Toll-like receptor 4 signalling pathway activation in a rat model of Acanthamoeba Keratitis.

Abstract:

:The pathogenesis of Acanthamoeba keratitis (AK) is complicated. In our previous studies, TLR4 was found involved in the process of infection by Acanthamoeba in human corneal cells. The purpose of this study was to investigate the role of Toll-like receptor 4 (TLR4) signalling pathway in Wistar rats challenged with Acanthamoeba. The rat model of AK was established. Corneas were collected and analysed by real-time PCR to assess the mRNA levels of TLR 2, 4, myeloid differentiation protein (MyD)88, nuclear factor (NF)-κB, extracellular signal-regulated kinase (ERK), interleukin (IL)-8, tumour necrosis factor (TNF)-α and interferon (IFN) -β. Immunocytochemistry and Western blot were conducted to examine the proteins of TLR2, TLR4, p-Erk1/2 and p-IκB. Specific inhibitors PDTC and U0126 were used to pretreat the animals to determine the exact receptor and signalling pathway involved in pathogenesis. Expressions of TLR4, MyD88, all three cytokines, NF-κB, p-IκB and p-Erk1/2 were increased in Acanthamoeba-treated rat corneas. PDTC inhibited the production of IL-8 and TNF-α, while U0126 inhibited the synthesis of IFN-β. TLR4 was involved in sensing the challenge of Acanthamoeba and inducing production of cytokines through TLR4-NF-κB and TLR4-Erk1/2 pathways in corneas of Wistar rats.

journal_name

Parasite Immunol

journal_title

Parasite immunology

authors

Ren MY,Wu XY

doi

10.1111/j.1365-3024.2010.01247.x

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

25-33

issue

1

eissn

0141-9838

issn

1365-3024

journal_volume

33

pub_type

杂志文章
  • Production of tumour necrosis factor during murine cutaneous leishmaniasis.

    abstract::We have assessed the role of tumour necrosis factor-alpha (TNF) during cutaneous leishmaniasis and demonstrated that significant levels of TNF were released by spleen cells from infected mice after in vitro restimulation with Leishmania major promastigotes. Spleen cells from both genetically resistant and genetically ...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.1990.tb00983.x

    authors: Moll H,Binöder K,Bogdan C,Solbach W,Röllinghoff M

    更新日期:1990-09-01 00:00:00

  • The role of microRNAs in Anopheles biology-an emerging research field.

    abstract::In the last years, microRNAs (miRNAs) have been established as important post-transcriptional regulators of critical physiological processes in animals and plants. Here, we summarize what is known about miRNA biosynthesis, expression and function in the malaria vector mosquito Anopheles gambiae with a particular empha...

    journal_title:Parasite immunology

    pub_type: 杂志文章,评审

    doi:10.1111/pim.12405

    authors: Lampe L,Levashina EA

    更新日期:2017-02-01 00:00:00

  • Screening for immunomodulatory proteins of the intestinal parasitic nematode Heligmosomoides polygyrus.

    abstract::Parasitic nematodes are constantly exposed to the immune effector mechanisms of their hosts. One strategy of the worms to cope with these defence reactions is the secretion of modulatory proteins that down-regulate cell-mediated immune responses. We analysed the proliferation of mesenteric lymph node cells of mice inf...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.2006.00891.x

    authors: Rzepecka J,Lucius R,Doligalska M,Beck S,Rausch S,Hartmann S

    更新日期:2006-09-01 00:00:00

  • Brugia pahangi infections in immune-compromised rats demonstrate that separate mechanisms control adult worm and microfilarial numbers.

