AIM:To investigate whether catalpol protects against diabetic retinal vascular endothelial injury by targeting the methyltransferase-like 3(METTL3)-m6A-thioredoxininteracting protein(TXNIP)axis and inhibiting nucle...AIM:To investigate whether catalpol protects against diabetic retinal vascular endothelial injury by targeting the methyltransferase-like 3(METTL3)-m6A-thioredoxininteracting protein(TXNIP)axis and inhibiting nucleotidebinding oligomerization domain(NOD)-like receptor family pyrin domain containing 3(NLRP3)inflammasome activation.METHODS:A streptozotocin-induced diabetic mouse model(n=20 per group)was used to assess retinal function via electroretinogram(ERG)and vascular integrity via Evans Blue leakage.Human retinal vascular endothelial cells(HRVECs)were exposed to high glucose(HG,30 mmol/L)with or without catalpol or the METTL3 inhibitor STM2457.NLRP3 inflammasome components(Western blot),oxidative stress(DCFH-DA probe),global m6A levels(Dot blot),and TXNIP expression were measured.The binding of catalpol to METTL3,NLRP3,TXNIP,and interleukin-1β(IL-1β)was analyzed via molecular docking and dynamics simulations.RESULTS:Catalpol treatment improved ERG amplitudes[a-wave,b-wave,oscillatory potentials(OPs)]and reduced vascular leakage in diabetic mice(P<0.05),while downregulating retinal vascular endothelial growth factor(VEGF),NLRP3,IL-1β,and IL-18 protein levels.In HGstimulated HRVECs,catalpol inhibited the NLRP3-apoptosisassociated speck-like protein containing a CARD(ASC)-caspase-1 inflammasome,reduced reactive oxygen species,and suppressed METTL3 expression and global m6A methylation(P<0.05).It also attenuated HG-induced TXNIP upregulation.METTL3 inhibition by STM2457 mimicked all protective effects of catalpol.Molecular simulations confirmed stable binding of catalpol to METTL3,NLRP3,TXNIP,and IL-1β.CONCLUSION:Catalpol alleviates diabetic retinal vascular endothelial injury by inhibiting the NLRP3 inflammasome.This effect is mediated,at least in part,through downregulating METTL3-dependent m6A RNA methylation of TXNIP.展开更多
·AIM: To describe the initial outcomes and safety of femtosecond laser-assisted deep anterior lamellar keratoplasty(DALK) for keratoconus and post-LASIK keratectasia.·METHODS: In this non-comparative case se...·AIM: To describe the initial outcomes and safety of femtosecond laser-assisted deep anterior lamellar keratoplasty(DALK) for keratoconus and post-LASIK keratectasia.·METHODS: In this non-comparative case series, 10 eyes of 9 patients underwent DALK procedures with a femtosecond laser(Carl Zeiss Meditec AG, Jena,Germany). Of the 9 patients, 7 had keratoconus and 2had post-LASIK keratectasia. A 500 kHz VisuMax femtosecond laser was used to perform corneal cuts on both donor and recipient corneas. The outcome measures were the uncorrected visual acuity(UCVA),best-corrected visual acuity(BCVA), corneal thickness,astigmatism, endothelial density count(EDC), and corneal power.·RESULTS: All eyes were successfully treated. Early postoperative evaluation showed a clear graft in all cases. Intraoperative complications included one case of a small Descemet’s membrane perforation.Postoperatively, there was one case of stromal rejection,one of loosened sutures, and one of wound dehiscence.A normal corneal pattern topography and transparency were restored, UCVA and BCVA improved significantly,and astigmatism improved slightly. There was no statistically significant decrease in EDC.· CONCLUSION: Our early results indicate that femtosecond laser-assisted deep anterior lamellar keratoplasty could improve UCVA and BCVA in patients with anterior corneal pathology. This approach shows promise as a safe and effective surgical choice in the treatment of keratoconus and post-LASIK keratectasia.展开更多
