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https://www.readbyqxmd.com/read/29345102/the-mycobiota-of-the-sand-fly-phlebotomus-perniciosus-involvement-of-yeast-symbionts-in-uric-acid-metabolism
#1
Elena Martin, Ilaria Varotto Boccazzi, Leone De Marco, Gioia Bongiorno, Matteo Montagna, Luciano Sacchi, Priscilla Mensah, Irene Ricci, Luigi Gradoni, Claudio Bandi, Sara Epis
The knowledge of the fungal mycobiota of arthropods, including the vectors of human and animal diseases, is still limited. Here, we investigated the mycobiota associated with the sand fly Phlebotomus perniciosus, the main vector of leishmaniasis in the western Mediterranean area, by a culture-dependent approach (microbiological analyses and sequencing of the 26S rRNA gene), internal transcribed spacer (ITS) rRNA amplicon-based next-generation sequencing, fluorescence in situ hybridisation (FISH), and genome sequencing of the dominant yeast species...
January 18, 2018: Environmental Microbiology
https://www.readbyqxmd.com/read/29335002/leishmania-mortality-in-sand-fly-blood-meal-is-not-species-specific-and-does-not-result-from-direct-effect-of-proteinases
#2
Katerina Pruzinova, Jovana Sadlova, Jitka Myskova, Tereza Lestinova, Jozef Janda, Petr Volf
BACKGROUND: Leishmania development in sand flies is confined to the alimentary tract and is closely connected with blood meal digestion. Previously, it has been published that activities of sand fly midgut proteases are harmful to Leishmania, especially to amastigote-promastigote transition forms. However, our experiments with various Leishmania-sand fly pairs gave quite opposite results. METHODS: We evaluated the effect of semi-digested midgut content on different life stages of Leishmania donovani and Leishmania major in vitro...
January 15, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29332596/synthesis-and-characterization-of-thiocarbohydrazones-and-their-inhibitory-potential-against-ignored-disease-leishmaniasis
#3
Nida Ghouri, Khalid Mohammed Khan, Arshia, M Iqbal Choudhary, Shahnaz Perveen
BACKGROUND: Leishmaniasis is a protozoan parasitic vector-borne disease which is endemic in 88 tropical countries. Infected sand fly is the main cause of this disease while, there are several vectors, parasites, and reservoirs involved in the transmission of this disease. Leishmania donovani, L. infantum, and L. chagasi are. common disease causing species, spread through sandflies. It is considered to be a focal disease having scattered foci. Leishmaniasis is a disease with a broad clinical spectrum...
January 14, 2018: Medicinal Chemistry
https://www.readbyqxmd.com/read/29324760/bionomics-of-phlebotomus-argentipes-in-villages-in-bihar-india-with-insights-into-efficacy-of-irs-based-control-measures
#4
David M Poché, Rajesh B Garlapati, Shanta Mukherjee, Zaria Torres-Poché, Epco Hasker, Tahfizur Rahman, Aakanksha Bharti, Vishnu P Tripathi, Suman Prakash, Rahul Chaubey, Richard M Poché
BACKGROUND: Visceral leishmaniasis (VL) is a deadly vector-borne disease. Approximately 90% of Indian VL cases occur in Bihar, where the sand fly, Phlebotomus argentipes, is the principal vector. Sand fly control in Bihar consists of indoor residual spraying (IRS), the practice of spraying the inner walls of village dwellings with insecticides. Prior researchers have evaluated success of IRS-control by estimating vector abundance in village houses, but the number of sampling periods (n = 2-3) were minimal, and outdoor-resting P...
January 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29324232/insect-gut-microbiota-accessories-to-the-bite
#5
Serap Aksoy
The Leishmania parasite is transmitted via the bite of a sand fly. In this issue of Cell Host & Microbe, Dey et al. (2018) report that sand fly gut microbiota are also transferred to the bite site, promoting neutrophil recruitment and parasite dissemination to distal organs.
