清肾颗粒对大鼠NRK-52E细胞转分化模型miR-23b和PINK1/Parkin通路的影响

目的 探讨TGF-β1诱导大鼠NRK-52E细胞转分化模型中miR-23b对PINK1/Parkin通路的靶向调节机制,并阐明清肾颗粒含药血清对NRK-52E细胞转分化的干预机理。方法 采用超高效液相色谱(UPLC)指纹图谱法对清肾颗粒进行全指纹图谱分析。构建TGF-β1诱导大鼠NRK-52E细胞转分化模型,转染siRNA后分为模拟物空载对照组、miR-23b-5p模拟物组、抑制剂空载对照组、miR-23b-5p抑制剂组,观察miR-23b-5p对PINK1表达量的影响。再将NRK-52E细胞分组为正常组、TGF-β1组、清肾颗粒组、miR-23b-mimic-NC组、miR-23b-mimic组、miR-23b-mimic+清肾颗粒组,Western blot法检测NRK-52E细胞中Pink1、Parkin、LC3Ⅱ、Beclin-1、P62、α-SMA蛋白表达,RT-qPCR法检测NRK-52E细胞中miR-23b-5p、Pink1、Parkin、Beclin-1、α-SMA mRNA的表达,双荧光素酶报告基因实验检测miR-23b-5p与PINK1的靶向关系。结果 UPLC指纹图谱法鉴定出清肾颗粒中11个活性成分。miR-23b-5p过表达后,PINK1 mRNA表达量也显著增加(P<0.05);而miR-23b-5p表达沉默后,PINK1 mRNA表达量也显著减少(P<0.05)。双荧光素酶报告显示,Rno-miR-23b-5p能显著下调Rno-PINK1-WT荧光素酶活性(P<0.05),但未能下调突变Rno-PINK1-mut荧光素酶活性(P>0.05)。清肾颗粒含药血清干预实验发现,TGF-β1组的miR-23b-5p、Pink1、Parkin、Beclin-1、LC3Ⅱ表达及LC3Ⅱ/Ⅰ比值均明显低于正常组,P62和α-SMA表达明显高于正常组(P<0.05)。清肾颗粒组和miR-23b-mimic组的miR-23b-5p、Pink1、Parkin、Beclin-1、LC3Ⅱ表达及LC3Ⅱ/Ⅰ比值均明显高于TGF-β1组,P62和α-SMA表达明显低于TGF-β1组(P<0.05)。miR-23b-mimic+清肾颗粒组的表现更优于miR-23b-mimic组(P<0.05)。结论 清肾颗粒能够上调NRK-52E细胞内miR-23b-5p表达,并通过增强PINK1/Parkin通路介导的线粒体自噬活性,抑制NRK-52E细胞转分化进程。

Linc01419调控miR-34a-5p/E2F3轴促进膀胱癌细胞增殖与侵袭

目的:探讨长链非编码RNA Linc01419对膀胱癌细胞增殖和侵袭的影响及作用机制。方法:通过UALCAN软件(https://ualcan.path.uab.edu/)分析TCGA数据库中Linc01419在膀胱癌组织与正常膀胱组织中的表达差异;采用实时荧光定量聚合酶链反应(real-time fluorescence quantitative polymerase chain reaction,RT-qPCR)检测Linc01419在不同膀胱癌细胞系、22例经病理证实为膀胱癌的手术患者的肿瘤组织及癌旁正常膀胱组织中的表达水平;应用细胞增殖/毒性检测(cell counting kit-8,CCK-8)实验和Transwell小室侵袭实验检测敲低Linc01419表达对膀胱癌细胞增殖与侵袭的影响;采用双荧光素酶报告基因检测法分析Linc01419与miR-34a-5p及miR-34a-5p与E2F3之间的靶向调控关系。结果:UALCAN数据库分析显示相较正常膀胱组织,Linc01419在膀胱癌组织中显著高表达(P<0.001);RT-qPCR分析结果显示相较癌旁正常膀胱组织,Linc01419在22例膀胱癌组织中表达明显上调(P<0.001),与UALCAN数据库分析结果一致;Linc01419在4株膀胱癌细胞中的表达明显高于正常膀胱上皮细胞(P<0.01);敲低Linc01419表达,可显著抑制膀胱癌细胞的增殖、侵袭及N-cadherin、PCNA蛋白的表达,而显著促进E-cadherin的蛋白表达(P<0.05);miR-34a-5p过表达对膀胱癌细胞具有类似的抑制作用;双荧光素酶报告基因实验、RIP及Pull-down实验证实Linc01419可靶向结合miR-34a-5p,而后者进一步介导了对E2F3的靶向调控;抑制miR-34a-5p表达,可显著削弱Linc01419沉默对膀胱癌细胞生物学行为及E-cadherin、N-cadherin、PCNA、E2F3表达的影响。结论:Linc01419在膀胱癌中异常高表达,其通过调控miR-34a-5p/E2F3轴促进膀胱癌细胞增殖和侵袭,很可能是膀胱癌发生、发展过程中的一个重要环节。

