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Parasitology Research

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https://www.readbyqxmd.com/read/28550645/new-entamoeba-group-in-howler-monkeys-alouatta-spp-associated-with-parasites-of-reptiles
#1
Claudia Villanueva-García, Elías José Gordillo-Chávez, Carlos Baños-Ojeda, Emilio Rendón-Franco, Claudia Irais Muñoz-García, Julio César Carrero, Alex Córdoba-Aguilar, Pablo Maravilla, José Galian, Fernando Martínez-Hernández, Guiehdani Villalobos
Our knowledge of the parasite species present in wildlife hosts is incomplete. Protozoans such as amoebae of the genus Entamoeba infect a large variety of vertebrate species, including NHPs. However, traditionally, their identification has been accomplished through microscopic evaluation; therefore, amoeba species have not always been identified correctly. We searched for Entamoeba spp. using a fragment of the small subunit rDNA in free-ranging howler monkeys (Alouatta palliata and A. pigra) from southeast Mexico...
May 27, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28550644/high-genetic-diversity-of-giardia-duodenalis-assemblage-e-in-pre-weaned-dairy-calves-in-shanghai-china-revealed-by-multilocus-genotyping
#2
Xiaolan Wang, Min Cai, Wen Jiang, Yuping Wang, Yue Jin, Na Li, Yaqiong Guo, Yaoyu Feng, Lihua Xiao
Giardia duodenalis is a common parasitic protozoan in human and animals. Epidemiological and molecular data are available from dairy cattle in many industrialized countries, but information on genetic diversity at multiple genetic loci is limited, especially in pre-weaned dairy calves. In this study, 818 fecal specimens were collected from five dairy cattle farms located in suburbs of Shanghai, China, with two to five samplings per farm. G. duodenalis assemblages and subtypes were determined using multilocus genotyping (MLG) at the β-giardin (bg), glutamate dehydrogenase (gdh), and triosephosphate isomerase (tpi) loci...
May 26, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28540508/molecular-characterization-of-blastocystis-sp-in-captive-wild-animals-in-qinling-mountains
#3
G H Zhao, X F Hu, T L Liu, R S Hu, Z Q Yu, W B Yang, Y L Wu, S K Yu, J K Song
Blastocystis is one common protist inhabiting in gastrointestinal tracts of animals and humans. Examining the subtypes has important implications for assessing the zoonotic potential of Blastocystis and intestinal health of hosts. In the present study, a total of 497 fecal samples collected from 37 wild animal species in Qinling Mountains were investigated for the presence and subtypes of Blastocystis. Of them, 200 (40.2%) were positive for Blastocystis and 13 subtypes were found, including eight known subtypes (STs1-3, 5, 10, 12-14) and five possible novel subtypes (temporarily named as STs18-22), with ST10 as the predominate subtype and the subtype ST5 was detected in an ostrich for the first time...
May 24, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28536880/seasonal-variation-of-strongylosis-in-working-donkeys-of-ethiopia-a-cross-sectional-and-longitudinal-studies
#4
Motuma Debelo Dibaba, A M Getachew, Zerihun Assefa, Alemayehu Fanta, Manyahilishal Etana, Seyoum Firew, Lemessa Goshu, F Burden
Helminths are one of the major health problems of working donkeys, often with heavy worm burden and contributing to their early demise and/or reduction in their work output. Cross-sectional and longitudinal studies were conducted to investigate the current infection prevalence and level of strongyles infection donkeys would acquire through different seasons in the mid-lowland agro-ecological zones of Ethiopia. For this purpose, faecal samples from 206 (cross-sectional study) and 102 (longitudinal study) randomly selected donkeys were directly collected from the rectum and analysed...
May 24, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28536879/effects-of-dietary-intake-of-garlic-on-intestinal-trematodes
#5
Alba Cortés, Miguel García-Ferrús, Javier Sotillo, J Guillermo Esteban, Rafael Toledo, Carla Muñoz-Antolí
The current strategy for the control of helminth infections relies on chemotherapy. However, resistance appearance is promoting the necessity of developing new drugs against trematodes. Herein, potential trematocidal effects of garlic (Allium sativum) are investigated in the context of intestinal foodborne trematodes, employing the Echinostoma caproni-mouse model. Daily administration of dietary doses of garlic was conducted in three groups of mice: (i) before infection (prophylaxis), (ii) after infection (therapeutic) and (iii) both, before and after infection (continuous)...
