Abstract:
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. pseudomallei strain 1106a lawns. Of the 86 soil samples collected from northeastern Thailand, B. pseudomallei was cultured from 23 (26.7%) samples; no phage capable of infecting B. pseudomallei was detected in these samples. In contrast, phages capable of infecting B. pseudomallei, but no bacteria, were present in 10 (11.6%) samples. B. pseudomallei and their phages were co-isolated from only 3 (3.5%) of soil samples. Since phage capable of infecting B. pseudomallei could not have appeared in the samples without the prior presence of bacteria, or exposure to bacteria nearby, our data suggest that all phage-positive/bacteria-negative samples have had B. pseudomallei in or in a close proximity to them. Taken together, these findings indicate that the presence of phages may influence the success of B. pseudomallei isolation. Transmission electron microscopy revealed that the isolated phages are podoviruses. The temperate phages residing in soil-isolated strains of B. pseudomallei that were resistant to the dominant soil borne phages could be induced by mitomycin C. These induced-temperate phages were closely related, but not identical, to the more dominant soil-isolated phage type. CONCLUSION/SIGNIFICANCE:The presence of podoviruses capable of infecting B. pseudomallei may affect the success of the pathogen isolation from the soil. The currently used culture-based methods of B. pseudomallei isolation appear to under-estimate the bacterial abundance. The detection of phage capable of infecting B. pseudomallei from environmental samples could be a useful preliminary test to indicate the likely presence of B. pseudomallei in environmental samples.
journal_name
PLoS Negl Trop Disjournal_title
PLoS neglected tropical diseasesauthors
Withatanung P,Chantratita N,Muangsombut V,Saiprom N,Lertmemongkolchai G,Klumpp J,Clokie MR,Galyov EE,Korbsrisate Sdoi
10.1371/journal.pntd.0005005subject
Has Abstractpub_date
2016-09-26 00:00:00pages
e0005005issue
9eissn
1935-2727issn
1935-2735pii
PNTD-D-16-00504journal_volume
10pub_type
杂志文章abstract::Schistosomiasis is an important neglected tropical disease caused by digenean helminth parasites of the genus Schistosoma. Schistosomes are unusual in that they are dioecious and the adult worms live in the blood system. MicroRNAs play crucial roles during gene regulation and are likely to be important in sex differen...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0002402
更新日期:2013-09-12 00:00:00
abstract::Due to the large geographical overlap of populations exposed to Zika virus (ZIKV) and human immunodeficiency virus (HIV), understanding the disease pathogenesis of co-infection is urgently needed. This warrants the development of an animal model for HIV-ZIKV co-infection. In this study, we used adult non-pregnant maca...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0006811
更新日期:2018-10-25 00:00:00
abstract:BACKGROUND:Visceral leishmaniasis (VL or kala azar) is the most serious form of human leishmaniasis, responsible for over 20,000 deaths annually, and post kala azar dermal leishmaniasis (PKDL) is a stigmatizing skin condition that often occurs in patients after successful treatment for VL. Lack of effective or appropri...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0005527
更新日期:2017-05-12 00:00:00
abstract:BACKGROUND:Human African trypanosomiasis is a severely neglected vector-borne disease that is always fatal if untreated. In Tanzania it is highly focalised and of major socio-economic and public health importance in affected communities. OBJECTIVES:This study aimed to estimate the public health burden of rhodesiense H...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0000868
更新日期:2010-11-02 00:00:00
abstract::Schistosomes are parasitic platyhelminths that currently infect over 200 million people globally. The parasites can live for years in a putatively hostile environment - the blood of vertebrates. We have hypothesized that the unusual schistosome tegument (outer-covering) plays a role in protecting parasites in the bloo...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0001011
更新日期:2011-04-05 00:00:00
abstract:BACKGROUND:Human lice, Pediculus humanus, are obligate blood-sucking parasites. Body lice, Pediculus h. humanus, occur in two divergent mitochondrial clades (A and D) each exhibiting a particular geographic distribution. Currently, the body louse is recognized as the only vector for louse-borne diseases. In this study,...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0006397
更新日期:2018-04-17 00:00:00
abstract::[This corrects the article DOI: 10.1371/journal.pntd.0006212.]. ...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章,已发布勘误
doi:10.1371/journal.pntd.0007166
更新日期:2019-01-31 00:00:00
abstract::In French Guiana, from 1984 to 2011, 14 animal rabies cases and 1 human rabies case (2008) were diagnosed. In January 2011, vampire-bat attacks occurred in 2 isolated villages. In mid-January, a medical team from the Cayenne Centre for Anti-Rabies Treatment visited the sites to manage individuals potentially exposed t...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0002258
更新日期:2013-06-27 00:00:00
abstract::[This corrects the article DOI: 10.1371/journal.pntd.0007025.]. ...
