Purpose:To observe the differences of damage patterns of retinal nerve fiber layer(RNFL) between acute and chronic intraocular pressure(IOP) elevation in primary angle closure glaucoma.(PACG).using optical coherence t...Purpose:To observe the differences of damage patterns of retinal nerve fiber layer(RNFL) between acute and chronic intraocular pressure(IOP) elevation in primary angle closure glaucoma.(PACG).using optical coherence tomography(OCT).Methods:Twenty four patients(48 eyes) with unilateral acute PACG(APACG) attack in the 6 months after remission and 36 patients(64 eyes) with chronic PACG(CPACG) were included in this prospective study.For all cases,IOP has been controlled less than 21 mmHg after treatment.Using stratus OCT,the RNFL thickness was assessed in eyes with PACG within 3 days,2 weeks,1,3 and 6 months after IOP controlled.Repeated measures ANOVA was used to examine the time course of changes after IOP controlled in RNFL thickness in both acute attack and unaffected fellow eyes of APACG and eyes with CPACG.Results:The mean RNFL thickness(μm) for the APACG-attacked eyes increased significantly within 3 days.(121.49±23.84).after acute strike and then became thinner along with time.(107.22±24.72 at 2 week,93.58±18.37 at 1 month,84.10±19.89 at 3 months and 78.98±19.17 at 6 months).In APACG-attacked eyes,there were significant differences of average RNFL thickness among 5 different times after IOP was controlled(P<0.001).In the APACG unaffected fellow eyes and CPACG eyes,there were no significant differences in mean RNFL thickness among 5 different times(F=0.450,P=0.104 in APACG unaffected fellow eyes and F=1.558,P=0.200 in CPACG eyes).There was significant difference for interaction between time periods and groups(F=1.912,P= 0.003).Conclusion:RNFL damage patterns are different under different IOP elevated courses.In APACG,RNFL was found to be swollen and thickening right after acute attack and then becomes thinning and atrophy along with the time,while RNFL was found to be diffused thinness in CPACG.展开更多
目的：探讨脑震荡(BC)鼠多巴胺能神经元和神经纤维内酪氨酸羟化酶(TH)含量的变化。方法：用金属单摆打击装置复制 BC 模型。动物随机分为对照组和伤后1～24 d 损伤组；用免疫组织化学结合图像分析方法研究 BC 后中脑黑质致密区(SNC)和...目的：探讨脑震荡(BC)鼠多巴胺能神经元和神经纤维内酪氨酸羟化酶(TH)含量的变化。方法：用金属单摆打击装置复制 BC 模型。动物随机分为对照组和伤后1～24 d 损伤组；用免疫组织化学结合图像分析方法研究 BC 后中脑黑质致密区(SNC)和腹侧被盖区(VTA)多巴胺能神经元及基底节尾壳核多巴胺能神经纤维 TH 含量的变化。结果：在 SNC 和 VTA 及基底节,BC 后1、4、8及16 d 组的 TH 免疫反应阳性明显高于对照组,其中以4d 组反应最强,24 d 组在 SNC 和基底节与对照组比较无显著性差异,但在 VTA,TH 免疫反应阳性仍高于对照组。结论：BC 后 TH 早期增高可能是脑损伤神经元过度兴奋的反应,随后持续增高一段时间可能是多巴胺能神经元上调其合成能力的一种代偿反应。展开更多
基金supported by the Science and Technology Planning Project of Guangdong Province(2008B030301334)the Special Fund for Ophthalmologic State Key Laboratory
文摘Purpose:To observe the differences of damage patterns of retinal nerve fiber layer(RNFL) between acute and chronic intraocular pressure(IOP) elevation in primary angle closure glaucoma.(PACG).using optical coherence tomography(OCT).Methods:Twenty four patients(48 eyes) with unilateral acute PACG(APACG) attack in the 6 months after remission and 36 patients(64 eyes) with chronic PACG(CPACG) were included in this prospective study.For all cases,IOP has been controlled less than 21 mmHg after treatment.Using stratus OCT,the RNFL thickness was assessed in eyes with PACG within 3 days,2 weeks,1,3 and 6 months after IOP controlled.Repeated measures ANOVA was used to examine the time course of changes after IOP controlled in RNFL thickness in both acute attack and unaffected fellow eyes of APACG and eyes with CPACG.Results:The mean RNFL thickness(μm) for the APACG-attacked eyes increased significantly within 3 days.(121.49±23.84).after acute strike and then became thinner along with time.(107.22±24.72 at 2 week,93.58±18.37 at 1 month,84.10±19.89 at 3 months and 78.98±19.17 at 6 months).In APACG-attacked eyes,there were significant differences of average RNFL thickness among 5 different times after IOP was controlled(P<0.001).In the APACG unaffected fellow eyes and CPACG eyes,there were no significant differences in mean RNFL thickness among 5 different times(F=0.450,P=0.104 in APACG unaffected fellow eyes and F=1.558,P=0.200 in CPACG eyes).There was significant difference for interaction between time periods and groups(F=1.912,P= 0.003).Conclusion:RNFL damage patterns are different under different IOP elevated courses.In APACG,RNFL was found to be swollen and thickening right after acute attack and then becomes thinning and atrophy along with the time,while RNFL was found to be diffused thinness in CPACG.
