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https://www.readbyqxmd.com/read/28640666/first-report-of-an-adult-tapeworm-cestoda-diphyllobothriidea-in-a-southern-sea-otter-enhydra-lutris-nereis
#1
Colleen Young, Melissa A Miller, Roman Kuchta, Jan Brabec, Seth D Newsome, Murray Dailey
We present a novel case of an intestinal cestode infection in a southern sea otter (Enhydra lutris nereis). The cestode species Diplogonoporus tetrapterus was confirmed genetically. Stable isotope analysis of whiskers collected from the sea otter did not confirm the consumption of fish as the route of exposure.
June 22, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28616494/community-based-surveillance-of-zoonotic-parasites-in-a-one-health-world-a-systematic-review
#2
REVIEW
J M Schurer, E Mosites, C Li, S Meschke, P Rabinowitz
The One Health (OH) concept provides an integrated framework for observing and improving health issues involving human, animal, and environmental factors, and has been applied in particular to zoonotic disease problems. We conducted a systematic review of English and Chinese language peer-reviewed and grey literature databases to identify zoonotic endoparasite research utilizing an OH approach in community-based settings. Our review identified 32 articles where specimens collected simultaneously from all three OH domains (people, animals, and the environment) were assessed for endoparasite infection or exposure...
December 2016: One Health
https://www.readbyqxmd.com/read/28615889/helminth-parasites-of-the-eurasian-water-shrew-neomys-fodiens-pennant-1771-in-south-west-belarus
#3
V V Shimalov
The result of helminthological investigation of 25 Eurasian water shrews during 1996-2011 in South-West Belarus is presented. Sixteen species of helminths (8 species of trematodes, 3 species of cestodes and 5 species of nematodes) were discovered in 92.0 % of animals (23 infected individuals). The most common species is the trematode Neoglyphe locellus (Kossack, 1910). The cestode Triodontolepis sumavensis (Prokopič, 1957), nematodes Capillaria konstantini Romashov, 1999 and Longistriata neomi Lubarskaja, 1962 is specified in Belarus for the first time...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28615888/helminth-infections-of-the-brown-rat-rattus-norvegicus-berkenhout-1769-in-the-biocenoses-of-south-west-belarus
#4
V V Shimalov
The result of helminthological examination of 20 brown rats from various biocenoses of South-West Belarus during 1996-2011 is presented. Twelve animals were infected. Six species of helminths were found: 1 trematode species, 3 cestode species and 2 nematode species. The most often, the brown rat infected with mesocercariae of trematode Alaria alata (Goeze, 1782). The helminth fauna of brown rats living in the biocenoses are specified for the first time in Belarus.
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28615852/therapecutic-efficacy-of-the-leaf-extract-of-croton-joufra-roxb-against-experimental-cestodiasis-in-rats
#5
Shyamalima Gogoi, Arun K Yadav
The leaves of Croton joufra have been used as a traditional medicine in Assam (Northeast India) to treat the intestinal helminthic infections. The aim of this study was to establish the in vitro and in vivo anthelmintic efficacy of the leaf extract of this plant on Hymenolepis diminuta, a zoonotic tapeworm. The plant extract was also screened for its chemical constituents. The in vitro anthelmintic efficacy of the plant was evaluated by physical motility test on adult cestodes, following their exposure to 10, 20, 30 mg/ml concentrations of the crude leaf extract, while the in vivo effect was determined based on the eggs per gram (EPG) counts and worm recovery rates, using an experimentally induced model of H...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28605969/control-of-hymenolepis-nana-infection-as-a-measure-to-improve-mouse-colony-welfare
#6
Alenka Dovč, Gordana Gregurić Gračner, Iztok Tomažič, Ksenija Vlahović, Marina Pavlak, Renata Lindtner Knific, Klemen Kralj, Mateja Stvarnik, Aleksandra Vergles Rataj
After cannibalism had appeared in the reproductive units of a white mouse colony, treatment against confirmed Hymenolepis nana, a tapeworm with zoonotic potential, was performed on 67 mice in the reproductive and nursery units. Faecal droppings were evaluated by flotation and sedimentation methods. The sedimentation method revealed a higher number of positive results before, during and after the treatment, but the flotation method yielded some additional positive cases. In the reproductive unit, H. nana eggs were confirmed in 50% of the tested mice by the flotation and in 70% by the sedimentation method...
