dicumarol/necrosis

OBJECTIVE In a preliminary study, NAD(P)H:quinone oxidoreductase 1 (NQO1) was found to be highly expressed in cultured human aortic smooth muscle cells (HASMC) and dicumarol, a NQO1 inhibitor and a coumarin-derived natural anticoagulant, suppressed tumor necrosis factor (TNF)-alpha-induced HASMC

Mitomycin C-induced cell death in mouse lens epithelial cells.

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The mode of action of mitomycin C (MMC)-induced cell death in lens epithelia was investigated using cell culture system. The cytotoxicity of MMC on alpha-TN4 mouse lens epithelial cells (LECs) was measured by using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT)-based assay. To

Induction of 8-hydroxydeoxyguanosine but not initiation of carcinogenesis by redox enzyme modulations with or without menadione in rat liver.

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Inducibility of oxidative stress in rat liver in vivo by menadione-associated redox cycling activation under redox enzyme modulating conditions was examined by monitoring hepatocyte injury and 8-hydroxydeoxyguanosine (8-OHdG) levels of liver DNA. In addition, the treatment-associated liver tumor

Effects of oxidative stress induced by redox-enzyme modulation on rat hepatocarcinogenesis.

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Inducibility of oxidative stress by menadione-associated redox cycling activation under redox-enzyme modulated conditions was examined in F344 male rat liver, by monitoring 8-hydroxydeoxyguanosine (8-OHdG) levels in DNA and hepatocyte injury. Further, the treatment-associated liver tumor-initiating,

Quinton-Scribner arteriovenous shunts for hemodialysis. A review of 6.5 years' experience.

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Quinton-Scribner shunts have been used as a reliable access to the blood-stream in 56 patients treated with intermittent hemodialysis in the years 1965-71. The mean age of 29 men and 27 women was 39 years. Two hundred and thirty-two cannulae showed a mean survival time of 11.2 months for 103

The pharmacology of oral anticoagulants: implications for therapy.

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All oral anticoagulants act by producing a functional deficiency of vitamin K, thereby impairing the normal synthesis of factors II, VII, IX and X. All, except dicumarol, are well absorbed after oral administration. They are highly protein bound and are mainly metabolized in the liver. A number of

Intracellular reduction of coenzyme Q homologues with a short isoprenoid side chain induces apoptosis of HeLa cells.

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Coenzyme Q (CoQ) is an essential factor of the mitochondrial respiratory chain. CoQ homologues with different lengths of the isoprenoid side chain are widely distributed in nature, but little is known about the relationship between the isoprenoid side chain length and biological function; therefore,

Activation of JNK and xanthine oxidase by TNF-alpha impairs nitric oxide-mediated dilation of coronary arterioles.

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Elevated levels of tumor necrosis factor-alpha (TNF), a proinflammatory cytokine, are associated with coronary artery disease. However, it is unclear whether vasodilator function of coronary resistance arterioles is susceptible to TNF. Herein, we examined whether TNF can affect endothelium-dependent

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