MiRNA-145-5p inhibits gastric cancer progression via the serpin family E member 1-extracellular signal-regulated kinase-1/2 axis

BACKGROUND MicroRNAs(miRNAs)regulate gene expression and play a critical role in cancer physiology.However,there is still a limited understanding of the function and regulatory mechanism of miRNAs in gastric cancer(GC).AIM To investigate the role and molecular mechanism of miRNA-145-5p(miR145-5p)in the progression of GC.METHODS Real-time polymerase chain reaction(RT-PCR)was used to detect miRNA expression in human GC tissues and cells.The ability of cancer cells to migrate and invade was assessed using wound-healing and transwell assays,respectively.Cell proliferation was measured using cell counting kit-8 and colony formation assays,and apoptosis was evaluated using flow cytometry.Expression of the epithelial-mesenchymal transition(EMT)-associated protein was determined by Western blot.Targets of miR-145-5p were predicated using bioinformatics analysis and verified using a dual-luciferase reporter system.Serpin family E member 1(SERPINE1)expression in GC tissues and cells was evaluated using RT-PCR and immunohistochemical staining.The correlation between SERPINE1 expression and overall patient survival was determined using Kaplan-Meier plot analysis.The association between SERPINE1 and GC progression was also tested.A rescue experiment of SERPINE1 overexpression was conducted to verify the relationship between this protein and miR-145-5p.The mechanism by which miR-145-5p influences GC progression was further explored by assessing tumor formation in nude mice.RESULTS GC tissues and cells had reduced miR-145-5p expression and SERPINE1 was identified as a direct target of this miRNA.Overexpression of miR-145-5p was associated with decreased GC cell proliferation,invasion,migration,and EMT,and these effects were reversed by forcing SERPINE1 expression.Kaplan-Meier plot analysis revealed that patients with higher SERPINE1 expression had a shorter survival rate than those with lower SERPINE1 expression.Nude mouse tumorigenesis experiments confirmed that miR-145-5p targets SERPINE1 to regulate extracellular signal-regulated kinase-1/2(ERK1/2).CONCLUSION This study found that miR-145-5p inhibits tumor progression and is expressed in lower amounts in patients with GC.MiR-145-5p was found to affect GC cell proliferation,migration,and invasion by negatively regulating SERPINE1 levels and controlling the ERK1/2 pathway.

Functionalized selenium nanoparticles ameliorated acetaminophen-induced hepatotoxicity through synergistically triggering PKCδ/Nrf2 signaling pathway and inhibiting CYP 2E1

Selenium nanoparticles(SeNPs)have been demonstrated potential for use in diseases associated with oxidative stress.Functionalized SeNPs with lower toxicity and higher biocompatibility could bring better therapeutic activity and clinical application value.Herein,this work was conducted to investigate the protective effect of Pleurotus tuber-regium polysaccharide-protein complex funtionnalized SeNPs(PTR-SeNPs)against acetaminophen(APAP)-induced oxidative injure in HepG2 cells and C57BL/6J mouse liver.Further elucidation of the underlying molecular mechanism,in particular their modulation of Nrf2 signaling pathway was also performed.The results showed that PTR-SeNPs could significantly ameliorate APAP-induced oxidative injury as evidenced by a range of biochemical analysis,histopathological examination and immunoblotting study.PTR-SeNPs could hosphorylate and activate PKCδ,depress Keap1,and increase nuclear accumulation of Nrf2,resulting in upregulation of GCLC,GCLM,HO-1 and NQO-1 expression.Besides,PTR-SeNPs suppressed the biotransformation of APAP to generate intracellular ROS through CYP 2E1 inhibition,restoring the mitochondrial morphology.Furthermore,the protective effect of PTR-SeNPs against APAP induced hepatotoxicity was weakened as Nrf2 was depleted in vivo,indicating the pivotal role of Nrf2 signaling pathway in PTR-SeNPs mediated hepatoprotective efficacy.Being a potential hepatic protectant,PTR-SeNPs could serve as a new source of selenium supplement for health-promoting and biomedical applications.

