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U937 cell clones in which efficient (plus) vs poor (minus) replication of HIV-1 occurs have been described. We evaluated the role of host factors in their differential ability to support HIV-1 replication. Plus clones constitutively produced TNF-α and viral replication was inhibited by neutralization of endogenous TNF-α. However, HIV-1 replication was strongly upregulated in minus clones by exogenous...
Over a 6 month period, in 192 patients admitted to the intensive care unit (ICU), a longitudinal analysis of whole blood lipopolysaccharide (LPS)-induced ex vivo cytokine production was performed on a daily basis until discharge from the ICU or death. Twenty-one patients with proven infections were in septic shock for the first time and for at least 3 days' duration. Ex vivo LPS-inducible release...
B lymphocyte stimulator (BLyS) is a novel member of the TNF family of proteins expressed by myeloid cells as membrane-bound and soluble forms. BLyS was shown to act specifically on B cells, inducing proliferation and immunoglobulin production both in vitro and in vivo. The present study was undertaken to characterize binding of radiolabeled BLyS to its cognate receptor on human B lymphocytes and examine...
Relapse of childhood acute lymphoblastic leukaemia (ALL) comprises a leading challenge of investigation. Characterization of leukaemic cells regarding their potency to express growth factors and surface molecules can provide insight into their aberrant biology. Thus, we analyzed bone marrow blasts from 10 children with relapsed B cell precursor ALL. The gene and protein expression of essential haematopoietic...
IL-18, or IGIF (interferon-gamma inducing factor), is an IL-1-related, pro-inflammatory cytokine, which plays a pivotal role in systemic and local inflammation. We have identified and characterized IL-1H, a novel IL-1-related molecule. IL-1H appears to be expressed in most tissues with relatively high levels in testis, thymus and uterus. The IL-1H transcripts were stimulated by phorbol ester (PMA)...
The full-length bovine interferon-γ (bIFN-γ) cDNA, including the secretion signal peptide coding region was recloned into baculovirus transfer vectors pAcYM1 and pBm050. These vectors were co-transfected withAutographa californica nuclear polyhedrosis virus (AcNPV) or Bombyx mori nuclear polyhedrosis virus (BmNPV) DNA into Spodoptera frugiperda cells (SF21AE) and Bombyx mori cells (BmN), respectively...
Peptidoglycan recognition protein (PGRP) binds to peptidoglycan (PG) or live bacteria and is upregulated by PG. PGRP is a ubiquitous protein involved in innate immunity. Tag7, a novel cytokine, is also induced by bacterial products; tag7 is apoptotic to murine L929 cells in a NF-κB-independent manner. Both of these genes are expressed in brain, lymphatic and haematopoietic tissues. We provide evidence...
Bullous pemphigoid (BP) is an autoimmune blistering skin disease characterized by the presence of autoantibodies to normal components of the hemidesmosome (BPAg1 and BPAg2). Histology of skin lesions demonstrate a subepidermal vesicle and a predominantly eosinophilic dermal cellular infiltrate. Interleukin 5 (IL-5) plays a major role in eosinophil recruitment and function. Using an ELISA, we investigated...
The present study explored the changes in hepatic secretion of tumour necrosis factor (TNF) and interleukin 6 (IL-6) during the regenerative process of the liver, focusing on the role of Kupffer cells. The secretions of TNF and IL-6 from the perfused rat liver were increased after 67% partial hepatectomy, reaching a maximum at 48h. The response of cytokine secretion induced by lipopolysaccharide (LPS:...
The Norwegian group B meningococcal outer membrane vesicle (OMV) vaccine consists of outer membrane proteins (OMPs) as main antigens with significant amounts of lipopolysaccharide (LPS; 5–9% relative to protein). We have studied the ability of this OMV vaccine preparation to induce secretion of pro-inflammatory cytokines, tumour necrosis factor α (TNF-α), interleukin 1β (IL-1β), interleukin 6 (IL-6),...
A randomized case-controlled study was carried out to investigate for interferon alpha therapy in atopic dermatitis (AD) of Besnier's prurigo pattern with normal serum IgE and normal blood eosinophil fraction. Interferon alpha therapy was conducted on 14 non-responders to interferon gamma and subsequent thymopentin therapy among 100 atopic dermatitis patients. Eight patients who improved significantly,...
We have isolated the first mosquito member of the TGF-β superfamily, As60A. As60A is a single copy gene, ∼5kb in length and encodes eight exons. Here we report the isolation and characterization of two of four transcripts produced from this gene. The transcripts As60A 1 and As60A 2 encode related 5′UTR/exon 1 sequences. As60A is most similar to the 60A genes from Drosophila and is...
To assess the contribution of cell interactions to the production of cytokines and type I collagen, fixed synovium T cell clones were cocultured on synoviocytes and levels of IL-6, LIF and PICP, a marker of type I collagen synthesis measured. Levels of IL-6 and LIF were higher with Th 1 than with Th 0 and Th 2 clones. Levels of PICP were decreased with Th 1 clones and...
Although the functional roles of interleukin (IL-)13 in haematopoietic cells are well investigated, those in non-haematopoietic cells remain to be addressed. IL-13 exerts its actions by binding to the IL-13 receptor (IL-13R) on target cells, which is composed of IL-13Rα1 and the IL-4 receptor α chain (IL-4Rα). However, there has been no study of localization of IL-13R in each tissue. To address this...
Interleukin 1α (IL-1α) has been implicated in the pathogenesis of infectious, auto-immune and inflammatory diseases. Polymorphisms in the genes encoding IL-1α, IL-1β and the IL-1 receptor antagonist (ILRN) molecules have been associated with several inflammatory diseases. As the marker D2S160 has been characterized as a candidate locus for Ankylosing Spondylitis (AS) after a genome-wide scan, and...
Deviation of type 1/type 2 cytokine balance to type 2 predominance may contribute to tumour progression. We investigated effect of interleukin (IL-)15 on modulation of type 1/type 2 balance in addition to non-major histo-compatibility complex (MHC)-restricted killer induction in the tumour-growing site. IL-15 induced significant killer activity in mononuclear cells (MNC) in malignant pleural effusion...
A highly polymorphic AT rich repeat exists in the 3′ flanking region of the IL-6 gene. Using Genescan analysis we studied this region of the IL-6 gene in 55 normals and 95 patients with rheumatoid arthritis (RA). The influence of alleles on need for early major joint surgery in RA patients was assessed. We identified nine alleles of which, G8, G7 and G4 were the most common (37% vs 36% vs 13%). RA...
We investigated inflammatory cytokine response in chronic depressed patients during abdominal surgery. Twenty-five major depressed patients (Group D) and twenty-five patients (Group C) as the control were studied. Plasma interleukin 6 (IL-6), interleukin 8 (IL-8) and tumour necrosis factor-alpha (TNF-α) concentrations were measured before and at 15 min after induction of anesthesia, the end of surgery,...
The use of an IFN-γ ELISPOT assay to evaluate cellular immune responses has gained increasing popularity, especially as a surrogate measure for cytotoxic T lymphocyte (CTL) responses. We have compared the IFN-γ ELISPOT assay and the traditional 51 Cr release assay for detection of human natural killer (NK) cell activity. The cell populations used for evaluation of these assays included freshly...
Spontaneous orthotopic liver transplant (OLT) tolerance occurs uniformly between the inbred rat strains of DA (MHC haplotype RT1 a ) into PVG (RT1 c ) despite a fully allogeneic barrier. Animals transplanted in this combination do, however, undergo a rejection episode which appears to be self-limiting. In order to clarify this further we under took in situ measurements of the cytokines...
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