Nogami Makoto, Hoshi Tomoaki, Arai Tomomi, Toukairin Yoko, Takama Michiho, Takahashi Ichiro
Department of Legal Medicine, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo 173-8605, Japan.
Leg Med (Tokyo). 2009 Sep;11(5):213-8. doi: 10.1016/j.legalmed.2009.05.001. Epub 2009 Jul 23.
In the wound healing process, angiogenesis is involved in the recovery of vasculature, and its process has been investigated. On the other hand, the reconstruction of lymphatic vessels in the injured subcutaneous tissue has not been studied in detail. We studied the recovery of lymphatic vessels using podoplanin immunohistochemistry in the paraffine section microscopy of the rat skin incision wound. Our result indicates a novel finding that subcutaneous tissue of the incised skin area does not show any recovery of lymphatic vessels up to 84 days after the skin incision. As the wound area shrunk, the surrounding subcutaneous tissue covered with the normal skin epithelial cells approached toward the center of the wound, and the lymphatic vessels in the surrounding tissue gradually reached the incision wound area. On the other hand, the regeneration of the vasculature occurred within the wound area as assessed by CD31 and von Willebrand Factor (vWF) immunohistochemistry. This difference was confirmed by the morphometric quantification of podoplanin- or vWF-positive vessels. Our results show that there is a clear difference in the recovery pattern of vascular and lymphatic vessels in the skin wound healing process.
在伤口愈合过程中,血管生成参与脉管系统的恢复,其过程已得到研究。另一方面,受损皮下组织中淋巴管的重建尚未得到详细研究。我们利用血小板内皮细胞黏附分子(Podoplanin)免疫组织化学方法,在大鼠皮肤切口伤口的石蜡切片显微镜观察中研究了淋巴管的恢复情况。我们的结果表明了一个新发现,即切开皮肤区域的皮下组织在皮肤切开后长达84天未显示出淋巴管的任何恢复。随着伤口面积缩小,被正常皮肤上皮细胞覆盖的周围皮下组织向伤口中心靠近,周围组织中的淋巴管逐渐到达切口伤口区域。另一方面,通过CD31和血管性血友病因子(vWF)免疫组织化学评估,伤口区域内发生了血管再生。血小板内皮细胞黏附分子或血管性血友病因子阳性血管的形态计量学量化证实了这种差异。我们的结果表明,在皮肤伤口愈合过程中,血管和淋巴管的恢复模式存在明显差异。