Mechanism by which Rab5 promotes regeneration and functional recovery of zebrafish Mauthner axons

Rab5 is a GTPase protein that is involved in intracellular membrane trafficking. It functions by binding to various effector proteins and regulating cellular responses, including the formation of transport vesicles and their fusion with the cellular membrane. Rab5 has been reported to play an important role in the development of the zebrafish embryo;however, its role in axonal regeneration in the central nervous system remains unclear. In this study, we established a zebrafish Mauthner cell model of axonal injury using single-cell electroporation and two-photon axotomy techniques. We found that overexpression of Rab5 in single Mauthner cells promoted marked axonal regeneration and increased the number of intra-axonal transport vesicles. In contrast, treatment of zebrafish larvae with the Rab kinase inhibitor CID-1067700markedly inhibited axonal regeneration in Mauthner cells. We also found that Rab5 activated phosphatidylinositol 3-kinase(PI3K) during axonal repair of Mauthner cells and promoted the recovery of zebrafish locomotor function. Additionally, rapamycin, an inhibitor of the mechanistic target of rapamycin downstream of PI3K, markedly hindered axonal regeneration. These findings suggest that Rab5 promotes the axonal regeneration of injured zebrafish Mauthner cells by activating the PI3K signaling pathway.

Effect of lamellarization on the microstructure and mechanical properties of marine 10Ni5CrMoV steel

Multistage heat treatment involving quenching(Q),lamellarizing(L),and tempering(T)is applied to marine 10Ni5CrMoV steel.The microstructure and mechanical properties were studied by multiscale characterizations,and the kinetics of reverse austenite transformation,strain hardening behavior,and toughening mechanism were further investigated.The lamellarized specimens possess low yield strength but high toughness,especially cryogenic toughness.Lamellarization leads to the development of film-like reversed austenite at the martensite block and lath boundaries,refining the martensite structure and lowering the equivalent grain size.Kinetic analysis of austenite reversion based on the JMAK model shows that the isothermal transformation is dominated by the growth of reversed austenite,and the maximum transformation of reversed austenite is reached at the peak temperature(750℃).The strain hardening behavior based on the modified Crussard-Jaoul analysis indicates that the reversed austenite obtained from lamellarization reduces the proportion of martensite,significantly hindering crack propagation via martensitic transformation during the deformation.As a consequence,the QLT specimens exhibit high machinability and low yield strength.Compared with the QT specimen,the ductile-brittle transition temperature of the QLT specimens decreases from-116 to-130℃due to the low equivalent grain size and reversed austenite,which increases the cleavage force required for crack propagation and absorbs the energy of external load,respectively.This work provides an idea to improve the cryogenic toughness of marine 10Ni5CrMoV steel and lays a theoretical foundation for its industrial application and comprehensive performance improvement.

Assessment of the Southern Ocean Sea Surface Temperature Biases in CMIP5 and CMIP6 Models

This work evaluates the performances of climate models in simulating the Southern Ocean(SO)sea surface temperature(SST)by a large ensemble from phases 5 and 6 of the Coupled Model Intercomparison Project(CMIP5 and CMIP6).By combining models from the same community sharing highly similar SO SST biases and eliminating the effect of global-mean biases on local SST biases,the results reveal that the ensemble-mean SO SST bias at 70°-30°S decreases from 0.38℃ in CMIP5 to 0.28℃ in CMIP6,together with increased intermodel consistency.The dominant mode of the intermodel variations in the zonal-mean SST biases is characterized as a meridional uniform warm bias pattern,explaining 79.1% of the intermodel variance and exhibiting positive principal values for most models.The ocean mixed layer heat budget further demonstrates that the SST biases at 70°-50°S primarily result from the excessive summertime heating effect from surface net heat flux.The biases in surface net heat flux south of 50°S are largely impacted by surface shortwave radiation from cloud and clear sky components at different latitudes.North of 50°S,the underestimated westerlies reduce the northward Ekman transport and hence northward cold advection in models,leading to warm SST biases year-round.In addition,the westerly biases are primarily traced back to the atmosphere-alone model simulations forced by the observed SST and sea ice.These results disclose the thermal origin at the high latitude and dynamical origin at the low latitude of the SO SST biases and underscore the significance of the deficiencies of atmospheric models in producing the SO SST biases.

