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Acta Tropica

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https://www.readbyqxmd.com/read/28545897/resveratrol-relieves-angiostrongylus-cantonensis-induced-meningoencephalitis-by-activating-sirtuin-1
#1
An-Chih Chen, Ling-Yuh Shyu, Yue-Loong Hsin, Ke-Min Chen, Shih-Chan Lai
Resveratrol, a natural herbal compound found in high levels in grapes and red wine, is frequently used as activator of sirtuin-1. This study investigated the potential function of sirtuin-1 in regulating angiostrongyliasis meningoencephalitis in resveratrol-treated mice. Mice were subjected to meningoencephalitis to study the protective effect of resveratrol against meningoencephalitis and investigate the effects of sirtuin-1 activation on brain. Results demonstrated that sirtuin-1 level decreased in mice with meningoencephalitis and significantly increased in resveratrol-treated mice...
May 22, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28545896/morphological-identification-and-dna-barcoding-of-a-new-species-of-parabrachiella-siphonostomatoida-lernaeopodidae-with-aspects-of-their-intraspecific-variation
#2
M M Montes, R Castro-Romero, S R Martorelli
We present a detailed morphological description and a DNA barcoding of Parabrachiella platensis n. sp. collected from Mugil liza Valenciennes in Samborombon Bay (Buenos Aires, Argentina). This new species was compared with two Parabrachiella species parasitic on mugilids: Parabrachiella exilis (Shiino, 1956) and Parabrachiella mugilis (Kabata, Raibaut et Ben Hassine, 1971). Parabrachiella platensis n. sp. differs from those species in the shape of posterior processes, the anal slit with two pairs of bipartite papillae, the size of cephalothorax, the trunk, the maxilla, the microhabitat on the host, and the lack of caudal rami...
May 22, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28545895/molluscicidal-potential-of-heterorhabditis-baujardi-rhabditida-heterorhabditidae-strain-lpp7-on-lymnaea-columella-gastropoda-pulmonata-an-alternative-for-biological-control-of-fasciolosis
#3
Victor Menezes Tunholi, Priscila de Oliveira Lorenzoni, Ygor Henrique da Silva, Vinícius Menezes Tunholi-Alves, Jankerle Neves Boeloni, Maria Aparecida da Silva, Caio Oliveira Monteiro, Márcia Cristina de Azevedo Prata, Jairo Pinheiro da Silva, Isabella Vilhena Freire Martins
This study elucidated for the first time, under laboratory conditions, the susceptibility of Lymnaea columella to infective juveniles of Heterorhabditis baujardi LPP7. Exposure to the nematodes induced an average mortality rate of 66.66% in the population of L. columella, with the highest values attained from the second week after exposure onward. In addition, all the reproductive parameters analyzed (total number of eggs, number of egg masses, number of eggs laid/snail, embryo hatching rate and content of galactogen stored in the albumen gland) changed as a result of the infection...
May 22, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28535905/rickettsia-rickettsii-infecting-rhipicephalus-sanguineus-sensu-latu-latreille-1806-in-high-altitude-atlantic-forest-fragments-ceara-state-brazil
#4
Arannadia Barbosa Silva, Myrian Morato Duarte, Robson da Costa Cavalcante, Stefan Vilges de Oliveira, Vinicius Figueiredo Vizzoni, Ana Íris de Lima Duré, Felipe Campos de Melo Iani, Erik Machado-Ferreira, Gilberto Salles Gazêta
In Brazil, Spotted Fever (SF) is caused by Rickettsia rickettsii and Rickettsia parkeri strain Atlantic Forest. In recent years, several human cases of a milder SF have been reported from the Maciço de Baturité region of Ceará State. Previous studies in this region found R. parkeri strain Atlantic Forest to be present in Rhipicephalus sanguineus sensu lato and Amblyomma ovale ticks. The present study isolated and identified the Rickettsia spp. present in this new endemic area in Brazil. In March 2015, R...
May 20, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28527882/new-epidemiological-pattern-of-cutaneous-leishmaniasis-in-two-pre-saharan-arid-provinces-southern-morocco
#5
Mouad Ait Kbaich, Idriss Mhaidi, Abdelkacem Ezzahidi, Nouredine Dersi, Adil El Hamouchi, Myriam Riyad, Khadija Akarid, Meryem Lemrani
Three Leishmania species are responsible of cutaneous leishmaniasis (CL) in Morocco. Zoonotic CL due to Leishmania major and Leishmania infantum, the first is known as established in the eastern arid regions, whereas the latter evolves sporadically, especially in the North. While Leishmania tropica, classically considered anthroponotic, is endemic in the semi-arid regions and is largely distributed throughout the country. The aim of this study was to identify the Leishmania species causing CL in two Provinces in arid pre-Saharan region known as zoonotic CL foci, and to contribute an update to the national data concerning the distribution of Leishmania species in both regions...
