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PLoS Neglected Tropical Diseases

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https://www.readbyqxmd.com/read/29145396/detection-of-relapsing-fever-borrelia-spp-bartonella-spp-and-anaplasmataceae-bacteria-in-argasid-ticks-in-algeria
#1
Ismail Lafri, Basma El Hamzaoui, Idir Bitam, Hamza Leulmi, Reda Lalout, Oleg Mediannikov, Mohamed Chergui, Mohamed Karakellah, Didier Raoult, Philippe Parola
BACKGROUND: Argasid ticks (soft ticks) are blood-feeding arthropods that can parasitize rodents, birds, humans, livestock and companion animals. Ticks of the Ornithodoros genus are known to be vectors of relapsing fever borreliosis in humans. In Algeria, little is known about relapsing fever borreliosis and other bacterial pathogens transmitted by argasid ticks. METHODOLOGY/PRINCIPAL FINDINGS: Between May 2013 and October 2015, we investigated the presence of soft ticks in 20 rodent burrows, 10 yellow-legged gull (Larus michahellis) nests and animal shelters in six locations in two different bioclimatic zones in Algeria...
November 16, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29145392/conservation-of-a-microrna-cluster-in-parasitic-nematodes-and-profiling-of-mirnas-in-excretory-secretory-products-and-microvesicles-of-haemonchus-contortus
#2
Henry Y Gu, Neil D Marks, Alan D Winter, William Weir, Thomas Tzelos, Tom N McNeilly, Collette Britton, Eileen Devaney
microRNAs are small non-coding RNAs that are important regulators of gene expression in a range of animals, including nematodes. We have analysed a cluster of four miRNAs from the pathogenic nematode species Haemonchus contortus that are closely linked in the genome. We find that the cluster is conserved only in clade V parasitic nematodes and in some ascarids, but not in other clade III species nor in clade V free-living nematodes. Members of the cluster are present in parasite excretory-secretory products and can be detected in the abomasum and draining lymph nodes of infected sheep, indicating their release in vitro and in vivo...
November 16, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29131859/development-and-validation-of-an-immunoperoxidase-antigen-detection-test-for-improved-diagnosis-of-rabies-in-indonesia
#3
Ibnu Rahmadane, Andrea F Certoma, Grantley R Peck, Yul Fitria, Jean Payne, Axel Colling, Brian J Shiell, Gary Beddome, Susanne Wilson, Meng Yu, Chris Morrissy, Wojtek P Michalski, John Bingham, Ian A Gardner, John D Allen
Rabies continues to pose a significant threat to human and animal health in regions of Indonesia. Indonesia has an extensive network of veterinary diagnostic laboratories and the 8 National laboratories are equipped to undertake diagnostic testing for rabies using the commercially-procured direct fluorescent antibody test (FAT), which is considered the reference (gold standard) test. However, many of the Indonesian Provincial diagnostic laboratories do not have a fluorescence microscope required to undertake the FAT...
November 13, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29131822/impact-of-the-ebola-outbreak-on-trypanosoma-brucei-gambiense-infection-medical-activities-in-coastal-guinea-2014-2015-a-retrospective-analysis-from-the-guinean-national-human-african-trypanosomiasis-control-program
#4
Mariame Camara, Eric Ouattara, Alexandre Duvignaud, René Migliani, Oumou Camara, Mamadou Leno, Philippe Solano, Bruno Bucheton, Mamadou Camara, Denis Malvy
BACKGROUND: The 2014-2015 Ebola outbreak massively hit Guinea. The coastal districts of Boffa, Dubreka and Forecariah, three major foci of Human African Trypanosomiasis (HAT), were particularly affected. We aimed to assess the impact of this epidemic on sleeping sickness screening and caring activities. METHODOLOGY/PRINCIPAL FINDINGS: We used preexisting data from the Guinean sleeping sickness control program, collected between 2012 and 2015. We described monthly: the number of persons (i) screened actively; (ii) or passively; (iii) treated for HAT; (iv) attending post-treatment follow-up visits...
November 13, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29131820/rapid-clearance-of-schistosoma-mansoni-circulating-cathodic-antigen-after-treatment-shown-by-urine-strip-tests-in-a-ugandan-fishing-community-relevance-for-monitoring-treatment-efficacy-and-re-infection
#5
Anna O Kildemoes, Birgitte J Vennervald, Edridah M Tukahebwa, Narcis B Kabatereine, Pascal Magnussen, Claudia J de Dood, André M Deelder, Shona Wilson, Govert J van Dam
ClinicalTrials.gov NCT00215267.
