组织工程与重建外科杂志 ›› 2023, Vol. 19 ›› Issue (1): 28-.

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非剥脱点阵激光联合积雪苷对兔耳增生性瘢痕的作用研究#br#

  

  • 出版日期:2023-02-01 发布日期:2023-03-08

 Effect of non-ablative fractional laser combined with asiaticoside ointmenton hypertrophic scar of rabbit ear

  • Online:2023-02-01 Published:2023-03-08

摘要: 目的 研究非剥脱点阵激光联合积雪苷软膏对兔耳增生性瘢痕的作用及机制。方法 建立兔耳增生性瘢痕模型,分为对照组(不建模)、模型组(不干预)、联合组(1 565 nm 非剥脱点阵激光联合积雪苷治疗)、点阵组(1 565 nm非剥脱点阵激光治疗)和积雪苷组(仅以积雪苷治疗)。分组干预后行大体观察、HE 染色、MASSON 染色,TUNEL法检测成纤维细胞凋亡,Real-time PCR、Western blot 检测Ⅰ型胶原、Ⅲ型胶原、TGF-β1、Smads、IL-6 等相关因子的表达。结果 经造模分组干预后,大体观察、HE 染色和 MASSON 染色可见联合组瘢痕增生减少 ;TUNEL 法检测细胞凋亡显示,联合组凋亡细胞明显增加 ;Real-time PCR 及 Western blot 结果显示,联合组Ⅰ型胶原、Ⅲ型胶原、TGF-β1、IL-6、Smad 2 表达升高,Smad 7 表达降低。结论 1 565 nm 非剥脱点阵激光联合积雪苷治疗增生性瘢痕疗效显著,明显优于单独使用激光或积雪苷治疗,其作用机制与 TGF-β1、IL-6、Smad 2 表达升高,Smad 7 表达降
低有关。

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Abstract:

Objective To explore the effect and mechanism of non-ablative fractional laser combined with asiaticoside
ointment on hypertrophic scar (HS) in rabbit ear. Methods Rabbit ear HS model was established and divided into control group
(no modeling), model group (no intervention), combination group (1 565 nm non-ablative fractional laser combined with snow
side treatment), fractional group (1 565 nm non-ablative fractional laser treatment) and asiaticoside group (asiaticoside treatment)
according to different intervention methods. Gross observation, HE staining and MASSON staining were conducted to assess HS
improvement, fibroblast apoptosis was detected by TUNEL method. The expressions of type Ⅰ
and type Ⅲ collagen, TGF-β1,
Smads, IL-6 were detected by real-time PCR and Western blot. Results After the intervention of the modeling group, gross
observation, HE staining and MASSON staining showed that scar hyperplasia was reduced in the combination group. TUNEL
showed that apoptotic cells were significantly increased in the combination group. Real-time and Western blot results showed the
mRNA and protein levels of type Ⅰ
collagen and type Ⅲ collagen, TGF-β1, IL-6 and Smad 2 in combination group increased,
while the expression of Smad 7 decreased. Conclusion 1 565 nm non-ablative fractional laser combined with asiaticoside
has significant effect in the treatment of HS, and is significantly better than that of laser or asiaticoside alone. Its mechanism is
related to the increased expression of TGF- β1, IL-6 and Smad 2, and the decreased expression of Smad 7.

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