Collagen XVIII and corneal reinnervation following keratectomy.

Collagen XVIII and corneal reinnervation following keratectomy.
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XVIII 胶原蛋白和角膜切除术后的角膜神经支配。

DOI:
10.1016/j.febslet.2008.09.052
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发表时间:
2008-10-29
期刊:
影响因子:
3.5
通讯作者:
Chang, Jin-Hong
Chang, Jin-Hong
中科院分区:
生物学3区
文献类型:
--
作者:
Sakimoto, Tohru;Kim, Tae-im;Ellenberg, David;Fukai, Naomi;Jain, Sandeep;Azar, Dimitri T.;Chang, Jin-Hong

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胶原XVIII在角膜神经再支配调节中的重要性在很大程度上仍然未知。我们使用整体安装免疫共聚焦显微镜定位胶原蛋白XVIII的野生型(WT)小鼠角膜的神经基底膜。透射电子显微镜显示胶原XVIII基因敲除小鼠(col 18 a1 −/−)的角膜神经解体。抗体2 H3特异性神经丝在WT小鼠角膜中与胶原XVIII和IV以及层粘连蛋白-2共定位,但在col 18 a1 −/−小鼠角膜中不与胶原IV和层粘连蛋白-2共定位。角膜切除术后,与WT小鼠相比,col 18 a1 −/−小鼠的角膜神经突延伸减少。我们的数据表明,胶原XVIII可能在角膜损伤后的神经再支配中发挥重要作用。
The significance of collagen XVIII in the regulation of corneal reinnervation remains largely unknown. We used whole mount immunoconfocal microscopy to localize collagen XVIII to the nerve basement membrane of wild-type (WT) mouse corneas. Transmission electron microscopy showed corneal nerve disorganization in collagen XVIII knockout mice (col18a1−/−). Antibody 2H3-specific neurofilament colocalized with collagens XVIII and IV and laminin-2 in WT mouse corneas, but did not colocalize with collagen IV and laminin-2 in col18a1−/− mouse corneas. Following keratectomy, col18a1−/− mice displayed decreased corneal neurite extension compared to WT mice. Our data indicate that collagen XVIII may play an important role in corneal reinnervation after wounding.
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