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https://www.readbyqxmd.com/read/29339220/a-new-chimeric-triple-reporter-fusion-protein-as-a-tool-for-in-vitro-and-in-vivo-multimodal-imaging-to-monitor-the-development-of-african-trypanosomes-and-leishmania-parasites
#1
Estefania Calvo Alvarez, Christelle Cren-Travaillé, Aline Crouzols, Brice Rotureau
Trypanosomiases and leishmaniases, caused by a group of related protist parasites, are Neglected Tropical Diseases currently threatening >500 million people worldwide. Reporter proteins have revolutionised the research on infectious diseases and have opened up new advances in the understanding of trypanosomatid-borne diseases in terms of both biology, pathogenesis and drug development. Here, we describe the generation and some applications of a new chimeric triple reporter fusion protein combining the red-shifted firefly luciferase PpyREH9 and the tdTomato red fluorescent protein, fused by the TY1 tag...
January 12, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29337909/salvia-species-as-sources-of-natural-products-with-antiprotozoal-activity
#2
REVIEW
Núria Llurba-Montesino, Thomas J Schmidt
Natural products from plants have been used since ancestral times to treat a wide variety of diseases worldwide. Plants of the genus Salvia (Sage) have been reported to be used for the prevention and treatment of various diseases and ailments. In particular, some Salvia species have been used in traditional medicine to treat diseases caused by protozoan parasites of the genera Trypanosoma, Leishmania and Plasmodium and scientific studies have demonstrated the activity of various isolated constituents from these plants against these pathogens...
January 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29332141/cultivable-fungi-present-in-antarctic-soils-taxonomy-phylogeny-diversity-and-bioprospecting-of-antiparasitic-and-herbicidal-metabolites
#3
Eldon C Q Gomes, Valéria M Godinho, Débora A S Silva, Maria T R de Paula, Gislaine A Vitoreli, Carlos L Zani, Tânia M A Alves, Policarpo A S Junior, Silvane M F Murta, Emerson C Barbosa, Jaquelline G Oliveira, Fabio S Oliveira, Camila R Carvalho, Mariana C Ferreira, Carlos A Rosa, Luiz H Rosa
Molecular biology techniques were used to identify 218 fungi from soil samples collected from four islands of Antarctica. These consisted of 22 taxa of 15 different genera belonging to the Zygomycota, Ascomycota, and Basidiomycota. Mortierella, Antarctomyces, Pseudogymnoascus, and Penicillium were the most frequently isolated genera and Penicillium tardochrysogenum, Penicillium verrucosus, Goffeauzyma gilvescens, and Mortierella sp. 2 the most abundant taxa. All fungal isolates were cultivated using solid-state fermentation to obtain their crude extracts...
January 13, 2018: Extremophiles: Life Under Extreme Conditions
https://www.readbyqxmd.com/read/29324858/mapping-the-geographical-distribution-of-podoconiosis-in-cameroon-using-parasitological-serological-and-clinical-evidence-to-exclude-other-causes-of-lymphedema
#4
Kebede Deribe, Amuam Andrew Beng, Jorge Cano, Abdel Jelil Njouendo, Jerome Fru-Cho, Abong Raphael Awah, Mathias Esum Eyong, Patrick W Chounna Ndongmo, Emanuele Giorgi, David M Pigott, Nick Golding, Rachel L Pullan, Abdisalan M Noor, Fikre Enquselassie, Christopher J L Murray, Simon J Brooker, Simon I Hay, Peter Enyong, Melanie J Newport, Samuel Wanji, Gail Davey
BACKGROUND: Podoconiosis is a non-filarial elephantiasis, which causes massive swelling of the lower legs. It was identified as a neglected tropical disease by WHO in 2011. Understanding of the geographical distribution of the disease is incomplete. As part of a global mapping of podoconiosis, this study was conducted in Cameroon to map the distribution of the disease. This mapping work will help to generate data on the geographical distribution of podoconiosis in Cameroon and contribute to the global atlas of podoconiosis...
