The Journal of Korean Obstetrics and Gynecology (대한한방부인과학회지)

The Society of Korean Medicine Obstetrics and Gynecology (대한한방부인과학회)
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A Study on Anti-Bone Resorption & Osteoporosis by Taeyoungion-Jahage Extracts

  • Bae, Hyo-Sang (Dept. of Ob & Gyn, College of Oriental Medicine, Dongguk Univ.) ;
  • Cho, Hyung-Lae (Dept. of Ob & Gyn, College of Oriental Medicine, Dongguk Univ.) ;
  • Kim, Dong-Il (Dept. of Ob & Gyn, College of Oriental Medicine, Dongguk Univ.) ;
  • Lee, Tae-Kyun (Dept. of Ob&Gyn, College of Oriental Medicine, Dongguk Univ.) ;
  • Kim, Jun-Ki (Dept. of Pathology, College of Oriental Medicine, Dongguk Univ.) ;
  • Shin, Jung-Sik (Dept. of Ob & Gyn, College of Oriental Medicine, Dongguk Univ.)
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  • 신정식 (동국대학교 한의과대학 대학원)
  • Published : 2002.11.30
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Abstract

Recombinant human $interleukin-1{\beta}$ $(rhIL-1{\beta})$ regulates several activities of the osteoblast cells derived from mouse calvarial bone explants in vitro. $rhIL-1{\beta}$ stimulated cellular proliferation and the synthesis of prostaglandin $E_2(PGE_2)$ and plasminogen activator activity in the cultured cells in a dose-dependent manner. However, the induction of osteocalcin synthesis and alkaine phosphatase activity in response to vitamine D, two characteristics of the osteoblast phenotype, were antagonized by $rhIL-1{\beta}$ over a similar dose range. This study supports the role of $IL-1{\beta}$ in the pathological modulation of bone cell metabolism, with regard to implication in the pathogenesis of osteoporosis by $IL-1{\beta}$. When the mouse calvarial bone cells were used, the bone resorption induced by $IL-1{\beta}$ was strongly inhibited by calcitonin treatment, indicating osteoclast-mediated bone resorption. On the other hand, the medicinal extracts of Taeyoungjon-Jahage (T.Y.J-J.H.G extracts) was tested for whether they could inhibit $IL-1{\beta}-induced$ $PGE_2$ production. Cell viability was not significantly affected by treatment with the indicated concentration of the extracts. The T.Y.J.-J.H.G. extracts were shown to have the inhibitory effects against the synthesis of $PGE_2$. We also examined the effect of the pretreatment with a various concentrations of the T.Y.J.-J.H.G. extracts then treated the $PGE_2-induction$ agents. Pretreatment of the T.Y.J.-J.H.G. extracts for 1 h, which by itself had little effect on cell survival, did not enhance the synthesis of $PGE_2$. Furthermore, the T.Y.J-J.H.G. extracts were shown to have the protective effects against plasminogen dependent fibrinolysis induced by the bone resorption agents of $IL-1{\beta}$. Pretreatment of the T.Y.J.-J.H.G. extracts for 1 h did not enhance the plasminogen dependent fibrinolysis. Finally, calcitonin showed the inhibitory activity the $IL-1{\beta}-stimulated$ bone resorption in the mouse calvarial bone cells having both of the osteoblast and osteoclast cells. Seemingly, pretreatment of the T.Y.J.-J.H.G. extracts for 1 h reduced the bone resorption. These results clearly indicated that calcitonin and T.Y.J.-J.H.G. extracts play key roles in inhibition of the osteoclast-mediated bone resorption.

유전자 재조합으로 제조한 사람 $interleukin-1{\beta}$ $(rhIL-1{\beta})$는 생쥐의 calvarial 골세포계에서 분리한 골아세포에 여러 가지 조절기능을 갖는 것으로 알려져 있다. 본 연구에서 $rhIL-1{\beta}$가 농도의존적으로 골세포에 영향을 주는지 해명하기 위하여 배양된 골아세포의 세포증식과 prostaglandin $E_2$합성 그리고 plasminogen activator활성에 대한 영향을 검토한 결과 이들을 촉진하였다. 그러나 비타민D에 따라 반응하는 골아세포의 특징으로 알려진 osteocalcin생합성과 alkaine phosphatase활성의 유도생성은 $rhIL-1{\beta}$에 의해 오히려 길항적이었다. 이러한 결과는 골세포대사의 병리학적인 조절과정에서 $IL-1{\beta}$가 골다공증의 병리학적 역할을 규명하는 새로운 결과이다. $IL-1{\beta}$에 의한 골흡수현상이 생쥐의 calvarial골세포에서 calcitonin처리로 크게 억제되어, 결과적으로 이러한 결과는 $IL-1{\beta}$에 의해 유발되는 골재흡수란 osteoclast에 의한다는 사실을 시사하였다. 한편, 한방에서 골다공증치료와 예방에 사용되는 대영전-자하거추출물의 기능을 해명하기 위하여, $IL-1{\beta}$-유발 $PGE_2$합성만을 특이적으로 저해하였다. 또한, 대영전-자하거 extract을 1시간 동안 여러 가지 농도로 전처리하고 다음으로 $PGE_2$-유도시약을 처리한 결과, $PGE_2$합성을 억제하였으며 동시에 $IL-1{\beta}$에 의해 유도된 plasminogen 의존적인 fibrinolysis을 억제하는 보호효과가 인정되었다. 한편, calcitonin처리가 $IL-1{\beta}$-촉진 골재흡수에 대한 저해활성을 보였으며 이러한 결과들은 calcitonin과 대영전-자하거 extract이 osteoclast매개성 골재흡수의 억제에 핵심적인 역할을 함을 시사하며 한방치료제로서의 근거를 제시하였다고 사료된다.

Keywords

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