7,583 results match your criteria Parasitology[Journal]


Parasite prevalence increases with temperature in an avian metapopulation in northern Norway.

Parasitology 2019 Apr 12:1-6. Epub 2019 Apr 12.

Department of Biology,Norwegian University of Science and Technology, Centre for Biodiversity Dynamics,NO-7491 Trondheim,Norway.

Climate and weather conditions may have substantial effects on the ecology of both parasites and hosts in natural populations. The strength and shape of the effects of weather on parasites and hosts are likely to change as global warming affects local climate. These changes may in turn alter fundamental elements of parasite-host dynamics. Read More

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http://dx.doi.org/10.1017/S0031182019000337DOI Listing
April 2019
2 Reads

Questionnaire survey on helminth control practices in horse farms in Ireland.

Parasitology 2019 Apr 12:1-10. Epub 2019 Apr 12.

School of Veterinary Medicine, University College Dublin,Dublin,Ireland.

Knowledge regarding helminth control strategies and nematode infection of horses in Ireland is limited and only one study has been published recently. This present study was designed to investigate the current helminth control strategies followed by horse owners in Ireland. A questionnaire was formulated to collect data on general grazing, pasture management and deworming strategies including the use of fecal egg counts. Read More

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http://dx.doi.org/10.1017/S0031182019000271DOI Listing

Improved method for genotyping the causative agent of crayfish plague (Aphanomyces astaci) based on mitochondrial DNA.

Parasitology 2019 Apr 12:1-8. Epub 2019 Apr 12.

Biosciences, University of Exeter,Stocker Road, EX4 4QD, Exeter,UK.

Aphanomyces astaci causes crayfish plague, which is a devastating disease of European freshwater crayfish. The likely first introduction of A. astaci into Europe was in the mid-19th century in Italy, presumably with the introduction of North American crayfish. Read More

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http://dx.doi.org/10.1017/S0031182019000283DOI Listing
April 2019
1 Read

Detection of Neospora caninum DNA in cases of bovine and ovine abortion in the South-West of Scotland.

Parasitology 2019 Apr 12:1-4. Epub 2019 Apr 12.

Moredun Research Institute, Pentlands Science Park,Bush Loan, Penicuik, EH26 0PZ,Scotland,UK.

Neospora caninum is a commonly diagnosed cause of reproductive losses in farmed ruminants worldwide. This study examined 495 and 308 samples (brain, heart and placenta) which were collected from 455 and 119 aborted cattle and sheep fetuses, respectively. DNA was extracted and a nested Neospora ITS1 PCR was performed on all samples. Read More

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http://dx.doi.org/10.1017/S0031182019000301DOI Listing
April 2019
4 Reads

Activity of Thymus capitatus essential oil components against in vitro cultured Echinococcus multilocularis metacestodes and germinal layer cells.

Parasitology 2019 Apr 12:1-12. Epub 2019 Apr 12.

Institute of Parasitology, Vetsuisse Faculty, University of Berne,CH-3012 Berne,Switzerland.

The essential oil (EO) of Thymus capitatus, seven fractions (F1-F7) obtained from silica gel chromatography, and several pure EO components were evaluated with respect to in vitro activities against Echinococcus multilocularis metacestodes and germinal layer (GL) cells. Attempts to evaluate physical damage in metacestodes by phosphoglucose isomerase (PGI) assay failed because EO and F1-F7 interfered with the PGI-activity measurements. A metacestode viability assay based on Alamar Blue, as well as transmission electron microscopy, demonstrated that exposure to EO, F2 and F4 impaired metacestode viability. Read More

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http://dx.doi.org/10.1017/S0031182019000295DOI Listing

The impact of botfly parasitism on the health of the gracile mouse opossum (Gracilinanus agilis).

Parasitology 2019 Mar 27:1-9. Epub 2019 Mar 27.

Departamento de Ecologia,Laboratório de Ecologia de Vertebrados, Instituto de Ciências Biológicas, Universidade de Brasília,Brasília, Distrito Federal 70919-900,Brazil.

Fragmented habitats generally harbour small populations that are potentially more prone to local extinctions caused by biotic factors such as parasites. We evaluated the effects of botflies (Cuterebra apicalis) on naturally fragmented populations of the gracile mouse opossum (Gracilinanus agilis). We examined how sex, food supplementation experiment, season and daily climatic variables affected body condition and haemoglobin concentration in animals that were parasitized or not by botflies. Read More

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http://dx.doi.org/10.1017/S003118201900026XDOI Listing

Parasitic nematodes simultaneously suppress and benefit from coccidian coinfection in their natural mouse host.

Parasitology 2019 Mar 27:1-11. Epub 2019 Mar 27.

