a severe infection endemic to many tropical regions. Lipopolysaccharide (LPS) is recognized as an important virulence factor used by B. pseudomallei. Isolates of B. pseudomallei have been shown to express one of four different types of LPS (typical LPS, atypical LPS types B and B2, and rough LPS) and in vitro studies have demonstrated that LPS types may impact disease severity. The association between LPS types and clinical manifestations, however, is still unknown, in part because an effective method for LPS type identification is not available...
December 19, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27992477/unravelling-the-molecular-epidemiology-and-genetic-diversity-among-burkholderia-pseudomallei-isolates-from-south-india-using-multi-locus-sequence-typing
#12
Chaitanya Tellapragada, Aayushi Kamthan, Tushar Shaw, Vandana Ke, Subodh Kumar, Vinod Bhat, Chiranjay Mukhopadhyay
There is a slow but steady rise in the case detection rates of melioidosis from various parts of the Indian sub-continent in the past two decades. However, the epidemiology of the disease in India and the surrounding South Asian countries remains far from well elucidated. Multi-locus sequence typing (MLST) is a useful epidemiological tool to study the genetic relatedness of bacterial isolates both with-in and across the countries. With this background, we studied the molecular epidemiology of 32 Burkholderia pseudomallei isolates (31 clinical and 1 soil isolate) obtained during 2006-2015 from various parts of south India using multi-locus sequencing typing and analysis...
2016: PloS One
https://www.readbyqxmd.com/read/27986727/burkholderia-humptydooensis-sp-nov-a-new-species-related-to-burkholderia-thailandensis-and-the-fifth-member-of-the-pseudomallei-complex
#13
Apichai Tuanyok, Mark Mayo, Holger Scholz, Carina M Hall, Christopher J Allender, Mirjam Kaestli, Jennifer Ginther, Senanu Spring-Pearson, Molly C Bollig, Joshua K Stone, Erik W Settles, Joseph D Busch, Lindsay Sidak-Loftis, Jason W Sahl, Astrid Thomas, Lisa Kreutzer, Enrico Georgi, Jay E Gee, Richard A Bowen, Jason T Ladner, Sean Lovett, Galina Koroleva, Gustavo Palacios, David M Wagner, Bart J Currie, Paul Keim
: During routine screening for endemic Burkholderia pseudomallei from water wells in northern Australia, Gram-staining-negative bacteria (strains MSMB43(T), MSMB121, and MSMB122) with a similar morphology and biochemical pattern to B. pseudomallei and B. thailandensis were co-isolated with B. pseudomallei on Ashdown's selective agar. To determine the exact taxonomic position of these strains and to distinguish them from B. pseudomallei and B. thailandensis, they were subjected to a series of phenotypic and molecular analyses...
December 16, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27981771/goodpasture-disease-as-a-consequence-of-melioidosis
#14
D Mackintosh, M Mantha, K Oliver
We describe a case of anti-glomerular basement membrane (GBM) antibody-mediated disease in association with concomitant Burkholderia pseudomallei (melioidosis) bacteraemia. The temporal profile of the illness and initial absence of circulating anti-GBM antibodies, in light of the subsequent definitive histological diagnosis of anti-GBM disease, makes this case interesting and unusual. Additionally, there have been no prior case reports suggesting melioidosis as a cause of biopsy-proven glomerulonephritis.
December 2016: Internal Medicine Journal
https://www.readbyqxmd.com/read/27973567/utility-of-a-lateral-flow-immunoassay-lfi-to-detect-burkholderia-pseudomallei-in-soil-samples
#15
Patpong Rongkard, Viriya Hantrakun, Sabine Dittrich, Prapaporn Srilohasin, Premjit Amornchai, Sayan Langla, Cherry Lim, Nicholas P J Day, David AuCoin, Vanaporn Wuthiekanun, Direk Limmathurotsakul
BACKGROUND: Culture is the gold standard for the detection of environmental B. pseudomallei. In general, soil specimens are cultured in enrichment broth for 2 days, and then the culture broth is streaked on an agar plate and incubated further for 7 days. However, identifying B. pseudomallei on the agar plates among other soil microbes requires expertise and experience. Here, we evaluate a lateral flow immunoassay (LFI) developed to detect B. pseudomallei capsular polysaccharide (CPS) in clinical samples as a tool to detect B...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27956524/thermoregulation-of-biofilm-formation-in-burkholderia-pseudomallei-is-disrupted-by-mutation-of-a-putative-diguanylate-cyclase
#16
Brooke A Plumley, Kevin H Martin, Grace I Borlee, Nicole L Marlenee, Mary N Burtnick, Paul J Brett, David P AuCoin, Richard A Bowen, Herbert P Schweizer, Bradley R Borlee
: Burkholderia pseudomallei, a Tier 1 select agent and the etiological agent of melioidosis, transitions from soil and aquatic environments to infect a variety of vertebrate and invertebrate hosts. During the transition from an environmental saprophyte to a mammalian pathogen, B. pseudomallei encounters and responds to rapidly changing environmental conditions. Environmental sensing systems that control cellular levels of cyclic di-GMP promote pathogen survival in diverse environments...