    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

    authors: Lawrence R,Denham DA

    更新日期:1992-07-01 00:00:00

  • Biochemical characterization and localization of Fasciola hepatica 26-28 kDa diagnostic coproantigen.

    abstract::We have previously reported the usefulness of a 26-28 kDa coproantigen of Fasciola hepatica for diagnosis of infection. In this study, the 26-28 kDa coproantigen was biochemically characterized with the aid of monoclonal antibodies (MoAb) in an effort to better understand the biology of the antigen. Differential stain...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1046/j.1365-3024.1999.00191.x

    authors: Abdel-Rahman S,O'Reilly KL,Malone JB

    更新日期:1999-06-01 00:00:00

  • Immune response in goats vaccinated with thiol-binding proteins from Haemonchus contortus.

    abstract::The experimental protocol of immunization tested here confirms its protective effect against Haemonchus contortus in goats. This protection translated into a 65.5% mean reduction in adult worm burden after a homologous challenge, and a significant decrease (73.2%) in cumulative faecal egg counts (FECs). These parasito...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/pim.12569

    authors: Molina JM,Hernández YI,Martín S,Ferrer O,Rodríguez F,Ruiz A

    更新日期:2018-09-01 00:00:00

  • Identification of HLA-A2 restricted CD8(+) T-lymphocyte responses to Plasmodium vivax circumsporozoite protein in individuals naturally exposed to malaria.

    abstract::Specific CD8(-) T-lymphocyte (CTL) activity against Plasmodium pre-erythrocytic stages (P-ES) derived antigens is considered one of the most important mechanisms for malaria protection. Plasmodium vivax is the second most prevalent human malaria parasite species distributed worldwide. Although several CTL epitopes hav...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1046/j.1365-3024.2002.00449.x

    authors: Arévalo-Herrera M,Valencia AZ,Vergara J,Bonelo A,Fleischhauer K,González JM,Restrepo JC,López JA,Valmori D,Corradin G,Herrera S

    更新日期:2002-03-01 00:00:00

  • Mechanisms of leucocyte recruitment to the inflamed large intestine: redundancy in integrin and addressin usage.

    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

    authors: Bell LV,Else KJ

    更新日期:2008-03-01 00:00:00

  • Different serum cytokine levels in chronic vs. acute Anisakis simplex sensitization-associated urticaria.

    abstract::The knowledge on immune mechanisms of chronic urticaria (CU) at the cytokine level is widely scarce. We compared pro- and anti-inflammatory as well as Th1- and Th2-associated serum cytokine levels in two phenotypes of CU: associated with (CU+) and without (CU⁻) sensitization against Anisakis simplex, a ubiquitous fish...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.2011.01282.x

    authors: Daschner A,Rodero M,DE Frutos C,Valls A,Vega F,Blanco C,Cuéllar C

    更新日期:2011-06-01 00:00:00

  • Mannose receptor (MR) and Toll-like receptor 2 (TLR2) influence phagosome maturation during Leishmania infection.

    abstract::Leishmania enter macrophages through receptor-mediated phagocytosis and survive the harsh environment of a phagolysosome. Here, we investigated the interaction between mannose receptor (MR), Toll-like receptor 2 (TLR2), and Leishmania, and the subsequent impact on phagosome maturation. Leishmania parasites are able to...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/pim.12521

    authors: Polando RE,Jones BC,Ricardo C,Whitcomb J,Ballhorn W,McDowell MA

    更新日期:2018-04-01 00:00:00

  • Sex-influenced response in the pathogenesis of cutaneous leishmaniasis in mice.

    abstract::Male B10 X 129 (10M) ScSn mice were relatively resistant to cutaneous leishmaniasis, while females frequently developed non-healing expanding ulcers, leading to loss of infected extremities, metastasis to distal skin sites, and in some animals, death. Anti-leishmanial antibody titers were higher, and delayed-type hype...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.1986.tb00831.x

    authors: Giannini MS

    更新日期:1986-01-01 00:00:00

  • Antibody responses in onchocerciasis as a function of age and infection intensity.

    abstract::Onchocerciasis is caused by the filarial nematode Onchocerca volvulus and is a major public health problem in West and Central Africa. With only partial and long-term treatment currently available, there is a need to develop a suitable vaccine. We analysed the antibody response to infective L3 larvae because this stag...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1046/j.1365-3024.2001.00408.x

    authors: Faulkner H,Gardon J,Kamgno J,Enyong P,Boussinesq M,Bradley JE

    更新日期:2001-09-01 00:00:00

  • Vaccination of goats against the trematode Schistosoma bovis with a recombinant homologous schistosome-derived glutathione S-transferase.

    abstract::We assayed the vaccine potentialities of a recombinant S. bovis-derived glutathione S-transferase (rSb28GST), member of a molecular family already shown to have protective capacities in the S. mansoni and S. japonicum models. Injection of the rSb28GST in Freund's Complete Adjuvant resulted in good specific IgG respons...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.1994.tb00367.x

    authors: Boulanger D,Trottein F,Mauny F,Bremond P,Couret D,Pierce RJ,Kadri S,Godin C,Sellin E,Lecocq JP

    更新日期:1994-08-01 00:00:00

  • Antilymphocyte autoantibody in lethal mouse malaria and its suppression by non-lethal malaria.

