基質金屬蛋白酶-8對角膜基質膠原的作用研究
[Abstract]:Objective to investigate the effect of matrix metalloproteinase-8 (MMP-8) on cornea. Methods Fifteen healthy C57BL/6J mice were injected with 10 渭 L MMP-8 into the corneal stroma of the right eye as the experimental group, and the left eye was treated with the same amount of normal saline as the control group. Using two-photon microscope second harmonic imaging technique, the images were reconstructed by the software Imaris in vivo for 8 h. The image signal intensity was calculated for 8 h. The corneal turbidity was evaluated under slit lamp for 8 h. The levels of hydroxyproline in the cornea were measured. Results the signal intensities of corneal stromal fibers in the experimental group and the control group were 89.7 鹵11.2U 85.3 鹵7.0h and 14.5 鹵3.4g 46.6 鹵14.0h, respectively, which were 11.0 鹵4.6 鹵12.5h and 8h, respectively. The signal intensity of corneal stroma in the experimental group was significantly lower than that in the control group (P0.05) for 4h and 8h. The corneal signal intensity in the experimental group was significantly lower than that in the control group (P0.05) and the corneal signal intensity in the experimental group was significantly higher than that in the control group. The corneal hydroxyproline levels in the experimental group and the control group were (0.433 鹵0.090), (鹵0.590 鹵0.133) 渭 g / mg, respectively, which were significantly lower than those in the control group (P 0.05). Conclusion MMP-8 can degrade and destroy the collagen of corneal stroma and decrease the transparency of cornea.
【作者單位】: 鄭州大學人民醫(yī)院眼科/河南省眼科研究所/河南省立眼科醫(yī)院;錦州醫(yī)科大學眼科學;新鄉(xiāng)醫(yī)學院;
【基金】:河南省自然科學基金資助項目(162300410163) 河南省創(chuàng)新人才計劃項目(144100510015) 河南省國際合作項目(152102410085)
【分類號】:R772.21
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