Efficacy of narasin against hepatic and intestinal coccidiosis in rabbits.

abstract：SUMMARY:The spermatozoa of ticks are anomalous in many respects: they are very large, cytoplasm-rich cells which lack a flagellum but move with a peculiar gliding motility. Their metamorphosis after deposition in the female has been well documented, but many of the subsequent events in the career of the spermatozoa are...

journal_title：Parasitology

authors： Resler JH,Frazier JL,Shepherd JG,Modafferi JD

更新日期：2009-04-01 00:00:00

abstract：:The localization and distribution of neuropeptides in the nervous system of the liver fluke, Fasciola hepatica at different stages in the development of the adult fluke have been determined by an indirect immunofluorescence technique, using antisera to 19 vertebrate peptides and the invertebrate neuropeptide, FMRFamid...

journal_title：Parasitology

authors： Magee RM,Fairweather I,Johnston CF,Halton DW,Shaw C

更新日期：1989-04-01 00:00:00

abstract：:In the present study, a recombinant aminopeptidase P (rTgAPP) from Toxoplasma gondii was expressed in Escherichia coli to evaluate its enzyme parameters. The rTgAPP showed strong activity against a synthetic substrate for aminopeptidase P at pH 8·0 with a K m value of 0·255 µ m and a k cat value of 35·6 s-1. The overa...

journal_title：Parasitology

authors： Yang M,Zheng J,Jia H,Song M

更新日期：2016-09-01 00:00:00

abstract：:An enzyme-linked immunosorbent assay (ELISA) was used to detect antibodies to Encephalitozoon cuniculi in man, using spores derived from tissue culture as antigen. Negligible cross-reactions were found with other microsporidia of vertebrate or of invertebrate origin and there was no cross-reaction with Toxoplasma gond...

journal_title：Parasitology

authors： Hollister WS,Canning EU

更新日期：1987-04-01 00:00:00

abstract：:The biodiversity of Trypanosoma cruzi is one of the main factors complicating the understanding of its molecular epidemiology. As an alternative to classical genetic methods, investigators have used DNA-mediated transformation techniques to study this diversity. Recently, transient expression data were shown to correl...

journal_title：Parasitology

authors： Laurent JP,Swindle J

更新日期：1999-12-01 00:00:00

abstract：:The development of the free-living stages of Ostertagia ostertagi incubated at constant temperatures from 5 to 27 degrees C and in dung pats in the field was observed. The death rates were adequately described by a single exponential functional and the distribution of times for development by a delayed gamma density f...

journal_title：Parasitology

authors： Young RR,Nicholson RM,Tweedie RL,Schuh HJ

更新日期：1980-12-01 00:00:00

abstract：:The statistical aggregation of parasites among hosts is often described empirically by the negative binomial (Poisson-gamma) distribution. Alternatively, the Poisson-lognormal model can be used. This has the advantage that it can be fitted as a generalized linear mixed model, thereby quantifying the sources of aggrega...

journal_title：Parasitology

authors： Elston DA,Moss R,Boulinier T,Arrowsmith C,Lambin X

更新日期：2001-05-01 00:00:00

abstract：:Pinewood nematode, Bursaphelenchus xylophilus, a pine parasitic nematode, poses a serious threat to its host pine forests globally. When dispersal-stage larvae 4 (dauer, DL4) of B. xylophilus enters the new pine, it moults into propagative adult (dauer recovery) and reproduces quickly to kill the host pine. Here, we f...

journal_title：Parasitology

authors： Zhang W,Li Y,Pan L,Wang X,Feng Y,Zhang X

更新日期：2020-01-01 00:00:00

abstract：:Th2-biased inflammation with eosinophilia and IgE production is a hallmark of helminth infections. It is pronounced in hyperreactive onchocerciasis patients ('sowda' or 'local form'), who efficiently kill microfilariae resulting in severe dermatitis and lymphadenitis. In contrast, hyporeactive patients ('generalised f...

