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https://www.readbyqxmd.com/read/28435310/tropical-diseases-of-the-myocardium-a-review
#1
REVIEW
Zoe C Groom, Aristotle D Protopapas, Vasileios Zochios
Cardiovascular diseases are widely distributed throughout the world. Human parasitic infections are ubiquitous. Tropical parasites are increasingly recognized as causes of cardiovascular diseases. In this review, we address the most frequently reported parasites that directly infect the myocardium, including Trypanosoma cruzi, the protozoal causative agent of American trypanosomiasis (Chagas disease), and Taenia solium, the cestode causative agent of taeniasis and cysticercosis. We also discuss tropical endomyocardial fibrosis, trichinellosis and schistosomiasis...
2017: International Journal of General Medicine
https://www.readbyqxmd.com/read/28435221/phenotypic-evaluation-and-in-silico-admet-properties-of-novel-arylimidamides-in-acute-mouse-models-of-trypanosoma-cruzi-infection
#2
Cristiane França da Silva, Denise da Gama Jaén Batista, Julianna Siciliano de Araújo, Edézio Ferreira Cunha-Junior, Chad E Stephens, Moloy Banerjee, Abdelbasset A Farahat, Senol Akay, Mary K Fisher, David W Boykin, Maria de Nazaré Correia Soeiro
Arylimidamides (AIAs), previously termed as reversed amidines, present a broad spectrum of activity against intracellular microorganisms. In the present study, three novel AIAs were evaluated in a mouse model of Trypanosoma cruzi infection, which is the causative agent of Chagas disease. The bis-AIAs DB1957, DB1959 and DB1890 were chosen based on a previous screening of their scaffolds that revealed a very promising trypanocidal effect at nanomolar range against both the bloodstream trypomastigotes (BTs) and the intracellular forms of the parasite...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28435013/modeling-chagas-disease-in-chile-from-vector-to-congenital-transmission
#3
Mauricio Canals, Dante Cáceres, Sergio Alvarado, Andrea Canals, Pedro E Cattan
Chagaś disease is a human health problem in Latin America. It is highly prevalent in northern Chile between the Arica-Parinacota and Coquimbo regions, with reported incidence of 3-11/100000 inhabitants and mortality of 0.3-0.4/100000. The interruption of vector transmission was reported in 1999 by means of the elimination of the primary vector, Triatoma infestans, from human dwellings, thus the epidemiologic dynamics of this disease should be modified. Here we model the dynamics of Chagaś disease based on previous models for vector and congenital transmission, propose a model that includes both transmission forms and perform simulations...
April 20, 2017: Bio Systems
https://www.readbyqxmd.com/read/28432816/rhodnius-prolixus-from-classical-physiology-to-modern-developmental-biology
#4
REVIEW
Rodrigo Nunes-da-Fonseca, Mateus Berni, Vitória Tobias-Dos-Santos, Attilio Pane, Helena Marcolla Araujo
The hemiptera Rhodnius prolixus is a blood-feeding insect and a primary vector of Trypanosoma cruzi, the etiological agent of the Chagas disease. Over the past century, Rhodnius has been the subject of intense investigations, which have contributed to unveil important aspects of metabolism and physiology in insects. Recent technological innovations are helping dissect the genetic and molecular underpinnings of Rhodnius embryogenesis and organogenesis, thus fostering the use of this important species in the fields of developmental and evolutionary biology...
April 22, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28428122/challenges-in-the-management-of-chagas-disease-in-latin-american-migrants-in-europe
#5
REVIEW
B Monge-Maillo, R López-Vélez
 Chagas disease (CD) is endemic in Latin America. Due to migration, the infection has crossed borders and it is estimated that 68 000-120 000 people with CD are currently living in Europe and 30% of them may develop visceral involvement. However, up to 90% of CD cases in Europe remain undiagnosed. The challenges which have to be overcome in CD are related to screening, diagnostic tools and therapeutic management in non-endemic countries. AIMS : The aim of this review is to highlight how healthcare management for Latin American migrants with CD in Europe may be improved...
April 17, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28426735/ten-years-of-chagas-disease-research-looking-back-to-achievements-looking-ahead-to-challenges
#6
Eric Dumonteil, Claudia Herrera
No abstract text is available yet for this article.
