Transurethral prostate enucleation with 2 μm laser in treatment of benign prostatic hyperplasia

Objective To investigate the feasibility and efficacy of transurethral prostate enucleation with 2 μm laser in treatment of benign prostatic hyperplasia ( BPH) . Methods One hundred and seven patients with BPH were treated by transurethral prostate enucleation with 2 μm la-

M2型巨噬细胞衍生外泌体促进小胶质细胞M2型极化

背景:目前对于M2型巨噬细胞衍生外泌体的研究多集中于促进伤口愈合及成骨细胞的增殖和分化,而很少有研究关注其对小胶质细胞表型的调控作用。目的:探讨M2型巨噬细胞衍生外泌体对于小胶质细胞的表型调控作用及分子机制。方法:①提取骨髓原代巨噬细胞,用50 ng/m L白细胞介素4刺激巨噬细胞24 h促进巨噬细胞M2型极化,流式细胞术和细胞免疫荧光鉴定M2型巨噬细胞标志物CD206;②提取和鉴定M2型巨噬细胞衍生外泌体;③将小胶质细胞BV2随机分为3组:对照组、脂多糖组、治疗组,对照组不做处理,脂多糖组加入500 ng/m L脂多糖干预24 h,治疗组同时加入500 ng/m L脂多糖和25μg/m L M2型巨噬细胞衍生外泌体干预24 h,ELISA检测培养上清中肿瘤坏死因子α和白细胞介素10的分泌量,q RT-PCR检测细胞中诱导型一氧化氮合酶、精氨酸酶1、白细胞介素1β和白细胞介素10的m RNA表达,Western blot检测诱导型一氧化氮合酶、精氨酸酶1的蛋白表达以及核因子κB信号通路相关蛋白表达。结果与结论:①ELISA结果显示,与对照组相比,脂多糖组肿瘤坏死因子α分泌明显增多;与脂多糖组相比,治疗组肿瘤坏死因子α的分泌减少而白细胞介素10的分泌增多;②q RT-PCR结果显示,与对照组相比,脂多糖组白细胞介素1β、诱导型一氧化氮合酶m RNA表达升高;与脂多糖组相比,治疗组白细胞介素1β、诱导型一氧化氮合酶m RNA表达降低,白细胞介素10、精氨酸酶1 m RNA表达升高;③Western blot结果显示,与对照组相比,脂多糖组诱导型一氧化氮合酶蛋白表达升高;与脂多糖组相比,治疗组诱导型一氧化氮合酶蛋白表达降低,而精氨酸酶1蛋白表达升高;(4)与对照组相比,脂多糖组核因子κB信号通路中P65、p-IκB-α蛋白表达降低;与脂多糖组相比,治疗组P65、p-IκB-α蛋白表达升高。结果表明:M2型巨噬细胞衍生外泌体可以显著抑制脂多糖诱导小胶质细胞的炎症反应,促进抗炎因子白细胞介素10的表达,抑制促炎因子肿瘤坏死因子α、白细胞介素1β的表达,促进小胶质细胞表型由M1型向M2型极化,其机制可能与M2型巨噬细胞衍生外泌体抑制核因子κB信号通路激活有关。

Recombinant chitinase-3-like protein 1 alleviates learning and memory impairments via M2 microglia polarization in postoperative cognitive dysfunction mice