Gamma-glutamyl transferase 5 overexpression in cerebrovascular endothelial cells improves brain pathology,cognition,and behavior in APP/PS1 mice

In patients with Alzheimer’s disease,gamma-glutamyl transferase 5(GGT5)expression has been observed to be downregulated in cerebrovascular endothelial cells.However,the functional role of GGT5 in the development of Alzheimer’s disease remains unclear.This study aimed to explore the effect of GGT5 on cognitive function and brain pathology in an APP/PS1 mouse model of Alzheimer’s disease,as well as the underlying mechanism.We observed a significant reduction in GGT5 expression in two in vitro models of Alzheimer’s disease(Aβ_(1-42)-treated hCMEC/D3 and bEnd.3 cells),as well as in the APP/PS1 mouse model.Additionally,injection of APP/PS1 mice with an adeno-associated virus encoding GGT5 enhanced hippocampal synaptic plasticity and mitigated cognitive deficits.Interestingly,increasing GGT5 expression in cerebrovascular endothelial cells reduced levels of both soluble and insoluble amyloid-βin the brains of APP/PS1 mice.This effect may be attributable to inhibition of the expression ofβ-site APP cleaving enzyme 1,which is mediated by nuclear factor-kappa B.Our findings demonstrate that GGT5 expression in cerebrovascular endothelial cells is inversely associated with Alzheimer’s disease pathogenesis,and that GGT5 upregulation mitigates cognitive deficits in APP/PS1 mice.These findings suggest that GGT5 expression in cerebrovascular endothelial cells is a potential therapeutic target and biomarker for Alzheimer’s disease.

Correction to:METTL5 promotes cell proliferation,invasion,and migration by up-regulating Toll-like receptor 8 expression in colorectal cancer

Correction to“METTL5 promotes cell proliferation,invasion,and migration by up-regulating Toll-like receptor 8 expression in colorectal cancer”in World J Gastrointest Oncol 2024;16(5):2006-2017,published by Kong LS,Tao R,Li YF,Wang WB,and Zhao X.In this article,we added the correct images.

SlPGR5/SlPGRL1 pathway-dependent cyclic electron transport regulates photoprotection and chloroplast quality in tomato plants

The essential photoprotective role of proton gradient regulation 5(PGR5)-dependent cyclic electron flow(CEF)has been reported in Arabidopsis,rice,and algae.However,its functional assessment has not been performed in tomato yet.In this study,we focused on elucidate the function of SlPGR5 and SlPGR5-like photosynthetic phenotype 1(PGRL1)in tomato.We performed RNA interference and found that SlPGR5/SlPGRL1-suppressed transformants exhibited extremely low CO_(2)assimilation capacity,their photosystem I(PSI)and PSII were severely photoinhibited and chloroplasts were obviously damaged.The SlPGR5/SlPGRL1-suppressed plants almost completely inhibited CEF and Y(ND),and PSII photoinhibition may be directly related to the inability to produce sufficient proton motive force to induce NPQ.The transgenic plants overexpressing SlPGR5 and SlPGRL1 driven by 35S promoter capable alleviate photoinhibition of plants under low night temperature.The transcriptomic and proteomic analyses suggested that the nuclear gene transcription and turnover of chloroplast proteins,including the plastoglobule-related proteins,were closely related to SlPGR5/SlPGRL1 pathway dependent CEF.The bridge relationship between CEF and chloroplast quality maintenance was a novel report to our knowledge.In conclusion,these results revealed the regulatory mechanism of the SlPGR5/SlPGRL1 pathway in photoprotection and maintenance of chloroplast function in tomato,which is crucial for reduce yield loss,especially under adverse environmental conditions.

