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Sand fly

Raúl Hernando Pardo, Erika Santamaría, Olga Lucia Cabrera
The present study identified the entering and exiting sites for Lutzomyia longiflocosa in rural houses of the sub-Andean region in Colombia. Entering sites were identified with sticky traps set up outside the bedrooms, around the eave openings, and with cage traps enclosing the slits in the doors and windows inside the bedrooms. Exiting sites were identified by releasing groups of females indoors. These females were blood fed and marked with fluorescent powders. Females were recaptured with the trap placement described above but set up on the opposite sides of the openings...
December 1, 2016: Memórias do Instituto Oswaldo Cruz
Yoshihisa Hashiguchi, Lenin N Velez, Nancy V Villegas, Tatsuyuki Mimori, Eduardo A L Gomez, Hirotomo Kato
This article reviews current knowledge about leishmaniases in Ecuador, proceeding from 1920, when the first human case was described, to the present, mainly focusing on the recent research events published. Regarding basic situations, it appears that 23 of Ecuador's 24 provinces have leishmaniasis-case reports. The disease is one of the mandatory notification infectious diseases in the country since 2005. All the 21,305 cases notified to the Ministry of Public Health, during the period from 2001 through 2014, were said to involve different clinical features of cutaneous leishmaniasis (CL) but not visceral (VL)...
December 2, 2016: Acta Tropica
Bourama Traoré, Fabiano Oliveira, Ousmane Faye, Adama Dicko, Cheick A Coulibaly, Ibrahim M Sissoko, Samake Sibiry, Nafomon Sogoba, Moussa Brema Sangare, Yaya I Coulibaly, Pierre Traore, Sekou F Traore, Jennifer M Anderson, Somita Keita, Jesus G Valenzuela, Shaden Kamhawi, Seydou Doumbia
Historically the western sahelian dry regions of Mali are known to be highly endemic for cutaneous leishmaniasis (CL) caused by Leishmania major, while cases are rarely reported from the Southern savanna forest of the country. Here, we report baseline prevalence of CL infection in 3 ecologically distinct districts of Mali (dry sahelian, north savanna and southern savanna forest areas). We screened 195 to 250 subjects from 50 to 60 randomly selected households in each of the 6 villages (four from the western sahelian district of Diema in Kayes region, one from the central district of Kolokani and one from the southern savanna district of Kolodieba, region of Sikasso)...
November 2016: PLoS Neglected Tropical Diseases
João Peres Ribeiro, Estela Domingos Vicente, Célia Alves, Xavier Querol, Fulvio Amato, Luís A C Tarelho
Combustion of residual forest biomass (RFB) derived from eucalypt (Eucalyptus globulus), pine (Pinus pinaster) and golden wattle (Acacia longifolia) was evaluated in a pilot-scale bubbling fluidised bed reactor (BFBR). During the combustion experiments, monitoring of temperature, pressure and exhaust gas composition has been made. Ash samples were collected at several locations along the furnace and flue gas treatment devices (cyclone and bag filter) after each combustion experiment and were analysed for their unburnt carbon content and chemical composition...
November 26, 2016: Environmental Science and Pollution Research International
Jovana Sadlova, Jitka Myskova, Tereza Lestinova, Jan Votypka, Matthew Yeo, Petr Volf
Leishmania parasites alternate in their life cycle between promastigote stages that develop in the gut of phlebotomine sand flies and amastigotes residing inside phagocytic cells of vertebrate hosts. For experimental infections of sand flies, promastigotes are frequently used as this way of infection is technically easier although ingestion of promastigotes by sand flies is unnatural. Here we aimed to answer a critical question, to what extent do promastigote-initiated experimental infections differ from those initiated with intracellular amastigotes...
November 23, 2016: Parasitology
Kourosh Azizi, Mohammad Bagher Askari, Mohsen Kalantari, Mohammad Djaefar Moemenbellah-Fard
Zoonotic Cutaneous Leishmaniosis (ZCL) remains the most crucial vector-borne public health disease particularly in endemic rural parts of Iran. The main aim of this study is to identify wild sand flies (Diptera: Psychodidae), determine their infection rate, and differentiate their host blood meal sources using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. Sand fly populations were caught with sticky paper traps from 10 different villages in the county of Darab, Fars province, southern Iran...
November 17, 2016: Pathogens and Global Health
Vit Dvorak, Kristyna Hlavackova, Alica Kocisova, Petr Volf
A large-scale entomological survey was carried out in summer 2016 in the Czech Republic and Slovakia. It revealed, for the first time, the presence of the phlebotomine sand fly Phlebotomus (Transphlebotomus) mascittii Grassi, 1908 (Diptera: Phlebotominae) in south-western Slovakia. Species identification of a captured female was confirmed by both morphological and sequencing (COI) analyses.