Postoperative cognitive dysfunction is a seve re complication of the central nervous system that occurs after anesthesia and surgery,and has received attention for its high incidence and effect on the quality of life of patients.To date,there are no viable treatment options for postoperative cognitive dysfunction.The identification of postoperative cognitive dysfunction hub genes could provide new research directions and therapeutic targets for future research.To identify the signaling mechanisms contributing to postoperative cognitive dysfunction,we first conducted Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses of the Gene Expression Omnibus GSE95426 dataset,which consists of mRNAs and long non-coding RNAs differentially expressed in mouse hippocampus3 days after tibial fracture.The dataset was enriched in genes associated with the biological process"regulation of immune cells,"of which Chill was identified as a hub gene.Therefore,we investigated the contribution of chitinase-3-like protein 1 protein expression changes to postoperative cognitive dysfunction in the mouse model of tibial fractu re surgery.Mice were intraperitoneally injected with vehicle or recombinant chitinase-3-like protein 124 hours post-surgery,and the injection groups were compared with untreated control mice for learning and memory capacities using the Y-maze and fear conditioning tests.In addition,protein expression levels of proinflammatory factors(interleukin-1βand inducible nitric oxide synthase),M2-type macrophage markers(CD206 and arginase-1),and cognition-related proteins(brain-derived neurotropic factor and phosphorylated NMDA receptor subunit NR2B)were measured in hippocampus by western blotting.Treatment with recombinant chitinase-3-like protein 1 prevented surgery-induced cognitive impairment,downregulated interleukin-1βand nducible nitric oxide synthase expression,and upregulated CD206,arginase-1,pNR2B,and brain-derived neurotropic factor expression compared with vehicle treatment.Intraperitoneal administration of the specific ERK inhibitor PD98059 diminished the effects of recombinant chitinase-3-like protein 1.Collectively,our findings suggest that recombinant chitinase-3-like protein 1 ameliorates surgery-induced cognitive decline by attenuating neuroinflammation via M2 microglial polarization in the hippocampus.Therefore,recombinant chitinase-3-like protein1 may have therapeutic potential fo r postoperative cognitive dysfunction.

Electrokinetic-mechanism of water and furfural oxidation on pulsed laser-interlaced Cu_(2)O and CoO on nickel foam

The electrocatalytic oxidation of biomass-derived furfural(FF)feedstocks into 2-furoic acid(FA)holds immense industrial potential in optics,cosmetics,polymers,and food.Herein,we fabricated Co O/Ni O/nickel foam(NF)and Cu_(2)O/Ni O/NF electrodes via in situ pulsed laser irradiation in liquids(PLIL)for the bifunctional electrocatalysis of oxygen evolution reaction(OER)and furfural oxidation reaction(FOR),respectively.Simultaneous oxidation of NF surface to NiO and deposition of CoO and/or Cu_(2)O on NF during PLIL offer distinct advantages for enhancing both the OER and FOR.CoO/NiO/NF electrocatalyst provides a consistently low overpotential of~359 m V(OER)at 10 m A/cm^(2),achieving the maximum FA yield(~16.37 m M)with 61.5%selectivity,79.5%carbon balance,and a remarkable Faradaic efficiency of~90.1%during 2 h of FOR at 1.43 V(vs.reversible hydrogen electrode).Mechanistic pathway via in situ electrochemical-Raman spectroscopy on CoO/NiO/NF reveals the involvement of phase transition intermediates(NiOOH and CoOOH)as surface-active centers during electrochemical oxidation.The carbonyl carbon in FF is attacked by hydroxyl groups to form unstable hydrates that subsequently undergo further oxidation to yield FA products.This method holds promise for large-scale applications,enabling simultaneous production of renewable building materials and fuel.

Memristive feature and mechanism induced by laser-doping in defect-free 2D semiconductor materials

Memristors as non-volatile memory devices have gained numerous attentions owing to their advantages in storage,in-memory computing, synaptic applications, etc. In recent years, two-dimensional(2D) materials with moderate defects have been discovered to exist memristive feature. However, it is very difficult to obtain moderate defect degree in 2D materials, and studied on modulation means and mechanism becomes urgent and essential. In this work, we realized memristive feature with a bipolar switching and a configurable on/off ratio in a two-terminal MoS_(2) device(on/off ratio ~100), for the first time, from absent to present using laser-modulation to few-layer defect-free MoS_(2)(about 10 layers), and its retention time in both high resistance state and low resistance state can reach 2×10^(4) s. The mechanism of the laser-induced memristive feature has been cleared by dynamic Monte Carlo simulations and first-principles calculations. Furthermore, we verified the universality of the laser-modulation by investigating other 2D materials of TMDs. Our work will open a route to modulate and optimize the performance of 2D semiconductor memristive devices.

