Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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The Effects of Solidago virga-aurea var. gigantea Miq. Root Extract on Bone Metabolism in Growth Period Rats

미역취뿌리 추출물이 성장기 흰쥐의 골대사에 미치는 영향

  • Lee Ji-Won (Dept. of Food Science & Technology, Keimyung University) ;
  • Park Jung-Hyun (The Center for Traditional Microorganism Resources center, Keimyung University) ;
  • Lee Hyo-Joo (Dept. of Food Science & Technology, Keimyung University) ;
  • Lee In-Seon (The Center for Traditional Microorganism Resources center, Keimyung University)
  • 이지원 (계명대학교 식품가공학과) ;
  • 박정현 (계명대학교 전통 미생물자원 개발 및 산업화 연구센터) ;
  • 이효주 (계명대학교 식품가공학과) ;
  • 이인선 (계명대학교 전통 미생물자원 개발 및 산업화 연구센터)
  • Published : 2005.04.01
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Abstract

To investigate the bioactivities of Solidago virga-aurea var. gigantea Mig. Root (SVR), we studied the effect of a SVR methanol extract on the activity of bone metabolism. Spraque-Dawley three-week-old female rats were randomly assigned to groups as follows : non-supplemented rats and supplemented with SVR at 10, 50, 100 mg/kg bw/day. Every week determined weight gain and food intake, urine and blood examination of mineral content of calcium and phosphorus was performed each at experimental periods of 3 and 9 weeks respectively; bone mineral density and bone mineral content were also assayed. There were no significant differences in body weight or feed efficiency ratio levels. However, the biological value of calcium and phosphorus excretion in the group supplemented with SVR extract decreased significantly more than that in the group not supplemented with SVR extract. Also, spine BMD, femur BMC and pelvis BMC per weight were significantly greater on SVR extract supplemented groups than that of the control group. In conclusion, it might be expected that methanol extract of SVR does not impair the growth of rats and may improve bone metabolism in rats.

본 연구에서는 3주령의 암컷 흰쥐를 이용하여 미역취뿌리 추출물이 골대사에 미치는 영향을 조사하고자 미역취뿌리 메탄올 추출물을 10, 50, 100 mg/kg/day의 농도로 음용수에 희석하여 9주간 사육시켰다. 매주 체중과 사료효율을 측정한 결과, 대조군에 비해 체중의 변화나 사료효율에는 유의적으로 차이가 없는 것으로 보아 미역취 뿌리 추출물에 대한 기본적 독성은 없고, 성장에 미치는 영향은 없는 것으로 사료되었다. 그리고 3주 간격으로 소변으로 배출되는 Ca과 P의함량을 ICP로 분석 한 결과, 10 mg/kg/day농도로 음용한 군에서 유의적으로 감소됨을 확인 할 수 있었고 혈액으로 유리되는 Ca과 P의 함량 또한 섭취군에서 유의적으로 감소되는 것을 확인하였다. 또한 섭취 후 9주째에 양에너지 방사선 골밀도 측정기(dual energy x-ray absorptiometry, DEXA)를 이용하여 척추, 대퇴골, 골반의 골밀도와 골무기질 함량을 측정한 결과, 메탄을 추출물을 음용한 군의 척추 골밀도가 대조군에 비해 유의적으로 높게 나타났으며, 글 무기질 함량 또한 대퇴골과 골반에서 대조군에 비해 유의적으로 높게 나타났다. 따라서 미역취뿌리 메탄을 추출물의 음용이 암컷 흰쥐에서 골밀도 및 골함량에 유의하게 작용하고 또한 골대사 과정에서 유리되는 Ca와 P의 대사과정에 작용하여 유리되는 Ca과 P의 양을 감소시켜 이상의 결과로 미뤄볼 때, 적절한 미역취뿌리 추출물의 투여는 흰쥐의 성장에 대해 부작용이나 독성없이 골밀도와 골무기질 함량을 높였으며 앞으로 조골세포 기능 저하로 인한 골대사 질환에 사용되어 질 수 있을 것이다.

Keywords

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