journal_title:PLoS neglected tropical diseases
pub_type: 已发布勘误
doi:10.1371/journal.pntd.0008725
更新日期:2020-09-01 00:00:00
abstract:BACKGROUND:Aminoacyl tRNA synthetases are central enzymes required for protein synthesis. These enzymes are the known drug targets in bacteria and fungi. Here, we for the first time report the functional characterization of threonyl tRNA synthetase (LdThrRS) of Leishmania donovani, a protozoan parasite, the primary cau...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0006575
更新日期:2018-06-13 00:00:00
abstract:BACKGROUND:Singapore experiences endemic dengue, with 2013 being the largest outbreak year known to date, culminating in 22,170 cases. Given the limited resources available, and that vector control is the key approach for prevention in Singapore, it is important that public health professionals know where resources sho...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0006587
更新日期:2018-06-18 00:00:00
abstract:BACKGROUND:The immune response in the skin of dogs infected with Leishmania infantum is poorly understood, and limited studies have described the immunopathological profile with regard to distinct levels of tissue parasitism and the clinical progression of canine visceral leishmaniasis (CVL). METHODOLOGY/PRINCIPAL FIN...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0001566
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Most of the Leishmania genome is reported to be constitutively expressed during the life cycle of the parasite, with a few regulated genes. Inter-species comparative transcriptomics evidenced a low number of species-specific differences related to differentially distributed genes or the differential regulati...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0001021
更新日期:2011-05-10 00:00:00
abstract::Apicomplexa tick-borne hemoparasites, including Babesia bovis, Babesia microti, and Theileria equi are responsible for bovine and human babesiosis and equine theileriosis, respectively. These parasites of vast medical, epidemiological, and economic impact have complex life cycles in their vertebrate and tick hosts. La...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章,评审
doi:10.1371/journal.pntd.0004983
更新日期:2016-11-10 00:00:00
abstract: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 COCHRA...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章,评审
doi:10.1371/journal.pntd.0005182
更新日期:2016-12-22 00:00:00
abstract:BACKGROUND:Oncomelania hupensis is the unique intermediate host of Schistosoma japonicum, which causes schistosomiasis endemic in the Far East, and especially in mainland China. O. hupensis largely determines the parasite's geographical range. How O. hupensis's genetic diversity is distributed geographically in mainlan...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0000611
更新日期:2010-03-02 00:00:00
abstract::[This corrects the article DOI: 10.1371/journal.pntd.0004223.]. ...