    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

    authors: de Souza JB,Playfair JH

    更新日期:1983-05-01 00:00:00

  • Free radical generation and the course of primary infection with Nippostrongylus brasiliensis in congenitally athymic (nude) rats.

    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

    authors: Smith NC,Ovington KS,Bryant C

    更新日期:1991-11-01 00:00:00

  • The identification of a species-specific antigen from Necator americanus.

    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

    authors: Pritchard DI,McKean PG,Rogan MT,Schad GA

    更新日期:1990-05-01 00:00:00

  • Neutralization of the activity of a Fasciola hepatica cathepsin L proteinase by anti-cathepsin L antibodies.

    abstract::Fasciola hepatica secretes a cathepsin L proteinase that is suggested to play an in vivo role in immunoprotection since the enzyme can cleave host immunoglobulin. In the present report, rabbit anti-cathepsin L IgG was shown to bind to the cathepsin L enzyme and inhibit its ability to cleave IgG molecules. Cathepsin L ...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.1994.tb00356.x

    authors: Smith AM,Carmona C,Dowd AJ,McGonigle S,Acosta D,Dalton JP

    更新日期:1994-06-01 00:00:00

  • Differential effects of Trypanosoma cruzi on the transcription of the p55IL-2R, c-fos, c-myc and CD69 genes in activated human lymphocytes.

    abstract::Mitogen-activated lymphocytes co-cultured with either purified Trypanosoma cruzi trypomastigotes or the filtrate of trypomastigote suspensions in culture medium manifest a significant decrease in their capacities to express p55 interleukin-2 receptor molecules (p55IL-2R) on their membrane and proliferate. In this stud...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.1995.tb00889.x

    authors: Kierszenbaum F,Majumder S,Mejia Lopez H,Sztein MB

    更新日期:1995-04-01 00:00:00

  • Bisphenol A induces protection through modulation of the immune response against the helminth parasite Taenia crassiceps.

    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

    authors: Nava-Castro KE,Togno-Peirce C,Palacios-Arreola MI,Del Rio-Araiza VH,Hernandez-Bello R,Morales Montor J

    更新日期:2020-09-01 00:00:00

  • Local immune responses in sensitized sheep following challenge infection with Teladorsagia circumcincta.

    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

    authors: Balic A,Bowles VM,Liu YS,Meeusen EN

    更新日期:2003-07-01 00:00:00

  • Identification of the complement 9-binding protein in Setaria equina excretory-secretory products.

    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 comp...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/pim.12686

    authors: Abdel-Latif M

    更新日期:2020-02-01 00:00:00

  • Codelivery of DNA vaccination encoding LeIF gene and IL-12 increases protection against Leishmania major infection in BALB/c mice.

    abstract::Previous studies have shown that Leishmania elongation initiation factor (LeIF) antigen causes a partial immunity against leishmaniasis. The antigen develops type I immunity by overexpression of inflammatory cytokines such as interleukin-12 (IL-12), IFN-γ and TNF-α. Therefore, We evaluated immune responses induced by ...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/pim.12310

    authors: Maspi N,Ghaffarifar F,Sharifi Z,Dalimi A

    更新日期:2016-04-01 00:00:00

  • Standardization of a technique for analysing the frequency of parasite-specific cytotoxic T lymphocyte precursors in cattle immunized with Theileria parva.