November 13, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29125849/effect-of-water-sanitation-and-hygiene-interventions-on-active-trachoma-in-north-and-south-wollo-zones-of-amhara-region-ethiopia-a-quasi-experimental-study
#6
Beselam Tadesse, Alemayehu Worku, Abera Kumie, Solomon Abebe Yimer
BACKGROUND: Trachoma is chronic kerato conjunctivitis, which is caused by repeated infection with Chlamydia trachomatis bacterium. It is hyper endemic in many rural areas of Ethiopia. The objective of this study was to measure the effect of water, sanitation and hygiene interventions on active trachoma in selected woredas of North and South Wollo zones of Amhara Region, Ethiopia. METHODOLOGY: A community based quasi-experimental study was conducted from October 2014 to December 2015 among children aged 1-8 years at baseline and among one year older same children after intervention...
November 10, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29125839/csseverin-inhibits-apoptosis-through-mitochondria-mediated-pathways-triggered-by-ca2-dyshomeostasis-in-hepatocarcinoma-plc-cells
#7
Mengchen Shi, Lina Zhou, Lu Zhao, Mei Shang, Tongtong He, Zeli Tang, Hengchang Sun, Pengli Ren, Zhipeng Lin, Tingjin Chen, Jinyun Yu, Jin Xu, Xinbing Yu, Yan Huang
BACKGROUND: Numerous experimental and epidemiological studies have demonstrated a link between Clonorchis sinensis (C. sinensis) infestation and cholangiocarcinoma (CCA) as well as hepatocellular carcinoma (HCC). The underlying molecular mechanism involved in the malignancy of CCA and HCC has not yet been addressed. Csseverin, a component of the excretory/secretory products of C. sinensis (CsESPs), was confirmed to cause obvious apoptotic inhibition in the human HCC cell line PLC. However, the antiapoptotic mechanism is unclear...
November 10, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29121659/polyclonal-antibodies-for-the-detection-of-trypanosoma-cruzi-circulating-antigens
#8
Edith S Málaga-Machaca, Alessandra Romero-Ramirez, Robert H Gilman, Sofía Astupiña-Figueroa, Noelia Angulo, Alejandro Florentini, Cinthya J Lovon-Luque, Remo A Gonza, Ada Del Carpio-Sanz, Inés Cabello, Rosina Camargo, Fernando Recuenco, Liliam A Barrueta-Soria, Manuela R Verastegui, Maritza Calderon, Holger Mayta
BACKGROUND: Detection of Trypanosoma cruzi antigens in clinical samples is considered an important diagnostic tool for Chagas disease. The production and use of polyclonal antibodies may contribute to an increase in the sensitivity of immunodiagnosis of Chagas disease. METHODOLOGY/PRINCIPAL FINDINGS: Polyclonal antibodies were raised in alpacas, rabbits, and hens immunized with trypomastigote excreted-secreted antigen, membrane proteins, trypomastigote lysate antigen and recombinant 1F8 to produce polyclonal antibodies...
November 9, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29117212/quantitative-label-free-proteomic-analysis-of-human-urine-to-identify-novel-candidate-protein-biomarkers-for-schistosomiasis
#9
Olugbenga Samson Onile, Bridget Calder, Nelson C Soares, Chiaka I Anumudu, Jonathan M Blackburn
BACKGROUND: Schistosomiasis is a chronic neglected tropical disease that is characterized by continued inflammatory challenges to the exposed population and it has been established as a possible risk factor in the aetiology of bladder cancer. Improved diagnosis of schistosomiasis and its associated pathology is possible through mass spectrometry to identify biomarkers among the infected population, which will influence early detection of the disease and its subtle morbidity. METHODOLOGY: A high-throughput proteomic approach was used to analyse human urine samples for 49 volunteers from Eggua, a schistosomiasis endemic community in South-West, Nigeria...
November 8, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29117195/biological-and-phylogenetic-characteristics-of-west-african-lineages-of-west-nile-virus
#10
Gamou Fall, Nicholas Di Paola, Martin Faye, Moussa Dia, Caio César de Melo Freire, Cheikh Loucoubar, Paolo Marinho de Andrade Zanotto, Ousmane Faye, Amadou Alpha Sall
The West Nile virus (WNV), isolated in 1937, is an arbovirus (arthropod-borne virus) that infects thousands of people each year. Despite its burden on global health, little is known about the virus' biological and evolutionary dynamics. As several lineages are endemic in West Africa, we obtained the complete polyprotein sequence from three isolates from the early 1990s, each representing a different lineage. We then investigated differences in growth behavior and pathogenicity for four distinct West African lineages in arthropod (Ap61) and primate (Vero) cell lines, and in mice...
