Spatial and temporal structure of the trematode component community in Valvata macrostoma (Gastropoda, Prosobranchia).

abstract：:Taenia crassiceps is a cestode parasite of wild and domestic animals that rarely affects humans; it has been widely used as an experimental model. The asexual proliferation by budding is a useful attribute of T. crassiceps cysticerci, which allows the various strains to be maintained indefinitely in the peritoneal cav...

journal_title：Parasitology

authors： Willms K,Zurabian R

更新日期：2010-03-01 00:00:00

abstract：:The public health significance of hookworm disease is briefly reviewed. The latest evidence confirms that blood loss caused by the worms' feeding activity in the gut is a contributing factor in the development of poor iron status leading to iron-deficiency anaemia. The World Health Organization has identified adolesce...

journal_title：Parasitology

authors： Crompton DW

更新日期：2000-01-01 00:00:00

abstract：: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 ...

journal_title：Parasitology

authors： Dellagnola FA,Montes MM,Martorelli SR,Vega IA

更新日期：2019-06-01 00:00:00

abstract：:Early in the history of schistosomiasis research, children under 5 years of age were known to be infected. Although this problem was recognized over 100 years ago, insufficient action has been taken to address this issue. Under current policy, such infected children only receive their first antiparasitic treatment (pr...

journal_title：Parasitology

authors： Bustinduy AL,Wright S,Joekes EC,Kabatereine NB,Reinhard-Rupp J,King CH,Stothard JR

更新日期：2017-10-01 00:00:00

abstract：:The major transaminase in Heligmosomoides polygyrus, Panagrellus redivivus and rat liver was the 2-oxoglutarate-glutamate system, with relatively few amino acids acting as donors for the pyruvate-alanine and oxaloacetate-aspartate systems. The relative effectiveness of the different amino acid donors in the three tran...

journal_title：Parasitology

authors： Grantham BD,Barrett J

更新日期：1986-12-01 00:00:00

abstract：:A field trial was conducted to evaluate the potential of the nematode-destroying fungus Duddingtonia flagrans to control free-living stages of horse strongyles. In late Spring 2 groups of horses (yearlings) with mixed infections of strongyles were allowed to contaminate 2 equal-sized pastures. One of the groups (F) re...

journal_title：Parasitology

authors： Larsen M,Nansen P,Grøndahl C,Thamsborg SM,Grønvold J,Wolstrup J,Henriksen SA,Monrad J

更新日期：1996-07-01 00:00:00

abstract：:The isolation of 2 genomic clones has allowed us to further characterize a Schistosoma mansoni serine protease designated SmSP1. The deduced amino acid sequence (248aa) considered as a 'light chain' encoding the active site, presents significant homologies with mouse plasma kallikrein and human factor I light chain. T...

journal_title：Parasitology

authors： Cocude C,Pierrot C,Cêtre C,Fontaine J,Godin C,Capron A,Khalife J

更新日期：1999-04-01 00:00:00

abstract：:We assessed the distribution of Trypanosoma cruzi Discrete Typing Units (DTUs) in domestic and peridomestic Triatoma infestans and Triatoma sordida specimens collected in a well-defined rural area in Pampa del Indio, northeastern Argentina. Microscopically-positive bugs were randomly selected with a multi-level sampli...

journal_title：Parasitology

authors： Maffey L,Cardinal MV,Ordóñez-Krasnowski PC,Lanati LA,Lauricella MA,Schijman AG,Gürtler RE

更新日期：2012-10-01 00:00:00

abstract：:We tested whether the prevalence of ticks can be predicted reliably from a simple epidemiological model that takes into account only mean abundance and its variance. We used data on the abundance and distribution of larvae and nymphs of 2 ixodid ticks parasitic on small mammals (Apodemus agrarius, Apodemus flavicollis...

journal_title：Parasitology

authors： Stanko M,Krasnov BR,Miklisova D,Morand S

更新日期：2007-01-01 00:00:00

abstract：:Adult Onchocerca volvulus worms obtained by enzyme digestion from nodules of infected Mexicans were radio-isotope labelled by the chloramine-T or Bolton-Hunter methods. No antigenic determinants were detected in extracts of worms labelled by the chloramine-T method but 3 antigens were detected in extracts of the Bolto...

journal_title：Parasitology

authors： Philipp M,Gómez-Priego A,Parkhouse RM,Davies MW,Clark NW,Ogilvie BM,Beltrán-Hernández F