January 10, 2018: Cell Host & Microbe
https://www.readbyqxmd.com/read/29322056/field-evaluation-of-outdoor-ultra-low-volume-ulv-applications-against-phlebotomine-sand-flies-diptera-psychodidae-in-al-rabta-north-west-of-libya
#6
Mostafa Ramahdan Dokhan, Mohamed Amin Kenawy, Taher Shaibi, Badereddin Bashir Annajar
Background: Al Rabta is a rural area in the North-West of Libya that represents an important focus of zoonotic cutaneous leishmaniasis. This study aimed to evaluate the effect of Ultra Low Volume (ULV) applications in controlling sand flies and its impact on leishmaniasis transmission in this area. Methods: Two neighboring villages were selected: Al Rabta West (RW) as cypermethrin treated village and Al Rabta East (RE) as check one. The ULV was evaluated through 3 spraying cycles during Apr, Jun and Sep 2013...
September 2017: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/29320544/diversity-patterns-leishmania-dna-detection-and-bloodmeal-identification-of-phlebotominae-sand-flies-in-villages-in-northern-colombia
#7
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/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
#8
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/29301571/antibody-response-to-sand-fly-saliva-is-a-marker-of-transmission-intensity-but-not-disease-progression-in-dogs-naturally-infected-with-leishmania-infantum
#9
Rupert J Quinnell, Seyi Soremekun, Paul A Bates, Matthew E Rogers, Lourdes M Garcez, Orin Courtenay
BACKGROUND: Antibody responses to sand fly saliva have been suggested to be a useful marker of exposure to sand fly bites and Leishmania infection and a potential tool to monitor the effectiveness of entomological interventions. Exposure to sand fly bites before infection has also been suggested to modulate the severity of the infection. Here, we test these hypotheses by quantifying the anti-saliva IgG response in a cohort study of dogs exposed to natural infection with Leishmania infantum in Brazil...
January 4, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29290574/gut-microbes-egested-during-bites-of-infected-sand-flies-augment-severity-of-leishmaniasis-via-inflammasome-derived-il-1%C3%AE
#10
Ranadhir Dey, Amritanshu B Joshi, Fabiano Oliveira, Lais Pereira, Anderson B Guimarães-Costa, Tiago D Serafim, Waldionê de Castro, Iliano V Coutinho-Abreu, Parna Bhattacharya, Shannon Townsend, Hamide Aslan, Alec Perkins, Subir Karmakar, Nevien Ismail, Morgan Karetnick, Claudio Meneses, Robert Duncan, Hira L Nakhasi, Jesus G Valenzuela, Shaden Kamhawi
Leishmania donovani parasites are the cause of visceral leishmaniasis and are transmitted by bites from phlebotomine sand flies. A prominent feature of vector-transmitted Leishmania is the persistence of neutrophils at bite sites, where they protect captured parasites, leading to enhanced disease. Here, we demonstrate that gut microbes from the sand fly are egested into host skin alongside Leishmania parasites. The egested microbes trigger the inflammasome, leading to a rapid production of interleukin-1β (IL-1β), which sustains neutrophil infiltration...
December 27, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/29284049/leishmania-viannia-braziliensis-infection-in-wild-small-mammals-in-ecotourism-area-of-brazil
#11
Gabriel Barbosa Tonelli, Aline Tanure, Felipe Dutra Rego, Gustavo Mayr de Lima Carvalho, Rodolfo Stumpp, Gabriela Ribeiro Ássimos, Aldenise Martins Campos, Ana Cristina Viana Mariano da Rocha Lima, Célia Maria Ferreira Gontijo, Gustavo Fontes Paz, José Dilermando Andrade Filho
Leishmaniases are parasitic diseases transmitted to mammalian hosts by sand fly vectors (Diptera: Psychodidae). Despite the increasing occurrence of visceral and cutaneous leishmaniasis cases in urban centers, their transmission still occur primarily in wild environments and may be associated with professional activities and recreation, such as ecotourism. The Reserva Particular do Patrimônio Natural Santuário do Caraça (RPPNSC) is one of the largest ecotourism attractions in the State of Minas Gerais, Brazil, and comprises an area of environmental preservation with 11,233 hectares presenting a transitional vegetation between Cerrado and Atlantic Forest...