2016: Parasite: Journal de la Société Française de Parasitologie
Jorian Prudhomme, Cécile Cassan, Mallorie Hide, Céline Toty, Nil Rahola, Baptiste Vergnes, Jean-Pierre Dujardin, Bulent Alten, Denis Sereno, Anne-Laure Bañuls
BACKGROUND: Phlebotomus ariasi Tonnoir, 1921, is the predominant sand fly species in the Cevennes region and a proven vector of Leishmania infantum, which is the main pathogen of visceral and canine leishmaniasis in the south of France. Even if this species is widely present in Western Mediterranean countries, its biology and ecology remain poorly known. The main goals of this work are to investigate the phenotypic variation of P. ariasi at a local scale in a region characterized by climatic and environmental fluctuations, and to determine if slope and altitude could affect the sand fly phenotypes...
November 14, 2016: Parasites & Vectors
Carolina N Spiegel, Denise B Dos Santos Dias, Alejandra S Araki, James G C Hamilton, Reginaldo P Brazil, Théresa M Jones
In this paper we review the natural history of pheromone communication and the current diversity of aggregation-sex pheromones in the sand fly Lutzomyia longipalpis. This species complex is the main vector of Leishmania infantum, the agent of visceral leishmaniasis in the Americas. The identification of variation in pheromone chemotypes combined with molecular and sound analyses have all contributed to our understanding of the extent of divergence among cryptic members of this complex. The importance of chemical signals as pre-mating barriers and drivers of speciation is discussed...
November 14, 2016: Parasites & Vectors
Kaili Li, Huiying Chen, Jinjin Jiang, Xiangyu Li, Jiannong Xu, Yajun Ma
Sand fly Phlebotomus chinensis is a primary vector of transmission of visceral leishmaniasis in China. The sand flies have adapted to various ecological niches in distinct ecosystems. Characterization of the microbial structure and function will greatly facilitate the understanding of the sand fly ecology, which would provide critical information for developing intervention strategy for sand fly control. In this study we compared the bacterial composition between two populations of Ph. chinensis from Henan and Sichuan, China...
November 7, 2016: Scientific Reports
Andressa Alencastre Fuzari, Aline Ferreira Dos Santos Delmondes, Vanessa De Araújo Barbosa, Francisco de Assis Marra, Reginaldo Peçanha Brazil
INTRODUCTION: The sand fly, Lutzomyia longipalpis, is the main vector of Leishmania infantum in the Americas, primarily occurring in areas of apparent anthropomorphic modifications in several regions of Brazil. METHODS: Sand flies were captured using light traps. RESULTS: Out of all captured species, Lu. longipalpis numbers had increased within the park. CONCLUSIONS: We report the occurrence of Lu. longipalpis in an area of Atlantic Forest, possibly representing the first sylvatic population of Lu...
September 2016: Revista da Sociedade Brasileira de Medicina Tropical
Michal Sima, Marian Novotny, Lukas Pravda, Petra Sumova, Iva Rohousova, Petr Volf
Yellow-related proteins (YRPs) present in sand fly saliva act as affinity binders of bioamines, and help the fly to complete a bloodmeal by scavenging the physiological signals of damaged cells. They are also the main antigens in sand fly saliva and their recombinant form is used as a marker of host exposure to sand flies. Moreover, several salivary proteins and plasmids coding these proteins induce strong immune response in hosts bitten by sand flies and are being used to design protecting vaccines against Leishmania parasites...
2016: PloS One
Regis Gomes, Katrine Cavalcanti, Clarissa Teixeira, Augusto M Carvalho, Paulo S Mattos, Juqueline R Cristal, Aline C Muniz, José Carlos Miranda, Camila I de Oliveira, Aldina Barral
BACKGROUND: Previous works showed that immunization with saliva from Lutzomyia intermedia, a vector of Leishmania braziliensis, does not protect against experimental infection. However, L. braziliensis is also transmitted by Lutzomyia whitmani, a sand fly species closely related to Lu. intermedia. Herein we describe the immune response following immunization with Lu. whitmani saliva and the outcome of this response after L. braziliensis infection. METHODS AND FINDINGS: BALB/c mice immunized with Lu...
