Abstract:
:We have previously demonstrated that immune platelet destruction observed in an AIDS-free HIV-infected patient was associated with the presence of a cross-reactive antibody recognizing both HIV-glycoprotein (gp)120 and platelet gpIIIa (CD61). We have now investigated the presence of such antibodies in other HIV-infected patients, together with the molecular structure of the cross-reactive epitope. Platelet gpIIb/IIIa antibodies were characterized in sera from HIV-infected patients with immune thrombocytopenic purpura by means of an ELISA and a radio-immunoprecipitation procedure (RIP). The platelet antibodies were purified and tested for their ability to recognize HIV-gp. We also tried to characterize the antibody target epitope on HIV-gp120 using recombinant gp and synthetic peptides. IgG with anti-gpIIb/IIIa activity were detected, by means of an ELISA with purified gpIIb/IIIa, in 101/138 (73%) sera from HIV-infected patients with immune thrombocytopenic purpura. The platelet antibodies were purified from 23 sera by absorption/elution on purified immobilized platelet gpIIb/IIIa, and recognition of gpIIIa was confirmed in eight cases with a RIP. Furthermore, the presence of a cross-reactive antibody between HIV-gp120 and platelet gpIIIa was demonstrated in 18/18 patients (including the eight with a confirmed gpIIIa antibody) by the ability of the serum HIV-gp160/120 antibodies to bind to purified gpIIb/IIIa. The cross-reactive epitope was shown to be independent of the carbohydrate moieties of gp120, since deglycosylation of two recombinant (r)-gp120s did not abolish antibody binding. However, the antibody did not recognize synthetic gp120 peptides spanning 355 of the 516 amino acids of gp120, particularly the four regions exhibiting sequences of four or five consecutive amino acids that are identical between r-gp120 and gpIIIa. Our results thus support the hypothesis that the cross-reactive antibody recognizes the conformational structure of gp120. These results strongly suggest that molecular mimicry between HIV-gp120 and platelet gpIIIa may be important in the pathogenesis of immune thrombocytopenia in AIDS-free HIV-infected patients.
journal_name
Clin Exp Immunoljournal_title
Clinical and experimental immunologyauthors
Bettaieb A,Oksenhendler E,Duedari N,Bierling Pdoi
10.1046/j.1365-2249.1996.917606.xsubject
Has Abstractpub_date
1996-01-01 00:00:00pages
19-23issue
1eissn
0009-9104issn
1365-2249journal_volume
103pub_type
杂志文章abstract::Although both envelope glycoproteins of the hepatitis C virus, E1 and E2/NS1, show a high degree of sequence variation, the E1 protein includes a well conserved domain, which may be functionally important. We have analysed the human B cell response to a peptide fragment from amino acid residues 314-330 (EP3) covering ...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.1995.tb08351.x
更新日期:1995-08-01 00:00:00
abstract::Patients with common variable immunodeficiency (CVID) have reduced numbers and frequencies of dendritic cells (DCs) in blood, and there is also evidence for defective activation through Toll-like receptors (TLRs). Collectively, these observations may point to a primary defect in the generation of functional DCs. Here,...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/cei.12239
更新日期:2014-03-01 00:00:00
abstract::We have shown that immunization with dendritic cells (DCs) pulsed with hepatitis B virus core antigen virus-like particles (HBc-VLP) packaging with cytosine-guanine dinucleotide (CpG) (HBc-VLP/CpG) alone were able to delay melanoma growth but not able to eradicate the established tumour in mice. We tested whether, by ...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.2010.04226.x
更新日期:2010-10-01 00:00:00
abstract::Pretreatment of guinea-pigs with cyclophosphamide (Cy) (300 mg/kg) 3 days before cutaneous infection with Leishmania enriettii caused an increased intensity of the lesion at the site of infection and an increase in the incidence of widespread metastases. Decreased levels of circulating antibody were found from the fir...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1976-04-01 00:00:00
abstract::Intraperitoneal infection of mice with mycobacteria induces the persistent mobilization of neutrophils to the infected peritoneal cavities. The recruitment of the neutrophils was mediated by the immune system since it was enhanced by immunization and reduced in T cell-deficient nude and SCID mice. Anti-mitotic treatme...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.1992.tb06889.x
更新日期:1992-07-01 00:00:00
abstract::Transmembrane activator and calcium modulator and cyclophilin ligand interactor-immunoglobulin (TACI-Ig) is a human fusion protein that binds and neutralizes both B lymphocyte stimulator (BLyS), a cytokine shown to be a key regulator of B cell maturation, proliferation and survival, and a proliferation-inducing ligand...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.2010.04293.x
更新日期:2011-02-01 00:00:00
