RNA-interference methods for gene-knockdown in the sea louse, Lepeophtheirus salmonis: studies on a putative prostaglandin E synthase.

abstract：:Perkinsus marinus is a protozoan responsible for dramatic mortality in the Eastern oyster, Crassostrea virginica, but not in the Pacific oyster, C. gigas. To understand the host-parasite relationship, we inoculated P. marinus trophozoites into the shell cavity of C. gigas and measured, over 2 months, (i) intensity of ...

journal_title：Parasitology

authors： Romestand B,Corbier F,Roch P

更新日期：2002-10-01 00:00:00

abstract：:Chagas infection is a major endemic disease affecting Latin American countries. The persistence of Trypanosoma cruzi generates a chronic inflammatory reactivity that induces an immune response directed to the host's tissues. The effectiveness of the treatment in the chronic phase is still unsatisfactory due, amongst o...

journal_title：Parasitology

authors： Fauro R,Lo Presti S,Bazan C,Baez A,Strauss M,Triquell F,Cremonezzi D,Negrete OS,Willhuber GC,Paglini-Oliva P,Rivarola HW

更新日期：2013-06-01 00:00:00

abstract：:Adults of the porocephalid pentastomid Porocephalus crotali infect the lung of rattlesnake definitive hosts and larvae develop in rat intermediate hosts. In the latter, nymphs encyst within a variety of tissue sites (commonly abdominal fat bodies and lungs) and each becomes the focus of an eosinophilic granuloma. From...

journal_title：Parasitology

authors： McHardy P,Riley J,Huntley JF

更新日期：1993-01-01 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：:Mice fed 1.5 mg ochratoxin A (OTA) per kg body weight and infected with Trypanosoma brucei rhodesiense were compared with trypanosome-infected placebo-fed and uninfected OTA-fed controls. Uninfected OTA-fed mice showed fever, lethargy, facial and eyelid oedemas, mild hepatitis and nephritis, and high survival. Infecte...

journal_title：Parasitology

authors： Kibugu JK,Ngeranwa JJ,Makumi JN,Gathumbi JK,Kagira JM,Mwangi JN,Muchiri MW,Mdachi RE

更新日期：2009-03-01 00:00:00

abstract：:A comparison has been made of the interactions between passively transferred and actively acquired immunity in regulating populations of Taenia hydatigena and T. ovis. When ewes were grazed prior to parturition under a high infection pressure, immunity was transferred to their offspring for up to 8 weeks. A qualitativ...

journal_title：Parasitology

authors： Gemmell MA,Lawson JR,Roberts MG,Griffin JF

更新日期：1990-08-01 00:00:00

abstract：:The global seroprevalence of latent toxoplasmosis is estimated to be higher than 30%. The presence of slowly dividing parasites in tissue cysts located mainly in immunoprivileged organs was long considered asymptomatic. Recently, many studies have shown that latent Toxoplasma infections could have serious impacts on h...

journal_title：Parasitology

authors： Flegr J,Escudero DQ

更新日期：2016-12-01 00:00:00

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：:Cytoadherence of Plasmodium falciparum-infected erythrocytes to melanoma cells was analysed using strains or isolates of parasites expressing or not expressing knobs (K+ or K- phenotype) on the erythrocyte surface. Both K+ and K- parasites had the capacity to cytoadhere to melanoma cells. Using a panel of melanoma cel...

journal_title：Parasitology

authors： Ruangjirachuporn W,Afzelius BA,Paulie S,Wahlgren M,Berzins K,Perlmann P

更新日期：1991-06-01 00:00:00

abstract：:West-central China is an important endemic focus of both alveolar and cystic echinococcosis where several species of intermediate host are commonly infected with Echinococcus granulosus and E. multilocularis . Isolates of E. granulosus were collected from humans and other animals from different geographical areas of Q...

journal_title：Parasitology

authors： Yang YR,Rosenzvit MC,Zhang LH,Zhang JZ,McManus DP

更新日期：2005-10-01 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：:Twelve populations of bats were examined to determine the extent of interspecific associations in determining the species richness of intestinal helminth infracommunities. The pool of helminth species which was available to individual bats ranged from 2 to 21. The 'summed binomial' distribution was determined to under...

journal_title：Parasitology

authors： Lotz JM,Font WF

更新日期：1991-08-01 00:00:00

abstract：:Part of Robert T. Leiper's (1881-1969) lasting legacy in medical helminthology is grounded on his pioneering work on schistosomiasis (Bilharzia). Having undertaken many expeditions to the tropics, his fascination with parasite life cycles typically allowed him to devise simple preventive measures that curtailed transm...

journal_title：Parasitology

authors： Stothard JR,Kabatereine NB,Archer J,Al-Shehri H,Tchuem-Tchuenté LA,Gyapong M,Bustinduy AL

更新日期：2017-10-01 00:00:00

abstract：:Understanding the origin of invasive parasites and ecological transmission barriers on the distribution of mosquito-borne pathogens is enriched by molecular phylogenetic approaches now that large databases are becoming available. Here we assess the biogeographical relationships among haemosporidian blood parasites and...