Investigations on MoS_(2)plasma by infra-red pulsed laser irradiation in high vacuum

MoS_(2)targets were irradiated by infra-red(IR)pulsed laser in a high vacuum to determine hot plasma parameters,atomic,molecular and ion emission,and angular and charge state distributions.In this way,pulsed laser deposition(PLD)of thin films on graphene oxide substrates was also realized.An Nd:YAG laser,operating at the 1064 nm wavelength with a 5 ns pulse duration and up to a 1 J pulse energy,in a single pulse or at a 10 Hz repetition rate,was employed.Ablation yield was measured as a function of the laser fluence.Plasma was characterized using different analysis techniques,such as time-of-flight measurements,quadrupole mass spectrometry and fast CCD visible imaging.The so-produced films were characterized by composition,thickness,roughness,wetting ability,and morphology.When compared to the MoS_(2)targets,they show a slight decrease of S with respect to Mo,due to higher ablation yield,low fusion temperature and high sublimation in vacuum.The pulsed IR laser deposited Mo Sx(with 1<x<2)films are uniform,with a thickness of about 130 nm,a roughness of about 50 nm and a higher wettability than the MoS_(2)targets.Some potential applications of the pulsed IR laser-deposited Mo Sx films are also presented and discussed.

RBMX通过下调PKM2抑制膀胱癌细胞的增殖、迁移、侵袭和糖酵解

目的探讨X连锁RNA结合基序蛋白(RBMX)对膀胱癌细胞(1376细胞和UC-3细胞)的增殖、迁移、侵袭的影响以及其在糖酵解中的作用。方法采用慢病毒表达系统和siRNA干扰技术,分别构建RBMX过表达和敲低的膀胱癌细胞模型(1376细胞和UC-3细胞)。采用RT-qPCR和Westernblotting分别在mRNA水平和蛋白水平上检测细胞模型是否构建成功。通过EdU增殖实验和克隆形成实验检测过表达和敲低RBMX后细胞的生长和集落形成能力,同时通过Transwell实验分析过表达和敲低RBMX后对细胞迁移、侵袭能力的影响;随后,采用Westernblotting检测过表达和敲低RBMX后糖酵解关键蛋白PKM1(M1型丙酮酸激酶)和PKM2(M2型丙酮酸激酶)的表达变化;最后,利用葡萄糖和乳酸检测试剂盒分析过表达和敲低RBMX对膀胱癌细胞糖酵解的影响。结果RT-qPCR和Westernblotting结果显示,过表达RBMX膀胱癌细胞的mRNA和蛋白表达水平显著高于阴性对照组(P<0.05),敲低RBMX膀胱癌细胞的mRNA和蛋白表达水平显著低于阴性对照组(P<0.05)。过表达RBMX明显抑制膀胱癌细胞的增殖、克隆形成、迁移和侵袭,敲低RBMX则作用相反。Westernblotting实验结果显示,过表达RBMX使PKM1表达上升,PKM2表达下降,敲低RBMX则作用相反。葡萄糖消耗及乳酸生成实验表明,过表达RBMX均能抑制膀胱癌细胞葡萄糖消耗及乳酸生成(P<0.05),敲低RBMX均能促进膀胱癌细胞葡萄糖消耗及乳酸生成(P<0.05)。结论RBMX通过下调PKM2抑制膀胱癌的发生发展和糖酵解能力,有望成为膀胱癌诊断和治疗的潜在分子靶标。

