Some observations on the sexual differentiation of Eimeria tenella using single sporozoite infections in chicken embryos.

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：:The mechanism by which Giardia lamblia exerts its pathogenicity is likely to be multifactorial. A 58 kDa enterotoxin was purified and characterized from the excretory-secretory product (ESP) of the parasite (Kaur et al. 2001). In the present study an attempt has been made to elucidate the mechanism of action of the ES...

journal_title：Parasitology

authors： Shant J,Ghosh S,Bhattacharyya S,Ganguly NK,Majumdar S

更新日期：2004-10-01 00:00:00

abstract：:Digenean parasites infecting four Cominella whelk species (C. glandiformis, C. adspersa, C. maculosa and C. virgata), which inhabit New Zealand's intertidal zone, were analysed using molecular techniques. Mitochondrial 16S and cytochrome oxidase 1 (COI) and nuclear rDNA ITS1 sequences were used to infer phylogenetic r...

journal_title：Parasitology

authors： Donald KM,Spencer HG

更新日期：2016-08-01 00:00:00

abstract：:High throughput technologies continue to develop in response to the challenges set by the genome projects. This article discusses how the techniques of both high throughput screening (HTS) and synthesis can influence research in parasitology. Examples of the use of targeted and phenotype-based HTS using unbiased compo...

journal_title：Parasitology

authors： Morgan RE,Westwood NJ

更新日期：2004-01-01 00:00:00

abstract：:Protoscoleces of Echinococcus granulosus absorb the L-amino acids proline, methionine, leucine, alanine, serine, phenylalanine, lysine and glutamic acid by a combination of mediated transport and diffusion. All eight amino acids were accumulated against a concentration gradient. Comparison of Kt and Vmax values sugges...

journal_title：Parasitology

authors： Jeffs SA,Arme C

更新日期：1987-08-01 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：: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：:The impact of immunization with gentamicin-attenuated Leishmania infantum (H-line) on the immunophenotypic profile of popliteal lymph node (PLN) and peripheral blood mononuclear cells (PBMCs) of dogs was assessed by flow cytometry and immunohistochemistry. Compared with the dogs infected with L. infantum wild-type (Gr...

journal_title：Parasitology

authors： Daneshvar H,Sedghy F,Dabiri S,Kamiabi H,Molaei MM,Phillips S,Burchmore R

更新日期：2012-11-01 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：: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：: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：: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 investigated changes in the behaviour of Stagnicola elodes associated with the emergence of Plagiorchis elegans cercariae. Within 15 min of the reduction in light intensity, which triggered the onset of cercarial emergence, infected snails moved to the top of the water column and remained there for 2-3 h. Seventy-n...

journal_title：Parasitology

authors： Lowenberger CA,Rau ME

更新日期：1994-07-01 00:00:00

abstract：:Various treatments are found to be moderately effective in managing Demodex-related diseases except tea tree oil (TTO) and terpinen-4-ol (T4O), which showed superior miticidal and anti-inflammatory effects in numerous clinical studies. Their possible effects include lowering mite counts, relieving Demodex-related symp...

journal_title：Parasitology

authors： Lam NSK,Long XX,Li X,Yang L,Griffin RC,Doery JC

更新日期：2020-12-01 00:00:00

abstract：:Alveolar echinococcosis (AE) is a zoonotic parasitic diseases caused by a cestode parasite known as Echinococcus multilocularis. The parasite has a wildlife cycle with definitive hosts (foxes) and small mammals as intermediate hosts (rodents) while humans are the accidental hosts. Parasite infection pressure relation ...

journal_title：Parasitology

authors： Khan A,Ahmed H,Sohail A,Alam F,Simsek S

更新日期：2020-03-01 00:00:00

abstract：:A metabolic pathway known as the mannitol cycle has been identified in Eimerian parasites. The pathway is a shunt off of the glycolytic pathway at fructose-6-phosphate (F6P). Two enzymes convert F6P to mannitol and two other enzymes are responsible for converting mannitol back to F6P when it is utilized. Although the ...

journal_title：Parasitology

authors： Schmatz DM

更新日期：1997-01-01 00:00:00

abstract：:Biochemical characterization of 137 Leishmania braziliensis isolates from South and Central America, and from selected endemic foci in Bolivia, Brazil and Colombia, performed by isoenzymatic electrophoresis using 10 enzymatic systems, showed a high enzymatic polymorphism (44 zymodemes obtained) based on the variation ...

journal_title：Parasitology

authors： Chouicha N,Lanotte G,Pratlong F,Cuba Cuba CA,Velez ID,Dedet JP

更新日期：1997-10-01 00:00:00

abstract：:Glucose uptake was examined in adult specimens of Proterometra macrostoma (Trematoda: Digenea) recovered from the stomach (endoparasites) and gills (ectoparasites) of longear sunfish, Lepomis megalotis. The endoparasitic forms transported glucose directly through the external body surface by Na+-independent, facilitat...