May 23, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28536878/erratum-to-long-lasting-permethrin-impregnated-clothing-protective-efficacy-against-malaria-in-hyperendemic-foci-and-laundering-wearing-and-weathering-effects-on-residual-bioactivity-after-worst-case-use-in-the-rain-forests-of-french-guiana
#6
Bruno Most, Vincent Pommier de Santi, Frédéric Pagès, Marie Mura, Waltraud M Uedelhoven, Michael K Faulde
No abstract text is available yet for this article.
May 23, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28534106/detection-and-prevalence-of-haemoproteus-archilochus-haemosporida-haemoproteidae-in-two-species-of-california-hummingbirds
#7
A C Bradshaw, L A Tell, H B Ernest, S Bahan, J Carlson, R N M Sehgal
Haemosporidian blood parasites are transmitted to a wide range of avian hosts via blood-sucking dipteran vectors. Microscopy has revealed an impressive diversity of avian haemosporidia with more than 250 species described. Moreover, PCR and subsequent sequence analyses have suggested a much greater diversity of haemosporidia than morphological analyses alone. Given the importance of these parasites, very few studies have focused on the charismatic hummingbirds. To date, three Haemoproteus species (Haemoproteus archilochus, Haemoproteus trochili, and Haemoproteus witti) and one Leucocytozoon species (Leucocytozoon quynzae) have been described in blood samples taken from hummingbirds (Trochilidae)...
May 22, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28534105/bacterial-diversity-of-cosmopolitan-culex-pipiens-and-invasive-aedes-japonicus-from-germany
#8
Sina Zotzmann, Antje Steinbrink, Kathrin Schleich, Felix Frantzmann, Chinhda Xoumpholphakdy, Manuela Spaeth, Claire Valiente Moro, Patrick Mavingui, Sven Klimpel
Symbiotic bacteria have gained significant attention in recent years. For example, microbiota of some mosquito species seems to influence the development and transmission of pathogens. Furthermore, several attempts using bacteria as a paratransgenetic tool have been made in order to assist the control of mosquito-borne diseases. In this study, we examined the bacterial diversity of wild-caught adult Culex (Cx.) pipiens and laboratory-reared adult Aedes japonicus (Ae. japonicus) in Germany using a culture-independent method...
May 22, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28528516/combined-effects-of-chinese-medicine-feed-and-ginger-extract-bath-on-co-infection-of-ichthyophthirius-multifiliis-and-dactylogyrus-ctenopharyngodonid-in-grass-carp
#9
Yao-Wu Fu, Bin Wang, Qi-Zhong Zhang, De-Hai Xu, De-Jie Lin, Xing-Ya Yang, Shu-Qun Zhu, Jing-Yang Pan, Qian Deng, Yan-Meng Liu, Sheng-Yu Zhou
Dactylogyrus ctenopharyngodonid and Ichthyophthirius multifiliis are two important ectoparasites of freshwater fish. Co-infection by the two parasites leads to high fish mortality and results in heavy economic losses. This study aimed to evaluate the efficacy of medicated feed and a ginger extract bath against D. ctenopharyngodonid and I. multifiliis on grass carp and investigate the hematological response of grass carp co-infected by the two parasites. These results demonstrated that red blood cell (RBC) and thrombocyte percentage among leucocytes significantly decreased after grass carp were co-infected by D...
May 20, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28526990/how-does-supplementary-feeding-affect-endoparasite-infection-in-wild-boar
#10
Ragne Oja, Kaisa Velström, Epp Moks, Pikka Jokelainen, Brian Lassen
Supplementary feeding is widely used in game management but may aid the transmission of parasites. Firstly, feeding sites attract animals and may be regarded as high-risk areas for parasite transmission. Secondly, high host population densities resulting from and supported by supplementary feeding, as well as accumulation of parasites in the environment, may increase parasite prevalence. Our aim was to investigate whether host density or the number of feeding sites drives endoparasite infection in an Estonian wild boar (Sus scrofa) population...