November 8, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29117180/the-additional-benefit-of-residual-spraying-and-insecticide-treated-curtains-for-dengue-control-over-current-best-practice-in-cuba-evaluation-of-disease-incidence-in-a-cluster-randomized-trial-in-a-low-burden-setting-with-intensive-routine-control
#11
Maria Eugenia Toledo, Veerle Vanlerberghe, Julio Popa Rosales, Mayelin Mirabal, Pedro Cabrera, Viviana Fonseca, Tania Gómez Padrón, Mirtha Pérez Menzies, Domingo Montada, Patrick Van der Stuyft
BACKGROUND: Aedes control interventions are considered the cornerstone of dengue control programmes, but there is scarce evidence on their effect on disease. We set-up a cluster randomized controlled trial in Santiago de Cuba to evaluate the entomological and epidemiological effectiveness of periodical intra- and peri-domiciliary residual insecticide (deltamethrin) treatment (RIT) and long lasting insecticide treated curtains (ITC). METHODOLOGY/PRINCIPAL FINDINGS: Sixty three clusters (around 250 households each) were randomly allocated to two intervention (RIT and ITC) and one control arm...
November 8, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29108026/status-of-soil-transmitted-helminth-infections-in-schoolchildren-in-laguna-province-the-philippines-determined-by-parasitological-and-molecular-diagnostic-techniques
#12
Mary Lorraine S Mationg, Catherine A Gordon, Veronica L Tallo, Remigio M Olveda, Portia P Alday, Mark Donald C Reñosa, Franziska A Bieri, Gail M Williams, Archie C A Clements, Peter Steinmann, Kate Halton, Yuesheng Li, Donald P McManus, Darren J Gray
BACKGROUND: Soil-transmitted helminths (STH) are the most common parasitic infections in impoverished communities, particularly among children. Current STH control is through school-based mass drug administration (MDA), which in the Philippines is done twice annually. As expected, MDA has decreased the intensity and prevalence of STH over time. As a result, the common Kato Katz (KK) thick smear method of detecting STH is less effective because it lacks sensitivity in low intensity infections, making it difficult to measure the impact of deworming programs...
November 6, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29108023/health-seeking-behavior-following-snakebites-in-sri-lanka-results-of-an-island-wide-community-based-survey
#13
Dileepa Senajith Ediriweera, Anuradhani Kasturiratne, Arunasalam Pathmeswaran, Nipul Kithsiri Gunawardena, Shaluka Francis Jayamanne, David Griffiths Lalloo, Hithanadura Janaka de Silva
INTRODUCTION: Sri Lanka has a population of 21 million and about 80,000 snakebites occur annually. However, there are limited data on health seeking behavior following bites. We investigated the effects of snakebite and envenoming on health seeking behavior in Sri Lanka. METHODS: In a community-based island-wide survey conducted in Sri Lanka 44,136 households were sampled using a multistage cluster sampling method. An individual who reported experiencing a snakebite within the preceding 12 months was considered a case...
November 6, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29108009/zika-virus-displacement-by-a-chikungunya-outbreak-in-recife-brazil
#14
Tereza Magalhaes, Cynthia Braga, Marli T Cordeiro, Andre L S Oliveira, Priscila M S Castanha, Ana Paula R Maciel, Nathalia M L Amancio, Pollyanne N Gouveia, Valter J Peixoto-da-Silva, Thaciana F L Peixoto, Helena Britto, Priscilla V Lima, Andreza R S Lima, Kerstin D Rosenberger, Thomas Jaenisch, Ernesto T A Marques
BACKGROUND: Several arboviruses, including dengue virus (DENV), Zika virus (ZIKV) and chikungunya virus (CHIKV), transmitted by Aedes mosquitoes, circulate in northeast Brazil. Diseases caused by these viruses are of great public health relevance, however, their epidemiological features in areas where the three viruses co-circulate are scarce. Here, we present analyses of molecular and serological diagnostics in a prospective study of acute febrile patients recruited from May 2015 to May 2016 in Recife, Brazil...
November 6, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29108003/schistosoma-other-helminth-infections-and-associated-risk-factors-in-preschool-aged-children-in-urban-tanzania
#15
Khadija Said, Jerry Hella, Stefanie Knopp, Tatu Nassoro, Neema Shija, Fatma Aziz, Francis Mhimbira, Christian Schindler, Upendo Mwingira, Anna M Mandalakas, Karim Manji, Marcel Tanner, Jürg Utzinger, Lukas Fenner
BACKGROUND: Despite the high prevalence of helminth infections among preschool-aged children, control programs in sub-Saharan countries primarily focus on school-aged populations. We assessed the prevalence of helminth infections and determined risk factors for infection among preschool-aged children in the urban setting of Dar es Salaam, Tanzania. METHODOLOGY: Starting in October 2015, we conducted a 12-month prospective study among tuberculosis (TB)-exposed children under the age of 5 years and unexposed controls from neighboring households...
