대한임상검사과학회지 (Korean Journal of Clinical Laboratory Science)

  • 제56권1호
  • /
  • Pages.52-58
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  • 2024
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  • 1738-3544(pISSN)
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  • 2288-1662(eISSN)
대한임상검사과학회 (Korean Society for Clinical Laboratory Science)
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다이오드 레이저와 PhotoMed, Methyl Pheophorbide A, Radachlorin®을 이용한 녹농균에 대한 항균 광역학 요법

Antimicrobial Photodynamic Therapy on Pseudomonas aeruginosa Using a Diode Laser and PhotoMed, Methyl Pheophorbide A, or Radachlorin®

  • 송영규 (닥터아이앤비 광역학치료연구센터) ;
  • 육근돌 (대전보건대학교 임상병리과) ;
  • 김지원 (대전보건대학교 방사선과)
  • Young-Kyu SONG (PDT Research Center, Dr.inB Co.) ;
  • Keun-Dol YOOK (Department of Clinical Laboratory Science, Daejeon Health University) ;
  • Ji-Won KIM (Department of Radiological Science, Daejeon Health University)
  • 투고 : 2024.01.28
  • 심사 : 2024.02.07
  • 발행 : 2024.03.31
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초록

광역학 요법(photodynamic therapy)은 특정 파장의 빛에 의해 활성화되는 광민감제(photosensitizer)를 사용하여 세포 내 산소를 활성화시키는 치료 방법으로, 항생제 내성균에 의한 상처 감염의 치료에 유망한 접근 방법이다. 일반적으로 건강한 사람에게 비병원성인 녹농균(Pseudomonas aeruginosa, P. aeruginosa)은 특정 병원성 징후를 보이지 않지만, 피부 손상이나 면역력이 저하된 사람들에서는 패혈증과 같은 심각한 질병을 유발할 수 있다. 항생제는 P. aeruginosa 감염에 대한 전통적인 치료법이나 약물 오용으로 인한 항생제 내성의 증가는 이러한 감염을 관리하는 데 큰 어려움을 준다. 본 연구에서는 P. aeruginosa의 억제제로서 광민감제(PhotoMed, Methyl pheophorbide A, Radachlorin®)와 다이오드 레이저를 이용한 광역학 치료 효과를 조사하는 것을 목표로 했다. P. aeruginosa 현탁액과 광민감제(PhotoMed, Methyl pheophorbide A, Radachlorin®)를 페트리 접시에 접종하여 30분 후 다이오드 레이저를 사용하여 3 J/cm2의 에너지 밀도로 조사했다. 그 결과, P. aeruginosa는 PhotoMed에서 79.65%, Methyl pheophorbide A에서 47.36%, Radachlorin®에서 40.91%의 사멸률을 보였다. 이번 연구는 P. aeruginosa를 억제하기 위한 가장 효과적인 접근법이 PhotoMed와 다이오드 레이저를 이용한 광역학 치료임을 보여준다.

Photodynamic therapy (PDT) activates intracellular oxygen using a photosensitizer activated by light of a specific wavelength and is a potential means of treating wound infections caused by antibiotic-resistant bacteria. Pseudomonas aeruginosa (P. aeruginosa) is typically non-pathogenic in healthy individuals but can induce severe illnesses like sepsis in the immunocompromised. Antibiotics have been conventionally used to treat P. aeruginosa infections, but increasing antibiotic resistance caused by drug misuse poses a growing challenge to the management of these infections. This study aimed to investigate the ability of PDT using photosensitizers (PhotoMed, Methyl pheophorbide A, or Radachlorin®) and a diode laser to inhibit P. aeruginosa. Suspensions of P. aeruginosa and a photosensitizer were inoculated into Petri dishes and incubated for 30 minutes. Samples were then irradiated with the laser at 3 J/cm2, and after incubation, colony areas were measured. P. aeruginosa killing rates were 79.65% for PhotoMed, 47.36% for Methyl pheophorbide A, and 40.91% for Radachlorin®. This study shows that PDT using a diode laser and a photosensitizer constitutes an effective practical therapeutic approach for inhibiting P. aeruginosa.

키워드

과제정보

This paper was supported by the Meister support project of Daejeon Health University in 2023.

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