journal_title：Parasitology

authors： Uglem GL

更新日期：1987-02-01 00:00:00

abstract：:A cDNA clone codifying ribosomal protein L25 was isolated from a Leishmania braziliensis cDNA gene library. The alignment of the amino acid sequence deduced from this gene with other proteins revealed that this protein is related to the L23/25 rihosomal protein family. This is so because this protein shows, in its C-t...

journal_title：Parasitology

authors： González AC,Martínez E,Carmelo E,Piñero JE,Alonso V,Del Castillo A,Valladares B

更新日期：2002-07-01 00:00:00

abstract：:A study carried out on a sheep farm examined whether Toxoplasma gondii foetal infection and associated abortion occur in successive lambings. We identified 29 ewes that gave birth to lambs on at least 2 successive years over our study period, 2000-2003. Tissue samples from the progeny of these ewes were analysed by PC...

journal_title：Parasitology

authors： Morley EK,Williams RH,Hughes JM,Thomasson D,Terry RS,Duncanson P,Smith JE,Hide G

更新日期：2008-02-01 00:00:00

abstract：:Dr David Livingstone died on May 1st 1873. He was 60 years old and had spent much of the previous 30 years walking across large stretches of Southern Africa, exploring the terrain he hoped could provide new environments in which Europeans and Africans could cohabit on equal terms and bring prosperity to a part of the ...

journal_title：Parasitology

authors： Barrett MP,Giordani F

更新日期：2017-10-01 00:00:00

abstract：:Studies of the kinetics of adenosine transport were carried out on the P1 and P2 transporters of drug-sensitive Trypanosoma evansi and its cloned derivative, resistant to the melaminophenyl arsenical Mel CY. Characterization of adenosine uptake was made by estimation of the maximum concentration taken up at time infin...

journal_title：Parasitology

authors： Suswam EA,Ross CA,Martin RJ

更新日期：2003-12-01 00:00:00

abstract：:Two experiments were carried out in which calves reared parasite-free were infected with a single dose of 3rd-stage larvae of Cooperia oncophora. In the first experiment the calves received 20 000 or 200 000 infective larvae and they were autopsied 28 or 56 days after the infection. In the second experiment the doses ...

journal_title：Parasitology

authors： Borgsteede FH,Hendriks J

更新日期：1979-06-01 00:00:00

abstract：:We examine the evolution of microparasites in response to the immune system of vertebrate hosts. We first describe a simple model for an acute infection. This model suggests that the within-host dynamics of the microparasite will be a 'race' between parasite multiplication and a clonally expanding response by the host...

journal_title：Parasitology

authors： Antia R,Lipsitch M

更新日期：1997-01-01 00:00:00

abstract：:Solid experimental evidence indicates that EBA-175 is used as a ligand by the Plasmodium falciparum merozoite to bind to human RBC, via different binding processing fragments. Using synthetic peptides and specific receptor-ligand interaction methodology, we have identified 6 high-activity binding sequences from the EB...

journal_title：Parasitology

authors： Rodriguez LE,Urquiza M,Ocampo M,Suarez J,Curtidor H,Guzman F,Vargas LE,Triviños M,Rosas M,Patarroyo ME

更新日期：2000-03-01 00:00:00

abstract：:Population genetics of multi-host pathogens offers great potential for the understanding of their complex epidemiology but care must be taken to ensure that the sampling procedure does not bias estimates of population indices. The transfer of material to laboratory passage, in particular, runs the risk of bottleneckin...

journal_title：Parasitology

authors： Shrivastava J,Gower CM,Balolong E Jr,Wang TP,Qian BZ,Webster JP

更新日期：2005-11-01 00:00:00

abstract：:Leishmania produce several types of mucin-like glycoproteins called proteophosphoglycans (PPGs) some of which are secreted while others are found on the surface of promastigotes and amastigotes. These proteins are thought to be important in the transmission, invasion and subsequent intracellular survival of parasites....

journal_title：Parasitology

authors： Samant M,Sahasrabuddhe AA,Singh N,Gupta SK,Sundar S,Dube A

更新日期：2007-08-01 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 fine structure of the oncosphere of Hymenolepis nana has been investigated by transmission and scanning electron microscopy, together with light microscope observations of JB-4 embedded material. The outer surface of the oncosphere is covered by an epithelial layer, termed the embryonic epithelium. Cell types pres...

journal_title：Parasitology

authors： Fairweather I,Threadgold LT

更新日期：1981-06-01 00:00:00

abstract：:Like in other trypanosomatids D-glucose is a crucial source of energy to Trypanosoma rangeli, a non-pathogenic parasite that in Central and South America infects triatomine vectors and different mammalian species, including humans. In several trypanosome species, D-glucose transporters were already described and clone...

journal_title：Parasitology

authors： Miletti LC,Koerich LB,Pacheco LK,Steindel M,Stambuk BU

更新日期：2006-12-01 00:00:00