更新日期：1984-10-01 00:00:00

abstract：:The free radical nitric oxide (NO) is a neuronal messenger which is synthesized from L-arginine and O2 by nitric oxide synthase (NOS). In the synthesis NO and L-citrulline are produced in a stoichiometric 1:1 relation. The activity of NOS was analysed in homogenates of the rat tapeworm Hymenolepis diminuta by measurin...

journal_title：Parasitology

authors： Terenina NB,Onufriev MV,Gulyaeva NV,Lindholm AM,Gustafsson MK

更新日期：2000-01-01 00:00:00

abstract：:Infection of intermediate hosts with eggs of taeniid parasites results in a larval infestation known as cysticercosis. A number of studies have indicated that cysticercosis is associated with immunosuppression, although little is known about the mechanisms involved. In the present study, mice infected with the larvae ...

journal_title：Parasitology

authors： Villa OF,Kuhn RE

更新日期：1996-06-01 00:00:00

abstract：:Exponential decay in community similarity as a function of distance is a ubiquitous phenomenon in biogeography. Thus, for parasite communities, pairwise similarity decreases with increasing geographical distance between host populations. This biogeographical rule should also apply along other dimensions characterizing...

journal_title：Parasitology

authors： Poulin R

更新日期：2010-04-01 00:00:00

abstract：:Understanding the origin of invasive parasites and ecological transmission barriers on the distribution of mosquito-borne pathogens is enriched by molecular phylogenetic approaches now that large databases are becoming available. Here we assess the biogeographical relationships among haemosporidian blood parasites and...

journal_title：Parasitology

authors： Baillie SM,Brunton DH

更新日期：2011-12-01 00:00:00

abstract：:The present study was performed on antigen-presenting cells (APCs) of Theileria annulata transformed dendritic cells (TaDCs) and monocyte-derived dendritic cells (MoDCs) to compare differences in antigen presentation and stimulation of T lymphocyte proliferation. Antigen presentation for T lymphocyte proliferation was...

journal_title：Parasitology

authors： Rashid M,Liu J,Guan G,Wang J,Li Z,Hassan MA,Rashid MI,Mukhtar MU,Luo J,Yin H

更新日期：2020-01-01 00:00:00

abstract：:The SICA[-] or non-agglutinable phenotype of Plasmodium knowlesi schizont-infected erythrocytes has been defined serologically but not biochemically. Similarly, non-cloned SICA[+] or agglutinable parasites have been shown serologically to express SICA or variant antigen(s) but the number and nature of such antigens ha...

journal_title：Parasitology

authors： Howard RJ,Barnwell JW

更新日期：1985-10-01 00:00:00

abstract：:Risk factors for the transmission of Echinococcus multilocularis to humans operate at a range of spatial scales. Over a large area, such as China, regional scale risk is correlated with variation in climatic conditions because of its effect on the spatial distribution of landscapes that can support E. multilocularis t...

journal_title：Parasitology

authors： Danson FM,Graham AJ,Pleydell DR,Campos-Ponce M,Giraudoux P,Craig PS

更新日期：2003-01-01 00:00:00

abstract：:A dipstick dot ELISA for detection of Taenia-specific coproantigens was developed. The test was based on a sandwich ELISA using antibodies raised against adult Taenia solium. Antibodies were absorbed to nitrocellulose paper previously adhered to acetate plastic to form dipsticks. Once blocked with 5% skimmed milk and ...

journal_title：Parasitology

authors： Allan JC,Mencos F,Garcia-Noval J,Sarti E,Flisser A,Wang Y,Liu D,Craig PS

更新日期：1993-07-01 00:00:00

abstract：:The abundance of Profilicollis botulus was monitored in eider ducks for 3 years. No significant difference in P. botulus abundance was found between eiders taken alive and those collected dead from the shore line, or between adult males and adult females. Adult male eiders had a seasonal pattern of infection. Incubati...

journal_title：Parasitology

authors： Thompson AB

更新日期：1985-12-01 00:00:00

abstract：:Transmission experiments were conducted to compare the transmissibility of genetically different Trypanosoma congolense (Savannah subgroup) strains isolated from cattle in a trypanosomiasis endemic area of eastern Zambia. A total of 17 strains were compared. Three strains were extremely virulent with a short pre-paten...