目的:分析睑板腺功能障碍型干眼(MGD)和水液缺乏型干眼(ADDE)患者的像差和散射相关参数,评估两种干眼类型患者的视觉质量。方法:将2018-01/10在我院门诊就诊的MGD患者25例(MGD组),ADDE患者25例(ADDE组),同时期就诊的健康人25例(对照组)...目的:分析睑板腺功能障碍型干眼(MGD)和水液缺乏型干眼(ADDE)患者的像差和散射相关参数,评估两种干眼类型患者的视觉质量。方法:将2018-01/10在我院门诊就诊的MGD患者25例(MGD组),ADDE患者25例(ADDE组),同时期就诊的健康人25例(对照组)纳入此次研究。三组受试对象填写眼表疾病指数量表(OSDI),接受泪液相关检查:泪液分泌试验(SⅠt)、泪膜破裂时间(TBUT)、角膜荧光染色(FL)。使用iTrace分析仪记录三组受试对象的高阶像差(HO)、球差(SA)、彗差(CA)和三叶草差(TA)的均方根值(RMS)。利用双通道视觉分析仪(OQASⅡ)记录三组受试对象自然状态下的散射值,包括调制传递函数截止频率(MTF cutoff)、斯特列尔比(SR)、客观散射指数(OSI),以及持续睁眼状态下OSI动态变化值(OSI均值)。结果:MGD组的OSDI评分明显高于ADDE组(38.2±5.6 vs 32.2±7.2分,P0.05;CA:t=1.80,P>0.05;TA:t=1.50,P>0.05;SA:t=1.97,P>0.05)。MGD和ADDE组之间的MTF cutoff、SR、OSI无差异(MTF cutoff:33.28±8.28 vs 37.12±9.53,SR:0.19±0.06 vs 0.22±0.08,OSI:1.30±0.32 vs 1.12±0.52,MTF cutoff:t=1.52,P>0.05;SR:t=1.50,P>0.05;OSI:t=1.47,P>0.05)。持续睁眼状态下MGD组的OSI均值明显高于ADDE组(2.386±0.118 vs 1.554±0.058,P<0.001)。结论:治疗干眼的同时需要关注改善患者的视觉质量,MGD患者的视觉质量影响比ADDE患者更加严重。泪膜动态状态下的OSI均值是评估干眼患者视觉质量的敏感指标。展开更多
基金Supported by the Hospital Management Research Projects of Jinling Hospital(No.2024JCYJQN113)Taikang Xianlin Gulou Hospital(No.TKKYZD20243501).
摘要AIM:To investigate whether catalpol protects against diabetic retinal vascular endothelial injury by targeting the methyltransferase-like 3(METTL3)-m6A-thioredoxininteracting protein(TXNIP)axis and inhibiting nucleotidebinding oligomerization domain(NOD)-like receptor family pyrin domain containing 3(NLRP3)inflammasome activation.METHODS:A streptozotocin-induced diabetic mouse model(n=20 per group)was used to assess retinal function via electroretinogram(ERG)and vascular integrity via Evans Blue leakage.Human retinal vascular endothelial cells(HRVECs)were exposed to high glucose(HG,30 mmol/L)with or without catalpol or the METTL3 inhibitor STM2457.NLRP3 inflammasome components(Western blot),oxidative stress(DCFH-DA probe),global m6A levels(Dot blot),and TXNIP expression were measured.The binding of catalpol to METTL3,NLRP3,TXNIP,and interleukin-1β(IL-1β)was analyzed via molecular docking and dynamics simulations.RESULTS:Catalpol treatment improved ERG amplitudes[a-wave,b-wave,oscillatory potentials(OPs)]and reduced vascular leakage in diabetic mice(P<0.05),while downregulating retinal vascular endothelial growth factor(VEGF),NLRP3,IL-1β,and IL-18 protein levels.In HGstimulated HRVECs,catalpol inhibited the NLRP3-apoptosisassociated speck-like protein containing a CARD(ASC)-caspase-1 inflammasome,reduced reactive oxygen species,and suppressed METTL3 expression and global m6A methylation(P<0.05).It also attenuated HG-induced TXNIP upregulation.METTL3 inhibition by STM2457 mimicked all protective effects of catalpol.Molecular simulations confirmed stable binding of catalpol to METTL3,NLRP3,TXNIP,and IL-1β.CONCLUSION:Catalpol alleviates diabetic retinal vascular endothelial injury by inhibiting the NLRP3 inflammasome.This effect is mediated,at least in part,through downregulating METTL3-dependent m6A RNA methylation of TXNIP.