Institute of Evolutionary Biology and Centre for Immunity, Infection and Evolution,School of Biological Sciences, University of Edinburgh,Edinburgh UK, EH9 3FL,UK.

Within-host interactions among coinfecting parasites are common and have important consequences for host health and disease dynamics. However, these within-host interactions have traditionally been studied in laboratory mouse models, which often exclude important variation and use unnatural host-parasite combinations. Conversely, the few wild studies of within-host interactions often lack knowledge of parasite exposure and infection history. Read More

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http://dx.doi.org/10.1017/S0031182019000192DOI Listing
March 2019
4 Reads

Infection by Trypanosoma cruzi in the central nervous system in non-human mammals: a systematic review.

Parasitology 2019 Mar 15:1-23. Epub 2019 Mar 15.

Department of Animal Biology,Federal University of Viçosa,Viçosa,Minas Gerais,Brazil.

Currently, the types and distribution of the lesions induced in the central nervous system (CNS) by Trypanosoma cruzi remain unclear as the available evidence is based on fragmented data. Therefore, we developed a systematic review to analyse the main characteristics of the CNS lesions in non-human hosts infected. From a structured search on the PubMed/Medline and Scopus platforms, 32 studies were retrieved, subjected to data extraction and methodological bias analysis. Read More

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http://dx.doi.org/10.1017/S0031182019000210DOI Listing
March 2019
1 Read

A paradise for parasites? Seven new haemogregarine species infecting lizards from the Canary Islands.

Parasitology 2019 Mar 15:1-12. Epub 2019 Mar 15.

CIBIO, InBIO - Research Network in Biodiversity and Evolutionary Biology,Universidade do Porto,Campus de Vairão,Rua Padre Armando Quintas,4485-661 Vairão,Portugal.

Oceanic islands are hotspots of biodiversity due to their high levels of endemism, with the Canary Islands being a notable example. A previous molecular study on the biogeography and host associations of haemogregarines (Apicomplexa: Adeleorina) infecting lizards from this archipelago detected seven parasite haplogroups. These haplogroups exhibited high host-specificity and geographical structure, suggesting that they might correspond to distinct biological identities. Read More

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http://dx.doi.org/10.1017/S0031182018002160DOI Listing

A new genus and species of the trematode family Gyliauchenidae Fukui, 1929 from an unexpected, but plausible, host, Kyphosus cornelii (Perciformes: Kyphosidae).

Parasitology 2019 Mar 13:1-10. Epub 2019 Mar 13.

The University of Queensland, School of Biological Sciences,Brisbane, QLD 4072,Australia.

The Enenteridae Yamaguti, 1958 and Gyliauchenidae Fukui, 1929 exhibit an interesting pattern of host partitioning in herbivorous fishes of the Indo-West Pacific. Enenterids are known almost exclusively from fishes of the family Kyphosidae, a group of herbivorous marine fishes common on tropical and temperate reefs. In contrast, gyliauchenids are found in most of the remaining lineages of marine herbivorous fishes, but until the present study, had never been known from kyphosids. Read More

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http://dx.doi.org/10.1017/S0031182019000118DOI Listing

Development of EST-derived microsatellite markers to investigate the population structure of sparganum - the causative agent of zoonotic sparganosis.

Parasitology 2019 Mar 12:1-9. Epub 2019 Mar 12.

Department of Parasitology,School of Basic Medical Sciences, Zhengzhou University,Zhengzhou 450052,People's Republic of China.

The plerocercoid (sparganum) of Spirometra erinaceieuropaei is the main aetiological agent of human sparganosis. To improve the current knowledge on S. erinaceieuropaei evolution, we performed multi-locus microsatellite typing of sparganum isolates from China for the first time. Read More

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http://dx.doi.org/10.1017/S0031182019000222DOI Listing
March 2019
1 Read

Glucose-restriction increases Trichomonas vaginalis cellular damage towards HeLa cells and proteolytic activity of cysteine proteinases (CPs), such as TvCP2.

Parasitology 2019 Mar 12:1-11. Epub 2019 Mar 12.

Departamento de Infectómica y Patogénesis Molecular,Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN),Av. IPN # 2508, Col. San Pedro Zacatenco, Delg. Gustavo A. Madero, CP 07360, Mexico City,Mexico.

Trichomonas vaginalis induces cellular damage to the host cells (cytotoxicity) through the proteolytic activity of multiple proteinases of the cysteine type (CPs). Some CPs are modulated by environmental factors such as iron, zinc, polyamines, etc. Thus, the goal of this study was to assess the effect of glucose on T. Read More

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http://dx.doi.org/10.1017/S0031182019000209DOI Listing

Malacosporean myxozoans exploit a diversity of fish hosts.

Parasitology 2019 Mar 12:1-11. Epub 2019 Mar 12.

