Impaired health status and increased incidence of diseases in Toxoplasma-seropositive subjects - an explorative cross-sectional study.

abstract：:A collection of stocks of Trypanosoma brucei rhodesiense isolated in Kenya have been examined for electrophoretic variation in 20 enzymes. The results obtained have been analysed in order to determine whether these trypanosomes are diploid and undergo mating and to determine the genetic distance between T. b. rhodesie...

journal_title：Parasitology

authors： Tait A,Barry JD,Wink R,Sanderson A,Crowe JS

更新日期：1985-02-01 00:00:00

abstract：:Eukaryotic 5S rRNA, synthesized by RNA polymerase III (Pol III), is an essential component of the large ribosomal subunit. Most organisms contain hundreds of 5S rRNA genes organized into tandem arrays. However, the genome of the protozoan parasite Leishmania major contains only 11 copies of the 5S rRNA gene, which are...

journal_title：Parasitology

authors： Moreno-Campos R,Florencio-Martínez LE,Nepomuceno-Mejía T,Rojas-Sánchez S,Vélez-Ramírez DE,Padilla-Mejía NE,Figueroa-Angulo E,Manning-Cela R,Martínez-Calvillo S

更新日期：2016-12-01 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：:Why do parasites kill their hosts? During this past decade, research in three different areas; evolutionary ecology, medical microbiology, and population genetics has provided theory and data that address this and related questions of selection and the evolution and maintenance of parasite virulence. A general theory ...

journal_title：Parasitology

authors： Levin BR,Svanborg Edén C

更新日期：1990-01-01 00:00:00

abstract：:In order to investigate the phenomenon of age-related immunity to visceral leishmaniasis, a 1 year prospective survey was carried out on 5671 people in a Leishmania infantum focus in north-west Iran. The average incidence rate of infection since 1985 was 2.8%/year with all ages equally at risk. One in 13 infections in...

journal_title：Parasitology

authors： Davies CR,Mazloumi Gavgani AS

更新日期：1999-09-01 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：:Development and forward migration of Leishmania parasites in the sandfly gut is accompanied by morphological transformation to highly motile, non-dividing 'metacyclic' forms. Previous studies in vitro have demonstrated that this metacyclogenesis is associated with developmentally regulated changes in expression of two...

journal_title：Parasitology

authors： Davies CR,Cooper AM,Peacock C,Lane RP,Blackwell JM

更新日期：1990-12-01 00:00:00

abstract：:Immunological and structural changes in the thymus and pronephros of Cyprinus carpio infected with the blood fluke, Sanguinicola inermis for 30 days, and exposed to 0.5 mg NH4+/1 for 48 and 168 h were investigated. Ultrastructural observations revealed cell disruption and highly vacuolated cytoplasm in the thymus. Of ...

journal_title：Parasitology

authors： Schuwerack PM,Lewis JW,Hoole D,Morley NJ

更新日期：2001-03-01 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：: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：:We studied the monogenean communities of 34 species of butterflyfish from the tropical Indo-West Pacific, identifying 13 dactylogyrid species (including two species that are presently undescribed). Monogenean assemblages differed significantly between host species in terms of taxonomic structure, intensity and prevale...

journal_title：Parasitology

authors： Reverter M,Cutmore SC,Bray R,Cribb TH,Sasal P

更新日期：2016-10-01 00:00:00

abstract：:Judged by oocyst production, infections with Eimeria acervulina in birds immunized with E. maxima were consistently higher than in birds which had not been immunized. Oocyst production of E. maxima in birds previously infected with E. acervulina was greater, in three out of four experiments, than in control chickens,...

journal_title：Parasitology

authors： Rose ME

更新日期：1975-04-01 00:00:00

abstract：:Diseases caused by viruses are a constant and major problem for livestock production world wide. The diseases range from highly contagious acute forms with high mortality, to chronic disabling diseases with an insidious effect on production. Such diseases cannot be regarded as static in nature due to the highly mutabl...

journal_title：Parasitology

authors： Crowther JR

更新日期：1998-01-01 00:00:00

abstract：:Isolates of Trypanosoma cruzi from human patients, domestic and sylvatic animals and vector insects were obtained in different areas of Argentina. Electrophoretic patterns of enzymes from extracts of 95 isolates were analysed. On the basis of zymograms providing information on 10 loci, 12 zymodemes are described accor...

journal_title：Parasitology

authors： de Luca D'oro GM,Gardenal CN,Perret B,Crisci JV,Montamat EE

更新日期：1993-11-01 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：:Distribution of Leptorhynchoides thecatus (Acanthocephala: Rhadinorhynchidae) among the pyloric caeca and the relationship between site and rate of maturation were studied in laboratory infections of 10, 25 and 40 cystacanths fed to green sunfish, Lepomis cyanellus. After 1 week fish fed at each intensity had signific...

journal_title：Parasitology

authors： Ewald JA,Nickol BB

更新日期：1989-06-01 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 fine structure of the envelopes surrounding hatched and unhatched oncospheres of Hymenolepis nana has been investigated by transmission and scanning electron microscopy (SEM), together with light microscope histochemical observations of JB-4 embedded material. The oncosphere is surrounded by 3 layers--the capsule,...

