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트레드밀 운동과 밝은 빛이 흰쥐 뇌의 세로토닌 발현에 미치는 영향
권성진 ( Sung Jin Kwon ),송광섭 ( Kwang Seop Song ),권선옥 ( Sun Ok Kwon ) 한국스포츠정책과학원(구 한국스포츠개발원) 2014 체육과학연구 Vol.25 No.2
이 연구는 트레드밀 운동과 밝은 빛이 흰쥐 뇌의 세로토닌 발현에 미치는 영향을 조사하는데 그 목적이 있다. 수컷 흰쥐는 임의로 아홉 마리씩 네 집단(통제집단, 운동집단, 빛집단, 운동+빛집단)으로 분류하였다. 운동집단은 일주일에 5일, 하루에 30분씩 운동하였고, 빛집단은 일주일에 5일 하루에 30분씩 10,000 lux의 빛을 쬐었으며 운동+빛집단은 운동과 빛을 위 두 방식대로 복합처치 되었다. 실험기간은 4주간이며 통제집단은 아무런 실험처치 없이 사육되었다. 우리는 통제집단에 비해 나머지 집단에서 회봉선핵과 중뇌에서 세로토닌의 발현이 유의미하게 증가된 것을 알았다. 흥미로운 것은 세로토닌의 발현이 면역조직화학법에서 운동집단과 빛집단에 비해 운동+빛집단에서 유의미하게 증가된 것이고, 면역얼룩법에서도 유의미한 증가는 아니지만 증가의 양상을 보였다는 것이다. 결과적으로 트레드밀 운동과 밝은 빛은 뇌의 세로토닌 발현에 긍정적인 효과가 있음을 알 수 있었다. 그러므로 우리는 성장기에 밝은 빛을 쬐면서 운동을 하는 것은 뇌 활동에 도움이 될 것이라 제안한다. The main purpose of this study was to investigate the effects of treadmill exercise and bright light exposure on serotonin expression in rat brain. Male Sprague-Dawley (SD) rats were randomly assigned into four groups (n=9 in each group), specifically, control group (CG), exercise group (EG), light group (LG), and exercise+light group (ELG). Rats in EG were subjected to treadmill exercise (5 days/week, 30 min/day), LG rats exposed (5 days/week, 30 min/day, 10,000 Lux), ELG rats subjected to treadmill exercise in combination with exposure, and CG rats remained sedentary over a four-week period. We observed a significant increase in serotonin expression in the raphe obscurus nucleu and the midbrain of rats in EG, LG, and ELG, compared to CG. Interestingly, serotonin expression was significantly increased in ELG, compared to EG and LG in the raphe obscurus nucleu via immunohistochemistry. In the western blot, it showed a increased pattern in ELG, compared to EG and LG. The overall results showed that treadmill exercise and/or bright light had positive effects on serotonin expression in the brain. Therefore, we suggest that moderate exercise or exposure to bright light during a growth child may be beneficial in brain action.
