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Parasitology Research

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https://www.readbyqxmd.com/read/28342040/ancient-parasites-from-endemic-deer-from-cueva-parque-diana-archeological-site-patagonia-argentina
#1
María Ornela Beltrame, Eleonor Tietze, Alberto Enrique Pérez, Agustín Bellusci, Norma Haydée Sardella
The narrow Andean-Patagonian temperate rainforest strip in the west of southern South America is inhabited by two endemic species of cervids, the southern pudu (Pudu puda) and the huemul (Hippocamelus bisulcus), both cataloged as near threatened and threatened species, respectively. One of the possible causes of their declined number is the susceptibility to livestock diseases. Significant zooarchaeological records of both deer have been found throughout the Holocene from Patagonia. The present contribution reports the first paleoparasitological results obtained from coprolites of endemic deer from the archeological site "Cueva Parque Diana," Neuquén Province, Argentina, and discusses the possible diseases found in ancient times...
March 24, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28337538/prevalence-and-genetic-characterization-of-toxoplasma-gondii-in-free-range-chickens-from-grocery-stores-and-farms-in-maryland-ohio-and-massachusetts-usa
#2
Yuqing Ying, Shiv K Verma, Oliver C H Kwok, Fatima Alibana, Rima Mcleod, Chunlei Su, Jitender P Dubey, Abani K Pradhan
Chickens are considered important in the epidemiology of Toxoplasma gondii. Chicken hearts (n = 1185) obtained from grocery stores were tested for T. gondii infection. Antibodies to T. gondii were assayed in fluid removed from the heart cavity using the modified agglutination test (MAT) at 1:5, 1:25, and 1:100 dilutions. MAT antibodies were detected in 222 hearts at 1:5 dilution and 8 hearts at 1:25 dilution, but none were positive at 1:100 dilution. Seropositive (n = 230, 19.4%) chicken hearts were bioassayed in mice and seronegative (n = 157) chickens were bioassayed in cats...
March 24, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28331963/study-of-loma-acerinae-microsporidia-detected-from-three-ponto-caspian-gobies-gobiidae-in-ukraine
#3
Mykola Ovcharenko, Piotr Wróblewski, Yuriy Kvach, Oleksandra Drobiniak
A previously recognized Glugea-belonging Microsporidia (G. melanostomi, G. markievichi, G. naidenovi) were found in the intestinal mucosa of Neogobius melanostomus, N. fluviatilis, and Proterorhinchus semilunaris (Teleostei, Gobiidae) from lower Dnieper River and Black Sea coastal inlets, Ukraine. Light microscope observations demonstrated small spherical xenomes about 0.35 mm in diameter filled by developmental stages of parasites. Mature spores were ellipsoidal, slightly narrowed at anterior pole, sometimes ovoid or elongate in shape approximately 3...
March 23, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28324166/redescription-of-chloromyxum-ellipticum-li-nie-1973-myxosporea-chloromyxidae-infecting-the-gall-bladder-of-grass-carp-ctenopharyngodon-idellus-valenciennes-1844-supplemented-by-morphological-and-molecular-characteristics
#4
J Y Zhang, Y L Zhao, M D Batueva, D Luo, Z F Xing, Q Q Zhang, X H Liu
The traditional taxonomy of the genus Chloromyxum Mingazzini, 1890 has been intensively challenged to be paraphyletic by recent ribosomal DNA (rDNA)-based phylogenetic analysis. Undersampling to get rich sequence data to infer more scientific phylogenetic relationships makes scientists conservatively assign all non-marine elasmobranch-infecting species as Chloromyxum sensu lato. Although complex ridge pattern on the spore surface observed by scanning electron microscopy was thought to be critical for the identification of Chloromyxum species, insufficient data also prevent this ultrastructural data to be a valid taxonomic feature for this genus...
March 21, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28315013/protective-vaccination-and-blood-stage-malaria-modify-dna-methylation-of-gene-promoters-in-the-liver-of-balb-c-mice
#5
Saleh Al-Quraishy, Mohamed A Dkhil, Abdel-Azeem S Abdel-Baki, Foued Ghanjati, Lars Erichsen, Simeon Santourlidis, Frank Wunderlich, Marcos J Araúzo-Bravo
Epigenetic mechanisms such as DNA methylation are increasingly recognized to be critical for vaccination efficacy and outcome of different infectious diseases, but corresponding information is scarcely available for host defense against malaria. In the experimental blood-stage malaria Plasmodium chabaudi, we investigate the possible effects of a blood-stage vaccine on DNA methylation of gene promoters in the liver, known as effector against blood-stage malaria, using DNA methylation microarrays. Naturally susceptible Balb/c mice acquire, by protective vaccination, the potency to survive P...