April 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28419477/the-effectiveness-of-riboflavin-and-ultraviolet-light-pathogen-reduction-technology-in-eliminating-trypanosoma-cruzi-from-leukoreduced-whole-blood
#7
Teresa Jimenez-Marco, Beatriz Cancino-Faure, Enrique Girona-Llobera, M Magdalena Alcover, Cristina Riera, Roser Fisa
BACKGROUND: The parasitic Chagas disease is caused by the protozoan Trypanosoma cruzi, which is mainly transmitted by insect vectors. Other infection routes, both in endemic and in nonendemic areas, include organ and marrow transplantation, congenital transmission, and blood transfusion. Asymptomatic chronic chagasic individuals may have a low and transient parasitemia in peripheral blood and, consequently, they can unknowingly transmit the disease via blood transfusion. Riboflavin and ultraviolet (UV) light pathogen reduction is a method to reduce pathogen transfusion transmission risk based on damage to the pathogen nucleic acids...
April 16, 2017: Transfusion
https://www.readbyqxmd.com/read/28419136/occurrence-of-leishmania-infantum-in-the-central-nervous-system-of-naturally-infected-dogs-parasite-load-viability-co-infections-and-histological-alterations
#8
Valéria da Costa Oliveira, Viviane Cardoso Boechat, Artur Augusto Velho Mendes Junior, Maria de Fátima Madeira, Luiz Claudio Ferreira, Fabiano Borges Figueiredo, Monique Paiva Campos, Francisco das Chagas de Carvalho Rodrigues, Raquel de Vasconcellos Carvalhaes de Oliveira, Maria Regina Reis Amendoeira, Rodrigo Caldas Menezes
Zoonotic visceral leishmaniasis is caused by the protozoan Leishmania infantum and little is known about the occurrence and pathogenesis of this parasite in the CNS. The aims of this study were to evaluate the occurrence, viability and load of L. infantum in the CNS, and to identify the neurological histological alterations associated with this protozoan and its co-infections in naturally infected dogs. Forty-eight Leishmania-seropositive dogs from which L. infantum was isolated after necropsy were examined...
2017: PloS One
https://www.readbyqxmd.com/read/28418113/autochthonous-chagas-disease-in-the-southern-united-states-a-case-report-of-suspected-residential-and-military-exposures
#9
N Harris, L Woc-Colburn, S M Gunter, R Gorchakov, K O Murray, S Rossmann, M N Garcia
Chagas disease is a parasitic infection that can result in a progressive dilated cardiomyopathy. Here, we present the epidemiologic details of a suspected locally acquired transmission case originating from the southern United States. This is the first published report of Chagas disease in a young, healthy United States veteran with repeat triatomine exposures in Arizona. Military personnel and Arizona residents should be aware of their Chagas disease transmission risks.
April 18, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28413725/trypanosoma-cruzi-reservoir-triatomine-vector-co-occurrence-networks-reveal-meta-community-effects-by-synanthropic-mammals-on-geographic-dispersal
#10
Carlos N Ibarra-Cerdeña, Leopoldo Valiente-Banuet, Víctor Sánchez-Cordero, Christopher R Stephens, Janine M Ramsey
Contemporary patterns of land use and global climate change are modifying regional pools of parasite host species. The impact of host community changes on human disease risk, however, is difficult to assess due to a lack of information about zoonotic parasite host assemblages. We have used a recently developed method to infer parasite-host interactions for Chagas Disease (CD) from vector-host co-occurrence networks. Vector-host networks were constructed to analyze topological characteristics of the network and ecological traits of species' nodes, which could provide information regarding parasite regional dispersal in Mexico...