January 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29324739/mansonella-perstans-microfilaremic-individuals-are-characterized-by-enhanced-type-2-helper-t-and-regulatory-t-and-b-cell-subsets-and-dampened-systemic-innate-and-adaptive-immune-responses
#5
Manuel Ritter, Winston Patrick Chounna Ndongmo, Abdel Jelil Njouendou, Nora Nganyewo Nghochuzie, Lucy Cho Nchang, Dizzle Bita Tayong, Kathrin Arndts, Norman Nausch, Marc Jacobsen, Samuel Wanji, Laura E Layland, Achim Hoerauf
The filarial nematode Mansonella perstans is endemic throughout Africa, northern South America and the Caribbean. Interestingly, M. perstans-infected individuals present no distinct clinical picture associated with certain pathology. Due to its relatively silent nature, research on this tropical disease has been neglected, especially M. perstans-driven immune responses. A hindrance in obtaining data on M. perstans-specific responses has been the inability to obtain adult worms since their habitats in serous cavities are difficult to access...
January 11, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29320544/diversity-patterns-leishmania-dna-detection-and-bloodmeal-identification-of-phlebotominae-sand-flies-in-villages-in-northern-colombia
#6
Camila González, Cielo León, Andrea Paz, Marla López, Gisell Molina, Diana Toro, Mario Ortiz, Juan Manuel Cordovez, María Claudia Atencia, Germán Aguilera, Catalina Tovar
Leishmaniases are neglected tropical diseases exhibiting complex transmission cycles due to the number of parasite species circulating, sand fly species acting as vectors and infected mammals, including humans, which are defined in the New World as accidental hosts. However, current transmission scenarios are changing, and the disease is no longer exclusively related to forested areas but urban transmission foci occur, involving some species of domestic animals as suspected reservoirs. The aim of this study was to determine the transmission cycles in urban environments by evaluating sand fly diversity, detection of Leishmania DNA, and bloodmeal sources through intra and peridomestic collections...
2018: PloS One
https://www.readbyqxmd.com/read/29317889/clinical-and-laboratory-analysis-of-patients-with-leishmaniasis-a-retrospective-study-from-a-tertiary-care-center-in-new-delhi
#7
Nitin Gupta, Kamla Kant, Bijay Ranjan Mirdha
Background: Leishmaniasis manifests as visceral (VL), cutaneous (CL) or a dermal sequel of VL, known as Post kala-azar dermal leishmaniasis (PKDL). The aim of the study was to analyze the clinical and laboratory features of cases diagnosed with leishmaniasis. Methods: This hospital-based retrospective study included all cases of VL, PKDL, and CL diagnosed between Jan 2011 to Jan 2016 at All India Institute of Medical Sciences, New Delhi. Clinical and laboratory profile of the diagnosed cases were analyzed in detail...
October 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/29317800/leishmaniasis-in-humans-drug-or-vaccine-therapy
#8
REVIEW
Masoud Ghorbani, Ramin Farhoudi
Leishmania is an obligate intracellular pathogen that invades phagocytic host cells. Approximately 30 different species of Phlebotomine sand flies can transmit this parasite either anthroponotically or zoonotically through their bites. Leishmaniasis affects poor people living around the Mediterranean Basin, East Africa, the Americas, and Southeast Asia. Affected regions are often remote and unstable, with limited resources for treating this disease. Leishmaniasis has been reported as one of the most dangerous neglected tropical diseases, second only to malaria in parasitic causes of death...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29315432/the-unbearable-lightness-of-being-malnourished-severe-acute-malnutrition-remains-a-neglected-tropical-disease
#9
Indi Trehan, Quique Bassat
No abstract text is available yet for this article.
January 5, 2018: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/29313667/design-and-synthesis-of-broad-spectrum-trypanosomatid-selective-inhibitors
#10
Andrew L Fraser, Stefanie K Menzies, Elizabeth F B King, Lindsay B Tulloch, Eoin R Gould, Marija Zacharova, Terry K Smith, Gordon J Florence
Neglected tropical diseases caused by parasitic infections are an ongoing and increasing concern that have a devastating effect on the developing world due to their burden on human and animal health. In this work, we detail the preparation of a focused library of substituted-tetrahydropyran derivatives and their evaluation as selective chemical tools for trypanosomatid inhibition and the follow-on development of photo-affinity probes capable of labeling target protein(s) in vitro. Several of these functionalised compounds maintain low micromolar activity against Trypanosoma brucei, Trypanosoma cruzi, Leishmania major and Leishmania donovani...
