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Acta Tropica

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https://www.readbyqxmd.com/read/29462598/using-adult-aedes-aegypti-females-to-predict-areas-at-risk-for-dengue-transmission-a-spatial-case-control-study
#1
Maisa Carla Pereira Parra, Eliane Aparecida Fávaro, Margareth Regina Dibo, Adriano Mondini, Álvaro Eduardo Eiras, Erna Geessien Kroon, Mauro Martins Teixeira, Mauricio Lacerda Nogueira, Francisco Chiaravalloti-Neto
INTRODUCTION: Traditional indices for measuring dengue fever risk in a given area are based on the immature forms of the vector (larvae and pupae surveys). However, this is inefficient because only adult female mosquitoes actually transmit the virus. Based on these assumptions, our objective was to evaluate the association between an entomological index obtained from adult mosquito traps and the occurrence of dengue in a hyperendemic area. Additionally, we compared its cost to that of the Breteau Index (BI)...
February 17, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29457993/leptospira-seroprevalence-in-animals-in-the-caribbean-region-a-systematic-review
#2
REVIEW
Nicola Pratt, Sreekumari Rajeev
This systematic review summarises the data published on the Leptospira seroprevalence, serovar diversity and distribution among animal species in the Caribbean region. Following Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines, and checklist, relevant articles were identified and data were extracted and recorded. The review provided Leptospira seroprevalence data from 16 Caribbean islands (Barbados, Trinidad, Grenada, Puerto Rico, Saint Croix, St. Kitts and Nevis, Jamaica, Antigua, Carriacou, Dominica, Guadalupe, Martinique, Monserrat, St...
February 16, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29457992/ground-ultra-low-volume-ulv-space-spray-applications-for-the-control-of-wild-sand-fly-populations-psychodidae-phlebotominae-in-europe
#3
Alexandra Chaskopoulou, Michael Miaoulis, Javid Kashefi
The Phlebotomus sand flies are considered an important vector of both canine and human leishmaniasis. Current measures for sand fly control include mostly indoor interventions, such as residual spraying of dwellings (IRS) to target endophilic sand fly species with very limited number of vector control tools for outdoor interventions against exophilic sand flies. In this study we investigated the efficacy of ground ultra low volume (ULV) space spray applications of a deltamethrin based product against field populations of P...
February 16, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29454735/metaperiodate-deglycosylation-of-strongyloides-venezuelensis-larvae-immunochemical-characterization-and-antigen-production-for-human-strongyloidiasis-diagnosis
#4
Henrique Tomaz Gonzaga, Daniela da Silva Nunes, Vanessa da Silva Ribeiro, Nágilla Daliane Feliciano, Jair Pereira da Cunha-Junior, Julia Maria Costa-Cruz
Strongyloidiasis is an important helminthiasis affecting million people worldwide. The aim of this study was to use sodium metaperiodate (MP) treatment to immunochemically characterize Strongyloides venezuelensis filariform larvae and use MP-treated heterologous antigen to detect IgG and subclasses in serum. Samples from individuals with definitive diagnosis of strongyloidiasis (n = 50), other parasitic diseases (n = 60) and negative endemic (n = 50) were tested. TG-ROC and two-way ANOVA were applied. MP-treatment resulted on differential localization of carbohydrates at larval structure and no carbohydrate content in saline extract (SE)...
February 15, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29454734/management-of-arthropod-vector-data-social-and-ecological-dynamics-facing-the-one-health-perspective
#5
REVIEW
Giovanni Benelli, Mary Frances Duggan
Emerging infectious diseases (EIDs) are spread by direct and/or indirect contacts between a pathogen or parasite and their hosts. Arthropod vectors have evolved as excellent bloodsuckers, providing an elegant transportation mode for a wide number of infectious agents. The nature of pathogen and parasite transfer and the models used to predict how a disease might spread are magnified in complexity when an arthropod vector is part of the disease cycle. One Health is a worldwide strategy for expanding interdisciplinary collaborations and communications in all aspects of health care for humans, animals and the environment...