journal_title:PLoS neglected tropical diseases
pub_type: 已发布勘误
doi:10.1371/journal.pntd.0004394
更新日期:2016-01-13 00:00:00
abstract:BACKGROUND:Melioidosis, caused by the Gram-negative bacterium Burkholderia pseudomallei, is an emerging cause of pneumonia-derived sepsis in the tropics. The gut microbiota supports local mucosal immunity and is increasingly recognized as a protective mediator in host defenses against systemic infection. Here, we aimed...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0005548
更新日期:2017-04-19 00:00:00
abstract:BACKGROUND:Leptospirosis, a spirochaetal zoonotic disease, is the cause of epidemics associated with high mortality in urban slum communities. Infection with pathogenic Leptospira occurs during environmental exposures and is traditionally associated with occupational risk activities. However, slum inhabitants reside in...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0000154
更新日期:2008-01-30 00:00:00
abstract:BACKGROUND:The dengue virus is endemic in many low- and middle-income countries. In Burkina Faso, the proportion of fevers that could be due to dengue is growing. In 2013, a dengue epidemic spread there, followed by other seasonal outbreaks. Dengue is often confused with malaria, and health workers are not trained to d...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0008305
更新日期:2020-06-10 00:00:00
abstract:BACKGROUND:Although antibody responses to dengue virus (DENV) in naturally infected individuals have been extensively studied, the functionality of DENV specific memory T cell responses in relation to clinical disease severity is incompletely understood. METHODOLOGY/PRINCIPAL FINDINGS:Using ex vivo IFNγ ELISpot assays...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0003673
更新日期:2015-04-13 00:00:00
abstract:BACKGROUND:The liver fluke Opisthorchis viverrini is classified as a class I carcinogen due to the association between cholangiocarcinoma and chronic O. viverrini infection. During its feeding activity within the bile duct, the parasite secretes several cathepsin F cysteine proteases that may induce or contribute to th...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0000398
更新日期:2009-01-01 00:00:00
abstract::Improved understanding of the differential diagnosis of endemic treponematoses is needed to inform clinical practice and to ensure the best outcome for a new global initiative for the eradication of yaws, bejel, and pinta. Traditionally, the human treponematoses have been differentiated based upon their clinical manif...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章,评审
doi:10.1371/journal.pntd.0002283
更新日期:2013-10-24 00:00:00
abstract::The vast burden of cryptococcal meningitis occurs in immunosuppressed patients, driven by HIV, and is caused by Cryptococcus neoformans var. grubii. We previously reported cryptococcal meningitis in Vietnam arising atypically in HIV uninfected, apparently immunocompetent patients, caused by a single amplified fragment...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0005628
更新日期:2017-06-14 00:00:00
abstract::Intracerebral microhemorrhages (CMHs) are small foci of hemorrhages in the cerebrum. Acute infections induced by some intracellular pathogens, including rickettsia, can result in CMHs. Annexin a2 (ANXA2) has been documented to play a functional role during intracellular bacterial adhesion. Here we report that ANXA2-kn...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0007960
更新日期:2020-07-20 00:00:00
abstract::Zika virus (ZIKV) has emerged since 2013 as a significant global human health threat following outbreaks in the Pacific Islands and rapid spread throughout South and Central America. Severe congenital and neurological sequelae have been linked to ZIKV infections. Assessing the ability of common mosquito species to tra...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0006524
更新日期:2018-06-21 00:00:00
abstract::Eumycetoma (mycotic mycetoma) is the fungal form of mycetoma, a subcutaneous infection occurring in individuals living in endemic areas of the disease. The Sudan is hyperendemic for mycetoma, with the highest incidence being reported from Gezira State, Central Sudan. The present study was conducted at the Gezira Mycet...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0008420
更新日期:2020-07-30 00:00:00
abstract:OBJECTIVES:To assess if a probabilistic model could be used to estimate the combined prevalence of infection with any species of intestinal nematode worm when only the separate prevalence of each species is reported, and to estimate the extent to which simply taking the highest individual species prevalence underestima...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0000655
更新日期:2010-04-13 00:00:00
abstract::The enteric protozoa Entamoeba histolytica is the causative agent of amebiasis, which is one of the most common parasitic diseases in developed and developing countries. Entamoeba nuttalli is the genetically closest species to E. histolytica in current phylogenetic analyses of Entamoeba species, and is prevalent in wi...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0007923
更新日期:2019-12-05 00:00:00
abstract::Entamoeba histolytica, a microaerophilic enteric protozoan parasite, causes amebic colitis and extra intestinal abscesses in millions of inhabitants of endemic areas. Trophozoites of E. histolytica are exposed to a variety of reactive oxygen and nitrogen species during infection. Since E. histolytica lacks key compone...
journal_title:PLoS neglected tropical diseases
pub_type: 杂志文章
doi:10.1371/journal.pntd.0001831
更新日期:2012-01-01 00:00:00