Abstract:
:Various specific and non-specific environmental factors have been associated with the induction and/or exacerbation of disease activity in patients with Crohn's disease and ulcerative colitis. One such factor is the potential role of ingested ultrafine particles. In fact, based on a Western diet, recent data suggest that more than 10(12)ultrafine particles are ingested per person every day. These microparticles have been considered inert although they adsorb endogenous constituents of the intestinal lumen and are taken up by human intestinal lymphoid aggregates. Based on these observations, we determined whether one such dietary microparticle, titanium dioxide (TiO(2)), alters intestinal cell responsiveness to lipopolysaccharide (LPS) using colonic biopsy specimens from 28 patients with ulcerative colitis, 21 with Crohn's disease, and 36 healthy controls. These samples, as well as peripheral blood mononuclear cells when available, were incubated alone (control), or with either (a) LPS (1-2,000 ng/ml), (b) TiO(2)(5 microg/ml) or (c) LPS (1 ng/ml) adsorbed to TiO(2)(5 microg/ml). In each case, the levels of interleukin 1 (IL-1) produced in these assays were quantitated by bioassay and by ELISA. Interestingly, there was dramatic stimulation of peripheral blood mononuclear cells using the TiO(2)-LPS conjugate, with values 30-60-fold above controls and only minor stimulation with LPS or TiO(2)alone. In intestinal organ cultures there was no increase in IL-1 secretion when challenged with TiO(2)alone or with up to 2,000 ng/ml LPS. However, the TiO(2)-LPS conjugate produced a two-to-three-fold, significant increase in the intestinal secretion of IL-1. Our data demonstrate that ultrafine dietary particles are not immunologically inert and may be important adjuncts in overcoming normal gut cell hyporesponsiveness to endogenous luminal molecules. This may be particularly relevant to patients with inflammatory bowel disease where there is abnormal intestinal permeability.
journal_name
J Autoimmunjournal_title
Journal of autoimmunityauthors
Powell JJ,Harvey RS,Ashwood P,Wolstencroft R,Gershwin ME,Thompson RPdoi
10.1006/jaut.1999.0342subject
Has Abstractpub_date
2000-02-01 00:00:00pages
99-105issue
1eissn
0896-8411issn
1095-9157pii
S0896-8411(99)90342-6journal_volume
14pub_type
杂志文章abstract::The mechanism by which immune tolerance is breached in autoimmune disease is poorly understood. One possibility is that post-translational modification of self-antigens leads to peripheral recognition of neo-epitopes against which central and peripheral tolerance is inadequate. Accumulating evidence points to multiple...
journal_title:Journal of autoimmunity
pub_type: 杂志文章,评审
doi:10.1016/j.jaut.2017.08.001
更新日期:2017-11-01 00:00:00
abstract::IgA-, IgM- and IgG-containing immune complexes (CIC) were detected in 48, 19 and 12% of 52 patients with primary Sjögren's syndrome (SS), in 36, 38 and 56% of 45 patients with rheumatoid arthritis, and in 8, 5 and 3% of 40 normal controls. A high proportion of primary SS patients also had considerable amounts of serum...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/0896-8411(91)90016-6
更新日期:1991-02-01 00:00:00
abstract::The role of the innate immune system has been established in the initiation and perpetuation of inflammatory disease, but less attention has been paid to its role in the resolution of inflammation and return to homeostasis. Toll-like receptor (TLR) expression profiles were analysed in tissues with differing disease st...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2021.102597
更新日期:2021-01-22 00:00:00
abstract::Peripheral T cells can be polarized towards type 1 or type 2 cytokine immune responses during TCR engagement. Because T cell selection by peptide plus self-MHC in the thymus requires TCR engagement, we hypothesized that type 1 cytokines may polarize developing T cells. We cultured thymi from BBDR rats in adult thymus ...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/s0896-8411(02)00091-4
更新日期:2003-02-01 00:00:00
abstract::The interaction over time of genetic, epigenetic and environmental factors (i.e., autoimmune ecology) increases or decreases the liability an individual would have to develop an autoimmune disease (AD) depending on the misbalance between risk and protective effects. Pathogens have been the most common antecedent event...