Exercise-induced modulation of miR-149-5p and MMP9 in LPS-triggered diabetic myoblast ER stress: licorice glycoside E as a potential therapeutic target

Background:This study explores the relationship between endoplasmic reticulum(ER)stress and diabetes,particularly focusing on the impact of physical exercise on ER stress mechanisms and identifying potential therapeutic drugs and targets for diabetes-related sepsis.The research also incorporates traditional physical therapy perspectives,emphasizing the genomic insights gained from exercise therapy in disease management and prevention.Methods:Gene analysis was conducted on the GSE168796 and GSE94717 datasets to identify ER stress-related genes.Gene interactions and immune cell correlations were mapped using GeneCard and STRING databases.A screening of 2,456 compounds from the TCMSP database was performed to identify potential therapeutic agents,with a focus on their docking potential.Techniques such as luciferase reporter gene assay and RNA interference were used to examine the interactions between microRNA-149-5p and MMP9.Results:The study identified 2,006 differentially expressed genes and 616 miRNAs.Key genes like MMP9,TNF-α,and IL1B were linked to an immunosuppressive state.Licorice glycoside E demonstrated high affinity for MMP9,suggesting its potential effectiveness in treating diabetes.The constructed miRNA network highlighted the regulatory roles of MMP9,IL1B,IFNG,and TNF-α.Experimental evidence confirmed the binding of microRNA-149-5p to MMP9,impacting apoptosis in diabetic cells.Conclusion:The findings highlight the regulatory role of microRNA-149-5p in managing MMP9,a crucial gene in diabetes pathophysiology.Licorice glycoside E emerges as a promising treatment option for diabetes,especially targeting MMP9 affected by ER stress.The study also underscores the significance of physical exercise in modulating ER stress pathways in diabetes management,bridging traditional physical therapy and modern scientific understanding.Our study has limitations.It focuses on the microRNA-149-5p-MMP9 network in sepsis,using cell-based methods without animal or clinical trials.Despite strong in vitro findings,in vivo studies are needed to confirm licorice glycoside E’s therapeutic potential and understand the microRNA-149-5p-MMP9 dynamics in real conditions.

HPV E6/E7mRNA检测与P16/Ki-67免疫组化检测对宫颈CIN2级病变的筛查价值探究

目的:研究人乳头瘤病毒(Human papilloma virus,HPV)E6/E7mRNA与免疫组化抑癌基因P16/细胞增殖核抗原Ki-67在宫颈上皮内瘤样病变(Cervical intraepithelial neoplasia,CIN)2级病变筛查中的应用价值。方法:选取2020年2月至2023年2月期间本院收治的92例宫颈炎症及病变患者作为研究对象。根据病理检查结果,将CIN2级患者纳入研究组(n=45),宫颈CIN1级和宫颈炎患者纳入对照组(n=47)。对比两组HPV E6/E7mRNA、P16/Ki-67单独及联合检测阳性表达率差异,采用Logistic回归分析影响CIN2诊断的危险因素,并采用受试者工作曲线分析HPV E6/E7mRNA与P16/Ki-67单独及联合检测在宫颈CIN2级病变筛查的价值。结果:研究组HPV E6/E7mRNA、P16/Ki-67单独检测阳性率、联合检测阳性率(82.22%,77.78%,84.44%)高于对照组(63.83%,48.94%,53.19%)(P<0.05)。Logistic回归分析显示HPV E6/E7mRNA、P16/Ki-67是影响CIN2诊断的危险因素(P<0.05);HPV E6/E7mRNA、P16/Ki-67联合检测CIN2级病变的受试者工作特征曲线下面积为0.688(95%CI:0.579~0.798),优于HPV E6/E7mRNA、P16/Ki-67单独预测[0.592(95%CI:0.476~0.708);0.634(95%CI:0.519~0.748)]。联合检测的准确度、灵敏度、特异度(68.8%,84.4%,53.2%)均高于单独检测HPV E6/E7mRNA(59.2%,82.2%,36.2%)、P16/Ki-67(63.4%,77.8%,48.9%)。结论:HPV E6/E7mRNA与P16/Ki-67免疫组化检测在宫颈CIN2级病变筛查中具有一定的应用价值,可以显著提高筛查宫颈CIN2级病变的诊断效能。

