Visualization of Toxoplasma gondii stage conversion by expression of stage-specific dual fluorescent proteins.

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：:Bloodstream forms of Trypanosoma congolense (2 clones: ILNat3.1 and IL3000, and 4 stocks: IL2079, IL2466, IL3266 and CP-81) were continuously cultivated in vitro at 34-36 degrees C in the absence of feeder cell layers, using HMI-93 medium which was modified from Iscove's modified Dulbecco's MEM (Flow Laboratories, Irv...

journal_title：Parasitology

authors： Hirumi H,Hirumi K

更新日期：1991-04-01 00:00:00

abstract：:Two cDNAs encoding cysteine proteinases were isolated from a cDNA library constructed from feeding females of Heterodera glycines. The library was screened with a cysteine proteinase gene fragment originally amplified from cDNA of H. glycines. Database searches predict that 1 cDNA (hgcp-I) encodes a cathepsin L-like p...

journal_title：Parasitology

authors： Urwin PE,Lilley CJ,McPherson MJ,Atkinson HJ

更新日期：1997-06-01 00:00:00

abstract：:The occurrence of multiple-clone Plasmodium falciparum haploid blood-stage infections is a pre-requisite for cross-fertilization and genetic exchange at the diploid stage in the mosquito. Using monoclonal antibodies against 3 polymorphic blood-stage antigens, a method of two-colour differential immunofluorescence allo...

journal_title：Parasitology

authors： Conway DJ,Greenwood BM,McBride JS

更新日期：1991-08-01 00:00:00

abstract：:The host recognition and invasion process of Myxobolus cerebralis actinospores (triactinomyxon, TAM) was studied on a genetic level. A small-scale in vitro assay was developed to activate a large number of TAMs simultaneously, and to monitor the host invasion in the absence of live fish. The transcriptomes of non-acti...

journal_title：Parasitology

authors： Eszterbauer E,Kallert DM,Grabner D,El-Matbouli M

更新日期：2009-04-01 00:00:00

abstract：:An electron microscopical examination has been made of the fine structure and disposition of pancreatic polypeptide immunoreactive cells associated with the egg-forming apparatus in Diclidophora merlangi. The cell bodies are positioned in the parenchyma surrounding the ootype and taper to axon-like processes that exte...

journal_title：Parasitology

authors： Halton DW,Brennan GP,Maule AG,Shaw C,Johnston CF,Fairweather I

更新日期：1991-06-01 00:00:00

abstract：:The development and growth of Haemonchus contortus was studied in the stomach of the laboratory rabbit. Less than 1% of the ensheathed infective larvae given to rabbits became established, whereas after exsheathment in vitro under physiological conditions, 20-30% of the larvae administered developed to the 4th stage. ...

journal_title：Parasitology

authors： Mapes CJ,Gallie GJ

更新日期：1977-06-01 00:00:00

abstract：:The transmission from one host to another constitutes a challenging obstacle for parasites and is a key determinant of their fitness. Due to their complex life histories involving several different hosts, the free-living dispersal stages (cercariae) of digenean trematodes show a huge diversity in morphology and behavi...

journal_title：Parasitology

authors： Selbach C,Poulin R

更新日期：2018-09-01 00:00:00

abstract：:An egg-adapted line of Eimeria necatrix has now been passaged 40 times in the chorio-allantoic membranes of embryonated eggs. Between the 21st and 40th passage in eggs the parasite was subjected to a selection for precocious development, and its pre-patent period in this host is now 123-125 h. The parasite continued t...

journal_title：Parasitology

authors： Shirley MW,Bellatti MA,Millard BJ

更新日期：1982-04-01 00:00:00

abstract：:This study was conducted to quantify the association between meteorological variables and incidence of Plasmodium falciparum in areas with unstable malaria transmission in Ethiopia. We used morbidity data pertaining to microscopically confirmed cases reported from 35 sites throughout Ethiopia over a period of approxim...