Department of Life Sciences,Natural History Museum,Cromwell Road, London SW7 5BD,UK.

Myxozoans are widespread and common endoparasites of fish with complex life cycles, infecting vertebrate and invertebrate hosts. There are two classes: Myxosporea and Malacosporea. To date about 2500 myxosporean species have been described. Read More

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http://dx.doi.org/10.1017/S0031182019000246DOI Listing

Addressing the constraints of Tritrichomonas foetus sample collection in remote areas: lyophilized modified Diamond's media as a substitute for liquid medium.

Parasitology 2019 Mar 12:1-4. Epub 2019 Mar 12.

Sydney School of Veterinary Science, Faculty of Science, University of Sydney,New South Wales, 2006,Australia.

Bovine trichomoniasis is a notifiable, reproductive disease of cattle caused by the parasite Tritrichomonas foetus. Culturing with modified Diamond's medium (MDM) is required to increase the low number of organisms received from a preputial sample, but is limited in application to remote areas as it requires continuous cold chain storage. This study utilized lyophilization to sustain the viability of MDM during transport in lieu of a continuous cold chain. Read More

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http://dx.doi.org/10.1017/S0031182019000258DOI Listing

Negative effects of parasitic lung nematodes on the fitness of a Neotropical toad (Rhinella horribilis).

Parasitology 2019 Mar 12:1-9. Epub 2019 Mar 12.

Smithsonian Tropical Research Institute,Apartado 0843-03092, Ancon, Panama,Republic of Panama.

Pathogens are increasingly implicated in amphibian declines but less is known about parasites and the role they play. We focused on a genus of nematodes (Rhabdias) that is widespread in amphibians and examined their genetic diversity, abundance (prevalence and intensity), and impact in a common toad (Rhinella horribilis) in Panama. Our molecular data show that toads were infected by at least four lineages of Rhabdias, most likely Rhabdias pseudosphaerocephala, and multiple lineages were present in the same geographic locality, the same host and even the same lung. Read More

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http://dx.doi.org/10.1017/S0031182019000106DOI Listing

Repurposing strategies for Chagas disease therapy: the effect of imatinib and derivatives against Trypanosoma cruzi.

Parasitology 2019 Mar 12:1-7. Epub 2019 Mar 12.

Laboratório de Biologia Celular do Instituto Oswaldo Cruz, Fundação Oswaldo Cruz,Av. Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, Rio de Janeiro,Brazil.

Chagas disease (CD) is a neglected parasitic condition endemic in the Americas caused by Trypanosoma cruzi. Patients present an acute phase that may or not be symptomatic, followed by lifelong chronic stage, mostly indeterminate, or with cardiac and/or digestive progressive lesions. Benznidazole (BZ) and nifurtimox are the only drugs approved for treatment but not effective in the late chronic phase and many strains of the parasite are naturally resistant. Read More

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http://dx.doi.org/10.1017/S0031182019000234DOI Listing

Endogenous development of Cystoisospora belli in intestinal and biliary epithelium of humans.

Parasitology 2019 Mar 12:1-8. Epub 2019 Mar 12.

Department of Pathology,Yale University School of Medicine,New Haven, CT 06520-8023,USA.

Cystoisospora (Isospora) belli is a coccidian parasite of humans. It can cause serious digestive disorders involving infection of intestines, biliary tract and gallbladder, especially in those with depressed immunity. It has a direct fecal-oral transmission cycle. Read More

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http://dx.doi.org/10.1017/S003118201900012XDOI Listing
March 2019
2 Reads

Longitudinal study of Amphibiocystidium sp. infection in a natural population of the Italian stream frog (Rana italica).

Parasitology 2019 Feb 28:1-8. Epub 2019 Feb 28.

Department of Chemistry, Biology and Biotechnology,University of Perugia,Via Elce di Sotto 8, Perugia,Italy.

Mesomycetozoean-induced infections (order Dermocystida, genus Amphibiocystidium) in European and North American amphibians are causing alarm. To date, the pathogenicity of these parasites in field conditions has been poorly studied, and demographic consequences on amphibian populations have not been explored. In this study, an Amphibiocystidium sp. Read More

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http://dx.doi.org/10.1017/S0031182019000076DOI Listing
February 2019
2 Reads

First isolation of Leishmania infantum by blood culture in bovines from endemic area for canine visceral leishmaniasis.

Parasitology 2019 Feb 20:1-3. Epub 2019 Feb 20.

Department of Tropical Diseases,Botucatu Medical School, São Paulo State University - UNESP,Botucatu, São Paulo 18618-970,Brazil.