journal_title：Parasitology

authors： Masumu J,Marcotty T,Ndeledje N,Kubi C,Geerts S,Vercruysse J,Dorny P,van den Bossche P

更新日期：2006-09-01 00:00:00

abstract：:Guinea worm disease, dracunculiasis or dracontiasis, is an ancient disease with records going back over 4500 years, but until the beginning of the 20th century, little was known about its life cycle, particularly how humans became infected. In 1905, Robert Thomas Leiper was sent by the British colonial authorities to ...

journal_title：Parasitology

authors： Tayeh A,Cairncross S,Cox FEG

更新日期：2017-10-01 00:00:00

abstract：:Parasites can have a wide range of pathophysiological effects on the host. This review describes those associated with some parasites of major importance in man and animals. Haemoprotozoan diseases such as trypanosomiasis and malaria are primarily associated with anaemia. Such anaemias have a complex aetiology involvi...

journal_title：Parasitology

authors： Holmes PH

更新日期：1987-01-01 00:00:00

abstract：:Prevention of heartworm disease caused by Dirofilaria immitis in domestic dogs and cats relies on a single drug class, the macrocyclic lactones (MLs). Recently, it has been demonstrated that ML-resistant D. immitis are circulating in the Mississippi Delta region of the USA, but the prevalence and impact of these resis...

journal_title：Parasitology

authors： Wolstenholme AJ,Evans CC,Jimenez PD,Moorhead AR

更新日期：2015-09-01 00:00:00

abstract：:This study describes morphological changes during capsule formation of Trichinella spiralis with emphasis on nuclei within the capsule. The nuclei of the pre-existing muscle cell may become hypertrophied or degrade soon after the entrance of newborn larvae. Cytoplasm associated with these hypertrophied nuclei was baso...

journal_title：Parasitology

authors： Matsuo A,Wu Z,Nagano I,Takahashi Y

更新日期：2000-08-01 00:00:00

abstract：:Bile salts have been identified as an important trigger for excystation of Cryptosporidium oocysts but the hierarchy or synergism of this signal in relation to other triggers involved in excystation is poorly understood. In addition to excystation, bile salts have also been reported to increase the invasiveness of spo...

journal_title：Parasitology

authors： King BJ,Keegan AR,Phillips R,Fanok S,Monis PT

更新日期：2012-10-01 00:00:00

abstract：:Landscape epidemiology and landscape genetics combine advances in molecular techniques, spatial analyses and epidemiological models to generate a more real-world understanding of infectious disease dynamics and provide powerful new tools for the study of RNA viruses. Using dog rabies as a model we have identified how ...

journal_title：Parasitology

authors： Brunker K,Hampson K,Horton DL,Biek R

更新日期：2012-12-01 00:00:00

abstract：:An ultrastructural study has been performed on radiation-attenuated parasites fixed in situ during their extended stay in the lungs. At day 7 post-infection all parasites were located within blood vessels. In contrast to normally migrating parasites, at days 13 and 21 post-infection the majority of radiation-attenuate...

journal_title：Parasitology

authors： Mastin A,Bickle QD,Wilson RA

更新日期：1985-08-01 00:00:00

abstract：:Adults of the porocephalid pentastomid Porocephalus crotali infect the lung of rattlesnake definitive hosts and larvae develop in rat intermediate hosts. In the latter, nymphs encyst within a variety of tissue sites (commonly abdominal fat bodies and lungs) and each becomes the focus of an eosinophilic granuloma. From...

journal_title：Parasitology

authors： McHardy P,Riley J,Huntley JF

更新日期：1993-01-01 00:00:00

abstract：:Protoscoleces of Echinococcus granulosus absorb the L-amino acids proline, methionine, leucine, alanine, serine, phenylalanine, lysine and glutamic acid by a combination of mediated transport and diffusion. All eight amino acids were accumulated against a concentration gradient. Comparison of Kt and Vmax values sugges...

journal_title：Parasitology

authors： Jeffs SA,Arme C

更新日期：1987-08-01 00:00:00

abstract：:Multiple infections, those by more than one parasite in the same erythrocyte, may be adaptive for the malarial parasite as a means to ensure fertility. Alternatively they may simply be the consequence of a non-adaptive process forcing several parasites to compete for resources in one host cell. Avian hosts infected wi...

journal_title：Parasitology

authors： Martínez-de la Puente J,Merino S,Tomás G,Moreno J,Morales J,Lobato E

更新日期：2006-01-01 00:00:00