트레드밀 운동과 밝은 빛이 흰쥐 해마의 GABA(A) 수용체와 Cdk5 발현에 미치는 영향
권성진 ( Sung Jin Kwon ) 한국스포츠정책과학원(구 한국스포츠개발원) 2016 체육과학연구 Vol.27 No.1
지속적인 운동과 햇빛 치료는 스트레스에 대한 저항력을 높여주고, 우울과 불안을 감소시키며, 이러한 과정은 신경전달물질 GABA의 분비에 따라 뇌의 신경세포의 성장 및 분화 그리고 발달과정에 관여한다. 본 연구는 트레드밀 운동과 밝은 빛이 흰쥐의 해마에서 GABAA 수용체의 활성에 의해 Ca2+이 세포내 유입이 되면 calcineurin의 칼슘 의존성 경로의 활성을 통해 NFATc4 단백질 및 뇌신경세포 발달과정에 관여하는 Cdk5 단백질과 대부분의 Cdk와는 달리 신경세포 특이적 조절인자인 p35의 변화가 신경세포 생성에 미치는 영향을 알아보고자 면역얼룩법을 수행하였다. 그 결과 GABAA 수용체, Cdk5 그리고 p35는 통제집단과 빛집단에 비해, KCC2와 NFATc4는 다른 모든 집단에 비해, calcineurin은 통제집단에 비해 운동+빛집단에서 유의미하게 증가함을 알 수 있었다. 결과적으로 운동과 빛의 복합적 치료는 뇌의 해마에서 뇌신경세포 발달 과정에 관여함으로써 뇌기능을 증진시키는데 긍정적인 효과가 있음을 확인하였다. It has been reported that continuous exercise and bright light exposure improved resistance to stress and reduced depression and anxiety, which were attributed to enhancing neurotransmitter GABA exocytosis and stimulating neurogenesis. In this study, the effects of treadmill exercise and bright light exposure on the expression of GABAA receptor activity, calcineurin and calcineurin calcium signaling pathway-depended NFATc4, neurogenesis-related protein Cdk5 and specific regulator factor of Cdk in neurogenesis p35 in the hippocampus of rats were investigated by western blot assay. The expression of GABAA receptor, Cdk5 and p35 significantly increased in the exercise+light group compared to the control group and the light group. The expression of KCC2 and NFATc4 significantly increased in the exercise+light group compared to all the other groups. And the expression of calcineurin significantly increased in the exercise+light group compared to the control group. The overall results showed that exercise and bright light stimulated neurogenesis of the hippocampus in rats and had positive effects on improving the brain neuronal function.
권성진(Kwon, Sung-Jin),김호준(Kim, Ho-Jun),백다혜(Baek, Da-Hye),김상균(Kim, Sangkyun) 강원대학교 산업기술연구소 2014 産業技術硏究 Vol.34 No.1
As importance of quality control in corporate environments is increasing, new methods for quality control have been suggested by various researchers. Based on gamification theory, this study suggests a new method for quality control. Firstly, this paper defines three problems of quality control that can be easily faced with in corporate environments. Secondly, three gamification methods aiming quality improvement are suggested. Finally, a survey is provided to prove the effect of the suggested gamification methods. Comparing the suggested gamification methods with the existing quality control methods, this study found that the suggested gamification methods could improve the level of quality control.
Total petroleum hydrocarbon에 의한 작물의 발아 및 유근생장 저해
임성진 ( Sung Jin Lim ),김진효 ( Jin Hyo Kim ),최근형 ( Geun Hyoung Choi ),권유빈 ( Yu Bin Kwon ),김두호 ( Doo Ho Kim ),박병준 ( Byung Jun Park ) 한국환경농학회 2013 한국환경농학회지 Vol.32 No.4
BACKGROUND: Total petroleum hydrocarbons (TPH), which are main materials of soil contamination by oil, are a term used for any mixture of hydrocarbons. Korea Ministry of Environment established the maximum permissible level of TPH in farmland by 500 mg/kg, and reported that the TPH level of soil in 266 installation such as gas station, transport company, and military unit ranged from 1,356 to 55,117 mg/kg and were much higher than the maximum permissible level in 2011. METHODS AND RESULTS: To determine the effect of TPH on crops, we investigated the effect of gasoline, kerosene, and diesel on the germination and radicle growth of mainly consumed crops. The germination rates of control in investigated all crops ranged from 80.0-100%. The germination and radicle growth in majority of investigated crops were not inhibited even at 2,500 mg/L. However, germination in onion, leek, and green perilla and radicle growth in leek, rape, tomato, and green perilla were significantly inhibited by increasing concentrations of gasoline, kerosene and diesel treatment. Germination and radicle growth inhibition of green perilla by kerosene and diesel were the highest, the percent inhibition at the 500 mg/L were 100 and 98.6%, 100 and 88.2%, respectively. 50% inhibition of germination in green perilla by kerosene and diesel were 39.96 and 29.87 mg/L, and 50% inhibition of radicle growth were 52.76 and 177.96 mg/L, respectively. Conclusion(s): These results suggest the possibility that the maximum permissible level of TPH might to be established general level with exception by crops.