Leishmaniasis is considered a parasitic disease that still causes serious consequences for mankind, because it presents a high mortality rate worldwide. Considered multi-hosts, the parasites of the genus Leishmania are able of infecting a wide variety of animal species. The dog was considered the main source of infection of visceral leishmaniasis (VL), in the urban area. Read More

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http://dx.doi.org/10.1017/S0031182019000088DOI Listing
February 2019
2 Reads

Could angiotensin-modulating drugs be relevant for the treatment of Trypanosoma cruzi infection? A systematic review of preclinical and clinical evidence.

Parasitology 2019 Feb 20:1-14. Epub 2019 Feb 20.

Department of Structural Biology,Institute of Biomedical Sciences, Federal University of Alfenas,Alfenas, 37130-001, Minas Gerais,Brazil.

Although leucocytes are targets of renin-angiotensin system (RAS) effector molecules and RAS-modulating drugs exert immunomodulatory effects, their impact on Trypanosoma cruzi infection remains poorly understood. By using the framework of a systematic review, we integrated the preclinical and clinical evidence to investigate the relevance of angiotensin-inhibiting drugs on T. cruzi infections. Read More

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http://dx.doi.org/10.1017/S003118201900009XDOI Listing
February 2019
8 Reads

The relationship between parasite virulence and environmental persistence: a meta-analysis.

Parasitology 2019 Feb 19:1-6. Epub 2019 Feb 19.

Department of Zoology,University of Oxford,Mansfield Road, Oxford, OX1 3SZ,UK.

Why some parasites evolve and maintain extreme levels of virulence is a question that remains largely unanswered. A body of theory predicts that parasites that form long-lived spores able to persist in the environment evolve higher virulence, known as the sit and wait hypothesis. Such parasites can obliterate their local host population and wait in the environment for further hosts to arrive, reducing some of the costs of high virulence. Read More

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http://dx.doi.org/10.1017/S0031182019000015DOI Listing
February 2019
2 Reads

Protein O- and C-Glycosylation pathways in Toxoplasma gondii and Plasmodium falciparum.

Parasitology 2019 Feb 18:1-12. Epub 2019 Feb 18.

Department of Clinical Biochemistry OE4340,Hannover Medical School,Carl-Neuberg-Strasse 1, 30625 Hannover,Germany.

Apicomplexan parasites are amongst the most prevalent and morbidity-causing pathogens worldwide. They are responsible for severe diseases in humans and livestock and are thus of great public health and economic importance. Until the sequencing of apicomplexan genomes at the beginning of this century, the occurrence of N- and O-glycoproteins in these parasites was much debated. Read More

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http://dx.doi.org/10.1017/S0031182019000040DOI Listing
February 2019
4 Reads

Antiprotozoal investigation of 20 plant metabolites on Trypanosoma cruzi and Leishmania amazonensis amastigotes. Atalantoflavone alters the mitochondrial membrane potential.

Parasitology 2019 Feb 13:1-8. Epub 2019 Feb 13.

Department of Pharmaceutical Sciences,Universidade Federal de Santa Catarina,88040-900, Florianópolis, SC,Brazil.

The study aims to evaluate the antiprotozoal activities of 20 plant metabolites on Trypanosoma cruzi and Leishmania amazonensis amastigotes. Compounds 1-20 were obtained and identified by using chromatographic and spectroscopic techniques. The antiparasitic assays were performed on the intracellular form of T. Read More

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http://dx.doi.org/10.1017/S0031182019000052DOI Listing
February 2019
5 Reads

Re-Emerging foci of visceral leishmaniasis in Armenia - first molecular diagnosis of clinical samples.

Parasitology 2019 Feb 13:1-8. Epub 2019 Feb 13.

Division Molecular Biotechnology and Functional Genomics,Technical University of Applied Sciences Wildau,Hochschulring 1, 15745 Wildau,Germany.

Visceral leishmaniasis (VL) was firstly reported in Armenia in 1913. Following a considerable increase of the number of cases until the mid 1950s, the disease disappeared after 1969 and re-emerged in 1999. Scientific literature about VL in Armenia is available only in Russian or Armenian. Read More

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http://dx.doi.org/10.1017/S0031182019000064DOI Listing
February 2019
2 Reads

Pinning down the role of common luminal intestinal parasitic protists in human health and disease - status and challenges.

Parasitology 2019 Feb 8:1-7. Epub 2019 Feb 8.

Laboratory of Parasitology, Department of Bacteria,Parasites and Fungi, Statens Serum Institut,Artillerivej 5, DK-2300 Copenhagen S,Denmark.

