Abstract:
:The phenomenon of apoptosis observed in lymphoid cells from HIV+ subjects is an important factor contributing to their massive depletion. Several studies have identified nitric oxide (NO) as one of the molecules involved in the apoptosis phenomenon observed during HIV infection. It has been shown that HIV-derived gp120 enhances NO synthesis in cultured cells from HIV+ individuals. Therefore, we tested the potential of two nitric oxide synthase (NOS) inhibitors with different mechanisms of action as preventive agents of in vitro apoptosis, in peripheral blood mononuclear cells (PBMC) from HIV+ subjects. PBMC isolated from these patients always showed higher apoptosis levels than normal subjects, a fact that correlated with overproduction of NO and with reduction of mitochondrial transmembrane potential in these cells. We identified the CD8+ T lymphocyte sub-population as the major apoptosis target in PBMC cultures. Treatment with NO inhibitors N(G)-monomethyl-L-arginine (L-NMMA) and dexamethasone (DEX) inhibited spontaneous and mitogen-induced apoptosis, while reducing mitochondrial alterations in PBMC from both normal (30%) and HIV+ (70%) subjects. The development of apoptosis in target cells correlated with their mitochondrial transmembrane potential impairment and with increased expression of Fas (CD95) molecules. These results offer additional alternatives for the manipulation of cellular depletion in HIV disease.
journal_name
Immunol Investjournal_title
Immunological investigationsauthors
García M,del Llano AM,Cruz-Colón E,Saavedra S,Lavergne JAdoi
10.1081/imm-100108163subject
Has Abstractpub_date
2001-11-01 00:00:00pages
267-87issue
4eissn
0882-0139issn
1532-4311journal_volume
30pub_type
杂志文章abstract::Porphyromonas gingivalis (P.g) is the primary bacterial agent in many forms of chronic periodontitis. Since polymorphonuclear leukocytes (PMNs) are first-line responders to P.g.- induced inflammation, and fibrinogen is important for in vivo PMN in this disease, we have studied the effect of N-formyl-methionyl-leucyl-p...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1080/08820130500496811
更新日期:2006-01-01 00:00:00
abstract::Thrombocytopenia as a complicating event in human immunodeficiency infection is a rather common hematological disorder and in many aspects resembles idiopathic(immune) thrombocytopenic purpura (ITP). Consequently, treatment of severe cases is similar to treating ITP, but steroids should be administered with particular...
journal_title:Immunological investigations
pub_type: 杂志文章,评审
doi:10.3109/08820139109050791
更新日期:1991-04-01 00:00:00
abstract::Exposure to laboratory animals poses a hazard for development of occupational allergy. Identification of antigenic determinants of allergenic proteins may be valuable for immunotherapeutic purposes. Overlapping peptides of the major allergen in rat urine, Rat n 1.02, corresponding to the protein alpha2u-globulin were ...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139909062266
更新日期:1999-09-01 00:00:00
abstract::Objectives: Type 1 diabetes mellitus (T1D) has been disclosed to be associated with an elevated risk of cardiovascular disease (CVD), as well as increased risks of losing bone mass and progression of osteoporosis (OP). Osteoprotegerin (OPG), as a decoy receptor, has been demonstrated to play a critical role in bone me...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1080/08820139.2019.1710531
更新日期:2021-02-01 00:00:00
abstract::Objectives: The aim of this study was to assess the genetic association between vascular endothelial growth factor (VEGF) gene polymorphisms and the risk of pre-eclampsia (PE).Methods: A systematic literature search of several databases (PubMed, Embase, and the China National Knowledge Infrastructure (CNKI)) was condu...
