Identification of an antigen of Onchocerca volvulus of possible diagnostic use.

abstract：:The discrete typing units (DTUs) of Trypanosoma cruzi that infect domestic dogs and cats have rarely been studied. With this purpose we conducted a cross-sectional xenodiagnostic survey of dog and cat populations residing in 2 infested rural villages in Pampa del Indio, in the humid Argentine Chaco. Parasites were iso...

journal_title：Parasitology

authors： Enriquez GF,Cardinal MV,Orozco MM,Lanati L,Schijman AG,Gürtler RE

更新日期：2013-03-01 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：: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：:The interactions in vivo between Plasmodium berghei sporozoites and Kupffer cells in rat livers were studied by transmission electron microscopy. By 10 and 15 min after inoculation, sporozoites were both free in the liver sinusoids and inside endocytotic vacuoles of the Kupffer cells. The latter cells were very active...

journal_title：Parasitology

authors： Meis JF,Verhave JP,Jap PH,Meuwissen JH

更新日期：1983-04-01 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：: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：: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：:Fourth-stage larvae of Ascaris suum, recovered from piglets at 11-22 days post-infection (p.i.), were examined by light microscopy for changes in the somatic musculature. During this time the estimated total number of muscle cells in the body increases from approximately 600 to 21 000 cells. This non-eutelic developme...

journal_title：Parasitology

authors： O'Grady RT

更新日期：1984-02-01 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 efficiency of treatment of human infections with the unicellular eukaryotic pathogens such as fungi and protozoa remains deeply unsatisfactory. For example, the mortality rates from nosocomial fungemia in critically ill, immunosuppressed or post-cancer patients often exceed 50%. A set of six systemic clinical azol...

journal_title：Parasitology

authors： Lepesheva GI,Friggeri L,Waterman MR

更新日期：2018-12-01 00:00:00

abstract：:We conducted the first comprehensive study on the spatiotemporal structure of trematode communities in the large-mouthed valve snail, Valvata macrostoma. A total of 1103 snails were examined monthly between May and October 2007 from Lake Konnevesi, Central Finland, from a shallow (1-2 m deep) and an offshore site (5-6...

journal_title：Parasitology

authors： Faltýnková A,Valtonen ET,Karvonen A

更新日期：2008-12-01 00:00:00

abstract：:Vitellogenin synthesis by the fat body has been monitored using in vitro culture and immunoprecipitation. This system was found to be efficient for measuring vitellogenin production in both non-infected Tenebrio molitor and those infected with Hymenolepis diminuta. In fat bodies from infected beetles, vitellogenin pro...

journal_title：Parasitology

authors： Webb TJ,Hurd H

更新日期：1996-04-01 00:00:00

abstract：:We estimate the incidence rate, serological conversion rate and basic case reproduction number (R0) of Leishmania infantum from a cohort study of 126 domestic dogs exposed to natural infection rates over 2 years on Marajó Island, Pará State, Brazil. The analysis includes new methods for (1) determining the number of s...

journal_title：Parasitology

authors： Quinnell RJ,Courtenay O,Garcez L,Dye C

更新日期：1997-08-01 00:00:00

abstract：:Nematodes are amongst the most successful and abundant organisms on the planet with approximately 30 000 species described, although the actual number of species is estimated to be one million or more. Despite sharing a relatively simple and invariant body plan, there is considerable diversity within the phylum. Nemat...

journal_title：Parasitology

authors： Gillan V,Devaney E

更新日期：2014-08-01 00:00:00

abstract：:Sex ratio theory posits that the adaptive proportion of male to female gametocytes of a malaria parasite within the vertebrate host depends on the degree of inbreeding within the vector. Gametocyte sex ratio could be phenotypically flexible, being altered based on the infection's clonal diversity, and thus likely inbr...

journal_title：Parasitology

authors： Osgood SM,Schall JJ

更新日期：2004-01-01 00:00:00

abstract：:SIV rats infected with a high dose (50,000 oocysts) of Eimeria nieschulzi displayed clinical symptoms of coccidiosis such as diarrhoea (days 6 and 7 post-primary infection) and weight loss (days 6-8 post-primary infection) and were completely immune to challenge with a similar dose. The ability of rats to produce tumo...

journal_title：Parasitology

authors： Smith NC,Ovington KS,Deplazes P,Eckert J

更新日期：1995-07-01 00:00:00

abstract：:This study quantifies the rate and intensity of re-infection with human hookworm and Schistosoma mansoni infection 12 months following successful treatment, and investigates the influence of socio-economic, geographical and environmental factors. A longitudinal study of 642 individuals aged over 5 years was conducted ...