May 17, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28526427/atypical-presentations-of-cutaneous-leishmaniasis-a-systematic-review
#6
REVIEW
Camilla Barros Meireles, Laís Chaves Maia, Gustavo Coelho Soares, Ilara Parente Pinheiro Teodoro, Maria do Socorro Vieira Gadelha, Cláudio Gleidiston Lima da Silva, Marcos Antonio Pereira de Lima
Cutaneous Leishmaniasis (CL) is endemic in 88 countries, showing relevant prevalences. The aim of this study was to perform a systematic review on atypical lesions of CL around the world, addressing clinico-epidemiological, immunological and therapeutic aspects. A search of the literature was conducted via electronic databases Scopus and PubMed for articles published between 2010 and 2015. The search terms browsed were "cutaneous leishmaniasis", "atypical" and "unusual". Based on the eligibility criteria, 34 out of 122 articles were included in the final sample...
May 17, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28522274/relationship-between-exposure-to-malaria-and-haemoglobin-level-of-children-2-9-years-old-in-low-malaria-transmission-settings
#7
Zewdie Birhanu, Yemane Ye-Ebiyo Yihdego, Daniel Emana, Damtew Feyissa, Silashi Kenate, Estifanos Kebede, Kefelegn Getahun, Delenasaw Yewhalaw
In the context of reduced transmission of malaria, it is essential to examine the association between exposure to malaria and haemoglobin level. This study measured the Haemoglobin level of children 2-9 years of age and examined its association with malariometric indices. A cross sectional study was conducted, during June 2016, on 763 children 2-9 years old, recruited from ten sites representing different malaria transmission settings in Ethiopia. Haemoglobin concentration was determined using HemoCue analyzer...
May 15, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28522273/trypanosoma-cruzi-over-the-ocean-insular-zones-of-chile-with-presence-of-infected-vector-mepraia-species
#8
Ninette Rives-Blanchard, Fernando Torres-Pérez, Silvia Ortiz, Aldo Solari, Ricardo Campos-Soto
Chagas disease is one of the main zoonosis mediated by vectors in America. The etiologic agent Trypanosoma cruzi infects different mammals and is transmitted principally by the subfamily Triatominae. Mepraia is a genus endemic to Chile, responsible for transmitting T. cruzi in the sylvatic cycle. Mepraia includes three species: M. gajardoi and M. parapatrica inhabit coastal areas, while M. spinolai inhabits coastal and interior valleys. Previous studies reported the occurrence of Mepraia in Pan de Azucar Island, currently classified as M...
May 15, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28511777/expression-of-interleukin-1%C3%AE-and-interleukin-6-in-leprosy-reactions-in-patients-with-human-immunodeficiency-virus-coinfection
#9
Carla Andréa Avelar Pires, Juarez Antônio Simões Quaresma, Tinara Leila de Souza Aarão, Jorge Rodrigues de Souza, Geraldo Mariano Moraes Macedo, Fernando Octávio Machado Jucá Neto, Marília Brasil Xavier
Previous studies suggest that coinfection of leprosy and human immunodeficiency virus (HIV) does not decrease the frequency and intensity of leprosy reactions. However, the immunological aspects of leprosy reactions in coinfected patients remain obscure, with a limited number of studies showing contradictory results. Observational study using tissue samples collected during leprosy reactions from 15 patients coinfected with leprosy and HIV and from 15 patients with leprosy alone. Patients were part of a prior larger cohort study of leprosy patients with and without HIV coinfection...
May 13, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28506795/parallel-elisas-using-crude-soluble-antigen-and-excretory-secretory-antigen-for-improved-serodiagnosis-of-amoebic-liver-abscess
#10
Weng-Kin Wong, Phiaw-Chong Foo, Alfonso Olivos-Garcia, Rahmah Noordin, Zeehaida Mohamed, Nurulhasanah Othman, Ling-Ling Few, Boon-Huat Lim
Crude soluble antigen (CSA) produced from Entamoeba histolytica trophozoite is conventionally used for serodiagnosis of invasive amoebiasis. However, high background seropositivities by CSA-assay in endemic areas complicate the interpretation of positive result in clinical settings. Instead, incorporating a second assay which indicates active or recent infection into the routine amoebic serology could possibly complement the limitations of CSA-assay. Hence, the present study aimed to evaluate the diagnostic efficacies of indirect ELISAs using CSA and excretory-secretory antigen (ESA) for serodiagnosis of amoebic liver abscess (ALA)...