March 18, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28303414/identification-of-muscidae-diptera-of-medico-legal-importance-by-means-of-wing-measurements
#6
Andrzej Grzywacz, Jakub Ogiela, Adam Tofilski
Cadavers attract numerous species and genera of Muscidae, both regular elements of carrion insect assemblages, and accidental visitors. Identification of adult Muscidae may be considered difficult, particularly by non-experts. Since species identification is a vital first step in the analysis of entomological material in any forensic entomology orientated experiment and real cases, various alternative methods of species identification have been proposed. We investigated possibility of semiautomated identification by means of wing measurements as an alternative for classic morphology and DNA-based approaches...
March 16, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28293739/a-new-synthesium-species-digenea-brachycladiidae-from-the-bottlenose-dolphin-tursiops-truncatus-cetacea-delphinidae-in-southwestern-atlantic-waters
#7
Mariana B Ebert, Maria I Mülller, Juliana Marigo, Ana L S Valente, Marta J Cremer, Reinaldo J da Silva
A new species of Synthesium from the bottlenose dolphin Tursiops truncatus in South Brazilian waters is described. Morphological and molecular identification was performed, and phylogenetic analyses were carried out using the ribosomal small subunit and internal transcribed spacer 1 and the mitochondrial NDH dehydrogenase subunit 3 and cytochrome c oxidase subunit 1 genes. The main characteristics of the new species are the subterminal round-shaped oral sucker, the anterior distribution of vitellaria reaching the level of the ovary and the oval-shaped testes...
March 14, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28285327/biochemical-properties-and-vaccine-effect-of-recombinant-tpx-3-from-schistosoma-japonicum
#8
Yanhui Han, Bin Zhao, Min Zhang, Yang Hong, Hongxiao Han, Xiaodan Cao, Ke Lu, Jiaojiao Lin, Zhiqiang Fu
Thioredoxin peroxidases (TPxs) play an important role in maintaining redox homeostasis and in protecting organisms from the accumulation of toxic reactive oxygen species (ROS). In this study, we isolated the thioredoxin peroxidase-3 gene of Schistosoma japonicum, SjTPx-3. The open reading frame (ORF) of SjTPx-3 was 663 bp encoding 220 amino acids with a molecular weight of 24.99 kDa and an isoelectric point of 6.20. Quantitative real-time reverse transcription-polymerase chain reaction indicated that SjTPx-3 was expressed in all different stages of the parasites, with highest expression in 35-day-old worms...
March 11, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28283799/encystment-of-parasitic-freshwater-pearl-mussel-margaritifera-margaritifera-larvae-coincides-with-increased-metabolic-rate-and-haematocrit-in-juvenile-brown-trout-salmo-trutta
#9
Karl Filipsson, Jeroen Brijs, Joacim Näslund, Niklas Wengström, Marie Adamsson, Libor Závorka, E Martin Österling, Johan Höjesjö
Gill parasites on fish are likely to negatively influence their host by inhibiting respiration, oxygen transport capacity and overall fitness. The glochidia larvae of the endangered freshwater pearl mussel (FPM, Margaritifera margaritifera (Linnaeus, 1758)) are obligate parasites on the gills of juvenile salmonid fish. We investigated the effects of FPM glochidia encystment on the metabolism and haematology of brown trout (Salmo trutta Linnaeus, 1758). Specifically, we measured whole-animal oxygen uptake rates at rest and following an exhaustive exercise protocol using intermittent flow-through respirometry, as well as haematocrit, in infested and uninfested trout...
March 10, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28283798/serological-dynamics-and-risk-factors-of-besnoitia-besnoiti-infection-in-breeding-bulls-from-an-endemically-infected-purebred-beef-herd
#10
Alessia Libera Gazzonis, Gema Alvarez Garcia, Andrea Maggioni, Sergio Aurelio Zanzani, Emanuela Olivieri, Riccardo Compiani, Giuseppe Sironi, Luis Miguel Ortega Mora, Maria Teresa Manfredi
Bovine besnoitiosis has been deemed a re-emerging disease in Western Europe and considered endemic in Spain, Portugal, France and in some areas of Northern Italy. This report refers to an infection outbreak in a purebred beef herd from Northern Italy involving a large number of bulls. In October 2013, 544 animals were serologically tested with an in-house ELISA followed by a confirmatory Western blot to evaluate Besnoitia besnoiti seroprevalence. A year later, 461 animals were then serologically re-tested together with imported animals (n = 268)...
