Abstract:
:Recent evidence suggests that T cell apoptosis could be involved in the pathogenesis of HIV-1 infection. As the progression of HIV-2 associated disease appears to be slower than that of HIV-1, we investigated whether there were differences in the degree of T cell death and apoptosis in peripheral blood mononuclear cell (PBMC) cultures from patients with HIV-1 or HIV-2 infection. PBMC from healthy controls (n = 28) and patients infected with HIV-1 (n = 26: asymptomatic (ASY)/persistent generalized lymphadenopathy (PGL), n = 16; and AIDS-related complex (ARC)/AIDS n = 10) or HIV-2 (n = 30: ASY/PGL, n = 16; ARC/AIDS, n = 14) were cultured in the absence or presence of mitogens (PHA, PWM) or superantigen (SEB). After 48 h, cell death (CD) was assessed by trypan blue exclusion and in some patients programmed cell death (PCD) was quantified in flow cytometry by measuring the percentage of hypodiploid nuclei corresponding to fragmented DNA, after treating the cells with a propidium iodide hypotonic solution. HIV-1 and HIV-2 ARC/AIDS patients and ASY/PGL HIV-1+ patients had significant increases in cell death percentages compared with controls, both in unstimulated and stimulated lymphocyte cultures. However, HIV-2+ ASY/PGL patients did not exhibit significant increases of cell death in unstimulated cultures. In addition, the comparison between HIV-1 and HIV-2 infected subjects in similar stages of disease, showed no significant differences in CD in the ARC/AIDS patients, although ASY/PGL HIV-2 infected subjects had lower levels of CD than the HIV-1+ ASY/PGL (3.4% +/- 0.6 s.e.m. versus 6.8% +/- 1.1 s.e.m., P < 0.01). PCD was significantly increased both in ASY/PGL (14.3% +/- 2.2 s.e.m., n = 8, P < 0.005) and in ARC/AIDS (25.3% +/- 4.5 s.e.m., n = 9, P < 0.001) HIV-1+ patients compared with healthy controls (5.8% +/- 1.7 s.e.m., n = 11). This contrasts with HIV-2 infected subjects where the ASY/PGL patients (10.0% +/- 2.8 s.e.m., n = 6) did not differ significantly from healthy controls, although ARC/AIDS patients (27.2% +/- 4.2 s.e.m., n = 9, P < 0.001) had significantly increased levels of PCD. In conclusion, this is the first report describing the occurrence of spontaneous and activation-induced lymphocyte death by apoptosis in HIV-1 infected subjects.(ABSTRACT TRUNCATED AT 400 WORDS)
journal_name
Clin Exp Immunoljournal_title
Clinical and experimental immunologyauthors
Jaleco AC,Covas MJ,Victorino RMdoi
10.1111/j.1365-2249.1994.tb06123.xsubject
Has Abstractpub_date
1994-11-01 00:00:00pages
185-9issue
2eissn
0009-9104issn
1365-2249journal_volume
98pub_type
杂志文章abstract::The number of NK T cells was measured in relation to the Th1/Th2 imbalance observed in RA. Peripheral blood samples of patients with RA (n = 60) and healthy controls (n = 36) were stained with anti-NK receptor 1A (anti-NKR-P1A), anti-CD56, and anti-CD3 MoAbs, and examined by three-colour flow cytometry. NK T (NKR-P1A+...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2249.1999.01018.x
更新日期:1999-10-01 00:00:00
abstract::Mouse peritoneal macrophages were activated in serum-free culture with lipopolysaccharide, dextran sulphate or C3b. They were found to liberate into the culture medium a cytolytic factor and a factor which was pharmacologically indistinguishable from C3a. The cytolytic activity was neutralized by antiserum against C3a...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1978-03-01 00:00:00
abstract::IL-5 is a major factor inducing differentiation of B lymphocytes into immunoglobulin-producing cells as well as a main regulator of eosinophils. Recently, we have shown that peripheral blood mononuclear cells (PBMC) from patients with alveolar echinococcosis (AE) express IL-5 mRNA after stimulation with crude Echinoco...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2249.1997.4031299.x
更新日期:1997-07-01 00:00:00
abstract::Previous studies show that endoplasmic reticulum-associated aminopeptidase (ERAP1/ERAP2) and runt-related transcription factor 3 (RUNX3) gene polymorphisms are associated with AS (ankylosing spondylitis) in European Caucasians. However, contradictory results were reported in different Asian populations. The purpose of...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/cei.13121
更新日期:2018-07-01 00:00:00
abstract::IgM-rheumatoid factor (RF) interference in the determination of total serum IgE and IgE-containing circulating immune complexes (IgE-CIC) was studied by inhibition experiments in vitro comparing a new ELISA technique free of IgM-RF interference with more widely used RIA methods. It was shown that a considerable overes...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1988-04-01 00:00:00
abstract::Peripheral blood mononuclear cells from 14 healthy donors and 22 allergic patients were incubated with 51Cr-labelled chicken erythrocytes coated with an IgE myeloma protein or rabbit IgG antibodies. Mononuclear cells from patients with severe atopic disorders released a significantly greater percentage of 51Cr (P less...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1981-03-01 00:00:00
abstract::Amino acid residues involved in the peptide binding groove of HLA-DRB1 alleles were examined in three Nigerian ethnic groups with leprosy (n = 287) and 170 controls to determine the role of DRB1 alleles in disease outcome with Mycobacterium leprae. Nine positively charged motifs and two others with neutral charge to t...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2249.1999.01034.x
更新日期:1999-10-01 00:00:00
abstract::The role of suppressive anti-retroviral therapy (ART) in eliciting restoration of dysregulated immune function remains unclear in HIV-1 infection. Also, due to tailoring of therapeutic regimens towards HIV-1, this possible impairment of therapy may be even more pronounced in HIV-2 and dual (HIV-D) infection. Thus, we ...