2017: PloS One
https://www.readbyqxmd.com/read/29248738/identification-of-immature-stages-of-phlebotomine-sand-flies-using-maldi-tof-ms-and-mapping-of-mass-spectra-during-sand-fly-life-cycle
#12
Petr Halada, Kristyna Hlavackova, Vit Dvorak, Petr Volf
The aim of the study was to evaluate the potential of matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS) for the species identification of sand flies at different developmental stages and map changes in their protein profiles during the course of whole life cycle. Specimens of six different species from laboratory colonies at larval and pupal stages were examined using MALDI-TOF MS. The protein profiles of larvae were stable from the L2 to L4 developmental stages and clearly distinguishable at the species level...
December 14, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29246180/lipophosphoglycan-polymorphisms-do-not-affect-leishmania-amazonensis-development-in-the-permissive-vectors-lutzomyia-migonei-and-lutzomyia-longipalpis
#13
Paula M Nogueira, Agna C Guimarães, Rafael R Assis, Jovana Sadlova, Jitka Myskova, Katerina Pruzinova, Jana Hlavackova, Salvatore J Turco, Ana C Torrecilhas, Petr Volf, Rodrigo P Soares
BACKGROUND: Lipophosphoglycan (LPG) is a dominant surface molecule of Leishmania promastigotes. Its species-specific polymorphisms are found mainly in the sugars that branch off the conserved Gal(β1,4)Man(α1)-PO4 backbone of repeat units. Leishmania amazonensis is one of the most important species causing human cutaneous leishmaniasis in the New World. Here, we describe LPG intraspecific polymorphisms in two Le. amazonensis reference strains and their role during the development in three sand fly species...
December 16, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29245613/-i-micropygomyia-i-i-coquillettimyia-i-i-nahua-i-sp-nov-a-new-phlebotominae-sand-fly-from-mexico-diptera-psychodidae
#14
Sergio Ibáñez-Bernal, Carlos Roberto García-Torres, Mario Vásquez-Márquez
Micropygomyia (Coquillettimyia) nahua sp. nov., is described and illustrated based on male and female characteristics. Specimens were collected in the Municipality of Naolinco, state of Veracruz, Mexico. This new species of phlebotomine sand fly has characteristics corresponding to the series vexator Fairchild of Galati, with male similar to Micropygomyia (Coquillettimyia) apache (Young & Perkins), Mi. (Coq.) oppidana (Dampf) and Mi. (Coq.) vexator (Coquillett), but recognized by the male paramere structure and simple apex of aedeagal ducts in the male, the later exception for this species series...
November 10, 2017: Zootaxa
https://www.readbyqxmd.com/read/29244144/species-composition-of-sand-flies-diptera-psychodidae-and-modeling-the-spatial-distribution-of-main-vectors-of-cutaneous-leishmaniasis-in-hormozgan-province-southern-iran
#15
Ahmad Ali Hanafi-Bojd, Mehdi Khoobdel, Moussa Soleimani-Ahmadi, Kourosh Azizi, Abbas Aghaei Afshar, Seyed Aghil Jaberhashemi, Sajjad Fekri, Reza Safari
Cutaneous Leishmaniasis (CL) is one of the main neglected vector-borne diseases in the Middle East, including Iran. This study aimed to map the spatial distribution and species composition of sand flies in Hormozgan Province and to predict the best ecological niches for main CL vectors in this area. A database that included all earlier studies on sand flies in Hormozgan Province was established. Sand flies were also collected from some localities across the province. Prediction maps for main vectors were developed using MaxEnt model...
