Identification and characterization of an asparaginyl proteinase (legumain) from the parasitic nematode, Haemonchus contortus.

abstract：:Recent studies of the forces behind the diversification of parasite assemblages have shed light on many aspects of parasite biodiversity. By using only parasite species richness as their measure of diversity, however, previous investigations have ignored the relatedness among parasite species and the taxonomic structu...

journal_title：Parasitology

authors： Luque JL,Mouillot D,Poulin R

更新日期：2004-06-01 00:00:00

abstract：:Analysis of the electrical properties of neurons in the motornervous system of Ascaris sutom suggests that it is largely an analogue system. The motorneurons do not conduct action potentials and they release transmitter tonically at their normal resting potential; transmitter release is increased or decreased as a con...

journal_title：Parasitology

authors： Davis RE,Stretton AO

更新日期：1996-01-01 00:00:00

abstract：:The tegumental surface of Schistosoma mansoni sporocysts is the site of both nutritive and immunological interactions with haemolymph cells and plasma of Biomphalaria glabrata, the schistosome intermediate host. Within minutes of being placed in host plasma, sporocysts acquire plasma antigens, and within 3 h host plas...

journal_title：Parasitology

authors： Bayne CJ,Loker ES,Yui MA

更新日期：1986-06-01 00:00:00

abstract：:Planning of the control of Plasmodium falciparum malaria leads to a need for models of malaria epidemiology that provide realistic quantitative prediction of likely epidemiological outcomes of a wide range of control strategies. Predictions of the effects of control often ignore medium- and long-term dynamics. The com...

journal_title：Parasitology

authors： Smith T,Maire N,Ross A,Penny M,Chitnis N,Schapira A,Studer A,Genton B,Lengeler C,Tediosi F,de Savigny D,Tanner M

更新日期：2008-11-01 00:00:00

abstract：:A recombinant baculovirus-expressed hybrid protein containing epitopes for the C-terminal fragment of the Plasmodium falciparum precursor to the major merozoite surface antigens (PMMSA) and the tetrapeptide repeats of the circumsporozoite protein (CSP) was assessed for its immunogenicity. Murine MHC-II restriction of ...

journal_title：Parasitology

authors： Lockyer MJ,Cooper H,Tite J,Rowan W,Crowe JS

更新日期：1993-06-01 00:00:00

abstract：:Host-parasite interactions are shaped by the co-evolutionary arms race of parasite virulence, transmission success as well as host resistance and recovery. The virulence and fitness of parasites may depend on host condition, which is mediated, for instance, by host energy constraints. Here, we investigated to what ext...

journal_title：Parasitology

authors： Coors A,De Meester L

更新日期：2011-01-01 00:00:00

abstract：:We investigated the segregation of an intracellular microsporidian parasite during host cell division. A time-course experiment was carried out to examine the distribution of parasites relative to host chromosomal DNA via light and electron microscopy. Fluorescent light microscopy and EM studies showed that the parasi...

journal_title：Parasitology

authors： Terry RS,Dunn AM,Smith JE

更新日期：1999-01-01 00:00:00

abstract：:Engorged Ixodes ricinus nymphs collected from sheep resident in an upland UK field site were significantly lighter than nymphs that engorged on previously tick-naïve sheep, indicating that site-resident sheep continually exposed to ticks acquired anti-tick resistance. The weights of engorged nymphs that fed on natural...

journal_title：Parasitology

authors： Ogden NH,Casey AN,French NP,Adams JD,Woldehiwet Z

更新日期：2002-02-01 00:00:00

abstract：:Infection by larval Echinococcus granulosus is usually characterized by tight inflammatory control. However, various degrees of chronic granulomatous inflammation are also observed, reaching a high point in infection of cattle by the most prevalent parasite strain worldwide, which is not well adapted to this host spec...

journal_title：Parasitology

authors： Basika T,Muñoz N,Casaravilla C,Irigoín F,Batthyány C,Bonilla M,Salinas G,Pacheco JP,Roth J,Durán R,Díaz A

更新日期：2012-02-01 00:00:00

abstract：:The serial passage of 3 strains of Eimeria from the chicken in embryonating turkey embryos is reported here. All 3 strains increased their reproduction in turkey embryos; reproduction being equal to or better than the same lines maintained in chicken embryos. Pathogenicity and immunogenicity trials conducted in chicke...