While some single-celled intestinal parasites are direct causes of diarrhoea and other types of intestinal pathology, the impact of other gut micro-eukaryotes on human health remains elusive. The fact that some common luminal intestinal parasitic protists (CLIPPs) have lately been found more often in healthy than in diseased individuals has fuelled the hypothesis that some parasites might in fact be protective against disease. To this end, the use of new DNA technologies has helped us investigate trans-kingdom relationships in the gut. Read More

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http://dx.doi.org/10.1017/S0031182019000039DOI Listing
February 2019
4 Reads

Parasite diversity associated with African penguins (Spheniscus demersus) and the effect of host and environmental factors.

Parasitology 2019 Feb 6:1-14. Epub 2019 Feb 6.

Department of Conservation Ecology and Entomology,Stellenbosch University,7602 Stellenbosch,South Africa.

The African penguin (Spheniscus demersus) is a critically endangered species endemic to southern Africa. Limited information is available on the parasite diversity associated with the species in natural settings. This study explores the diversity and incidence of parasites associated with African penguins and their nests, and records the effect of host and environmental factors on parasite infestation. Read More

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http://dx.doi.org/10.1017/S0031182018002159DOI Listing
February 2019
2 Reads

Re-evaluation of merogony of a Cystoisospora ohioensis-like coccidian and its distinction from gametogony in the intestine of a naturally infected dog.

Authors:
J P Dubey

Parasitology 2019 Feb 6:1-6. Epub 2019 Feb 6.

United States Department of Agriculture,Agricultural Research Service,Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory,Beltsville, Maryland, 20705-2350,USA.

Four species of Cystoisospora, C. canis, C. ohioensis, C. Read More

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http://dx.doi.org/10.1017/S0031182018002202DOI Listing
February 2019
2 Reads

Morphological characterization and molecular phylogeny of zoonotic trematodes in the freshwater snail Asolene platae.

Parasitology 2019 Feb 6:1-10. Epub 2019 Feb 6.

Universidad Nacional de Cuyo, Facultad de Ciencias Médicas, Instituto de Fisiología,5500 Mendoza,Argentina.

In the context of a broader program dealing with the symbiotic associations of apple snails, we sampled three species that coexist in Lake Regatas (Palermo, Buenos Aires, Argentina). The population of Asolene platae, (but not those of Pomacea canaliculata and Pomacea scalaris) showed trematode larvae (echinocercariae and xiphidiocercariae) in haemocoelic spaces and connective tissue of the digestive gland. The echinocercariae resembled those of the genus Echinochasmus, but lacked sensory hairs on their body and tail; whereas xiphidiocercariae were similar to the xiphidiocercariae armatae belonging to the Opisthoglyphe type. Read More

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http://dx.doi.org/10.1017/S0031182019000027DOI Listing
February 2019
5 Reads
2.560 Impact Factor

Estimating effective population size for a cestode parasite infecting three-spined sticklebacks.

Parasitology 2019 Feb 5:1-14. Epub 2019 Feb 5.

Department of Ecology and Evolutionary Biology,Tulane University,6823 St. Charles Avenue, Lindy Boggs Building, Room 400, New Orleans, LA 70118,USA.

Remarkably few attempts have been made to estimate contemporary effective population size (Ne) for parasitic species, despite the valuable perspectives it can offer on the tempo and pace of parasite evolution as well as coevolutionary dynamics of host-parasite interactions. In this study, we utilized multi-locus microsatellite data to derive single-sample and temporal estimates of contemporary Ne for a cestode parasite (Schistocephalus solidus) as well as three-spined stickleback hosts (Gasterosteus aculeatus) in lakes across Alaska. Consistent with prior studies, both approaches recovered small and highly variable estimates of parasite and host Ne. Read More

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http://dx.doi.org/10.1017/S0031182018002226DOI Listing
February 2019
11 Reads

Development and evaluation of molecular tools for detecting and differentiating intestinal amoebae in healthy individuals.

Parasitology 2019 Jan 14:1-7. Epub 2019 Jan 14.

Laboratoire de recherche 'Parasitologie Médicale, Biotechnologies et Biomolécules', LR 16-IPT-06,Université Tunis El-Manar, Institut Pasteur de Tunis, 13 place Pasteur,B.P. 74 1002 Tunis Belvédère,Tunisia.

Amoebae are single-celled parasites frequently colonizing human gut. However, few molecular tools are available for accurate identification. Here, we evaluated a panel of polymerase chain reactions (PCRs) targeting Entamoeba histolytica, Entamoeba dispar, Entamoeba coli, Entamoeba hartmanni, Entamoeba polecki, Endolimax nana and Iodamoeba bütschlii. Read More

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http://dx.doi.org/10.1017/S0031182018002196DOI Listing
January 2019
3 Reads

Malaria infection status of European Robins seems to associate with timing of autumn migration but not with actual condition.

Parasitology 2019 Jan 14:1-7. Epub 2019 Jan 14.

Behavioural Ecology Group,Department of Systematic Zoology and Ecology,Eötvös Loránd University, H-1117 Budapest,Hungary.