过表达lncRNAHEM2M改善非酒精性脂肪肝病小鼠的肝脏损伤

目的探讨过表达长链非编码RNA(lncRNA)HEM2M对非酒精性脂肪肝病(NAFLD)小鼠肝损伤的影响。方法野生型C57BL/6(WT)和条件性髓系细胞lncRNAHEM2M过表达(MYKI)小鼠分别喂饲普通饮食(ND)和高脂饮食(HFD),即为WT+ND、MYKI+ND、WT+HFD和MYKI+HFD组。12周后行腹腔糖耐量及胰岛素耐量试验后处死小鼠,检测小鼠血清和肝脏组织的肝功能指标,制备肝脏组织切片后行HE染色和F4/80免疫组化染色,ELISA法检测肝脏组织中IL-6、IL-1β和TNF-α水平,qRT-PCR检测M1型(TNF-α、iNOS和IL-6)和M2型(Arg-1、YM-1和IL-10)巨噬细胞标志物mRNA表达,免疫印迹检测肝脏组织中P-AKT、T-AKT、NLRC4、caspase-1和GSDMD蛋白表达,比色法和免疫荧光测定肝脏组织caspase-1活性。结果与HFD喂饲的WT小鼠相比,MYKI+HFD小鼠肝功能损伤减轻(P<0.01),肝脏脂肪变缓解,肝脏巨噬细胞浸润减少,糖耐量损伤及胰岛素抵抗改善(P<0.01);MYKI+HFD小鼠肝脏组织IL-6、IL-1β和TNF-α水平降低(P<0.01),M1型巨噬细胞标志物mRNA表达减少(P<0.01),M2型mRNA表达增加(P<0.01);MYKI+HFD小鼠肝脏组织NLRC4炎症小体活性降低(P<0.01),活性caspase-1减少,GSDMD-N蛋白表达降低(P<0.05)。结论过表达lncRNAHEM2M降低NAFLD小鼠肝脏炎症因子水平,进而改善胰岛素抵抗并抑制肝脏NLRC4炎症小体激活,减少肝细胞焦亡,最终改善NAFLD小鼠肝脏损伤。

Microstructure of TA2/TA15 graded structural material by laser additive manufacturing process

TA2/TA15 graded structural material（GSM） was fabricated by the laser additive manufacturing（LAM） process. The chemical composition, microstructure and micro-hardness of the as-deposited GSM were investigated. The results show that the TA2 part of exhibiting near-equiaxed grains was Widmanst？tten α-laths microstructure. The TA15 part containing large columnar grains was fine basket-weave microstructure. The graded zone was divided into four deposited layers with 3000 μm in thickness. As the distance from the TA2 part increases, the alloy element contents and the β phase volume fraction increase, the α phase volume fraction decreases and the microstructure shows the evolution from Widmanst？tten α-laths to basket-weave α-laths gradually. The micro-hardness increases from the TA2 part to the TA15 part due to the solid solution strengthening and grain boundary strengthening.

Synthesis of Y_2O_3 particle enhanced Ni/TiC composite on TC4 Ti alloy by laser cladding

A Y2O3 particle enhanced Ni/TiC composite coating was fabricated in-situ on a TC4 Ti alloy by laser surface cladding. The phase component, microstructure, composition distribution and properties of the composite layer were investigated. The composite layer has graded microstructures and compositions, due to the fast melting followed by rapid solidification and cooling during laser cladding. The TiC powders are completely dissolved into the melted layer during melting and segregated as fine dendrites when solidified. The size of TiC dendrites decreases with increasing depth. Y2O3 fine particles distribute in the whole clad layer. The Y2O3 particle enhanced Ni/TiC composite layer has a quite uniform hardness along depth with a maximum value of HV1380, which is 4 times higher than the initial hardness. The wear resistance of the Ti alloy is significantly improved after laser cladding due to the high hardness of the composite coating.

基于m×2正则化交叉验证的神经网络超参数调优方法

超参数调优是神经网络建模的关键问题。针对传统的超参数调优方法存在的问题,该文提出了一种基于m×2正则化交叉验证的超参数调优方法。目的是给出一种适用于复杂模型、大数据集背景下的计算开销较小且稳健的超参数调优方法。该方法的思想是从完整的数据集上选取少部分数据进行调优,避免模型在数据集较大时非常耗时的超参数调优难题;在m×2交叉验证的基础上设置正则化条件均衡训练集与验证集之间的分布差异,从而减少分布不一致带来的性能波动;使用信噪比作为调优的优化目标,从而可以综合考虑模型性能评价指标的均值和方差;并采用正交设计选择相关性较低的超参数组合以提高调优效率。以命名实体任务为例进行实验,在CoNLL 2003数据集上的实验结果显示,提出的调优方法能够选到和网格搜索性能上没有显著差异的超参数组合,且调优时间可显著降低约66%。