June 2017: Acta Veterinaria Hungarica
https://www.readbyqxmd.com/read/28594283/a-common-eurasian-fish-tapeworm-caryophyllaeides-fennica-cestoda-in-western-north-america-further-evidence-of-amphi-pacific-vicariance-in-freshwater-fish-parasites
#7
Mikuláš Oros, Anindo Choudhury, Tomáš Scholz
The freshwater fish fauna of the Palaearctic and Nearctic regions shows similarities but also notable differences, resulting in diverse distributions of their parasites. Relatively few parasite species occur in both regions and fewer still have been examined using molecular data. We report a rare example of 'amphi-Pacific' distribution, involving the common Palaearctic parasite, the caryophyllidean cestode Caryophyllaeides fennica (Schneider, 1902), in the chiselmouth Acrocheilus alutaceus Agassiz and Pickering, 1855, an endemic cyprinid in northwestern Nearctic, Oregon, USA...
June 8, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28593390/origin-differentiation-and-functional-ultrastructure-of-egg-envelopes-in-the-cestode-echinococcus-multilocularis-leuckart-1863-cyclophyllidea-taeniidae
#8
Zdzisław Świderski, Jordi Miquel, Samira Azzouz-Maache, Anne-Françoise Pétavy
The origin, differentiation and functional ultrastructure of oncospheral or egg envelopes in Echinococcus multilocularis Leuckart, 1863 were studied by transmission electron microscopy (TEM) and cytochemistry. The purpose of our study is to describe the formation of the four primary embryonic envelopes, namely vitelline capsule, outer envelope, inner envelope and oncospheral membrane, and their transformation into the oncospheral or egg envelopes surrounding the mature hexacanth. This transformation takes place in the preoncospheral phase of embryonic development...
July 2017: Parasitology Research
https://www.readbyqxmd.com/read/28588142/recent-evolution-of-extreme-cestode-growth-suppression-by-a-vertebrate-host
#9
Jesse N Weber, Natalie C Steinel, Kum Chuan Shim, Daniel I Bolnick
Parasites can be a major cause of natural selection on hosts, which consequently evolve a variety of strategies to avoid, eliminate, or tolerate infection. When ecologically similar host populations present disparate infection loads, this natural variation can reveal immunological strategies underlying adaptation to infection and population divergence. For instance, the tapeworm Schistocephalus solidus persistently infects 0-80% of threespine stickleback (Gasterosteus aculeatus) in lakes on Vancouver Island...
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28584847/acute-appendicitis-caused-by-an-echinococcal-brood-capsule-unmasks-an-asymptomatic-hepatic-hydatid-cyst
#10
Krishnendu Mondal, Rupali Mandal
Hydatidosis is an endemic helminthic disease in the cattle-grazing regions of Asia. It is usually caused by the cestode Echinococcus granulosus. Internal organs, particularly the liver and lungs, are predominantly affected, but the appendix is only rarely involved with the formation of characteristic hydatid cyst. We present a unique case of appendiceal hydatidosis in an 18-year-old woman with acute appendicitis. Her preoperative abdominal ultrasound revealed an asymptomatic hydatid cyst in the liver. An echinococcal brood capsule was detected postoperatively within the appendicular lumen under microscope...
2017: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28583212/lineage-specific-expansion-and-loss-of-tyrosinase-genes-across-platyhelminths-and-their-induction-profiles-in-the-carcinogenic-oriental-liver-fluke-clonorchis-sinensis
#11
Seon-Hee Kim, Young-An Bae
Tyrosinase provides an essential activity during egg production in diverse platyhelminths by mediating sclerotization of eggshells. In this study, we investigated the genomic and evolutionary features of tyrosinases in parasitic platyhelminths whose genomic information is available. A pair of paralogous tyrosinases was detected in most trematodes, whereas they were lost in cyclophyllidean cestodes. A pseudophyllidean cestode displaying egg biology similar to that of trematodes possessed an orthologous gene...
