The complexity of the sylvatic cycle of Trypanosoma cruzi in Rio de Janeiro state (Brazil) revealed by the non-transcribed spacer of the mini-exon gene.

abstract：:Sexual size dimorphism (SSD) in mammals reveals the extent of sexual selection, which may in turn explain why males are often more infected by parasites than females and that parasites may contribute to the association between SSD and male-biased mortality. Here, we investigated the relationship between SSD in small m...

journal_title：Parasitology

authors： Morand S,De Bellocq JG,Stanko M,Miklisová D

更新日期：2004-10-01 00:00:00

abstract：:Unsporulated oocysts were recovered from the allantoic cavity of 5 chicken embryos inoculated with a single sporozoite of Eimeria tenella; some of these oocysts sporulated. Both macrogametes and microgametes are required for the formation of viable oocysts. The results conclusively demonstrate the bisexual nature of t...

journal_title：Parasitology

authors： Shirley MW,Millard BJ

更新日期：1976-12-01 00:00:00

abstract：:Balb/c mice infected with the gastrointestinal nematode Heligmosomoides bakeri were fed protein sufficient (PS, 24%) or deficient (PD, 3%) diets to investigate whether diet, infection or dose of larval challenge (0, 100 or 200 larvae) influenced gut pathophysiology and inflammation. Among the PS mice, worms were more ...

journal_title：Parasitology

authors： Tu T,Koski KG,Scott ME

更新日期：2008-01-01 00:00:00

abstract：:A 30-h in vitro susceptibility test of Plasmodium falciparum wild isolates to artemisinin, chloroquine, sulfadoxine/pyrimethamine and mefloquine was performed in Kibaha, Tanzania. A sigmoid Emax model was fitted to all data for each isolate and drug combination. Artemisinin and mefloquine exhibited 100% growth inhibit...

journal_title：Parasitology

authors： Alin MH

更新日期：1997-06-01 00:00:00

abstract：:Many marine fisheries in South American Atlantic coasts (SAAC) are threatened by overfishing and under serious risk of collapsing. The SAAC comprises a diversity of environments, possesses a complex oceanography and harbours a vast biodiversity that provide an enormous potential for using parasites as biological tags ...

journal_title：Parasitology

authors： Cantatore DM,Timi JT

更新日期：2015-01-01 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 serial passage of 3 strains of Eimeria from the chicken in embryonating turkey embryos is reported here. All 3 strains increased their reproduction in turkey embryos; reproduction being equal to or better than the same lines maintained in chicken embryos. Pathogenicity and immunogenicity trials conducted in chicke...

journal_title：Parasitology

authors： Kogut MH,Gore TC,Long PL

更新日期：1983-04-01 00:00:00

abstract：:Schistosomula of Schistosoma mansoni were incubated in RPMI 1640 medium containing 10% fetal calf serum, 10% human portal venous or 10% human peripheral venous sera in the presence of bromodeoxyuridine (BrdU) in order to measure differences in cell proliferation. The rates of cell proliferation as expressed by BrdU la...

journal_title：Parasitology

authors： Shaker YM,Wu CH,el-Shobaki FA,Ashour E,Khattab HM,Draz HM,Kamel R,Wu GY

更新日期：1998-10-01 00:00:00

abstract：:Cryptosporidia are important protozoan parasites of vertebrates, and a number of species and genotypes, with different host ranges, have been described. In this study a protocol was established for the detection and the genetic characterization of Cryptosporidium spp. isolated from various types of surface waters (riv...

journal_title：Parasitology

authors： Ward PI,Deplazes P,Regli W,Rinder H,Mathis A

更新日期：2002-04-01 00:00:00

abstract：:Acetylcholinesterase (AChE) is present in all stages of the life-cycle of schistosomes and is located in muscle and on the surface of the parasite. Metrifonate is a drug that inhibits AChE. We compared the AChEs from three schistosome species (Schistosoma mansoni, Schistosoma haematobium and Schistosoma bovis) that ha...

journal_title：Parasitology

authors： Camacho M,Tarrab-Hazdai R,Espinoza B,Arnon R,Agnew A

更新日期：1994-02-01 00:00:00

abstract：:The effects of a parasitic infection with the nematode Nippostrongylus brasiliensis on the degradation rates of cytoplasmic tRNA, rRNA and mRNA in rats have been investigated by measuring the renal excretion rates of the modified RNA catabolites N6-threoninocarbonyladenosine, pseudouridine and 7-methylguanine. Between...

journal_title：Parasitology

authors： Topp H,Duden R,Stephan U,Schöch G

更新日期：1998-02-01 00:00:00

abstract：:A new histozoic species of myxosporean was found to infect the gill filaments, gut, kidney and liver of the freshwater teleost Leporinus friderici, collected from the estuarine region of the Amazon, near the city of Belém, Brazil. The plasmodia show asynchronous development, at any one time composed of mature spores a...

journal_title：Parasitology

authors： Casal G,Matos E,Azevedo C

更新日期：2003-04-01 00:00:00

abstract：:The blackcap (Sylvia atricapilla) is a common Palearctic migratory warbler, and haemosporidian parasites are common in this species. However, genetic and phenotypic diversity of haemosporidians in warblers has been insufficiently investigated and poorly linked. We addressed this issue by combining molecular and micros...

journal_title：Parasitology

authors： Krizanauskiene A,Pérez-Tris J,Palinauskas V,Hellgren O,Bensch S,Valkiūnas G

更新日期：2010-02-01 00:00:00

abstract：:The genomes of more than 20 helminths have now been sequenced. Here we perform a meta-analysis of all sequenced genomes of nematodes and Platyhelminthes, and attempt to address the question of what are the defining characteristics of helminth genomes. We find that parasitic worms lack systems for surface antigenic var...

