Effect of Eucommiae Cortex on Hind Limb Muscle Atrophy of Sciatic Nerve Transectioned Rats

두충이 좌골신경손상 흰쥐의 후지 근육위축에 미치는 영향

  • Cho, Jae-Hun (Department of Neuroscience and Brain Disease, Graduate School of East-West Medicine, Kyung Hee University) ;
  • Kim, Kon-Sik (Department of Neuroscience and Brain Disease, Graduate School of East-West Medicine, Kyung Hee University) ;
  • Cha, Jae-Deog (Department of Anatomy & Institute of Oriental Medicine, College of Oriental Medicine, Kyung Hee University) ;
  • Lee, Hyun-Sam (Department of Anatomy & Institute of Oriental Medicine, College of Oriental Medicine, Kyung Hee University) ;
  • Choi, Hyeon (Hamsoa Pharmaceutical Co. R&D Center) ;
  • Jung, Hyuk-Sang (Department of Anatomy & Institute of Oriental Medicine, College of Oriental Medicine, Kyung Hee University) ;
  • Sohn, Nak-Won (Department of Neuroscience and Brain Disease, Graduate School of East-West Medicine, Kyung Hee University) ;
  • Sohn, Young-Joo (Department of Gynecology, College of Oriental Medicine, Sangji University)
  • 조재헌 (경희대학교 동서의학대학원 신경과학 및 뇌질환) ;
  • 김건식 (경희대학교 동서의학대학원 신경과학 및 뇌질환) ;
  • 차재덕 (경희대학교 한의과대학 해부학교실 & 한의학연구소) ;
  • 이현삼 (경희대학교 한의과대학 해부학교실 & 한의학연구소) ;
  • 최현 ((주)함소아제약 연구개발센터) ;
  • 정혁상 (경희대학교 한의과대학 해부학교실 & 한의학연구소) ;
  • 손낙원 (경희대학교 동서의학대학원 신경과학 및 뇌질환) ;
  • 손영주 (상지대학교 한의과대학 부인과학교실)
  • Published : 2008.12.25

Abstract

In oriental medicine, it is known that Eucommiae Cortex (EC) has strengthening and rehabilitative effects on the bone-muscle dysfunction. This study aimed to evaluate the effect of EC on the skeletal muscle atrophy. The muscle atrophy was induced by unilateral transection of the sciatic nerve in Sprague-Dawley rats. EC (water-extract, 170mg/100 g body weight) was treated once a day for 12 days. In this study, the effect of EC examined the muscle weight of hind limb, cross section areas of muscle fibers, fiber type compositions, apoptosis related factors (Bax and Bcl-2). EC reduced muscle atrophy in soleus (SOL), medial gastrocnemius (MGT), extensor digitorum longus, and tibialis posterior significantly in the damaged hind limb. EC increased type-I muscle fibers and decreased type-II muscle fibers significantly in SOL of the damaged hind limb. EC enlarged cross section areas of type-I and type-II muscle fibers significantly in SOL. EC enlarged cross section areas of type-I and type-II muscle fibers significantly in. EC reduced apoptotic nuclei and atrophic muscle fibers in SOL and MGT. EC reduced Bax positive muscle nuclei in SOL and MGT. EC up-regulated Bcl-2 positive muscle fibers in SOL and MGT. These results suggest that EC has an anti-atrophic effect and anti-apoptotic effect against myonuclear apoptosis induced by the peripheral nerve damage.

Keywords

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