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Stran 1 iz 467 rezultatov
Melatonin increases interleukin-1beta and decreases tumor necrosis factor alpha in the brain of mice infected with the Venezuelan equine encephalomyelitis virus.
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Prijava / prijava
The effect of melatonin (MLT) on the brain levels of tumor necrosis factor alpha (TNF-alpha) and interleukin-1beta (IL-1beta) in Venezuelan equine encephalomyelitis (VEE) virus infection was determined. Brain homogenates from mice inoculated with 10 LD50 of VEE virus, untreated or treated with 500
Circadian fluctuations of melatonin, tumor necrosis factor-alpha and its soluble receptors in the circulation of patients with advanced gastrointestinal cancer.
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Prijava / prijava
The objective of the study was to investigate the dynamic changes of melatonin (MLT), tumor necrosis factor alpha (TNFalpha), soluble TNFalpha receptors ( type I and type II) in serum of advanced cancer patients during 24 hours. The examined group consisted of 42 patients suffering from advanced
Glia-pinealocyte network: the paracrine modulation of melatonin synthesis by tumor necrosis factor (TNF).
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Prijava / prijava
The pineal gland, a circumventricular organ, plays an integrative role in defense responses. The injury-induced suppression of the pineal gland hormone, melatonin, which is triggered by darkness, allows the mounting of innate immune responses. We have previously shown that cultured pineal glands,
Mechanism of the inhibitory effect of melatonin on tumor necrosis factor production in vivo and in vitro.
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Melatonin is an antioxidant. Since other antioxidants inhibit the production of tumor necrosis factor (TNF) induced by lipopolysaccharide, we investigated its effect on TNF production in vivo and in vitro and on lethality associated with endotoxic shock. Administration of melatonin to mice (5 mg/kg,
Melatonin is involved in the apoptosis and necrosis of pancreatic cancer cell line SW-1990 via modulating of Bcl-2/Bax balance.
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Prijava / prijava
Melatonin influences a number of physiological processes and is believed to play an antitumoral role in several types of cancers, but its impact on pancreatic cancer is not fully clarified. The growth inhibitory effect of melatonin on pancreatic cancer cell line SW-1990 was detected in vitro and in
Protective effect of melatonin on random pattern skin flap necrosis in pinealectomized rat.
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Prijava / prijava
Random pattern skin flaps are still widely used in plastic surgery. However, necrosis in the distal portion resulting from ischemia is a serious problem, increasing the cost of treatment and hospitalization. Free oxygen radicals and increased neutrophil accumulation play an important role in tissue
Melatonin reduces apoptosis and necrosis induced by ischemia/reperfusion injury of the pancreas.
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The pancreas is highly susceptible to the oxidative stress induced by ischemia/reperfusion (IR) injury leading to the generation of acute pancreatitis. Melatonin has been shown to be useful in the prevention of the damage by ischemia-reperfusion in liver, brain, myocardium, gut and kidney. The aim
Melatonin ameliorates doxorubicin-induced skin necrosis in rats.
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Doxorubicin (DXR), a highly effective chemotherapeutic agent, causes serious injury when extravasated. The injury can sometimes result in skin necrosis and ulceration, requiring surgery. The detrimental effect of DXR on the antioxidant system via free oxygen radicals is one of the mechanisms
Effect of exogenous melatonin on hepatic energetic status during ischemia/reperfusion: possible role of tumor necrosis factor-alpha and nitric oxide.
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BACKGROUND
This study was designed to determine if the very potent antioxidant melatonin is able to reduce organ damage and improve energetic status in an in situ liver ischemia/reperfusion model.
METHODS
Total hepatic ischemia was induced in rats by occlusion of the hepatic artery, portal vein, and
Role of the pineal gland in the control of macrophage functions and its possible implication in cancer: a study of interactions between tumor necrosis factor-alpha and the pineal hormone melatonin.
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Prijava / prijava
Recent studies have shown the existence of reciprocal links between cytokine activity and immunomodulating neurohormones or neuropeptides. In particular, the pineal hormone melatonin (MLT) appears to influence IL-2 activity in cancer. The present study was performed to evaluate which interaction
Inhibition of iron overload-induced apoptosis and necrosis of bone marrow mesenchymal stem cells by melatonin.
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Iron overload induces severe damage to several vital organs such as the liver, heart and bone, and thus contributes to the dysfunction of these organs. The aim of this study is to investigate whether iron overload causes the apoptosis and necrosis of bone marrow mesenchymal stem cells (BMSCs) and
Critical role of glutathione in melatonin enhancement of tumor necrosis factor and ionizing radiation-induced apoptosis in prostate cancer cells in vitro.
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Prijava / prijava
The role of antioxidants in reducing cancer initiation and progression has been highlighted in recent years. Not only antioxidants limit cancer cell growth but also, in some situations, they promote the effectiveness of conventional treatments. Melatonin, an endogenously synthesized antioxidant,
Melatonin Rescued Reactive Oxygen Species-Impaired Osteogenesis of Human Bone Marrow Mesenchymal Stem Cells in the Presence of Tumor Necrosis Factor-Alpha.
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Prijava / prijava
Accumulation of reactive oxygen species (ROS), which can be induced by inflammatory cytokines, such as tumor necrosis factor-alpha (TNF-α), can significantly inhibit the osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). This process can contribute to the imbalance of
Melatonin reversed tumor necrosis factor-alpha-inhibited osteogenesis of human mesenchymal stem cells by stabilizing SMAD1 protein.
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Tumor necrosis factor-alpha (TNFα) plays a pivotal role in inflammation-related osteoporosis through the promotion of bone resorption and suppression of bone formation. Numerous drugs have been produced to treat osteoporosis by inhibiting bone resorption, but they offer few benefits to bone
Daily light and darkness onset and circadian rhythms metabolically synchronize hematopoietic stem cell differentiation and maintenance: The role of bone marrow norepinephrine, tumor necrosis factor, and melatonin cycles.
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Hematopoietic stem and progenitor cells (HSPCs) are essential for daily mature blood cell production, host immunity, and osteoclast-mediated bone turnover. The timing at which stem cells give rise to mature blood and immune cells while maintaining the bone marrow (BM) reservoir of undifferentiated
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