June 6, 2017: Parasitology
https://www.readbyqxmd.com/read/28561740/a-new-genus-of-proteocephalid-tapeworm-cestoda-from-the-marbled-swamp-eel-synbranchus-marmoratus-bloch-synbranchiformes-synbranchidae-in-the-river-paran%C3%A3-basin-argentina
#12
Nathalia J Arredondo, Philippe Vieira Alves, Alicia A Gil de Pertierra
Synbranchiella gen. n. is proposed to accommodate Synbranchiella mabelae sp. n. (Proteocephalidae: Monticelliinae) from the intestine of the marbled swamp eel Synbranchus marmoratus Bloch, in the River Colastiné, a tributary of the middle River Paraná in Argentina. The new genus is placed in the Monticelliinae because of the cortical position of the genital organs. It differs from all known monticelliine genera by the following combination of characters: (i) scolex robust, with a conical apex, without metascolex; (ii) biloculate suckers with a conspicuous septum separating unequally-sized loculi and a robust non-adherent area, lacking free posterior margin; (iii) vitelline follicles in two narrow lateral bands, extended throughout the nearly entire proglottid length; (iv) vagina always anterior to the cirrus-sac, with an inconspicuous vaginal sphincter; (v) a genital pore pre-equatorial...
May 5, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28561739/inactivation-of-proteolytic-enzymes-by-eubothrium-rugosum-cestoda-from-the-gut-of-burbot-lota-lota
#13
Galina I Izvekova, TatyanaV Frolova, Evgeny I Izvekov
Parasitic organisms inhabiting the alimentary canal should permanently resist the destructive action of host digestive enzymes. The intestinal parasites were shown to produce specific protease inhibitors protecting them from proteolysis. However, little is known about this adaptive mechanism in cestodes so far, especially for the tapeworms dwelling inside the fish intestines. Here, we explored the ability to inactivate proteolytic enzymes in the fish tapeworm Eubothrium rugosum (Batsch, 1786) (Bothriocephalidea) parasitising the intestine of wild burbot, Lota lota (Linnaeus)...
May 9, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28555881/parasite-microbiota-interactions-potentially-affect-intestinal-communities-in-wild-mammals
#14
Tuomas Aivelo, Anna Norberg
1.Detecting interaction between species is notoriously difficult, and disentangling species associations in host-related gut communities is especially challenging. Nevertheless, due to contemporary methods, including metabarcoding and 16S sequencing, collecting observational data on community composition has become easier and much more common. 2.We studied the previously collected data sets of intestinal bacterial microbiota and parasite compositions within longitudinally followed mouse lemurs by analysing the potential interactions with diversity metrics and novel joint species distribution modelling...
May 27, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28526608/microrna-analysis-of-taenia-crassiceps-cysticerci-under-praziquantel-treatment-and-genome-wide-identification-of-taenia-solium-mirnas
#15
Matías Gastón Pérez, Natalia Macchiaroli, Gabriel Lichtenstein, Gabriela Conti, Sebastián Asurmendi, Diego Humberto Milone, Georgina Stegmayer, Laura Kamenetzky, Marcela Cucher, Mara Cecilia Rosenzvit
MicroRNAs (miRNAs) are small non-coding RNAs that have emerged as important regulators of gene expression and perform critical functions in development and disease. In spite of the increased interest in miRNAs from helminth parasites, no information is available on miRNAs from Taenia solium, the causative agent of cysticercosis, a neglected disease affecting millions of people worldwide. Here we performed a comprehensive analysis of miRNAs from Taenia crassiceps, a laboratory model for T. solium studies, and identified miRNAs in the T...