Evaluation of surface latent heat and sensible heat fluxes from ERA-5,GLDAS,and MODIS on different underlying surfaces in the Tibetan Plateau

Surface-latent heat(LE)and sensible heat(SH)fluxes play a pivotal role in governing hydrological,biological,geochemical,and ecological processes on the land surface in the Tibetan Plateau.However,to accurately assess and understand the spatial distribution of LE and SH fluxes across different underlying surfaces,it is crucial to verify the validity and reliability of ERA-5,GLDAS,and MODIS data against ground measurements obtained from the Flux Net micrometeorological tower network.This study analyzed the spatial patterns of LE and SH over the Tibetan Plateau using data from ERA-5,GLDAS,and MODIS.The results were compared with ground measurements from Flux Net tower observations on different underlying surfaces,and five statistical parameters(Pearson's r,LR slope,RMSE,MBE,and MAE)were used to validate the data.The results showed that:(1)MODIS LE data and ERA-5 SH data exhibited the closest agreement with ground observations,as indicated by their lowest root mean square error and mean bias area values.(2)The accuracy of ERA-5 SH was the highest in meadows and steppes,while GLDAS SH performed optimally in shrublands.Notably,MODIS LE consistently outperformed the other datasets across all vegetation types.(3)The spatial distribution of LE and SH displayed considerable heterogeneity,contingent upon the specific data sources and underlying surfaces.Notably,there was a contrasting trend between GLDAS and ERA-5,as well as MODIS,in terms of SH distribution in the shrubland.In shrublands and meadows,MODIS SH and LE exhibited more pronounced changes than ERA-5 and GLDAS.Additionally,ERA-5 SH demonstrated the opposite variation in meadow and steppe regions compared to GLDAS and MODIS.

基于YOLOv5s和Android部署的电气设备识别

针对变电站多种电气设备实时检测的需求,提出了一种基于改进YOLOv5s的电气设备识别方法,并设计基于Android部署的电气设备识别APP,以便对电气设备进行识别与学习。以电力变压器、绝缘子串等6种常见变电站电气设备为例构建图像数据集。数据集进行图像预处理后对YOLOv5s算法进行改进。通过引入C2f模块提高小目标检测精度,采用Soft-NMS提高检测框筛选能力,减少漏检和误检的情况,使用改进后的算法对数据集进行模型训练。将训练好的识别网络模型通过TensorFlow Lite框架进行模型部署,设计电气设备识别APP。经验证,改进后的变电站电气设备识别网络模型mAP稳定在91.6%,与原模型相比提高了3.3百分点。部署后的APP具有设备识别和设备介绍等界面,使用移动端进行识别时每张图片识别时间都小于1 s,具有较快的识别速度和较高的识别精度,可以高效地实现变电站电气设备的实时检测与设备学习。

科研课题式实验体系的建立与实践——“5+3”一体化医学免疫学实验教学的探索

医学免疫学的理论与技术广泛用于科学研究,教研组以医学免疫学实验教学为平台,在“5+3”一体化学生中开展了科研课题式实验体系实践,学生通过完成实验设计-实验操作-撰写论文的微型课题研究,在科研实践中培养了科研思维、锻炼了科研实践能力,普遍反映课程难度很大,但完成后收获颇丰。