journal_title：Parasitology

authors： Kogut MH,Gore TC,Long PL

更新日期：1983-04-01 00:00:00

abstract：:Small RNAs are important regulators of gene expression. They were first identified in Caenorhabditis elegans, but it is now apparent that the main small RNA silencing pathways are functionally conserved across diverse organisms. Availability of genome data for an increasing number of parasitic nematodes has enabled bi...

journal_title：Parasitology

authors： Britton C,Laing R,Devaney E

更新日期：2020-07-01 00:00:00

abstract：:Trichinella spiralis larvae infect and develop within skeletal muscle cells causing major changes to their mechanical properties. The aim of this investigation was to determine the effects of T. spiralis on the power output and fatigue resistance of the mammalian diaphragm under conditions simulating in vivo operation...

journal_title：Parasitology

authors： Harwood CL,Young IS,Lee DL,Altringham JD

更新日期：1996-12-01 00:00:00

abstract：:The amitochondriate parasitic protist Trichomonas vaginalis can utilize either glucose or maltose as carbon and energy source. The mechanisms of maltose utilization were explored with uptake experiments using radio-isotope labelled maltose in combination with the silicone-oil centrifugation technique and enzymatic ass...

journal_title：Parasitology

authors： ter Kuile BH,Müller M

更新日期：1995-01-01 00:00:00

abstract：:Interactions between infections of Trichinella spiralis and Nippostrongylus brasiliensis were studied in the NIH strain of mouse which is known to react strongly to T. spiralis. The course of N. brasiliensis infection in this strain of mouse is described and expulsion is shown to be accelerated in immunized mice and i...

journal_title：Parasitology

authors： Kennedy MW

更新日期：1980-02-01 00:00:00

abstract：:In parallel with massive research efforts in human schistosomiasis over the past 30 years, persistent efforts have been made to understand the basis for compatibility and incompatibility in molluscan schistosomiasis. Snail plasma contains molecules that are toxic to trematodes, but these seem to kill only species that...

journal_title：Parasitology

authors： Bayne CJ,Hahn UK,Bender RC

更新日期：2001-01-01 00:00:00

abstract：:Trophically transmitted parasites must trade-off own growth on one hand and energy drain from the intermediate host on the other hand, since killing the host before transmission to the next host is a dead end for both parasites and hosts. This challenge becomes especially intriguing when multiple parasites find themse...

journal_title：Parasitology

authors： Nordeide JT,Matos F

更新日期：2016-09-01 00:00:00

abstract：:The numbers, distribution in the small intestine, sexual development and growth (dry weight) of 5-week-old Moniliformis dubius (Acanthocephala) were investigated experimentally in adult, female CFHB rats fed on theoretically isoenergetic diets containing known amounts of fructose in combination with either maize-oil f...

journal_title：Parasitology

authors： Crompton DW,Keymer A,Singhvi A,Nesheim MC

更新日期：1983-02-01 00:00:00

abstract：:A cross-sectional sero-epidemiological study was performed in Magoda, Tanzania, an area where malaria is holoendemic. Blood samples were collected from children (1-4 years) and tested for IgG antibody reactivity against 2 recombinant protein fragments of Plasmodium falciparum Rhoptry-Associated Protein-1 (rRAP-1). The...

journal_title：Parasitology

authors： Alifrangis M,Lemnge MM,Moon R,Theisen M,Bygbjerg I,Ridley RG,Jakobsen PH

更新日期：1999-10-01 00:00:00

abstract：:The effects of dietary urea supplementation and of a 10-week trickle infection regime, simulating chronic exposure to Haemonchus contortus, on the zymogenic population of the abomasa of Hampshire Down lambs was examined. At necropsy a variety of parameters including plasma pepsinogen concentration, the wet weights of ...

journal_title：Parasitology

authors： Scott I,Stear MJ,Irvine J,Dick A,Wallace DS,McKellar QA

更新日期：1998-06-01 00:00:00

abstract：:Vertically transmitted parasites (VTPs) such as Wolbachia are expected not only to minimize the damage they inflict on their hosts, but also to protect their hosts against the damaging effects of coinfecting parasites. By modifying the fitness costs of the infection, VTPs can therefore play an important role in the ev...

