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논문 기본 정보

자료유형
학술저널
저자정보
Myeong Jin Lee (Konyang University) Ji Hye Lee (Konyang University) Do Kyung Kim (Konyang University) Nam Seob Lee (Konyang University) Young Gil Jeong (Konyang University) Ji Heun Jeong (Konyang University) Jong Ho Park (Konyang University) Yung Choon Yoo (Konyang University) Seung Yun Han (Konyang University)
저널정보
대한체질인류학회 해부·생물인류학 해부·생물인류학 제33권 제3호
발행연도
2020.9
수록면
125 - 134 (10page)

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Reactive oxygen species (ROS)-mediated oxidative stress plays a key role in the pathogenesis of central nervous system diseases, including vascular dementia (VaD). Thus, scientific attention has been given to the uptake of molecular hydrogen (H₂), a powerful ROS scavenger that is abundant in nature, as a potential therapeutic candidate. Among the methods to supply H₂, we selected an oral supplement of magnesium hydride (MgH₂) and investigated its therapeutic role in cognitive impairment and hippocampal neuronal death associated with VaD. Sprague Dawley rats were randomly divided into 4 groups (n of each=8) and subjected to different conditions: SO, a group with vehicle and sham-operation; VEH, a group with a vehicle and 2VO/H (2 vessel occlusion and hypovolemia, used as a surgical model of VaD); MH-L, a group with low dose (5 mg/kg) of MgH₂ and 2VO/H; and MH-H, a group with high dose (15 mg/kg) of MgH₂ and 2VO/H. MgH₂ or vehicle was administered via an intragastric route for 14 days before the operation. Subsequently, the memory performances of rats were tested using three behavior tests, i.e., Y-maze-, Barnes maze-, and passive avoidance tests (PAT). On postoperative day 8, the number of viable neurons in the hippocampal Cornu Ammonis (CA) 1 region was measured. The results of behavioral tests revealed that memory performance was significantly hampered in the VEH group when compared with the SO group; however, the extent of the impairment was markedly diminished in the MH-L and MH-H groups. While the number of pyramidal neurons in hippocampal CA1 was largely reduced in the VEH group when compared with the SO group, this reduction was significantly attenuated in the MH-L and MH-H groups. The effects of MgH₂ were dose-dependent in PAT and histologic experiments. These results suggest that MgH₂ supplementation can attenuate cognitive impairment and hippocampal neuronal death associated with VaD.

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Abstract
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFERENCES

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