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https://www.readbyqxmd.com/read/28932617/visceral-leishmaniasis-malaria-coinfection-and-their-associated-factors-in-patients-attending-metema-hospital-northwest-ethiopia-suggestion-for-integrated-vector-management
#1
Getachew Ferede, Ermias Diro, Sisay Getie, Gebeyaw Getnet, Yegnasew Takele, Anteneh Amsalu, Yitayih Wondimeneh
BACKGROUND: Despite high prevalence of visceral leishmaniasis and malaria in the study area, their coinfection remains unknown. Therefore, this study was aimed to document VL-malaria coinfections and their associated factors. METHODS: A cross-sectional study was conducted among clinical suspected VL patients attending Metema hospital, Northwest Ethiopia, from January 2014 to June 2014. Blood sample was tested by rk39 antigen-based DiaMed IT-Leish dipstick and Giemsa stain microscopic examination of thick and thin blood smears for malaria detection was performed...
2017: Malaria Research and Treatment
https://www.readbyqxmd.com/read/28929395/-asymptomatic-plasmodium-falciparum-and-vivax-infection-in-the-neighborhood-of-blondin-saint-georges-de-l-oyapock-district-french-guiana
#2
E Mosnier, M Douine, L Epelboin, S Pelleau, V Pommier de Santi, Y Dangel, M Demar, R Mutricy, B Guarmit, M Nacher, P Brousse, D Davy, F Djossou, L Musset
Optimized elimination strategies are needed to control transmission of malaria. As part of an elimination campaign, active detection of asymptomatic Plasmodium carriers by highly sensitive methods is deemed necessary. Asymptomatic carriage leads to complex scientific, ethical, and operational issues regarding individual or collective detection and treatment. To address this issue, a crosssectional study was carried out in French Guiana to determine the prevalence of asymptomatic Plasmodium carriage during an inter-epidemic season in the whole population of a neighborhood of Saint-Georges-de-l'Oyapock, along the Brazilian border...
September 19, 2017: Bulletin de la Société de Pathologie Exotique
https://www.readbyqxmd.com/read/28929019/heterologous-expression-of-plasmodium-vivax-apical-membrane-antigen-1-pvama1-for-binding-peptide-selection
#3
Ching Hoong Chew, Yvonne Ai Lian Lim, Kek Heng Chua
BACKGROUND: Plasmodium is an obligate intracellular parasite. Apical membrane antigen 1 (AMA1) is the most prominent and well characterized malarial surface antigen that is essential for parasite-host cell invasion, i.e., for sporozoite to invade and replicate within hepatocytes in the liver stage and merozoite to penetrate and replicate within erythrocytes in the blood stage. AMA1 has long served as a potent antimalarial drug target and is a pivotal vaccine candidate. A good understanding of the structure and molecular function of this Plasmodium protein, particularly its involvement in host-cell adhesion and invasion, is of great interest and hence it offers an attractive target for the development of novel therapeutics...
2017: PeerJ
https://www.readbyqxmd.com/read/28927849/metabolome-wide-association-study-of-peripheral-parasitemia-in-plasmodium-vivax-malaria
#4
Luiz Gustavo Gardinassi, Regina Joice Cordy, Marcus V G Lacerda, Jorge L Salinas, Wuelton M Monteiro, Gisely C Melo, André M Siqueira, Fernando F Val, ViLinh Tran, Dean P Jones, Mary R Galinski, Shuzhao Li
BACKGROUND: Plasmodium vivax is one of the leading causes of malaria worldwide. Infections with this parasite cause diverse clinical manifestations, and recent studies revealed that infections with P. vivax can result in severe and fatal disease. Despite these facts, biological traits of the host response and parasite metabolism during P. vivax malaria are still largely underexplored. Parasitemia is clearly related to progression and severity of malaria caused by P. falciparum, however the effects of parasitemia during infections with P...
