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Aesthetic Plastic Surgery

Published in:

01-10-2011 | Original Article

Botulinum Toxin Type A Inhibits Connective Tissue Growth Factor Expression in Fibroblasts Derived From Hypertrophic Scar

Authors: Zhibo Xiao, Miaobo Zhang, Ying Liu, Lihong Ren

Published in: Aesthetic Plastic Surgery | Issue 5/2011

Abstract

Background

Botulinum toxin type A (BTXA) can inhibit the growth of hypertrophic scars, but the molecular mechanism for this action is unknown. In addition to reducing the tension around the wound by stimulating temporary denervation, a growing body of evidence suggests that BTXA is involved in regulating the cell cycle and decreasing transforming growth factor-β1 (TGF-β1) expression in the fibroblasts of hypertrophic scars. Connective tissue growth factor (CTGF) is a downstream regulator of TGF-β1 function and an independent mediator of scarring and fibrosis. The effects of BTXA on CTGF in hypertrophic scar still are unknown. This study aimed to explore the effect of BTXA on CTGF in fibroblasts derived from hypertrophic scar and to elucidate its actual mechanism further.

Methods

Fibroblasts isolated from tissue specimens of hypertrophic scar were treated with BTXA. The difference in proliferation between treated and nontreated fibroblasts was analyzed by flow cytometry. Proteins of CTGF were checked using Western blot in fibroblasts with and without BTXA.

Results

The proliferation of the fibroblasts treated with BTXA was slower than that of the fibroblasts that had no BTXA treatment (p < 0.01), which showed that BTXA effectively inhibited the growth of fibroblasts. Compared with fibroblasts that received no BTXA treatment, BTXA at 1 U/10⁶ cells decreased the expression of CTGF by 49.2% ± 12.5% (p < 0.01), and BTXA at 2.5 U/10⁶ cells decreased the expression of CTGF by 56.9% (p < 0.01).

Conclusion

These results suggest that BTXA effectively inhibited the growth of fibroblasts derived from hypertrophic scar and in turn caused a decrease in CTGF protein, providing theoretical support for the application of BTXA to control hypertrophic scarring.

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Title: Botulinum Toxin Type A Inhibits Connective Tissue Growth Factor Expression in Fibroblasts Derived From Hypertrophic Scar
Authors: Zhibo Xiao
Miaobo Zhang
Ying Liu
Lihong Ren
Publication date: 01-10-2011
Publisher: Springer-Verlag
Published in: Aesthetic Plastic Surgery / Issue 5/2011
Print ISSN: 0364-216X
Electronic ISSN: 1432-5241
DOI: https://doi.org/10.1007/s00266-011-9690-3

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Botulinum Toxin Type A Inhibits Connective Tissue Growth Factor Expression in Fibroblasts Derived From Hypertrophic Scar

Abstract

Background

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusion

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