胰腺癌中ADGRG5表达与临床预后及肿瘤免疫应答的关系

目的:探讨ADGRG5在胰腺癌(PAAD)中的表达与临床预后及肿瘤免疫应答的关系。方法:采用Wilcoxon秩和检验比较ADGRG5在PAAD和正常组织中的表达。ROC曲线评估ADGRG5在PAAD中的诊断价值,Kaplan-Meier法和Cox回归分析评估预后因素。GSEA和免疫浸润分析对ADGRG5的生物学功能进行注释。结果:ADGRG5在PAAD中的表达显著高于正常组织(P=2.8e-32),对PAAD具有显著诊断和预后预测能力(AUC=0.866)。高ADGRG5表达预测患者有更好的无进展间隔(PFI)(P=0.01),ADGRG5的表达与PFI独立相关(HR:0.656,95%CI:0.433~0.972,P=0.035)。ADGRG5表达与免疫通路调节和某些类型免疫浸润细胞的功能有关。结论:ADGRG5表达升高可能是PAAD诊断和预后的潜在生物标志物,影响PAAD患者预后,且与免疫浸润显著相关。

桃品种陇金5号栽培技术规程

甘肃省农业科学院林果花卉研究所针对甘肃省桃产业发展过程中对新品种的需求,通过多年的培育,选育出了品质优异的晚熟桃新品种陇金5号。从范围、规范性引用文件、术语和定义、品种来源、植物学特征、生物学特性、品质性状指标及栽培技术要点等方面对其规范,使其更好地服务于甘肃省桃产业发展。

5G远程机器人辅助袖状胃切除术首例报道

本文报道2023年12月14日完成5G远程机器人辅助袖状胃切除术1例,采用微创图迈腔镜手术机器人系统(MT-1000)和5G信号网络系统,双主刀模式,患者平台位于甘肃省人民医院手术室,主操控台位于甘肃省人民医院兰州新区分院手术室(两者直线距离75.6 km)。手术总时长120 min,其中装机时间30 min,机器人操作时间90 min。术中网络延迟(55.16±25.33)ms,丢包率0.01%~0.1%。未发生网络中断等网络不良事件,手术顺利完成。

慢病毒介导miR-140-5p过表达对内毒素诱导大鼠肝损伤的保护作用

目的:探究慢病毒介导miR-140-5p过表达对内毒素诱导大鼠肝损伤的保护作用。方法:40只大鼠随机分为对照组、模型组、miR-NC组和miR-140-5p-mimic组,每组10只。miR-NC组、miR-140-5p-mimic组分别尾静脉注射慢病毒空载体miR-NC、重组miR-140-5p,对照组、模型组尾静脉注射生理盐水。3 d后模型组、miR-NC组、miR-140-5p-mimic组大鼠腹腔注射10 mg/kg脂多糖,对照组大鼠腹腔注射生理盐水。注射后12 h处死所有大鼠,检测血清ALT、AST、内毒素、TNF-α、IL-6、IL-1β、SOD、MDA、CAT水平,HE、TUNEL染色观察肝组织病理形态与细胞凋亡情况。TargetScanHuman预测miR-140-5p和TLR4的结合位点,双荧光素酶报告基因检测分析miR-140-5p和TLR4的靶向调节关系。qRT-PCR检测肝组织miR-140-5p水平,qRTPCR、Western blot检测肝组织TLR4、MyD88、NF-κB mRNA和蛋白表达,Western blot检测p-NF-κB表达。结果:对照组肝小叶清晰可见,无肝细胞变性、坏死,无炎症细胞浸润;模型组、miR-NC组可见明显肝细胞坏死、空泡变性、充血,炎症细胞渗入肝窦;miR-140-5p-mimic组肝细胞充血、坏死、空泡变性和炎症细胞浸润情况较模型组、miR-NC组明显减少。miR-140-5p能够直接靶向作用于TLR4。与对照组相比,模型组、miR-NC组、miR-140-5p-mimic组ALT、AST、内毒素、凋亡细胞数、TNF-α、IL-6、IL-1β、MDA、TLR4、MyD88 mRNA与蛋白、NF-κB mRNA、p-NF-κB水平升高(P<0.05),SOD、CAT水平降低(P<0.05);与模型组、miR-NC组相比,miR-140-5p-mimic组ALT、AST、内毒素、凋亡细胞数、TNF-α、IL-6、IL-1β、MDA、TLR4、MyD88 mRNA与蛋白,以及NF-κB mRNA、p-NF-κB水平降低(P<0.05),SOD、CAT水平升高(P<0.05)。结论:过表达miR-140-5p能够降低内毒素诱导肝损伤大鼠的炎症反应、氧化应激水平,保护肝细胞,减轻肝脏的病理性损伤,其作用机制可能与TLR4/MyD88/NF-κB信号通路相关。