September 6, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28927422/proximity-to-vector-breeding-site-and-risk-of-plasmodium-vivax-infection-a-prospective-cohort-study-in-rural-ethiopia
#5
Alexander Nissen, Jackie Cook, Eskindir Loha, Bernt Lindtjørn
BACKGROUND: Despite falling incidence and mortality since the turn of the century, malaria remains an important global health challenge. In the future fight against malaria, greater emphasis will have to be placed on understanding and addressing malaria caused by the Plasmodium vivax parasite. Unfortunately, due to years of neglect and underfunding, there are currently many gaps in knowledge of P. vivax malaria. The aims of the present study were to explore the association between distance to vector breeding site and P...
September 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28924557/malaria-exflagellation-in-a-human-peripheral-blood-smear
#6
Borros Arneth, Christian Keller, Sylvia Schaefer
A clinical case is presented here of a patient from Afganistan. We found intraerythrocytic parasites consistent with malaria vivax. Additionally extraerythrocytic structures were seen. First a co-infection with Borrelia recurrentis was discussed later these structures were identified as male plasmodia microgametes resulting from exflagellation.
2017: IDCases
https://www.readbyqxmd.com/read/28924146/apols-with-low-ph-dependence-can-kill-all-african-trypanosomes
#7
Frédéric Fontaine, Laurence Lecordier, Gilles Vanwalleghem, Pierrick Uzureau, Nick Van Reet, Martina Fontaine, Patricia Tebabi, Benoit Vanhollebeke, Philippe Büscher, David Pérez-Morga, Etienne Pays
The primate-specific serum protein apolipoprotein L1 (APOL1) is the only secreted member of a family of cell death promoting proteins (1-4) . APOL1 kills the bloodstream parasite Trypanosoma brucei brucei, but not the human sleeping sickness agents T.b. rhodesiense and T.b. gambiense (3) . We considered the possibility that intracellular members of the APOL1 family, against which extracellular trypanosomes could not have evolved resistance, could kill pathogenic T. brucei subspecies. Here we show that recombinant APOL3 (rAPOL3) kills all African trypanosomes, including T...
September 18, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28923897/controlled-human-malaria-infection-applications-advances-and-challenges
#8
Danielle I Stanisic, James S McCarthy, Michael F Good
Controlled Human Malaria Infection (CHMI) entails deliberate infection with malaria parasites either by mosquito bite or direct injection of sporozoites or parasitised erythrocytes. When required, the resulting blood-stage infection is curtailed by the administration of anti-malarial drugs. Inducing a malaria infection via inoculation with infected blood was first used as a treatment (malariotherapy) for neurosyphilis in Europe and the United States in the early 1900s. More recently, CHMI has been applied to the fields of malaria vaccine and drug development where it is used to evaluate products in well-controlled early phase proof-of-concept clinical studies thus facilitating progression of only the most promising candidates for further evaluation in malaria-endemic areas...
September 18, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28923058/a-model-of-plasmodium-vivax-concealment-based-on-plasmodium-cynomolgi-infections-in-macaca-mulatta
#9
Luis L Fonseca, Chester J Joyner, Mary R Galinski, Eberhard O Voit
BACKGROUND: Plasmodium vivax can cause severe malaria. The total parasite biomass during infections is correlated with the severity of disease but not necessarily quantified accurately by microscopy. This finding has raised the question whether there could be sub-populations of parasites that are not observed in peripheral blood smears but continue to contribute to the increase in parasite numbers that drive pathogenesis. Non-human primate infection models utilizing the closely related simian malaria parasite Plasmodium cynomolgi hold the potential for quantifying the magnitude of possibly unobserved infected red blood cell (iRBC) populations and determining how the presence of this hidden reservoir correlates with disease severity...
September 18, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28923054/a-novel-method-for-extracting-nucleic-acids-from-dried-blood-spots-for-ultrasensitive-detection-of-low-density%C3%A2-plasmodium-falciparum-and-plasmodium-vivax%C3%A2-infections
#10
Kayvan Zainabadi, Matthew Adams, Zay Yar Han, Hnin Wai Lwin, Kay Thwe Han, Amed Ouattara, Si Thura, Christopher V Plowe, Myaing M Nyunt
BACKGROUND: Greater Mekong Subregion countries are committed to eliminating Plasmodium falciparum malaria by 2025. Current elimination interventions target infections at parasite densities that can be detected by standard microscopy or rapid diagnostic tests (RDTs). More sensitive detection methods have been developed to detect lower density "asymptomatic" infections that may represent an important transmission reservoir. These ultrasensitive polymerase chain reaction (usPCR) tests have been used to identify target populations for mass drug administration (MDA)...