March 10, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28281100/helminth-parasitism-in-two-closely-related-south-african-rodents-abundance-prevalence-species-richness-and-impinging-factors
#11
Andrea Spickett, Kerstin Junker, Boris R Krasnov, Voitto Haukisalmi, Sonja Matthee
We investigated patterns of helminth infection in two closely related rodents (social Rhabdomys pumilio occurring mainly in xeric habitats and solitary R. dilectus occurring mainly in mesic habitats) at 20 localities in different biomes of South Africa and asked if between-species differences were mainly caused by difference in sociality or difference in environmental conditions of their respective habitats. Helminths recovered from the gastrointestinal tract totalled 11 nematode and 5 cestode species from R...
March 10, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28265752/myosin-b-of-plasmodium-falciparum-pfmyob-in-silico-prediction-of-its-three-dimensional-structure-and-its-possible-interaction-with-mtip
#12
Paula C Hernández, Liliana Morales, Isabel C Castellanos, Moisés Wasserman, Jacqueline Chaparro-Olaya
The mobility and invasion strategy of Plasmodium falciparum is governed by a protein complex known as the glideosome, which contains an actin-myosin motor. It has been shown that myosin A of the parasite (PfMyoA) is the myosin of the glideosome, and the interaction of PfMyoA with myosin tail domain interacting protein (MTIP) determines its correct location and its ability to function in the complex. Because PfMyoA and myosin B of P. falciparum (PfMyoB) share high sequence identity, are both small proteins without a tail domain, belong to the class XIV myosins, and are expressed in late schizonts and merozoites, we suspect that these myosins may have similar or redundant functions...
March 7, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28255918/morphological-and-molecular-characterization-of-four-sarcocystis-spp-including-sarcocystis-linearis-n-sp-from-roe-deer-capreolus-capreolus-in-italy
#13
Bjørn Gjerde, Stefano Giacomelli, Alessandro Bianchi, Irene Bertoletti, Hajime Mondani, Lucia Rita Gibelli
Fresh (frozen/thawed) muscle samples from four 2-12-year-old roe deer (Capreolus capreolus) from the Sondrio province in north-eastern Italy were examined under a dissecting microscope, and about 180 sarcocysts were isolated and identified to morphological type in wet mounts by light microscopy (LM). Seventy-seven of these sarcocysts were subsequently examined by molecular methods, comprising polymerase chain reaction (PCR) amplification and sequencing of the partial cytochrome c oxidase subunit I gene (cox1) of all isolates, as well as PCR amplification, cloning and sequencing of the complete18S ribosomal RNA (rRNA) gene of two isolates of each species found...
March 2, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28251314/molecular-diagnosis-of-acanthamoeba-keratitis-evaluation-in-rat-model-and-application-in-suspected-human-cases
#14
Adriana Oliveira Costa, Cinthia Furst, Lucas Oliveira Rocha, Cecília Cirelli, Carolina Neris Cardoso, Fagner Salmazo Neiva, Cynara Oliveira Possamai, Daniel de Assis Santos, Vanete Thomaz-Soccol
Acanthamoeba keratitis (AK) is a progressive corneal infection that demands rapid and sensitive techniques for diagnosis to avoid risk of visual impairment. We evaluated two DNA extraction techniques and a semi-nested-PCR (snPCR) targeting the 18S rRNA gene to detect Acanthamoeba cysts and trophozoites. The most effective protocol was evaluated in samples of corneal scrapings and biopsies from an AK rat model and applied to diagnosis of human cases of AK. DNA extraction performed with a commercial kit based on DNA binding to magnetic beads was more efficient than a method based on alkaline lysis, allowing the detection of one trophozoite and one cyst of Acanthamoeba in samples prepared from cultures...
March 1, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28238124/preliminary-genetic-evidence-of-two-different-populations-of-opisthorchis-viverrini-in-lao-pdr
#15
Opal Pitaksakulrat, Nadda Kiatsopit, Nonglak Laoprom, Bonnie L Webster, Joanne P Webster, Poppy H L Lamberton, Thewarach Laha, Ross H Andrews, Trevor N Petney, David Blair, Elizabeth J Carlton, Robert C Spear, Paiboon Sithithaworn
Opisthorchis viverrini is a major public health concern in Southeast Asia. Various reports have suggested that this parasite may represent a species complex, with genetic structure in the region perhaps being dictated by geographical factors and different species of intermediate hosts. We used four microsatellite loci to analyze O. viverrini adult worms originating from six species of cyprinid fish in Thailand and Lao PDR. Two distinct O. viverrini populations were observed. In Ban Phai, Thailand, only one subgroup occurred, hosted by two different fish species...
