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Cell Death Dis:FGF21可增加移植皮瓣的存活预后

2019-11-25 QQY MedSci原创

随机皮瓣,由于其易得且无轴向血管限制的特点而常被用于外科手术——组织重建。而缺血性坏死则是一种常见的并发症,尤其容易出现在皮瓣的远端。既往研究表明,FGF21可以促进血管生成并可预防缺血性心血管疾病,但FGF21对皮瓣存活的影响尚不明确。在本研究中,研究人员使用大鼠随机皮瓣模型,发现FGF21在成功存活的皮瓣中的表达量显著增加,提示FGF21可能对皮瓣的存活起关键作用。随后研究人员通过实验进一步来

随机皮瓣,由于其易得且无轴向血管限制的特点而常被用于外科手术——组织重建。而缺血性坏死则是一种常见的并发症,尤其容易出现在皮瓣的远端。既往研究表明,FGF21可以促进血管生成并可预防缺血性心血管疾病,但FGF21对皮瓣存活的影响尚不明确。

在本研究中,研究人员使用大鼠随机皮瓣模型,发现FGF21在成功存活的皮瓣中的表达量显著增加,提示FGF21可能对皮瓣的存活起关键作用。随后研究人员通过实验进一步来阐明FGF21在该模型中的作用,发现FGF21是通过增强血管生成、抑制细胞凋亡和减少氧化应激反应从而直接增加皮瓣的存活面积、血流强度和平均血管密度。

此外,研究人员还发现予以FGF21能够增强自噬,而FGF21所起的有益作用能够被自噬抑制剂3-甲基腺嘌呤(3MA)所逆转,提示在皮瓣存活过程中,自噬在FGF21对皮瓣存活的治疗性益处中起着核心作用。更深入的机制研究表明FGF21诱导自噬增强是由TFEB的去磷酸化和核易位所介导的;而这种作用是通过AMPK-FoxO3a-SPK2-CARM1和AMPK-mTOR两种信号通路的激活所完成的。

综上所述,该文章表明FGF21是细胞自噬的有效调节剂,能够显著提高随机皮瓣的生存能力,因此也为临床应用提供一个新的希望。

原始出处:

Zhou et al. FGF21 augments autophagy in random-pattern skin flaps via AMPK signaling pathways and improves tissue survival.Cell Death and Disease ( 2019) 10:872. https://doi.org/10.1038/s41419-019-2105-0

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    2020-01-26 维他命
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    2019-11-27 sunylz
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    2019-11-27 zhty5339
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