4 hydroxyanisole/سرطان

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The effects of ascorbic acid and butylated hydroxyanisole in the chemoprevention of 1,2-dimethylhydrazine-induced large bowel neoplasms.

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Human large bowel neoplasia seems to be caused by environmental carcinogens. The experimental carcinogen, 1,2-dimethylhydrazine (DMH), must be oxidized in the body to have effect. The antioxidants, butylated hydroxyanisole (BHA) and ascorbic acid, were tested for efficacy in prevention of

Butylated hydroxyanisole and lung tumor development in A/J mice.

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A diet containing 0.75% butylated hydroxyanisole (BHA) did not enhance the development of lung tumors in A/J mice if fed for 8 weeks after administration of urethan, benzo[a]pyrene (B[a]P), or dimethylnitrosamine (DMN). Prefeeding animals with BHA partially protected animals against the tumorigenic

Butylated hydroxyanisole mechanistic data and risk assessment: conditional species-specific cytotoxicity, enhanced cell proliferation, and tumor promotion.

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Butylated hydroxyanisole (BHA), at high doses, has been found to induce forestomach squamous cell carcinomas in rodents, but not glandular cell or other types of neoplasms. BHA is not DNA-reactive, and the epigenetic mechanism of tumor formation involves cytotoxicity and enhanced cell proliferation,

Butylated hydroxyanisole inhibits the growth of HeLa cervical cancer cells via caspase-dependent apoptosis and GSH depletion.

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Butylated hydroxyanisole (BHA), a synthetic antioxidant is commonly used as a preservative in food and pharmaceutical agents. Despite the assumed low toxicity of BHA, it exerts a variety of effects on tissues and cell functions. In this study, the authors investigated the effects of BHA on the

Enhancement of the efficiency of photodynamic therapy of tumours by t-butyl-4-hydroxyanisole.

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The effects of photodynamic therapy (PDT) alone and in combination with 3(2)-t-butyl-4-hydroxyanisole (BHA) on Ehrlich ascites carcinoma (EAC) cells have been investigated. BHA, a widely used food antioxidant, administered to the cells prior to light exposure is found to cause

t-butyl-4-hydroxyanisole as an inhibitor of tumor cell respiration.

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The effect of t-butyl-4-hydroxyanisole (BHA), a widely used food antioxidant additive, on the culture growth, oxygen consumption, and redox state of some electron carriers of intact TA3 and 786A ascites tumor cells has been studied. BHA inhibited culture growth and respiration of these two tumor

Butylated hydroxyanisole blocks the occurrence of tumor associated macrophages in tobacco smoke carcinogen-induced lung tumorigenesis.

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Tumor-associated macrophages (TAMs) promote tumorigenesis because of their proangiogenic and immune-suppressive functions. Here, we report that butylated hydroxyanisole (BHA) blocks occurrence of tumor associated macrophages (TAMs) in tobacco smoke carcinogen-induced lung tumorigenesis. Continuous

The antiviral activity of tumour necrosis factor on herpes simplex virus type 1: role for a butylated hydroxyanisole sensitive factor.

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We have previously shown that specific antibodies (Mab 32/Ab 301) against tumour necrosis factor (TNF) enhance its antiviral activity in vaccinia virus-infected mice. In the present study, TNF alone was found to have antiviral activity against herpes simplex virus-1 (HSV-1). Antibody enhancement was

The treatment of animal tumours and their metastases with 4-hydroxyanisole.

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4-Hydroxyanisole (4-OHA) was administered to C57Bl/10J mice in which B16 melanoma or Lewis lung carcinoma had been implanted s.c. or i.m. The drug had the largest antitumour effect against B16 melanoma growing s.c. and a smaller antitumour effect against B16 melanoma or Lewis lung carcinoma growing

Butylated hydroxyanisole blocks the inhibitory effects of tumor necrosis factor-alpha on collagen production in human dermal fibroblasts.

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Tumor necrosis factor-alpha (TNF-alpha) has been demonstrated to selectively decrease the production of type I and type III collagens in human dermal fibroblasts. The effects of the commonly used food antioxidants, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), alpha-tocopherol,

Intake of butylated hydroxyanisole and butylated hydroxytoluene and stomach cancer risk: results from analyses in the Netherlands Cohort Study.

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Both carcinogenic and anticarcinogenic properties have been reported for the synthetic antioxidants butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT). The association between dietary intake of BHA and BHT and stomach cancer risk was investigated in the Netherlands Cohort Study (NLCS)

Tissue-specific induction patterns of cancer-protective enzymes in mice by tert-butyl-4-hydroxyanisole and related substituted phenols.

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Some of the anticarcinogenic effects of 2(3)-tert-butyl-4-hydroxyanisole (BHA) are attributable to the induction of detoxifying enzymes in the liver and peripheral tissues. This study was designed to determine if the tissue specificity of enzyme induction could be manipulated by structural

Changes in urine composition, bladder epithelial morphology, and DNA synthesis in male F344 rats in response to ingestion of bladder tumor promoters.

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An investigation of changes in urine composition, morphology of bladder epithelium, and levels of DNA synthesis following 4 or 8 weeks oral administration of bladder tumor promoters or analogs without promotion potential was performed. The sodium salts of L-ascorbate, o-phenylphenate, and

Peroxiredoxin II restrains DNA damage-induced death in cancer cells by positively regulating JNK-dependent DNA repair.

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The 2-Cys peroxiredoxins (Prx) belong to a family of antioxidant enzymes that detoxify reactive oxygen and nitrogen species and are distributed throughout the intracellular and extracellular compartments. However, the presence and role of 2-Cys Prxs in the nucleus have not been studied. This study

Effect of butylated hydroxyanisole, alpha-angelica lactone, and beta-naphthoflavone on benzo(alpha)pyrene:DNA adduct formation in vivo in the forestomach, lung, and liver of mice.

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The effects of alpha-angelica lactone (alpha-AL), butylated hydroxyanisole (BHA), and beta-naphthoflavone (beta-NF) on the amount of benzo(alpha)pyrene (BP) metabolite:DNA adducts formed in the forestomach, lung, and liver of ICR/Ha mice were investigated 48 hr after p.o. administration of BP. BP

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