journal_title:Journal of autoimmunity
pub_type: 杂志文章,评审
doi:10.1016/j.jaut.2019.06.012
更新日期:2019-09-01 00:00:00
abstract::It has been recently suggested that primary Sjögren's syndrome (SS) patients present with a variety of personality structure disturbances and psychiatric symptoms. To evaluate this finding further, we assessed hostility structure and psychiatric symptoms in 33 Sjögren's syndrome patients and compared the results with ...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/0896-8411(89)90180-7
更新日期:1989-08-01 00:00:00
abstract::We have studied the cellular expression and functional conservation of the human La autoantigen across species by introducing genes encoding human La antigen into cultured murine cell lines. In transfected murine fibroblasts and lymphoid cell lines human La was expressed as a predominantly nuclear antigen, with a typi...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1006/jaut.1993.1045
更新日期:1993-10-01 00:00:00
abstract::Beta(2)-glycoprotein I (beta(2)GPI) is known as a major autoantigen for antiphospholipid antibodies. Our recent data show that binding of beta(2)GPI to oxidized low-density lipoprotein (oxLDL) or to liposomes containing anionic phospholipid(s) may facilitate the presentation of beta(2)GPI's epitope by macrophages/dend...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2007.07.003
更新日期:2007-09-01 00:00:00
abstract::Despite a broad clinical spectrum, paraneoplastic enecephalomyelitis/sensory neuronopathy (PEM/SSN) is characterized by the presence of a common autoantibody, referred to as anti-Hu or type I anti-neuronal nuclear antibody (ANNA-1). The target of these antibodies is a family of four Hu antigens: three (Hel-N1, HuC, Hu...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1006/jaut.1999.0337
更新日期:1999-12-01 00:00:00
abstract::Dermatomyositis (DM) is an idiopathic inflammatory myopathy (IIM) characterized by an inflammatory infiltrate primarily affecting the skeletal muscle and skin. Most common and peculiar cutaneous lesions include Gottron's papules, Gottron's sign and heliotrope rash. Different DM subsets have been identified until now e...
journal_title:Journal of autoimmunity
pub_type: 杂志文章,评审
doi:10.1016/j.jaut.2013.11.005
更新日期:2014-02-01 00:00:00
abstract::It was previously shown that BALB/c mice were susceptible to experimental autoimmune encephalomyelitis induced by immunization with proteolipid protein (PLP). To determine the encephalitogenic epitopes of PLP in BALB/c mice, mice were immunized with successively smaller pools of 20-mer peptides spanning the PLP molecu...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1006/jaut.2002.0619
更新日期:2002-12-01 00:00:00
abstract::Neonatal lupus erythematosus (NLE) is associated with the transplacental passage of maternal anti-Ro and anti-La antibodies. In order to better determine the risk of delivery of a child with NLE, we examined the frequency of anti-Ro and anti-La antibody secreting cells in mothers of children with NLE and in mothers at...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1006/jaut.1993.1040
更新日期:1993-08-01 00:00:00
abstract::Proper T cell activation and function are regulated by the innate immune system, importantly through positive and negative costimulatory molecules in the B7 superfamily. Inducible costimulator (ICOS), the receptor for B7h (also known as B7RP-1), is expressed on T cells after T cell activation. Recently, using ICOS-def...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/s0896-8411(03)00119-7
更新日期:2003-11-01 00:00:00
abstract::To investigate a possible dysregulation of the autoantibody network in AIDS patients, the relative activity of representative natural antibodies was measured in serum IgG and IgM. These immunoglobulins were purified from two cohorts of 20 HIV-infected patients undergoing, or not, a triple combination therapy. A cohort...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1006/jaut.2001.0529
更新日期:2001-08-01 00:00:00
abstract::Nodding Syndrome (NS) is a fatal pediatric epilepsy of unknown etiology, accompanied by multiple neurological impairments, and associated with Onchocerca volvulus (Ov), malnutrition, war-induced trauma, and other insults. NS patients have neuroinflammation, and ~50% have cross-reactive Ov/Leiomodin-1 neurotoxic autoim...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2020.102462
更新日期:2020-08-01 00:00:00
abstract::A major concept in autoimmunity is that disruption of Foxp3(+) regulatory T cells (Tregs) predisposes to breach of tolerance. This is exemplified by the Foxp3-linked disorder termed IPEX (immunodysregulation, polyendocrinopathy, enteropathy, X-linked) which affects newborn children. There has been considerable clinica...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2013.08.010
更新日期:2014-05-01 00:00:00
abstract::Type 1 Diabetes (T1D) is an autoimmune disease characterized by the pancreatic infiltration of immune cells resulting in T cell-mediated destruction of the insulin-producing beta cells. The successes of the Non-Obese Diabetic (NOD) mouse model have come in multiple forms including identifying key genetic and environme...
journal_title:Journal of autoimmunity
pub_type: 杂志文章,评审
doi:10.1016/j.jaut.2015.08.019
更新日期:2016-01-01 00:00:00
abstract:OBJECTIVE:To identify potential causative markers involved in the development of early-onset myasthenia gravis (EOMG) in the MHC and non-MHC regions that may interact with the HLA-B*08:01 allele. METHODS:We analyzed 583 MG patients and identified 5 patients homozygous for the disease-associated ancestral haplotype 8.1...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2017.10.002
更新日期:2018-03-01 00:00:00
abstract::CD4(+) IFN-gamma-producing Th1 cells have long been associated with the pathogenesis of many organ-specific autoimmune diseases; however, the observation of disease in mice deficient in molecules involved in Th1 cell differentiation raised the possibility that other effector T cells were responsible for inducing autoi...