November 6, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29084217/wolbachia-effects-on-rift-valley-fever-virus-infection-in-culex-tarsalis-mosquitoes
#16
Brittany L Dodson, Elizabeth S Andrews, Michael J Turell, Jason L Rasgon
Innovative tools are needed to alleviate the burden of mosquito-borne diseases, and strategies that target the pathogen are being considered. A possible tactic is the use of Wolbachia, a maternally inherited, endosymbiotic bacterium that can (but does not always) suppress diverse pathogens when introduced to naive mosquito species. We investigated effects of somatic Wolbachia (strain wAlbB) infection on Rift Valley fever virus (RVFV) in Culex tarsalis mosquitoes. When compared to Wolbachia-uninfected mosquitoes, there was no significant effect of Wolbachia infection on RVFV infection, dissemination, or transmission frequencies, nor on viral body or saliva titers...
October 30, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29077717/a-polymorphism-in-the-haptoglobin-haptoglobin-related-protein-locus-is-associated-with-risk-of-human-sleeping-sickness-within-cameroonian-populations
#17
Elvis Ofon, Harry Noyes, Julius Mulindwa, Hamidou Ilboudo, Martin Simuunza, Vincent Ebo'o, Flobert Njiokou, Mathurin Koffi, Bruno Bucheton, Pythagore Fogue, Christiane Hertz-Fowler, Annette MacLeod, Gustave Simo
BACKGROUND: Human African Trypanosomiasis (HAT) is a neglected disease targeted for elimination as a public health problem by 2020. Elimination requires a better understanding of the epidemiology and clinical evolution of HAT. In addition to the classical clinical evolution of HAT, asymptomatic carriers and spontaneous cure have been reported in West Africa. A genetic component to human susceptibility to HAT has been suggested to explain these newly observed responses to infection. In order to test for genetic associations with infection response, genetic polymorphism in 17 genes were tested (APOL1, IL1B, IL4, IL4R, IL6, IL8, IL12B, IL12RB1, IL10, TNFA, INFG, MIF, HLA-G, HLA-A, HP, HPR and CFH)...
October 27, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29073150/l-arginine-availability-and-arginase-activity-characterization-of-amino-acid-permease-3-in-leishmania-amazonensis
#18
Juliana Ide Aoki, Sandra Marcia Muxel, Ricardo Andrade Zampieri, Stephanie Maia Acuña, Juliane Cristina Ribeiro Fernandes, Rubia Heloisa Vanderlinde, Maria Carmen Oliveira de Pinho Sales, Lucile Maria Floeter-Winter
BACKGROUND: Leishmania uses the amino acid L-arginine as a substrate for arginase, enzyme that produces urea and ornithine, last precursor of polyamine pathway. This pathway is used by the parasite to replicate and it is essential to establish the infection in the mammalian host. L-arginine is not synthesized by the parasite, so its uptake occurs through the amino acid permease 3 (AAP3). AAP3 is codified by two copies genes (5.1 and 4.7 copies), organized in tandem in the parasite genome...
October 26, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29145405/drivers-of-house-invasion-by-sylvatic-chagas-disease-vectors-in-the-amazon-cerrado-transition-a-multi-year-state-wide-assessment-of-municipality-aggregated-surveillance-data
#19
Raíssa N Brito, David E Gorla, Liléia Diotaiuti, Anália C F Gomes, Rita C M Souza, Fernando Abad-Franch
BACKGROUND: Insecticide spraying efficiently controls house infestation by triatomine bugs, the vectors of Trypanosoma cruzi. The strategy, however, is ineffective against sylvatic triatomines, which can transmit Chagas disease by invading (without colonizing) man-made structures. Despite growing awareness of the relevance of these transmission dynamics, the drivers of house invasion by sylvatic triatomines remain poorly understood. METHODS/FINDINGS: About 12,000 sylvatic triatomines were caught during routine surveillance in houses of Tocantins state, Brazil, in 2005-2013...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29145403/us-gulf-coast-states-the-rise-of-neglected-tropical-diseases-in-flyover-nation
#20
Peter J Hotez, Sheila Jackson Lee
No abstract text is available yet for this article.
November 2017: PLoS Neglected Tropical Diseases
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