Synthesis and degradation of glycogen by Schistosoma mansoni worms in vitro.

abstract：:An enzymatic comparison has been made between isolates of Schistosoma mansoni from rats and humans in Guadeloupe and a Burundi isolate of S. rodhaini. Analyses of LDH, MDH, AcP, PGM, GPI, G6PDH and HK by isoelectric focusing provided no evidence for the involvement of S. rodhaini in the recent evolution of the schisto...

journal_title：Parasitology

authors： Rollinson D,Imbert-Establet D,Ross GC

更新日期：1986-08-01 00:00:00

abstract：:Two natural human interferon alpha preparations, (nHuIFN-alpha [Cantell]) and (nHuIFN-alpha [ISI]), were used for the oral treatment of cattle experimentally infected with Theileria parva parva. In the first experiment, 8 Friesian bulls were inoculated with a 1 in 10 dilution of a sporozoite stabilate of T.p. parva (M...

journal_title：Parasitology

authors： Young AS,Maritim AC,Kariuki DP,Stagg DA,Wafula JM,Mutugi JJ,Cummins JM,Richards AB,Burns C

更新日期：1990-10-01 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：:It is suspected that host-parasite interactions are influenced by climatic oscillations such as the North Atlantic Oscillation (NAO). However, the effects of climatic oscillations on host-parasite interactions have never been investigated. A long-term (1982-1999) dataset of the host snail Lymnaea stagnalis and tremato...

journal_title：Parasitology

authors： Doi H,Yurlova NI

更新日期：2011-07-01 00:00:00

abstract：:A procedure is described for the isolation of sub-cellular fractions from bloodstream forms of Trypanosoma brucei. The method leaves intact most of the nuclei, mitochondria and microbodies. All the fractions have been chemically characterized and tested for 10 enzymatic markers. About 5% of total cell protein was isol...

journal_title：Parasitology

authors： Rovis L,Baekkeskov S

更新日期：1980-06-01 00:00:00

abstract：:Neospora caninum is the causative agent of bovine neosporosis. A N. caninum cytoplasmic dynein LC8 light chain (NcDYNLL) protein was characterized in this study. Cytoplasmic dyneins, including DYNLLs, belong to the microtubule minus-end-directed motor proteins and are involved in many cellular processes. Previous micr...

journal_title：Parasitology

authors： Cao L,Fetterer R,Qu G,Zhang X,Tuo W

更新日期：2018-12-18 00:00:00

abstract：:Endotoxaemia has been described in cases of Human African trypanosomiasis (HAT), but it is unclear if this phenomenon influences inflammatory pathology either in the periphery or central nervous system (CNS). We studied endotoxin concentrations in the plasma and cerebrospinal fluid (CSF) of Trypanosoma brucei rhodesie...

journal_title：Parasitology

authors： Maclean L,Aboubaker EA,Kennedy PG,Sternberg JM

更新日期：2017-04-01 00:00:00

abstract：:Leishmania are obligatory intracellular parasitic protozoa that cycle between sand fly mid-gut and phagolysosomes of mammalian macrophages. They have developed genetically programmed changes in gene and protein expression that enable rapid optimization of cell function according to vector and host environments. During...

journal_title：Parasitology

authors： Tsigankov P,Gherardini PF,Helmer-Citterich M,Zilberstein D

更新日期：2012-08-01 00:00:00

abstract：:The acanthocephalan parasite, Polymorphus minutus, manipulates its intermediate hosts' (gammarids) behaviour, presumably to facilitate its transmission to the definitive hosts. A fundamental question is whether this capability has evolved to target gammarids in general, or specifically sympatric gammarids. We assessed...

journal_title：Parasitology

authors： Farahani S,Palsbøll PJ,Pen I,Komdeur J

更新日期：2020-11-13 00:00:00

abstract：:The surface coat of the 2nd-stage juveniles (J2) of plant-parasitic nematodes is considered to be involved in interactions with microorganisms in the soil and rhizosphere, as well as with the host plant. Characterization of surface antigens might be important in the development of new nematode control strategies. In t...

journal_title：Parasitology

authors： Sharon E,Spiegel Y,Salomon R,Curtis RH

更新日期：2002-08-01 00:00:00

abstract：:Harnessing the full utility of extensive gene sequences recently available for the economically important sea louse, Lepeophtheirus salmonis, requires the adaptation of modern molecular biology approaches to this non-model organism. Using a putative microsomal prostaglandin E synthase type-2 (PGES2) as a candidate gen...

journal_title：Parasitology

authors： Campbell EM,Pert CC,Bowman AS

更新日期：2009-07-01 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：:During the course of Schistosoma mansoni murine infection there is a dramatic increase of some immunoglobulins and S. mansoni-specific antibodies. The most substantial response is initiated after 40 days of infection and results in a prolonged increase of total IgG1, IgM and IgA. The maximum increase is respectively 2...

journal_title：Parasitology

authors： Bout D,Rousseaux R,Carlier Y,Capron A

更新日期：1980-04-01 00:00:00

abstract：:Most of our knowledge about the process of penetration of skin, by cercariae of Schistosoma mansoni, has been gained from studies carried out in vivo with laboratory animals. Human skin is significantly different from that of other animals but there are obvious practical difficulties in directly studying attachment an...

journal_title：Parasitology

authors： Khammo N,Bartlett A,Clothier RH,Whitfield PJ

更新日期：2002-01-01 00:00:00

abstract：:Antibodies against the retrovirus envelope glycoprotein (gp70) of mouse xenotropic retrovirus, BALB virus 2 (Bv2) reacted with the adult worms of Schistosoma japonicum and S. mansoni. This reaction was completely inhibited after adsorption of the antibodies with virions of retrovirus. The reactive schistosome antigen ...

