한국식품과학회지 (Korean Journal of Food Science and Technology)

한국식품과학회 (Korean Society of Food Science and Technology)
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도라지 종자 추출물의 처리가 제2형 당뇨 db/db 마우스의 혈당개선에 미치는 효과

Improvement of blood glucose control in type 2 diabetic db/db mice using Platycodon grandiflorum seed extract

  • 김태영 (국민대학교 식품영양학과) ;
  • 김석중 (동덕여자대학교 식품영양학과) ;
  • 임지영 (국민대학교 식품영양학과)
  • Kim, Tae Yeong (Department of Foods and Nutrition, Kookmin University) ;
  • Kim, Seok Joong (Department of Food and Nutrition, Dongduk Women's University) ;
  • Imm, Jee-Young (Department of Foods and Nutrition, Kookmin University)
  • 투고 : 2019.12.13
  • 심사 : 2019.12.31
  • 발행 : 2020.02.29
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초록

PGSE의 혈당조절 효과를 평가하기 위하여 제2형 당뇨 동물모델을 이용하여 8주간의 동물실험을 진행한 결과, 고농도 PGSE(600 mg/kg)의 투여는 경구 포도당 내성 및 혈당 수준을 유의적으로 감소시켰으며(p<0.05), 당화혈색소도 유의적으로 낮은 수준을 유지시켰다(p<0.05). 또한, 혈청 인슐린과 렙틴 농도 역시 대조군과 비교하여 PGSE 고농도 처리군에서 유의적으로 감소하였다(p<0.05). PGSE 투여는 db/db 마우스의 골격근에서 인슐린 의존적 세포신호전달경로를 유의적으로 활성화시켰으며, AMPK 인산화를 촉진시키고, 골격근내 포도당 흡수를 위한 GLUT4의 세포막으로의 전이를 대조군 대비 약 1.7배 증가시켰다. 이러한 결과를 근거로 할 때 PGSE는 항 당뇨병 치료제로서의 잠재적 가능성을 가진 것으로 판단된다.

The biological activities of Platycodon grandiflorum (PG) root extracts have been studied intensively, whereas there are limited number of studies on PG seed extract (PGSE). PGSE was prepared by ethanol extraction, and its antidiabetic effect was evaluated in mice with type 2 diabetes (C57BLKS/J-db/db). Results indicated that the administration of high-dose PGSE (600 mg/kg, wb) significantly stabilized the blood glucose levels, as evidenced by the results of the oral glucose tolerance test. Mice treated with high-dose PGSE exhibited significantly lower serum hemoglobin A1c, insulin, and leptin levels after eight weeks of feeding trial (p<0.05). High-dose PGSE administration significantly improved glucose uptake in the femoral muscle of db/db mice by activating both IRS-1/PI3K/AKT/AS160 and AMPK phosphorylation pathways. GLUT4 translocation from the cytosol to the plasma membrane increased 1.7-fold in the PGSE high-dose group. These results suggest that PGSE has potential for development as an antidiabetic agent.

키워드

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