May 19, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28526989/first-molecular-detection-and-characterization-of-hepatozoon-and-sarcocystis-spp-in-field-mice-and-voles-from-japan
#11
Mohamed Abdallah Mohamed Moustafa, Michito Shimozuru, Wessam Mohamed, Kyle Rueben Taylor, Ryo Nakao, Mariko Sashika, Toshio Tsubota
Sarcocystis and Hepatozoon species are protozoan parasites that are frequently detected in domestic and wild animals. Rodents are considered common intermediate and paratenic hosts for several Sarcocystis and Hepatozoon species. Here, blood DNA samples from a total of six rodents, including one Myodes rutilus, one Myodes rufocanus, and four Apodemus speciosus, collected from Hokkaido, Japan, were shown by conventional PCR of the 18S ribosomal RNA (rRNA) gene to contain Sarcocystis and Hepatozoon DNA. Sequencing of the DNA detected one Sarcocystis sp...
May 19, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28523490/ivermectin-lipid-based-nanocarriers-as-novel-formulations-against-head-lice
#12
Gabriela Ullio-Gamboa, Santiago Palma, Jean Pierre Benoit, Daniel Allemandi, María Inés Picollo, Ariel Ceferino Toloza
The use of pyrethroids to control the human head louse, Pediculus humanus capitis De Geer (Anoplura: Pediculidae), has suffered considerable loss of efficacy due to the evolution of resistance. Thus, the development of efficiently insecticide delivery systems is imperative for the control of head lice. We studied the insecticidal activity of ivermectin-loaded lipid nanocapsules (IVM-LNC) against permethrin-resistant head lice from Argentina. The LNC, prepared by a phase inversion procedure, were characterized in terms of size, surface potential, and physical stability...
May 18, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28523489/occurrence-of-ornithonyssus-sylviarum-in-pet-birds-from-the-district-of-set%C3%A3%C2%BAbal-portugal
#13
Helga Waap, Diana Paulino, Rita Cardoso
Ornithonyssus sylviarum is a blood-feeding ectoparasite of birds and the most serious pest in poultry farms in North America. Although the mites are typically adapted to temperate climates, information on this mite in Europe is sparse, and Dermanyssus gallinae is considered to be the only mite impacting the poultry industry. The present study reports the occurrence of O. sylviarum in pet birds in Portugal. Mites were collected directly from birds and with traps placed in cages and nests at 20 different sampling places belonging to 6 municipalities in the district of Setúbal...
May 18, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28523488/morphological-and-molecular-evidence-for-a-new-species-of-pseudanisakis-layman-borovkova-1926-nematoda-ascaridida-parasitizing-rajiformes-in-southern-southwest-atlantic-waters
#14
Manuel M Irigoitia, Paola E Braicovich, Marisa D Farber, Juan T Timi
Pseudanisakis argentinensis n. sp. is proposed to accommodate parasitic nematodes found in six skate species (Rajidae and Arhynchobatidae) examined from southern Southwest Atlantic waters. The new species differs from its congeners by the following combination of characters: a cupola on each lip, males with 8-12 pairs of precloacal genital papillae, a larger size for both males and females, a greater length-to-breadth ratio of the ventriculus and the presence of a small knob on the tip of the tail. Allometric growth was observed for several morphometric features; however, the slopes of the allometric relationships across host species exhibited non-significant differences and were considered as a strong evidence for conspecificity...
May 18, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28516228/great-sandeel-hyperoplus-lanceolatus-as-a-putative-transmitter-of-parasite-contracaecum-osculatum-nematoda-anisakidae
#15
K Nadolna-Ałtyn, M Podolska, B Szostakowska
In the Baltic Sea, the great sandeel (Hyperoplus lanceolatus), a common fish species that inhabits sandy substrates, is an important element in the diet of marine mammals, sea birds, and piscivorous fish. It can also act as a transmitter of parasites to its predators, but parasitological studies on this species are limited. We sampled great sandeels in April 2016 in two areas of the southern Baltic Sea (SB-south of Bornholm and GG-the Gulf of Gdansk) and found parasitic anisakid nematodes in both locations...