journal_title:Clinical and experimental immunology
pub_type: 临床试验,杂志文章
doi:10.1111/cei.13342
更新日期:2019-11-01 00:00:00
abstract::The IgG and IgA subclass distribution of specific antibodies as well as the distribution of total and specific IgE in 15 patients with schistosomiasis was determined in consecutive samples before and after initiation of treatment. An adult worm antigen preparation and a soluble egg antigen preparation were used as ant...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1988-09-01 00:00:00
abstract::In a family with partial or total adenine phosphoribosyl transferase (APRT) deficiency, T and B cell function was evaluated by counting rosette-forming cells, by investigating lymphocyte transformation to phytohaemagglutinin (PHA), concanavalin A (Con A) and pokeweed mitogen (PWM), by assaying serum immunoglobulins an...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1979-06-01 00:00:00
abstract::Experimental autoimmune uveitis (EAU) is an organ-specific autoimmune disease and has served as a model of certain ocular inflammatory conditions in man. The present study was aimed at separating the effects of MHC and non-MHC genes on the development of EAU in the rat. EAU-susceptible LEW (RT1l), EAU-resistant WKAH (...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.1991.tb02947.x
更新日期:1991-12-01 00:00:00
abstract::In patients with ANCA-associated vasculitis (AAV), CD25 expression is increased on circulating T cells. Although in animal experiments the role of CD4(+) CD25(+) T-regulatory-cells (T(reg)) in protection against autoimmunity is well established, the role of these cells in AAV is unknown. To investigate the hypothesis ...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.2005.02731.x
更新日期:2005-04-01 00:00:00
abstract::In vitro monoclonal immunoglobulin (mIg) production of cultured tumour cells--prepared from the bone marrow (BM) or from the peripheral blood (PB) of 40 multiple myeloma (MM) patients, 16 patients with monoclonal gammopathy of undetermined significance and two patients with M. Waldenström--was measured with an enzyme-...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1986-07-01 00:00:00
abstract::Type 1 IFN is thought to be implicated in the autoimmune process of SLE. Plasmacytoid dendric cells (DC), which are natural IFN-alpha producing cells, play a pivotal epipathogenic role in SLE. The present study was undertaken to investigate the phenotypic characteristics of peripheral blood DC in SLE patients in compa...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.2005.02897.x
更新日期:2005-10-01 00:00:00
abstract::We describe a patient with hypergammaglobulinaemic purpura and show that the serum contains IgG and IgA immune complexes sedimenting between IgM and IgG on ultracentrifugation. The complexes containing IgG were markedly temperature dependent. A drop in temperature from 37 degrees C to 28 degrees C gave a seventeen-fol...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1980-01-01 00:00:00
abstract::The cytotoxic functions of highly purified blood lymphocytes from patients with breast cancer were studied before and after radiotherapy. Addition of PHA or of rabbit antibodies to target cells (chicken erythrocytes) were chosen as two means of inducing lymphocyte cytotoxicity in vitro. The proportion of T and non-T-l...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1975-11-01 00:00:00
abstract::Two kinds of brush border antigens were isolated from pronase-treated rat tubular material by gel filtration, DEAE-chromatography and disc-electrophoresis, successively. One, a 0.05 M antigen which was eluted from DEAE-column with 0.05 mol of NaCl solution, has no nephritogenic ability when inoculated into homologous ...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1986-11-01 00:00:00
abstract::The membrane attack complex (MAC) of complement is activated by immune and non-immune mechanisms in the kidney. MAC has been found associated with glomerular immune deposits, but also to cell remnants, particularly along tubules and in vessel walls. Clusterin and S-protein (vitronectin) bind to MAC, rendering it cytol...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.1992.tb06459.x
更新日期:1992-06-01 00:00:00
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1979-06-01 00:00:00