2017: PeerJ
https://www.readbyqxmd.com/read/28412452/enhancement-of-dissolution-rate-through-eutectic-mixture-and-solid-solution-of-posaconazole-and-benznidazole
#11
Camila Bezerra Melo Figueirêdo, Daniela Nadvorny, Amanda Carla Quintas de Medeiros Vieira, José Lamartine Soares Sobrinho, Pedro José Rolim Neto, Ping I Lee, Monica Felts de La Roca Soares
Benznidazole (BNZ), the only commercialized antichagasic drug, and the antifungal compound posaconazole (PCZ) have shown synergistic action in the therapy of Chagas disease, however both active pharmaceutical ingredients (APIs) exhibit low aqueous solubility potentially limiting their bioavailability and therapeutic efficacy. In this paper, we report for the first time the formation of a eutectic mixture as well as an amorphous solid solution of PCZ and BNZ (at the same characteristic ratio of 80:20wt%), which provided enhanced solubility and dissolution rate for both APIs...
April 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28411096/-seroprevalence-and-vertical-transmission-of-chagas-disease-in-a-cohort-of-latin-american-pregnant-women-in-a-tertiary-hospital-in-madrid
#12
Laura Francisco-González, Teresa Gastañaga-Holguera, Beatriz Jiménez Montero, Zarife Daoud Pérez, Marta Illán Ramos, Paloma Merino Amador, Miguel Ángel Herráiz Martínez, José Tomás Ramos Amador
BACKGROUND: Chagas disease, caused by Trypanosoma cruzi (T. cruzi), is endemic in Latin-America and is emerging in Spain due to immigration. The vertical transmission rate is around 5%. A routine prenatal screening with serology of all pregnant women from endemic areas is recommended to identify infected newborns, allowing early treatment and cure. OBJECTIVE: The aim of this study was to estimate the prevalence of positive Chagas serology in a cohort of pregnant women from Latin-America and its vertical transmission...
April 12, 2017: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
https://www.readbyqxmd.com/read/28407782/triatoma-vitticeps-subcomplex-hemiptera-reduviidae-triatominae-a-new-grouping-of-chagas-disease-vectors-from-south-america
#13
Kaio Cesar Chaboli Alevi, Jader de Oliveira, Maria Tercília Vilela de Azeredo-Oliveira, João Aristeu da Rosa
BACKGROUND: Triatomines have been grouped into complexes and subcomplexes based largely on morphological and geographical distribution. Although these groupings are not formally recognised as taxonomic ranks, they are likely monophyletic. However, recent studies have demonstrated that some subcomplexes from South America did not form monophyletic groups, and reorganisations have been suggested. One suggested reorganisation is to exclude Triatoma vitticeps, T. melanocephala, and T. tibiamaculata from the T...
April 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28406967/differential-transcriptome-analysis-supports-rhodnius-montenegrensis-and-rhodnius-robustus-hemiptera-reduviidae-triatominae-as-distinct-species
#14
Danila Blanco de Carvalho, Carlos Congrains, Samira Chahad-Ehlers, Heloisa Pinotti, Reinaldo Alves de Brito, João Aristeu da Rosa
Chagas disease is one of the main parasitic diseases found in Latin America and it is estimated that between six and seven million people are infected worldwide. Its etiologic agent, the protozoan Trypanosoma cruzi, is transmitted by triatomines, some of which from the genus Rhodnius. Twenty species are currently recognized in this genus, including some closely related species with low levels of morphological differentiation, such as Rhodnius montenegrensis and Rhodnius robustus. In order to investigate genetic differences between these two species, we generated large-scale RNA-sequencing data (consisting of four RNA-seq libraries) from the heads and salivary glands of males of R...
2017: PloS One
https://www.readbyqxmd.com/read/28406895/the-superfamily-keeps-growing-identification-in-trypanosomatids-of-ribj-the-first-riboflavin-transporter-family-in-protists
#15
Darío E Balcazar, María Cristina Vanrell, Patricia S Romano, Claudio A Pereira, Fernando A Goldbaum, Hernán R Bonomi, Carolina Carrillo
BACKGROUND: Trypanosomatid parasites represent a major health issue affecting hundreds of million people worldwide, with clinical treatments that are partially effective and/or very toxic. They are responsible for serious human and plant diseases including Trypanosoma cruzi (Chagas disease), Trypanosoma brucei (Sleeping sickness), Leishmania spp. (Leishmaniasis), and Phytomonas spp. (phytoparasites). Both, animals and trypanosomatids lack the biosynthetic riboflavin (vitamin B2) pathway, the vital precursor of flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) cofactors...
