scholarly journals Activation of the Aryl Hydrocarbon Receptor by Some Vegetable Constituents Determined Using in Vitro Reporter Gene Assay

2003 ◽  
Vol 26 (4) ◽  
pp. 532-539 ◽  
Author(s):  
Yoshiaki Amakura ◽  
Tomoaki Tsutsumi ◽  
Masafumi Nakamura ◽  
Hiroko Kitagawa ◽  
Junko Fujino ◽  
...  
Keyword(s):  
Aryl Hydrocarbon Receptor ◽  
Reporter Gene ◽  
Reporter Gene Assay ◽  
Aryl Hydrocarbon ◽  
Gene Assay

scholarly journals In vitro bioanalytical assessment of toxicity of wetland samples from Spanish Mediterranean coastline

2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Alberto Celma ◽  
Geeta Mandava ◽  
Agneta Oskarsson ◽  
Juan Vicente Sancho ◽  
Lubertus Bijlsma ◽  
...  
Keyword(s):  
Water Quality ◽  
Reporter Gene ◽  
Biological Activities ◽  
Reporter Gene Assay ◽  
Water Bodies ◽  
Good Tool ◽  
Adverse Health Effects ◽  
Aryl Hydrocarbon ◽  
Gene Assay

Abstract Background Fresh water bodies represent less than 1% of overall amount of water on earth and ensuring their quality and sustainability is pivotal. Although several campaigns have been performed to monitor the occurrence of micropollutants by means of chemical analysis, this might not cover the whole set of chemicals present in the sample nor the potential toxic effects of mixtures of natural and anthropogenic chemicals. In this sense, by selecting relevant toxicity endpoints when performing in vitro bioanalysis, effect-based methodologies can be of help to perform a comprehensive assessment of water quality and reveal biological activities relevant to adverse health effects. However, no prior bioanalytical study was performed in wetland water samples from the Spanish Mediterranean coastline. Methods Eleven samples from relevant water bodies from the Spanish Mediterranean coastline were collected to monitor water quality on 8 toxicity endpoints. Aryl hydrocarbon receptor (AhR), androgenicity (AR+ and AR−), estrogenicity (ER+ and ER−), oxidative stress response (Nrf2) and vitamin D receptor (VDR+ and VDR−) reporter gene assays were evaluated. Results AhR was the reporter gene assay showing a more frequent response over the set of samples (activated by 9 out of 11 samples), with TCDD-eq in the range 7.7–22.2 pM. For AR, ER and VDR assays sporadic activations were observed. Moreover, no activity was observed on the Nrf2 reporter gene assay. Wastewater and street runaway streams from Valencia could be responsible for enhanced activities in one of the water inputs in the Natural Park ‘L’Albufera’. Conclusions Water quality of relevant wetlands from the Spanish Mediterranean coastline has been evaluated. The utilization of a panel of 5 different bioassays to cover for different toxicity endpoints has demonstrated to be a good tool to assess water quality.

scholarly journals Detection of Aryl Hydrocarbon Receptor Activation by Some Chemicals in Food Using a Reporter Gene Assay

Foods ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 15 ◽  
Author(s):  
Yoshiaki Amakura ◽  
Tomoaki Tsutsumi ◽  
Morio Yoshimura ◽  
Masafumi Nakamura ◽  
Hiroshi Handa ◽  
...  
Keyword(s):  
Aryl Hydrocarbon Receptor ◽  
Reporter Gene ◽  
Receptor Activation ◽  
Reporter Gene Assay ◽  
Aryl Hydrocarbon ◽  
Gene Assay

scholarly journals Establishment of a Rat Hepatic Cell Line, KanR2-XL8, for a Reporter Gene Assay of Aryl Hydrocarbon Receptor Ligands

2004 ◽  
Vol 50 (5) ◽  
pp. 530-536 ◽  
Author(s):  
Masashi Sekimoto ◽  
Miho Iwamoto ◽  
Shoji Miyajima ◽  
Kiyomitsu Nemoto ◽  
Masakuni Degawa
Keyword(s):  
Aryl Hydrocarbon Receptor ◽  
Cell Line ◽  
Reporter Gene ◽  
Reporter Gene Assay ◽  
Hepatic Cell ◽  
Receptor Ligands ◽  
Aryl Hydrocarbon ◽  
Hepatic Cell Line ◽  
Gene Assay

Evaluation of estrogenic activities of pesticides using an in vitro reporter gene assay

2005 ◽  
Vol 15 (4) ◽  
pp. 271-280 ◽  
Author(s):  
Mihoko Kojima ◽  
Kenji Fukunaga * ◽  
Mari Sasaki ◽  
Masafumi Nakamura ◽  
Motohiro Tsuji ◽  
...  
Keyword(s):  
Reporter Gene ◽  
Reporter Gene Assay ◽  
Gene Assay

Evaluation of Estrogenic Activity of Wastewater: Comparison Among In Vitro ERα Reporter Gene Assay, In Vivo Vitellogenin Induction, and Chemical Analysis

2015 ◽  
Vol 49 (10) ◽  
pp. 6319-6326 ◽  
Author(s):  
Masaru Ihara ◽  
Tomokazu Kitamura ◽  
Vimal Kumar ◽  
Chang-Beom Park ◽  
Mariko O. Ihara ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Reporter Gene ◽  
Estrogenic Activity ◽  
Reporter Gene Assay ◽  
Gene Assay

In vitro Estrogenicity of Resin Composites

2004 ◽  
Vol 83 (3) ◽  
pp. 222-226 ◽  
Author(s):  
H. Wada ◽  
H. Tarumi ◽  
S. Imazato ◽  
M. Narimatsu ◽  
S. Ebisu
Keyword(s):  
Bisphenol A ◽  
Reporter Gene ◽  
Estrogenic Activity ◽  
Reporter Gene Assay ◽  
Resin Composites ◽  
Minimum Concentration ◽  
Tert Butyl ◽  
Gene Assay

Previously, we have reported that sealants incorporating bisphenol A dimethacrylate showed estrogenicity by a reporter gene assay. This study tested the hypothesis that commercial composites, which contain various monomers and additives, exhibit estrogenic activity in vitro. The estrogenic activities of eluates obtained from 24 composites and 18 chemicals identified from the composites tested were examined with the use of the reporter gene assay. Among the 24 composites, 6 products were estrogenic, and among the 18 constituents, 1 photostabilizer, 2-hydroxy-4-methoxy-benzophenone (HMBP), 1 photoinitiator, 2,2-dimethoxy-2-phenyl-acetophenone (DMPA), and 1 inhibitor, 2,6-di- tert-butyl- p-cresol (BHT) had significant estrogenic activity. The concentration of HMBP in 4 estrogenic eluates was greater than the minimum concentration required for estrogenicity, and DMPA was found at a higher level than the minimum estrogenic concentration in the remaining 2 estrogenic specimens. These results suggest that the observed estrogenic activity of 6 composites is associated with the elution of either HMBP or DMPA.

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