Abstract:
:We have investigated whether a protective immune response occurred in mice infected with a virulent cloned strain of Plasmodium chabaudi. Animals inoculated intravenously with 10(7) parasitized erythrocytes (PE) showed an exponentially increasing parasitaemia and died by day 6 of the infection, presenting a pronounced anaemia. Smaller inocula produced a longer pre-patent period but did not change the lethal course of infection, since mice injected with 100 parasites died on day 12. When anaemia was compensated for by red blood cell (RBC) transfusion, infected mice recovered and thereafter exhibited a strong immunity, comparable to that of mice immunized by a drug-controlled infection. The immune response was P. chabaudi specific, as the mice were fully susceptible to a challenge by P. yoelii. Three transfusions of 5 x 10(9) RBC per mouse at 2-day intervals were necessary before all the animals were able to control the infection. Transfusion of a larger number of RBC resulted in a lower anaemia and a delay in reticulocytaemia but, paradoxically, the expression of the immune response was delayed. Three transfusions of 1.2 x 10(10) RBC enabled three out of eight mice to survive the infection, while six transfusions enabled all the mice to survive. The data suggest that parasitized immature RBC could play an important role in triggering the protective immune response.
journal_name
Parasite Immunoljournal_title
Parasite immunologyauthors
Falanga PB,Pereira da Silva Ldoi
10.1111/j.1365-3024.1989.tb00924.xsubject
Has Abstractpub_date
1989-11-01 00:00:00pages
603-13issue
6eissn
0141-9838issn
1365-3024journal_volume
11pub_type
杂志文章abstract::Groups of five dogs were vaccinated against Babesia canis using soluble parasite (SPA) antigens from in vitro cultures. Although vaccination did not significantly alter peripheral parasitaemia upon challenge, protected animals had lower levels of SPA in the plasma after a challenge infection. The severity of anaemia c...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.1996.d01-1.x
更新日期:1996-01-01 00:00:00
abstract::Immunity to Schistosoma mansoni in the mouse was induced by vaccination with adult worm surface membrane (mb-S). Of several adjuvants tested, including Freund's, BCG and alum, 50 micrograms of saponin per mouse given subcutaneously with the antigen was the easiest to administer, and gave consistent protection, approac...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1989.tb00669.x
更新日期:1989-07-01 00:00:00
abstract::Hookworms are one of the most prevalent parasites of humans in developing countries, but we know relatively little about the immune response generated to hookworm infection. This can be attributed to a lack of permissive animal models and a relatively small research community compared with those of the more high-profi...
journal_title:Parasite immunology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-3024.2010.01224.x
更新日期:2010-08-01 00:00:00
abstract:BACKGROUND:Fasciola hepatica causes economically important disease in livestock worldwide. The relevance of this parasitic infection extends beyond its direct consequences due to its immunoregulatory properties. OBJECTIVES:Given the importance of the T helper 1 (Th1) immune response in controlling infections with Myco...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12779
更新日期:2020-11-01 00:00:00
abstract::Serum antibody responses of mice exposed to Philippine isolates of Schistosoma japonicum have been analysed by immunoprecipitation of exogenously radiolabelled antigens extracted from adult worms. Attention was focused on labelled protein antigens differentially recognized by sera of mice that differ genetically in th...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1985.tb00067.x
更新日期:1985-03-01 00:00:00
abstract::Soluble extracts from salivarian trypanosomes (Trypanosoma brucei brucei, T. evansi and T. congolense) were shown to be capable of inducing murine tumour necrosis factor (mTNF) secretion, both in vivo and in vitro, whereas the soluble extract of an intracellular trypanosome (T. cruzi) failed to do so. Furthermore, the...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1993.tb00577.x
更新日期:1993-11-01 00:00:00
abstract::The course of primary infections with Nippostrongylus brasiliensis was followed in nude (CBH/R nu/nu) and heterozygote (CBH/R nu/+) rats. In both nude and heterozygote rats peak egg production by N. brasiliensis occurred on days 7 and 8 post-infection. However, whereas in heterozygote rats egg production declined rapi...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1991.tb00553.x
更新日期:1991-11-01 00:00:00
abstract::Sheep were sensitized by weekly infections with Teladorsagia circumcincta over a 9-week period. After a 12-week rest, sheep were divided into four groups and killed without challenge or 3, 5 and 10 days post challenge (DPC) with 50000 L3. Recovery of challenge larvae from abomasal scrapings was highest at 3 DPC while ...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.2003.00646.x
更新日期:2003-07-01 00:00:00
abstract::The pathogenesis of the tissue lesions observed in American trypanosomiasis (Chagas' disease) seems to depend on a variety of mechanisms. The present study was dedicated to the investigation of the evolution of muscle lesions and its relationship with immunological and parasitological parameters. Mice were infected i....