Avian malaria parasites can negatively affect many aspects of the life of the passerines. Though these parasites may strongly affect the health and thus migration patterns of the birds also during autumn, previous studies on avian malaria focused mainly on the spring migration and the breeding periods of the birds. We investigated whether the prevalence of blood parasites varies in relation to biometrical traits, body condition and arrival time in the European Robin (Erithacus rubecula) during autumn migration. Read More

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http://dx.doi.org/10.1017/S0031182018002184DOI Listing
January 2019
2 Reads

Survival and energy use of Ixodes scapularis nymphs throughout their overwintering period.

Parasitology 2019 Jan 14:1-10. Epub 2019 Jan 14.

Department of Natural Resources,Cornell University,310 Fernow Hall, Ithaca NY 14853,USA.

The blacklegged tick (Ixodes scapularis) spends up to 10 months in the soil between feeding as larvae and questing for hosts as nymphs the following year. We tracked the survival and energy use of 4320 engorged larvae evenly divided across 288 microcosms under field conditions from September to July on sites with high (>12 nymphs/150 m2) and low (<1.2 nymphs/150 m2) densities of naturally questing I. Read More

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http://dx.doi.org/10.1017/S0031182018002147DOI Listing
January 2019
2 Reads

Molecular data show Clinostomoides Dollfus, 1950 is a junior synonym of Clinostomum Leidy, 1856, with redescription of metacercariae of Clinostomum brieni n. comb.

Parasitology 2019 Jan 14:1-9. Epub 2019 Jan 14.

Department of Veterinary Medical Sciences,Alma Mater Studiorum University of Bologna,Via Tolara di Sopra 50, 40064 Ozzano Emilia (BO),Italy.

The genus Clinostomoides Dollfus, 1950 was erected to accommodate a single worm from Ardea goliath sampled in the Belgian Congo. The specimen was distinguished from other clinostomids by its large size and posterior genitalia. In the following years, metacercariae of Clinostomoides brieni, have been described in Clarias spp. Read More

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http://dx.doi.org/10.1017/S0031182018002172DOI Listing
January 2019
3 Reads

In vitro screening of 51 birdsfoot trefoil (Lotus corniculatus L.; Fabaceae) strains for anti-parasitic effects against Haemonchus contortus.

Parasitology 2019 Jan 14:1-9. Epub 2019 Jan 14.

Department of Fisheries, Animal, and Veterinary Sciences,University of Rhode Island,120 Flagg Road, CBLS Rm 177, Kingston, RI 02881,USA.

Secondary plant compounds have shown bioactivity against multi-drug resistant Haemonchus contortus in small ruminants. This study screened 51 strains of birdsfoot trefoil (BFT, Lotus corniculatus) crude aqueous extracts (BFT-AqE) for anti-parasitic activity in vitro against egg hatching, and of those 51 strains, 13 were selected for further testing of motility of first (L1) and third stage (L3) larvae, and exsheathment of L3. Proanthocyanidin content ranged between 1. Read More

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http://dx.doi.org/10.1017/S0031182018002214DOI Listing
January 2019
14 Reads

Trichomonas vaginalis and Mycoplasma hominis: new tales of two old friends.

Parasitology 2019 Jan 8:1-6. Epub 2019 Jan 8.

Department of Biomedical Sciences,University of Sassari,Sassari,Italy.

Trichomonas vaginalis is an anaerobic protist, responsible for the most prevalent non-viral sexually transmitted infection in humans. One of the most intriguing aspects of T. vaginalis pathobiology is the complex relationship with intracellular microbial symbionts: a group of dsRNA viruses belonging to family of Totiviridae (T. Read More

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http://dx.doi.org/10.1017/S0031182018002135DOI Listing
January 2019
3 Reads

Metacyclogenesis of Leishmania (Viannia) guyanensis: a comprehensive study of the main transformation features in axenic culture and purification of metacyclic promastigotes by negative selection with Bauhinia purpurea lectin.

Parasitology 2018 Dec 27:1-12. Epub 2018 Dec 27.

Departamento de Bioquímica e Imunologia,Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais,31.270-901, Belo Horizonte, MG,Brazil.

Leishmania (Viannia) guyanensis is one species that causes cutaneous leishmaniasis in the New World. The incidence of infections with this parasite is probably underestimated and few studies exist on this species, despite its epidemiological importance. In particular, there are no studies concerning L. Read More

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http://dx.doi.org/10.1017/S0031182018002111DOI Listing
December 2018
2 Reads

Avian haemosporidian infections in rufous-collared sparrows in an Andean dry forest: diversity and factors related to prevalence and parasitaemia.

Parasitology 2018 Dec 26:1-9. Epub 2018 Dec 26.

