نتایج جستجو برای: mutagenicity tests

تعداد نتایج: 339246  

Journal: :Environmental Health Perspectives 1983
C Ramel

The Salmonella microsomal assay has become an indispensible tool for the screening of mutagens and carcinogens, particularly when a large number of samples have to be tested, as in the present context for the screening of air pollution. However, for a more definite identification of potential carcinogens, a verification of the results from bacterial tests has to be performed with a battery of o...

Journal: :Molecular nutrition & food research 2006
Ka-Wing Cheng Feng Chen Mingfu Wang

Heterocyclic amines (HAs) occur at the ppb range in foods. Most of them demonstrate potent mutagenicity in bacteria mutagenicity test, and some of them have been classified by the International Agency for Research on Cancer as probable/possible human carcinogens. Their capability of formation even during ordinary cooking practices implies frequent exposure by the general public. Over the past 3...

Journal: :Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association 2016
Samuel M Cohen Shoji Fukushima Nigel J Gooderham F Peter Guengerich Stephen S Hecht Ivonne M C M Rietjens Robert L Smith Maria Bastaki Christie L Harman Margaret M McGowen Sean V Taylor

p-Mentha-1,8-dien-7-al is a naturally occurring cyclic alpha,beta-unsaturated aldehyde that is used as a flavoring substance throughout the world. Due to the chemical structure and the potential DNA reactivity of the alpha,beta-unsaturated carbonyl moiety, a battery of genotoxicity assays was requested by the European Food Safety Authority. Previous genotoxicity studies on the substance gave mi...

Journal: :Environmental toxicology and chemistry 2004
Andrew Whitehead Kathryn M Kuivila James L Orlando Sergey Kotelevtsev Susan L Anderson

The primary objective of the present study was to test whether agricultural chemical runoff was associated with in-stream genotoxicity in native fish. Using Sacramento sucker (Catostomus occidentalis), we combined field-caging experiments in an agriculturally dominated watershed with controlled laboratory exposures to field-collected water samples, and we coupled genotoxicity biomarker measurem...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2015
Farzaneh Alebouyeh Sepideh Arbabi Bidgoli Parisa Ziarati Masoomeh Heshmati Mahnaz Qomi

Diseases related to water impurities may present as major public health burdens. The present study aimed to assess the mutagenicity of drinking water from different zones of Tehran, and evaluate possible health risks through making tea with tea bags, by Ames mutagenicity test using TA 100, TA 98 and YG1029 strains. For this purpose, 450 water samples were collected over the period of July to De...

Journal: :Chemical research in toxicology 2006
Andreas Rothfuss Thomas Steger-Hartmann Nikolaus Heinrich Jörg Wichard

We report on the generation of computer-based models for the prediction of the chromosome-damaging potential of chemicals as assessed in the in vitro chromosome aberration (CA) test. On the basis of publicly available CA-test results of more than 650 chemical substances, half of which are drug-like compounds, we generated two different computational models. The first model was realized using th...

Journal: :Environmental Health Perspectives 1977
J J Clary

A review of the toxicity of 1,3-dichlorobutene-2 (1,3-DCB), 1,4-dichlorobutene-2 (1,4-dcb), and 2-chlorobutadiene, 1,3 (beta-chloroprene) was undertaken with an emphasis on assessing the hazards of these materials in the industrial situation. 1,3-DCB is a by-product of beta-chloroprene from the acetylene route, with 1,4-DCB is an intermediate in the production of beta-chloroprene from the butad...

Journal: :Mutagenesis 2008
Nicole Verhofstad Joost O Linschooten Jan van Benthem Yuri E Dubrova Harry van Steeg Frederik J van Schooten Roger W L Godschalk

Germ line mutations resulting from chemical or radiation exposure are a particular problem in toxicology as they affect not only the exposed generation but also an infinite number of generations thereafter. Established methods to show that these mutations occur in an F1 or subsequent population require the use of a large number of progeny for statistical significance. Consequently, many thousan...

Masoomeh Heshmati Sepideh Arbabi Bidgoli, Shahrzad Sadri

Waterpipe smoking has become a global youth trend especially in the Middle East countries and Iran . The aim of this study was to determine the mutagenic effects of three most popular flavored tobaccos by four different salmonella typhimurium strains and compare the possible mutagenic effects of the test samples. Ames mutagenicity assessment was conducted according to the OECD guideline using T...

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