Integration and expression of murine retrovirus-related sequences in schistosomes.

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：: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 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：:The Anaplasma species are important globally distributed tick-transmitted bacteria of veterinary and public health importance. These pathogens, cause anaplasmosis in domestic and wild animal species including humans. Rhipicephalus, Ixodes, Dermacentor and Amblyomma genera of ticks are the important vectors of Anaplasm...

journal_title：Parasitology

authors： Atif FA

更新日期：2016-05-01 00:00:00

abstract：:Sporulated oocysts or oocyst hulls of Eimeria acervulina given via the crop, and oocyst juice or sporozoites inoculated directly into the intestinal lumen, were tested for their effects on the hypersensitivity of the intestines of immunized and susceptible birds. Only viable sporozoites consistently caused an increase...

journal_title：Parasitology

authors： Rose ME,Long PL,Bradley JW

更新日期：1975-12-01 00:00:00

abstract：:Neospora caninum infection is a significant cause of abortion in cattle. We investigated the tissue distribution of N. caninum in aborted bovine fetuses and dam blood samples by a nested PCR assay, and compared the nested PCR with ELISA in the diagnosis of N. caninum infection. In total, 26 aborted fetuses and 813 blo...

journal_title：Parasitology

authors： Yao L,Yang N,Liu Q,Wang M,Zhang W,Qian WF,Hu YF,Ding J

更新日期：2009-09-01 00:00:00

abstract：:Pasteuria penetrans is a Gram-positive endospore-producing bacterium that is a parasite of root-knot nematodes. Attachment of endospores to the cuticle of the nematode is the first stage in the infection process. Western blot analysis with monoclonal and polyclonal antibodies that recognize the 30 kDa heparin-binding ...

journal_title：Parasitology

authors： Mohan S,Fould S,Davies KG

更新日期：2001-09-01 00:00:00

abstract：:Oesophagostomum dentatum stages were investigated for glutathione S-transferase (GST) expression at the protein and mRNA levels. GST activity was detected in all stages (infectious and parasitic stages including third- and fourth-stage larvae of different ages as well as males and females) and could be dose-dependentl...

journal_title：Parasitology

authors： Joachim A,Ruttkowski B

更新日期：2008-09-01 00:00:00

abstract：:An M13 phage random 12-mers peptide library was used to screen cathepsin L mimotopes of Fasciola hepatica and to evaluate their immunogenicity in sheep. Seven clones showed positive reactivity to a rabbit anti-cathepsin L1/L2 antiserum in ELISA, and their amino acid sequences deduced by DNA sequencing were tentatively...

journal_title：Parasitology

authors： Villa-Mancera A,Quiroz-Romero H,Correa D,Ibarra F,Reyes-Pérez M,Reyes-Vivas H,López-Velázquez G,Gazarian K,Gazarian T,Alonso RA

更新日期：2008-10-01 00:00:00

abstract：:Analysis of the electrical properties of neurons in the motornervous system of Ascaris sutom suggests that it is largely an analogue system. The motorneurons do not conduct action potentials and they release transmitter tonically at their normal resting potential; transmitter release is increased or decreased as a con...

journal_title：Parasitology

authors： Davis RE,Stretton AO

更新日期：1996-01-01 00:00:00

abstract：:We cloned and expressed Echinostoma caproni HSP70 in Escherichia coli. This molecule presents an open reading frame (ORF) of 655 amino acids, and a theoretical molecular weight of 71 kDa. E. caproni HSP70 protein showed a high homology to other helminth molecules, major differences being located in the C-terminal regi...

journal_title：Parasitology

authors： Higón M,Monteagudo C,Fried B,Esteban JG,Toledo R,Marcilla A

更新日期：2008-10-01 00:00:00

abstract：:Virulence factors from the ROP2-family have been extensively studied in Toxoplasma gondii, but in the closely related Neospora caninum only NcROP2Fam-1 has been partially characterized to date. NcROP40 is a member of this family and was found to be more abundantly expressed in virulent isolates. Both NcROP2Fam-1 and N...

journal_title：Parasitology

authors： Pastor-Fernández I,Regidor-Cerrillo J,Jiménez-Ruiz E,Álvarez-García G,Marugán-Hernández V,Hemphill A,Ortega-Mora LM

更新日期：2016-01-01 00:00:00

abstract：:The flatworm nervous system employs a wide repertoire of neuroactive substances, including small chemical messengers, the so called classical transmitters, and several types of neuropeptides. A large body of research accumulated over four decades has provided a wealth of information on the tissue localization and effe...

journal_title：Parasitology

authors： Ribeiro P,El-Shehabi F,Patocka N

更新日期：2005-01-01 00:00:00

abstract：:Microvilli are developed on the surface of Schistosoma mansoni schistosomula during penetration of the host skin; they form rapidly but are lost approximately 90 min after penetration. Identical microvilli are also formed on schistosomula which have penetrated a mouse skin preparation in vitro, and on schistosomula pr...

journal_title：Parasitology

authors： McLaren DJ,Hockley DJ

更新日期：1976-10-01 00:00:00

abstract：:Expansion of human activities frequently results in habitat fragmentation, a phenomenon that has been widely recognized in the last decades as one of the major threats to world's biodiversity. The transformation of a continuous forest into a fragmented area results in a hyper-dynamic landscape with unpredictable conse...

