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Tumor necrosis factor-alpha (TNF-alpha), a ubiquitous pro-inflammatory cytokine, is an important mediator in the immune-neuroendocrine system that affects the CNS. The present study demonstrates that treatment with TNF-alpha activates microglia to increase TNF-alpha production in primary cultures of
Manganese superoxide dismutase (MnSOD) is a mitochondrial enzyme that scavenges superoxide (O2-) ions. We studied the regulation of MnSOD gene expression by irradiation and the mechanisms in human monocytic cell line THP-1. We found that irradiation induced expression of the MnSOD gene through the
Manganese superoxide dismutase (MnSOD), a tumor necrosis factor (TNF)-inducible reactive oxygen-scavenging enzyme, protects cells from TNF-mediated apoptosis. To understand how MnSOD is regulated, transient transfections of promoter-reporter gene constructions, in vitro DNA binding assays, and in
The manganese-dependent superoxide dismutase (MnSOD) Ala16Val single nucleotide polymorphism (SNP) has shown to be associated to risk factors of vascular diseases. Brain-Derived Neurotrophic Factor (BDNF) plays an essential role in the plasticity and neuronal regeneration of the brain after vascular
We have demonstrated that A375 melanoma cells express mRNA for both types of tumor necrosis factor (TNF) receptors and receptor proteins on their plasma membranes. Specific agonist and blocking antibodies to either 55-kDa (TNF-R1) or 75-kDa (TNF-R2) TNF receptors combined with two-dimensional gel
Manganese superoxide dismutase (MnSOD) protects mitochondria from oxidative damage. Alterations in the regulation of MnSOD plays an important role in the development of many types of cancer. Activity of this enzyme is induced by inflammatory cytokines and other conditions that increase oxygen
Tumor necrosis factor a (TNFalpha) and manganese superoxide dismutase (MnSOD) are thought to play critical roles in the process of lung injury, repair, and disease. The induction of TNFalpha and MnSOD were examined in a model of progressive pulmonary fibrosis along the length of the alveolar duct in
In this study, we investigated the role of activated Ha-ras oncogene on the growth-regulatory properties of tumor necrosis factor (TNF) in C3H mouse embryo fibroblasts. TNF-resistant 10T1/2 cells transfected with an activated Ha-ras oncogene not only produced tumors in nude mice but also exhibited
Myocardial-necrosis was produced in two groups of albino rats by subcutaneous injection of isoprenaline in doses of 85 mg/kg and 42.5 mg/kg. The necrosis was confirmed by ECG changes, increased serum activities of AspAT, AlAT, GPT and LDH, and by histological examination. Myocardial manganese after
Tumor necrosis factor (TNF) induces synthesis of manganese superoxide dismutase (MnSOD). It was previously shown that overexpression of MnSOD protected some mammalian cells from TNF cytotoxicity. The purpose of this study was to establish whether MnSOD was increased in cells selected for resistance
A mutant Escherichia coli lipopolysaccharide (LPS) lacking myristoyl fatty acid markedly stimulates the activity of manganese superoxide dismutase (MnSOD) without inducing tumor necrosis factor alpha (TNFalpha) production by human monocytes (Tian et al., 1998, Am J Physiol 275:C740.), suggesting
BACKGROUND
Four polymorphisms have been described associated with either increased risk for alcoholic liver disease (ALD) or more serious histological lesions: tumour necrosis factor alpha (TNF-alpha) G(-238)A, interleukin-10 (IL-10) C(-627)A, promoter of CD14 endotoxin receptor gene C(-159)T and
We compared induction of manganese superoxide dismutase (MnSOD) by asbestos fibers and tumor necrosis factor alpha (TNF) using cultured human mesothelial cells. Transformed pleural mesothelial cells (MET 5A) were exposed for 48 h to amosite asbestos fibers (2 micrograms/cm2), to TNF (10 ng/ml), and
Both tumor necrosis factor-alpha (TNF) and ionizing radiation cause active-oxygen radical-mediated cell injuries and cell death. Thus cells treated by both TNF and radiation may suffer greater injuries than cells treated by either agent alone. On the other hand, TNF or radiation treatment can
We have demonstrated a dramatic induction of manganese superoxide dismutase (Mn-SOD) mRNA levels in response to lipopolysaccharide (LPS), interleukin-1, and tumor necrosis factor in pulmonary epithelial cells. These stimuli had no effect on the corresponding mRNA levels for the copper/zinc