journal_title：Parasitology

authors： Abeku TA,De Vlas SJ,Borsboom GJ,Tadege A,Gebreyesus Y,Gebreyohannes H,Alamirew D,Seifu A,Nagelkerke NJ,Habbema JD

更新日期：2004-06-01 00:00:00

abstract：:Theileria annulata infects and reversibly transforms bovine leucocytes. The parasite-transformed cells are immortalized, metastatic and express a number of metalloproteinases including matrix metalloproteinase 9 which they secrete. All the metalloproteinases observed on substrate gels are inhibited by tissue inhibitor...

journal_title：Parasitology

authors： Adamson RE,Hall FR

更新日期：1996-11-01 00:00:00

abstract：:Stratospheric ozone depletion threatens to increase exposure to ultraviolet (UV) radiation which is known to be a factor in a number of diseases. There is little doubt that cumulative exposure to UV radiation is important in the aetiology of non-melanoma skin cancers. Evidence is also strong for a link with cutaneous ...

journal_title：Parasitology

authors： Bentham G

更新日期：1993-01-01 00:00:00

abstract：:The objectives of this study were (a) to evaluate the sensitivity and specificity of foetal Doppler indices for the prediction of abnormal foetal heart rate (aFHR) at delivery after malaria crisis and (b) to test Doppler parameters against crisis duration for predicting aFHR. Every day during the malaria crisis, the u...

journal_title：Parasitology

authors： Arbeille P,Carles G,Georgescu M,Tobal N,Herault S,Bousquet F,Perrotin F

更新日期：2003-06-01 00:00:00

abstract：:Members of the phylum Microspora are a group of unusual, obligate intracellular eukaryotic parasites that infect a wide range of hosts. However, there are a limited number of microsporidial infections reported in avian hosts, and no parasite species has been defined as an avian pathogen. A microsporidian organism was ...

journal_title：Parasitology

authors： Snowden KF,Logan K,Phalen DN

更新日期：2000-07-01 00:00:00

abstract：:We have previously reported that the mechanisms of neuromyopathic damage induced by Trypanosoma cruzi are mediated by T cells and are parasite-strain dependent. In the present study our aim was to determine whether the humoral response against muscle and nervous system is also parasite-strain dependent. Of the sera fr...

journal_title：Parasitology

authors： Tekiel VS,Mirkin GA,Gonzalez Cappa SM

更新日期：1997-11-01 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：: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：:Nitric oxide (NO) produced by cytokine-activated macrophages is reported to be cytotoxic against the helminth Schistosoma mansoni, although this is a controversial issue. Previous work in our laboratory identified a fraction of S. mansoni soluble adult worm antigenic preparation (SWAP), named PIII, able to elicit sign...

journal_title：Parasitology

authors： Oliveira DM,Silva-Teixeira DN,Gustavson S,Oliveira SM,Goes AM

更新日期：2000-04-01 00:00:00

abstract：:The behaviour and development of Elasmosoma sp., near pergandei Ashm. (Neoneurinae: Braconidae: Hymenoptera), a parasite of the ant, Formica obscuriventris clivia Creighton, was studied in a coastal sand dune habitat in central Oregon over a 2-year period. Female wasps oviposited into the abdomen of major worker ants ...

journal_title：Parasitology

authors： Poinar G Jr

更新日期：2004-05-01 00:00:00

abstract：:A cDNA encoding a beta-galactoside-binding lectin (galectin) was identified by immunoscreening a Haemonchus contortus cDNA library with antisera from lambs vaccinated with a membrane protein complex (H-gal-GP) derived from the parasites' gut. The cDNA sequence, exhibiting a tandem repeat structure and designated Hco-g...