February 15, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29454733/characterization-of-fungus-microbial-diversity-in-healthy-and-diarrheal-yaks-in-gannan-region-of-tibet-autonomous-prefecture
#6
Kun Li, Khalid Mehmood, Hui Zhang, Xiong Jiang, Muhammad Shahzad, Xiaoqian Dong, Jiakui Li
Diarrhea is a serious epidemic in yaks on Qinghai Tibet plateau, but the exact pathogen is not confirmed. Diarrhea is related to the changes in diversity of intestinal flora. The current study herein is performed for high-throughput sequencing of fungus microbial diversity in healthy adult yaks, diarrheal adult yaks and diarrheal yak calves in Gannan Tibetan Autonomous Prefecture. A total 446726 optimized sequences were achieved. Over 250 OTUs in species level have been indentified for each sample. The Shannon and Simpson index revealed that there was no visible difference in the flora between different yak groups (p > 0...
February 15, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29454732/genetic-interaction-and-diversity-of-the-families-libellulidae-and-gomphidae-through-coi-gene-from-china-and-pakistan
#7
Saif Ul Islam, Muhammad Qasim, Wenzhong Lin, Waqar Islam, Muhammad Arif, Habib Ali, Zujian Wu
A total of 300 dragonflies (Odonata) were collected from six different localities of China and Pakistan. Sixty seven representative samples were selected to sequence their mitochondrial cytochrome oxidase subunit I (COI). An examination of the resultant sequences identified 21 different dragonfly species, belonging to 15 distinct genera, two families, Libellulidae and Gomphidae. Sequence alignment was executed using Clustal-W in BioEdit v6. The phylogenetic tree was constructed through Neighbor-joining method by using Jukes-Cantor model, and genetic divergence was calculated via Kimura 2-parameter using MEGA7, while Genetic diversity was calculated by DnaSP v5...
February 15, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29453951/a-new-species-of-simulium-simulium-diptera-simuliidae-from-genting-highlands-malaysia
#8
Zubaidah Ya'Cob, Hiroyuki Takaoka, Van Lun Low, Mohd Sofian-Azirun
Simulium (Simulium) rasuli sp. nov. is described from two females collected by a Malaise trap in Genting Highlands, Peninsular Malaysia. This new species is placed in the Simulium christophersi species-group of the subgenus Simulium. The female of this new specie is characterized by the scutum with three longitudinal vittae, dark legs, claw with a small subbasal tooth, and ovipositor valve triangular with its inner margin nearly straight. This new species is distinguished in the female from all the six named species of the species-group by the entirely brownish-black femora and tibiae...
February 14, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29453950/towards-elimination-of-schistosomiasis-after-5000-years-of-endemicity-in-egypt
#9
REVIEW
Iman F Abou-El-Naga
Schistosomiasis is a snail-transmitted infectious disease caused by a long lasting infection with a blood fluke of the genus Schistosoma. S. haematobium and S. mansoni are the species endemic in Egypt. The country has been plagued and seriously suffered from schistosomiasis over the past 5000 years. Great strides had been done in controlling the disease since 1922. The history, epidemiology and the different control approaches were reviewed. Currently, Egypt is preparing towards schistosomiasis elimination by 2020...
February 14, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29453949/babesia-bovis-in-and-around-jimma-town-southwestern-ethiopia
#10
LETTER
Bersissa Kumsa
No abstract text is available yet for this article.
