The Comparison of the Effect of Cigarette and Stop Smoking-aiding Cigarette on Release of IL-6 from Bronchial Epithelial Cell

일반담배(Cigarette)와 금연 보조 담배(금연초, 허브담배, 쑥 담배)의 기관지 상피세포에서 IL-6유리 효과비교

  • Kim, Myoung Chan (Department of Internal Medicine, Seoul Adventist Hospital) ;
  • Jung, Jeil (Department of Internal Medicine, Seoul Adventist Hospital) ;
  • Jung, Jong Hoon (Department of Internal Medicine, WonKwang University, School of Medicine) ;
  • Kim, Hak Ryul (Department of Internal Medicine, WonKwang University, School of Medicine) ;
  • Yang, Sei Hoon (Department of Internal Medicine, WonKwang University, School of Medicine) ;
  • Jeong, Eun Taik (Department of Internal Medicine, WonKwang University, School of Medicine) ;
  • Kim, Hui Jung (WonKwang University, School of Medicine, Sanbon Medical center)
  • 김명찬 (서울위생병원내과) ;
  • 정재일 (서울위생병원내과) ;
  • 정종훈 (원광대학교 의과대학 내과학교실) ;
  • 김학렬 (원광대학교 의과대학 내과학교실) ;
  • 양세훈 (원광대학교 의과대학 내과학교실) ;
  • 정은택 (원광대학교 의과대학 내과학교실) ;
  • 김휘정 (원광대학교 의과대학 산본병원)
  • Received : 2005.10.05
  • Accepted : 2005.10.31
  • Published : 2005.11.30

Abstract

Background and Aims : Cigarette smoking induces an inflammatory response in the airways, which may play a key role in the pathogenesis of chronic obstructive pulmonary disease. Interleukin-6 (IL-6) is one of the cytokines that plays an important role in inducing bronchial inflammation. The aim of this study was to determine if the level of the pro-inflammatory cytokine, Interleukin-6, is increased when the bronchial epithelial cells are exposed to a cigarette smoke extract (CSE) and an extract from stop smoking-aiding cigarettes, and examined the safety of these commercially available stop smoking-aiding cigarettes. Method : Bronchial epithelial cells were exposed to CSE from cigarette and stop smoking-aiding cigarettes for 24 hours. ELISA was used to measure the IL-6 levels in the supernatant from each condition. The IL-6 mRNA levels were measured by Taqman Real time RT-PCR. N-acetyl-L-cysteine(NAC) was added to each condition to determine if NAC can inhibit the release of IL-6 from the bronchial epithelial cells when they are exposed to CSE from cigarette and stop smoking-aiding cigarettes. Result : When bronchial epithelial cells were exposed to a CSE from cigarettes and stop smoking-aiding cigarettes, each type of CSE stimulated IL-6 production from the bronchial epithelial cells. The IL-6 mRNA level in the Bronchial epithelial cells was also elevated and NAC was found to inhibit the release of IL-6 from bronchial epithelial cells when they were exposed to the CSE from cigarettes and stop smoking-aiding cigarettes. Conclusion : Commercially available stop smoking-aiding cigarette can induce bronchial inflammation and can be harmful to smokers. Therefore, the safety of these cigarettes for smoking cessation should be evaluated.

연구 배경 : 우리나라에서는 다른 나라에 비해 약초 등을 이용해 만든 흡연대용품으로 금연을 시도하려는 흡연자들도 많고 이에 따라 여러 가지 다양한 제품 등이 판매되고 있는데 이들의 기관지, 폐에 대한 안정성에 관한 연구는 아직 부족한 상황이다. 특히 흡연자중 일부는 이런 금연 보조제를 사용하는 과정에서 이들을 상용하게 되어 시판되는 금연 보조담배의 장기적 사용시 인체의 안정성 여부에 대한 연구는 중요하리라 사료된다. 방 법 : 일반담배 및 금연 보조담배 3종의 담배연기추출물(cigarette smoke extract, CSE)을 기관지 상피세포에 24시간 노출 후 배양액에서 IL-6를 측정하였고 일반담배 및 허브담배, 쑥담배 노출 후 세포에서 IL-6 m RNA를 측정하여 비교하였다. 항산화 효과를 가진 N-acetyl-L-cysteine(NAC)를 일반 담배 및 금연보조담배 추출물에 함께 투여해 IL-6의 증가 억제여부를 보았다. 결 과 : 대조군에 비해 일반담배 및 금연보조담배3종에서 기관지 상피세포에 노출 시에 모두 의미 있는 IL-6증가를 관찰할 수 있었고, IL-6 m RNA도 같은 경향으로 증가 하였다. NAC를 함께 투여 시 일반 담배 및 허브담배 금연초에서는 IL-6의 증가를 의미 있게 억제하였지만 쑥담배에서는 억제하지 못하였다. 결 론 : 현재 우리나라에서 시판되고 있는 금연 보조담배 3종(허브담배, 쑥담배, 금연초)은 일반담배처럼 기관지 상피세포에 염증을 유발할 수 있어 장기적 사용시 인체의 안정성 여부에 대한 연구는 중요하리라 사료된다.

Keywords

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