journal_title:Immunological investigations
pub_type: 杂志文章,meta分析
doi:10.1080/08820139.2019.1659812
更新日期:2020-02-01 00:00:00
abstract::Dengue viruses (DV) infection is an important public health issue all over the world. Although the pathogenesis remains unclear, the overwhelmingly triggered immune responses have been consistently observed. Recently, we and other researchers demonstrated that the natural hosts for DV are dendritic cells (DC), the pri...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1081/imm-200038680
更新日期:2004-01-01 00:00:00
abstract::We report a method combining mixed lymphocyte reaction (MLR) using a carboxyfluorescein diacetate succinimidyl ester (CFSE)-labeling technique, intracellular cytokine immunofluorescence staining (ICIS), and multiparameter flow cytometry for simultaneous determination of proliferation and cytokine-secreting activity in...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1081/imm-120038079
更新日期:2004-08-01 00:00:00
abstract::The contribution of interleukin-2 (IL-2)-responsive bystander cells to the proliferative responses of human peripheral blood T lymphocytes to antigens used for sensitization such as Purified Protein Derivative (PPD), Tetanus toxoid (T T) and Influenza virus was investigated. Marked proliferation of the unfractionated ...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820138809055720
更新日期:1988-03-01 00:00:00
abstract::Patients with metastatic breast carcinoma (BCa) have defective peripheral blood lymphocyte (PBL) responsiveness to mitogenic and antigenic stimulation. In the following experiments, glycopeptides were isolated from the pronase digests of breast carcinoma tissue. After elution from Sephadex G-50, glycopeptides from BCa...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820138809055715
更新日期:1988-03-01 00:00:00
abstract::A previous study has demonstrated that both interferon-gamma (IFN-gamma) and lipopolysaccharide (LPS) were needed to induce the production of nitric oxide (NO) in BNL CL.2 cells, murine embryonic liver cells. We here demonstrate that when BNL CL.2 cells were cultured with serum-free medium, they were induced to produc...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139909061144
更新日期:1999-03-01 00:00:00
abstract::Spleen cells of C57BL/6 mice injected with corticosterone were compared with cells from mice injected with saline in their ability to respond to the mitogens PHA, Con A, and LPS. Both unseparated cells and cells separated into T-enriched and B-enriched fractions were studied. After either seven daily injections or fou...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820138909045782
更新日期:1989-10-01 00:00:00
abstract::Previous work had implicated T cells within the stimulating population as having a significant role in the MLR. We now report that depletion of T cells from the stimulators caused a reduction in proliferative response in mixed leukocyte reaction (MLR) by 50% or more. This response could be restored by adding T-enriche...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820138609042020
更新日期:1986-03-01 00:00:00
abstract::DNA vaccine represents a powerful approach for prevention of avian H5N1 influenza infection. Yet, DNA vaccine-induced immune responses might be limited by the short duration of antigen expression. As a strategy to enhance adaptive immune responses elicited by a hemagglutinin 5 (H5) DNA vaccine, we explored the effect ...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139.2014.988718
更新日期:2015-01-01 00:00:00
abstract::Very little is known about the effects of acute psychological stress on the production of reactive oxygen species (ROS) by human phagocytic cells and the interplay between subjectively perceived stress, mediating hormones, variations in the number of peripheral leukocytes and ROS production. We measured psychological ...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1081/imm-120004800
更新日期:2002-05-01 00:00:00
abstract::Conventional plate ML-ELISA technique for diagnosis of recent cases of amoebiasis was converted into a simple polyvinyl chloride strip multilayer-enzyme linked immunosorbent assay (PVC strip ML-ELISA). This report details the development and preliminary characterization of the PVC strip ML-ELISA method for Entamoeba h...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139109026242
更新日期:1991-12-01 00:00:00
abstract::An enzyme-linked immunoassay (EIA) is described and evaluated which quantitates human antibodies to serotype specific S. pneumoniae polysaccharide (PnPs) in human sera. Based on the observations previously described by Koskela (1), native PnPs are used as coating antigens and sera are absorbed with a soluble pneumococ...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1081/imm-100105064
更新日期:2001-08-01 00:00:00
abstract::VH4-34 gene encoded autoantibodies are elevated in systemic lupus erythematosus (SLE) and in other diseases associated with B-cell hyperproliferation/dysfunction. One of the autoantigens recognized by VH4-34-encoded antibodies are branched/linear poly N-acetyl lactosamine chains. Since the anti-carbohydrate response i...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139.2015.1015682
更新日期:2015-01-01 00:00:00
abstract::The role of innate immunity, e.g., complement activation and cytokine release in the hemodynamic alterations in the course of human septic shock is largely unknown. We prospectively studied 14 consecutive septic shock patients with a pulmonary artery catheter in place. For 3 days after admission, hemodynamic variables...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139.2010.502949
更新日期:2010-01-01 00:00:00
abstract::A rapid, quantitative enzyme-linked immunosorbent assay (ELISA) for the immunodiagnosis of Chagas' disease is described. The ELISA was standardized with the Falcon assay screening test (F.A.S.T.) system using a purified Trypanosoma cruzi epimastigote fraction (PEF) obtained by ion exchange chromatography. The ELISA te...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139809070892
更新日期:1998-01-01 00:00:00
abstract::Implantation of pellets containing 75 mg of morphine induced short term (4 day) morphine dependence and markedly reduced total number of spleen cells of BALB/c mice, without affecting total body or liver weight. Polyclonal responses induced by anti-CD3 antibodies, Concanavalin A or Escherichia coli lipopolysaccharide ...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139509066864
更新日期:1995-05-01 00:00:00
abstract::We investigated the functional and subset surface marker characteristics of supramammary lymph node T cell populations at sites proximal and distal to the mammary region of goats repeatedly injected with heat-treated Staphylococcus aureus antigen (HK-SAC). Flow cytometric studies showed quantitative differences in CD4...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139209066184
更新日期:1992-04-01 00:00:00
abstract::Rotaviruses were first recognized about 15 years ago in association with diarrhea in children and animals. Since then, rotaviruses have been determined to be the most important viral agent that causes clinically significant diarrhea in children and a need for an effective vaccination program has been recognized. This ...