journal_title：Parasitology

authors： Fairweather I,Threadgold LT

更新日期：1981-06-01 00:00:00

abstract：:Philasterides dicentrarchi causes a severe disease in turbot, and at present there are no drugs available to treat infected fish. We have previously demonstrated that, in addition to the classical respiratory pathway, P. dicentrarchi possesses an alternative mitochondrial respiratory pathway that is cyanide-insensitiv...

journal_title：Parasitology

authors： Mallo N,Lamas J,Leiro JM

更新日期：2014-09-01 00:00:00

abstract：:Neurocysticercosis (NCC) is the most common parasitic disease of the central nervous system (CNS) caused by the larval form of the tapeworm Taenia solium. NCC has a long asymptomatic period with little or no inflammation, and the sequential progression to symptomatic NCC depends upon the intense inflammation associate...

journal_title：Parasitology

authors： Alvarez JI,Mishra BB,Gundra UM,Mishra PK,Teale JM

更新日期：2010-03-01 00:00:00

abstract：:Three cDNAs encoding rhoptry-associated protein 1 (RAP-1) homologues were found in the Babesia gibsoni EST database. Based on similarities to BgRAP-1a, which was identified previously by serological screening of a cDNA merozoite library, the two new genes were designated BgRAP-1b (33.7%) and BgRAP-1c (57%). Mice antis...

journal_title：Parasitology

authors： Terkawi MA,Amornthep A,Ooka H,Aboge G,Jia H,Goo YK,Nelson B,Yamagishi J,Nishikawa Y,Igarashi I,Kawazu SI,Fujisaki K,Xuan X

更新日期：2009-09-01 00:00:00

abstract：:Urinary schistosomiasis is an important source of human morbidity in Msambweni, Kenya, where the intermediate host snail, Bulinus nasutus is found in ponds and water pools. In the past, aquatic habitats in the area have been studied separately; however, recent collections of B. nasutus snails and shells indicated that...

journal_title：Parasitology

authors： Clennon JA,King CH,Muchiri EM,Kitron U

更新日期：2007-05-01 00:00:00

abstract：:The reproductive effort of Lepeophtheirus pectoralis (Müller O. F., 1776), a caligid copepod, which is commonly found infecting the European flounder, Platichthys flesus (Linnaeus, 1758), is studied in detail for the first time. Seasonal variation in body dimensions and reproductive effort are analysed. Data for 120 o...

journal_title：Parasitology

authors： Frade DG,Santos MJ,Cavaleiro FI

更新日期：2016-01-01 00:00:00

abstract：:Here, the validity of the assumption of concerted evolution of ribosomal regions in larval and adult Cooperia oncophora was assessed. In each of 4 individuals of this parasitic nematode, at least 78% of the sequences comprised different ITS variants. This implies that concerted evolution is not acting, which is corrob...

journal_title：Parasitology

authors： Mes TH,Cornelissen AW

更新日期：2004-08-01 00:00:00

abstract：:Trypanosoma evansi and Trypanosoma vivax are the most extensively distributed trypanosomes responsible for diseases in livestock. Western blot and indirect immunofluorescence assays revealed a high immunological cross-reaction between these two parasites. An antigen with an apparent molecular mass of 64 kDa (p64), whi...

journal_title：Parasitology

authors： Uzcanga G,Mendoza M,Aso PM,Bubis J

更新日期：2002-03-01 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：:In recent years, a malaria infection of humans in South East Asia, originally diagnosed as a known human-infecting species, Plasmodium malariae, has been identified as a simian parasite, Plasmodium knowlesi. This species had been subject to considerable investigation in monkeys since the 1930s. With the development of...

journal_title：Parasitology

authors： Butcher GA,Mitchell GH

更新日期：2018-01-01 00:00:00

abstract：:Intra-erythrocytic stages of malaria parasites can alter the surface of their host cells and release toxins which induce the production of cytokines, which in turn can up- or down-regulate the expression of adhesion receptors on the surface of microvascular endothelial cells. New adhesion receptors on endothelial cell...

journal_title：Parasitology

authors： Hommel M

更新日期：1997-01-01 00:00:00

abstract：:Host location by parasites can be achieved by either active or passive mechanisms. In spite of their significance, the efficacy of these methods has been little researched. High fecundity in parasites is discussed in terms of the role it plays in dispersal and transmission. Some concepts developed by mainstream behavi...

journal_title：Parasitology

authors： Rea JG,Irwin SW

更新日期：1994-01-01 00:00:00

abstract：:A 186 bp Echinococcus granulosus-specific repetitive element, TREg, was used to assess genetic variation between strains. In G7 genotype (pig strain) it has the characteristics of a satellite DNA element with a copy number of 23000 per haploid genome. Analysis, by sequencing of TREg monomers, showed a great degree of ...

journal_title：Parasitology

authors： Rosenzvit MC,Canova SG,Kamenetzky L,Guarnera EA

更新日期：2001-10-01 00:00:00