journal_title：Parasitology

authors： Zélé F,Denoyelle J,Duron O,Rivero A

更新日期：2018-05-01 00:00:00

abstract：:Host behavioural modification by parasites is a common and well-documented phenomenon. However, knowledge on the complexity and specificity of the underlying mechanisms is limited, and host specificity among manipulating parasites has rarely been experimentally verified. We tested the hypothesis that the ability to in...

journal_title：Parasitology

authors： Hernandez RN,Fredensborg BL

更新日期：2015-11-01 00:00:00

abstract：:Myxozoans have been successfully used as tags for fish stock identification around the world. However, few studies using myxozoan tags have been carried out in the Southern Atlantic, a region with complex oceanography that constitutes a potentially suitable scenario for testing the utility of myxozoans as indicators. ...

journal_title：Parasitology

authors： Cantatore DM,Irigoitia MM,Holzer AS,Timi JT

更新日期：2016-05-01 00:00:00

abstract：:Studies of the kinetics of adenosine transport were carried out on the P1 and P2 transporters of drug-sensitive Trypanosoma evansi and its cloned derivative, resistant to the melaminophenyl arsenical Mel CY. Characterization of adenosine uptake was made by estimation of the maximum concentration taken up at time infin...

journal_title：Parasitology

authors： Suswam EA,Ross CA,Martin RJ

更新日期：2003-12-01 00:00:00

abstract：:Patterns of genetic subdivision in parasite populations can provide important insights into transmission processes and complement information obtained using traditional epidemiological techniques. We describe mitochondrial sequence variation in 265 Ascaris collected from 62 individual hosts (humans and pigs) from 35 h...

journal_title：Parasitology

authors： Anderson TJ,Romero-Abal ME,Jaenike J

更新日期：1995-02-01 00:00:00

abstract：:A one-year study of gastro-intestinal parasitism in a free-ranging population of maras at Whipsnade Wild Animal Park, UK, revealed a strong relationship between membership of social units and both intensity and prevalence of infection. The mara, a hystricomorph rodent from southern Argentina, has a social organization...

journal_title：Parasitology

authors： Porteous IS,Pankhurst SJ

更新日期：1998-03-01 00:00:00

abstract：:The understanding of the patterns and processes underlying the structure of parasite communities has progressed significantly in the last years; however, much of the evidence available to date on parasite community comes from unconfirmed studies. In this study the ectoparasite communities of 2 related rockfishes, Seba...

journal_title：Parasitology

authors： González MT,Oliva ME

更新日期：2006-09-01 00:00:00

abstract：:The presence of superoxide dismutase (SOD) activity in the bovine lungworm Dictyocaulus viviparus was examined using the xanthine-xanthine oxidase assay system and by non-denaturing PAGE followed by specific enzyme staining. High levels of activity were detected in excretory-secretory (ES) products of adult worms and ...

journal_title：Parasitology

authors： Britton C,Knox DP,Kennedy MW

更新日期：1994-08-01 00:00:00

abstract：:The Calliphoridae include some of the most economically significant myiasis-causing flies in the world - blowflies and screwworm flies - with many being notorious for their parasitism of livestock. However, despite more than 50 years of research, key taxonomic relationships within the family remain unresolved. This st...

journal_title：Parasitology

authors： McDonagh LM,Stevens JR

更新日期：2011-11-01 00:00:00

abstract：:Perkinsus marinus is a protozoan responsible for dramatic mortality in the Eastern oyster, Crassostrea virginica, but not in the Pacific oyster, C. gigas. To understand the host-parasite relationship, we inoculated P. marinus trophozoites into the shell cavity of C. gigas and measured, over 2 months, (i) intensity of ...

journal_title：Parasitology

authors： Romestand B,Corbier F,Roch P

更新日期：2002-10-01 00:00:00

abstract：:Most human cases of cryptosporidiosis are caused by Cryptosporidium parvum or Cryptosporidium hominis, but the use of molecular diagnostic methods has revealed that several other less common species or genotypes can also be involved. Here, we describe two unusual causes of cryptosporidiosis, one being the recently des...

journal_title：Parasitology

authors： Lebbad M,Beser J,Insulander M,Karlsson L,Mattsson JG,Svenungsson B,Axén C

更新日期：2013-12-01 00:00:00