Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Effects of Melatonin on Preventing Postoperative Intraperitoneal Adhesion Formation in Rats

Rat에서 술후 복강 유착방지에 대한 melatonin의 효과

  • Lee, Seung-Chan (Department of Veterinary Medicine, Kyungpook National University) ;
  • Kim, Jung-Eun (Department of Veterinary Medicine, Kyungpook National University) ;
  • Kwon, Young-Sam (School of Veterinary Medicine, University of Wisconsin-Madison) ;
  • Jang, Kwang-Ho (Department of Veterinary Medicine, Kyungpook National University)
  • 이승찬 (경북대학교 수의과대학) ;
  • 김정은 (경북대학교 수의과대학) ;
  • 권영삼 (위스콘신-매디슨 대학 수의과대학) ;
  • 장광호 (경북대학교 수의과대학)
  • Published : 2006.09.30
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Abstract

This study was performed in rats to find the minimum dose of melatonin that can effectively prevent the formation of postoperative intraperitoneal adhesions. Forty-two Sprague Dawley male rats were divided into six groups consisting of 7 rats, respectively. After celiotomy, five abrasions of $0.5{\times}1cm$ area were made on the antimesenteric serosal surface of the colon with a scalpel blade. The abdominal cavity was filled with 1 ml of solution containing 1 mg/kg(Mel 1), 3 mg/kg(Mel 3), 10 mg/kg(Mel 10), 30 mg/kg(Mel 30) and 5% ethanol solution(sham) through the catheter, using a sterile syringe before abdominal closure. Control group was given no adjuvant. The locations and values of adhesion were assessed through the second operation on the 14th day after the first operation. The adhesions were located on serosa to mesentery(54 of 210, 25.7%), serosa to serosa(44 of 210, 21%), serosa to omentum (12 of 210, 5.7%) and serosa to parietal peritoneum(0 of 210, 0%). The incidences of adhesion in Control, Sham, Mel 1, Mel 3, Mel 10 and Mel 30 were 68.6%, 91.4%, 57.1%, 60.1%, 17.1% and 20%, respectively. The values of adhesion separation in Mel 10 and Mel 30 group were lower than those in other groups. However, there was no significant(p<0.05) between Mel 10 and Mel 30 group. This study showed that 10 mg/kg of melatonin were effective in reducing the intraperitoneal adhesion.

랫트에서 melatonin(N-acetyl-5 methoxytyptamine)이 복강 내 유착 형성 방지에 미치는 효과를 알아보고자 본 실험을 수행하였다. 총 42마리의 수컷, Sprague Dawley 랫트를 유착 유도 후 무처치 대조군, 5% ethanol 용액을 투여한 sham군, melatonin 1 mg/kg 처치군(Mel 1군), melatonin 3mg/kg 처치군(Mel 3군), melatonin 10mg/kg 처치군(Mel 10군), melatonin 30mg/kg 처치군(Mel 30군)등 6개 군으로 분류하고 각 군에 7마리씩 배치하였다. 정중개복 후 맹장을 확인하고 맹장에서 0.5cm지점의 오름 결장에서 시작하여 3cm 간격으로, 장간막 반대측 장막 5곳에 $0.5{\times}1cm$크기로 찰과상을 생성하여 유착을 유도하였다. 대조군은 어떤 처치도 없이 복강을 폐쇄하였으며 sham군은 5% ethanol 1ml, 나머지 군은 각각의 용량에 맞춰 5% ethanol 에 녹인 melatonin용액 1 ml를 복강 폐쇄 전 주입하였다. 수술 2주 후에 유착발생빈도 및 정도를 평가하였다. 유착장소는 전군에서 장막-장간막(25.7%), 장막-장막(21%), 장막-대망막(5.7%)순으로 발생하였다. 유착발생빈도는 Mel 10군이 17.1%로 대조군 68.6%, sham군 91.4%, Mel 1군 57.1%, Mel 3군 60.1%에 비해 낮았다. 그러나 Mel 30군은 20%로 유의적인 차이를 보이지 않았다. 유착형성은 대조군, Sham군, Mel 1군, Mel 3군, Mel 10군, Mel 30군에서 각각 $264.7{\pm}140.2,\;378.9{\pm}153.2,\;116.1{\pm}94,\;29.4{\pm}30.3,\;45.1{\pm}44$로 Mel 10군과 Mel 30군이 유의적인 감소를 보였으나(p<0.05) 이들 두 군 간의 차이는 나타나지 않았다. 이상의 결과로, 랫트에서 복강수술 후 melatonin 10mg/kg투여가 복강 내 유착 방지에 효과적이라고 생각된다.

Keywords

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