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2003 Fiscal Year Final Research Report Summary

Adhesion Molecules and Stress with Cardiac Surgery

Research Project

Project/Area Number 13671412
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Thoracic surgery
Research InstitutionNippon Medical School

Principal Investigator

OKUBO Naoko  Nippon Medical School, Department of Surgery II, Instructor, 医学部, 助手 (30277503)

Co-Investigator(Kenkyū-buntansha) OCHI Masami  Nippon Medical School, Department of Surgery II, Professor, 医学部, 教授 (90160887)
Project Period (FY) 2001 – 2003
Keywordssurgical stress / cytokine / heparin / m-RNA / endotoxin shock / endotherial cell / coronary artery bypass grafting / olprinone hydrochloride
Research Abstract

The aim of this study using leukocytes and endothelium was to assess the influence of surgical stress and the effect of protection with drugs. First, we confirmed that heparin have the protective role of endothelium function in rat model of endotoxin shock induced by lipopolysaccharide in vitro. Arteries of rats in heparin group were less relaxation rate by acetylcholine than in control group.
Secondly, we investigated at twenty patients who had coronary artery bypass grafting m-RNA level of cytokine without cardiopulmonary bypass (off-pump CABG) which is accepted as a less invasive technique. Post operative expression of m-RNA for inter leukin-1,8,10, tumor necrosis factor-α, hemo oxygenase-1, platelet endothelial cellular adhesion molecule and Mac-1 in leukocytes of peripheral blood increased significantly in the on-pump group than in the off-pump group of which technique is associated with less invasive. In view of the m-RNA level of proinflammatory cytokines and adhesion molecules, it can be concluded that off-pump CABG is a less invasive technique than on-pump CABG. Direct contact of circulating blood with the synthetics of surfaces of the CPB system may be the main cause of the systemic inflammation.
Finally, we examined the vessel relaxation rate of olprinone hydrochloride, in a piece of radial artery grafts which were harvested to use CABG. It was seen that olprinorie hydrochloride have the function of vessel relaxation the same as papaverine hydrochloride.

  • Research Products

    (2 results)

All Other

All Publications (2 results)

  • [Publications] 大久保 直子: "Comparison of m-RNA Expression for Inflammatory Mediators in Leukocytes between On-pump and Off-pump CABG"Annals of Thoracic and Cardiovascular Surgery. Vol.9. 43-49 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Naoko Okubo, MD, Nobuo Hatori, MD, PhD, Masami Ochi, MD, Shigeo Tanaka, MD: "Comparison of m-RNA expression for Inflammatory Mediators in Leukocyte Between On-pump and Off-pump Coronary Artery Bypass Grafting"Annals of Thoracic and Cardiovascular Surgery. Vol.9,No.1 February. (2003)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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