cyclin E、p53、CD44s、CD44v6与早期乳腺癌的相关性及预后预测分析

目的分析肿瘤组织的细胞周期素E(cyclin E)和p53、CD44s、CD44v6蛋白与早期乳腺癌的相关性及预后预测价值。方法选取2018年7月—2020年7月喀什地区第二人民医院收治的80例临床分期为Ⅰ~Ⅱ期的早期乳腺癌患者进行回顾性分析,将其分为恶性组;另选取同期喀什地区第二人民医院收治的80例通过病理学检验确诊为良性乳腺肿瘤患者,将其分为良性组。分别对两组患者留存的肿瘤组织进行免疫组化检测,检测cyclin E、p53、CD44s、CD44v6表达,并对比上述指标的阳性率,应用Spearman相关分析方法分析cyclin E、p53、CD44s、CD44v6与早期乳腺癌的相关性。所有患者均采取手术治疗,随后对80例早期乳腺癌患者进行3年随访,依照随访结果将患者分为2个亚组,即预后不良组(n=25)和预后良好组(n=55),对比两组患者一般临床特征及cyclin E、p53、CD44s、CD44v6阳性率,并应用Logistic回归分析cyclin E、p53、CD44s、CD44v6对早期乳腺癌预后的预测价值。结果恶性组患者cyclin E、p53、CD44s、CD44v6阳性率分别为42.50%、61.25%、77.50%、81.25%,明显高于良性组1.25%、5.00%、10.00%、12.50%(P<0.05);Spearman相关分析结果显示:cyclin E、p53、CD44s、CD44v6与早期乳腺癌呈正相关(P<0.05);预后良好组与预后不良组患者绝经情况、年龄、病理类型、治疗方式、三阴性乳腺癌、肿瘤大小、组织分化程度对比,差异无统计学意义(P>0.05),预后良好组与预后不良组患者临床分期、cyclin E、p53、CD44s、CD44v6阳性例数对比,差异有统计学意义(P<0.05);Logistic回归分析结果表明:cyclin E、p53、CD44s、CD44v6阳性表达为影响早期乳腺癌预后的独立影响因素(P<0.05)。结论cyclin E、p53、CD44s、CD44v6表达水平与乳腺癌的发生、发展具有明显关系,且上述指标呈阳性表达为早期乳腺癌预后不良的独立预测因素。

Introduction of Internet P.E News Reporter

Consistent with previous research, results showed men get more paragraphs and photography coverage. Interestingly, women's factual information is always associated with relevant men report, including P.E relevant with personal information.

P.E Science J ournals General Influence Factor

The portal is characterized with large amount of information, high stability and interaction, while "Online Journal of Physical P.E" is to publicize the academic pure value, spread the achievement influence in daily life, and advocate an academic atmosphere of utilitarianism with a slogan of "article issued online can be published in journal with the recommendation of experts" and practical action. It is the first academic journal under network operation.

Research and Practice of the P.E. Information Teaching Design System

In this paper, the physical education information teaching design system is researched and developed based on VB6.0 optimization platform. According to the national physical education and health course standards and the fundamental theories of the constructivisrn, the author adopts the modular-design development method to design two functional areas which are the displaying of the teaching design contents and the online information database （nine modules in total） on the basis of the P.E. teaching design flow. Importantly, this system features the compatibility, scalability and practical applicability, and can effectively improve the ability of P.E. teachers to design their teaching, and hence provides a guarantee for the improvement of teaching quality and efficiency.

