Internal lenticonus is a very rare morphologic abnormality of crystalline lens which has been reported in only several cases in the literature. We herein reported the clinical characteristics and surgical findings of ...Internal lenticonus is a very rare morphologic abnormality of crystalline lens which has been reported in only several cases in the literature. We herein reported the clinical characteristics and surgical findings of the anterior internal lenticonus accompanied by congenital nuclear cataract. Cataract extraction accompanied with intraocular lens implantation was uneventfully performed, and a good visual outcome was achieved in this case. Viral infection during embryonal and fetal period might account for the formation of the anterior internal lenticonus and congenital nuclearcataract in our case.展开更多
Summary： By using RT PCR and immunohistochemistry, the expressions of transforming growth factor 132 （TGF-β2） mRNA, proliferating cell nuclear antigen （PCNA） and fibronection （FN） protein in lens epithelial ce...Summary： By using RT PCR and immunohistochemistry, the expressions of transforming growth factor 132 （TGF-β2） mRNA, proliferating cell nuclear antigen （PCNA） and fibronection （FN） protein in lens epithelial cells （LECs） of age-related nuclear and cortex cataract were detected and compared. The results of RT-PCR revealed that the expression of TGF-β2 mRNA was higher in cortex cataract than in nuclear cataract. Immunohistochemistry demonstrated that the expression of PCNA protein was lower and the expression of FN protein was higher in cortex cataract than in nuclear cataract. It was suggested that TGF-β2 , PCNA and FN might take important parts in the process of age-related cataract. Cortex cataract was related to the transdifferentiation of LECs, and nuclear cataract to the proliferation of LECs.展开更多
To detect the pathogenesis of age-related cataract, we analyzed the expression of TGF-β2 mRNA, proliferation cell nuclear antigen （PCNA）, Bcl-2/Bax, fibronection （FN）, vimentin protein and the density of lens epi...To detect the pathogenesis of age-related cataract, we analyzed the expression of TGF-β2 mRNA, proliferation cell nuclear antigen （PCNA）, Bcl-2/Bax, fibronection （FN）, vimentin protein and the density of lens epithelial cells（LECs） of nuclear cataract, cortex cataract and normal LECs. Results showed that the expression level of TGF-β2 mRNA, FN and vimentin protein was higher in LECs of cortex cataract than that of nuclear cataract and normal lens. But the level of Bcl-2/Bax and PCNA was on the contrary. The density of LECs was （4250.63±275.05）/mm^2 in cortex cataract. It was （5438. 40±262.30）/mm^2 in nuclear cataract, and （5368.63 ±211.07）/mm^2 in normal LECs resepectively. There was significant difference between cortex and nuclear cataract （p〈0.05）. These suggested that TGF-β2 might take an important part in the process of age-related cataract. Age-related nuclear cataract was related to the proliferation LECs. While cortex cataract was related to the apoptosis and transdifferentiation of LECs.展开更多
