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N-Acetyl-cysteine and Mechanisms Involved in Resolution of Chronic Wound Biofilm.


ABSTRACT: Chronic wounds are a major global health problem with the presence of biofilm significantly contributing to wound chronicity. Current treatments are ineffective in resolving biofilm and simultaneously killing the bacteria; therefore, effective biofilm-resolving drugs are needed. We have previously shown that, together with ?-tocopherol, N-acetyl-cysteine (NAC) significantly improves the healing of biofilm-containing chronic wounds, in a diabetic mouse model we developed, by causing disappearance of the bacteria and breakdown of the extracellular polymeric substance (EPS). We hypothesize that NAC creates a microenvironment that affects bacterial survival and EPS integrity. To test this hypothesis, we developed an in vitro biofilm system using microbiome taken directly from diabetic mouse chronic wounds. For these studies, we chose mice in which chronic wound microbiome was rich in Pseudomonas aeruginosa (97%). We show that NAC at concentrations with pH?

SUBMITTER: Li X 

PROVIDER: S-EPMC7007959 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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<i>N</i>-Acetyl-cysteine and Mechanisms Involved in Resolution of Chronic Wound Biofilm.

Li Xin X   Kim Jane J   Wu Jiabin J   Ahamed Alaa' I AI   Wang Yinsheng Y   Martins-Green Manuela M  

Journal of diabetes research 20200127


Chronic wounds are a major global health problem with the presence of biofilm significantly contributing to wound chronicity. Current treatments are ineffective in resolving biofilm and simultaneously killing the bacteria; therefore, effective biofilm-resolving drugs are needed. We have previously shown that, together with <i>α</i>-tocopherol, <i>N</i>-acetyl-cysteine (NAC) significantly improves the healing of biofilm-containing chronic wounds, in a diabetic mouse model we developed, by causing  ...[more]

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