Results 21 to 30 of about 77,097 (309)

Oxidative Stress in the Carcinogenicity of Chemical Carcinogens [PDF]

open access: yesCancers, 2013
This review highlights several in vivo studies utilizing non-genotoxic and genotoxic chemical carcinogens, and the mechanisms of their high and low dose carcinogenicities with respect to formation of oxidative stress. Here, we survey the examples and discuss possible mechanisms of hormetic effects with cytochrome P450 inducers, such as phenobarbital, a-
Anna Kakehashi   +3 more
openaire   +2 more sources

Forecasting the environmental effects of air pollution with landfill gas in residential areas

open access: yesRUDN Journal of Ecology and Life Safety, 2018
In the article the prediction of ecological consequences of contamination of components of the landfill gas air to a residential building, located on the territory close to the landfill. A method for calculating the dispersion of landfill gas taking into
Arthur Valerevich Sauts
doaj   +1 more source

Studies on an efficient method for determining 3,3’-dimethylbenzidine in the workplace air

open access: yesMedycyna Pracy, 2016
Background: 3,3’-Dimethylbenzidene (DMB) is a substance classified into the group of carcinogens. The value of maximum admissible concentration for this substance in the workplace air is not specified in Poland.
Joanna Kowalska, Anna Jeżewska
doaj   +1 more source

Changes in miR-124-1, miR-212, miR-132, miR-134, and miR-155 Expression Patterns after 7,12-Dimethylbenz(a)anthracene Treatment in CBA/Ca Mice

open access: yesCells, 2022
Specific gene and miRNA expression patterns are potential early biomarkers of harmful environmental carcinogen exposures. The aim of our research was to develop an assay panel by using several miRNAs for the rapid screening of potential carcinogens.
Andras Tomesz   +13 more
doaj   +1 more source

17Beta-estradiol modulates gastroduodenal preneoplastic alterations in rats exposed to the carcinogen N-methyl-N'-nitro-nitrosoguanidine [PDF]

open access: yes, 1999
Gastric cancers are a significant cause of morbidity worldwide. Epidemiological studies and animal models show that males have higher incidences of gastric cancers compared with females, suggesting that sex hormones may modulate gastric cancer risk.
Reyher, K K   +4 more
core   +1 more source

NIOSH chemical carcinogen policy [PDF]

open access: yes
Occupational exposure to chemical carcinogens still presents risks to many in the workforce. The burden from exposure to occupational carcinogens on workers, their families, employers, and the nation is difficult to measure.

core   +3 more sources

The Carcinogenicity of Chromium [PDF]

open access: yesEnvironmental Health Perspectives, 1981
The carcinogenicity of chromium compounds is reviewed with specific attention to the gaps in knowledge for risk estimation and research needs. The most important problems at present are whether trivalent chromium compounds cause cancer, and whether there is a difference in cancer causing effects between the soluble and the slightly soluble hexavalent ...
openaire   +2 more sources

A priority list of occupational carcinogenic agents for preventative action in Australia

open access: yesAustralian and New Zealand Journal of Public Health, 2012
Objective: To develop a list of carcinogens to guide decisions on priorities for preventive action in Australian workplaces. Approach: The following criteria provided the assessment framework to establish a list of priority carcinogens: evidence of ...
Renae C. Fernandez   +6 more
doaj   +1 more source

Cytochromes P450 are Expressed in Proliferating Cells in Barrett's Metaplasia

open access: yesNeoplasia: An International Journal for Oncology Research, 1999
The expression of cytochromes P450 (CYP) in Barrett's esophagus and esophageal squamous mucosa was investigated. Esophagectomy specimens from 23 patients were examined for CYP expression of CYP1A2, CYP3A4, CYP2C9/10, and CYP2E1 by immunohistochemical ...
Steven J. Hughes   +7 more
doaj   +1 more source

The Chemopreventive Effects of Polyphenols and Coffee, Based upon a DMBA Mouse Model with microRNA and mTOR Gene Expression Biomarkers

open access: yesCells, 2022
Polyphenols are capable of decreasing cancer risk. We examined the chemopreventive effects of a green tea (Camellia sinensis) extract, polyphenol extract (a mixture of blackberry (Rubus fruticosus), blackcurrants (Ribes nigrum), and added resveratrol ...
Richard Molnar   +13 more
doaj   +1 more source

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