journal_title：Parasitology

authors： Korten S,Hoerauf A,Kaifi JT,Büttner DW

更新日期：2011-01-01 00:00:00

abstract：:The present study was undertaken to investigate the antiparasitic activity of extracellular products of Streptomyces albus. Bioactivity-guided isolation of chloroform extracts affording a compound showing potent activity. The structure of the compound was elucidated as salinomycin (SAL) by EI-MS, 1H NMR and 13C NMR. I...

journal_title：Parasitology

authors： Yao JY,Gao MY,Jia YY,Wu YX,Yin WL,Cao Z,Yang GL,Huang HB,Wang CF,Shen JY,Gu ZM

更新日期：2019-04-01 00:00:00

abstract：:The dynamic interaction of cells of the immune system with other cells, antigens and secreted factors determines the nature of an immune response. The response of individual cells is governed by the sequence of intracellular signalling events triggered following the association of cell surface molecules during cell-ce...

journal_title：Parasitology

authors： Goodridge HS,Harnett MM

更新日期：2005-01-01 00:00:00

abstract：:A double antibody sandwich ELISA technique has been developed for detection of antigens of African trypanosomes present in the sera of infected mammals. The assay uses a high titre, high affinity rabbit antiserum made to purified membranes of procyclic trypanosomes as "capture" reagent and a mixture of three biotin-la...

journal_title：Parasitology

authors： Liu MK,Pearson TW

更新日期：1987-10-01 00:00:00

abstract：:The complete sequence of the 18S small subunit (SSU) ribosomal DNA of Hammondia hammondi and Sarcocystis mucosa was obtained and compared to SSU rDNA sequences of Neospora caninum, Toxoplasma gondii, Besnoitia besnoiti, 2 species of Frenkelia, 3 species of Isospora, and 13 species of Sarcocystis. Analyses showed that ...

journal_title：Parasitology

authors： Jenkins MC,Ellis JT,Liddell S,Ryce C,Munday BL,Morrison DA,Dubey JP

更新日期：1999-08-01 00:00:00

abstract：:We have cloned a cDNA encoding a novel antigen from a Sarcoptes scabiei (Acari) cDNA library by immunoscreening with sera from S. scabiei-infected dogs. The antigen is encoded by a 2,157 bp mRNA with a predicted open reading frame of 719 amino acids (molecular weight 79 kDa). Our sequence analysis identified the prese...

journal_title：Parasitology

authors： Ljunggren EL,Bergström K,Morrison DA,Mattsson JG

更新日期：2006-01-01 00:00:00

abstract：:The World Health Organization announced in November 2014 at the fourth international meeting on 'the control of neglected zoonotic diseases - from advocacy to action', that intervention tools for eliminating Taenia solium taeniosis/cysticercosis (TSTC) are in place. The aim of this work was to elucidate theoretical ou...

journal_title：Parasitology

authors： Johansen MV,Trevisan C,Gabriël S,Magnussen P,Braae UC

更新日期：2017-01-01 00:00:00

abstract：:Previous studies of mating interactions between schistosome species from different evolutionary lineages in mice showed that mating is not random: heterospecific pairs form but, given the choice, the preference is for homospecific partners. Mating competition and change of mate were also demonstrated. Schistosoma mans...

journal_title：Parasitology

authors： Cosgrove CL,Southgate VR

更新日期：2002-09-01 00:00:00

abstract：:Parasites often induce behavioural changes in their host. However, it is not necessarily easy to determine whether these changes are representative of an adaptation of the parasite (parasite manipulation), an adaptive response of the host or a side-effect of infection. In a solitary parasitoid of Drosophila larvae (Le...

journal_title：Parasitology

authors： Varaldi J,Petit S,Boulétreau M,Fleury F

更新日期：2006-06-01 00:00:00

abstract：:Highly purified mitochondrial fractions have been isolated from the intraerythrocytic stages of two mammalian Plasmodium spp., Plasmodium yoelii of rodents and Plasmodium falciparum of man. Mitochondria of the former parasite are cristate whereas those of the latter are essentially acristate. Isolated mitochondria fro...