Centro de Investigación de la Biodiversidad y Cambio Climático (BioCamb), Universidad Tecnológica Indoamérica,Machala y Sabanilla, Quito,Ecuador.

Despite intensive research during the last few decades, understanding of ecological and physiological factors related to haemosporidian infections in birds is still fragmentary. Since more model organisms are needed in order to understand these infections in the wild, we analysed avian haemosporidian infections in the rufous-collared sparrow (Zonotrichia capensis, Emberizidae) in a dry forest of the Ecuadorian Andes. Parasite diversity was screened using molecular and morphological approaches. Read More

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http://dx.doi.org/10.1017/S0031182018002081DOI Listing
December 2018
2 Reads

Modelling appropriate use of trypanocides to restrict wide-spread multi-drug resistance during chemotherapy of animal African trypanosomiasis.

Parasitology 2018 Dec 20:1-7. Epub 2018 Dec 20.

Centre for Biotechnology and Bioinformatics, University of Nairobi,P.O. Box 30197, Nairobi,Kenya.

Trypanocide resistance remains a huge challenge in the management of animal African trypanosomiasis. Paucity of data on the prevalence of multi-drug resistant trypanosomes has greatly hindered optimal veterinary management practices. We use mathematical model predictions to highlight appropriate drug regimens that impede trypanocide resistance development in cattle. Read More

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https://www.cambridge.org/core/product/identifier/S003118201
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http://dx.doi.org/10.1017/S0031182018002093DOI Listing
December 2018
7 Reads

Prevalence of a nematode castrator of the carrot weevil and impact on fecundity and survival.

Parasitology 2018 Dec 20:1-6. Epub 2018 Dec 20.

Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture and Agri-Food Canada,430 Gouin Boulevard,Saint-Jean-sur-Richelieu (Québec), J3B 3E6,Canada.

Bradynema listronoti is a parasitic nematode described from infected specimens of the carrot weevil Listronotus oregonensis. Prevalence of infection by B. listronoti under field conditions was followed over a period of 16 years in an untreated carrot field. Read More

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http://dx.doi.org/10.1017/S0031182018002056DOI Listing
December 2018
2 Reads

Cellular immunity in the insect Galleria mellonella against insect non-parasitic nematodes.

Parasitology 2018 Dec 20:1-8. Epub 2018 Dec 20.

Department of Applied Biological Sciences,Faculty of Agriculture,Saga University,Saga,Japan.

Immunity to microbial infections is well understood; however, information regarding the immunity to parasitic multicellular organisms remains lacking. To understand innate host cellular immunity to nematodes, we compared the cellular response of the greater wax moth (Galleria mellonella) larvae against the non-parasitic, bacterial-feeding nematode Caenorhabditis elegans and pathogenic nematode Heterorhabditis bacteriophora. When intact first-instar or dauer larvae of C. Read More

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http://dx.doi.org/10.1017/S003118201800210XDOI Listing
December 2018
2 Reads

Neospora caninum cytoplasmic dynein LC8 light chain 2 (NcDYNLL2) is differentially produced by pathogenically distinct isolates and regulates the host immune response.

Parasitology 2018 Dec 18:1-8. Epub 2018 Dec 18.

Animal Parasitic Diseases Laboratory, Agricultural Research Service, USDA,Beltsville, MD 20705,USA.

Neospora caninum is the causative agent of bovine neosporosis. A N. caninum cytoplasmic dynein LC8 light chain (NcDYNLL) protein was characterized in this study. Read More

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http://dx.doi.org/10.1017/S003118201800207XDOI Listing
December 2018
12 Reads

One-year parasitological screening of stray dogs and cats in County Dublin, Ireland.

Parasitology 2018 Dec 18:1-7. Epub 2018 Dec 18.

UCD Veterinary Sciences Centre, University College Dublin,Belfield, Dublin 4,Ireland.

To date, there are no recent studies identifying the prevalence of parasites of human and veterinary importance in dogs and cats in Ireland. The interaction between pets and wildlife species in the environment is an important source of parasite exposure to canids and felines, and one likely to be heightened in the stray animal population. This study aimed to establish the prevalence of endoparasites in unowned dogs and cats in County Dublin, Ireland. Read More

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https://www.cambridge.org/core/product/identifier/S003118201
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http://dx.doi.org/10.1017/S0031182018002020DOI Listing
December 2018
5 Reads

Long live the worms: methods for maintaining and assessing the viability of intestinal stages of Parascaris spp. in vitro.

Parasitology 2018 Dec 18:1-9. Epub 2018 Dec 18.

Department of Veterinary Science,M.H. Gluck Equine Research Center, University of Kentucky,Lexington, KY,USA.

