benzyl acetate/carcinogenesis

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NTP Toxicology and Carcinogenesis Studies of Benzyl Acetate (CAS No. 140-11-4) in F344/N Rats and B6C3F1 Mice (Gavage Studies).

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Benzyl acetate, a water-white liquid with a pear-like odor, is a natural constituent of several essential oils and flower absolutes extracted from jasmine, hyacinth, gardenia, tuberose, ylang-ylang, cananga, and neroli. Commercial benzyl acetate, a liquid prepared synthetically from benzyl chloride,

Evaluation of promotion of pancreatic carcinogenesis in rats by benzyl acetate.

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Benzyl acetate was found to induce liver tumours and gastric squamous neoplasms in mice in a chronic bioassay conducted through the National Toxicology Program. An increased incidence of acinar cell adenomas of the pancreas of F344 rats was noted in the bioassay, but the significance of these

NTP Toxicology and Carcinogenesis Studies of Benzyl Acetate (CAS No. 140-11-4) in F344/N Rats and B6C3F1 Mice Feed Studies).

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Benzyl acetate is used as a flavoring agent in foods, as a fragrance in soaps and perfumes, as a solvent for cellulose acetate and nitrate, and as a component of printing inks and varnish removers. The NTP previously studied the toxicology and carcinogenicity of this chemical in F344/N rats and

Benzyl acetate: from mutagenic carcinogen to non-mutagenic non-carcinogenic in 7 years?

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Benzyl acetate carcinogenicity, metabolism, and disposition in Fischer 344 rats and B6C3F1 mice.

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Carcinogenesis studies of benzyl acetate (a fragrance and flavoring agent) were conducted in F344 rats and B6C3F1 mice. The chemical was given in corn oil by gavage once daily, 5 days/week for 103 weeks, to groups of 50 animals of each sex and species. For rats the doses were 0, 250, and 500 mg/kg

Re-evaluation of chromosomal aberration induction on nine mouse lymphoma assay "unique positive' NTP carcinogens.

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In a collaborative study organized under the JEMS MMS, nine mouse lymphoma assay (MLA) "unique positive' NTP rodent carcinogens were re-evaluated by an in vitro chromosomal aberration assay using Chinese hamster lung fibroblast cells (CHL/IU). Six of nine chemicals induced chromosomal aberrations;

Effects of corn oil and benzyl acetate on number and size of azaserine-induced foci in the pancreas of LEW and F344 rats.

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The response of LEW and F344 strain rats to the pancreatic carcinogen azaserine was compared using the size and number of azaserine-induced acidophilic acinar cell foci and nodules as parameters in a 4-month experiment. A second experiment compared the effect of corn oil intake by gavage and dietary

A core in vitro genotoxicity battery comprising the Ames test plus the in vitro micronucleus test is sufficient to detect rodent carcinogens and in vivo genotoxins.

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In vitro genotoxicity testing needs to include tests in both bacterial and mammalian cells, and be able to detect gene mutations, chromosomal damage and aneuploidy. This may be achieved by a combination of the Ames test (detects gene mutations) and the in vitro micronucleus test (MNvit), since the

Measurement of unscheduled DNA synthesis and S-phase synthesis in rodent hepatocytes following in vivo treatment: testing of 24 compounds.

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The in vivo-in vitro hepatocyte DNA repair assay has been shown to be useful for studying genotoxic hepatocarcinogens. In addition, measurement of S-phase synthesis (SPS) provides an indirect indicator of hepatocellular proliferation, which may be an important mechanism in rodent carcinogenesis.

Comparative investigation of multiple organs of mice and rats in the comet assay.

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Mice and/or rats are usually used to detect chemical carcinogenicity and it has been known that there are species differences in carcinogenicity. To know whether there are species difference in genotoxicity, we conducted comparative investigation of multiple organs of mice and rats in the comet

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