4 hydroxyanisole/kukurica siata

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Effect of butylated hydroxyanisole on the level of DNA adduction by aristolochic acid in the rat forestomach and liver.

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Administration of butylated hydroxyanisole (BHA) orally at either 0.5 g or 1 g/kg daily for 14 days to rats did not produce any DNA adducts in the forestomach as measured by the 32P-postlabeling method using (1) limiting concentrations of 32P-ATP; (2) nuclease P1 enhancement; or (3) butanol

Short-term pathological and proliferative effects of butylated hydroxyanisole and other phenolic antioxidants in the forestomach of Fischer 344 rats.

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Food grade butylated hydroxyanisole (BHA) when incorporated in the diet and fed to male Fischer 344 rats for 9 or 27 days induced proliferative squamous epithelial changes in the lesser curvature of the forestomach proximate to the glandular stomach. These changes were assessed histopathologically

An 85-day study of butylated hydroxyanisole in the cynomolgus monkey.

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Groups of 8 cynomolgus monkeys (Macaca fascicularis) were given 500, 125 and 0 mg/kg body wt butylated hydroxyanisole (BHA) by gavage in corn oil 5 times/week for 20 days, after which the high dose was halved. No significant adverse clinical signs nor abnormal fibroscopic observations were noted

Disposition of single oral doses of butylated hydroxyanisole in man and rat.

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The kinetics and metabolism of butylated hydroxyanisole (BHA) have been compared between man and rats. Oral doses of 2, 20 or 200 mg BHA/kg body weight were administered to male Wistar rats and a single oral dose of 0.5 mg/kg body weight was administered to human volunteers (non-smoking males).

Effects of butylated hydroxyanisole on the development and functions of reproductive system in rats.

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Butylated hydroxyanisol (BHA) is a widely used antioxidant for long preservation of food products, cosmetics and pharmaceuticals. Although BHA is generally recognized as safe, it is classified as a suspected endocrine-disrupting compound. We investigated the effects of BHA on reproductive function

Investigations of the genotoxicity and cell proliferative activity of dichlorvos in mouse forestomach.

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This study investigated the possible mechanism by which dichlorvos may have caused forestomach tumours in mice in a chronic corn oil gavage cancer bioassay [NTP (1989) Toxicology and carcinogenesis studies of dichlorvos in F344/N rats and B6C3F1 mice (gavage studies). National Toxicology Program

Influence of dosing vehicles on the preclinical pharmacokinetics of phenolic antioxidants.

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Phenolic antioxidants, such as butylated hydroxyanisole (BHA) and propyl gallate (PG), have demonstrated paradoxical cancer initiating and preventive actions in animals. Studies examining the disposition and biological effects of these agents have used solutions in ethanol-saline, PEG400-saline,

DNA damage in forestomach epithelium from male F344 rats following oral administration of tert-butylquinone, one of the forestomach metabolites of 3-BHA.

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DNA damage in the forestomach epithelium of male F344 rats was tested by alkaline elution assay following oral administration of 3-tert-butyl-4-hydroxyanisole (3-BHA) and its free metabolites. Although 1% 3-BHA and 0.001% tert-butylhydroquinone (BHQ) caused no detectable DNA damage, a

Modifying effects of various chemicals on tumor development in a rat wide-spectrum organ carcinogenesis model.

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The efficacy of a wide-spectrum organ carcinogenesis model for detection of modification potential of exogenous agents was investigated in F344 male rats. Groups of animals were sequentially injected with N-bis(2-hydroxypropyl)nitrosamine (1000 mg/kg body weight, i.p., in saline, twice in week 1),

Endrin-induced histopathological changes and lipid peroxidation in livers and kidneys of rats, mice, guinea pigs and hamsters.

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Endrin toxicity may be due to an oxidative stress associated with increased lipid peroxidation, decreased glutathione content, and inhibition of glutathione peroxidase activity. Extensive interspecies variability exists in sensitivity towards endrin. Therefore, histopathological changes and lipid

Vitamin E, antioxidants and lipid peroxidation in experimental atherosclerosis of rabbits.

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The purpose of this study was to evaluate the effects of large amounts of dietary vitamin E and butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) in rabbits fed a low-cholesterol, atherogenic diet, and to seek for evidence of lipid peroxidation in the atherosclerotic lesions. Rabbits

Systematic identification of antioxidants in lards, shortenings, and vegetable oils by thin layer chromatography.

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A simple and reliable method is described for rapid identification of ascorbyl palmitate, butylated hydroxyanisole, butylated hydroxytoluene, ethoxyquin, gallates (lauryl, octyl, propyl), nordihydroguaiaretic acid, 3,3'-thiodipropionic acid, tocopherol, t-butylhydroquinone, and

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