The Impairment of Trans Fatty Acids on Learning, Memory and Brain Amino Acid Neurotransmitters in Mice

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  • ZHANG Tiantian
    Department of Hygiene Detection, College of Public Health, Shandong University
  • LIU Ping
    Department of Hygiene Detection, College of Public Health, Shandong University
  • SUN Yu
    Department of Hygiene Detection, College of Public Health, Shandong University
  • REN Na
    Department of Hygiene Detection, College of Public Health, Shandong University
  • NIE Shuang
    Department of Hygiene Detection, College of Public Health, Shandong University

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The aim of the study was to demonstrate the impairment of trans fatty acids (TFAs) in neurological disorders in mice. Forty-eight male Kunming mice were randomly divided into four groups with twelve in each group, namely a control group (corn oil group), and TFA groups with low, middle and high dosages. The tested chemicals were given by gavage, once a day, for 12 wk in total, with the volume of the intragastric liquid as 0.1 mL/10 g of body weight. The mice in the control group were given corn oil only. The mice in the TFA groups were given TFA solution (doses were 25, 50 and 100 mg/kg of body weight, respectively). The Morris circle water maze was used to test learning and memory of mice. The activity of acetylcholinesterase (AChE), nitric oxide synthase (NOS) and the level of brain amino acid neurotransmitters were tested. In the Morris water maze task, and compared to the control group, TFAs showed no obvious effect on learning or memory. TFA intake led to a significant decrease of AChE in all TFA groups, and the increase in levels of NOS in the high-dose group. Meanwhile, intake of TFAs increased the levels of Asp, Glu, Gly, and Tau in all TFA groups. The results suggest that long-term intake of TFAs probably impairs learning, memory and brain neurotransmitters in mice.

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