真武汤介导lncRNA NEAT1/miR-31-5p/IGFBP7分子轴抑制慢性心力衰竭进程的机制研究

目的:探讨真武汤通过lncRNA NEAT1/miR-31-5p/IGFBP7分子轴抑制慢性心力衰竭(CHF)进程的机制。方法:将雄性SD大鼠分为对照组、模型组、阳性对照组和真武汤低、中、高剂量组,每组各10只。除对照组外,其余各组采用腹腔注射阿霉素的方法建立CHF模型,阳性对照组给予美托洛尔灌胃,真武汤低、中、高剂量组给予真武汤(生药含量6、12、18 g/kg)灌胃。检测各组大鼠左心室射血分数(LVEF)、左心室短轴缩短率(LVFS),血清脑钠肽(BNP)水平,心脏体重比,心肌病理改变,心肌中肿瘤坏死因子-α(TNF-α)、白细胞介素-1β(IL-1β)、丙二醛(MDA)、超氧化物歧化酶(SOD)水平及lncRNA NEAT1、miR-31-5p、IGFBP7表达水平。培养大鼠心肌H9c2细胞,采用双荧光素酶报告基因实验检测lncRNA NEAT1靶向miR-31-5p、miR-31-5p靶向IGFBP7。结果:与模型组比较,真武汤低、中、高剂量组的LVEF、LVFS增加,血清BNP水平降低(P<0.05);与模型组比较,真武汤低、中、高剂量组的心肌TNF-α、IL-1β、MDA水平降低,SOD水平增加(P<0.05);与模型组比较,真武汤低、中、高剂量组的心肌lncRNA NEAT1、IGFBP7表达降低,miR-31-5p表达增加(P<0.05)。H9c2心肌细胞中,lncRNA NEAT1靶向miR-31-5p、miR-31-5p靶向IGFBP7。结论:真武汤可能通过lncRNA NEAT1/miR-31-5p/IGFBP7分子轴改善CHF大鼠心功能并减轻炎症反应、氧化应激反应。

葡萄糖(11%)注射液中有关物质5-羟色氨酸

目的建立测定脂肪乳氨基酸(17)葡萄糖(11%)注射液中色氨酸有关物质5-羟色氨酸含量的超高效液相色谱法。方法采用YMC-Triart C18色谱柱(2.0 mm×100 mm,1.9μm),以0.04 mol/L磷酸二氢钾溶液(用磷酸调节pH值至3.5)为流动相A,以甲醇为流动相B,流速为0.15 ml/min,检测波长为214 nm。结果5-羟色氨酸浓度在0.2078~12.47μg/ml范围内线性关系良好(r=1.000),检测限和定量限分别为6.1×10^(-6)μg和2.0×10^(-5)μg,平均回收率为100.0%,RSD为0.2%。结论本法准确可靠,灵敏度高,适用于脂肪乳氨基酸(17)葡萄糖(11%)注射液中有关物质5-羟色氨酸的含量测定。

