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지구성 운동과 MitoQ 섭취가 Alcl3로 유도된 알츠하이머 질환 동물 모델의 Tau 과인산화, 산화스트레스, 항산화 조절 요인, 미토콘드리아 기능 및 인지기능에 미치는 영향

Effect of Endurance Exercise and MitoQ Intake on Tau Hyperphosphorylation, Oxidative Stress, Antioxidant Modulating Factors, Mitochondrial Function, and Cognitive Function in Alcl3-Induced Alzheimer’s Disease Animal Model

최동훈|이정국|조준용|정진희
한국운동생리학회|2021.08|운동과학 (Exercise Science)|제30권 제3호|pp. 396-406

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참고문헌

키워드

Alzheimer’s disease운동ExerciseAntioxidantOxidative stress항산화제타우Tau산화스트레스마이토큐MitoQ알츠하이머질환

초록

PURPOSE: This study aimed to investigate the effect of 8 weeks of endurance exercise and MitoQ intake on tau hyperphosphorylation, oxidative stress, antioxidant modulating factors, mitochondrial function, and cognitive function in an AlCl3-induced Alzheimer’s disease animal model. METHODS: For the experimental animals, 40 mg/kg of aluminum chloride (AlCl3) was diluted with physiological saline for 60 days and intraperitoneally injected to create an Alzheimer’s disease animal model. In addition, endurance exercise was performed at a speed of 12 m/min using a treadmill for laboratory animals for 8 weeks, and MitoQ was applied with a 100 μm concentration of negative water. The rats were randomly divided into five groups: a saline control group (NC, n=6), an AlCl3 injection group (AC, n=6), an AlCl3 injection and treadmill exercise group (AE, n=6), an AlCl3 injection and MitoQ group (AM, n=6), and an AlCl3 injection and treadmill exercise and MitoQ intake group (AEM, n=6). The SPSS program was used for statistical analyses. Differences between the groups in each variable were analyzed using the one-way ANOVA. RESULTS: Endurance exercise and MitoQ intake for 8 weeks showed positive results in cognitive function and decreased tau hyperphosphorylation in the animal model with Alzheimer’s disease. In addition, they reduced oxidative stress (4-HNE, MDA) and had a positive effect on antioxidant indicators (catalase, SOD-1, SOD-2). Finally, they exhibited a positive effect on factors related to mitochondrial function (PGC-1, Tfam). CONCLUSIONS: Eight weeks of endurance exercise and MitoQ intake are thought to have a positive effect in alleviating Alzheimer’s disease in terms of improving cognitive function through AlCl3 accumulation, tau hyperphosphorylation, oxidative stress, antioxidant modulating factors, and mitochondrial function.

Abstract

PURPOSE: This study aimed to investigate the effect of 8 weeks of endurance exercise and MitoQ intake on tau hyperphosphorylation, oxidative stress, antioxidant modulating factors, mitochondrial function, and cognitive function in an AlCl3-induced Alzheimer’s disease animal model. METHODS: For the experimental animals, 40 mg/kg of aluminum chloride (AlCl3) was diluted with physiological saline for 60 days and intraperitoneally injected to create an Alzheimer’s disease animal model. In addition, endurance exercise was performed at a speed of 12 m/min using a treadmill for laboratory animals for 8 weeks, and MitoQ was applied with a 100 μm concentration of negative water. The rats were randomly divided into five groups: a saline control group (NC, n=6), an AlCl3 injection group (AC, n=6), an AlCl3 injection and treadmill exercise group (AE, n=6), an AlCl3 injection and MitoQ group (AM, n=6), and an AlCl3 injection and treadmill exercise and MitoQ intake group (AEM, n=6). The SPSS program was used for statistical analyses. Differences between the groups in each variable were analyzed using the one-way ANOVA. RESULTS: Endurance exercise and MitoQ intake for 8 weeks showed positive results in cognitive function and decreased tau hyperphosphorylation in the animal model with Alzheimer’s disease. In addition, they reduced oxidative stress (4-HNE, MDA) and had a positive effect on antioxidant indicators (catalase, SOD-1, SOD-2). Finally, they exhibited a positive effect on factors related to mitochondrial function (PGC-1, Tfam). CONCLUSIONS: Eight weeks of endurance exercise and MitoQ intake are thought to have a positive effect in alleviating Alzheimer’s disease in terms of improving cognitive function through AlCl3 accumulation, tau hyperphosphorylation, oxidative stress, antioxidant modulating factors, and mitochondrial function.

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