journal_title：Parasitology

authors： Newlands GF,Skuce PJ,Knox DP,Smith SK,Smith WD

更新日期：1999-11-01 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：:Ornithodoros moubata ticks were fed on blood infected with Babesia equi. However, the parasites were quickly cleared as evidenced by the disappearance of B. equi-specific ribosomal RNA from the ticks. We hypothesized that if the Babesia parasite can escape midgut-associated barriers a non-vector tick can become infect...

journal_title：Parasitology

authors： Battsetseg B,Matsuo T,Xuan X,Boldbaatar D,Chee SH,Umemiya R,Sakaguchi T,Hatta T,Zhou J,Verdida AR,Taylor D,Fujisaki K

更新日期：2007-01-01 00:00:00

abstract：:Laboratory experiments indicated that the active life-span of the cercariae of Cryptocotyle lingua was temperature-dependent. An increase in water temperature and population age both correlated with a tendency for the organisms to become decaudate. The larvae were strongly photoresponsive to lateral light but with tim...

journal_title：Parasitology

authors： Rea JG,Irwin SW

更新日期：1992-08-01 00:00:00

abstract：:Pentastomids comprise a highly specialized taxon of arthropod-like parasites that probably became adapted to the lungs of amphibians and reptiles early in their long evolutionary history. Few other macroparasites exploit this particular niche. Pentastomids are often large, long-lived and yet they cause little observab...

journal_title：Parasitology

authors： Riley J,Henderson RJ

更新日期：1999-01-01 00:00:00

abstract：:Vesiculated protoscoleces (VP) were produced by culturing freshly collected protoscoleces from Echinococcus granulosus horse liver hydatids in RPMI 1640 monophasic medium at 37 degrees C for 18 days. Half of the VP were used as such, the other half used after killing them by freeze-thawing. Nine-day-old chicken heart ...

journal_title：Parasitology

authors： Janssen D,De Rycke PH,De Ridder L

更新日期：1990-06-01 00:00:00

abstract：:The number of facilities in which customers make contact with cats before eating and drinking, called 'cat cafés', has recently increased in Tokyo, Japan. In a survey to clarify the possibility of zoonotic transmission in Giardia duodenalis, the infection rates of G. duodenalis in 321 stool samples of cats from 16 cat...

journal_title：Parasitology

authors： Suzuki J,Murata R,Kobayashi S,Sadamasu K,Kai A,Takeuchi T

更新日期：2011-04-01 00:00:00

abstract：:In this review, we envisage the host environment, not as a hostile one, since the schistosome thrives there, but as one in which the relationship between the two organisms consists of constant communication, through signalling mechanisms involving sense organs, surface glycocalyx, surface membrane and internal organs ...

journal_title：Parasitology

authors： Kusel JR,Al-Adhami BH,Doenhoff MJ

更新日期：2007-10-01 00:00:00

abstract：:Small vessels showing inflammatory cell infiltrates were invariably observed in the vicinity of intact Toxoplasma tissue cysts within the brains of mice congenitally infected with the protozoan. Lymphocytes were observed in intimate contact with the luminal aspect of the endothelium, penetrating into the thickened bas...

journal_title：Parasitology

authors： Sims TA,Hay J

更新日期：1995-02-01 00:00:00

abstract：:As more facts emerge regarding the ways in which E. multilocularis-derived molecules trigger the host immune response and modulate the host-parasite interplay, it becomes possible to envisage how the parasite can survive and proliferate in its intermediate host, while in other hosts it dies out. Through effects on cel...

journal_title：Parasitology

authors： Mejri N,Hemphill A,Gottstein B

更新日期：2010-03-01 00:00:00

abstract：:A distinct 8 kDa calcium-binding protein (CaBP) is preferentially expressed at the cercarial stage during the life-cycle of the schistosome. Available data indicate that this CaBP may be associated with tissue/organ remodelling (involving protein degradation and synthesis of new proteins) during transformation of the ...

journal_title：Parasitology

authors： Ram D,Ziv E,Lantner F,Schechter I

更新日期：2003-10-01 00:00:00