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1985.tb00091.x
更新日期:1985-09-01 00:00:00
abstract::The incidence of both type 1 (T1D) and type 2 diabetes (T2D) is drastically increasing, and it is predicted that the global prevalence of diabetes will reach almost 600 million cases by 2035. Even though the pathogenesis of both types of diabetes is distinct, the immune system is actively involved in both forms of the...
journal_title:Parasite immunology
pub_type: 杂志文章,评审
doi:10.1111/pim.12401
更新日期:2017-05-01 00:00:00
abstract::E6020 is a synthetic agonist of Toll-like receptor-4 (TLR4). The purpose of this study was to evaluate the effect of different doses of E6020-SE on Trypanosoma cruzi-specific immune responses and its ability to confer protection against acute lethal infection in mice. Forty female BALB/c were infected with 500 trypoma...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12769
更新日期:2020-10-01 00:00:00
abstract::A surface enriched fraction was prepared from adults of Onchocerca volvulus by brief extraction of entire worms with detergent. This was then gel filtered to yield a low molecular weight fraction which functioned specifically in ELISA analysis. An identical result was also obtained when the related cattle parasite, O....
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1987.tb00487.x
更新日期:1987-01-01 00:00:00
abstract::The immunological basis of resistance to Brugia pahangi infection in rats was studied. Infections were investigated in athymic rnu/rnu rats and in rats treated with the immuno-suppressive agents cyclosporin A (CsA) or cyclophosphamide (Cy). The recovery of adult worms in normal rats was 1-2% in comparison to 12.2% rec...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1992.tb00012.x
更新日期:1992-07-01 00:00:00
abstract::The in vitro binding serum complement (C) components to Schistosoma mansoni worms was studied. By exposing frozen sections of adult male and female parasites to normal human serum, binding of both classical and alternative pathway C components was observed. By immunofluorescence (IFL) microscopy selective binding of C...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1983.tb00736.x
更新日期:1983-03-01 00:00:00
abstract::We have tested the hypothesis that activation of T cells by exposure to malaria antigens facilitates both de novo HIV infection and viral reactivation and replication. PBMC from malaria-naive HIV-uninfected European donors could be productively infected with HIV following in vitro stimulation with a lysate of Plasmodi...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.0141-9838.2004.00701.x
更新日期:2004-05-01 00:00:00
abstract::A 17 kD protein of Necator americanus was isolated by SDS-PAGE and used to raise monospecific antisera in rabbits. ELISA and Western blotting against a range of parasite extracts demonstrated the species specificity of this protein. It is expressed at all stages of the life-cycle, appears to be accumulated through the...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1990.tb00953.x
更新日期:1990-05-01 00:00:00
abstract::Toxoplasma gondii is a worldwide protozoan parasite which causes severe disease in congenitally infected children and in immunocompromised patients. Besides the well-defined cytoplasmic and membrane antigens of tachyzoites, we felt that excreted/secreted antigens could play a major role in the immune response. We firs...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1988.tb00242.x
更新日期:1988-09-01 00:00:00
abstract::Opisthorchis viverrini infection causes opisthorchiasis and is a risk factor for cholangiocarcinoma via chronic inflammation. To investigate the mechanism of O. viverrini -induced liver disease, we applied a proteomic approach to examine alterations in hepatic protein levels in O. viverrini -infected hamsters. Two-dim...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.2009.01189.x
更新日期:2010-05-01 00:00:00
abstract::Helper T cell cytokine and antibody responses were investigated in mice after infection with Babesia microti (King strain). Infection of CBA mice with 106 parasitized erythrocytes resulted in the development of a transitory high parasitaemia which peaked 14 days post infection (DPI), and was resolved at 24 DPI. Th1 re...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.2000.00279.x
更新日期:2000-02-01 00:00:00