Spectral and laser properties of Yb and Ho co-doped(YLa)_2O_3 transparent ceramic

Highly transparent Yb,Ho doped（YLa）2O3 ceramic was fabricated by conventional ceramic processing with nanopowders.The absorption and emission spectra of the ceramic was investigated.The energy transfer mechanism between Yb3＋ and Ho3＋ was also discussed.The strong emission band around 2 μm indicated that the Yb-Ho：（Y 0.90 La 0.10）2O3 transparent ceramic is a promising gain medium for the generation of 2 μm laser emissions.The laser operation of Yb-Ho co-doped（YLa）2O3 ceramic at 2.1 μm is first reported.

Interface characteristics of Al_2O_3－13%TiO_2 ceramic coatings prepared by laser cladding

Al2O3-13%TiO2 （mass fraction） coatings, prepared by laser cladding on nickel-based alloy, were heated using high frequency induction sources. The coating microstructure and the interface between bond coating and ceramic coating were characterized by SEM, XRD and EDS. The results show that two-layer substructure exists in the ceramic coating： one layer evolving from fully melted region where the sintered grains grow fully; another layer resembling the liquid-phase-sintered structure consisting of three-dimensional net where the melted Al2O3 particles are embedded in the TiO2-rich matrix. The mechanism of the two-layer substructure formation is also explained in terms of the melting and flattening behavior of the powders during laser cladding processing. The spinel compounds NiAl2O4 and acicular compounds Cr2O3 are discovered in the interface between bond coating and ceramic coating. It proves that the chemical reactions in the laser cladding process will significantly enhance the coating adhesion.

转基因抗虫玉米LG11中m2cryAb-vip3A融合基因及其蛋白的表达分析

抗虫转基因作物中杀虫蛋白的表达量对抗虫效果至关重要,研究外源Bt基因在作物不同生育时期和不同组织器官中的时空表达模式,对于抗虫转基因玉米产业化后的害虫抗性治理和农业转基因生物安全管理具有重要意义。LG11抗虫转基因玉米中的抗虫基因是山东省农业科学院通过人工合成方法将外源Bt杀虫蛋白Cry1Ab和Vip3Aa的主要结构域组合形成的新型抗虫融合蛋白M2cryAb-vip3A,连续两年对该转化体材料抗虫基因m2cryAb-vip3A的表达模式进行分析,利用实时定量PCR方法从转录水平对LG11苗期的根、茎和叶,吐丝期的根和茎,成熟期的根、叶和籽粒中的m2cryAb-vip3A基因的表达模式进行分析;利用酶联免疫吸附法(ELISA)从翻译水平对苗期的根、茎和叶,吐丝期的根、茎、花丝和花粉,成熟期的根、茎、叶、籽粒和苞叶中的M2cryAb-vip3A蛋白表达量进行测定。结果表明,m2cryAb-vip3A抗虫融合基因及其编码蛋白在抗虫转基因玉米不同生育时期的不同组织器官中表达差异较大,以幼苗期叶片中的表达量最高。该研究结果可为LG11未来的商业化推广和农业转基因生物安全管理提供有用的信息。

