The Korean Journal of Food And Nutrition (한국식품영양학회지)

The Korean Society of Food and Nutrition (한국식품영양학회)
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Effect of Medicinal Herb Composites on Antioxidative and Cognition-Enhancing Activities in Rats

생약복합물이 흰쥐의 체내에서 항산화 및 인지개선활성에 미치는 영향

  • Kang, Jin-Soon (Dept. of Food & Nutrition, International University of Korea)
  • 강진순 (한국국제대학교 식품영양학과)
  • Received : 2016.04.18
  • Accepted : 2016.06.13
  • Published : 2016.06.30
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Abstract

The purpose of this experiment was designed to investigate the effects of medicinal herbs (MH) extracts on dementia induced by trimethyltin chloride (TMT) in rats. Six-week-old male Sprague-Dawley rats were randomly divided into five groups; normal group (group 1), control group (group 2), MH extracts group (250, 500 mg/kg) (group 3, group 4) and positive control group (tacrine group, group 5). In the control group to induce dementia, a 2.5 mg/kg of TMT intraperitoneal injection was used for 14 days (1 per day) in the rats. In the MH extracts group 250 mg/kg and 500 mg/kg of MH extracts were medicated in an oral inoculation for 20 days (1 per day). After 30 minutes, a 2.5 mg/kg of TMT intraperitoneal injection, which causes dementia, was used for 14 days (1 per day). In the positive control group (Tacrine group) 10 mg/kg of Tacrine, the dementia treatment, was medicated in an oral inoculation. After 30 mintues, 1 mg/kg of TMT intraperitoneal injection, which causes dementia, was used for 14 days (1 per day). The present author observed the passive avoidance performance test, and memory ability test (Y maze test), the values of MDA, acetlycholinesterase (AchE) activity in the brain and antioxidant enzyme in serum. MH extracts significantly improved memory of AD model rats in the Y-maze test, and also significantly improved memory of AD model rats in the passive avoidance test. MH extracts significantly reduced AChE activity, and significantly increased the SOD level, but not catalase and MDA. From the results above, MH extracts is thought to be effective in the improvement of antioxidant enzymes and memory ability.

인지기능 활성을 가진 생약복합물을 선정하여 최적조성물을 조제한 다음, 생약복합물의 첨가비율을 달리하여 치매유도 동물모델에서 항산화 효과와 인지기능 개선을 확인한 결과는 다음과 같다. 1. 20일간 사육한 흰쥐 혈청의 GOT, GPT, creatinine 및 BUN 활성을 측정한 결과, 생약복합물을 투여한 군(3, 4군)이 정상군(1군)에 비해 GOT 농도는 감소하였고, GPT 농도와 Creatinine 농도는 유의적인 차이는 없었다. BUN 농도는 정상군(1군)에 비해 생약복합물을 투여한 군(3, 4군)이 유의적으로 감소하였다. 2. 혈액 중의 총 콜레스테롤과 HDL-cholesterol은 유의적인 차이가 없었으나, 중성지방은 전군에서 정상군(1군)에 비해 치매유발군인 2군이 낮았고, 생약복합물 투여군(3, 4군), 치매치료군(5군)은 가장 낮았으며, 이들 군 간에는 유의적인 차이는 없었다. 3. 혈액 SOD 활성은 정상군(1군), TMT 투여군(2군) 및 tacrine 투여군(5군) 간에는 유의적인 차이가 없었으나, 생약복합물 투여군(3, 4군)이 다소 높아 유의적인 차이를 나타내었다(p<0.05). MDA 함량은 정상군인 1군과 치매치료군인 5군이 치매유발군인 2군과 생약복합물 투여군(3, 4군)에 비해 유의적으로 높았으며, 2, 3, 4군 간에는 유의적인 차이가 없었다. 4. AChE 활성은 TMT로 치매를 유발한 2군이 가장 높았으며, 치매치료군(5군)은 정상군(1군)의 수준으로 가장 낮게 나타났다. 그리고 생약복합물을 투여한 3군, 4군에서는 유의적 차이는 없으나, TMT로 치매를 유발한 2군보다는 유의적으로 감소하였고(p<0.05), 치매치료군인 5군보다는 다소 높게 나타났다. 5. 단기기억능력을 시험하기 위한 Y-maze를 실시한 결과는 Y-maze의 각 arm을 통과한 총 횟수는 전군에서 유의적인 차이는 없었다. 교차행동력은 TMT 투여군인 2군이 가장 낮았으며, 치매치료제인 tacrine을 투여한 5군이 가장 높아 5군(tacrine 투여)은 TMT 투여군인 2군에 비해 약 125% 현저한 기억력 증가를 보였다. 이에 반해 생약복합물 투여한 2, 3군은 정상군과 유의적인 차이가 없었으나, TMT 투여군인 2군에 비해 각각 117.32%와 120.38% 수준으로 기억력 증가를 보였다. 장기기억능력을 시험하기 위한 수동회피실험의 결과, TMT 투여군(2군)은 전군에서 가장 낮았으나, 생약복합물 중, 고용량 투여군(3, 4군) 및 tacrine 투여군은 증가하였고, 특히 고용량(4군)에서 유의성 있는 증가를 나타내어(p<0.05) 정상군에 가깝게 회복시켜 주는 경향을 보여 주었다. 이상의 결과를 통하여 생약복합물은 치매 유발 동물모델의 항산화능의 저하를 억제하고, AChE 활성을 억제하여 ACh의 활성을 촉진하므로 장 단기 기억능력의 회복 및 개선효과를 확인할 수 있었다. 그러나 향후 생약복합물의 농도에 따른 첨가군을 확대하여 인지기능 개선에 가장 효과적인 최적농도를 도출하는 연구가 계속 진행되어야 할 것으로 사료된다.

Keywords

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