September 18, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28922459/therapeutic-plasma-exchange-in-the-treatment-of-complicated-plasmodium-falciparum-malaria-a-case-report
#11
Tsong-Yih Ou, Cheng-Yen Chuang, Chun-Da Chen, Chung-Yi Cheng
Severe falciparum malaria is associated with multiple organ dysfunction and a high rate of fatal outcome. Malaria is a world-wide disease in tropical areas through the bites of vector mosquitoes. Parasitic protozoans introduced by the mosquito's saliva to the blood travel to the liver then mature and reproduce. In humans, malaria is caused by Plasmodium falciparum, P. malariae, P. ovale, P. vivax, and P. knowlesi, and P. falciparum causes most deaths. Typical malaria symptoms include fever, chills, fatigue, headache, nausea, and vomiting...
September 18, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/28915239/structural-basis-for-the-high-specificity-of-a-trypanosoma-congolense-immunoassay-targeting-glycosomal-aldolase
#12
Joar Pinto, Steven Odongo, Felicity Lee, Vaiva Gaspariunaite, Serge Muyldermans, Stefan Magez, Yann G-J Sterckx
BACKGROUND: Animal African trypanosomosis (AAT) is a neglected tropical disease which imposes a heavy burden on the livestock industry in Sub-Saharan Africa. Its causative agents are Trypanosoma parasites, with T. congolense and T. vivax being responsible for the majority of the cases. Recently, we identified a Nanobody (Nb474) that was employed to develop a homologous sandwich ELISA targeting T. congolense fructose-1,6-bisphosphate aldolase (TcoALD). Despite the high sequence identity between trypanosomatid aldolases, the Nb474-based immunoassay is highly specific for T...
September 15, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28910810/concurrent-infection-with-plasmodium-vivax-and-the-dengue-and-chikungunya-viruses-in-a-paediatric-patient-from-new-delhi-india-in-2016
#13
Ayesha Tazeen, Mohd Abdullah, Malik Hisamuddin, Sher Ali, Irshad H Naqvi, Hirday N Verma, Anwar Ahmed, Shama Parveen
Dengue and chikungunya fevers are transmitted by the common mosquito vector Aedes and malaria by Anopheles. Concurrent infections are reported due to co-circulation of these pathogens, especially in endemic regions. We report a rare case of triple infection with 3 arthropod-borne pathogens (Plasmodium vivax and the dengue and chikungunya viruses) in a 3-year-old child from New Delhi, India, in August 2016. The viruses were identified by RT-PCR and the parasite by microscopy and antigen detection. The dengue virus serotype 3 sequence was clustered in the genotype III by the phylogenetic analysis...
September 15, 2017: Intervirology
https://www.readbyqxmd.com/read/28910476/no-ordinary-sleeper-cell-managing-the-varied-problems-of-plasmodium-vivax-malaria
#14
Jason Jarvis
Plasmodium vivax malaria is an essential yet elusive target of tropical disease eradication efforts, and is the focus of this literature review. This review will reacquaint Special Operations Forces (SOF) Medics with the basic principles of malaria as context for understanding the several confounding issues particular to P. vivax infections. The review concludes with current malaria guidelines and malaria mitigation strategies.
2017: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/28903726/a-novel-diagnostic-method-for-malaria-using-loop-mediated-isothermal-amplification-lamp-and-minion%C3%A2-nanopore-sequencer
#15
Kazuo Imai, Norihito Tarumoto, Kazuhisa Misawa, Lucky Ronald Runtuwene, Jun Sakai, Kyoko Hayashida, Yuki Eshita, Ryuichiro Maeda, Josef Tuda, Takashi Murakami, Shigefumi Maesaki, Yutaka Suzuki, Junya Yamagishi, Takuya Maeda
BACKGROUND: A simple and accurate molecular diagnostic method for malaria is urgently needed due to the limitations of conventional microscopic examination. In this study, we demonstrate a new diagnostic procedure for human malaria using loop mediated isothermal amplification (LAMP) and the MinION™ nanopore sequencer. METHODS: We generated specific LAMP primers targeting the 18S-rRNA gene of all five human Plasmodium species including two P. ovale subspecies (P...
