目的观察大鼠角膜碱烧伤使用羊膜匀浆提取液(extraction of amniotic membrane,EAM)后角膜瘢痕的变化,探讨羊膜匀浆提取液应用于角膜碱烧伤的临床价值及作氉用机理。方法取SD大鼠40只随机分为EAM组(20只)和对照组(20只),所有大鼠通过1 m...目的观察大鼠角膜碱烧伤使用羊膜匀浆提取液(extraction of amniotic membrane,EAM)后角膜瘢痕的变化,探讨羊膜匀浆提取液应用于角膜碱烧伤的临床价值及作氉用机理。方法取SD大鼠40只随机分为EAM组(20只)和对照组(20只),所有大鼠通过1 mol·L-1的NaOH溶液建立右眼角膜碱烧伤模型。EAM组行EAM滴眼,每天4次,对照组用PBS缓冲液滴眼。通过裂隙灯显微镜下观察大鼠角膜透明性,角膜共聚焦显微镜动态观察大鼠角膜超微结构的变化,计算肌成纤维细胞的数量。结果碱烧伤后28 d,EAM组的角膜透明度评分明显好于对照组,两组分别为2.36±0.81和3.36±1.12(P<0.01)。碱烧伤后第9天、第11天、第14天EAM组肌成纤维细胞密度均小于对照组,各时间点EAM组、对照组分别为(201±39)个·mm-2、(291±48)个·mm-2,(248±84)个·mm-2、(349±105)个·mm-2,(108±57)个·mm-2、(175±62)个·mm-2,两组之间差异均有统计学意义(均为P<0.01)。结论新鲜EAM可以有效抑制碱烧伤后肌成纤维细胞的激活和增殖,减少角膜瘢痕的形成。展开更多
To evaluate the efficacy and safety of resection and cryotherapy combined with amniotic membrane transplantation （AMT） for the treatment of vernal keratoconjunctivitis （VKC） with giant papillae （GP）. Eight patie...To evaluate the efficacy and safety of resection and cryotherapy combined with amniotic membrane transplantation （AMT） for the treatment of vernal keratoconjunctivitis （VKC） with giant papillae （GP）. Eight patients （16 eyes involved） with VKC, characterized by GP on the upper tarsal conjunctiva, underwent resection and cryotherapy in combination with AMT. The follow-up lasted for 3-22 months. The results showed that corneal shield ulcers and superficial punctuate keratitis healed during the first week after surgery and did not recur. Fourteen eyes （87.5 %） were symptom-free l month after surgery, and no GE ectropion, trichiasis and other complications were noted, but the blood vessels of upper tarsal conjunctiva could not be clearly seen and a little conjunctival scar was observed. Recurrence of GP was observed in 2 eyes （12.5 %）, with the area being less and irritation milder as compared with those before the operation. Among the two eyes, one eye was treated by cyclosporine eyedrops with improvement, but the other eye showed no improvement after the treatment, and underwent a second surgery with a cotton patch soaked in fluorouracil applied onto the supratarsal area after resection and cryotherapy. Four months after the treatment the patient presented no symptoms and GP did not recur. It is concluded that the resection and cryotherapy combined with AMT is an effective and safe treatment for VKC with GP.展开更多
文摘To evaluate the efficacy and safety of resection and cryotherapy combined with amniotic membrane transplantation （AMT） for the treatment of vernal keratoconjunctivitis （VKC） with giant papillae （GP）. Eight patients （16 eyes involved） with VKC, characterized by GP on the upper tarsal conjunctiva, underwent resection and cryotherapy in combination with AMT. The follow-up lasted for 3-22 months. The results showed that corneal shield ulcers and superficial punctuate keratitis healed during the first week after surgery and did not recur. Fourteen eyes （87.5 %） were symptom-free l month after surgery, and no GE ectropion, trichiasis and other complications were noted, but the blood vessels of upper tarsal conjunctiva could not be clearly seen and a little conjunctival scar was observed. Recurrence of GP was observed in 2 eyes （12.5 %）, with the area being less and irritation milder as compared with those before the operation. Among the two eyes, one eye was treated by cyclosporine eyedrops with improvement, but the other eye showed no improvement after the treatment, and underwent a second surgery with a cotton patch soaked in fluorouracil applied onto the supratarsal area after resection and cryotherapy. Four months after the treatment the patient presented no symptoms and GP did not recur. It is concluded that the resection and cryotherapy combined with AMT is an effective and safe treatment for VKC with GP.
