Abstract：
:The present work aimed at studying the possible association of HLA antigens with Entamoeba histolytica/E. dispar asymptomatic infection in a Mexican mestizo population. A case-control design was selected for evaluation of the role of genetic markers in parasite infection. For this purpose the HLA-A, HLA-B, and HLA-DR profiles of a population of asymptomatic E. histolytica/E. dispar adult cyst passers (cases) and a corresponding nonparasitized adult group (controls) followed for 12 months were identified. Entamoeba species were identified through zymodeme patterns and/or amplification of species-specific DNA sequences. A healthy, nonparasitized group of individuals was included as a control. Our results show that apparently, no specific HLA marker is associated with the asymptomatic cyst passers' condition. These findings have to be added to previous results in which, in contrast to a demonstrated association between HLA-DR3 and amebic liver abscess in Mexican mestizo adults and infants, no significant association with amebic rectocolitis was found.
journal_name
Parasitol Resjournal_title
Parasitology researchauthors
Valdez E,del Carmen Martínez M,Gómez A,Cedillo R,Arellano J,Pérez ME,Ramos F,Morán P,González E,Valenzuela O,Melendro EI,Ramiro M,Kretschmer R,Muñoz O,Ximénez Cdoi
10.1007/s004360050641subject
Has Abstractpub_date
1999-10-01 00:00:00pages
833-6issue
10eissn
0932-0113issn
1432-1955journal_volume
85pub_type
杂志文章abstract：:Calcareous corpuscles, known as mineral concretions in Platyhelminthes, may have special biological functions. In the present study we succeeded in the quantitative separation of calcareous corpuscles in plerocercoids of Spirometra mansoni (sparganum) using Ficoll. Purified calcareous corpuscles were reacted with crud...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360000241
更新日期：2000-09-01 00:00:00
abstract：:Ultrastructure of Fibrillaspora is highly similar to that of Berwaldia but the former is phylogenetically distant from the taxon annotated as Berwaldia schaefernai (Genbank accession # AY090042). It was shown recently, however, that the latter sequence was not derived from Berwaldia, and correct nucleotide sequence da...
journal_title：Parasitology research
pub_type： 杂志文章,已发布勘误
doi：10.1007/s00436-018-5786-x
更新日期：2018-04-01 00:00:00
abstract：:Trichinella spiralis infection results in the transformation of muscle cells into a new, non-muscular cell called the nurse cell, and the nurse cell-muscle larva complex is finally created. To investigate whether T. spiralis infectivity is NBL age-dependent, five groups of synchronous newborn larvae (sNBL) were obtain...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050550
更新日期：1999-04-01 00:00:00
abstract：:According to the genetic characterization by the analysis of the miniexon gene, strains of Trypanosoma cruzi can be classified into six discrete typing units (DTUs), and the DTU 1 into four distinct genotypes associated with different life cycles. While Chagas disease is endemic in Costa Rica, T. cruzi isolates from t...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-012-3000-0
更新日期：2012-10-01 00:00:00
abstract：:Ixodes holocyclus has a narrow, discontinuous distribution along the east coast of Australia. We studied ticks from 17 localities throughout the geographic range of this tick. The ITS2 of I. holocyclus is 793 bp long. We found nucleotide variation at eight of the 588 nucleotide positions (1.4%) that were compared for ...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-001-0533-z
更新日期：2002-03-01 00:00:00
abstract：:A total of 585 persons from several occupational groups (farmers, slaughterhouse staff, hunters, veterinarians) exposed to Toxocara infestations and 50 persons of a control group were tested for the presence of specific antibodies to the Toxocara canis antigen using an enzyme-linked immunosorbent assay and a western b...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-005-1469-5
更新日期：2005-11-01 00:00:00
abstract：:Investigations on the occurrence of trichodinid ciliates from fish caught in the Kiel Bight and Kiel Fjord (western Baltic Sea) were carried out between September 1996 and March 1997. Smears of the gills, fins, and skin of 120 Gadus morhua and 92 Platichthys flesus caught by fish traps and trammel nets revealed the pr...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050622
更新日期：1999-08-01 00:00:00
abstract：:Trypanosoma cruzi virulence factors include molecules expressed on the cell surface as well as those secreted or shed into the extracellular medium. Phosphatase activities modulate different aspects of T. cruzi infection, although no studies to date addressed the presence and activity of phosphatases in vesicles secre...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-014-3958-x