OIP5-AS1通过VEGF165调控ADSCs-Exos分泌促进创面愈合的研究

目的探讨敲低Opa相互作用蛋白5-反义转录物1(opa-interactingprotein 5 antisense RNA 1,OIP5-AS1)的脂肪间充质干细胞外泌体(exosomes derived from ADSCs,ADSCs-Exos)在创面愈合中的作用机制。方法选取2024年2月至6月期间在延安大学附属医院接受选择性吸脂或手术整形的10例人体正常皮下脂肪组织,从中分离脂肪间充质干细胞(adipose-derived stem cell,ADSCs),提取外泌体,并鉴定外泌体标志蛋白肿瘤易感基因101(tumor susceptibility gene 101,TSG101)和CD9的表达。使用实时荧光定量聚合酶链式反应测定OIP5-AS1的表达。采用H_(2)O_(2)处理人永生化表皮细胞HaCaT,构建体外皮肤损伤模型。MTT法和流式细胞术检测细胞活力和凋亡。采用t检验、方差分析进行统计比较。结果ADSCs-Exos增加H2O2处理的HaCaT细胞活力,抑制细胞凋亡(t=4.358、5.654,均P<0.05)。与ADSCs相比,OIP5-AS1在ADSCs-Exos中表达显著上调(t=4.125,P<0.01),且敲低OIP5-AS1抑制了ADSCs-Exos对创面愈合的修复作用(t=3.367、6.674,均P<0.05)。敲低OIP5-AS1后抑制了血管内皮生长因子165(vascular endothelial growth factor 165,VEGF165)的表达(t=3.105,P<0.01),VEGF165过表达可部分逆转敲低OIP5-AS1对创面愈合的抑制作用(t=3.327、5.544,均P<0.05)。结论敲低OIP5-AS1的ADSC-Exos通过调控VEGF165的表达影响创面愈合过程,为皮肤创面愈合的治疗提供新靶点。

5E教学模式在药学专业有机化学课程中的应用

文章首先说明了5E教学模式在药学专业有机化学课程中应用的思路,然后论述了5E教学模式在药学专业有机化学课程中应用的流程,包括引入、探究、解释、迁移、评价五个环节,最后总结了5E教学模式在药学专业有机化学课程中应用的注意事项。

ERA5和ERA5-Land地面风速资料在中国陆地区域的适用性对比初步研究

利用全国40个地面台站的观测资料对ERA5及ERA5-Land两种不同空间分辨率的再分析资料开展了地面风速误差评估研究,结果表明:ERA5和ERA5-Land资料多年平均风速偏差的平均值分别为0.08 m s^(−1)、-0.06 m s^(−1),偏差的最大值分别为0.46 m s^(−1)、-0.19 m s^(−1),相对偏差的平均值为4.4%、-2.0%,相对偏差的最大值分别为33.0%、-10.1%;月平均风速线性拟合方程的斜率分别为0.93、0.97,截距分别为0.29 m s^(−1)、0.02 m s^(−1),相关系数分别为0.98、0.99;月平均风速均方根误差的平均值分别为0.17 m s^(−1)、0.14 m s^(−1),均方根误差的最大值分别为0.49 m s^(−1)、0.22 m s^(−1),相对均方根误差的平均值为7.4%、5.7%,相对均方根误差的最大值分别为35.2%、13.3%。ERA5-Land高分辨率资料地面风速误差相对较低,有利于提高风能资源评估的准确性。

CMIP5模式对江淮流域极端气候指数的模拟评估及预估

基于1976-2005年淮河流域260个区域站点观测资料及CMIP5中19个全球气候模式模拟的16个极端气候指数格点资料,利用空间相关系数、均方根误差方法对CMIP5各模式和多模式集合模拟的极端气候指数分别进行评估,并研究在RCP4.5情境下CMIP5优选模式的多模式集合预估2016-2045年和2071-2100年的江淮流域极端气候指数变化情况,结果表明:(1)CMIP5中有11个模式与站点观测的空间相关系数较高。其中,CCSM4、CMCC-CM模拟TXx的结果最好,ACCESS1-0、MPI-ESM-LR、MPI-ESM-MR和GFDL-ESM2M对于TNn具有较好的模拟能力,ACCESS1-0、CMCC-CM对Rx1day具有良好的模拟能力。(2)CMIP5多模式集合模拟结果能很好地再现1976-2005年R95p、R99p、CDD的空间分布特点,但是对GSL、CSDI及极端气候强度指数模拟的结果与站点资料偏差较大。(3)在RCP4.5情境下,CMIP5多模式集合模拟的江淮流域极端气候指数中,在2016-2045年的TXx普遍增加了1.0℃左右,TNn在安徽省北部和河南省东部增加了约1.8℃,Rx1day和Rx5day的高增长区集中在河南省北部;2071-2100年,TXx和TNn增长幅度大于2.1℃,Rx1day和Rx5day各站点增长幅度的差异减弱。

