Evaluation of behavioral profiles in mice fed with milk supplemented diets derived from human lactoferrin gene-modified cows.
Regulatory Toxicology and Pharmacology(2019)
Abstract
To date, many safety assessments of genetically modified (GM) food have been done, but there was still considerable skepticism about the safety of genetic modified foods because no study could be designed to discover all of the potential effects. Since behavioral endpoints could provide one of the most sensitive strategies to reveal subtle functional deficits. In the present study, behavioral profiles in mice fed with milk derived from human lactoferrin gene-modified cows were investigated to enrich the toxicological data of GM food. Conventional milk and GM milk were added to diets at a proportion of 7.5%, 15% and 30%(w/w). After the mice consuming different diets for 30 days, a battery of behavioral tests were conducted to evaluate motor, sensory and cognitive functions. No significant differences were observed in spontaneous activity, grip strength and nociception between the treatment groups. And animals of different groups exhibited similar performance in rotarod, dark box, step-down and MORRIS water maze task. The study suggested that mice fed with conventional milk or human lactoferrin gene-modified milk had similar motor, sensory and cognitive functions.
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Key words
Food safety,Genetically modified animals,Genetically modified cow,Human lactoferrin,Behaviour
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