更新日期：2014-08-01 00:00:00
abstract：:We investigated patterns of helminth infection in two closely related rodents (social Rhabdomys pumilio occurring mainly in xeric habitats and solitary R. dilectus occurring mainly in mesic habitats) at 20 localities in different biomes of South Africa and asked if between-species differences were mainly caused by dif...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-017-5419-9
更新日期：2017-04-01 00:00:00
abstract：:This is the first report of cryptosporidiosis in a bactrian camel (Camelus bactrianus) in China. Two Cryptosporidium isolates derived from the same bactrian camel (3-year-old) in November 2005 and April 2006 were characterized using sequence and phylogenetic analysis of the small-subunit rRNA (18S rRNA), 70-kDa heat s...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-007-0851-x
更新日期：2008-04-01 00:00:00
abstract：:Benzimidazole anthelmintics are widely used against nematode, cestode and trematode parasites. The drugs undergo several enzyme-mediated reactions within the host animal that produce a number of metabolites. Although it has been shown that certain helminths, including Fasciola hepatica, can metabolise albendazole, not...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-003-1003-6
更新日期：2004-02-01 00:00:00
abstract：:A seasonal investigation on the occurrence of fishborne zoonotic trematodes (FZT) in economically important mono-cultured hybrid catfish and giant gouramy was conducted in the Mekong Delta of Vietnam. Fish from carp poly-culture and intensive small-scale integrated vegetable-aquaculture-animal husbandry farming (VAC) ...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-007-0633-5
更新日期：2007-10-01 00:00:00
abstract：:The structure modulation of follicular cells and the ovarian changes during fourth larval instar and pupal stage of the malaria vector mosquitoes Anopheles pharoensis Theobald were investigated using the light and electron microscopy. The generative organs consist of a pair of polytrophic ovaries (OV), which are oblon...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-014-4099-y
更新日期：2014-11-01 00:00:00
abstract：:The bacteria Anaplasma platys, Anaplasma phagocytophilum and Ehrlichia canis are tick-borne agents that cause canine vector-borne disease. The prevalence of these pathogens in South Eastern Europe is unknown with the exception of an isolated case of A. platys detected in a dog imported into Germany from Croatia. To ga...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-017-5611-y
更新日期：2017-11-01 00:00:00
abstract：:Schistosomiasis seriously affects human health in tropical regions. Its prevention is more important than treatment, raising the need for effective control methods. Recently, the role of nanomaterials in medical science has been growing. The present study aimed to evaluate the potential effects of silver (Ag) and gold...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-018-6093-2
更新日期：2018-12-01 00:00:00
abstract：:Filter-feeding molluscan shellfish can concentrate environmentally derived waterborne pathogens of humans, which can be utilized in the sanitary assessment of water quality. In the present study, oocysts of Cryptosporidium were detected in Bent mussels (Ischadium recurvum) at two Chesapeake Bay sites from which C. par...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050590
更新日期：1999-07-01 00:00:00
abstract：:The oviposition deterrent and ovicidal of seven herbal essential oils derived from Citrus sinensis, Cymbopogon citratus, Eucalyptus glubulus, Illicium verum, Lavandula angustifolia, Mentha piperita, and Zingiber cussumunar were assessed against the gravid female of housefly, Musca domestica L., under laboratory condit...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-014-3964-z
更新日期：2014-08-01 00:00:00
abstract：:Blastocytis sp. is the most common enteric protozoan in human, but its pathogenesis is still unclear. To study the infectious effects of Blastocytis sp. on tissue damage, we orally challenged the Sprague Dawley (SD) rats with different doses of Blastocytis subtype1 (ST1) and examined the histological changes. We found...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-013-3536-7
更新日期：2013-10-01 00:00:00
abstract：:A multicomponent DNA vaccine, encoding Toxoplasma gondii GRA1 and SAG1, was constructed and tested for its ability to confer protection. BALB/c mice were challenged with tachyzoites of the virulent T. gondii RH strain at 4 weeks following the last immunization, and immune responses and survival times were observed. Th...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-012-3047-y