AIM： To assess the level of glutathione, thioltransferase, and argpyrimidine in nuclear and cortical cataractous lenses as well as in the clear lenses in the north Indian population.METHODS： Human cataractous lenses...AIM： To assess the level of glutathione, thioltransferase, and argpyrimidine in nuclear and cortical cataractous lenses as well as in the clear lenses in the north Indian population.METHODS： Human cataractous lenses were collected from the patients who underwent extracapsular cataract extraction surgery; clear lenses were collected from the freshly donated eye bank eyes. Antioxidant molecules such as glutathione and thioltransferase enzyme activity were measured; simultaneously in these lenses a blue fluorophore argpyrimidine, an advanced glycation end（AGE） product level was assessed using high performance liquid chromatography（HPLC）.RESULTS： The protein concentration was found to be present at higher levels in the control lenses compared to cataract lenses. A significant decrease in the glutathione level was observed in the nuclear cataractous lenses compared to cortical cataractous（P=0.004） and clear lenses（P≤0.005）, but no significant change in the level of antioxidant enzyme thioltransferase was observed. Further, argpyrimidine a blue fluorophore（AGE） was found to be significantly higher in the nuclear cataract（P=0.013） compared to cortical cataract lenses.CONCLUSION： Antioxidants such as glutathione significantly decrease in age-related nuclear and cortical cataract and an AGE, argpyrimidine are present at significantly higher levels in nuclear cataract.展开更多
目的:比较不同术式联合Toric IOL植入术治疗硬核年龄相关性白内障的疗效。方法:回顾性研究。选取2020-01/2021-12我院确诊为硬核年龄相关性白内障患者104例104眼,按照不同手术方式分为超声乳化组52眼采用超声乳化术联合Toric IOL植入术...目的:比较不同术式联合Toric IOL植入术治疗硬核年龄相关性白内障的疗效。方法:回顾性研究。选取2020-01/2021-12我院确诊为硬核年龄相关性白内障患者104例104眼,按照不同手术方式分为超声乳化组52眼采用超声乳化术联合Toric IOL植入术,小切口组52眼采用小切口水平空间劈核术联合Toric IOL植入术。比较两组患者手术前后最佳矫正远视力(BCDVA)、角膜散光、角膜内皮细胞数量和正常六边形细胞比例、泪膜功能及并发症情况。结果:术前和术后3mo两组患者BCDVA(LogMAR)比较均无差异(均P>0.05);术后1wk,小切口组患者BCDVA(LogMAR)优于超声乳化组(0.15±0.04 vs 0.20±0.05,P<0.001)。两组患者各组内术后1wk,3mo角膜散光均低于术前,术后3mo低于术后1wk(均P<0.05),而两组间手术前后角膜散光比较均无差异(均P>0.05)。术后1wk、3mo,小切口组患者角膜内皮细胞数量高于超声乳化组(术后1wk:2363.8±315.3 vs 2231.4±326.4cells/mm2,P<0.05;术后3mo:2414.6±245.7 vs 2322.9±221.0cells/mm2,P<0.05)。术前、术后1wk两组角膜正常六边形细胞比例比较均无差异(均P>0.05);术后3mo,小切口组正常六边形细胞比例高于超声乳化组(21.77%±1.91%vs 20.59%±1.65%,P<0.001)。术前、术后3mo时两组BUT和OSDI评分的比较无差异(P>0.05);术后1wk小切口组患者BUT长于超声乳化组(6.8±0.8 vs 5.9±1.0s,P<0.001),OSDI评分低于超声乳化组(17.62±5.47 vs 20.34±6.18分,P<0.05)。小切口组术后并发症发生率低于超声乳化组(3.9%vs 17.3%,P<0.05)。结论:小切口水平空间劈核术联合Toric IOL植入术可明显改善硬核年龄相关性白内障患者视力及散光,对角膜内皮和泪膜功能损伤轻微。展开更多
文摘Internal lenticonus is a very rare morphologic abnormality of crystalline lens which has been reported in only several cases in the literature. We herein reported the clinical characteristics and surgical findings of the anterior internal lenticonus accompanied by congenital nuclear cataract. Cataract extraction accompanied with intraocular lens implantation was uneventfully performed, and a good visual outcome was achieved in this case. Viral infection during embryonal and fetal period might account for the formation of the anterior internal lenticonus and congenital nuclearcataract in our case.
文摘Summary： By using RT PCR and immunohistochemistry, the expressions of transforming growth factor 132 （TGF-β2） mRNA, proliferating cell nuclear antigen （PCNA） and fibronection （FN） protein in lens epithelial cells （LECs） of age-related nuclear and cortex cataract were detected and compared. The results of RT-PCR revealed that the expression of TGF-β2 mRNA was higher in cortex cataract than in nuclear cataract. Immunohistochemistry demonstrated that the expression of PCNA protein was lower and the expression of FN protein was higher in cortex cataract than in nuclear cataract. It was suggested that TGF-β2 , PCNA and FN might take important parts in the process of age-related cataract. Cortex cataract was related to the transdifferentiation of LECs, and nuclear cataract to the proliferation of LECs.