January 9, 2018: ACS Infectious Diseases
https://www.readbyqxmd.com/read/29313478/schistosomiasis-and-infertility-in-east-africa
#11
Patricia A Woodall, Michael R Kramer
Case reports and pathology series suggest associations of female genital schistosomiasis (Schistosoma haematobium) with infertility and ectopic pregnancy. Differential geographic distribution of infertility is not explained by analyses of known risk factors. In this cross-sectional multilevel semi-ecologic study, interpolated prevalence maps for S. haematobium and Schistosoma mansoni in East Africa were created using data from two open-access Neglected Tropical Diseases Databases. Prevalence was extracted to georeferenced survey sample points for Demographic and Health Surveys for Ethiopia, Kenya, Tanzania, and Uganda for 2000 and 2010...
January 8, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29311092/pharmacodynamics-of-flubendazole-for-cryptococcal-meningoencephalitis-repurposing-and-reformulation-of-an-anti-parasitic-agent-for-a-neglected-fungal-disease
#12
Gemma L Nixon, Laura McEntee, Adam Johnson, Nikki Farrington, Sarah Whalley, Joanne Livermore, Cristien Natal, Gina Washbourn, Jaclyn Bibby, Neil Berry, Jodi Lestner, Megan Truong, Andrew Owen, David Lalloo, Ian Charles, William Hope
Current therapeutic options for cryptococcal meningitis are limited by toxicity, global supply and emergence of resistance. There is an urgent need to develop additional antifungal agents that are fungicidal within the central nervous system and preferably orally bioavailable. The benzimidazoles have broad-spectrum anti-parasitic activity, but also have in vitro antifungal activity that includes Cryptococcus neoformans Flubendazole (a benzimidazole) has been reformulated by Janssen Pharmaceutica as an amorphous solid drug nanodispersion to develop an orally bioavailable medicine for the treatment of neglected tropical diseases such as onchocerciasis...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29310700/a-cross-sectional-study-of-the-filarial-and-leishmania-co-endemicity-in-two-ecologically-distinct-settings-in-mali
#13
Moussa Brema Sangare, Yaya Ibrahim Coulibaly, Siaka Yamoussa Coulibaly, Michel Emmanuel Coulibaly, Bourama Traore, Ilo Dicko, Ibrahim Moussa Sissoko, Sibiry Samake, Sekou Fantamady Traore, Thomas Bruce Nutman, Jesus Gilberto Valenzuela, Ousmane Faye, Shaden Kamhawi, Fabiano Oliveira, Roshanak Tolouei Semnani, Seydou Doumbia
BACKGROUND: Filariasis and leishmaniasis are two neglected tropical diseases in Mali. Due to distribution and associated clinical features, both diseases are of concern to public health. The goal of this study was to determine the prevalence of co-infection with filarial (Wuchereria bancrofti and Mansonella perstans) and Leishmania major parasites in two ecologically distinct areas of Mali, the Kolokani district (villages of Tieneguebougou and Bougoudiana) in North Sudan Savanna area, and the district of Kolondieba (village of Boundioba) in the South Sudan Savanna area...
January 8, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29309411/tungiasis-related-life-quality-impairment-in-children-living-in-rural-kenya
#14
Susanne Wiese, Lynne Elson, Hermann Feldmeier
BACKGROUND: Tungiasis (sand flea disease) is a neglected tropical skin disease caused by female sand fleas (Tunga spp.) embedded in the skin of the host. The disease is common in sub-Saharan Africa and predominantly affects children living in impoverished rural communities. In these settings tungiasis is associated with important morbidity. Whether tungiasis impairs life quality has never been studied. METHODS: The study was performed in 50 children with tungiasis, living in resource-poor communities in coastal Kenya...
January 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29304878/bionomic-aspects-of-lutzomyia-evansi-and-lutzomyia-longipalpis-proven-vectors-of-leishmania-infantum-in-an-endemic-area-of-non-ulcerative-cutaneous-leishmaniasis-in-honduras
#15
Ángel Mejía, Gabriela Matamoros, Gustavo Fontecha, Wilfredo Sosa-Ochoa
BACKGROUND: Some Lutzomyia species are the vectors of human leishmaniasis in the Americas. Visceral and cutaneous leishmaniasis are both endemic in the Pacific region of Honduras, but the non-ulcerative form is the more frequent clinical manifestation in this region, where Lutzomyia longipalpis is the most abundant and the only incriminated vector. Taxonomic identification and distribution studies of sand flies are important to understand the epidemiology and to control these neglected tropical diseases...
