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논문 기본 정보

자료유형
학술저널
저자정보
Qian Guo (Chung-Ang University) Young-Nam Kim (Duksung Women"s University) Bog-Hieu Lee (Chung-Ang University)
저널정보
한국영양학회 Nutrition Research and Practice Nutrition Research and Practice Vol.11 No.1
발행연도
2017.2
수록면
25 - 32 (8page)

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초록· 키워드

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BACKGROUND/OBJECTIVES: Stress-induced cognitive impairment is related to the suppression of hippocampal neurogenesis that results from an increase of oxidative stress. Therefore, the aim of this study was to investigate the effects of administration of a blueberry drink, having a high antioxidant power, on the cognitive performance of adult rats exposed to chronic mild stress.
MATERIALS/METHODS: Twelve-week-old male Sprague-Dawley rats (n = 48) were randomly divided into four groups: control (CO), stress (ST), control + 5% blueberry drink (CO + B), and stress + 5% blueberry drink (ST + B). After eight weeks, the cognitive performance was assessed using a multiple T-maze water test. Levels of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and ascorbic acid were measured in the brain, and catecholamine concentrations were measured in plasma.
RESULTS: The brain weights of the rats from the ST and ST + B groups were significantly lower than those of the rats from the CO and CO + B groups. The cognitive performance of the ST group was impaired when compared to that of the CO group. This impairment was significantly improved by the blueberry drink supplementation (P < 0.05). The brain SOD and CAT concentrations were not influenced by the stress or by the blueberry drink. However, the brain levels of GPx and ascorbic acid were significantly lower in the ST group than those in the CO group and were increased by the blueberry drink supplementation. The plasma catecholamine concentrations were affected by chronic mild stress and by the blueberry drink. The plasma norepinephrine and dopamine concentrations were decreased by the chronic stress and improved by the blueberry drink supplementation. The plasma epinephrine level was only influenced by the stress.
CONCLUSION: These findings suggest that the blueberry drink may protect against the cognitive impairment induced by chronic mild stress.
#Blueberry #cognitive impairment #chronic stress #antioxidant #catecholamine

목차

INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFFERENCES

참고문헌 (48)

참고문헌 신청
Chen WQ, Zhao XL, Hou Y, Li ST, Hong Y, Wang DL, Cheng YY. Protective effects of green tea polyphenols on cognitive impairments induced by psychological stress in rats. Behav Brain Res 2009;202:71-6. Liu J, Mori A. Stress, aging, and brain oxidative damage. Neurochem Res 1999;24:1479-97. Pike JL, Smith TL, Hauger RL, Nicassio PM, Patterson TL, McClintick J, Costlow C, Irwin MR. Chronic life stress alters sympathetic, neuroendocrine, and immune responsivity to an acute psychological stressor in humans. Psychosom Med 1997;59:447-57. Kim JJ, Diamond DM. The stressed hippocampus, synaptic plasticity and lost memories. Nat Rev Neurosci 2002;3:453-62. Joels M, Pu Z, Wiegert O, Oitzl MS, Krugers HJ. Learning under stress: how does it work? Trends Cogn Sci 2006;10:152-8.

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