abstract:UNLABELLED:OTHER THEMES PUBLISHED IN THIS IMMUNOLOGY IN THE CLINIC REVIEW SERIES Allergy, Host Responses, Cancer, Type 1 diabetes and viruses, Metabolic diseases. SUMMARY:Initiation of a successful immune response requires a working set of sensors that detect any noxious agent within the cellular microenvironment and ...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2249.2011.04534.x
更新日期:2012-03-01 00:00:00
abstract::Previous studies have indicated phenotypical differences in glutamic acid decarboxylase 65 autoantibodies (GADA) found in type 1 diabetes (T1D) patients, individuals at risk of developing T1D and stiff-person syndrome (SPS) patients. In a Phase II trial using aluminium-formulated GAD(65) (GAD-alum) as an immunomodula...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/cei.12026
更新日期:2013-03-01 00:00:00
abstract::Most patients with late-onset bypogammaglobulinaemia have normal numbers of B cells. In addition, some of these patients have been shown to have circulating T cells which suppress immunolobulin production in vitro. From our present studies on a large series of patients it appears that these two findings distinguish tw...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1981-05-01 00:00:00
abstract::The immune and bone systems maintain homeostasis by interacting closely with each other. Rheumatoid arthritis is a pathological consequence of their interplay, as activated T cell immune responses result in osteoclast-mediated bone erosion. An imbalance between forkhead box protein 3 (Foxp3)+ regulatory T (Treg ) cell...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章,评审
doi:10.1111/cei.13188
更新日期:2018-10-01 00:00:00
abstract::Cell death and the release of chromatin have been demonstrated to activate the immune system producing autoantibodies against nuclear antigens in patients with systemic lupus erythematosus (SLE). Apoptosis, necrosis, necroptosis, secondary necrosis, autophagy and the clearance of dying cells by phagocytosis are proces...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章,评审
doi:10.1111/cei.12417
更新日期:2015-01-01 00:00:00
abstract::The present standard of care for B cell non-Hodgkin's lymphoma includes the anti-CD20 monoclonal antibody rituximab. Although combination treatments with chemotherapy and rituximab improved the duration of remissions and overall survival in indolent B cell lymphoma, the disease is essentially incurable. Thus, new ther...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.2012.04658.x
更新日期:2012-12-01 00:00:00
abstract::The expression and up-regulation of cell adhesion molecules on a human colonic epithelial cell line HT-29, and the peripheral blood T lymphocyte proliferation responses to bacterial superantigens presented by this cell line were investigated, compared with peripheral blood monocytes. In HT-29 cells, there was constitu...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2249.1997.3961293.x
更新日期:1997-06-01 00:00:00
abstract::Experimental allergic encephalomyelitis was induced in rhesus monkeys by immunization with bovine brain homogenate emulsified in complete Freund's adjuvant. Four monkeys were treated with anti-CD4 (OKT4+4A) monoclonal antibodies after the onset of clinical signs. One monkey developed a chronic-progressive course of EA...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1987-05-01 00:00:00
abstract::Modern era advancements in medical care, with improved treatment of infections, can result in delayed diagnosis of congenital immunodeficiencies. In this study we present a retrospective cohort of 16 patients diagnosed with Chronic Granulomatous Disease (CGD) at adulthood. Some of the patients had a milder clinical ph...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/cei.13474
更新日期:2020-09-01 00:00:00
abstract::Myeloid FcαRI, a receptor for immunoglobulin (Ig)A, mediates cell activation or inhibition depending on the type of ligand interaction, which can be either multivalent or monovalent. Anti-inflammatory signalling is triggered by monomeric targeting using anti-FcαRI Fab or IgA ligand binding, which inhibits immune and n...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.2011.04452.x
更新日期:2011-11-01 00:00:00
abstract::The anti-schistosomular humoral responses of guinea-pigs vaccinated with radiation-attenuated cercariae of Schistosoma mansoni have been investigated in vitro. The sera of vaccinated animals contain schistosomulicidal complement-fixing antibodies which peak in titre at week 5 after vaccination and predominantly consis...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1987-02-01 00:00:00
abstract::In vitro IgG synthesis by peripheral blood mononuclear cells (PBM) from patients with chronic liver disease (CLD) was studied. In addition, the effect of pokeweed mitogen (PWM), polyadenylic-polyuridylic acid complexes (poly A:U) and thymosin fraction 5 on IgG synthesis was determined. Unstimulated cultures of PBM fro...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1981-02-01 00:00:00