Analysis on the Optimization of the P.E. Course Teaching Plan in Colleges and Universities

In the new period, the physical education in colleges and universities is of greater and greater significance for the enhancement of students＇ learning efficiency. In this paper, the current situation of the current physical education is analyzed, and also related suggestions on the optimization of the P.E. course teaching plan are proposed.

The Geological Study of the Role of Citizens’ Participation in Improvement of Municipal Services and Environment (Case Study: Urban Area of Bagh-e Malek in Khuzestan Province of Iran)

The main purpose of the present research is to study geological issues of urban areas in Bagh-e Malek in Khuzestan province of Iran and improving the municipal environment. The present research is an applied study in sake of nature and a descriptive-analytical survey in sake of method. Library and field method has been used in data collection. In field study, 325 citizens in Bagh-e Malek in 2015 were selected as sample group via sampling method well suited to sample size using questionnaire of citizens’ participation. Software SPSS and Excel are used to analyze data. Friedman test has been used to determine rank of each of selected indices for testing hypotheses and finding research. Results from Friedman test indicate that satisfaction with pedestrian passages has the highest mean with rank (9.90) and awareness from municipality’s rights has the lowest mean with rank (2.95).

Study on the Anti-Inflammatory and Analgesic Mechanisms of Breast Lump Resolution Detergent in a Rat Model of Breast Hyperplasia

Objective: This study aimed to investigate the anti-inflammatory and analgesic mechanisms of a breast lump resolution detergent in a rat model of breast hyperplasia. Methods: A rat model of breast hyperplasia was established using injections of estradiol benzoate combined with progesterone. The effects of the breast lump resolution detergent on nipple height and diameter in the rat model were observed, along with its impact on serum levels of estradiol (E2), prolactin (PRL), and progesterone (P). Additionally, the study examined the morphological changes in breast tissue. The impact of the breast nodule detergent on blood rheology parameters was also observed. Furthermore, the anti-inflammatory effect of the breast nodule detergent was assessed using the cotton ball granuloma experiment, and the analgesic effect was observed using the writhing test. Results: The breast lump resolution detergent reduced nipple height and diameter in the rat model, decreased serum levels of E2, PRL, and P, and alleviated pathological changes in breast tissue. It also lowered hemorheological parameters including whole blood high, medium, and low shear viscosity, plasma viscosity, red blood cell hematocrit, red blood cell aggregation index, red blood cell deformability index, red blood cell electrophoresis time, and erythrocyte sedimentation rate in the acute “blood stasis” rat model. The detergent reduced the weight of cotton ball granulomas in mice and decreased the number of writhing episodes caused by acetic acid. Conclusion: The breast lump resolution detergent demonstrates favorable therapeutic effects in treating breast hyperplasia, promoting blood circulation and removing blood stasis, exerting anti-inflammatory properties, and providing analgesic effects. The downregulation of serum E2 and PRL levels and the upregulation of P levels may be critical mechanisms underlying its efficacy.

S-FHMC710型煤泥重介质旋流器在吕家坨选煤厂的应用

吕家坨矿选煤厂为了解决粗煤泥分选效果差的问题,采用S-FHMC710型超级煤泥重介质旋流器分选粗煤泥,并通过工业性试验对超级煤泥重介质旋流器进行工艺性能进行检测。试验结果表明:大于0.5 mm粒级可能偏差0.050 kg/L,数量效率99.64%;0.50~0.25 mm粒级可能偏差0.060 kg/L,数量效率98.76%;0.25~0.10 mm粒级可能偏差0.087 kg/L,数量效率96.99%,有效分选下限达到0.10 mm。该超级煤泥重介质旋流器应用效果良好,对于提高精煤质量、产率和选煤厂经济效益具有显著的效果。

