Abstract:
:In Strongyloides ratti-infected rats, 2 peaks of egg excretion were observed; a large one with maximum egg production on days 7-8 of infection and a small more inconspicuous one around day 25. The second peak, which had been ignored in most studies, was produced by adults in the caecum and the colon. The adults were larger in length and had more embryonated eggs in the uterus compared with adults in the small intestine at day 25 post-infection. It is suggested that parasitic adults once expelled from the small intestine resettle and recover in the large intestine. Filter paper faecal culture carried out for 9 days at different days post-infection revealed that the total number of infective larvae that developed during the second peak was twice the number that developed during the first peak, despite the fact that total egg output during the second peak was less than one twentieth of the first peak. The results suggest that the small second peak was as important as the first one in the transmission of S. ratti.
journal_name
Parasitologyjournal_title
Parasitologyauthors
Kimura E,Shintoku Y,Kadosaka T,Fujiwara M,Kondo S,Itoh Mdoi
10.1017/s0031182099004631subject
Has Abstractpub_date
1999-08-01 00:00:00pages
221-6eissn
0031-1820issn
1469-8161journal_volume
119 ( Pt 2)pub_type
杂志文章相关文献
PARASITOLOGY文献大全abstract::Antibodies against the retrovirus envelope glycoprotein (gp70) of mouse xenotropic retrovirus, BALB virus 2 (Bv2) reacted with the adult worms of Schistosoma japonicum and S. mansoni. This reaction was completely inhibited after adsorption of the antibodies with virions of retrovirus. The reactive schistosome antigen ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000060996
更新日期:1989-08-01 00:00:00
abstract::The transmission from one host to another constitutes a challenging obstacle for parasites and is a key determinant of their fitness. Due to their complex life histories involving several different hosts, the free-living dispersal stages (cercariae) of digenean trematodes show a huge diversity in morphology and behavi...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182018000288
更新日期:2018-09-01 00:00:00
abstract::Murine monoclonal antibodies (mAbs) against Neospora caninum tachyzoites were produced to identify the cross-reactive antigens between N. caninum and Toxoplasma gondii. Ten mAbs recognizing cross-reactive antigens of both parasites were obtained and tentatively classified into 6 different groups based on their reactiv...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004006948
更新日期:2005-05-01 00:00:00
abstract::The complete small subunit ribosomal RNA (srRNA) gene of Theileria parva was cloned and sequenced. Two primers were designed which permitted the specific amplification of part of the Theileria srRNA gene from Theileria-infected cell line samples which were predominantly (> 95%) bovine DNA. The sequence of the central ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000067263
更新日期:1993-08-01 00:00:00
abstract::Entomopathogenic nematode infective juveniles are likely to encounter both uninfected and infected insects and host quality depends on the stage of the infection. We hypothesized that nematode response to infected hosts will change over the course of an infection. Here, we tested this hypothesis by focusing on the inf...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182006001880
更新日期:2007-05-01 00:00:00
abstract::Freshwater snails of the Bulinus forskalii group are one of four Bulinus species complexes responsible for the transmission of schistosomes in Africa and adjacent regions. The species status of these conchologically variable and widely distributed planorbids remains unclear, and parasite compatibility varies considera...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182001008381
更新日期:2001-01-01 00:00:00
abstract::Neospora caninum is an Apicomplexan protozoan that has the dog as a definitive host and cattle (among other animals) as intermediate hosts. It causes encephalopathy in dogs and abortion in cows, with significant loss in worldwide livestock. As any Apicomplexan, the parasite invades the cells using proteins contained i...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182010001290
更新日期:2011-03-01 00:00:00
abstract::Uptake of radioactivity labelled purine bases and nucleosides by suspensions of Trypanosoma brucei and Trypanosoma congolense in bicine buffer was determined at 37 degrees C. With T. brucei, the rate of uptake of adenosine was much greater than that of the other compounds tested, the uptake of which decreased in the o...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000056110
更新日期:1980-10-01 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
pub_type: 杂志文章
doi:
更新日期:1997-06-01 00:00:00
abstract::The respiratory chain of the procyclic stage of Trypanosoma brucei contains the standard complexes I through IV, as well as several alternative enzymes contributing to electron flow. In this work, we studied the function of an alternative NADH : ubiquinone oxidoreductase (NDH2). Depletion of target mRNA was achieved u...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S003118201200162X
更新日期:2013-03-01 00:00:00
abstract::Two natural human interferon alpha preparations, (nHuIFN-alpha [Cantell]) and (nHuIFN-alpha [ISI]), were used for the oral treatment of cattle experimentally infected with Theileria parva parva. In the first experiment, 8 Friesian bulls were inoculated with a 1 in 10 dilution of a sporozoite stabilate of T.p. parva (M...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000063241
更新日期:1990-10-01 00:00:00
abstract::The pre-feeding and feeding periods of larvae, nymphs and adults of Rhipicephalus appendiculatus on rabbits (Oryctolagus cuniculus) were investigated. Larvae and nymphs required at least 8-9 days after hatching and moulting respectively before they could attach and start feeding, while adults required at least 6-9 day...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000043195
更新日期:1976-02-01 00:00:00
abstract::A double antibody sandwich ELISA technique has been developed for detection of antigens of African trypanosomes present in the sera of infected mammals. The assay uses a high titre, high affinity rabbit antiserum made to purified membranes of procyclic trypanosomes as "capture" reagent and a mixture of three biotin-la...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000057735
