نتایج جستجو برای: bacterial reverse mutation test

تعداد نتایج: 1363252  

Journal: :Journal of occupational health 2009
Keiko Asakura Hiroshi Satoh Momoko Chiba Masahide Okamoto Koji Serizawa Makiko Nakano Kazuyuki Omae

OBJECTIVES Many kinds of heavy metals are used in industry; thus, it is important for us to clarify their toxicity. For example, lead, which is a component of solder, is notorious for its neurotoxicity, and substitute materials have been sought for many years. Therefore, we examined the genotoxicity of lead and also those of metallic bismuth, indium, silver and antimony which are possible subst...

2010
André Morin Nicole Poirier David Préfontaine Martine Lacasse

Flue-curing is a post harvest conditioning process which strongly affects the tobacco leaf chemistry, and consequently the chemical properties of tobacco smoke. Several studies identified the major changes in tobacco chemistry occurring during flue-curing. It is not known how flue-curing contributes to changes in bioactivity of cigarette smoke condensate (CSC). In this study, tobacco leaves col...

Journal: :گوارش 0
abdorrahim masjedizadeh eskandar hajiani seydjalal hashemi aliakbar shaystaeh fatemeh jorfei

background: to estimate the prevalence of small intestine bacterial overgrowth (sibo) among patients with irritable bowel syndrome (ibs) versus healthy subjects with the use of a glucose breath test (gbt) in our geographical area. materials and methods: this study included a total of 80 consecutive patients; 40 with ibs based on rome iii criteria and 40 healthy controls with similar age and sex...

Journal: :journal of paramedical sciences 0
maliheh entezari islamic azad university, tehran medical branch,tehran,iran seyed javad hosseini islamic azad university, tehran medical branch,tehran,iran

currently cancer is considered as one of the main factors of mortality globally. many chemicals in our environment can cause genetic mutations and are potentially responsible for millions of cancer-related deaths. nowadays the scientists are looking for food materials which can potenthially prevent the cancer occurrence. the purpose of this research is to examine antimutagenicity and anticancer...

Journal: :Regulatory toxicology and pharmacology : RTP 2014
Antonella Di Sotto Francesca Maffei Patrizia Hrelia Silvia Di Giacomo Ester Pagano Francesca Borrelli Gabriela Mazzanti

α-Hexylcinnamaldehyde (HCA) and p-tert-butyl-alpha-methylhydrocinnamic aldehyde (BMHCA) are synthetic aldehydes, characterized by a typical floral scent, which makes them suitable to be used as fragrances in personal care (perfumes, creams, shampoos, etc.) and household products, and as flavouring additives in food and pharmaceutical industry. The aldehydic structure suggests the need for a saf...

2018
Mi Young Lee Yang-Chun Park Mirim Jin Eunseok Kim Jeong June Choi In Chul Jung

BACKGROUND So-ochim-tang-gamibang (SOCG) is a traditional Korean medicine frequently used for depression in the clinical field. In this study, we evaluated the potential genotoxicity of SOCG using three standard batteries of tests as part of a safety evaluation. METHODS SOCG was evaluated for potential genotoxic effects using the standard three tests recommended by the Ministry of Food and Dr...

E Fakhari , M Norouzi , SM Jazayeri ,

Background and Aims: lamivudine is amongst the antiviral for drug chronic hepatitis B treatment. During therapy with lamivudine, variants may emerge with YMDD mutation in the reverse transcriptase (RT) region of polymerase gene. This mutation might have a role in drug resistant for HBV. Materials and Methods: HBV DNA extraction from serum sample of 88 patients, were subjected to nested PCR for ...

2014
I-Chen Li Yen-Lien Chen Wan-Ping Chen Li-Ya Lee Yueh-Ting Tsai Chin-Chu Chen Chin-Shuh Chen

Hericium erinaceus (H. erinaceus) has a long history of usage in traditional Chinese medicine for the treatment of gastric disorders. Recently, it has become a well-established candidate in causing positive brain and nerve health-related activities by inducing nerve growth factor (NGF) from its bioactive ingredient, erinacine A. This active compound, which exists only in fermented mycelium but ...

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