修正磁化模型的多组分铁磁性颗粒运动研究

铁磁性颗粒因具有铁磁性被广泛应用于化工环保、生化工程和能源等各个领域,磁场具有的穿透性质,对于采用铁磁性颗粒的系统,可通过改变磁场控制系统内颗粒的运动状态.文章基于传统的磁化模型,采用相对参考系转换方法,提出了适用范围更广的修正P-E磁化模型,可以计算铁磁性颗粒在任意方向磁场作用下所受磁化力.通过有限体积法(FVM)与离散单元法(DEM)耦合进行数值模拟,验证了修正P-E磁化模型的精确性,并模拟多组分颗粒在磁场中的运动,对比了铁磁性颗粒与惰性颗粒在不同配比及不同磁场条件下的运动特性,对颗粒分布、颗粒速度矢量和颗粒总能量变化3个方面进行分析.结果表明:在多组分颗粒系统中,铁磁性颗粒依旧保持成链特性,但成链速度与长度降低;随着铁磁性颗粒占比提高,铁磁性颗粒初始能量增大,聚链数量与成链长度将有所增加,约束惰性颗粒能力增强;此外,施加水平与竖直方向磁场时,多组分颗粒系统达到稳定速度最快,可以通过增大铁磁性颗粒占比有效提升稳定速度,使系统更快趋于稳定;而施加含有倾角的磁场时,随着铁磁性颗粒占比升高,铁磁性颗粒达到稳定状态需要的时间逐渐降低,较难通过改变铁磁性颗粒占比缩短稳定所需时间.

p16/Ki-67双染检测、HPVE6/E7mRNA检测在宫颈病变诊断中的价值研究

目的:探讨p16/Ki-67双染检测、HPVE6/E7mRNA检测在宫颈病变诊断中的价值。方法:选择2021年4月至2023年2月我院收治的605例高危型HPV阳性患者为研究对象,所有患者入院后均进行阴道镜检查与病理活检,取患者细胞学样本分别进行p16/Ki-67双染检测、HPVE6/E7mRNA检测。比较两种方法单独检查与联合检测对宫颈病变阳性检出率的差异;比较三种检查方法对宫颈病变诊断效能的差异。结果:联合检测检出CIN1~3阳性率均高于p16/Ki-67双标记、HPVE6/E7mRNA检测(P<0.05);三种检测方式的浸润癌阳性检出率比较无明显差异(P>0.05)。Kappa检验分析结果显示,p16/Ki-67双标记与HPVE6/E7mRNA检查结果与病理诊断结果具有较好的一致性(Kappa值=0.719,P<0.05);联合检测结果与病理诊断结果具有高度的一致性(Kappa值=0.894,P<0.05)。联合检测对宫颈病变的诊断灵敏度、特异性与准确率高于p16/Ki-67双标记与HPVE6/E7mRNA检查(P<0.05)。结论:p16Ki-67双染与HPVE6/E7mRNA联合检测可准确检出宫颈病变程度,对宫颈病变疾病类型的鉴别可提供充足可靠的数据支持,联合检查的诊断效能较好,对患者后续相关治疗开展有积极指导意义。

miR-150-5p靶向ZEB1调控EMT对子宫内膜癌细胞恶性生物学行为的影响

目的探讨微小RNA-150-5p(miR-150-5p)是否可靶向锌指E盒结合蛋白1(ZEB1)调控子宫内膜癌(EC)细胞上皮间质转化(EMT)进而影响癌细胞的恶性生物学行为。方法RT-qPCR技术检测正常子宫内膜和EC组织中、子宫内膜上皮细胞系hEEC及EC细胞系Ishikawa和HEC-1-A中miR-150-5p相对表达量。过表达miR-150-5p,MTT法、菌落形成实验、伤口愈合实验和Transwell实验分别评估Ishikawa细胞活力、克隆形成、迁移及侵袭能力;双荧光素酶报告基因实验验证miR-150-5p与ZEB1的靶向关系;RT-qPCR检测miR-150-5p及ZEB1 mRNA相对表达量;Western blot技术检测ZEB1、E-钙黏蛋白(E-cadherin)、N-钙黏蛋白(N-cadherin)、波形蛋白(Vimentin)及基质金属蛋白酶9(MMP-9)蛋白表达量。结果与正常子宫内膜组织比较,EC组织中miR-150-5p相对表达量降低(P<0.05);与hEEC细胞比较,HEC-1-A细胞和Ishikawa细胞中miR-150-5p相对表达量降低(P<0.05),Ishikawa细胞中最低(P<0.05)。与空白组比较,miR-150-5p mimics组细胞490 nm处吸光度值、细胞菌落数、迁移数和侵袭数、ZEB1 mRNA和蛋白相对表达量及N-cadherin、Vimentin和MMP-9蛋白相对表达量显著降低,miR-150-5p相对表达量、E-cadherin蛋白相对表达量显著升高(P<0.05)。经生物信息学分析,ZEB1被预测为miR-150-5p的潜在靶基因。结论miR-150-5p可靶向ZEB1抑制癌细胞的恶性生物学行为,其作用机制可能与调控EC细胞EMT进展有关。

