Abstract:
:The current study aimed to detect the complement-binding proteins in the excretory-secretory (ES) products of adult filarial parasite Setaria equina (SeqES). Tests for complement activation pathways (CH50 and APH50 ) in normal human serum (NHS) after incubation with SeqES were performed. Quantitative detection of complement activation products like C3d and sC5b-9 by ELISA in inulin-activated NHS before and after addition of SeqES was estimated. Immunoblotting for 1D and 2D electrophoresed SeqES were performed for detection of C9-binding protein. MALDI mass sequencing and multiple sequence alignment were performed for identification of the protein. The results showed an inhibitory effect of SeqES for complement activation pathways. This was confirmed by an obvious reduction in C3d and sC5b-9 in inulin-activated NHS. Immunoblotting showed the reaction of a protein at 21 kDa with human C9. The latter protein was identified as OV-16 based on MALDI mass sequencing and multiple sequence alignment. In conclusion, S equina OV-16 is the complement regulatory protein by its ability to bind C9 and inhibit the classical and alternative pathways of complement activation. This protein can be used as a target for therapeutic treatment or as an anti-inflammatory agent in human diseases.
journal_name
Parasite Immunoljournal_title
Parasite immunologyauthors
Abdel-Latif Mdoi
10.1111/pim.12686subject
Has Abstractpub_date
2020-02-01 00:00:00pages
e12686issue
2eissn
0141-9838issn
1365-3024journal_volume
42pub_type
杂志文章abstract::Antibody isotype and epitope specificities were examined in sheep immunized with EG95, a protective recombinant vaccine against hydatid disease. All sheep immunized with EG95 as a fusion protein with glutathione S-transferase (GST) produced prominent IgG antibodies against the EG95 portion of the protein. Linear, anti...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.1998.00176.x
更新日期:1998-11-01 00:00:00
abstract::Toxoplasma gondii-specific murine CD4+ T cell clone 3Tx9 belongs to the Th1 subtype by virtue of secreting high levels of interleukin(IL)-2, interferon-gamma and tumor necrosis factor without producing IL4 and IL10. To characterize the clonal antigen, Toxoplasma lysate-was separated by SDS-PAGE and probed in T cell bl...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.1997.d01-201.x
更新日期:1997-05-01 00:00:00
abstract::Cyclophosphamide (Cy) is known to produce a marked eosinophilia in mice after antigen challenge. In this study, we studied the effect of Cy on eosinophilia in helminthic infection. Peripheral blood eosinophils were counted in SJL mice following a large dose of Cy injection, infection with Toxocara canis, and both Cy i...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1985.tb00074.x
更新日期:1985-05-01 00:00:00
abstract::Studies in animal models suggest that protection against malaria induced by intradermal (ID) administration of sporozoites is less effective compared to intravenous injection (IV). We investigated in a murine model the protective efficacy and immune responses after ID or IV immunization of sporozoites. Mice were immun...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12000.x
更新日期:2012-12-01 00:00:00
abstract::Onchocerca volvulus and the human immunodeficiency virus (HIV) are two immunocompromising infectious agents of major public health concern in Uganda. To examine the effect of coinfection with O. volvulus and HIV on cellular immune responses, lymphocyte proliferative responses and cytokine production of peripheral bloo...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.1998.00170.x
更新日期:1998-09-01 00:00:00
abstract::Trichuris muris is an intestinal nematode that invades the colonic epithelium triggering a mucosal inflammation. Vitamin A and its active metabolite retinoic acid are strongly linked with the modulation of gut immune responses. Here, we describe the temporal changes in the expression of aldehyde dehydrogenase (ALDH) e...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12032
更新日期:2013-07-01 00:00:00
abstract::SUMMARY Previous experiments have shown that genetic resistance to infection by Teladorsagia circumcincta in sheep can be measured by the level of IgA in gastric mucus, jointly with other parameters. The aim of this study has been to observe the influence of IgA on adult worms. The experiment was carried out with Chur...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.2005.00769.x
更新日期:2005-06-01 00:00:00
abstract::Mice infected with lethal P. berghei or P. yoelii malaria develop anti-lymphocyte autoantibodies less than a week after infection. The autoantibodies are IgM, T-dependent and cytotoxic to a subpopulation of non-T lymphocytes at 37 degrees C in the presence of mouse or guinea-pig complement. Non-lethal P. yoelii and P....