May 17, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28520724/development-of-a-movement-based-in-vitro-screening-assay-for-the-identification-of-new-anti-cestodal-compounds
#16
Dominic Ritler, Reto Rufener, Heinz Sager, Jacques Bouvier, Andrew Hemphill, Britta Lundström-Stadelmann
Intestinal cestodes are infecting millions of people and livestock worldwide, but treatment is mainly based on one drug: praziquantel. The identification of new anti-cestodal compounds is hampered by the lack of suitable screening assays. It is difficult, or even impossible, to evaluate drugs against adult cestodes in vitro due to the fact that these parasites cannot be cultured in microwell plates, and adult and larval stages in most cases represent different organisms in terms of size, morphology, and metabolic requirements...
May 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28513991/immunoprotective-effect-of-chitosan-particles-on-hymenolepis-nana-infected-mice
#17
Mahmoud Abdel-Latif, Gamal El-Shahawi, Shawky M Aboelhadid, Heba Abdel-Tawab
Hymenolepis nana is the most commonly known intestinal cestode infecting mainly human. The present study aimed to investigate the potential effect of chitosan particles (CSP) to enhance the immune system against H. nana infection. Determination of worm burden, egg output, histopathological changes, oxidative stress markers (lipid peroxidation & reduced glutathione), goblet (GCs) and mucosal mast cells (MMCs) counts in intestinal ileum were performed. In addition, levels of intestinal mRNA expression of interleukin (IL)-4, IL-9, stem cell factor (SCF), type I & II interferons (IFN)-α/ γ, tumor necrosis factor (TNF)-α, mucin 2 (MUC2), and inducible nitric oxide synthase (iNOs) were investigated using real-time PCR...
May 17, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28501634/helminth-infracommunity-of-the-cane-toad-rhinella-marina-anura-bufonidae-within-its-native-distribution-range
#18
Nallely Ruiz-Torres, Luis García-Prieto, Omar Lagunas-Calvo, Juan Violante-González, David Osorio Sarabia
During August 2010, a total of 66 cane toad Rhinella marina were collected in Laguna de Coyuca, Guerrero, Mexico and examined for the presence of helminths. Ninety-two percent were parasitized by 1 or more parasite species. A total of 4624 individuals were found, belonging to 8 helminth taxa (1 digenean, 1 cestode and 6 nematodes). Infracommunities harbored by this host species are highly variable (mean Jaccard similarity index 0.31±0.27); mean percent similarity index 0.26±0.32) and depauperate (mean richness 1...
May 10, 2017: Parasitology International
https://www.readbyqxmd.com/read/28485262/biological-significance-of-phosphoenolpyruvate-carboxykinase-in-a-cestode-parasite-raillietina-echinobothrida-and-effect-of-phytoestrogens-on-the-enzyme-from-the-parasite-and-its-host-gallus-domesticus
#19
Ramnath, Asim Kumar Dutta, Barilin Dkhar, Veena Tandon, Bidyadhar DAS
Phosphoenolpyruvate carboxykinase (PEPCK) is involved in glycolysis in the cestode parasite, Raillietina echinobothrida; whereas, it executes a gluconeogenic role in its host, Gallus domesticus. Because of its differing primary function in the cestode parasite and its host, this enzyme is regarded as a plausible anthelmintic target. Hence, the biological significance of PEPCK in the parasite was analysed using siRNA against PEPCK from R. echinobothrida (RePEPCK). In order to find out the functional differences between RePEPCK and GdPEPCK (PEPCK from its host, G...
May 9, 2017: Parasitology
https://www.readbyqxmd.com/read/28484564/hydatid-cysts-in-the-right-temporalis-muscle-an-exceptional-clinical-scenario
#20
Sanjeev Attry, Raghavendra Nayak, S K Saha, S N Ghosh
Hydatid diseases is a parasitic infestation of human and herbivorous animals caused by a cestode, Echinococcus granulosus, which resides in the intestine of definitive hosts like dogs and some wild carnivores like foxes. Liver and lung are commonly involved organs and involvement of muscles and bones is very unusual. Hydatid cyst of the temporalis muscle is extremely rare, even in the countries where echinococcal infestation is endemic. We report a case of 23-year-old female patient with a cystic swelling in the right temporalis muscle which turned out to be hydatid cysts...
April 2017: Asian Journal of Neurosurgery
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