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Oxygenated water does not induce genotoxic effects in the comet assay
Günter Speit1, Petra Schütz, Kristina Trenz
1Universitätsklinikum Ulm, Abteilung Humangenetik, Albert-Einstein-Allee 11, Germany. guenter.speit@medizin.uni-ulm.de
Toxicology Letters
|July 18, 2002
Summary
Drinking oxygenated water does not appear to cause DNA damage. Studies found no genotoxic effects in human blood cells or hamster cells exposed to oxygenated water, suggesting it is safe for consumption.
Area of Science:
- Biochemistry
- Genetics
- Toxicology
Background:
- Oxygenated water, with higher dissolved oxygen, is marketed for health benefits.
- Increased oxygen can elevate reactive oxygen species (ROS), potentially causing cell injury and DNA damage if antioxidant defenses are insufficient.
Purpose of the Study:
- To investigate if drinking oxygenated water increases DNA damage in human peripheral blood cells.
- To determine if direct exposure of V79 Chinese hamster cells to oxygenated media induces DNA damage.
Main Methods:
- The alkaline comet assay (single cell gel electrophoresis) was used to measure DNA damage.
- The comet assay was performed with and without FPG post-treatment to detect oxidative DNA base damage.
- In vivo (human subjects) and in vitro (cell cultures) studies were conducted.
Main Results:
- Neither the in vivo nor the in vitro studies showed evidence of genotoxicity.
- The alkaline comet assay, even with FPG modification for oxidative damage, did not detect DNA damage from oxygenated water.
Conclusions:
- Drinking oxygenated water does not appear to cause DNA damage in peripheral blood cells.
- Exposure of V79 Chinese hamster cells to oxygenated media or solutions does not induce DNA damage.
- The study found no evidence supporting a genotoxic effect of oxygenated water.