journal_title:Immunological investigations
pub_type: 杂志文章,评审
doi:10.3109/08820138909112264
更新日期:1989-01-01 00:00:00
abstract::A single-nucleotide polymorphism in the promoter region of the CD14 gene at position 159 has been implicated in susceptibility to infectious diseases. We sought to determine the association between CD14 C-159 T functional promoter polymorphism and brucellosis in Western Iranian population where the disease is endemic....
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1080/08820130600634568
更新日期:2006-01-01 00:00:00
abstract::In order to characterize the immune response to BK virus, a human polyomavirus containing dsDNA and host cell histones, we followed the appearance of antibodies in five outbred rabbits after intravenous inoculation with purified infectious BK virus without any adjuvant. The animals were followed for 15 weeks after the...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139009042033
更新日期:1990-04-01 00:00:00
abstract::This study was conducted to evaluate the adjuvant potential of sulfated Radix Cyathulae officinalis Kuan polysaccharides (sRCPS) and their effects on specific cellular and humoral immune responses to hepatitis B subunit vaccine in mice. Our data demonstrated that sRCPS significantly promoted the rHBsAg-specific IgG, I...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820139.2015.1009546
更新日期:2015-01-01 00:00:00
abstract::In this study, we aimed to explore the association among gene variants of five cytokines, tumor necrosis factor alpha (TNF-α), transforming growth factor beta-1 (TGF-β1), interferon gamma (IFN-γ), interleukin-6 (IL-6), and interleukin-10 (IL-10), and clinical parameters and prognosis in patients with multiple myeloma ...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1080/08820139.2016.1208219
更新日期:2017-01-01 00:00:00
abstract::This preliminary study examined the effects of immunization with Bacteroides macacae, the monkey equivalent of the human species of B. gingivalis on ligature-induced periodontitis. During a 12 week immunization period, 8 out of the 12 Macacae fasicularis monkeys were immunized weekly with B. macacae washed cells and 4...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820138909112239
更新日期:1989-01-01 00:00:00
abstract::Background: Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder caused by genetic, environmental and immunological factors. It is known that neural development processes are affected by immune functions. The aim of this study is to evaluate the relationship between cytokines IL6 and IL1B gene polymorphisms...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1080/08820139.2020.1870489
更新日期:2021-01-12 00:00:00
abstract::Using antigen-induced proliferation assay the presence of macrophages was found to be essential for the development of the T cell response. Decreased ability of antigen presentation by macrophages from aged A/J mice was detected. ...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.3109/08820138509042005
更新日期:1985-04-01 00:00:00
abstract::Adoptive immunotherapy is an attractive cancer treatment modality due to its capacity to target primary and metastatic lesions with large numbers of tumor-reactive, cytotoxic lymphocytes. The inability of fully armed lymphocytes to traffic into sites of tumor has been proposed as a causal factor for the minimal succes...
journal_title:Immunological investigations
pub_type: 杂志文章
doi:10.1080/08820130701712867
更新日期:2007-01-01 00:00:00