白介素-35在M2型巨噬细胞中的表达及其对前列腺癌细胞的增殖、侵袭和上皮间质转化的影响

目的探讨白介素(IL)-35在巨噬细胞中的表达及其对前列腺癌(PCa)细胞增殖、侵袭和上皮间质转化(EMT)的影响和机制。方法检测巨噬细胞标记分子CD68、M1型标记分子肿瘤坏死因子-α(TNF-α)、IL-1β和M2型标记分子CD206、IL-10在人单核/巨噬细胞系THP-1细胞诱导分化后的M0、M1与M2型巨噬细胞中的表达。使用不同类型的巨噬细胞-源条件培养液(CM)处理PCa细胞系PC-3,并将其分为:M0-CM组、M1-CM组、M2-CM组和预先使用IL-35中和抗体(IL-35 NA)干预的M2-CM处理组(M2-CM+IL-35 NA组)。检测各组中PC-3细胞的增殖活力、侵袭、EMT,以及细胞内JAK/STAT信号通路p-JAK2/JAK2与p-STAT3/STAT3比值的差异。结果与未刺激的THP-1细胞比较,M0、M1和M2型巨噬细胞中CD68 mRNA表达升高(P<0.01);与M0型巨噬细胞比较,TNF-α、IL-1βmRNA在M1型巨噬细胞中升高(P<0.01),而CD206、IL-10 mRNA在M2型巨噬细胞中升高(P<0.01);与M0-CM组比较,M2-CM组PC-3细胞增殖活力、侵袭、EMT和细胞内p-JAK2/JAK2、p-STAT3/STAT3比值升高(P<0.05),M2-CM+IL-35 NA组PC-3细胞的增殖活力、侵袭、EMT和细胞内p-JAK2/JAK2、p-STAT3/STAT3比值均显著降低(P<0.05),M1-CM组PC-3细胞的增殖活力、侵袭、EMT和细胞内p-JAK2/JAK2、p-STAT3/STAT3比值均无显著改变(P>0.05);与M2-CM组比较,M1-CM组和M2-CM+IL-35 NA组增殖活力、侵袭、EMT和细胞内p-JAK2/JAK2、p-STAT3/STAT3比值降低(P<0.05)。结论M2型巨噬细胞可通过分泌IL-35来促进PC-3细胞的增殖、侵袭和EMT,这可能与IL-35能上调JAK2/STAT3信号通路的活化相关。

西地那非通过促进巨噬细胞M2型极化缓解慢性盆腔疼痛大鼠痛觉和炎症

目的:探讨磷酸二酯酶5(PDE5)抑制剂西地那非对巨噬细胞极化介导的慢性盆腔疼痛痛觉和炎症的机制。方法:32只成年Wistar大鼠随机分为4组:Sham组、实验性自身免疫性前列腺炎(EAP)组、Sildenafil^(+)EAP组、MET^(+)Sildenafil^(+)EAP组,每组8只。皮下注射前列腺抗原(PAg)和弗氏完全佐剂诱导EAP模型,Sham组注射等量生理盐水,西地那非治疗EAP大鼠,另外,Sildenafil^(+)EAP处理基础上注射巨噬细胞M2型极化抑制剂二甲双胍。HE染色分析前列腺组织病理变化;von Frey纤维法检测大鼠盆腔痛觉反应率;ELISA检测血清细胞因子IL-10和TNF-α水平。流式细胞术检测血清iNOS^(+)和CD16/32^(+)巨噬细胞数量及CD206^(+)、CD10^(+)巨噬细胞数量。结果:与Sham组相比,EAP组前列腺腹侧腺体组织出现明显局灶性或多灶性炎症,盆腔痛觉反应率、血清炎症因子TNF-α水平、巨噬细胞M1型极化特征iNOS^(+)和CD16/32^(+)细胞数量显著升高(均P<0.05),而巨噬细胞M2型极化特征IL-10水平和CD206^(+)、CD10^(+)巨噬细胞数量显著减少(均P<0.05)。与EAP组相比,Sildenafil^(+)EAP组盆腔痛觉反应率、TNF-α水平、iNOS^(+)和CD16/32^(+)细胞数量显著降低(均P<0.05),而IL-10水平和CD206^(+)、CD10^(+)巨噬细胞数量显著升高(均P<0.05)。与Sildenafil^(+)EAP组相比,MET^(+)Sildenafil^(+)EAP组盆腔痛觉反应率、TNF-α水平、iNOS^(+)和CD16/32^(+)细胞数量显著升高(均P<0.05),而IL-10水平和CD206^(+)与CD10^(+)巨噬细胞数量显著降低(均P<0.05)。结论:PDE5抑制剂西地那非通过促进M2巨噬细胞极化阻断慢性盆腔疼痛和炎症。