journal_title:Journal of autoimmunity
pub_type: 杂志文章,评审
doi:10.1016/j.jaut.2008.04.017
更新日期:2008-11-01 00:00:00
abstract::Epigenetic changes are of crucial importance in the etiopathogenesis of autoimmune liver diseases. Among these, there is limited agreement on the definitions and treatment of primary biliary cirrhosis (PBC) and autoimmune hepatitis (AIH) overlap syndromes, we evaluated a large series of consecutive patients with PBC (...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2012.10.004
更新日期:2013-03-01 00:00:00
abstract::The F1 progeny of the cross between SWR and NZB mice (SNF1) develop severe immune complex glomerulonephritis, similar to that seen in human SLE. An idiotypically-related family of nephritic antibodies (IdLNF1) has been shown to be important in the pathogenesis of autoimmune glomerulonephritis in these mice. Interestin...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1006/jaut.1994.1003
更新日期:1994-02-01 00:00:00
abstract::It has been known for many years that bacteria can induce autoimmune responses in humans resulting in serious disease. Recent work has shown that a number of bacteria that colonize human mucosal surfaces exclusively express antigens on their surfaces which are molecular mimics of glycosphingolipids found on human cell...
journal_title:Journal of autoimmunity
pub_type: 杂志文章,评审
doi:10.1006/jaut.2000.0477
更新日期:2001-05-01 00:00:00
abstract::The Foxp3(+)CD4(+) regulatory T-cell (Treg)-deficient Scurfy (Sf) mice rapidly develop severe inflammation in the skin and lungs with expanded Th subsets bearing increased expression of various chemokine/chemoattractant/retention receptor genes (CRG). Nine different double mutants were generated to elucidate their rol...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2012.02.001
更新日期:2012-06-01 00:00:00
abstract::Peptidomimetic compounds that bind to major histocompatibility complex class II molecules and are resistant to cathepsins can competitively inhibit the presentation of processed protein antigens. Therefore, compounds that bind to autoimmune disease-associated class II molecules are expected to compete with autoantigen...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2006.09.005
更新日期:2006-11-01 00:00:00
abstract::Further to define the epitopes of PDC-E2, the major autoantigen in primary biliary cirrhosis (PBC), we have developed and characterized five human monoclonal antibodies. These antibodies were derived by fusing a regional hepatic lymph node from a patient with PBC with the mouse human heterohybrid cell line F3B6. Previ...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/0896-8411(92)90187-u
更新日期:1992-12-01 00:00:00
abstract::Glutamic acid decarboxylase (GAD) has been shown to exist as two isoforms with molecular weights of 65 kD (GAD65) and 67 kD (GAD67) in the central nervous system as well as in several non-neuronal tissues, including the pancreatic islets. Recently, this enzyme has been proposed as a key beta-cell autoantigen in insuli...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1006/jaut.1996.0004
更新日期:1996-02-01 00:00:00
abstract::Idiopathic pulmonary fibrosis (IPF) is a progressive devastating, yet untreatable fibrotic disease of unknown origin. We investigated the contribution of the B-cell activating factor (BAFF), a TNF family member recently implicated in the regulation of pathogenic IL-17-producing cells in autoimmune diseases. The contri...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2014.08.003
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND/PURPOSE:Primary Sjögren's syndrome (SS) is a chronic autoimmune disease primarily involving the exocrine glands. The clinical picture of SS ranges from exocrinopathy to systemic disease affecting the lung, kidney, liver, skin, musculockeletal and nervous systems. The morbidity of SS is mainly determined by e...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2012.05.018
更新日期:2012-09-01 00:00:00
abstract::The effect of the immunosuppressive drug FK 506 on encephalomyelitis (EAE) in Lewis rats was studied. Treatment that began during EAE induction delayed EAE onset, but when the disease started it was chronic/progressive and of unusual severity and duration, leading to death in many animals. Treatment started after onse...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1006/jaut.1998.0205
更新日期:1998-08-01 00:00:00
abstract::Systemic lupus erythematosus (SLE) is a prototype autoimmune disease characterized by various immunological abnormalities, including dysregulated activation of T and B lymphocytes, which trigger autoantibody production and immune-complex deposition. E4BP4, also known as NFIL3, has emerged as a major transcription fact...
journal_title:Journal of autoimmunity
pub_type: 杂志文章
doi:10.1016/j.jaut.2013.01.004
更新日期:2013-03-01 00:00:00