journal_title：Parasitology

authors： Tanaka M,Iwamura Y,Amanuma H,Irie Y,Watanabe M,Watanabe T,Uchiyama Y,Yasuraoka K

更新日期：1989-08-01 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：: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：:Phylogenetic relationships among Trypanosoma rangeli isolates from man, wild mammals and triatomine bugs from widespread geographical origin were inferred by comparison of the small subunit of ribosomal gene sequences. The phylogenetic trees indicated that the subgenus Herpetosoma is polyphyletic and strongly supporte...

journal_title：Parasitology

authors： Da Silva FM,Noyes H,Campaner M,Junqueira AC,Coura JR,Añez N,Shaw JJ,Stevens JR,Teixeira MM

更新日期：2004-11-01 00:00:00

abstract：:The recent development of genetic methods allows the delineation of species boundaries, especially in organisms where morphological characters are not reliable to differentiate species. However, few empirical studies have used these tools to delineate species among parasitic metazoans. Here we investigate the species ...

journal_title：Parasitology

authors： Pérez-Ponce DE León G,García-Varela M,Pinacho-Pinacho CD,Sereno-Uribe AL,Poulin R

更新日期：2016-11-01 00:00:00

abstract：:Glycans at the surface of adult Schistosoma mansoni were investigated with gold-labelled lectins. The fragile complex of the glycans with the outer membranes could be preserved for electron microscopy by avoiding extensive pre-fixation with aldehydes and by introducing osmium-ferrocyanide as a membrane fixative. Male ...

journal_title：Parasitology

authors： Schmidt J

更新日期：1995-09-01 00:00:00

abstract：:Chemotactic responses of Strongyloides stercoralis infective larvae (L3) to sodium chloride (NaCl) were investigated by recording larval tracks on a saline gradient in agarose. On agarose, larvae migrated randomly, whereas when placed at 0.01 m NaCl larvae moved to approximately 1.1 m NaCl where they turned, headed do...

journal_title：Parasitology

authors： Forbes WM,Ashton FT,Boston R,Schad GA

更新日期：2003-08-01 00:00:00

abstract：:Lactating and nulliparous outbred Swiss (CF-1 strain) mice were infected at 12-16 weeks of age with Nippostrongylus brasiliensis or Trichinella spiralis. Lysophospholipase B levels in the intestinal tissue and faecal pellets were greatly in infected lactating mice in contrast to infected nulliparous mice. Correlated w...

journal_title：Parasitology

authors： Ngwenya BZ

更新日期：1980-08-01 00:00:00

abstract：:Seroprevalence data illustrate that human exposure to Toxocara is frequent. Environmental contamination with Toxocara spp. eggs is assumed to be the best indicator of human exposure, but increased risk of exposure has also been associated with many other factors. Reported associations are inconsistent, however, and th...

journal_title：Parasitology

authors： Kanobana K,Devleesschauwer B,Polman K,Speybroeck N

更新日期：2013-07-01 00:00:00

abstract：:Chagas disease chemotherapy is based on drugs that exhibit toxic effects and have limited efficacy, such as Benznidazole. Therefore, research into new chemotherapeutic agents from natural sources needs to be exploited. Apis mellifera venom consists of many biologically active molecules and has been reported to exhibit...

journal_title：Parasitology

authors： Adade CM,Chagas GS,Souto-Padrón T

更新日期：2012-09-01 00:00:00

abstract：:Avian malaria is a vector transmitted disease caused by Plasmodium and recent studies suggest that variation in its prevalence across avian hosts is correlated with a variety of ecological traits. Here we examine the relationship between prevalence and diversity of Plasmodium lineages in southeastern Amazonia and: (1)...

journal_title：Parasitology

authors： Fecchio A,Ellis VA,Bell JA,Andretti CB,D'Horta FM,Silva AM,Tkach VV,Weckstein JD

更新日期：2017-07-01 00:00:00

abstract：:The surface proteins and glycoproteins of red cells from Plasmodium berghei-infected blood have been radio-isotope labelled and compared with those of normal mouse erythrocytes using the following protein labelling probes: lactoperoxidase-catalysed radio-iodination of tyrosyl residues, periodate oxidation and NaB3H4 r...

journal_title：Parasitology

authors： Howard RJ,Smith PM,Mitchell GF

更新日期：1980-10-01 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：:Cryptosporidia are important protozoan parasites of vertebrates, and a number of species and genotypes, with different host ranges, have been described. In this study a protocol was established for the detection and the genetic characterization of Cryptosporidium spp. isolated from various types of surface waters (riv...

journal_title：Parasitology

authors： Ward PI,Deplazes P,Regli W,Rinder H,Mathis A

更新日期：2002-04-01 00:00:00

abstract：:Factors which may be important in the large-scale extraction of coccidial oocysts from faeces ha.ve been investigated with Eimeria tenella. Age of bird, inoculum, feeding status at the time of inoculation, period of collection, feeding status during collection, collection medium, homogenization and sieving, flotation,...

journal_title：Parasitology

authors： Ryley JF,Meade R,Hazelhurst J,Robinson TE

更新日期：1976-12-01 00:00:00

abstract：:Voltage-gated calcium (Ca2+) channels contribute to impulse propagation in excitable cells and also regulate intracellular levels of Ca2+. High voltage-activated (HVA) Ca2+ channels are heteromultimeric membrane proteins. The pore-forming, voltage-sensing subunit is the alpha1 subunit. We have cloned 3 HVA Ca2+ channe...

journal_title：Parasitology

authors： Kohn AB,Lea J,Roberts-Misterly JM,Anderson PA,Greenberg RM

更新日期：2001-11-01 00:00:00