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1983.tb00742.x
更新日期:1983-05-01 00:00:00
abstract::The caecal-dwelling nematode Trichuris muris provides a natural model of human whipworm infection. Resistance to T. muris is dependent on a host Th2 response, and CD4+Th2 cells migrate to the gut-associated lymphoid tissue (GALT) to elicit parasite expulsion. Thus, CD4+T cells infiltrate the caecal lamina propria duri...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.2007.01017.x
更新日期:2008-03-01 00:00:00
abstract::We describe an ELISA for trophozoite-specific IgA in the intestinal secretions of mice infected with Giardia muris. Using this method, trophozoite-specific IgA was demonstrated in intestinal secretions of Giardia-infected immunocompetent BALB/c mice. Such antibody was undetectable in the intestinal secretions of Giard...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1988.tb00257.x
更新日期:1988-11-01 00:00:00
abstract::A recent working group convened by the World Health Organization recommended that time to first or only episode of clinical malaria should be used to evaluate vaccine efficacy in phase III trials. However, calculating vaccine efficacy based on this endpoint misses important aspects of malaria disease and transmission....
journal_title:Parasite immunology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-3024.2009.01144.x
更新日期:2009-09-01 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::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::The antigenicity of the biosynthetically labelled somatic and excretory/secretory proteins of adult Fasciola hepatica was investigated over 20 weeks of an infection with F. hepatica in sheep. The antibody response was initially detected by ELISA 2 weeks after infection, and was sustained at this level for the remainde...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1991.tb00267.x
更新日期:1991-01-01 00:00:00
abstract::Culex pipiens and Aedes aegypti mosquitoes were fed on C3H/HeJ mice and systemic cytokine production was quantified from stimulated lymphocytes harvested four to ten days after feeding. Mosquito feeding on C3H/HeJ mice significantly down regulated IFN gamma production seven to ten days post feeding by Cx. pipiens and ...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.1999.00199.x
更新日期:1999-01-01 00:00:00
abstract::CD4(+) T cells play a critical role in determining the disease outcome in murine cutaneous leishmaniasis, and selective usage of T-cell receptor (TCR) is implied in promoting Leishmania major infection. However, little information is available on TCR usage in Leishmania-specific, IFN-γ-producing CD4(+) T cells. In thi...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.2010.01268.x
更新日期:2011-03-01 00:00:00
abstract::TSOL18 is a recombinant protein that has been shown in repeated experimental trials to be capable of protecting pigs against challenge infection with the cestode parasite Taenia solium. Antibodies raised by the vaccine are capable of killing the parasite in an in vitro culture and it is believed that antibody and comp...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.2009.01197.x
更新日期:2010-06-01 00:00:00
abstract::Low- and high-dose infections with the murine large intestinal nematode Trichuris muris are associated with induction of adaptive Th1 and Th2 responses, respectively, in mesenteric lymph nodes (MLN). Classical dendritic cells (cDC) accumulate in the large intestinal mucosa and MLN upon T. muris infection, yet their ro...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12458
更新日期:2017-10-01 00:00:00
abstract:AIMS:Industrial growth has increased the exposure to endocrine disruptor compounds (EDCs) in all organisms. Bisphenol A (BPA), an EDC, has been demonstrated to be involved in the susceptibility to parasite infections. However, few studies have analysed this connection in more depth. The aim of this study was to determi...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12733
更新日期:2020-09-01 00:00:00
abstract::Immunization with naked DNA represents an attractive strategy for development of vaccines against a variety of infections including those caused by protozoan parasites. Recently, we have described that immunization with a plasmid containing the trans-sialidase (TS) gene induced protective immunity against Trypanosoma ...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.1999.00201.x
