The Korean Journal of Vision Science (대한시과학회지)

The Korean Society of Vision Science (대한시과학회)
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Acute Cytotoxicity Testing of Polyhexamethylene-biguanide (PHMG) and Epigallocatechin-gallate (EGCG) Mixture on the Cultured Human Corneal Epithelial Cell

보존제 PHMB(polyhexamethylene biguanide)-EGCG(epigallocatechin gallate) 혼합물의 각막상피세포 급성독성 평가

  • 김남열 (한국파스퇴르연구소) ;
  • 이군자 (을지대학교 보건과학대학 안경광학과)
  • Received : 2018.11.28
  • Accepted : 2018.12.21
  • Published : 2018.12.31
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Abstract

Purpose : To evaluate the acute cytotoxic effect of polyhexamethylene biguanide (PHMB), epigallocatechin gallate (EGCG) and PHMB/EGCG mixture on the cultured human corneal epithelial cell (HCEpiC). Methods : HCEpiCs were cultured in the media of HCEpiC containing 0.00001~0.005% PHMB, 0.001~5% EGCG and 0.00005% PHMB/0.05% EGCG mixture respectively for 30, 60, 120 and 240 min. Cultured HCEpiCs were fixed and stained with Draq5 and cell viability and apoptosis were evaluated using confocal microscope and ImageXpress $Ultra^{TM}$. Results : Cultured HCEpiC did not show cytotoxic effect at below 0.00005% PHMB and below 0.05% EGCG concentration. In the media containing 0.00005% PHMB/0.05% EGCG, acute cytototoxic effect was not found, whereas damaged HCEpiCS were increased and survival cells were decreased in the media incubated for 240 min. Conclusion : The mixture of 0.00005% PHMB/0.05% EGCG showed non acute cytotoxic effect on the cultured HCEpiCs, however it is needed to investigate its chronic cytotoxic effect.

목적 : 항균제 polyhexamethylene Biguanide(PHMB), epigallocatechin gallate(EGCG) 및 PHMB/EGCG 혼합물의 각막상피세포(primary human corneal epithelial cells, HCEpiCs)에 대한 급성독성을 평가하고자 하였다. 방법 : 각막상피세포를 0.00001~0.005% PHMB, 0.001~5% EGCG 및 0.00005% PHMB/0.05% EGCG 혼합물이 각각 포함된 배양액에서 30분, 60분, 120분 및 240분 동안 배양하였다. 배양한 각막상피세포를 고정한 다음 Draq 5로 염색하고 공초점현미경과 ImageXpress $Ultra^{TM}$를 이용하여 세포형태를 관찰하여 세포생존율과 세포자살(apoptosis)을 비교하였다. 결과 : 배양된 각막상피세포는 0.00005% 이하의 PHMB 농도 및 0.05% 이하의 EGCG 농도에서는 세포 독성이 나타나지 않았다. 0.00005% PHMB/0.05% EGCG 혼합물이 포함된 배양액에서 급성 세포독성은 관찰되지 않았으나 240분 배양시킨 경우에는 손상된 각막상피세포 수가 증가하고 생존 세포의 수는 감소하였다. 결론 : 항균 시너지 효과를 갖는다고 보고된 0.00005% PHMB/0.05% EGCG 혼합물의 경우 각막상피세포에 대한 급성독성은 없었으나 만성효과에 대해서는 추가적인 연구가 필요할 것으로 생각된다.

Keywords

References

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