November 2016: PLoS Neglected Tropical Diseases
Lairton Souza Borja, Orlando Marcos Farias de Sousa, Manuela da Silva Solcà, Leila Andrade Bastos, Marcelo Bordoni, Jairo Torres Magalhães, Daniela Farias Larangeira, Stella Maria Barrouin-Melo, Deborah Bittencourt Mothé Fraga, Patrícia Sampaio Tavares Veras
The sand fly Lutzomyia longipalpis is primarily responsible for the transmission of visceral leishmaniasis (VL) in the New World, and dogs are considered to be the main urban reservoir of this disease. In order to improve the efficacy of control measures, it is essential to assess the transmission capacity of Leishmania infantum to the sand fly vector by naturally infected dogs. The present study investigated the existence of correlations between canine clinical presentation and the intensity of parasite load in the blood, skin and spleen of naturally infected dogs...
October 15, 2016: Veterinary Parasitology
Massila Wagué Senghor, Abdoul Aziz Niang, Jérome Depaquit, Hubert Ferté, Malick Ndao Faye, Eric Elguero, Oumar Gaye, Bulent Alten, Utku Perktas, Cécile Cassan, Babacar Faye, Anne-Laure Bañuls
Leishmania (L.) infantum is the causative agent in an endemic focus of canine leishmaniasis in the Mont-Rolland district (Thiès, Senegal). In this area, the transmission cycle is well established and more than 30% of dogs and 20% of humans are seropositive for L. infantum. However, the sand fly species involved in L. infantum transmission cycle are still unknown. Between 2007 and 2010, 3654 sand flies were collected from different environments (indoor, peridomestic, farming and sylvatic areas) to identify the main L...
November 2016: PLoS Neglected Tropical Diseases
Mniouil Meryem, Fellah Hajiba, Amarir Fatima, Et-Touys Abdeslam, Bekhti Khadija, Adlaoui El Bachir, Bakri Youssef, Nhammi Haddou, Sadak Abderrahim, Sebti Faiza
Leishmaniases are parasitic diseases frequent in the Mediterranean Basin. Visceral leishmaniasis (VL) is a notifiable parasitic disease that increased in incidence in Morocco over the past few years and has recently emerged in several new foci, causing a public health problem in Morocco. The aim of this study is to describe the spatio-temporal distribution of VL in Morocco between 1990 and 2014 period in order to highlight important features and trends of VL and its epidemiology and to assess whether the activity of the unit reflects the situation of the disease at the national level and whether it could constitute an indicator of public health relevance...
October 26, 2016: Acta Tropica
Everton Falcão de Oliveira, Aline Etelvina Casaril, Wagner Souza Fernandes, Michelle de Saboya Ravanelli, Márcio José de Medeiros, Roberto Macedo Gamarra, Antônio Conceição Paranhos Filho, Elisa Teruya Oshiro, Alessandra Gutierrez de Oliveira, Eunice Aparecida Bianchi Galati
The monthly distribution and abundance of sand flies are influenced by both biotic and abiotic factors. The present study aimed to evaluate the seasonal distribution of sand flies and the relation between their abundance and environmental parameters, including vegetation and climate. This study was conducted over a 2-year period (April 2012 to March 2014). Monthly distribution was evaluated through the weekly deployment of CDC light traps in the peridomicile area of 5 residences in an urban area of the municipality of Corumbá in the State of Mato Grosso do Sul, Brazil...
2016: PloS One
Viviane Coutinho Meneguzzi, Claudiney Biral Dos Santos, Gustavo Rocha Leite, Blima Fux, Aloísio Falqueto
Cutaneous leishmaniasis (CL) is caused by a protozoan of the genus Leishmania and is transmitted by sand flies. The state of Espírito Santo (ES), an endemic area in southeast Brazil, has shown a considerably high prevalence in recent decades. Environmental niche modelling (ENM) is a useful tool for predicting potential disease risk. In this study, ENM was applied to sand fly species and CL cases in ES to identify the principal vector and risk areas of the disease. Sand flies were collected in 466 rural localities between 1997 and 2013 using active and passive capture...
2016: PloS One
A F Brilhante, P B Sábio, E A B Galati
A new species of phlebotomine sand fly, Psathyromyia elizabethdorvalae sp. n. Brilhante, Sábio & Galati from Xapuri, Acre state, Brazil, is described, with illustrations of male and female adults.
October 24, 2016: Journal of Medical Entomology
Pedro J Alcolea, Ana Alonso, Francisco García-Tabares, María C Mena, Sergio Ciordia, Vicente Larraga
Leishmania amazonensis is one of the major etiological agents of the neglected, stigmatizing disease termed american cutaneous leishmaniasis (ACL). ACL is a zoonosis and rodents are the main reservoirs. Most cases of ACL are reported in Brazil, Bolivia, Colombia and Peru. The biological cycle of the parasite is digenetic because sand fly vectors transmit the motile promastigote stage to the mammalian host dermis during blood meal intakes. The amastigote stage survives within phagocytes of the mammalian host...
2016: PloS One
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