생명과학회지 (Journal of Life Science)

  • 제14권2호
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  • Pages.245-251
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  • 2004
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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저강도 treadmill 운동이 streptozotocin 유도 당뇨쥐의 혈당, 인슐린 및 지질 농도에 미치는 영향

The Effect of Low-Intensity Treadmill Exercise on Blood Levels of Glucose, Insulin and Lipids in Streptozotocin-Induced Diabetic Rats

  • 김세종 (부산대학교 체육학과) ;
  • 서혜림 (부산대학교 체육학과) ;
  • 고정림 (부산대학교 체육학과) ;
  • 염종우 (부산대학교 체육학과) ;
  • 예정복 (부산대학교 체육학과) ;
  • 이선주 (부산대학교 나노기술학과) ;
  • 김경환 (부산대학교 나노기술학과) ;
  • 손원협 (부산대학교 나노기술학과) ;
  • 장은숙 (부산대학교 나노기술학과)
  • 발행 : 2004.04.01
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초록

본 연구는 streptozotocin으로 당뇨병을 유도하는 조건들을 농도에 따른 변화를 관찰하고, 적절한 조건에서 당뇨쥐에서의 저강도의 treadmill 운동이 체중과 혈중의 당, 인슐린 및 지질의 변화에 미치는 영향을 알아보고자 실시하였으며, 연구결과를 요약하면 다음과 같다. 실험 I에서 STZ 주사량이 40 mg/mg으로 높아질수록 정상군에 비해 혈당이 유의하게 증가하고, 반대로 체중과 인슐린 농도는 상대적으로 감소하였다. 실험II에서 STZ 주사를 한 모든 군에서 혈당이 유의하게 증가하지만 BE군은 C군에 비해 그 증가율이 유의하게 억제되었으며, 운동이 인슐린 농도와 혈중지질 농도를 정상적으로 유도하는 것으로 나타났다. 특히, 당뇨 유발 전부터 운동을 실시한 경우 그 효과가 더욱 유의하게 나타났으며, 앞으로 당뇨 유발의 정도와 운동 빈도 및 강도와 관련된 더욱 많은 연구가 이루어져야 할 것으로 사료된다.

Exercise is beneficial to the diabetic patients and streptozotocin-induced diabetic rat has been used for the study of exercise effect. The purpose of this study was to establish the optimal condition of induction of hyperglycemic diabetic rat using streptozotocin and to examine the preventive effect of treadmill exercise on the diabetic rat before and after streptozotocin injection. Intraperitoneal injection of increasing amount of streptozotocin up to 40 mg/kg dose-responsively induce hyperglycemic diabetic rat and inversely reduced the blood insulin level. Body weight was also gradually reduced with the increasing amount of streptozotocin. Control and diabetic rats exercised for 4 weeks before streptozotocin injection. The exercise was performed in the treadmill for 25 minutes a day and 5 times a week with low intensity (0 degree tilt, 15 m/min velocity). Following streptozotocin injection, the blood glucose level was measured every week and the rat was sacrificed after 4 weeks to measure the concentration of insulin and blood lipids. The blood levels of glucose and insulin was significantly reduced with exercise before streptozotocin injection, while those were not changed after streptozotocin injection. The levels of blood lipids such as total cholesterol, HDL-cholesterol, LDL-cholesterol and triglyceride were close to normal control rats. From this study, researchers found the optimal condition of preparation of streptozotocin-induced hyperglycemic diabetic rat, and the mild treadmill exercise has beneficial effect on preventing hyperglycemia and hyperlipidemia. Thus, even low intensive running prevent not only diabetes but also diabetic vascular complications.

키워드

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