journal_title：Parasitology

authors： Baillie SM,Brunton DH

更新日期：2011-12-01 00:00:00

abstract：:The surface morphology of fixed ovarian balls from female Moniliformis dubius, agd 12, 18, 26, 28, 42, 77, 105 and 118 days, has been examined by means of scanning electron microscopy. The appearance of the surface has been found to be variable between ovarian balls from worms of the same and different ages. Some part...

journal_title：Parasitology

authors： Parshad VR,Crompton DW,Martin J

更新日期：1980-10-01 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：:An endemic transmission cycle of Babesia microti was discovered in Colorado in the foothills of the Rocky Mountains. B. microti were found by PCR in 4 of 25 Ixodes spinipalpis tick pools tested (a 3.2 % minimum infection rate) and in 87% (13 of 15) of Microtus ochrogaster (the prairie vole) spleen and blood samples. U...

journal_title：Parasitology

authors： Burkot TR,Schneider BS,Pieniazek NJ,Happ CM,Rutherford JS,Slemenda SB,Hoffmeister E,Maupin GO,Zeidner NS

更新日期：2000-12-01 00:00:00

abstract：:When eggs of the monogenean Dictyocotyle coeliaca, a parasite from the body cavity of Raja naevus, are incubated in alternating 12 h periods of light and darkness at 12 degrees C the marginal hooklets appear between 75 and 90 days after collecting the eggs from the host's body cavity and hatching begins after about 10...

journal_title：Parasitology

authors： Kearn GC

更新日期：1975-02-01 00:00:00

abstract：:We examined the mechanism of action and compared the anthelmintic efficacy of cysteine proteinases from papaya, pineapple, fig, kiwi fruit and Egyptian milkweed in vitro using the rodent gastrointestinal nematode Heligmosomoides polygyrus. Within a 2 h incubation period, all the cysteine proteinases, with the exceptio...

journal_title：Parasitology

authors： Stepek G,Buttle DJ,Duce IR,Lowe A,Behnke JM

更新日期：2005-02-01 00:00:00

abstract：:Multiple infections, those by more than one parasite in the same erythrocyte, may be adaptive for the malarial parasite as a means to ensure fertility. Alternatively they may simply be the consequence of a non-adaptive process forcing several parasites to compete for resources in one host cell. Avian hosts infected wi...

journal_title：Parasitology

authors： Martínez-de la Puente J,Merino S,Tomás G,Moreno J,Morales J,Lobato E

更新日期：2006-01-01 00:00:00

abstract：:Depending on the extent of evolutionary divergence among parent taxa, hybrids may suffer from a breakdown of co-adapted genes or may conversely exhibit vigour due to the heterosis effect, which confers advantages to increased genetic diversity. That last mechanism could explain the success of hybrids when hybridizatio...

journal_title：Parasitology

authors： Planade B,Lena JP,Li H,Plenet S,Guegan JF,Thomas F,Hurtrez-Bousses S,Renaud F,Joly P

更新日期：2009-08-01 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：: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：:Merocyanin 540 (Mc540) is a fluorescent compound which is thought to bind to membranes in which there are substantial amounts of lipid in the lipid-crystalline phase. It is shown here to be of value in detecting the transformation by both mechanical and skin-penetration methods of the cercaria to the schistosomulum. T...

journal_title：Parasitology

authors： Foley M,Kusel JR,Garland PB

更新日期：1988-02-01 00:00:00

abstract：:The multicopy mini-exon-derived RNA (med RNA) locus of Leishmania donovani was enzymatically amplified by the polymerase chain reaction (PCR). The major 180 bp PCR product contained conserved med RNA gene sequences flanking the variable intergenic spacer from the med RNA gene tandem repeat. The oligonucleotide primers...

journal_title：Parasitology

authors： Hassan MQ,Ghosh A,Ghosh SS,Gupta M,Basu D,Mallik KK,Adhya S

更新日期：1993-12-01 00:00:00

abstract：:Potential mechanisms of immunoregulation have been investigated for the capacity to generate heterogeneity in the outcome of infection with helminth parasites. We have developed a mathematical model of the interaction between T cell and parasite populations, based on the assumption that activation of a Th1 CD4+ T cell...

journal_title：Parasitology

authors： Schweitzer AN,Anderson RM

更新日期：1992-12-01 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：: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：:Existing models of the basic case reproduction number (R0) for vector-borne diseases assume (i) that the distribution of vectors over the susceptible host species is homogeneous and (ii) that the biting preference for the susceptible host species rather than other potential hosts is a constant. Empirical evidence cont...

journal_title：Parasitology

authors： Kelly DW,Thompson CE

更新日期：2000-03-01 00:00:00

abstract：:The gastrointestinal nematode Heligmosomoides polygyrus bakeri shows enhanced survival in mice with colitis. As the antibody response plays an important role in antiparasitic immunity, antibodies against male and female L4 H. polygyrus were examined in mice with and without colitis. Levels of specific antibodies in th...

journal_title：Parasitology

authors： Maruszewska-Cheruiyot M,Donskow-Łysoniewska K,Krawczak K,Szewczak L,Joachimiak E,Doligalska M

更新日期：2020-11-01 00:00:00