更新日期：2012-11-01 00:00:00
abstract：:A detailed study of the surface topography of the echinostome digenean Mesorchis denticulatus (Rudolphi 1802) Dietz 1909 was carried out using the scanning electron microscope. The surface area of the redia is increased by microvilli, and ciliate sensory structures are common around the mouth. The cannibalistic behavi...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/BF00536336
更新日期：1987-01-01 00:00:00
abstract：:The nervous system of Cysticercus cellulosae, the metacestode stage of the tapeworm Taenia solium, was delineated using histochemical methods for the localization of the enzyme markers; nonspecific esterase and acetylcholinesterase. The main features of the nervous system include a pair of cerebral ganglia, a circumce...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/BF00936456
更新日期：1992-01-01 00:00:00
abstract：:Ras are key components of diverse signal transduction pathways and play important roles in growth and development. To know about growth regulation in Clonorchis sinensis, we have identified a full-length sequence encoding a ras-related protein (rap2) from our adult cDNA library. The open reading frame contains 561 bp ...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-010-2147-9
更新日期：2011-04-01 00:00:00
abstract：:Prevalence and intensity of gastrointestinal parasites were studied through a longitudinal survey in 400 horses over a 17-month period in an abattoir in Germany. Three hundred and ten horses (77.5 %) were demonstrated harbouring endoparasites either by direct recovery of parasites from the digestive tract and/or in te...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-012-3150-0
更新日期：2013-01-01 00:00:00
abstract：:Although cystic echinococcosis (CE) has been a recognized public health problem in Greece, molecular data are lacking regarding the types and prevalences of infecting strains of the etiological agent Echinococcus granulosus. Therefore, we investigated the prevalence of CE and determined the infecting genotypes in shee...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-007-0568-x
更新日期：2007-09-01 00:00:00
abstract：:The purpose of this paper is to disseminate, more widely, certain historically important aspects of research by O. Wilford Olsen on hookworms (Uncinaria lucasi) in northern fur seals (Callorhinus ursinus) and Steller sea lions (Eumatopias jubatus) in 1951 on St. Paul Island, Alaska. Highly meaningful facets of the res...
journal_title：Parasitology research
pub_type： 历史文章,杂志文章
doi：10.1007/s00436-005-1309-7
更新日期：2005-03-01 00:00:00
abstract：:Legionella were detected with the direct DNA extraction method, Legionella culture method, and free-living amoebae (FLA) culture method from weak alkaline carbonate spring water in Taiwan. Moreover, we also investigated the existence of Acanthamoeba, Hartmannella, and Naegleria, ubiquitous FLA in aquatic environments,...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-011-2366-8
更新日期：2011-11-01 00:00:00
abstract：:Aelurostrongylus abstrusus parasitizes the respiratory tract and can heavily affect the breathing and general condition of cats. Experimental infections of six cats were initiated by intragastric administration with 100 or 800 third-stage larvae (L3) obtained from the terrestrial snail Helix aspersa. First-stage larva...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-014-3783-2
更新日期：2014-04-01 00:00:00
abstract：:The accuracies of relative gene expressions as determined by quantitative real-time polymerase chain reaction are largely dependent on the variabilities of the reference genes used. Validation of the stabilities of reference genes under experimental conditions is an essential initial step for comparative studies on th...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-008-1195-x
更新日期：2009-01-01 00:00:00
abstract：:The ethanolic leaf extract of Cassia obtusifolia was investigated for their larvicidal and oviposition deterrence effects against Anopheles stephensi. Concentrations ranging from 25 to 125 mg/l were assessed at 24 h post-treatment against late third instar larvae. The leaf extract had significant larvicidal effect wit...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-008-1197-8
更新日期：2009-01-01 00:00:00
abstract：:This study aims to observe the histopathological alterations in schistosomula of Schistosoma japonicum induced by mefloquine. Mice were infected with S. japonicum cercariae, and after 14 days, a single dose of mefloquine (400 mg/kg) was administered orally. After 8 h, 24 h, 3 days, 7 days, and 14 days, groups of two t...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-009-1611-x
更新日期：2009-11-01 00:00:00