超声造影联合血清Ficolin-3,FOXM1对2型糖尿病下肢动脉病变的诊断价值分析

目的超声造影联合血清纤维胶凝蛋白-3(Ficolin-3)、叉头框蛋白M1(FOXM1)对2型糖尿病(T2DM)下肢动脉病变的诊断价值分析。方法选取2022年2月至2023年2月我院收治的T2DM患者114例,以下肢动脉血管造影检查为金标准,将患者分为下肢动脉病变组23例(病变组)和无下肢动脉病变组91例(T2DM组),另选取同期于本院进行体检的健康志愿者91例为对照组。对患者及健康志愿者进行血清Ficolin-3、FOXM1及超声造影检查;ROC曲线分析血清Ficolin-3、FOXM1对T2DM下肢动脉病变的诊断价值;采用四格表法分析血清Ficolin-3、FOXM1、超声造影及3项联合对T2DM下肢动脉病变的诊断价值。结果病变组、T2DM组血清Ficolin-3水平显著高于对照组,且病变组血清Ficolin-3水平显著高于T2DM组(均P<0.05);病变组、T2DM组血清FOXM1水平显著低于对照组,且病变组血清FOXM1水平显著低于T2DM组(均P<0.05);血清Ficolin-3诊断T2DM下肢动脉病变的曲线下面积为0.868,敏感度为86.96%,特异度为75.82%,最佳截断值为35.12μg/ml;血清FOXM1诊断T2DM下肢动脉病变的曲线下面积为0.854,敏感度为82.61%,特异度为78.02%,最佳截断值为0.57;血清Ficolin-3、FOXM1检查结果与金标准均具有中度一致性(Kappa=0.480、0.481,均P<0.001);超声造影检查结果显示,T2DM下肢动脉病变的阳性检出率为73.91%,与金标准具有较高一致性(Kappa=0.631,P<0.001);3项联合检测的敏感度、漏诊率均显著优于超声造影单独诊断,准确度显著优于Ficolin-3、FOXM1单独诊断,差异均有统计学意义(均P<0.05)。结论血清Ficolin-3、FOXM1联合超声造影检查在T2DM下肢动脉病变诊断中的应用价值较高,进一步提升了诊断的敏感度、准确度,减少了误诊率。

老年心力衰竭并发肺炎患者血清FOXM1和IGF2表达水平及与预后价值研究

目的探究血清叉头盒蛋白M1(forkhead box protein M1,FOXM1)和胰岛素样生长因子2(insulin-like growth factor 2,IGF2)表达对老年心力衰竭合并肺炎患者预后的预测价值。方法将邯郸市中心医院2021年3月~2022年6月收治的126例老年心力衰竭并发肺炎患者设为病例组,并根据随访情况将122例患者分为预后不良组(n=33)和预后良好组(n=89),另选取该院同期126例健康体检者为对照组。检测两组(病例组和对照组)血清FOXM1和IGF2水平,检测病例组用力肺活量(forced vital capacity,FVC)和第一秒用力呼容积(forced expiratory volume in one second,FEV1)。采用Spearman分析法分析老年心力衰竭并发肺炎患者血清FOXM1和IGF2水平与心功能分级的相关性;受试者工作特征(receiver operating characteristic,ROC)曲线分析血清FOXM1和IGF2水平对老年心力衰竭并发肺炎患者预后的预测价值。结果与对照组比较,病例组血清FOXM1(2.39±0.55 vs 1.06±0.21)和IGF2(71.33±7.96pg/ml vs 47.82±5.14pg/ml)水平明显较高,差异有统计学意义(t=25.358,27.581,均P<0.05);与预后良好组比较,预后不良组血清FOXM1(3.87±1.06 vs 1.95±0.51)和IGF2水平(85.88±9.54pg/ml vs 69.14±8.73pg/ml)明显较高,差异具有统计学意义(t=13.453,9.174,均P<0.05);预后良好组和预后不良组心功能分级比较差异有统计学意义(χ^(2)=7.120,P<0.05),且与预后不良组比较,预后良好组FEV1(1.24±0.32L vs 1.08±0.25L)和FEV1/FVC(55.46%±5.77%vs 52.30%±5.38%)明显较高,差异有统计学意义(t=2.592,2.735,均P<0.05);老年心力衰竭并发肺炎患者血清FOXM1水平和IGF2水平与心功能分级呈显著正相关(r=0.496,0.517,均P<0.05)。ROC曲线结果显示,血清FOXM1单独预测老年心力衰竭并发肺炎患者预后的曲线下面积(area under the curve,AUC)为0.854(95CI%:0.779~0.912),其敏感度、特异度分别为75.76%,86.52%,最佳截断值为2.75;IGF2单独预测老年心力衰竭并发肺炎患者预后的AUC为0.874(95CI%:0.802~0.927),其敏感度、特异度分别为72.73%,85.39%,最佳截断值为78.30 pg/ml;二者联合预测老年心力衰竭并发肺炎患者预后的AUC显著大于血清FOXM1和IGF2单独诊断的AUC(Z=2.413,2.737,P=0.006,0.016)。结论血清FOXM1和IGF2水平在老年心力衰竭并发肺炎患者中升高,且二者联合检测对患者预后具有较高的预测价值。

