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Salvianolic Acid B Attenuates Hypertrophic Scar Formation In Vivo and In Vitro

  • Original Article
  • Basic Science/Experimental
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Abstract

Background

Hypertrophic scars (HTSs) are a fibroproliferative disorder that occur following skin injuries. Salvianolic acid B (Sal-B) is an extractant from Salvia miltiorrhiza that has been reported to ameliorate fibrosis in multiple organs. However, the antifibrotic effect on HTSs remains unclear. This study aimed to determine the antifibrotic effect of Sal-B in vitro and in vivo.

Methods

In vitro, hypertrophic scar-derived fibroblasts (HSFs) were isolated from human HTSs and cultured. HSFs were treated with (0, 10, 50, 100 μmol/L) Sal-B. Cell proliferation and migration were evaluated by EdU, wound healing, and transwell assays. The protein and mRNA levels of TGFβI, Smad2, Smad3, α-SMA, COL1, and COL3 were detected by Western blots and real-time PCR. In vivo, tension stretching devices were fixed on incisions for HTS formation. The induced scars were treated with 100 μL of Sal-B/PBS per day according to the concentration of the group and followed up for 7 or 14 days. The scar condition, collagen deposition, and α-SMA expression were analyzed by gross visual examination, H&E, Masson, picrosirius red staining, and immunofluorescence.

Results

In vitro, Sal-B inhibited HSF proliferation, migration, and downregulated the expression of TGFβI, Smad2, Smad3, α-SMA, COL1, and COL3 in HSFs. In vivo, 50 and 100 μmol/L Sal-B significantly reduced scar size in gross and cross-sectional observations, with decreased α-SMA expression and collagen deposition in the tension-induced HTS model.

Conclusions

Our study demonstrated that Sal-B inhibits HSFs proliferation, migration, fibrotic marker expression and attenuates HTS formation in a tension-induced HTS model in vivo.

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Funding

This research was supported by the National Natural Science Foundation of China [grant numbers 81772103 and 82172234].

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Author notes

  1. Chio-Hou Chong and Jia-Ming Sun are co-first authors and contributed equally to this work.

Authors and Affiliations

  1. Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

    Chio-Hou Chong, Jia-Ming Sun, Yu-Xin Liu, Yi-Tung Tsai, Dan-Ning Zheng, Yi-Fan Zhang & Li Yu

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Correspondence to Dan-Ning Zheng, Yi-Fan Zhang or Li Yu.

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Chong, CH., Sun, JM., Liu, YX. et al. Salvianolic Acid B Attenuates Hypertrophic Scar Formation In Vivo and In Vitro. Aesth Plast Surg 47, 1587–1597 (2023). https://doi.org/10.1007/s00266-023-03279-1

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