journal_title：Parasitology

authors： Vaz VC,D'Andrea PS,Jansen AM

更新日期：2007-11-01 00:00:00

abstract：:Due to shared characteristics with snail haemocytes, the Biomphalaria glabrata embryonic (Bge) cell line has been used as a model in vitro system for the study of snail-trematode interactions. In this study, Bge cells were used to characterize the adherence of snail host cells to schistosome primary sporocysts, and to...

journal_title：Parasitology

authors： Castillo MG,Yoshino TP

更新日期：2002-12-01 00:00:00

abstract：:Epidemiological rate parameters of host generalist parasites are difficult to estimate, especially in cases where variation in parasite performance can be attributed to host species. Such cases are likely common for generalist parasites of sympatric grazing mammals. In this study, we combined data from experimental ex...

journal_title：Parasitology

authors： Beck MA,Goater CP,Colwell DD

更新日期：2015-09-01 00:00:00

abstract：:A time-course study was conducted to resolve discrepancies in the literature and better define aspects of the Eimeria maxima life cycle such, as sites of development and both morphology and number of asexual stages. Broiler chickens were inoculated orally with five million E. maxima oocysts (APU1), and were necropsied...

journal_title：Parasitology

authors： Dubey JP,Jenkins MC

更新日期：2018-07-01 00:00:00

abstract：:Immunopathological and ultrastructural studies were carried out on the gut of 30 specimens of powan Coregonus lavaretus (L.) from Lake Piediluco, Italy. The digestive tracts of 10 (33.3%) of the powan were found to harbour an acanthocephalan Dentitruncus truttae (Sinzar 1955). The numerous trunk spines of D. truttae r...

journal_title：Parasitology

authors： Dezfuli BS,Lui A,Giovinazzo G,Boldrini P,Giari L

更新日期：2009-07-01 00:00:00

abstract：:A distinct 8 kDa calcium-binding protein (CaBP) is preferentially expressed at the cercarial stage during the life-cycle of the schistosome. Available data indicate that this CaBP may be associated with tissue/organ remodelling (involving protein degradation and synthesis of new proteins) during transformation of the ...

journal_title：Parasitology

authors： Ram D,Ziv E,Lantner F,Schechter I

更新日期：2003-10-01 00:00:00

abstract：:We studied the pattern of infection and the inter-annual variation and individual factors affecting the infection of 2 species of nasopharyngeal bot flies, Cephenemyia auribarbis and Pharyngomyia picta (Diptera: Oestridae), in a population of Iberian red deer (Cervus elaphus hispanicus) from south central Spain (10 an...

journal_title：Parasitology

authors： Vicente J,Fierro Y,Martínez M,Gortázar C

更新日期：2004-09-01 00:00:00

abstract：:cDNA-AFLP (cDNA-Amplified Fragment Length Polymorphism)-based strategy has been used to identify levamisole (LEV) resistance markers in the nematode Haemonchus contortus. Transcript profiles of adult nematodes from two LEV-resistant and two susceptible isolates were compared. Among the 17 280 transcript-derived fragme...

journal_title：Parasitology

authors： Neveu C,Charvet C,Fauvin A,Cortet J,Castagnone-Sereno P,Cabaret J

更新日期：2007-01-01 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：: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：:Little is known about the effects of infection with Borrelia burgdorferi, the bacterium that causes Lyme disease, on its tick vectors. The purpose of this study was to determine the behavioural and ecological effects of infection by the bacterium in nymphal and adult black-legged (Ixodes scapularis) ticks. We found th...

journal_title：Parasitology

authors： Lefcort H,Durden LA

更新日期：1996-08-01 00:00:00

abstract：:The rapid elimination of the intestinal phase of Trichinella spiralis in NIH mice is associated with progressive inflammation of the intestinal tract. The non-specific effects of this inflammation were studied in mice concurrently infected with an unrelated parasite, Hymenolepis diminuta, which does not stimulate a vi...

journal_title：Parasitology

authors： Behnke JM,Bland PW,Wakelin D

更新日期：1977-08-01 00:00:00

abstract：:Receptors interacting with terminal sugars as ligands are involved in the binding of Leishmania donovani promastigotes to the macrophage surface and their subsequent internalization. Mannose and glucose are specifically involved in the binding process. Decreased binding occurs to macrophages already infected with L. d...

journal_title：Parasitology

authors： Dutta M,Bandyopadhyay R,Basu MK

更新日期：1994-08-01 00:00:00

abstract：:Laboratory experiments indicated that the active life-span of the cercariae of Cryptocotyle lingua was temperature-dependent. An increase in water temperature and population age both correlated with a tendency for the organisms to become decaudate. The larvae were strongly photoresponsive to lateral light but with tim...

journal_title：Parasitology

authors： Rea JG,Irwin SW

更新日期：1992-08-01 00:00:00

abstract：:In an interconnected world, the international pet trade on wild animals is becoming increasingly important. As a consequence, non-native parasite species are introduced, which affect the health of wildlife and contribute to the loss of biodiversity. Because the investigation of parasite diversity within vulnerable hos...

journal_title：Parasitology

authors： Héritier L,Verneau O,Breuil G,Meistertzheim AL

更新日期：2017-04-01 00:00:00

abstract：:The major transaminase in Heligmosomoides polygyrus, Panagrellus redivivus and rat liver was the 2-oxoglutarate-glutamate system, with relatively few amino acids acting as donors for the pyruvate-alanine and oxaloacetate-aspartate systems. The relative effectiveness of the different amino acid donors in the three tran...

journal_title：Parasitology

authors： Grantham BD,Barrett J

更新日期：1986-12-01 00:00:00