微创经皮钢板内固定技术在锁骨中段粉碎性骨折锁定钢板固定术中应用

目的 探讨微创经皮钢板内固定(MIPPO)技术在锁骨中段粉碎性骨折锁定钢板固定术中的应用价值。方法 回顾性选取2020年6月—2022年6月130例锁骨中段粉碎性骨折的临床资料,根据手术方法分为观察组和对照组,每组65例。对照组行传统切开复位内固定,观察组行MIPPO技术联合锁定钢板治疗。比较2组围术期指标、并发症、手术优良率及手术前后疼痛应激介质、肩关节功能指标。结果 观察组切口长度、骨折愈合时间短于对照组,术中出血量少于对照组,术后1 d疼痛视觉模拟评分法评分低于对照组(P<0.01)。术后1 d,观察组血清P物质、前列腺素E_(2)低于对照组,β内啡肽高于对照组(P<0.05);术后3、6个月,观察组Constant-Murley肩关节功能评分及肩关节前屈、后伸、外旋活动度高于对照组(P<0.05)。观察组并发症总发生率低于对照组,术后6个月手术优良率高于对照组(P<0.05)。结论 MIPPO技术联合锁定钢板治疗锁骨中段粉碎性骨折能显著提高手术优良率,减少术中出血量,促进肩关节功能恢复,抑制疼痛因子释放,缓解术后早期疼痛,还能降低并发症风险。

股票市盈率波动有偏性对投资者股票交易量的影响研究--基于沪深300指数

有着独特波动规律的股票市盈率,会对投资者的股票交易产生影响。从市盈率波动有偏性的角度出发,以沪深300指数的市盈率数据为研究样本,构建回归模型,实证检验市盈率波动有偏性对股票交易量的影响,结果表明:沪深300指数市盈率波动相对于正常波动水平存在明显右偏性;沪深300指数市盈率波动的持续时间较长且具有非对称性;沪深300指数市盈率波动右偏性对股票成交量具有显著的反向影响,并且这种影响受到经济增长、出口量、利率、汇率、居民消费价格指数和货币供应量的非对称约束。要稳定股市交易量,就需要综合考虑上述因素的影响,并根据市场变动灵活调整政策措施。

血清sP-selectin、sE-selectin水平与糖尿病肾病的相关性研究

目的探讨血清可溶性P选择素(sP-selectin)、可溶性E选择素(sE-selectin)在糖尿病肾病(DN)时期的水平变化及意义。方法 61例体检健康者(健康对照组)、62例2型糖尿病(T2DM组)患者及59例糖尿病肾病(DN组)患者,用酶联免疫吸附法(ELISA)测定各组血清sP-selectin、sE-selectin水平,同时测定各组空腹血压(BP)、血糖(FPG)、空腹胰岛素(FINS)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDLC)、胆固醇(CHO)、三酰甘油(TG)、尿酸(UA)、尿素氮(BUN)、肌酐(Cr)、胱抑素(CysC)水平。结果 T2DM组及DN组患者血清sP-selectin、sE-selectin水平高于健康对照组,差异有统计学意义(P<0.05);DN组sP-selectin高于T2DM组(P<0.01);血清sP-selectin、sE-selectin与HOMA-IR、FPG、FINS、UA、BUN、Cr、CysC成明显正相关(P<0.05)。结论 sP-selectin、sE-selectin与HOMA-IR高度相关,提示sP-selectin、sE-selectin可能通过胰岛素抵抗促进T2DM的发生。sP-selectin、sE-selectin是DN发生的危险因素。