基金Supported bythe Natural Science Foundation of Hubei Province(2000-J059)
文摘To detect the pathogenesis of age-related cataract, we analyzed the expression of TGF-β2 mRNA, proliferation cell nuclear antigen （PCNA）, Bcl-2/Bax, fibronection （FN）, vimentin protein and the density of lens epithelial cells（LECs） of nuclear cataract, cortex cataract and normal LECs. Results showed that the expression level of TGF-β2 mRNA, FN and vimentin protein was higher in LECs of cortex cataract than that of nuclear cataract and normal lens. But the level of Bcl-2/Bax and PCNA was on the contrary. The density of LECs was （4250.63±275.05）/mm^2 in cortex cataract. It was （5438. 40±262.30）/mm^2 in nuclear cataract, and （5368.63 ±211.07）/mm^2 in normal LECs resepectively. There was significant difference between cortex and nuclear cataract （p〈0.05）. These suggested that TGF-β2 might take an important part in the process of age-related cataract. Age-related nuclear cataract was related to the proliferation LECs. While cortex cataract was related to the apoptosis and transdifferentiation of LECs.
文摘AIM： To assess the level of glutathione, thioltransferase, and argpyrimidine in nuclear and cortical cataractous lenses as well as in the clear lenses in the north Indian population.METHODS： Human cataractous lenses were collected from the patients who underwent extracapsular cataract extraction surgery; clear lenses were collected from the freshly donated eye bank eyes. Antioxidant molecules such as glutathione and thioltransferase enzyme activity were measured; simultaneously in these lenses a blue fluorophore argpyrimidine, an advanced glycation end（AGE） product level was assessed using high performance liquid chromatography（HPLC）.RESULTS： The protein concentration was found to be present at higher levels in the control lenses compared to cataract lenses. A significant decrease in the glutathione level was observed in the nuclear cataractous lenses compared to cortical cataractous（P=0.004） and clear lenses（P≤0.005）, but no significant change in the level of antioxidant enzyme thioltransferase was observed. Further, argpyrimidine a blue fluorophore（AGE） was found to be significantly higher in the nuclear cataract（P=0.013） compared to cortical cataract lenses.CONCLUSION： Antioxidants such as glutathione significantly decrease in age-related nuclear and cortical cataract and an AGE, argpyrimidine are present at significantly higher levels in nuclear cataract.
文摘目的:比较不同术式联合Toric IOL植入术治疗硬核年龄相关性白内障的疗效。方法:回顾性研究。选取2020-01/2021-12我院确诊为硬核年龄相关性白内障患者104例104眼,按照不同手术方式分为超声乳化组52眼采用超声乳化术联合Toric IOL植入术,小切口组52眼采用小切口水平空间劈核术联合Toric IOL植入术。比较两组患者手术前后最佳矫正远视力(BCDVA)、角膜散光、角膜内皮细胞数量和正常六边形细胞比例、泪膜功能及并发症情况。结果:术前和术后3mo两组患者BCDVA(LogMAR)比较均无差异(均P>0.05);术后1wk,小切口组患者BCDVA(LogMAR)优于超声乳化组(0.15±0.04 vs 0.20±0.05,P<0.001)。两组患者各组内术后1wk,3mo角膜散光均低于术前,术后3mo低于术后1wk(均P<0.05),而两组间手术前后角膜散光比较均无差异(均P>0.05)。术后1wk、3mo,小切口组患者角膜内皮细胞数量高于超声乳化组(术后1wk:2363.8±315.3 vs 2231.4±326.4cells/mm2,P<0.05;术后3mo:2414.6±245.7 vs 2322.9±221.0cells/mm2,P<0.05)。术前、术后1wk两组角膜正常六边形细胞比例比较均无差异(均P>0.05);术后3mo,小切口组正常六边形细胞比例高于超声乳化组(21.77%±1.91%vs 20.59%±1.65%,P<0.001)。术前、术后3mo时两组BUT和OSDI评分的比较无差异(P>0.05);术后1wk小切口组患者BUT长于超声乳化组(6.8±0.8 vs 5.9±1.0s,P<0.001),OSDI评分低于超声乳化组(17.62±5.47 vs 20.34±6.18分,P<0.05)。小切口组术后并发症发生率低于超声乳化组(3.9%vs 17.3%,P<0.05)。结论:小切口水平空间劈核术联合Toric IOL植入术可明显改善硬核年龄相关性白内障患者视力及散光,对角膜内皮和泪膜功能损伤轻微。
