NDLI: Anesthetic Ketamine-Induced DNA Damage in Different Cell Types In Vivo

Content Provider	Springer Nature Link
Author	Leffa, Daniela Dimer Bristot, Bru Nunes Damiani, Adriani Paganini Borges, Gabriela Daminelli Daumann, Francine Zambon, Gabriela Maria Fagundes, Gabriela Elibio Andrade, Vanessa Moraes
Copyright Year	2015
Abstract	The use of a combination of ketamine and xylazine is broadly used either for anesthesia or euthanasia in rodent animal models in research. However, the genotoxicity and mutagenic effects of these drugs are unknown. Therefore, the aim of this study was to evaluate these effects to help the understanding of elevated values in negative controls in genotoxic/mutagenic assays. Sixty CF-1 mice were divided into ten groups of six mice per group: negative control (saline), positive control (doxorubicin, 40 mg/kg), ketamine at 80 mg/kg and xylazine at 10 mg/kg, ketamine at 100 mg/kg and xylazine at 10 mg/kg, ketamine at 140 mg/kg and xylazine at 8 mg/kg, ketamine at 80 mg/kg, ketamine at 100 mg/kg, ketamine at 140 mg/kg, xylazine at 8 mg/kg, and xylazine at 10 mg/kg. After drug induction, the blood cells were analyzed at 1, 12, and 24 h by the comet assay, while the brain cortex, liver, and kidney cells were verified just at 24 h by the comet assay and bone marrow was tested at 24 h by micronucleus test. The positive control was significantly different in relation to the negative control in all times and tissue analyzed. The dose of ketamine at 140 mg/kg plus xylazine at 8 mg/kg and only ketamine at 140 mg/kg exhibited a genotoxic effect in blood and brain cells at all the times analyzed. The doses of ketamine at 80 and 100 mg/kg in association or not with xylazine showed increased DNA damage at 1 and 12 h, but this effect was reversed after 24 h of drug administration. The liver, kidney, and bone marrow cells of animals treated with ketamine or xylazine isolated or combined did not differ when compared with the negative control. Then, our findings emphasize the necessity of more studies that prove safety of the ketamine use, since that anesthetic can be able to induce false-negative results in genotoxic experimental studies.
Starting Page	5575
Ending Page	5581
Page Count	7
File Format	PDF
ISSN	08937648
Journal	Molecular Neurobiology
Volume Number	53
Issue Number	8
e-ISSN	15591182
Language	English
Publisher	Springer US
Publisher Date	2015-10-17
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ketamine Anesthetics Genotoxicity Comet assay Mutagenicity Micronucleus test Neurosciences Neurobiology Cell Biology Neurology
Content Type	Text
Resource Type	Article
Subject	Neurology Cellular and Molecular Neuroscience

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