    abstract::A limiting dilution microculture system was optimized to quantify the frequency of Theileria parva-specific cytotoxic T lymphocyte precursors (CTLp) in peripheral blood mononuclear cells (PBMC) from immune cattle. Optimal results were obtained with responder cell input levels ranging from 2 x 10(4)/well to 6.25 x 10(2...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.1992.tb00457.x

    authors: Taracha EL,Goddeeris BM,Scott JR,Morrison WI

    更新日期:1992-03-01 00:00:00

  • Mechanisms of apoptosis in murine fibroblasts by two intracellular protozoan parasites, Toxoplasma gondii and Neospora caninum.

    abstract::Studies to clarify the mechanisms of apoptosis in host cells, A31 (BALB/3T3 clone A31 fibroblasts), caused by two intracellular protozoan parasites, Toxoplasma gondii and Neospora caninum, were carried out in an in vitro system. The viability of N. caninum-infected cells was significantly reduced following treatment w...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1046/j.1365-3024.2002.00476.x

    authors: Nishikawa Y,Makala L,Otsuka H,Mikami T,Nagasawa H

    更新日期:2002-07-01 00:00:00

  • Leishmania mexicana H-line attenuated under pressure of gentamicin, potentiates a Th1 response and control of cutaneous leishmaniasis in BALB/c mice.

    abstract::An attenuated line of Leishmania mexicana (the L. mexicana H-line) has been established by culturing in vitro under gentamicin pressure. BALB/c mice infected with the L. mexicana H-line developed a CD4(+)Th1-like response, indicated by the cytokine profile of their splenocytes stimulated by L. mexicana wild-type (WT) ...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.0141-9838.2004.00671.x

    authors: Daneshvar H,Hagan P,Phillips RS

    更新日期:2003-11-01 00:00:00

  • Frequency of specific CD8+ T cells for a promiscuous epitope derived from Trypanosoma cruzi KMP-11 protein in chagasic patients.

    abstract::The K1 peptide is a CD8(+)T cell HLA-A*0201-restricted epitope derived from the Trypanosoma cruzi KMP-11 protein. We have previously shown that this peptide induces IFN-gamma secretion by CD8(+)T cells. The aim of this study was to characterize the frequency of K1-specific CD8(+)T cells in chagasic patients. Nineteen ...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.2010.01206.x

    authors: Lasso P,Mesa D,Cuéllar A,Guzmán F,Bolaños N,Rosas F,Velasco V,Thomas Mdel C,Lopez MC,Gonzalez JM,Puerta CJ

    更新日期:2010-07-01 00:00:00

  • Induction of a marked eosinophilia by cyclophosphamide in Toxocara canis infected SJL mice.

    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

    authors: Sugane K,Oshima T

    更新日期:1985-05-01 00:00:00

  • Characterization of Neospora caninum iscom antigens using monoclonal antibodies.

    abstract::Neospora caninum is a cyst-forming coccidian parasite which in cattle can cause abortion and birth of feeble calves. For the serological diagnosis of neosporosis, antibodies directed to the parasite can be demonstrated by ELISA, utilizing N. caninum proteins incorporated into iscoms (immunostimulating complexes) as an...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1046/j.1365-3024.1998.00127.x

    authors: Björkman C,Hemphill A

    更新日期:1998-02-01 00:00:00

  • Characterization of excretory-secretory products of adult Dictyocaulus viviparus and the antibody response to them in infection and vaccination.

    abstract::In vitro released products of the adult stage of the bovine lungworm. Dictyocaulus viviparus, were characterized according to their SDS-PAGE profile, glycosylation pattern, in vitro synthesis and antigenicity in the context of infection and vaccination with irradiated larvae. Biosynthetic labelling experiments with 35...

    journal_title:Parasite immunology

    pub_type: 杂志文章

    doi:10.1111/j.1365-3024.1993.tb00596.x

    authors: Britton C,Canto GJ,Urquhart GM,Kennedy MW

    更新日期:1993-03-01 00:00:00

  • Apical membrane protein 1-specific antibody profile and temporal changes in peripheral blood B-cell populations in Plasmodium vivax malaria.

    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

    authors: Soares RR,Cunha CF,Ferraz-Nogueira R,Marins-Dos-Santos A,Rodrigues-da-Silva RN,da Silva Soares I,da Costa Lima-Junior J,Bertho AL,Ferreira MU,Scopel KKG

    更新日期:2019-09-01 00:00:00