journal_title：Parasitology

authors： Cundill B,Alexander N,Bethony JM,Diemert D,Pullan RL,Brooker S

更新日期：2011-09-01 00:00:00

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：:The period 1875-1925 was remarkable in the history of parasitology mainly for the elucidation of the life cycles of parasites causing important parasitic diseases and the incrimination of vectors in their transmission. These discoveries were made by a small number of scientists working in the tropics a number of whom ...

journal_title：Parasitology

authors： Cox FEG

更新日期：2017-10-01 00:00:00

abstract：:This study evaluated the effectiveness of low doses of benznidazole (BNZ) on continuous administration (BNZc), combined with allopurinol (ALO), in C57BL/6J and C3H/HeN mice infected with Trypanosoma cruzi Nicaragua strain and T. cruzi Sylvio-X10/4 clone. TcN-C57BL/6J was also treated with intermittent doses of BNZ (BN...

journal_title：Parasitology

authors： Rial MS,Scalise ML,López Alarcón M,Esteva MI,Búa J,Benatar AF,Prado NG,Riarte AR,Fichera LE

更新日期：2019-03-01 00:00:00

abstract：:The development of microgamonts was studied in the small intestine of a 2-day-old cat after oral inoculation with 10(7) bradyzoites of Sarcocystis hirsuta. The cat was given bradyzoites in 2 doses at 2 h apart and killed 4 h later. Gamonts were seen in parasitophorous vacuoles of goblet cells in the epithelium of the ...

journal_title：Parasitology

authors： Dubey JP

更新日期：1983-02-01 00:00:00

abstract：:Monoclonal antibodies reacting with pellicular antigens of Toxoplasma gondii tachyzoites have been selected among hybridomas produced against this organism by immunofluorescence assay. These antigens have been further characterized by immunofluorescence on living zoites, Western immunoblotting and immunoprecipitation ...

journal_title：Parasitology

authors： Couvreur G,Sadak A,Fortier B,Dubremetz JF

更新日期：1988-08-01 00:00:00

abstract：:Populations of hosts vary extensively in the types and numbers of parasites that the average individual contains. Understanding the factors that lead to this variation is an important goal for parasite ecologists. We characterized patterns of helminth component community structure in whitefish collected from a cluster...

journal_title：Parasitology

authors： Goater CP,Baldwin RE,Scrimgeour GJ

更新日期：2005-11-01 00:00:00

abstract：:We studied the component community of lung-worms of the harbour porpoise, attempting to establish the relative importance of ecological and evolutionary factors on its development. The lungs of 64 porpoises by-caught in Norwegian waters were examined for helminths. Three pseudaliid species were detected. The porpoises...

journal_title：Parasitology

authors： Balbuena JA,Aspholm PE,Andersen KI,Bjørge A

更新日期：1994-04-01 00:00:00

abstract：:Schistosoma mansoni depends for its survival on glycolysis. Two glycolytic enzymes, glyceraldehyde-3P-dehydrogenase and triose-phosphate dehydrogenase, found in both the adult and schistosomular tegument, have been reported to confer partial protection against cercarial infection. This paper describes the immunogenic ...

journal_title：Parasitology

authors： Mansour JM,McCrossan MV,Bickle QD,Mansour TE

更新日期：2000-05-01 00:00:00

abstract：:The current trend of antimony (Sb) unresponsiveness in the Indian subcontinent is a major impediment to effective chemotherapy of visceral leishmaniasis (VL). Although contributory mechanisms studied in laboratory-raised Sb-R parasites include an up-regulation of drug efflux pumps and increased thiols, their role in c...

journal_title：Parasitology

authors： Mandal G,Wyllie S,Singh N,Sundar S,Fairlamb AH,Chatterjee M

更新日期：2007-11-01 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：:A culture chamber fitted with a polycarbonate sieve has been used to isolate Plasmodium knowlesi merozoites as they are released from schizonts. A 3 mum pore-size sieve allows passage of normal erythrocytes and red cells containing rings and trophozoites and can be used to concentrate schizonts from a mixed cell popul...

journal_title：Parasitology

authors： Dennis ED,Mitchell GH,Butcher GA,Cohen S

更新日期：1975-12-01 00:00:00

abstract：:We describe a laboratory model using Eimeria falciformis and E. pragensis to investigate some of the interactions in double-species infections of Eimeria. Mice were given trickle infections by oral inoculation of 100 sporulated oocysts of one species at 3 or 4 day intervals throughout the experiments and, once immunit...

journal_title：Parasitology

authors： Shehu K,Nowell F

更新日期：1998-11-01 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