The significance of vascular endothelial growth factor(VEGF) in children with asthma and pneumonia

소아 천식과 폐렴에서 혈청 vascular endothelial growth factor 농도의 의의

  • Choi, Seong Hwan (Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Shim, Jung Yeon (Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Yoo, Myung Hwan (Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Kim, Deok Soo (Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Shim, Jae Won (Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Jung, Hye Lim (Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Park, Moon Soo (Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine)
  • 최성환 (성균관대학교 의과대학 강북삼성병원 소아과) ;
  • 심정연 (성균관대학교 의과대학 강북삼성병원 소아과) ;
  • 유명환 (성균관대학교 의과대학 강북삼성병원 소아과) ;
  • 김덕수 (성균관대학교 의과대학 강북삼성병원 소아과) ;
  • 심재원 (성균관대학교 의과대학 강북삼성병원 소아과) ;
  • 정혜림 (성균관대학교 의과대학 강북삼성병원 소아과) ;
  • 박문수 (성균관대학교 의과대학 강북삼성병원 소아과)
  • Received : 2005.09.15
  • Accepted : 2005.10.19
  • Published : 2006.02.15

Abstract

Purpose : Vascular endothelial growth factor(VEGF) is a key cytokine for controlling vascular permeability and angiogenesis, which is one of the major findings in airway remodeling. However, it is not well known if it is associated with acute lower respiratory tract disease such as lobar pneumonia. The aim of this study is to compare serum VEGF levels in patients with asthma according to its severity and duration of cough, and to compare its levels with children with lobar pneumonia. Methods : Using a sandwich enzyme-linked immunosorbent assay, the serum VEGF levels were measured in 16 mild asthmatics, 14 moderate to severe asthmatics, six children with lobar pneumonia, and 22 control subjects. The asthmatics were also classified into three groups according to the duration of cough. Serum VEGF levels were compared in each group. Results : Serum VEGF levels were significantly increased in the children with moderate to severe asthma and lobar pneumonia compared to the children with mild asthma and control subjects. Serum VEGF levels were higher in children with chronic coughs of more than two weeks than in children with coughs lasting less than two weeks. Serum levels of VEGF showed positive correlations with blood platelet and white blood cell counts. Conclusion : VEGF increased according to the severity of asthma and duration of cough in children with asthma. It may play an important role not only in chronic airway inflammation, but also in the acute inflammation in children with lower respiratory tract disease.

목 적 : 천식은 기도의 만성 염증성 질환으로 기도개형은 천식에서 가장 중요한 병태생리이다. 혈관의 신생 및 혈관투과성을 증가시키는 것으로 알려진 VEGF가 천식의 중증도와 기침의 지속기간에 따라 차이가 있는지 알아보고, 폐렴과 같은 급성 하기도 질환에서도 증가하는지 알아보고자 하였다. 방 법 : 2001년 1월부터 2002년 1월까지 강북삼성병원 소아과에 천식 및 폐렴으로 내원한 36명의 환아와 건강검진을 위해 소아과 외래를 방문한 건강한 어린이 22명을 대상으로 하였다. 천식 환아는 중증도에 따라 경증 천식군과 중등증 및 중증 천식의 두 군으로 나누고, 또한 내원 시까지의 기침의 지속기간에 따라 2주 미만, 2주에서 4주, 4주 이상의 세 군으로 분류한 후 각각 혈청 VEGF 농도를 비교하였으며, 혈소판 및 백혈구수, CRP, IgE 농도, 총호산구수, 대상군의 나이와의 상관관계를 조사하였다. 결 과 : 평균 혈청 VEGF 농도는 경증 천식군, 중등증 및 중증 천식군, 폐렴군, 대조군에서 각각 $278.4{\pm}191.6pg/mL$, $751.6{\pm}534.2pg/mL$, $775.6{\pm}340.0pg/mL$, $311.2{\pm}198.1pg/mL$로 중등증 및 중증 천식군과 폐렴군에서 경증 천식군 및 대조군보다 혈청 VEGF 농도가 유의하게 높았다(P<0.05). 기관지 천식을 앓고 있는 환아 중 기침 기간에 따라 혈청 VEGF 농도를 비교해 본 결과 2주 이상 4주 이하 동안 기침을 한 군 및 4주 이상 기침을 한 군에서 혈청 VEGF 농도는 각각 $709.2{\pm}589.3pg/mL$, $896.9{\pm}594.9pg/mL$로 2주 미만 기침을 한 그룹의 $307.1{\pm}198.4pg/mL$에 비하여 의미있게 높았다(P<0.05). 혈청 VEGF 농도와 혈소판 수치 및 백혈구수와는 양의 상관관계를 보였으며(P<0.05), CRP, IgE 농도, 총호산구수 및 대상군의 나이와는 의미 있는 상관관계가 없었다. 결 론 : 혈청 VEGF는 기관지 천식에서 중증도 및 염증의 지속기간과 연관이 있으며, 급성 하기도 질환의 급성 염증반응에도 중요한 역할을 한다.

Keywords

References

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