December 12, 2016: Journal of Bacteriology
https://www.readbyqxmd.com/read/27941991/in-vivo-distribution-and-clearance-of-purified-capsular-polysaccharide-from-burkholderia-pseudomallei-in-a-murine-model
#17
Teerapat Nualnoi, Adam Kirosingh, Sujata G Pandit, Peter Thorkildson, Paul J Brett, Mary N Burtnick, David P AuCoin
Burkholderia pseudomallei is the causative agent of melioidosis, a severe infection prominent in northern Australia and Southeast Asia. The "gold standard" for melioidosis diagnosis is bacterial isolation, which takes several days to complete. The resulting delay in diagnosis leads to delayed treatments, which could result in death. In an attempt to develop better methods for early diagnosis of melioidosis, B. pseudomallei capsular polysaccharide (CPS) was identified as an important diagnostic biomarker. A rapid lateral flow immunoassay utilizing CPS-specific monoclonal antibody was developed and tested in endemic regions worldwide...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27934296/identification-of-candidate-host-cell-factors-required-for-actin-based-motility-of-burkholderia-pseudomallei
#18
Niramol Jitprasutwit, Nurhamimah Zainal-Abidin, Charles Vander Broek, Dominic Kurian, Sunee Korbsrisate, Mark P Stevens, Joanne M Stevens
Intracellular actin-based motility of the melioidosis pathogen Burkholderia pseudomallei requires the bacterial factor BimA. Located at one pole of the bacterium, BimA recruits and polymerizes cellular actin to promote bacterial motility within and between cells. Here, we describe an affinity approach coupled with mass spectrometry to identify cellular proteins recruited to BimA-expressing bacteria under conditions that promote actin polymerization. We identified a group of cellular proteins that are recruited to the B...
December 2, 2016: Journal of Proteome Research
https://www.readbyqxmd.com/read/27914949/anion-inhibition-profiles-of-the-%C3%AE-carbonic-anhydrase-from-the-pathogenic-bacterium-burkholderia-pseudomallei-responsible-of-melioidosis-and-highly-drug-resistant-to-common-antibiotics
#19
Sonia Del Prete, Daniela Vullo, Pietro Di Fonzo, Sameh M Osman, Zeid AlOthman, Claudiu T Supuran, Clemente Capasso
Burkholderia pseudomallei is a Gram-negative saprophytic bacterium responsible of melioidosis, an endemic disease of tropical and sub-tropical regions of the world. A recombinant γ-CA (BpsγCA) identified in the genome of this bacterium was cloned and purified. Its catalytic activity and anion inhibition profiles were investigated. The enzyme was an efficient catalyst for the CO2 hydration showing a kcat of 5.3×10(5)s(-1) and kcat/Km of 2.5×10(7)M(-1)×s(-1). The best BpsγCA inhibitors were sulfamide, sulfamic acid, phenylboronic acid and phenylarsonic acid, which showed KI in the range of 49-83μM (these inhibitors showed millimolar inhibition constant against hCA II), followed by diethyldithiocarbamate, selenate, tellurate, perrhenate, selenocyanate, trithiocarbonate, tetraborato, pyrophosphate, stannate, carbonate, bicarbonate, azide, cyanide, thiocyanate and cyanate with KIs in the range of 0...
January 15, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27898739/environmental-free-living-amoebae-isolated-from-soil-in-khon-kaen-thailand-antagonize-burkholderia-pseudomallei
#20
Parumon Noinarin, Pisit Chareonsudjai, Pinich Wangsomnuk, Surasak Wongratanacheewin, Sorujsiri Chareonsudjai
Presence of Burkholderia pseudomallei in soil and water is correlated with endemicity of melioidosis in Southeast Asia and northern Australia. Several biological and physico-chemical factors have been shown to influence persistence of B. pseudomallei in the environment of endemic areas. This study was the first to evaluate the interaction of B. pseudomallei with soil amoebae isolated from B. pseudomallei-positive soil site in Khon Kaen, Thailand. Four species of amoebae, Paravahlkampfia ustiana, Acanthamoeba sp...
2016: PloS One
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