February 14, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29452114/the-biodiversity-of-black-flies-diptera-simuliidae-in-indonesia
#11
Upik Kesumawati Hadi, Hiroyuki Takaoka
Indonesia is one of the megadiversity country in the world endowed with rich and unique biodiversity insects such as blackflies species (Diptera: Simuliidae). Blackflies are found almost anywhere with running water suitable as habitat for the immature stages. This family is one of the most important groups of blood-sucking insects. This study collates the the records of Simulium (Diptera: Simuliidae) in previous publications related fauna of Indonesia. Based on the results of this study, there were 124 species of blackflies in Indonesian Archipelago...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29452113/technological-innovation-strategies-for-the-specific-treatment-of-chagas-disease-based-on-benznidazole
#12
REVIEW
Leslie Raphael de Moura Ferraz, Alinne Élida Gonçalves Alves, Débora Dolores Souza da Silva Nascimento, Isabela Araújo E Amariz, Aline Silva Ferreira, Salvana Priscylla Manso Costa, Larissa Araújo Rolim, Ádley Antonini Neves de Lima, Pedro José Rolim Neto
Caused by Trypanosoma cruzi, Chagas disease is responsible for public health problems greater in magnitude than those attributed to malaria, schistosomiasis, or leishmaniasis. A factor in the socioeconomic development of poor countries, Chagas disease can cause death due to a high parasitic burden during its acute phase due and irreversible damage in organs such as the heart, esophagus, and colon during its chronic phase, even when the number of parasites is minimal. For treating Chagas disease, benznidazole (BNZ) remains the drug of choice and, in Latin America, the only drug on the market for treating the disease...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29452112/molecular-diagnosis-of-protozoan-parasites-by-recombinase-polymerase-amplification
#13
A Castellanos-Gonzalez, A C White, P Melby, B Travi
Infections caused by protozoan parasites affect millions of people around the world. Traditionally, diagnosis was made by microscopy, which is insensitive and in some cases not specific. Molecular methods are highly sensitive and specific, but equipment costs and personnel training limit its availability only to specialized centers, usually far from populations with the highest risk of infection. Inexpensive methods that can be applied at the point of care (POC), especially in places with limited health infrastructure, would be a major advantage...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29452111/recent-progress-in-drug-targets-and-inhibitors-towards-combating-leishmaniasis
#14
REVIEW
Vijayakumar Saravanan, Pradeep Das
Lesihmaniasis is one of the major neglected tropical disease caused by the parasite of the genus Leishmania. The disease has more than one clinical forms and the visceral form is considered fatal. With the lack of potential vaccine, chemotherapy is the major treatment source considered for the control of the disease in the infected people. Drugs including amphotericin B and miltefosine are widely used for the treatment, however, development of resistance by the parasite towards the administered drug and high-toxicity of the drug are of major concern...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29452110/exploring-the-impact-of-house-screening-intervention-on-entomological-indices-and-incidence-of-malaria-in-arba-minch-town-southwest-ethiopia-a-randomized-control-trial
#15
Solomon Kinde Getawen, Temesgen Ashine, Fekadu Massebo, Daniel Woldeyes, Bernt Lindtjørn
House is the major site for malaria infection where most human-vector contact takes place. Hence, improving housing might reduce the risk of malaria infection by limiting house entry of vectors. This study aimed to explore the impact of screening doors and windows with wire meshes on density and entomological inoculation rate (EIR) of malaria vector, and malaria incidence, and assess the acceptability, durability, and cost of the intervention. The susceptibility status of malaria vector was also assessed. A two-arm randomized trial was done in Arba Minch Town, southwest Ethiopia...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29452109/dengue-infection-in-patients-with-febrile-illness-and-its-relationship-to-climate-factors-a-case-study-in-the-city-of-jeddah-saudi-arabia-for-the-period-2010-2014
#16
Anwar M Hashem, Turki Abujamel, Rowa Alhabbab, Mansour Almazroui, Esam I Azhar
Dengue is an important global arboviral disease with expanding geographical range. It is a major public health concern in Western Saudi Arabia since its first detection in the city of Jeddah in 1994. In this retrospective study, we examined dengue incidence among febrile patients suspected for acute dengue infection at King Abdulaziz University Hospital, Jeddah from 2010 to 2014 and we tried to determine the effect of climate factors on dengue incidence in the city. Acute dengue incidence rates among clinically suspected patients showed annual variation with a range from 29...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29448008/insecticidal-activity-putative-binding-proteins-and-histopathological-effects-of-bacillus-thuringiensis-vip3-459-toxin-on-the-lepidopteran-pest-ectomyelois-ceratoniae
#17
Hanen Boukedi, Slim Tounsi, Lobna Abdelkefi-Mesrati
The carob moth, Ectomyelois ceratoniae, is an important agricultural pest that is susceptible to the Vip3(459) protein. The insecticidal activity, evaluated against this lepidopteran pest, displayed an LC 50 value of about 28 ng/cm 2 .The investigation of the mode of action of this B. thuringiensis protein demonstrated that the active form of this toxin bound to putative receptors in the BBMV of E. ceratoniae. Ligand blotting experiment proved that Vip3(459) specifically bound to two proteins of about 53 and 57 kDa, located on the midgut...
