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acetic acid/nekrose
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Rat tumor response to the vascular-disrupting agent 5,6-dimethylxanthenone-4-acetic acid as measured by dynamic contrast-enhanced magnetic resonance imaging, plasma 5-hydroxyindoleacetic acid levels, and tumor necrosis.
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The dose-dependent effects of 5,6-dimethylxanthenone-4-acetic acid (DMXAA) on rat GH3 prolactinomas were investigated in vivo. Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) was used to assess tumor blood flow/permeability pretreatment and 24 hours posttreatment with 0, 100, 200, or
Persistent retention of acetic acid is associated with complete tumour necrosis in patients with hepatocellular carcinoma undergoing percutaneous acetic acid injection.
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BACKGROUND
Ultrasound (US)-guided percutaneous acetic acid injection therapy (PAIT) is effective for patients with hepatocellular carcinoma (HCC). This study aimed to determine the occurrence and predictive value of persistent intra-tumoral retention of acetic acid after PAIT.
METHODS
We
Massive noninflammatory periportal liver necrosis following concentrated acetic acid ingestion.
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In a fatal occurrence of massive liver necrosis following ingestion of concentrated (90%) acetic acid, the patient showed evidence of hemolysis, disseminated intravascular coagulation, and liver dysfunction at only 45 minutes after exposure. With refractory to vigorous supportive care, the patient s
Flavone acetic acid potentiates the induction of endothelial procoagulant activity by tumour necrosis factor.
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Treatment of human umbilical vein endothelial cells with flavone acetic acid (FAA) at 800 micrograms/ml for 4 h resulted in a 3-11-fold increase in procoagulant activity. This increase was due to enhanced tissue factor expression on the endothelial cell surface, as evidenced by the blocking of the
In vivo effects of tumor necrosis factor-alpha or flavone acetic acid in combination with doxorubicin on multidrug-resistant B16 melanoma.
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Having observed that tumor necrosis factor (TNF)-alpha and doxorubicin (DXR) produce a synergistic inhibition of melanoma B16 and also of its multidrug resistant (MDR) variant in vitro, we tested whether this interaction would occur in vivo as well. C57BL/6 mice with s.c. tumors were treated with
Gossypol Acetic Acid Prevents Oxidative Stress-Induced Retinal Pigment Epithelial Necrosis by Regulating the FoxO3/Sestrin2 Pathway.
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The late stage of dry age-related macular degeneration (AMD), or geographic atrophy (GA), is characterized by extensive retinal pigment epithelial (RPE) cell death, and a cure is not available currently. We have recently demonstrated that RPE cells die from necrosis in response to oxidative stress,
Flavone acetic acid and 5,6-dimethylxanthenone-4-acetic acid: relationship between plasma nitrate elevation and the induction of tumour necrosis.
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Antitumour agents such as flavone acetic acid, xanthenone acetic acid (XAA), 5,6-dimethylxanthenone-4-acetic acid and tumour necrosis factor-alpha, following single dose administration to mice with colon 38 adenocarcinomas, induce tumour haemorrhagic necrosis and an elevation in plasma nitrate. The
Tumour necrosis factor-alpha plasma levels after flavone acetic acid administration in man and mouse.
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Flavone acetic acid (FAA) is a synthetic flavonoid with a remarkable spectrum of anticancer activities in mouse tumours, but with no anticancer activity in humans. The mechanism of action of this drug is complex and involves a tumour vasculature action similar to the effects of tumour necrosis
Induction of tumor necrosis factor-alpha messenger RNA in human and murine cells by the flavone acetic acid analogue 5,6-dimethylxanthenone-4-acetic acid (NSC 640488).
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The investigational antitumor agent, 5,6-dimethylxanthenone-4-acetic acid (5,6-MeXAA; NSC 640488) induced greater expression of tumor necrosis factor-alpha (TNF-alpha) mRNA in murine spleen cells in vivo at its optimal dose of 27.5 mg/kg than flavone acetic acid (FAA; NSC 347512) at its optimal dose
The effect of 5,6-dimethylxanthenone-4-acetic acid on tumour necrosis factor production by human immune cells.
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5,6-dimethylxanthenone-4-acetic acid (5,6-MeXAA) is a potent anti-tumour agent which is undergoing early clinical evaluation. It was developed as an improved analogue of flavone acetic acid (FAA) which failed in clinical trial although it had impressive anti-tumour activity in mice. It has been
Induction of tumour necrosis factor-alpha by single and repeated doses of the antitumour agent 5,6-dimethylxanthenone-4-acetic acid.
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5,6-Dimethylxanthenone-4-acetic acid (DMXAA), a low-molecular-weight biological response modifier scheduled for clinical evaluation, induced synthesis of tumour necrosis factor-alpha (TNF-alpha) in serum of mice, with maximal activity being observed at 2-3 h after administration. At a dose of 27.5
Effect of thalidomide on tumour necrosis factor production and anti-tumour activity induced by 5,6-dimethylxanthenone-4-acetic acid.
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The investigational anti-tumour agent, 5,6-dimethylxanthenone-4-acetic acid (5,6-MeXAA), an analogue of flavone acetic acid (FAA), has been scheduled for clinical evaluation. Like FAA, 5,6-MeXAA exhibits excellent experimental anti-tumour activity and is an efficient inducer of cytokines in mice. We
Production of tumour necrosis factor-alpha by cultured human peripheral blood leucocytes in response to the anti-tumour agent 5,6-dimethylxanthenone-4-acetic acid (NSC 640488).
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The investigative anti-tumour agent 5,6-dimethylxanthenonone-4-acetic acid (DMXAA, NSC 640488), developed in this laboratory as an improved analogue of flavone acetic acid (FAA, NSC 347512), is currently in clinical trial. The ability of DMXAA to up-regulate tumour necrosis factor (TNF) mRNA and
Role of T cells and tumour necrosis factor in antitumour activity and toxicity of flavone acetic acid.
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To investigate the importance of natural killer (NK) and T cells in the inhibition of tumour growth by flavone acetic acid (FAA), colon 26 murine carcinoma was grafted subcutaneously in euthymic and athymic mice. FAA was active in euthymic but not in athymic mice (ratio between tumour weight in
Suppression of serum tumour necrosis factor-alpha by thalidomide does not lead to reversal of tumour vascular collapse and anti-tumour activity of 5,6-dimethylxanthenone-4-acetic acid.
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The antitumour agent 5,6-dimethylxanthenone-4-acetic acid (DMXAA), developed in this laboratory as a potent analogue of flavone acetic acid (FAA), has a novel antitumour action involving both immune and vascular components. DMXAA induces the synthesis of tumour necrossi factor-alpha (TNF) and it has
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