May 12, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28506794/life-shortening-wolbachia-infection-reduces-population-growth-of-aedes-aegypti
#11
Eunho Suh, David R Mercer, Stephen L Dobson
Wolbachia bacteria are being introduced into natural populations of vector mosquitoes, with the goal of reducing the transmission of human diseases such as Zika and dengue fever. The successful establishment of Wolbachia infection is largely dependent on the effects of Wolbachia infection to host fitness, but the effects of Wolbachia infection on the individual life-history traits of immature mosquitoes can vary. Here, the effects of life-shortening Wolbachia (wMelPop) on population growth of infected individuals were evaluated by measuring larval survival, developmental time and adult size of Aedes aegypti in intra- (infected or uninfected only) and inter-group (mixed with infected and uninfected) larval competition assays...
May 12, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28506793/frequency-and-risk-factors-analysis-of-escherichia-coli-o157-h7-in-bali-cattle
#12
I Wayan Suardana, Dyah Ayu Widiasih, Widagdo Sri Nugroho, Michael Haryadi Wibowo, I Nyoman Suyasa
Cattle are known as the main reservoir of zoonotic agents verocytotoxin-producing Escherichia coli. These bacteria are usually isolated from calves with diarrhea and/or mucus and blood. Tolerance of these agents to the environmental conditions will strengthen of their transmission among livestock. A total of 238 cattle fecal samples from four sub-districts in Badung, Bali were used in this study. Epidemiological data observed include cattle age, sex, cattle rearing system, the source of drinking water, weather, altitude, and type of cage floor, the cleanliness of cage floor, the slope of cage floor, and the level of cattle cleanliness...
May 12, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28502644/leishmania-v-braziliensis-infecting-bats-from-pantanal-wetland-brazil-first-records-for-platyrrhinus-lineatus-and-artibeus-planirostris
#13
Eduardo de Castro Ferreira, Agnes Antônio Sampaio Pereira, Maurício Silveira, Carina Margonari, Glaucia Elisete Barbosa Marcon, Adriana de Oliveira França, Ludiele Souza Castro, Marcelo Oscar Bordignon, Erich Fischer, Walfrido Moraes Tomas, Maria Elizabeth Cavalheiros Dorval, Célia Maria Ferreira Gontijo
In the New World genus Leishmania parasites are etiological agents of neglected zoonoses known as leishmaniasis. Its epidemiology is very complex due to the participation of several species of sand fly vectors and mammalian hosts, and man is an accidental host. Control is very difficult because of the different epidemiological patterns of transmission observed. Studies about Leishmania spp. infection in bats are so scarce, which represents a large gap in knowledge about the role of these animals in the transmission cycle of these pathogens, especially when considering that Chiroptera is one of the most abundant and diverse orders among mammals...
May 11, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28502643/are-brucellosis-q-fever-and-melioidosis-potential-causes-of-febrile-illness-in-madagascar
#14
Ides Boone, Klaus Henning, Angela Hilbert, Heinrich Neubauer, Vera von Kalckreuth, Denise Myriam Dekker, Norbert Georg Schwarz, Gi Deok Pak, Andreas Krüger, Ralf Matthias Hagen, Hagen Frickmann, Jean Noël Heriniaina, Raphael Rakotozandrindrainy, Jean Philibert Rakotondrainiarivelo, Tsiry Razafindrabe, Benedikt Hogan, Jürgen May, Florian Marks, Sven Poppert, Sascha Al Dahouk
Brucellosis, Q fever and melioidosis are zoonoses, which can lead to pyrexia. These diseases are often under-ascertained and underreported because of their unspecific clinical signs and symptoms, insufficient awareness by physicians and public health officers and limited diagnostic capabilities, especially in low-resource countries. Therefore, the presence of Brucella spp., Coxiella burnetii and Burkholderia pseudomallei was investigated in Malagasy patients exhibiting febrile illness. In addition, we analyzed zebu cattle and their ticks as potential reservoirs for Brucella and C...
May 11, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28502642/molecular-detection-of-tick-borne-pathogens-in-wild-red-foxes-vulpes-vulpes-from-central-italy
#15
Valentina Virginia Ebani, Guido Rocchigiani, Simona Nardoni, Fabrizio Bertelloni, Violetta Vasta, Roberto Amerigo Papini, Ranieri Verin, Alessandro Poli, Francesca Mancianti
Spleen samples from 153 red foxes, shot during regular hunting season in the province of Pisa (Central Italy), were examined to detect DNA of Anaplasma phagocytophilum, Ehrlichia canis, Coxiella burnetii, Francisella tularensis, Hepatozoon canis and Babesia sp./Theileria sp. DNA of vector-borne pathogens was detected in 120 (78.43%; 95% CI: 71.06-84.66%) foxes. Specifically, 75 (49%; 95% CI: 40.86-57.22%) animals scored PCR-positive per H. canis, 68 (44.44%; 95% CI: 36.42-52.69%) for E. canis, 35 (22.88%; 95% CI: 16...