journal_title：Parasitology

authors： Zarowiecki M,Berriman M

更新日期：2015-02-01 00:00:00

abstract：:The induction of schistosomulicidal activity of peritoneal macrophages by concanavalin A-stimulated supernatants from long-term T-cell clones and by interferon-gamma (IFN-gamma) was investigated in detail. Optimal conditions of in vitro macrophage activation by T-cell clone supernatants were established. Macrophages f...

journal_title：Parasitology

authors： Kubelka CF,Ruppel A,Krammer PH,Gemsa D

更新日期：1986-04-01 00:00:00

abstract：:The parasitic roundworms Strongyloides stercoralis (in man) and Strongyloides ratti (in rats) employ environmentally controlled XX/XO sex determination with a pair of X chromosomes and two pairs of autosomes. Strongyloides papillosus (in sheep) has only two pairs of chromosomes, one of which combines the genetic mater...

journal_title：Parasitology

authors： Kulkarni A,Dyka A,Nemetschke L,Grant WN,Streit A

更新日期：2013-12-01 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：:We have determined the molar content of guanine + cytosine (GC content) of DNA of the filarial nematode (Brugia malayi, Brugia pahangi and Dirofilaria imitis) and of the free-living soil nematodes Caenorhabditis elegans and have analysed the DNA for the presence of methylcytosine. Two independent methods, thermal dena...

journal_title：Parasitology

authors： Rothstein N,Stoller TJ,Rajan TV

更新日期：1988-08-01 00:00:00

abstract：:Trypanosoma cruzi, causative agent of Chagas disease, co-infects its triatomine vector with its sister species Trypanosoma rangeli, which shares 60% of its antigens with T. cruzi. Additionally, T. rangeli has been observed to be pathogenic in some of its vector species. Although T. cruzi-T. rangeli co-infections are c...

journal_title：Parasitology

authors： Peterson JK,Graham AL,Elliott RJ,Dobson AP,Triana Chávez O

更新日期：2016-08-01 00:00:00

abstract：:The protein composition of Schistosoma mansoni was analysed by electrophoresis in polyacrylamide slab gel in the presence of sodium dodecyl sulphate. A high degree of identity existed between protein patterns obtain from immature and adult parasites of the two sexes. Some stage-and sex-specific components were indenti...

journal_title：Parasitology

authors： Ruppel A,Cioli D

更新日期：1977-12-01 00:00:00

abstract：:The public health significance of hookworm disease is briefly reviewed. The latest evidence confirms that blood loss caused by the worms' feeding activity in the gut is a contributing factor in the development of poor iron status leading to iron-deficiency anaemia. The World Health Organization has identified adolesce...

journal_title：Parasitology

authors： Crompton DW

更新日期：2000-01-01 00:00:00

abstract：:Hybridization events between Schistosoma species (Digenea, Platyhelminthes) are reported with increasing frequency, largely due to improved access to molecular tools. Nevertheless, little is known about the distribution and frequency of hybrid schistosomes in nature. Screening for hybrids on a large scale is complicat...

journal_title：Parasitology

authors： Boon NAM,Van Den Broeck F,Faye D,Volckaert FAM,Mboup S,Polman K,Huyse T

更新日期：2018-04-01 00:00:00

abstract：:The effects of dietary urea supplementation and of a 10-week trickle infection regime, simulating chronic exposure to Haemonchus contortus, on the zymogenic population of the abomasa of Hampshire Down lambs was examined. At necropsy a variety of parameters including plasma pepsinogen concentration, the wet weights of ...

journal_title：Parasitology

authors： Scott I,Stear MJ,Irvine J,Dick A,Wallace DS,McKellar QA

更新日期：1998-06-01 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：:Endotoxaemia has been described in cases of Human African trypanosomiasis (HAT), but it is unclear if this phenomenon influences inflammatory pathology either in the periphery or central nervous system (CNS). We studied endotoxin concentrations in the plasma and cerebrospinal fluid (CSF) of Trypanosoma brucei rhodesie...

journal_title：Parasitology

authors： Maclean L,Aboubaker EA,Kennedy PG,Sternberg JM

更新日期：2017-04-01 00:00:00

abstract：:Cystic echinococcosis (CE) is a high prevalence zoonosis among the rural population of Tacuarembó (Uruguay). The correlation between serological data and the incidence of risk factors was studied in a survey carried out in 1998 among rural communities where 480 individuals were examined by means of abdominal sonograph...

journal_title：Parasitology

authors： Hernández A,Cardozo G,Dematteis S,Baz A,Trias N,Nuñez H,Barragué A,López L,Fuentes J,López O,Ferreira C

更新日期：2005-04-01 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：:Plerocercoids of the pseudophyllidean cestode Schistocephalus solidus infect the three-spined stickleback Gasterosteus aculeatus, with important consequences for the biology of host fish. Techniques for culturing the parasite in vitro and generating infective stages that can be used to infect sticklebacks experimental...

journal_title：Parasitology

authors： Barber I,Scharsack JP

更新日期：2010-03-01 00:00:00

abstract：:African sleeping sickness is a parasitic disease transmitted through the bites of tsetse flies of the genus Glossina. We constructed mechanistic models for the basic reproduction number, R0, of Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense, respectively the causative agents of West and East African h...

journal_title：Parasitology

authors： Davis S,Aksoy S,Galvani A

更新日期：2011-04-01 00:00:00

abstract：:Cryptosporidium parvum is composed of multiple subtypes, which appear to be zoonotic or anthroponotic. Therefore, in order to understand the molecular epidemiology of this species and to control the zoonotic transmission, it is essential to identify the isolates at the subtype level. In the present study, 60.2% of 103...

journal_title：Parasitology

authors： Misic Z,Abe N

更新日期：2007-03-01 00:00:00