February 25, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28236172/in-silico-screening-identification-and-validation-of-a-novel-vaccine-candidate-in-the-fight-against-plasmodium-falciparum
#16
Sandeep Kumar Panda, Rajani Kanta Mahapatra
With the enormous genetic plasticity of malaria parasite, the challenges of developing a potential malaria vaccine candidate with highest efficacy still remain. This study has incorporated a bioinformatics-based screening approach to explore potential vaccine candidates in Plasmodium falciparum proteome. A systematic strategy was defined to screen proteins from the Malaria Parasite Metabolic Pathways (MPMP) database, on the basis of surface exposure, non-homology with host proteome, orthology with related Plasmodium species, and MHC class I and II binding promiscuity...
February 24, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28233104/evolutionary-anatomy-of-the-muscular-apparatus-involved-in-the-anchoring-of-acanthocephala-to-the-intestinal-wall-of-their-vertebrate-hosts
#17
Holger Herlyn, Horst Taraschewski
Different conceptions exist regarding structure, function, and evolution of the muscles that move the acanthocephalan presoma, including the proboscis, i.e., the usually hooked hold-fast anchoring these endoparasites to the intestinal wall of their vertebrate definitive hosts. In order to clarify the unresolved issues, we carried out a light microscopic analysis of series of semi-thin sections and whole mounts representing the three traditional acanthocephalan classes: Archiacanthocephala (Macracanthorhynchus hirudinaceus), Eoacanthocephala (Paratenuisentis ambiguus, Tenuisentis niloticus), and Palaeacanthocephala (Acanthocephalus anguillae, Echinorhynchus truttae, Pomphorhynchus laevis, Corynosoma sp...
February 24, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28229221/the-raccoon-dog-nyctereutes-procyonoides-and-the-raccoon-procyon-lotor-their-role-and-impact-of-maintaining-and-transmitting-zoonotic-diseases-in-austria-central-europe
#18
Tanja Duscher, Adnan Hodžić, Walter Glawischnig, Georg G Duscher
The neozoan species raccoon dog (Nyctereutes procyonoides) and raccoon (Procyon lotor) are widespread in Europe and potential vectors of many diseases that can threaten human and domestic animal health. Facing a further spread of these species, it is important to know about (i) pathogens imported and/or (ii) pathogens acquired in the new habitat. Thus, we investigated the parasite fauna of wild raccoon dogs and raccoons from Austria, at the edge of their new distribution range. The eight examined raccoons were nearly free of pathogens including Baylisascaris procyonis, and thus assumed to have a low epidemiological impact, so far...
February 23, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28224222/immunopathological-characterization-of-human-cutaneous-leishmaniasis-lesions-caused-by-leishmania-viannia-spp-in-amazonian-brazil
#19
Cláudia Maria Castro Gomes, Maria Gloria Teixeira Sousa, Joyce Prieto Bezerra Menezes, Marliane Campos Batista, Ana Carolina Stocco Lima, Walter Belda, Daniel Bradshaw, Monica Elinor Alves Gama, Márcia Dalastra Laurenti, Fernando Tobias Silveira, Carlos Eduardo Pereira Corbett
American cutaneous leishmaniasis (ACL) is a chronic infectious disease caused by different protozoan species of Leishmania, and it is endemic in both tropical and subtropical countries. Using immunohistochemistry, we investigate the density of CD68(+), lysozyme(+), CD1a(+), factor XIIIa(+), CD4(+), CD8(+), CD56(+), interferon (IFN)-γ(+), and inducible NO synthase (iNOS(+)) cells. These cells were analyzed from 22 biopsy samples obtained from the lesions of ACL patients, whose infection was caused by Leishmania (Viannia) spp...
February 21, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28220242/expression-of-clonorchis-sinensis-giiispla2-protein-in-baculovirus-infected-insect-cells-and-its-overexpression-facilitating-epithelial-mesenchymal-transition-in-huh7-cells-via-akt-pathway
#20
Mei Shang, Zhizhi Xie, Zeli Tang, Lei He, Xiaoyun Wang, Caiqin Wang, Yinjuan Wu, Ye Li, Lu Zhao, Zhiyue Lv, Zhongdao Wu, Yan Huang, Xinbing Yu, Xuerong Li
Although prior studies confirmed that group III secretory phospholipase A2 of Clonorchis sinensis (CsGIIIsPLA2) had stimulating effect on liver fibrosis by binding to LX-2 cells, large-scale expression of recombinant protein and its function in the progression of hepatoma are worth exploring. Because of high productivity and low lipopolysaccharides (LPS) in the Sf9-baculovirus expression system, we firstly used this system to express the coding region of CsGIIIsPLA2. The molecular weight of recombinant CsGIIIsPLA2 protein was about 34 kDa...
February 20, 2017: Parasitology Research
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