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        마우스 피부에서 ALA 및 ALA 에스테르 유도체에 의한 Protoporphyrin 9의 합성 및 발현

        김형성 ( Hyung Sung Kim ),나의영 ( Eui Young Na ),윤숙정 ( Sook Jung Yun ),김성진 ( Seong Jin Kim ),이승철 ( Seung Chul Lee ),원영호 ( Young Ho Won ),박형련 ( Hyoung Ryun Park ),이지범 ( Jee Bum Lee ) 대한피부과학회 2009 대한피부과학회지 Vol.47 No.6

        Background: Photodynamic therapy with using 5-aminolevulinic acid (ALA) is a good noninvasive treatment modality that can treat several cutaneous diseases. Yet hydrophilic ALA is not able to easily penetrate the cellular membrane or the lipid layer of the skin. Thus, various ALA alkyl esters been developed. Objective: We studied whether novel ALA unsaturated alkyl esters synthesize more protoporhyrin IX (PpIX) than does ALA in mouse skin tissues. Methods: We applied 5, 10, 15% ALA and ALA esters ointment to the skin of shaved mice, respectively. We harvested the skin tissue, made a preparation and did quantitative analysis according to the fluorescent spectrum for determining the amount of PpIX synthesized in the skin after the elapse of 1 hour and 3 hours, respectively. Results: No matter what the sort or the concentration of the ALA and ALA ester was, the amount of synthesized PpIX increased more after the elapse of 3 hours than that after 1 hour. ALA (hetenyl-, petenyl-, butenyl-, methyl-) esters tended to produce a much greater amount of PpIX than ALA. According to the results of the comparative study with using 5%, 10% and 15% of ALA and ALA esters ointment, the amount of synthesized PpIX was not proportional to the concentration of the ALA and the ALA esters, even though the ALA esters produced more PpIX than the ALA. Conclusion: We found that the ALA unsaturated alkyl esters are a good photosensitizer and they are similar to ALA-me, which is an ALA saturated alkyl ester that induces more PpIX, an actual photosensitizer, than ALA can. (Korean J Dermatol 2009;47(6):683∼689)

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