血清LncRNA HCG11及miR-26b-5p与急性缺血性脑卒中患者脑梗死面积及功能预后的相关性

目的研究急性缺血性脑卒中患者血清长链非编码RNA人类白细胞抗原复合物组11(long non coding RNA human leukocyte antigen complex group 11,LncRNA HCG11)及微小核糖核酸-26b-5p(microRNA-26b-5p,miR-26b-5p)水平与脑梗死面积及功能预后的相关性。方法选取2021年1月至2022年12月本院收治的急性缺血性脑卒中患者106例,根据梗死面积将其分为小面积组、中面积组和大面积组,随访1年后根据改良Rankin量表(modified Rankin Scale,mRS)分为预后良好组和预后不良组。采用qRT-PCR检测LncRNA HCG11,miR-26b-5p相对表达量;采用Logistic回归分析影响患者预后的因素;绘制受试者工作特征(receiver operating characteristic,ROC)曲线分析LncRNA HCG11和miR-26b-5p对患者梗死面积的诊断及对预后的预测价值。采用Spearman相关分析LncRNA HCG11、miR-26b-5p与梗死面积及美国国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NHISS)的相关性。结果急性缺血性脑卒中大面积梗死患者的LncRNA HCG11水平升高,miR-26b-5p水平降低(P<0.05);与预后良好患者相比,预后不良患者的LncRNA HCG11水平升高,miR-26b-5p水平降低(P<0.05);不同梗死面积患者高血压史、高血脂史以及NHISS评分、C-反应蛋白(C-reactive protein,CRP)之间比较,差异具有统计学意义(P<0.05);LncRNA HCG11与梗死面积及NHISS均呈正相关(r_(梗死面积)=0.553,P_(梗死面积)<0.001;r_(NHISS)=0.462,P_(NHISS)<0.001),miR-26b-5p与梗死面积及NHISS均呈负相关(r'_(梗死面积)=-0.534,P'_(梗死面积)<0.001;r'_(NHISS)=-0.447,P'_(NHISS)<0.001);miR-26b-5p为影响患者预后不良的保护因素,高血压史、NHISS评分、CRP和LncRNA HCG11为患者预后不良的影响因素(P<0.05);LncRNA HCG11和miR-26b-5p及联合诊断患者梗死面积优于单独指标诊断(Z_(LncRNA HCG11)=3.049,P_(LncRNA HCG11)=0.002;Z_(miR-26b-5p)=2.657,P_(miR-26b-5p)=0.008,AUC=0.937);且LncRNA HCG11+miR-26b-5p对患者预后的预测能力显著优于LncRNA HCG11、miR-26b-5p、CRP、NHISS单独指标(Z_(LncRNA HCG11)=2.207,P_(LncRNA HCG11)=0.027;Z_(miR-26b-5p)=2.080,P_(miR-26b-5p)=0.038;Z_(CRP)=2.341,P_(CRP)=0.019;Z_(NHISS)=2.093,P_(NHISS)=0.036,AUC=0.892);LncRNA HCG11与miR-26b-5p呈负相关(r=-0.425,P<0.05)。结论急性缺血性脑卒中患者血清LncRNA HCG11水平升高,miR-26b-5p水平降低,均为患者脑梗死面积及功能预后的影响因素,对患者脑梗死面积及功能预后具有一定的诊断及预测价值。