In vitro maintenance of helminth parasites enables a variety of molecular, pharmaceutical and immunological analyses. Currently, the nutritional and environmental in vitro requirements of the equine ascarid parasite, Parascaris spp., have not been determined. Read More

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http://dx.doi.org/10.1017/S0031182018002019DOI Listing
December 2018
2 Reads

Dog hepatocytes are key effector cells in the liver innate immune response to Leishmania infantum.

Parasitology 2018 Dec 18:1-12. Epub 2018 Dec 18.

Global Health and Tropical Medicine, GHTM,Instituto de Higiene e Medicina Tropical, IHMT,Universidade Nova de Lisboa, UNL,Rua da Junqueira 100, 1349-008 Lisboa,Portugal.

Hepatocytes constitute the majority of hepatic cells, and play a key role in controlling systemic innate immunity, via pattern-recognition receptors (PRRs) and by synthesizing complement and acute phase proteins. Leishmania infantum, a protozoan parasite that causes human and canine leishmaniasis, infects liver by establishing inside the Kupffer cells. The current study proposes the elucidation of the immune response generated by dog hepatocytes when exposed to L. Read More

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http://dx.doi.org/10.1017/S0031182018002068DOI Listing
December 2018
3 Reads

Using human head lice to unravel neglect and cause of death.

Parasitology 2018 Dec 10:1-7. Epub 2018 Dec 10.

Ecology and Evolutionary Biology Section, School of Biological Sciences, University of Reading,Reading, RG6 6AS,UK.

Despite the common association of human lice with abandoned or neglected people, no procedure to assess pediculosis, aimed to detect signs of neglect, exists. Investigating the two most common forms of head louse infestation, regular and severe, we define lice-markers of neglect and develop a protocol and survey form to record and assess pediculosis. The study of head lice from a deceased victim of neglect helped unravel time-length since death, frequency of exposure to neglect and the cause and circumstances related to the death. Read More

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http://dx.doi.org/10.1017/S0031182018002007DOI Listing
December 2018
9 Reads

Host species influence on flea (Siphonaptera) infection parameters of terrestrial micromammals in a temperate forest of Mexico.

Parasitology 2019 Apr 29;146(5):670-677. Epub 2018 Nov 29.

Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala,Km 1.5 Carretera Tlaxcala-Puebla S/N, La Loma Xicohténcatl, C.P. 90070, Tlaxcala, Tlaxcala,México.

Studies of abundance and distribution of organisms are fundamental to ecology. The identity of host species is known to be one of the major factors influencing ectoparasitic flea abundance, but explanations are still needed regarding how host taxa influence abundance parameters of different flea species. This study was carried out at La Malinche National Park (LMNP), Tlaxcala, Mexico, where previously 11 flea species had been recorded on 8 host species. Read More

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http://dx.doi.org/10.1017/S0031182018001981DOI Listing
April 2019
2 Reads

Encephalitozoon cuniculi and Vittaforma corneae (Phylum Microsporidia) inhibit staurosporine-induced apoptosis in human THP-1 macrophages in vitro.

Parasitology 2019 Apr 29;146(5):569-579. Epub 2018 Nov 29.

Division of Microbiology,Tulane National Primate Research Center,Covington, LA 70433,USA.

Obligately intracellular microsporidia regulate their host cell life cycles, including apoptosis, but this has not been evaluated in phagocytic host cells such as macrophages that can facilitate infection but also can be activated to kill microsporidia. We examined two biologically dissimilar human-infecting microsporidia species, Encephalitozoon cuniculi and Vittaforma corneae, for their effects on staurosporine-induced apoptosis in the human macrophage-differentiated cell line, THP1. Apoptosis was measured after exposure of THP-1 cells to live and dead mature organisms via direct fluorometric measurement of Caspase 3, colorimetric and fluorometric TUNEL assays, and mRNA gene expression profiles using Apoptosis RT2 Profiler PCR Array. Read More

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http://dx.doi.org/10.1017/S0031182018001968DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6435431PMC
April 2019
2 Reads

Elucidating in vitro and in vivo phenotypic behaviour of L. infantum/L. major natural hybrids.

Parasitology 2019 Apr 29;146(5):580-587. Epub 2018 Nov 29.

Global Health and Tropical Medicine,GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, UNL,Rua Junqueira 100, 1349-008 Lisbon,Portugal.

The clinical manifestation and course of Leishmania infections depend on factors such as species, virulence and host-immunity. Although trypanosomatids are considered to have clonal propagation, genetic hybridization has produced successful natural hybrid lineages. Hybrids displaying strong selective advantages may have an impact on pathogenesis and the eco-epidemiology of leishmaniasis. Read More

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http://dx.doi.org/10.1017/S0031182018001993DOI Listing
April 2019
17 Reads