4.2 Article

Synergistic Effects of Quercetin-Modified Silicone Gel Sheet in Scar Treatment

期刊

JOURNAL OF BURN CARE & RESEARCH
卷 43, 期 2, 页码 445-452

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OXFORD UNIV PRESS
DOI: 10.1093/jbcr/irab100

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资金

  1. Hangzhou Medical and Health Science and Technology Project [B20200432]
  2. National Nature Science Foundation of China [81801912, 81671911]

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Both silicone gel and quercetin are effective in scar treatment, but their mechanisms of action differ. This study successfully developed a silicone gel sheet that releases quercetin in a sustained manner. The combination of quercetin-modified silicone gel sheet was found to be more effective in inhibiting cell proliferation in scar tissue than either treatment alone.
Both silicone gel and quercetin are effective in scar treatment but have different action mechanisms. Quercetin is mainly applied in the gel form and can lead to poor adhesion of silicone gel sheet; therefore, they cannot be combined in clinical use. In this study, a silicone gel sheet that releases quercetin in a sustained manner for 48 hours was successfully developed. Four round scars (empty set: 1 cm) were made in the ears of New Zealand albino rabbits (n = 10). After scar healing, the rabbits were divided into four groups: blank control group with no treatment, silicone gel sheet group with dressing change every 2 days, quercetin group with dressing change three times daily, and combination treatment group with dressing change every 2 days. Scar assessment was performed 3 months later. Transepidermal water loss showed no difference between the combination treatment group and the silicone gel sheet group, but was lower than that in the quercetin group and the blank control group. Immunohistochemistry of CD 31 and proliferating cell nuclear antigen showed the following results: combination treatment group < silicone gel sheet group = quercetin group < blank control group. Polymerase chain reaction results showed that the expression of type-I and type-III collagen in the combination treatment group and the quercetin group was significantly lower than that in the other two groups. Thus, quercetin-modified silicone gel sheet combines the advantages of the two treatments and is more effective at inhibiting cell proliferation in scar tissue than either of the two treatments alone.

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