abstract::A whole-killed malaria blood-stage vaccine (WKV) is promising in reducing the morbidity and mortality of malaria patients, but its efficacy needs to be improved. We found that the antimalarial drug chloroquine could augment the protective efficacy of the WKV of Plasmodium yoelii. The direct antimalarial effect of chlo...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12682
更新日期:2020-01-01 00:00:00
abstract::Malaria parasites have a complex, multistage life cycle and there is a widely held view that each stage displays a distinct set of antigens presented to the immune system. Yet, molecular analysis of malaria parasites suggests that many putative antigenic targets are shared amongst the different stages. The specificiti...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12434
更新日期:2017-07-01 00:00:00
abstract::We compared the antigenicity of p126 Plasmodium falciparum peptides with predicted antigenic regions identified using the methods described by Garnier et al. (1978) and Chou & Fasman (1974). For this purpose nine different P. falciparum peptides were synthesized in accordance with the deduced amino acid sequence of th...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.1996.d01-62.x
更新日期:1996-03-01 00:00:00
abstract::As an orally acquired pathogen, the immune response to Toxoplasma gondii unfolds in the small intestinal mucosa. There, an array of regulatory and effector immune cells are elicited to combat the parasite through secretion of inflammatory mediators, normally resulting in host protection and pathogen control. Recent st...
journal_title:Parasite immunology
pub_type: 杂志文章,评审
doi:10.1111/pim.12164
更新日期:2015-03-01 00:00:00
abstract::To determine the role of T cells and mast cells in intestinal pathology and immune expulsion of intestinal nematodes, worm burdens, goblet cell responses and villus structures were analysed in T- and B-cell-deficient severe combined immunodeficiency (SCID) mice, athymic nu/nu mice and mast cell deficient W/W(v) mice a...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.2009.01123.x
更新日期:2009-08-01 00:00:00
abstract::The carrier effect, using TNP-labelled schistosomula was used to measure the helper T-cell activity against the schistosomula surface in CBA mice exposed to 30 cercariae of Schistosoma mansoni. After infection the helper T-cell activity reached a peak in 8--10 days, but by 6 weeks it had declined to background levels....
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1981.tb00401.x
更新日期:1981-10-01 00:00:00
abstract::In schistosomiasis endemic areas, intensities of reinfection after treatment are greater amongst young children than amongst adults, and high levels of parasite-specific IgE are associated with resistance to reinfection in an age-dependent manner. Previously we have reported that, in Western blots, a 22 kDa band was r...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.1997.d01-186.x
更新日期:1997-02-01 00:00:00
abstract::We have characterized various anti-schistosomular surface MoAbs previously shown to partially block in-vitro killing of schistosomula by human sera and eosinophils (Dunne et al. 1987). Immunodiffusion analysis showed that four IgM and one IgG3 MoAbs recognized periodate sensitive epitopes on the same molecular species...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1988.tb00211.x
更新日期:1988-03-01 00:00:00
abstract::Infective forms of Trypanosoma cruzi, the parasite that causes Chagas' disease, express on their surface an enzyme denominated trans-sialidase (TS). The present study was designed to evaluate the naturally acquired immune responses to a bacterial recombinant protein representing the catalytic domain of TS in chronical...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.2000.00260.x
更新日期:2000-01-01 00:00:00
abstract::In order to gain insights into the immune response in onchocerciasis during early infection, laboratory-reared calves were infected with 1000 Onchocerca lienalis infective larvae and examined serologically over a period of 508 days. Levels of serum antibodies measured by ELISA against adult worm extract revealed a mul...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1995.tb00907.x
更新日期:1995-08-01 00:00:00
abstract::To investigate whether soluble Plasmodium falciparum antigens possess endotoxin-like properties, the interaction of Limulus amoebocyte lysate (LAL) with defined soluble antigens from Plasmodium falciparum was studied by various crossed immunoelectrophoretic methods and immunoblotting. The soluble P. falciparum antigen...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1988.tb00247.x
更新日期:1988-11-01 00:00:00