journal_title：Parasitology

authors： Fry M,Beesley JE

更新日期：1991-02-01 00:00:00

abstract：:The cumulative effect of co-infections between pathogen pairs on the haematological response of East African Short-horn Zebu calves is described. Using a longitudinal study design a stratified clustered random sample of newborn calves were recruited into the Infectious Diseases of East African Livestock (IDEAL) study ...

journal_title：Parasitology

authors： Van Wyk IC,Goddard A,de C Bronsvoort BM,Coetzer JA,Handel IG,Hanotte O,Jennings A,Lesosky M,Kiara H,Thumbi SM,Toye P,Woolhouse MW,Penzhorn BL

更新日期：2014-03-01 00:00:00

abstract：:Avian malaria is a mosquito-borne disease caused by Plasmodium spp. protozoa. Although these parasites have been extensively studied in North America and Eurasia, knowledge on the diversity of Plasmodium, its vectors and avian hosts in Africa is scarce. In this study, we report on natural malarial infections in free-r...

journal_title：Parasitology

authors： Aly MZY,Mohamed III,Sebak SI,Vanstreels RET,El Gendy AM

更新日期：2020-08-01 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：: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：:This paper reviews naturally occurring and synthetic compounds that either enhance immune defences or lower both natural and acquired immunity. Immunomodulatory agents used both for laboratory study and clinically for the management of immunologically based diseases are considered. ...

journal_title：Parasitology

authors： Nüssler AK,Thomson AW

更新日期：1992-01-01 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：:In a recent study by our group on the prevalence of intestinal parasitic infections and on the knowledge, attitudes and practices of local residents of Campos dos Goytacazes, Rio de Janeiro, Brazil, we observed that about 50% of the inhabitants were parasitized and had some knowledge of intestinal parasitic infections...

journal_title：Parasitology

authors： Pereira AP,Alencar MF,Cohen SC,Souza-Júnior PR,Cecchetto F,Mathias LS,Santos CP,Almeida JC,de Moraes Neto AH

更新日期：2012-05-01 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：:Uptake of radioactivity labelled purine bases and nucleosides by suspensions of Trypanosoma brucei and Trypanosoma congolense in bicine buffer was determined at 37 degrees C. With T. brucei, the rate of uptake of adenosine was much greater than that of the other compounds tested, the uptake of which decreased in the o...

journal_title：Parasitology

authors： James DM,Born GV

更新日期：1980-10-01 00:00:00

abstract：:An immunochromatographic test (ICT), using recombinant truncated P50 (P50t), for the detection of antibodies to Babesia gibsoni was developed and evaluated. Whereas all sera from specific pathogen-free dogs were clearly negative, all sera from dogs experimentally infected with B. gibsoni were clearly positive in the I...

journal_title：Parasitology

authors： Verdida RA,Xuan X,Fukumoto S,Huang X,Zhou J,Igarashi I,Claveria FG,Nagasawa H

更新日期：2005-12-01 00:00:00

abstract：:The radiation-attenuated schistosome vaccine induces a high level of protective immunity in rodents. In order to assess its potential relevance to man, we have tested its efficacy in the non-human primate Papio anubis. A vaccination regime consisting of 3 exposures of approximately 9000 cercariae irradiated with 30 or...

journal_title：Parasitology

authors： Yole DS,Pemberton R,Reid GD,Wilson RA

更新日期：1996-01-01 00:00:00

abstract：:Classical and reverse genetics remain invaluable tools for the scientific investigation of model organisms. Genetic analysis of endoparasites is generally difficult because the sexual adults required for crossing and other manipulations are usually hidden within their host. Strongyloides spp. and Parastrongyloides spp...

journal_title：Parasitology

authors： Streit A

更新日期：2017-03-01 00:00:00