更新日期:1987-10-01 00:00:00
abstract::Parasites of the genera Plasmodium and Haemoproteus (Apicomplexa: Haemosporida) are a diverse group of pathogens that infect birds nearly worldwide. Despite their ubiquity, the ecological and evolutionary factors that shape the diversity and distribution of these protozoan parasites among avian communities and geograp...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182017000208
更新日期:2017-06-01 00:00:00
abstract::In this review, we envisage the host environment, not as a hostile one, since the schistosome thrives there, but as one in which the relationship between the two organisms consists of constant communication, through signalling mechanisms involving sense organs, surface glycocalyx, surface membrane and internal organs ...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/S0031182007002971
更新日期:2007-10-01 00:00:00
abstract::Intact surface membrane vesicles were obtained and purified from the schistosomula of Schistosoma mansoni. The method of preparation of the vesicles involved treating the schistosomula in a buffered high salt medium for 1 h at 4 degrees C (Step 1), and then for 1 h at 25-37 degrees C (Step 2). Vesicles were formed fro...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000056717
更新日期:1984-12-01 00:00:00
abstract::The surface coat of the 2nd-stage juveniles (J2) of plant-parasitic nematodes is considered to be involved in interactions with microorganisms in the soil and rhizosphere, as well as with the host plant. Characterization of surface antigens might be important in the development of new nematode control strategies. In t...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182002001907
更新日期:2002-08-01 00:00:00
abstract::Polysporoplasma sparis infection was studied in gilthead sea bream from different mariculture systems of the Spanish coasts. Culture conditions influenced the infection dynamics, as the parasite appeared only in semi-intensive cultures and was not found in intensive closed systems nor in open ones. No clear seasonal p...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182098003758
更新日期:1999-03-01 00:00:00
abstract::Intestinal diarrheagenic polyparasitic infections are among the major public health concerns in developing countries. Here we examined stool specimens by microscopy, DNA dot blot and polymerase chain reaction (PCR) to evaluate the co-infection of four principal protozoans among amoebic dysentery cases from Northeast I...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182015000669
更新日期:2015-09-01 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
pub_type: 杂志文章
doi:10.1017/s0031182000053397
更新日期:1987-02-01 00:00:00
abstract::Fractionation of Schistosoma mansoni cercariae gland secretion on a Sephadex G-150 column followed by a Superose-12 column in an FPLC system, isolated a 47 kDa protease which migrated as a single band on SDS-PAGE gels. A monoclonal antibody (MAb) was produced which recognizes only the 47 kDa protease, and an immuno-af...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000074138
更新日期:1992-10-01 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
pub_type: 杂志文章
doi:10.1017/S0031182018000525
更新日期:2018-04-01 00:00:00
abstract::The diversity and prevalence of malaria parasites of the genera Plasmodium and Haemoproteus were determined in the globally-threatened Aquatic Warbler Acrocephalus paludicola. Birds were sampled during migration in Portugal and at the wintering quarters in Senegal and parasites were detected using molecular methods. O...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182015000414
更新日期:2015-08-01 00:00:00
abstract::The genetic basis of virulence in a line (YM) of Plasmodium yoelii yoelii was investigated in a cross with a mild line (A/C). The blood forms of the virulent line developed extensively in mature erythrocytes of mice, causing death of the host within 7 days; infections with the mild line were normally restricted to ret...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000048484
更新日期:1976-04-01 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
pub_type: 杂志文章
doi:10.1017/s0031182000048344
更新日期:1977-08-01 00:00:00
abstract::Insecticide-treated nets (ITNs) are a major tool to control malaria. Over recent years increased ITN coverage has been associated with decreased malaria transmission. However, ITN 'misuse' has been increasingly reported and whether this emergent behaviour poses a threat to successful malaria control and elimination is...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182012002077
更新日期:2013-04-01 00:00:00
abstract::Trials were carried out to study the humoral immune response of blackflies to filariae following infection using the intrathoracic injection technique. An induced 66 kDa protein was abundant in the haemolymph of the European species Simulium ornatum following infection with bovine Onchocerca lienalis. This protein was...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000076538
更新日期:1994-12-01 00:00:00
abstract::A 186 bp Echinococcus granulosus-specific repetitive element, TREg, was used to assess genetic variation between strains. In G7 genotype (pig strain) it has the characteristics of a satellite DNA element with a copy number of 23000 per haploid genome. Analysis, by sequencing of TREg monomers, showed a great degree of ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182001008575
更新日期:2001-10-01 00:00:00
abstract::Changes in the cardiac beta-adrenergic system in early stages of Trypanosoma cruzi infection have been described. Here, we studied an early (135 days post-infection-p.i.) and a late stage (365 days p.i.) of the cardiac chronic form of the experimental infection (Tulahuen or SGO-Z12 strains), determining plasma epineph...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182009006337
更新日期:2009-07-01 00:00:00
abstract::The 'Muguga cocktail' live vaccine, delivered by an infection and treatment protocol, has been widely deployed in Eastern, Central and Southern Africa to protect cattle against East Coast fever, caused by Theileria parva. The vaccine contains 3 component stocks (Muguga, Serengeti-transformed and Kiambu 5). In a previo...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182007002557
更新日期:2007-08-01 00:00:00