Abstract
Photodynamic antimicrobial chemotherapy (PACT) is an effective method for killing bacterial cells in view of the increasing problem of multiantibiotic resistance. We herein reported the PACT effect on bacteria involved in skin infections using a zinc phthalocyanine derivative, pentalysine β-carbonylphthalocyanine zinc (ZnPc-(Lys)5). Compared with its anionic ZnPc counterpart, ZnPc-(Lys)5 showed an enhanced antibacterial efficacy in vitro and in an animal model of localized infection. Meanwhile, ZnPc-(Lys)5 was observed to significantly reduce the wound skin blood flow during wound healing, indicating an anti-inflammation activity. This study provides new insight on the mechanisms of PACT in bacterial skin infection.
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