February 12, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29408406/dna-barcoding-for-identifying-synanthropic-flesh-flies-diptera-sarcophagidae-of-colombia
#18
Eliana Buenaventura, César Valverde-Castro, Marta Wolff, Omar Triana-Chavez, Andrés Gómez-Palacio
The first step for a successful use of any insect as indicator in forensic sciences is providing a precise taxonomic identification at species level. Due to morphology-based identification of Sarcophaginae flies (Diptera, Sarcophagidae) is often difficult and requires strong taxonomic expertise, their use as forensic indicators has been limited. Consequently, molecular-based approaches have been accepted as alternative means of identification. Thus, we aimed testing the efficiency of the barcode region of the mitochondrial cytochrome oxidase subunit I (COI) gene for identification of synanthropic flesh flies of several species of the genera Peckia, Oxysarcodexia, Ravinia, and Tricharaea collected in Colombia...
February 3, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29410302/the-blackfly-vectors-and-transmission-of-onchocerca-volvulus-in-mahenge-south-eastern-tanzania
#19
Adam Hendy, Andreas Krüger, Kenneth Pfarr, Jacobus De Witte, Addow Kibweja, Upendo Mwingira, Jean-Claude Dujardin, Rory Post, Robert Colebunders, Sarah O'Neill, Akili Kalinga
The Mahenge Mountains onchocerciasis focus in south eastern Tanzania was historically one of the most heavily infected areas in the country. The vectors of Onchocerca volvulus are mainly Simulium damnosum complex blackflies, but a species of the Simulium neavei group may also contribute to transmission in some areas. The only detailed studies of parasite transmission in Mahenge were conducted in the late 1960s. The taxonomy of the S. damnosum complex has since been revised and onchocerciasis control through annual community directed treatment with ivermectin (CDTI) commenced in 1997...
February 1, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29409854/genetic-and-haplotype-analyses-targeting-cytochrome-b-gene-of-plasmodium-knowlesi-isolates-of-malaysian-borneo-and-peninsular-malaysia
#20
Eric Tzyy Jiann Chong, Joveen Wan Fen Neoh, Tiek Ying Lau, Yvonne Ai-Lian Lim, Kek Heng Chua, Ping-Chin Lee
Malaria is a notorious disease which causes major global morbidity and mortality. This study aims to investigate the genetic and haplotype differences of Plasmodium knowlesi (P. knowlesi) isolates in Malaysian Borneo and Peninsular Malaysia based on the molecular analysis of the cytochrome b (cyt b) gene. The cyt b gene of 49 P. knowlesi isolates collected from Sabah, Malaysian Borneo and Peninsular Malaysia was amplified using PCR, cloned into a commercialized vector and sequenced. In addition, 45 cyt b sequences were retrieved from humans and macaques bringing to a total of 94 cyt b gene nucleotide sequences for phylogenetic analysis...
February 1, 2018: Acta Tropica
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