Dose-dependent influence of genetic polymorphisms on DNA damage induced by styrene oxide, ethylene oxide and gamma-radiation

Toxicology ◽  
2006 ◽  
Vol 219 (1-3) ◽  
pp. 220-229 ◽  
Author(s):  
Lode Godderis ◽  
Peter Aka ◽  
Raluca Mateuca ◽  
Micheline Kirsch-Volders ◽  
Dominique Lison ◽  
...  
Keyword(s):  
Dna Damage ◽  
Ethylene Oxide ◽  
Gamma Radiation ◽  
Genetic Polymorphisms ◽  
Styrene Oxide ◽  
Dose Dependent

scholarly journals Overexpression of rice jacalin-related mannose-binding lectin (OsJAC1) enhances resistance to ionizing radiation in Arabidopsis

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
In Jung Jung ◽  
Joon-Woo Ahn ◽  
Sera Jung ◽  
Jung Eun Hwang ◽  
Min Jeong Hong ◽  
...  
Keyword(s):  
Dna Damage ◽  
Gamma Radiation ◽  
Expression Profiles ◽  
Dna Damage Checkpoints ◽  
Damage Response ◽  
Mannose Binding ◽  
Transgenic Lines ◽  
Dose Dependent ◽  
Resistance To Ionizing Radiation ◽  
Binding Lectin

Abstract Background Jacalin-related lectins in plants are important in defense signaling and regulate growth, development, and response to abiotic stress. We characterized the function of a rice mannose-binding jacalin-related lectin (OsJAC1) in the response to DNA damage from gamma radiation. Results Time- and dose-dependent changes of OsJAC1 expression in rice were detected in response to gamma radiation. To identify OsJAC1 function, OsJAC1-overexpressing transgenic Arabidopsis plants were generated. Interestingly, OsJAC1 overexpression conferred hyper-resistance to gamma radiation in these plants. Using comparative transcriptome analysis, genes related to pathogen defense were identified among 22 differentially expressed genes in OsJAC1-overexpressing Arabidopsis lines following gamma irradiation. Furthermore, expression profiles of genes associated with the plant response to DNA damage were determined in these transgenic lines, revealing expression changes of important DNA damage checkpoint and perception regulatory components, namely MCMs, RPA, ATM, and MRE11. Conclusions OsJAC1 overexpression may confer hyper-resistance to gamma radiation via activation of DNA damage perception and DNA damage checkpoints in Arabidopsis, implicating OsJAC1 as a key player in DNA damage response in plants. This study is the first report of a role for mannose-binding jacalin-related lectin in DNA damage.

Use of the comet assay to measure DNA damage in cells exposed to photosensitizers and gamma radiation

1999 ◽  
Vol 96 (1) ◽  
pp. 143-146 ◽  
Author(s):  
J.-P. Pouget ◽  
J.-L. Ravanat ◽  
T. Douki ◽  
M.-J. Richard ◽  
J. Cadet
Keyword(s):  
Dna Damage ◽  
Comet Assay ◽  
Gamma Radiation ◽  
In Cells

Size Control of Styrene Oxide−Ethylene Oxide Diblock Copolymer Aggregates with Classical Surfactants:  DLS, TEM, and ITC Study

2005 ◽  
Vol 6 (3) ◽  
pp. 1438-1447 ◽  
Author(s):  
Emilio Castro ◽  
Pablo Taboada ◽  
Silvia Barbosa ◽  
Víctor Mosquera
Keyword(s):  
Ethylene Oxide ◽  
Diblock Copolymer ◽  
Styrene Oxide ◽  
Size Control

scholarly journals Cytotoxic Effects of Air Freshener Biocides in Lung Epithelial Cells

2013 ◽  
Vol 8 (9) ◽  
pp. 1934578X1300800
Author(s):  
Jung-Taek Kwon ◽  
Mimi Lee ◽  
Gun-Baek Seo ◽  
Hyun-Mi Kim ◽  
Ilseob Shim ◽  
...  
Keyword(s):  
Dna Damage ◽  
Epithelial Cells ◽  
Cell Viability ◽  
Lung Epithelial Cells ◽  
Ros Generation ◽  
Dependent Manner ◽  
Cytotoxic Effects ◽  
Lung Epithelial ◽  
Dose Dependent ◽  
A549 Lung

This study evaluated the cytotoxicity of mixtures of citral (CTR) and either benzisothiazolinone (BIT, Mix-CTR-BIT) or triclosan (TCS, Mix-CTR-TCS) in human A549 lung epithelial cells. We investigated the effects of various mix ratios of these common air freshener ingredients on cell viability, cell proliferation, reactive oxygen species (ROS) generation, and DNA damage. Mix-CTR-BIT and Mix-CTR-TCS significantly decreased the viability of lung epithelial cells and inhibited cell growth in a dose-dependent manner. In addition, both mixtures increased ROS generation, compared to that observed in control cells. In particular, cell viability, growth, and morphology were affected upon increase in the proportion of BIT or TCS in the mixture. However, comet analysis showed that treatment of cells with Mix-CTR-BIT or Mix-CTR-TCS did not increase DNA damage. Taken together, these data suggested that increasing the content of biocides in air fresheners might induce cytotoxicity, and that screening these compounds using lung epithelial cells may contribute to hazard assessment.

Modification of the relationship between urinary 8-OHdG and hippuric acid concentration by GSTM1, GSTT1, and ALDH2 genotypes

2010 ◽  
Vol 30 (4) ◽  
pp. 338-342 ◽  
Author(s):  
Yong-Dae Kim ◽  
Sang-Yong Eom ◽  
Yan Wei Zhang ◽  
Hyeongsu Kim ◽  
Jung-Duk Park ◽  
...  
Keyword(s):  
Dna Damage ◽  
Occupational Exposure ◽  
Genetic Polymorphisms ◽  
Hippuric Acid ◽  
Oxidative Dna Damage ◽  
Statistical Significance ◽  
Biological Marker ◽  
Metabolizing Enzymes ◽  
Toluene Exposure ◽  
The Relationship

Urinary hippuric acid (HA) has been widely used as a biological marker of occupational exposure to toluene, although it is no longer valid for low levels of toluene exposure. Toluene exposure is known to induce oxidative DNA damage and the metabolism is affected by genetic polymorphisms of some metabolizing enzymes. Therefore, genetic polymorphisms of these metabolizing enzymes must be considered in the evaluation of oxidative stress caused by toluene exposure. We evaluated the relationship between urinary 8-hydroxydeoxyguanosine (8-OHdG), a marker of oxidative DNA damage, and urinary HA in individuals without occupational exposure to toluene and characterized the possible roles of GSTM1, GSTT1, and aldehyde dehydrogenase 2 (ALDH2) genotypes in the relationships between these markers. In this study, we enrolled 92 healthy Koreans. Urinary HA and 8-OHdG levels were measured and the correlations between them were statistically tested according to the GSTM1, GSTT1, and ALDH2 genotypes. HA did not significantly correlate with urinary 8-OHdG in overall subjects. However, the correlation between them showed a statistical significance in individuals with GSTM1-null, GSTT1-null, and ALDH2 *2/*2 genotypes (r = 0.766, p < 0.01). This study shows that the relationship between urinary HA and 8-OHdG concentration is modified by genetic polymorphisms of some metabolizing enzymes such as GSTM1, GSTT1, and ALDH2.

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