April 13, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28403237/evidence-of-neurofibromatosis-type-1-in-a-multi-morbid-inca-child-mummy-a-paleoradiological-investigation-using-computed-tomography
#16
Stephanie Panzer, Holger Wittig, Stephanie Zesch, Wilfried Rosendahl, Sandra Blache, Magdalena Müller-Gerbl, Gerhard Hotz
OBJECTIVE: In this study, an Inca bundle was examined using computed tomography (CT). The primary aim was to determine the preservation status of bony and soft tissues, the sex, the age at the time of death, possible indicators for disease or even the cause of death, as well as the kind of mummification. A secondary aim was to obtain a brief overview of the wrapping in order to gain additional information on the cultural background. MATERIALS AND METHODS: The bundle belongs to the Museum of Cultures in Basel, Switzerland, and was bought in Munich, Germany, in 1921...
2017: PloS One
https://www.readbyqxmd.com/read/28399301/wing-polymorphism-and-trypanosoma-cruzi-infection-in-wild-peridomestic-and-domestic-collections-of-mepraia-spinolai-hemiptera-reduviidae-from-chile
#17
Daniel Frías-Lasserre, Christian R González, Carolina Reyes Valenzuela, Danila Blanco de Carvalho, Jader Oliveira, Mauricio Canals, Joao Aristeu da Rosa
Mepraia spinolai (Porter) is a vector of Trypanosoma cruzi that causes Chagas disease. Females are always wingless, but males may be winged or wingless. We determined by PCR the infection percentage with T. cruzi of M. spinolai adults and nymphs in domestic, peridomestic, and wild collections, in different regions of Chile. In all regions, winged males were more abundant than females and wingless males. Winged males collected inside houses were less parasitized than were those from peridomestic and wild environments...
March 24, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399279/the-botanical-monoterpenes-linalool-and-eugenol-flush-out-nymphs-of-triatoma-infestans-hemiptera-reduviidae
#18
A N Moretti, E A Seccacini, E N Zerba, D Canale, R A Alzogaray
Monoterpenes are the main components of essential oils. Some members of this chemical family present insecticidal activity. Triatoma infestans (Klug) is the main vector of Chagas disease in Argentina, Bolivia, Paraguay, and Perú. The objective of this work was to evaluate the effect of six monoterpenes (1,8-cineole, eugenol, linalool, menthol, α-terpineol, and thymol) on the locomotor and flushing out activity of T. infestans. A video tracking technique was used to evaluate the locomotor activity of nymphs exposed to different concentrations of these chemicals applied as films on filter paper...
March 29, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399199/house-reinfestation-with-triatoma-infestans-hemiptera-reduviidae-after-community-wide-spraying-with-insecticides-in-the-argentine-chaco-a-multifactorial-process
#19
Yael M Provecho, M Sol Gaspe, M Del Pilar Fernández, Ricardo E Gürtler
We investigated the dynamics and underlying causes of house (re)infestation with Triatoma infestans (Klug 1834) after a community-wide residual spraying with pyrethroids in a well-defined rural section of Pampa del Indio municipality (northeastern Argentina) over a 4-yr period. House infestation was assessed by timed manual searches, during insecticide applications, and by opportunistic householders' bug collections. All reinfested houses were selectively re-sprayed with insecticides. The resident population comprised Qom (66...
February 19, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28398292/the-contemporary-distribution-of-trypanosoma-cruzi-infection-in-humans-alternative-hosts-and-vectors
#20
Annie J Browne, Carlos A Guerra, Renato Vieira Alves, Veruska Maia da Costa, Anne L Wilson, David M Pigott, Simon I Hay, Steve W Lindsay, Nick Golding, Catherine L Moyes
Chagas is a potentially fatal chronic disease affecting large numbers of people across the Americas and exported throughout the world through human population movement. It is caused by the Trypanosoma cruzi parasite, which is transmitted by triatomine vectors to humans and a wide range of alternative host species. The database described here was compiled to allow the risk of vectorial transmission to humans to be mapped using geospatial models. The database collates all available records, published since 2003, for prevalence and occurrence of infection in humans, vectors and alternative hosts, and links each record to a defined time and location...
April 11, 2017: Scientific Data
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