Group B streptococcal antigens stimulated tumor necrosis factor alpha (TNF-alpha), interleukin-1 (IL-1), and IL-6 production in human blood cultures in a concentration- and time-dependent fashion. The minimal concentrations of type-specific polysaccharides, lipoteichoic acid, and group-specific polysaccharide required to produce these effects were, respectively, 0.01, 1, and 10 microg/ml. Cell ...

IL-10, IL-13, IFN-gamma, tumor necrosis factor (TNF)-alpha, LT-alpha, CD154, and TNF-related activation-induced cytokine (TRANCE) were expressed by 2-20% of rheumatoid arthritis (RA) synovial tissue CD4(+) memory T cells, whereas CD4(+) cells that produced IL-2, IL-4, or IL-6 were not detected. Expression of none of these molecules by individual CD4(+) cells correlated with the exception of TRA...

Tumor necrosis factor alpha (TNF-alpha) is overexpressed during human immunodeficiency virus (HIV) infection. RP 55778, a TNF-alpha synthesis inhibitor, decreases HIV replication in monocytes/macrophages. Therapeutic use of RP 55778 in vivo, like that of other biological response modifiers, would theoretically require association with dideoxynucleosides. We have evaluated here the combinatory e...

Nuclear factor-kappa B (NF-kappa B) is a ubiquitously expressed cellular factor regulated by the cytoplasmic factor inhibitor protein kappa B alpha (I kappa B alpha). Activation of NF-kappa B by cytokines, including tumor necrosis factor-alpha (TNF-alpha), requires the phosphorylation and degradation of I kappa B alpha. An anti-apoptotic role for NF-kappa B has recently been suggested. In the p...

Tumor necrosis factor alpha (TNF-alpha), also known as cachectin, was demonstrated to induce the expression of human immunodeficiency virus (HIV) in a chronically infected T-cell clone (ACH-2). Concentrations of recombinant TNF-alpha as low as 50 pg/ml induced a significant increase over background of HIV expression in the ACH-2 cells as determined by supernatant reverse transcriptase activity....

OBJECTIVES To determine whether -238G/A and -857C/T polymorphisms of tumor necrosis factor-alpha (TNF-alpha) gene promoter were associated with outcomes of hepatitis B virus infection. METHODS A total of 246 HBV self-limited infected subjects and 443 chronic hepatitis B (HB) patients were recruited in this case-control study. TNF-alpha-238G/A and -857C/T gene promoter polymorphisms were exami...

Tumor necrosis factor alpha (TNF-alpha) induced morphologic changes such as chromatin condensation and cell shrinkage in a feline fibroblastic cell line (CRFK) chronically infected with feline immunodeficiency virus (FIV) but not in uninfected CRFK cells. DNA extracted from TNF-alpha-treated CRFK cells infected with FIV showed a ladder of nucleosomal DNA, indicating that this cytocidal effect b...

Introduction: Although the initial hypothesis for the action of doxepin was based on the inhibition of the reuptake of neurotransmitters, it has been suggested that it may also involve other mechanisms. Therefore, this study aims to investigate the effect of doxepin on spatial memory, tumor necrosis factor alpha (TNF-&alpha) level, expression of pro-apoptotic (Bad and Bax) and anti-apoptotic (B...

The tumor necrosis factor alpha (TNF-alpha) gene was introduced by retroviral gene transfer into the TNF-alpha-insensitive tumor cell line J558L. Production of 40 pg/ml TNF-alpha by clone J2T12 consistently did not change the growth rate in vitro, but drastically suppressed tumor growth when injected into syngeneic BALB/c mice. Within 2 wk, 90% of the mice inoculated with J558L cells developed ...

Phosphorylation of inhibitor of kappa B (IkappaB) proteins is an important step in the activation of the transcription nuclear factor kappa B (NF-kappaB) and requires two IkappaB kinases, IKK1 (IKKalpha) and IKK2 (IKKbeta). Mice that are devoid of the IKK2 gene had extensive liver damage from apoptosis and died as embryos, but these mice could be rescued by the inactivation of the gene encoding...