Tumor necrosis factor-alpha (TNF-alpha) is a cytokine that plays a central role in inflammation. Glomerular levels of TNF-alpha are elevated in human and experimental glomerulonephritis. Glomerular cells produce and respond to TNF-alpha. One of the mechanisms by which these cells respond to TNF-alpha is through generation of reactive oxygen species. In this study, the effect of TNF-alpha on alb...

We investigated the mechanisms by which endogenous TNF-alpha modulates host defenses during experimental primary and secondary pulmonary infection with Histoplasma capsulatum (Hc). Neutralization of TNF-alpha in vivo resulted in increased CFU and 100% mortality in naive and immune mice challenged with Hc intranasally. Levels of IFN-gamma and granulocyte macrophage-CSF were elevated in TNF-alpha...

background: periodontitis and rheumatoid arthritis (ra) share a number of clinical and pathologic features, one of which is the presence of the tumor necrosis factor alpha (tnf-α)-induced bone resorption that is involved in the pathogenesis of both. objectives: to investigate the effect of tnf-α blockade on periodontal conditions in patients with active ra. method: the periodontal statuses of 3...

BACKGROUND The ability of leukocytes to release proinflammatory cytokines on lipopolysaccharide stimulation in vitro is impaired after cardiopulmonary bypass (CPB). This study tested contribution and interaction of humoral factors in altered leukocyte responsiveness to lipopolysaccharide. METHODS Whole blood and isolated peripheral-blood mononuclear cells (PBMCs) from 10 patients obtained aft...

background: pre-eclampsia (pe) is a pregnancy associated disorder characterized by hyper-tension and proteinuria. the first 2 stages of pe cause dysfunction in uteroplacental perfusion and oxidative stress while the third stage of pe is due to the release of inflammatory and angiogenic factors, which could lead to maternal endothelial damage and systemic inflammatory response. in this study, we...

Severe malarial anemia (SMA) is a primary cause of morbidity and mortality in immune-naïve infants and young children residing in areas of holoendemic Plasmodium falciparum transmission. Although the immunopathogenesis of SMA is largely undefined, we have previously shown that systemic interleukin-12 (IL-12) production is suppressed during childhood blood-stage malaria. Since IL-10 and tumor ne...

We studied the potential role of a cytokine regulatory mechanism(s) in LPS-dependent reprogramming and modulation of TNF-alpha and nitric oxide (NO) responses in mouse peritoneal macrophages. Reciprocal regulation of TNF-alpha and NO production by LPS-primed and LPS-stimulated macrophages was found to be dependent on the presence of soluble secretory products released by the cells during the in...

background almost one-third of the world's population is infected with mycobacterium tuberculosis, but only 10% of them develop tuberculosis. tnf-α/il-10 balance has key roles in controlling latent/activation stages of tuberculosis. objectives the objective of this study was to determine an association between polymorphic variants of the tnf-α and il-10 genes and tuberculosis. patients and meth...

BACKGROUND Transfusion of blood may contribute to immunosuppression in major surgery. The authors assessed the impact of alloantigens and storage on function of peripheral blood mononuclear cells cultured in their physiologic environment. METHODS Blood units (whole blood, packed erythrocytes) were prepared with or without prestorage leukodepletion and stored for 24-26 days. Blood samples were...

The objective of this study was to quantify, in vivo, constitutive and tumor necrosis factor alpha (TNF-alpha)-enhanced expression of mucosal addressin cell adhesion molecule-1 (MAdCAM-1) in different tissues from healthy wild-type mice (C57BL/6) as well as interleukin-10 (IL-10)-deficient mice with and without active colitis. Using the dual radiolabel monoclonal antibody technique, we found su...