The Journal of the Korea Contents Association (한국콘텐츠학회논문지)

The Korea Contents Association (한국콘텐츠학회)
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Antimicrobial Effects of Photodynamic Therapy using Photofrin Against Staphylococcus aureus and Staphylococcus epidermidis

포토프린을 이용한 황색포도알균과 표피포도알균에 대한 광역학 치료의 항균효과

  • 권필승 (원광보건대학교 임상병리과)
  • Received : 2012.11.15
  • Accepted : 2012.12.18
  • Published : 2013.02.28
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Abstract

Photodynamic therapy(PDT) has been recommended as an alternative therapy for various diseases including microbial infection. The aim of the present study is to evaluate the antimicrobial effect of PDT using a photofrin and home made 630 nm Light emitting diode(LED) against Staphylococci. To examine the antimicrobial effect of photofrin-mediated PDT against Staphylococcus aureus and Staphylococcus epidermidis colony forming units(CFU) quantification, and bacterial viability using flow cytometry were formed. The CFU quantification results of S. aureus and S. epidermidis were 1 cfu/ml and 16 cfu/ml of average, respectively, after PDT application with photofrin of $50{\mu}g/m{\ell}$ and 630 nm LED and energy density of $18J/cm^2$. In addition, S. aureus and S. epidermidis isolates yielded forward-scatter (FSC) and fluorescence intensity (FI) differences on flow cytometry (FCM) after PDT. S. aureus and S. epidermidis cell size(FSC) increased 8.96% and 5.55% respectively, after PDT. Also the numbers of dead cell of S. aureus and S. epidermidis were a 39% and 61% incerased. These results suggest that photofrin-mediated PDT can be an effective alternative treatment for antibacterial therapy.

광역학 치료는 미생물의 감염을 포함한 다양한 질병을 위한 대안치료로 권장된다. 이 연구의 목적은 포도알균속에 대한 직접제작한 630 nm 발광다이오드와 포토프린을 사용하여 광역학 치료의 항균효과를 평가하고자 하였다. 포토프린을 이용한 광역학 치료는 황색포도알균과 표피포도알균에 대한 항균효과를 집락형성수 정량법과 세균 생육능은 유세포분석기를 이용하여 시험하였다. 황색포도알균과 표피포도알균의 집락형성수 결과는 포토프린 $50{\mu}g/m{\ell}$와 630 nm 발광다이오드로 에너지밀도 $18J/cm^2$ 조건으로 광역학 치료 적용 후 각각 평균 1 cfu/ml와 평균16 cfu/ml이다. 추가로 광역학 치료 후 황색포도알균과 표피포도 알균을 유세포분석기로 세포의 크기와 형광강도를 측정하였다. 황색포도알균과 표피포도알균의 세포크기는 광역학 치료 후 평균 8.96% 5.55%씩 각각 증가하였고, 세균의 죽은세포는 각각 39%와 61%로 증가하였다. 이 결과로 포토프린을 이용한 광역학 치료는 항균치료의 방법으로 효과적인 방법이 될 수 있음을 제의한다.

Keywords

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