circRNA CPT1A调控PTEN在糖尿病视网膜病变患者神经组织病变中的作用  

Mechanism of circular ribonucleic acid carnitine palmitoyltrans-ferase 1A involved in neuropathy in diabetic retinopathy patients by regulating phosphatase and tensin homolog

作　　者：尹丹 韩莎莎 刘颖 李跃峰 李勇 YIN Dan;HAN Shasha;LIU Ying;LI Yuefeng;LI Yong(Department of Ophthalmology,Hengshui People’s Hospital,Hengshui 053000,Hebei Province,China)

机构地区：[1]衡水市人民医院眼科,河北省衡水市053000

出　　处：《眼科新进展》2024年第3期212-216,共5页Recent Advances in Ophthalmology

基　　金：衡水市科技局项目(编号:2021014087Z)。

摘　　要：目的 研究circRNA肉碱棕榈酰转移酶1A(CPT1A)在糖尿病视网膜病变(DR)患者中的表达情况,并探讨其对神经组织病变的作用。方法 选取我院2019年1月至2022年1月收治的2型糖尿病患者80例(102眼),其中无DR(NDR)患者22例(28眼)为NDR组,非增生型DR(NPDR)患者38例(48眼)为NPDR组,增生型DR(PDR)患者20例26眼为PDR组。采用OCTA检查患者视盘周围视网膜神经纤维层(pRNFL)厚度、黄斑神经节细胞复合体(GCC)厚度,采用Western blot检测患者外周血磷酸酶-张力蛋白基因(PTEN),采用荧光定量聚合酶链式反应(PCR)法检测患者外周血circRNA CPT1A。比较3组患者外周血circRNA CPT1A、PTEN以及pRNFL、GCC厚度,并采用Pearson相关分析患者circRNA CPT1A与PTEN、pRNFL厚度、GCC厚度的相关性。结果 PDR组患者外周血circRNA CPT1A均高于NDR组、NPDR组,而PDR组患者外周血PTEN均低于NDR组、NPDR组(均为P<0.05);NDR组与NPDR组患者外周血circ RNA CPT1A、PTEN差异均无统计学意义(均为P>0.05)。Pearson相关性分析结果显示,患者外周血circRNA CPT1A与PTEN呈负相关性(P<0.05)。随着疾病严重程度的增加,pRNFL以及GCC厚度均呈降低趋势,NDR组患者的整体、上半部分、下半部分pRNFL厚度以及GCC厚度均高于NPDR组(均为P<0.05),NPDR组患者以上指标均高于PDR组(均为P<0.05)。Pearson相关性分析结果显示,患者外周血circRNA CPT1A分别与受检眼的整体、上半部分、下半部分pRNFL厚度以及GCC厚度均呈负相关性(均为P<0.05)。结论 随着DR严重程度的增加,DR患者外周血circRNA CPT1A呈增加趋势,且与外周血PTEN、pRNFL厚度以及GCC厚度呈负相关性,其作用机制可能为circRNA CPT1A负性调控PTEN的表达,从而参与DR的发生、发展。Objective To investigate the expression of circular ribonucleic acid carnitine palmitoyltrans-ferase 1A(circRNA CPT1A)in patients with diabetic retinopathy(DR)and its mechanism of action on neuropathy.Methods Totally 80 patients(102 eyes)with type 2 diabetes admitted to our hospital from January 2019 to January 2022 were selected,including 22 patients(28 eyes)with no DR(NDR group),38 patients(48 eyes)with non-proliferative DR(NPDR group),and 20 patients(26 eyes)with proliferative DR(PDR group).Optical coherence tomography angiography was used to measure the thickness of the peripapillary retinal nerve fiber layer(pRNFL)and macular ganglion cell complex(GCC),the level of phosphatase and tensin homolog(PTEN)in peripheral blood was detected by Western blot,and the circRNA CPT1A level in peripheral blood was detected by fluorescence quantitative polymerase chain reaction.The levels of circRNA CPT1A and PTEN in peripheral blood,as well as the thickness of pRNFL and GCC,were compared among three groups,and Pearson correlation analysis was used to investigate the correlation between circRNA CPT1A and PTEN,pRNFL and GCC thickness.Results The circRNA CPT1A in the peripheral blood of the PDR group was higher than that in the NDR group and NPDR group;the PTEN in the peripheral blood of the PDR group was lower than that in the NDR group and NPDR group(all P<0.05).There was no statistically significant difference in the expression of circRNA CPT1A and PTEN between NDPR group and NDR group(all P>0.05).The Pearson correlation analysis showed that the expression level of circRNA CPT1A in peripheral blood was negatively correlated with PTEN(P<0.05).With the increase in disease severity,the thickness of pRNFL and GCC showed a decreasing trend;the thickness of pRNFL and GCC in the whole,upper and lower parts of eyes in the NDR group were higher than those in the NPDR group(all P<0.05),while those in the NPDR group were higher than the PDR group(all P<0.05).Pearson correlation analysis showed that the expression level of circRNA CPT

关 键 词：circRNA肉碱棕榈酰转移酶1A 磷酸酶-张力蛋白基因 糖尿病视网膜病变 神经组织病变 

分 类 号：R774.1[医药卫生—眼科]