基金National Natural Science Foundation of China (No. 81270979)Natural Science Foundation of Jiangsu Province, China (No.BK2012777)
摘要·AIM: To describe the initial outcomes and safety of femtosecond laser-assisted deep anterior lamellar keratoplasty(DALK) for keratoconus and post-LASIK keratectasia.·METHODS: In this non-comparative case series, 10 eyes of 9 patients underwent DALK procedures with a femtosecond laser(Carl Zeiss Meditec AG, Jena,Germany). Of the 9 patients, 7 had keratoconus and 2had post-LASIK keratectasia. A 500 kHz VisuMax femtosecond laser was used to perform corneal cuts on both donor and recipient corneas. The outcome measures were the uncorrected visual acuity(UCVA),best-corrected visual acuity(BCVA), corneal thickness,astigmatism, endothelial density count(EDC), and corneal power.·RESULTS: All eyes were successfully treated. Early postoperative evaluation showed a clear graft in all cases. Intraoperative complications included one case of a small Descemet’s membrane perforation.Postoperatively, there was one case of stromal rejection,one of loosened sutures, and one of wound dehiscence.A normal corneal pattern topography and transparency were restored, UCVA and BCVA improved significantly,and astigmatism improved slightly. There was no statistically significant decrease in EDC.· CONCLUSION: Our early results indicate that femtosecond laser-assisted deep anterior lamellar keratoplasty could improve UCVA and BCVA in patients with anterior corneal pathology. This approach shows promise as a safe and effective surgical choice in the treatment of keratoconus and post-LASIK keratectasia.
摘要目的:分析睑板腺功能障碍型干眼(MGD)和水液缺乏型干眼(ADDE)患者的像差和散射相关参数,评估两种干眼类型患者的视觉质量。方法:将2018-01/10在我院门诊就诊的MGD患者25例(MGD组),ADDE患者25例(ADDE组),同时期就诊的健康人25例(对照组)纳入此次研究。三组受试对象填写眼表疾病指数量表(OSDI),接受泪液相关检查:泪液分泌试验(SⅠt)、泪膜破裂时间(TBUT)、角膜荧光染色(FL)。使用iTrace分析仪记录三组受试对象的高阶像差(HO)、球差(SA)、彗差(CA)和三叶草差(TA)的均方根值(RMS)。利用双通道视觉分析仪(OQASⅡ)记录三组受试对象自然状态下的散射值,包括调制传递函数截止频率(MTF cutoff)、斯特列尔比(SR)、客观散射指数(OSI),以及持续睁眼状态下OSI动态变化值(OSI均值)。结果:MGD组的OSDI评分明显高于ADDE组(38.2±5.6 vs 32.2±7.2分,P0.05;CA:t=1.80,P>0.05;TA:t=1.50,P>0.05;SA:t=1.97,P>0.05)。MGD和ADDE组之间的MTF cutoff、SR、OSI无差异(MTF cutoff:33.28±8.28 vs 37.12±9.53,SR:0.19±0.06 vs 0.22±0.08,OSI:1.30±0.32 vs 1.12±0.52,MTF cutoff:t=1.52,P>0.05;SR:t=1.50,P>0.05;OSI:t=1.47,P>0.05)。持续睁眼状态下MGD组的OSI均值明显高于ADDE组(2.386±0.118 vs 1.554±0.058,P<0.001)。结论:治疗干眼的同时需要关注改善患者的视觉质量,MGD患者的视觉质量影响比ADDE患者更加严重。泪膜动态状态下的OSI均值是评估干眼患者视觉质量的敏感指标。