abstract::Monocytes and endothelial cells were stimulated in co-culture with allogeneic lymphocytes to produce thromboplastin (TPL). The induction was biphasic, an early response (8-24 h) was greatly augmented by cyclosporin A (CS) (0.5-5 micrograms/ml) whereas the late response (day 3-4) was inhibited. Prednisolone inhibited b...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1989-06-01 00:00:00
abstract::L-selectin in one of the key members of the selectin family of adhesion molecules and initiates leucocyte attachment to specialized high endothelial venules. The shed form, which retains functional activity, can be detected in biological fluids and is increased in diseases of many kinds. In the present study, we inves...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2249.1996.37744.x
更新日期:1996-05-01 00:00:00
abstract::The mycobacterial antigens and the factors related to protection for the development of active tuberculosis are not known. In a natural model of tuberculosis, we studied 10 patients with active pulmonary tuberculosis (non-protective immune response) and 38 healthy household contacts (protective immune response). We te...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.1994.tb06233.x
更新日期:1994-04-01 00:00:00
abstract::Endogenous retrovirus-3 (ERV-3) is an endogenous retrovirus encoding an open reading frame for an envelope protein expressed in placenta. In this study we also found high levels of expression in fetal heart, with peak expression occurring between 11 and 17 weeks of gestation. Antibodies to a peptide corresponding to a...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1996-06-01 00:00:00
abstract::Spontaneous sperm agglutination was observed in the ejaculate of a 39-year-old male (patient Z). Using an enzyme-linked immunosorbent assay (ELISA) with spermatozoa fixed to wells of a microtitre plate it was determined that IgA was associated with patient Z's spermatozoa but not with a pooled sample of spermatozoa fr...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1981-05-01 00:00:00
abstract::Human alveolar macrophages (AM) were obtained by bronchoalveolar lavage from 18 patients with a variety of conditions. For each patient the percentages of AM showing the following properties were determined: (1) staining for the enzymes non-specific esterase (NSE) and acid phosphatase (ACP); (2) in vitro phagocytosis ...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1985-06-01 00:00:00
abstract::Recently we showed the in vivo relevance of chemokines in cases of bacterial peritonitis in continuous ambulatory peritoneal dialysis (CAPD) patients. Mesothelial cells, the most numerous cells in the peritoneal cavity, are hypothesized to function as a main source of chemokine production. We investigated the time- an...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2249.1998.00592.x
更新日期:1998-05-01 00:00:00
abstract::We investigated the clearance kinetics and tissue distribution of different sized IgA in normal and macrophage-depleted rats. Rats were injected iv with liposomes containing dichloromethylene diphosphonate (DMDP). DMDP treatment resulted in complete depletion of liver macrophages 24-48 h after administration. Normal a...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.1991.tb05693.x
更新日期:1991-07-01 00:00:00
abstract::We analysed the proportions of different microparticles (MPs) in plasma from patients with rheumatoid arthritis (RA), and assessed their relationship with disease activity/therapy and their in-vitro effect on proinflammatory cytokine release. Blood and urine samples were obtained from 55 patients with RA (24 untreated...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/cei.12598
更新日期:2015-06-01 00:00:00
abstract::Stress known to stimulate sympathetic activity, as well as the hypothalamic-pituitary-adrenal axis (HPA), produces a significant increase in adrenomedullin (AdM) levels, suggesting a regulatory or protective role for AdM in countering HPA activation that follows a variety of stressors. Stressors can modulate the secre...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.2010.04156.x
更新日期:2010-07-01 00:00:00
abstract::We have investigated the expression of chemokines and their receptors in leprosy skin lesions using immunohistochemistry. Skin biopsies from 25 leprosy patients across the leprosy spectrum, 11 patients undergoing type I reversal reactions and four normal donors were immunostained by ABC peroxidase method using antibod...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.2003.02306.x
更新日期:2003-12-01 00:00:00
abstract::Delayed hypersensitivity skin reactions to tuberculin when injected alone or in mixture with antigens of M. leprae were examined in leprosy patients and in healthy controls. The tuberculin reaction was significantly inhibited in more than one half of both LL and BT patients by the soluble extract of M. leprae (leprosi...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1987-04-01 00:00:00