December 13, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29224978/andean-cutaneous-leishmaniasis-andean-cl-uta-in-peru-and-ecuador-the-vector-lutzomyia-sand-flies-and-reservoir-mammals
#16
REVIEW
Yoshihisa Hashiguchi, Eduardo A Gomez L, Abraham G Cáceres, Lenin N Velez, Nancy V Villegas, Kazue Hashiguchi, Tatsuyuki Mimori, Hiroshi Uezato, Hirotomo Kato
The vector Lutzomyia sand flies and reservoir host mammals of the Leishmania parasites, causing the Andean cutaneous leishmaniasis (Andean-CL, uta) in Peru and Ecuador were thoroughly reviewed, performing a survey of literatures including our unpublished data. The Peruvian L. (V.) peruviana, a principal Leishmania species causing Andean-CL in Peru, possessed three Lutzomyia species, Lu. peruensis, Lu. verrucarum and Lu. ayacuchensis as vectors, while the Ecuadorian L. (L.) mexicana parasite possessed only one species Lu...
December 7, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29221524/leishmaniasis-who-uses-personal-protection-among-military-personnel-in-colombia
#17
Aida M González, María Teresa Solís-Soto, Katja Radon
BACKGROUND: Leishmaniasis is common in Colombia, negatively affecting the health of military personnel active in endemic areas. The disease is transmitted by sand fly bites. Therefore, during duty, use of long-sleeved uniforms and other clothes treated with permethrin and application of mosquito repellent are important personal preventive measures. OBJECTIVE: The objective of this study was to assess personal and occupational factors associated with the use of personal protection in male soldiers deployed to Leishmaniasis-endemic areas...
May 2017: Annals of Global Health
https://www.readbyqxmd.com/read/29206076/assessment-of-the-ability-of-v920-recombinant-vesicular-stomatitis-zaire-ebolavirus-vaccine-to-replicate-in-relevant-arthropod-cell-cultures-and-vector-species
#18
Nicholas A Bergren, Megan R Miller, Thomas P Monath, Rebekah C Kading
V920, rVSVΔG-ZEBOV-GP, is a recombinant vesicular stomatitis-Zaire ebolavirus vaccine which has shown an acceptable safety profile and provides a protective immune response against Ebola virus disease (EVD) induced by Zaire ebolavirus in humans. The purpose of this study was to determine whether the V920 vaccine is capable of replicating in arthropod cell cultures of relevant vector species and of replicating in live mosquitoes. While the V920 vaccine replicated well in Vero cells, no replication was observed in Anopheles or Aedes mosquito, Culicoides biting midge, or Lutzomyia sand fly cells, nor in live Culex or Aedes mosquitoes following exposure through intrathoracic inoculation or feeding on a high-titer infectious blood meal...
December 5, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29202202/phlebotomus-halepensis-diptera-psychodidae-vectorial-capacity-in-afyon-and-nigde-province-turkey
#19
Hakan Kavur, Hüseyin Arikan, Yusuf Ozbel
Leishmaniasis is a one of the vector-borne diseases and has two clinical forms in Turkey: cutaneous and visceral. The aim of this study was to determine the sand fly fauna in Afyon and Nigde provinces where endemic foci of cutaneous leishmaniasis (CL) in Turkey. In Afyon, 2,259 sand flies were collected in 73 locations in August 2009 and August 2010, using CDC light traps. In total, eight Phlebotomus species were identified; Phlebotomus halepensis (47.41%), Phlebotomus papatasi (31.42%), Phlebotomus neglectus/syriacus (9...
November 30, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29187956/-leg-ulcer-revealing-cutaneous-leishmaniasis
#20
Elalouani Elmehdi, Bachar Zerkly
Leishmaniases are parasitic diseases occurring in endemic tropical and subtropical areas and caused by protozoa of the genus leishmania, transmitted by a diptera (sand fly). We here report a case of topical cutaneous leishmaniasis discovered in a 15-year old boy with painless ulcer on his left leg, who had been staying in South Africa. Clinical examination showed painless non-itchy ulcer, occurred 1 month before, on the antero-internal part of his left leg with crusts and scars caused by insect bites, all evolving in a context of patient's general health status, without mucosal or visceral lesions...
2017: Pan African Medical Journal
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