May 17, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28512673/hepatozoon-caimani-carini-1909-adeleina-hepatozoidae-in-wild-population-of-caiman-yacare-daudin-1801-crocodylia-alligatoridae-pantanal-brazil
#16
Priscilla Soares, Tarcilla Corrente Borghesan, Luiz Eduardo Rolland Tavares, Vanda Lúcia Ferreira, Marta Maria Geraldes Teixeira, Fernando Paiva
Previous studies showed infections of Hepatozoon caimani in wild populations of caimans in wide regions from Brazil; some of those demonstrated that trophic chain are linked to natural infections through paratenic hosts or by the direct ingestion of vectors. These studies life cycle of H. caimani contributed inestimably to the knowledge of transmission routes, yet but lack enhancement tools for better detail of parasite. This study reports the forms in the blood and tissues, and also partial molecular characterization of the H...
May 17, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28508922/adaptation-and-optimization-of-a-fluorescence-based-assay-for-in-vivo-antimalarial-drug-screening
#17
Maria H Arias, Eric Deharo, Alexis Valentin, Giovanny Garavito
The in vivo efficacy of potential antimalarials is usually evaluated by direct microscopic determination of the parasitaemia of Plasmodium-infected mice on Giemsa-stained blood smears. This process is time-consuming, requires experienced technicians and is not automatable. Therefore, we optimized a SYBR Green I (SYBRG I) fluorescence-based assay to fluorometers commonly available in many research laboratories. This technique was originally developed to assess parasitaemia in humans by cytometry. We defined optimal conditions with Plasmodium berghei-infected mice, standard lysis buffer (Tris, EDTA, saponin and Triton), whole blood cells and 2 h staining incubation with SYBRG I 2X...
May 16, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28508167/lessons-from-a-15-year-old-boy-with-advanced-schistosomiasis-japonica-in-china-a-case-report
#18
REVIEW
Langui Song, Xiaoying Wu, An Ning, Zhongdao Wu
Schistosomiasis is a chronic, parasitic disease caused by flukes (trematodes) of the genus Schistosoma, which presents the most important global burden of the 17 neglected tropical diseases listed by the World Health Organization. China has made great achievements in schistosomiasis control, and now China is planning to move forward, to eliminate schistosomiasis within 2020, but the fact cannot be denied that the possibility of schistosome infection is still there in some endemic due to its zoonotic nature as well as wide distribution of its intermediate hosts (snails)...
May 16, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28508166/toxoplasma-gondii-and-schizophrenia-a-review-of-published-rcts
#19
REVIEW
Sam D Chorlton
Over the last 60 years, accumulating evidence has suggested that acute, chronic, and maternal Toxoplasma gondii infections predispose to schizophrenia. More recent evidence suggests that chronically infected patients with schizophrenia present with more severe disease. After acute infection, parasites form walled cysts in the brain, leading to lifelong chronic infection and drug resistance to commonly used antiparasitics. Chronic infection is the most studied and closely linked with development and severity of schizophrenia...
May 15, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28508165/frequency-of-toxoplasma-gondii-in-the-retina-in-eye-banks-in-brazil
#20
Deise F Costa, Heloisa Nascimento, Aline Sutili, Fernando A J Nobrega, Flavio Fowler, Mario Junqueira Nobrega, Cristina Garrido, Janaina de Oliveira Dias, Consuelo B D Adán, Luiz Vicente Rizzo, Claudio Silveira, Rubens Belfort, Alessandra G Commodaro
Ocular toxoplasmosis is the main cause of posterior uveitis worldwide frequently leading to vision loss. In Brazil, the seroprevalence of Toxoplasma gondii infection ranges from 50 to 80% depending of the region studied. The frequency of toxoplasmic retinal scar may reach 18% of the adults in the South of Brazil. Our goal was to determine the frequency of T. gondii DNA in retinas from eye banks from different regions in Brazil. A total of 162 eyes were obtained from eye banks in Manaus (n = 60), Sao Paulo (n = 60), Chapeco (n = 26), and Joinville (n = 16)...
May 15, 2017: Parasitology Research
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