更新日期:1999-02-01 00:00:00
abstract::The role of MHC class II in the presentation of Heligmosomoides polygyrus antigens has been investigated, using a number of T cell hybridomas produced in A and E positive and negative mice. By using fixed and irradiated antigen presenting cells (APC), further evidence has emerged, to support earlier data, that there c...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1996.tb01028.x
更新日期:1996-09-01 00:00:00
abstract::Resistance to S. mansoni cercarial challenge, induced by prior infection of rats with cercariae, is analysed by substitution of alternatives to the primary cercarial exposure. Intravenous injections of either live or killed 4-week stage worms have been examined, utilizing two different routes of injection, one or two ...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1984.tb00790.x
更新日期:1984-03-01 00:00:00
abstract::Chagas' disease or American trypanosomiasis due to Trypanosoma cruzi has existed at least since the time of the Inca empire and contributes significantly to cardiovascular morbidity and mortality in several countries of this continent. Due to the fundamental role of human class II molecules polymorphic residues in the...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:
更新日期:1998-04-01 00:00:00
abstract::Use of the pig as an animal model in schistosomiasis research is increasing, but knowledge of the porcine immune response to schistosome infection is still very limited. We investigated the immunohistology of different maturation stages of the Schistosoma japonicum egg granuloma in pigs. Liver sections from pigs exper...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1046/j.1365-3024.2002.00448.x
更新日期:2002-03-01 00:00:00
abstract::Many studies on the role of merozoite surface protein 3 (MSP3) in immunity against malaria have focused on a conserved section of MSP3. New evidence suggests that polymorphic sequences within MSP3 are under immune selection. We report a detailed analysis of naturally-acquired antibodies to allele-specific and conserve...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.2007.00951.x
更新日期:2007-08-01 00:00:00
abstract::Immune responses of 97 Gambian women and their neonates were studied. New methods distinguished between active and previous placental malaria, were used to examine relationships between maternal malaria and neonatal immune responses. Many placentas (61%) had active or previous malarial infection. Maternal and cord mal...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3024.1995.tb00960.x
更新日期:1995-01-01 00:00:00
abstract::Chronic Chagas cardiomyopathy (CCC) is responsible for the disease's greater morbidity and poor prognosis. Although understanding the pathophysiology of CCC and the fundamentals of its clinical management derives from research related to other cardiomyopathies, there are peculiarities that distinguish CCC from the oth...
journal_title:Parasite immunology
pub_type: 杂志文章,评审
doi:10.1111/pim.12663
更新日期:2019-10-01 00:00:00
abstract::The purpose of this study was to monitor local cytokine responses to Dictyocaulus viviparus in calves during primary infection and re-infection. Bronchoalveolar lavage fluid (BALF) was collected weekly from experimentally infected calves and interleukin-2 (IL-2), IL-4, IL-5, IL-10 and IFN-γ mRNA expression was quantif...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12083
更新日期:2014-02-01 00:00:00
abstract::The C57BL/6 mouse strain is resistant to Leishmania (L.) major infection and, unlike susceptible BALB/c, develops small self-healing cutaneous lesions. The specific antibody responses of C57BL/6 and BALB/c mice were previously characterized by the predominance of IgG2a ('resistant' isotype associated with Th1) and IgG...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12223
更新日期:2015-10-01 00:00:00
abstract::Plasmodium falciparum-specific antibodies tend to be short-lived, but their cognate memory B cells (MBCs) circulate in the peripheral blood of exposed subjects for several months or years after the last infection. However, the time course of antigen-specific antibodies and B-cell responses to the relatively neglected ...
journal_title:Parasite immunology
pub_type: 杂志文章
doi:10.1111/pim.12662
更新日期:2019-09-01 00:00:00