abstract::Gambian children with past or present Plasmodium falciparum malaria were investigated for the incidence of Coombs positivity using monospecific antisera. Approximately 50% were positive and the most frequent form of erythrocyte sensitization was with C3d. Other specificities, EIgG, EIgGC3d and EIgGC4bC3d were less com...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1979-01-01 00:00:00
abstract::A monoclonal IgM smooth muscle antibody secreted by a hybrid (MMI-1) of mouse plasmacytoma NS-1 with spleen cells from mouse immunized with Treponema pallidum was detected by indirect immunofluorescence tests on frozen tissue sections and on acetone fixed monolayers of rat and human fibroblasts. The antibody did not r...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1983-06-01 00:00:00
abstract::Lymphocyte-enriched mononuclear cell fractions were obtained from the peripheral blood of four healthy young adults. Living B cells with membrane immunoglobulin (Ig) were studied by immunofluorescence to reveal exposed J-chain determinants or surface affinity for the secretory component (SC). Alcohol-fixed cell smears...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1976-07-01 00:00:00
abstract::Blood monocytes of patients with thyroid autoimmune disease (TAID) display defects in rearranging their cortical actomyosin cytoskeleton ('polarize') in response to chemoattractants. Such rearrangements also take place after the adherence of monocytes to the extracellular matrix (ECM). It is therefore not surprising t...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2249.2001.01583.x
更新日期:2001-07-01 00:00:00
abstract::The respective roles of thymus-derived and bone marrow-derived lymphocytes in the immune response to DNA was investigated in mice reconstituted with various cell populations using cell transfers. A helper effect of thymus-derived cells in the immune response to DNA was suggested by experiments performed in athymic nud...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1976-10-01 00:00:00
abstract::Anti-phospholipid syndrome (APS) is characterized by arterial and/or venous thrombosis and pregnancy morbidity. It is well known that in these patients thrombosis may be the result of a hypercoagulable state related to anti-β2-glycoprotein I (β2-GPI) antibodies. Moreover, platelets may play a role in thrombotic manife...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/cei.13248
更新日期:2019-04-01 00:00:00
abstract::Citrobacter rodentium is a murine pathogen that transiently colonizes the lumen of the large intestine. C. rodentium induces colitis, but the relative importance and temporal induction of the T helper type 17 (Th17) and regulatory T cell (T(reg)) pathways in protection from the infection and inflammation have not been...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.2009.03934.x
更新日期:2009-07-01 00:00:00
abstract::Here we describe the presence of IgG antibodies, in the sera of patients presenting with insulin-dependent diabetes mellitus (IDDM), that react in Western blots with a 60-kD protein (Mr 60K) from rat hepatic microsomal extracts. Sera from 60 IDDM patients were screened and 31.6% were positive for the Mr 60K band. This...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2249.2000.01366.x
更新日期:2000-11-01 00:00:00
abstract::Bullous pemphigoid is a blistering skin disease characterized by autoantibodies against the NC16a domain of bullous pemphigoid 180. This study was performed to characterize and map the fine specificity of T cell responses to NC16a. Peripheral blood mononuclear cells (PBMC) from a total of 28 bullous pemphigoid patient...
journal_title:Clinical and experimental immunology
pub_type: 临床试验,杂志文章
doi:10.1111/cei.12566
更新日期:2015-05-01 00:00:00
abstract::Lymphocyte subpopulations in thirty-nine patients with the tropical splenomegaly syndrome (TSS) were studied using the E-rosette, EAC rosette and direct immunofluorescent staining techniques. In the peripheral blood a decrease in the percentage of T-lymphocytes was found which was accompanied by an increase in the per...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1978-08-01 00:00:00
abstract::Anti-idiotypic antibodies (anti-Id Abs) are involved in the regulation of a number of immune responses including the IgE antibody production. In atopic patients, the increased synthesis of IgE antibodies could be related to a defective production of regulatory anti-Id Abs. In the present study, we first developed a se...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2249.1990.tb03303.x
更新日期:1990-06-01 00:00:00