January 5, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29304849/should-i-stay-or-should-i-go-movement-of-adult-triatoma-sordida-within-the-peridomestic-area-of-a-typical-brazilian-cerrado-rural-household
#16
Edson Santos Dantas, Rodrigo Gurgel-Gonçalves, Daniel Antunes Maciel Villela, Fernando Araújo Monteiro, Rafael Maciel-de-Freitas
BACKGROUND: Chagas disease, or American trypanosomiasis, is an important neglected tropical illness caused by the flagellate protozoan Trypanosoma cruzi, which is primarily transmitted to humans by hematophagous insects of the subfamily Triatominae. Although knowledge on triatomine movement capabilities at the micro-geographical scale is of fundamental importance concerning the development of effective vector control strategies, it remains a poorly understood subject. Furthermore, survival rates and size estimates of natural populations are important topics to consider when evaluating transmission intensity...
January 5, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29297911/non-natural-amino-acid-peptide-microarrays-to-discover-ebola-virus-glycoprotein-ligands
#17
Joshua A Rabinowitz, John C Lainson, Stephen Albert Johnston, Chris W Diehnelt
We demonstrate a platform to screen a virus pseudotyped with Ebola virus glycoprotein (GP) against a library of peptides that contain non-natural amino acids to develop GP affinity ligands. This system could be used for rapid development of peptide-based antivirals for other emerging or neglected tropical infectious diseases.
January 3, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29289244/total-syntheses-of-mycolactone-a-b-and-its-analogues-for-the-exploration-of-the-biology-of-buruli-ulcer
#18
Sarah Saint-Auret, Anne-Caroline Chany, Virginie Casarotto, Cédric Tresse, Lise Parmentier, Hajer Abdelkafi, Nicolas Blanchard
Buruli ulcer, classified as a neglected tropical disease by the World Health Organization, is caused by a mycobacterium which secretes a macrolidic exotoxin called mycolactone A/B. In this article, several synthetic strategies for the preparation of this toxin are discussed, highlighting the importance of total synthesis for the exploration of biological mechanism underpinning relevant human diseases.
December 1, 2017: Chimia
https://www.readbyqxmd.com/read/29286346/hydrazone-derivatives-enhance-antileishmanial-activity-of-thiochroman-4-ones
#19
Esteban Vargas, Fernando Echeverri, Yulieth A Upegui, Sara M Robledo, Wiston Quiñones
Cutaneous leishmaniasis (CL) is a neglected tropical disease, which causes severe skin lesions. Due to the lack of effective vaccines, and toxicity or reduced effectiveness of available drugs in addition to complex and prolonged treatments, there is an urgent need to develop alternatives for the treatment for CL with different mechanisms of action. In our effort to search for new promising hits against Leishmania parasites we prepared 18 acyl hydrazone derivatives of thiochroman-4-ones. Compounds were evaluated for their in vitro antileishmanial activity against the intracellular amastigote form of Leishmania panamensis and cytotoxic activity against human monocytes (U-937 ATCC CRL-1593...
December 29, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29284005/surveillance-of-strongyloidiasis-in-spanish-in-patients-1998-2014
#20
Moncef Belhassen-García, Montserrat Alonso-Sardón, Angela Martinez-Perez, Cristina Soler, Cristina Carranza-Rodriguez, José Luis Pérez-Arellano, Antonio Muro, Fernando Salvador
BACKGROUND: Strongyloides stercoralis is a parasite that causes strongyloidiasis, a neglected tropical disease. S. stercoralis is a soil-transmitted helminth that is widely distributed in tropical and subtropical regions of the world. Strongyloidiasis can occur without any symptoms or as a chronic infection characterized by mild, unspecific symptoms such as pruritus, abdominal pain or discomfort; respiratory impairment also may manifest as a potentially fatal hyperinfection or disseminated infection...
2017: PloS One
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