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Original Article
- DNA Damage of Lymphocytes in Volunteers after 4 hours Use of Mobile Phone.
- Seonmi Ji, Eunha Oh, Donggeun Sul, Jae Wook Choi, Heechan Park, Eunil Lee
- J Prev Med Public Health. 2004;37(4):373-380. Published online November 30, 2004
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Abstract
PDF - OBJECTIVES
There has been gradually increasing concern about the adverse health effects of electromagnetic radiation originating from cell phones which are widely used in modern life. Cell phone radiation may affect human health by increasing free radicals of human blood cells. This study has been designed to identify DNA damage of blood cells by electromagnetic radiation caused by cell phone use. METHODS: This study investigated the health effect of acute exposure to commercially available cell phones on certain parameters such as an indicator of DNA damage for 14 healthy adult volunteers. Each volunteer during the experiment talked over the cell phone with the keypad facing the right side of the face for 4 hours. The single cell gel electrophoresis assay (Comet assay), which is very sensitive in detecting the presence of DNA strand-breaks and alkali-labile damage in individual cells, was used to assess peripheral blood cells (T-cells, B-cells, granulocytes) from volunteers before and after exposure to cell phone radiation. The parameters of Comet assay measured were Olive Tail Moment and Tail DNA %. RESULTS: The Olive Tail Moment of B-cells and granulocytes and Tail DNA % of B-cells and granulocytes were increased by a statistically significant extent after 4- hour use of a cell phone compared with controls. CONCLUSION: It is concluded that cell phone radiation caused the DNA damage during the 4 hours of experimental condition. Nonetheless, this study suggested that cell phone use may increase DNA damage by electromagnetic radiation and other contributing factors. -
SummaryEnglish Abstract
- Increased DNA Damage of Lymphocytes in Korean Male Smokers.
- Joohyun Lee, Eunil Lee, Eunha Oh, Juneyoung Lee, Donggeun Sul, Jooja Kim
- J Prev Med Public Health. 2007;40(1):16-22.
- DOI: https://doi.org/10.3961/jpmph.2007.40.1.16
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- 36 Download
- 2 Crossref
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Abstract
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- OBJECTIVE
The purpose of this study was to evaluate the levels of DNA damage in human lymphocytes caused by smoking and other lifestyle factors. METHODS: The study population consisted of 173 normal healthy male adults from 21 to 59 years old. The demographic and lifestyle variables were obtained from administered questionnaires. The level of lymphocytic DNA damage in the peripheral blood was evaluated by the Comet assay. Statistical analyses were done by general linear model analysis and Dunnett's multiple comparison. RESULTS: The difference in DNA damage between smokers and non-smokers was statistically significant. The means for the Tail%DNA were found to be 10.48 in the current smokers and 9.60 in the non-smokers (p<0.05). The tail moment means were 1.58 and 1.45 (p<0.05) for the current smokers and non-smokers, respectively. The number of cigarettes smoked per day did not result in a significant difference in the level of DNA damage among the smokers. Other lifestyle factors such as age, and drinking and exercise habits were not related to DNA damage. CONCLUSIONS: The DNA damage in the lymphocytes of smokers was found to be significantly higher than that for non-smokers. However, the number of cigarettes smoked per day was not related to DNA damage. Further study is needed to evaluate the relationship between the amount of smoking and level of damage to DNA. In addition, the status of DNA repair activities should be assessed. -
Summary
Citations
Citations to this article as recorded by
- DNA strand breaks in peripheral blood leucocytes of Polish blood donors
Małgorzata M Dobrzyńska, Krzysztof A Pachocki, Katarzyna Owczarska
Mutagenesis.2018; 33(1): 69. CrossRef - The effect of carrot juice, β-carotene supplementation on lymphocyte DNA damage, erythrocyte antioxidant enzymes and plasma lipid profiles in Korean smoker
Hye-Jin Lee, Yoo Kyoung Park, Myung-Hee Kang
Nutrition Research and Practice.2011; 5(6): 540. CrossRef
Original Article- DNA Damage in Lymphocytes after Hair Dyeing and Related Factors among Women Volunteers.
- Jin A Cho, Eun Ha Oh, Dong Geun Sul, Eun Il Lee
- Korean J Prev Med. 2002;35(4):275-281.
- 2,703 View
- 21 Download
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Abstract
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- OBJECTIVES
To evaluate the DNA damage by hair dyeing in human lymphocytes. METHODS: Comet assays were carried out to evaluate the DNA damage in lymphocytes by hair dyeing. Twenty subjects were selected from women volunteers whose age ranged from 55 to 67 year old. All subjects had no smoking history. Blood samples were collected before and 6 hours after hair dyeing. DNA damage was evaluated by means of the tail moments, which were quantified by a KOMET 4.0 image analysis system. RESUJLTS: The tail moments before hair dyeing showed no significant differences among subjects except for the high frequency group. The mean values of the tail moments in subjects with low and high frequencies of hair dyeing were 1.39 and 1.77, respectively (p<0.05). The tail moments after hair dyeing increased significantly. The mean values of tail moments in subjects before and after hair dyeing were 1.45 and 1.79, respectively (p<0.01). However, the difference levels of DNA damage in lymphocytes before and after hair dyeing were found to be slightly lower in both the dietary supplement taking group and high frequency group. CONCLUSIONS: The high frequency group appears to have a higher level of DNA damage than the low frequency group before hair dyeing. DNA damage in lymphocytes was found to be significantly higher in the volunteers after hair dyeing. In this study, the related factors such as high frequency and taking dietary supplements appeard to reduce DNA damage in lymphocytes after hair dyeing. -
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