TRPM7和BTG2在宫颈癌组织中的表达及临床意义

目的探讨瞬时受体电位M7通道(TRPM7)和B细胞迁移基因2(BTG2)在宫颈癌组织中的表达及临床意义。方法选取2018年5月至2020年5月石家庄市妇幼保健院收治的110例宫颈癌患者作为研究对象,术中取其肿瘤组织及癌旁组织,根据随访情况分为预后良好组与预后不良组。采用免疫组化法检测癌旁组织和肿瘤组织中TRPM7、BTG2蛋白表达,分析TRPM7、BTG2蛋白表达水平与患者临床病理特征的关系,比较预后不良组与预后良好组肿瘤组织中TRPM7、BTG2蛋白表达,采用Cox回归分析宫颈癌患者预后的影响因素,采用Kaplan-Meier曲线分析TRPM7、BTG2水平与宫颈癌患者预后的关系。结果与癌旁组织比较,肿瘤组织中TRPM7蛋白表达水平升高,BTG2蛋白表达水平降低(P<0.05)。TRPM7、BTG2蛋白表达水平与肿瘤分化程度、淋巴结转移、恶性肿瘤国际临床病理(TNM)分期有关(P<0.05)。与预后良好组比较,预后不良组肿瘤组织中TRPM7蛋白表达水平升高,BTG2蛋白表达水平降低(P<0.05)。TRPM7、TNM分期(Ⅲ期)、肿瘤低分化程度、淋巴结转移是宫颈癌患者预后的危险因素(P<0.05),BTG2是宫颈癌患者预后的保护因素(P<0.05)。TRPM7高表达组3年生存率低于TRPM7低表达组(P<0.05);BTG2高表达组3年生存率高于BTG2低表达组(P<0.05)。结论宫颈癌患者肿瘤组织中TRPM7蛋白表达上调,BTG2蛋白表达下调,均与宫颈癌预后有关。

C2M电商助力制造企业数字化升级的机理及路径

随着信息技术及我国经济社会的迅猛发展,互联网由消费互联网走向工业互联网,C2M电商模式脱颖而出,众多品牌制造企业纷纷结合C2M电商,助力企业的数字化升级。在升级机理上,C2M电商将消费者与生产制造企业实现端到端的直接互联,使得消费端到生产端的供应链数字化升级日新月异,纵向上下游节点数据打通共享,横向同类供应商多家接入,按业务不断延展,形成产业网链。品牌制造企业通过C2M电商,从消费端收集消费者的动态需求,到未来潮流产品预测,再到产品研发的数字化、产品的柔性化生产与产品营销数字化,连通并共享产业链上的大数据,为企业的生产经营数据赋能,创新商业模式,形成产业数字生态圈,不断创造新的价值,实现数字化升级。在升级路径上,依次从产品信息充分数字化、实施C2M电商全渠道数字化营销、产品研发设计的数字化、到采购生产销售物流全流程供应链的数字化升级,最终实现生产经营大数据为企业生产经营数据赋能。