September 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28902417/genetic-variants-related-to-disease-susceptibility-and-immunotolerance-in-the-duffy-antigen-receptor-for-chemokines-darc-fy-gene-in-the-black-lion-tamarin-leontopithecus-chrysopygus-primates
#16
Ashley Ansel, James D Lewis, Don J Melnick, Cristiana Martins, Claudio Valladares-Padua, Beatriz Perez-Sweeney
The DARC (Duffy antigen receptor for chemokines) gene encodes the DARC protein, which serves multiple roles in the immune system, as a binding site for the malarial parasites Plasmodium vivax and Plasmodium knowlesi, a promiscuous chemokine receptor and a blood group antigen. Variation in DARC may play particularly significant roles in innate immunity, immunotolerance and pathogen entry in callitrichines, such as the black lion tamarin (Leontopithecus chrysopygus). We compared amino acid sequences of DARC in the black lion tamarin (BLT) to non-human Haplorhine primates and Homo sapiens...
September 13, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28900620/can-mixed-parasite-infections-thwart-targeted-malaria-elimination-program-in-india
#17
Upasana Shyamsunder Singh, Nisha Siwal, Veena Pande, Aparup Das
India is highly endemic to malaria with prevalence of all five species of human malaria parasites of Plasmodium genus. India is set for malaria elimination by 2030. Since cases of mixed Plasmodium species infections remain usually undetected but cause huge disease burden, in order to understand the distributional prevalence of both monospecies infections and mixed species infections in India, we collated published data on the differential infection incidences of the five different malaria parasites based on PCR diagnostic assay...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28899387/cognitive-performance-of-children-living-in-endemic-areas-for-plasmodium-vivax
#18
Laélia M B F Brasil, José L F Vieira, Eliete C Araújo, Pedro P F Piani, Rosa M Dias, Ana M R S Ventura, Bianca C Cabral, Renée C R Santa Brígida, Marcieni A de Andrade
BACKGROUND: The role of repeated episodes of malaria on the cognitive development of children is a relevant issue in endemic areas since it can have a long-lasting impact on individual lifespan. The aim of the current paper was to investigate whether the history of malaria can impair the verbal and performance skills of children living in an endemic area with low transmission of Plasmodium vivax malaria. METHODS: A cross-sectional study was conducted with children living in an endemic area of P...
September 12, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28898049/analysis-of-plasmodium-vivax-chloroquine-resistance-transporter-pvcrt-mutant-isoforms
#19
Matthew R Hassett, Bryce E Riegel, Paul Samuel Callaghan, Paul David Roepe
Chloroquine (CQ) resistance (CQR) in Plasmodium falciparum malaria is widespread and has limited the use of CQ in many regions of the globe. Malaria caused by the related human parasite P. vivax is as widespread as is P. falciparum malaria and has been treated with CQ as extensively as has P. falciparum, suggesting that P. vivax parasites have been selected with CQ as profoundly as have P. falciparum parasites. Indeed, a growing number of clinical reports have presented data suggesting increased P. vivax CQR...
September 12, 2017: Biochemistry
https://www.readbyqxmd.com/read/28893322/bovine-trypanosomosis-changes-in-parasitemia-and-packed-cell-volume-in-dry-and-wet-seasons-at-gidami-district-oromia-regional-state-western-ethiopia
#20
Efrem Degneh, Workineh Shibeshi, Getachew Terefe, Kaleab Asres, Hagos Ashenafi
BACKGROUND: Animal trypanosomosis is one of the major disease problems affecting agricultural productivity in Ethiopia. The impact of the disease is believed to vary with season and agro-ecologies in line with fly vector distribution. A cross-sectional study on bovine trypanosomosis was conducted from November 2015 to June 2016, in seven selected villages of Gidami district, Oromia Regional State, western Ethiopia. A total of 930 blood samples were collected and subjected to parasitological and hematological analysis...
September 11, 2017: Acta Veterinaria Scandinavica
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