May 11, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28501450/exploring-prognosis-in-chronic-relapsing-visceral-leishmaniasis-among-hiv-infected-patients-circulating-leishmania-dna
#16
Gláucia Fernandes Cota, Marcos Roberto de Sousa, Tália Santana Machado de Assis, Bruna Fernandes Pinto, Ana Rabello
BACKGROUND: Visceral leishmaniasis (VL) affecting HIV-infected patients is considered a challenging condition because of its high mortality and relapse rates. The approach of this condition is still surrounded by many uncertainties, especially regarding the criteria to institute and discontinue secondary prophylaxis for VL. The aim of this study was to evaluate the Leishmania parasitism kinetic assessed by polymerase chain reaction (PCR) as a possible tool in the prognostic assessment in a context in which patients are receiving highly active antiretroviral therapy and secondary prophylaxis...
May 10, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28499908/identification-of-novel-mammalian-hosts-and-brazilian-biome-geographic-distribution-of-trypanosoma-cruzi-tciii-and-tciv
#17
Juliana Helena S Barros, Samanta Cristina C Xavier, Daniele Bilac, Valdirene Santos Lima, Maria Augusta Dario, Ana Maria Jansen
Trypanosoma cruzi is a parasitic protozoan responsible for Chagas disease. Seven different Discrete Typing Units (DTUs) of T. cruzi are currently identified in nature: TcI-TcVI, and TcBat whose distribution patterns in nature, hosts/reservoirs and eco-epidemiological importance are still little known. Here, we present novel data on the geographic distribution and diversity of mammalian hosts and vectors of T. cruzi DTUs TcIII and TcIV. In this study, we analyzed 61 T. cruzi isolates obtained from 18 species of mammals (five orders) and two Hemiptera genera...
May 10, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28495405/trypanosoma-cruzi-i-towards-the-need-of-genetic-subdivision-part-ii
#18
REVIEW
Juan David Ramírez, Carolina Hernández
Chagas disease is a complex zoonosis caused by the kinetoplastid parasite Trypanosoma cruzi. This protozoan exhibits remarkable genetic diversity evinced in at least six Discrete Typing Units (DTUs) with the foreseen emergence of a genotype associated to bats (TcBat). T. cruzi I is the DTU with the broadest geographical distribution and associated to severe cardiomyopathies. In 2011, we published a review questioning the need for genetic subdivision within TcI. However, after six years of intensive research herein, we attempted to determine if TcI should be subdivided or not in the light of the current genetic, biological, clinical and ecological data...
May 8, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28495404/does-aedes-albopictus-diptera-culicidae-play-any-role-in-usutu-virus-transmission-in-northern-italy-experimental-oral-infection-and-field-evidences
#19
Arianna Puggioli, Paolo Bonilauri, Mattia Calzolari, Davide Lelli, Marco Carrieri, Sandra Urbanelli, Dubravka Pudar, Romeo Bellini
This study evaluated the vector competence of Aedes albopictus in transmitting USUV after oral infection under laboratory conditions. Ae. albopictus showed a low vector competence for USUV, although the positive body sample found with a very high number of viral copies at one week post infection indicates that a replication in the mosquito body can occur, and that USUV can escape the midgut barrier. Field data from an extensive entomological arboviruses surveillance program showed a relevant incidence of Ae...
May 8, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28495403/effect-of-insecticide-treated-bed-nets-on-house-entry-by-malaria-mosquitoes-the-flight-response-recorded-in-a-semi-field-study-in-kenya
#20
Jeroen Spitzen, Teun Koelewijn, W Richard Mukabana, Willem Takken
Insecticide-treated nets are currently a major tool to reduce malaria transmission. Their level of repellency affects contact of the mosquito with the net, but may also influence the mosquito's entry into the house. The response of host-seeking malaria mosquitoes approaching the eave of an experimental house was recorded within a large screen house. We compared entry- and exit rates in relation to the presence in the house of different insecticide-treated bed nets (ITNs) with an untreated net. Mosquitoes were lured towards the house by dispensing a synthetic host-odour blend from within the net in the house...
May 8, 2017: Acta Tropica
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