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Scutellarein Ameliorated Chondrocyte Inflammation and Osteoarthritis in Rats

Current Medical Science 2024年第2期44卷 355-368页

作者： Shao-ze JING Shu-han YANG Yun-kun QU hai-hu hao hua WU Department of Orthopedics Third Hospital of Shanxi Medical UniversityShanxi Bethune HospitalShanxi Academy of Medical SciencesTongji Shanxi HospitalTaiyuan 030032China Department of Orthopedics Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Objective:Osteoarthritis(OA)is a degenerative joint disorder characterized by the gradual degradation of joint cartilage and local *** study aimed to investigate the anti-OA effect of scutellarein(SCU),a single-unit flavonoid compound obtained from Scutellaria barbata ***,in ***:The extracted rat chondrocytes were treated with SCU and IL-1β.The chondrocytes were divided into control group,IL-1βgroup,IL-1β+SCU 50µmol/L group,and IL-1β+SCU 100µmol/L *** of rat chondrocytes was observed by toluidine blue and safranin O ***-8 method was used to detect the cytotoxicity of ***,qRT-PCR,Western blotting,immunofluorescence,SAβ-gal staining,flow cytometry,and bioinformatics analysis were applied to evaluate the effect of SCU on rat chondrocytes under IL-1β***,anterior cruciate ligament transection(ACL-T)was used to establish a rat OA *** changes were detected by safranin O/fast green,hematoxylin-eosin(HE)staining,and ***:SCU protected cartilage and exhibited anti-inflammatory effects via multiple ***,it could enhance the synthesis of extracellular matrix in cartilage cells and inhibit its *** addition,SCU partially inhibited the nuclear factor kappa-B/mitogen-activated protein kinase(NF-κB/MAPK)pathway,thereby reducing inflammatory cytokine production in the joint ***,SCU significantly reduced IL-1β-induced apoptosis and senescence in rat chondrocytes,further highlighting its potential role in OA *** vivo experiments revealed that SCU(at a dose of 50 mg/kg)administered for 2 months could significantly delay the progression of cartilage damage,which was reflected in a lower Osteoarthritis Research Society International(OARSI)score,and reduced expression of matrix metalloproteinase 13(MMP13)in ***:SCU is effective in the therapeutic management of OA and could serve as a potential candidate f

关键词： scutellarein osteoarthritis apoptosis mitogen-activated protein kinase(MAPK) nuclear factor kappa-B(NF-κB)

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Valproic acid reduces autophagy and promotes functional recovery after spinal cord injury in rats

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Neuroscience Bulletin 2013年第4期29卷 484-492页

作者： hai-hu hao Li Wang Zhi-Jian Guo Lang Bai Rui-Ping Zhang Wei-Bing Shuang Yi-Jia Jia Jie Wang Xiao-Yu Li Qiang Liu Department of Orthopaedics Dayi Hospital of Shanxi Medical University Department of Physiology Shanxi Medical University Department of Orthopaedics Taiyuan City Centre Hospital Department of Radiology First Hospital of Shanxi Medical University Department of Urology First Hospital of Shanxi Medical University

Secondary damage is a critical determinant of the functional outcome in patients with spinal cord injury （SCI）, and involves multiple mechanisms of which the most important is the loss of nerve cells mediated by multiple factors. Autophagy can result in cell death, and plays a key role in the development of SCI. It has been recognized that valproic acid （VPA） is neuroprotective in certain experimental animal models, however, the levels of autophagic changes in the process of neuroprotection by VPA treatment following SCI are still unknown. In the present study, we determined the extent of autophagy after VPA treatment in a rat model of SCI. We found that both the mRNA and protein levels of Beclin-1 and LC3 were significantly increased at 1, 2, and 6 h after SCI and peaked at 2 h; however, Western blot showed that autophagy was markedly decreased by VPA treatment at 2 h post-injury. Besides, post-SCI treatment with VPA improved the Basso-Beattie-Bresnahan scale, increased the number of ventral horn motoneurons, and reduced myelin sheath damage compared with vehicle-treated animals at 42 days after SCI. Together, our results demonstrated the characteristics of autophagy expression following SCI, and foundthat VPA reduced autophagy and enhanced motor function.

关键词： spinal cord injury autophagy valproicacid: LC3:Beclin-1

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Transforming waste particles into valuable adsorbents via amyloid-mediated molecular engineering

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Science China Chemistry 2025年第01期 317-328页

作者： Qingmin Yang Jian Zhao Yujia Zhang Xingyu Zhou hao Ren Bowen hu Zhongli Lei Lixin Chen Peng Yang School of Material and Chemical Engineering Bengbu University Anhui Provincial Engineering Laboratory of Silicon-Based Materials School of Chemistry and Chemical Engineering Northwestern Polytechnical University Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an Key Laboratory of Polymeric Soft Matter School of Chemistry and Chemical Engineering Shaanxi Normal University International Joint Research Center on Functional Fiber and Soft Smart Textile School of Chemistry and Chemical EngineeringShaanxi Normal University

The high-value utilization of industrial solid waste using a facile and eco-friendly process is of great interest and significance in reducing environmental pollution and developing a green circular economy. Herein, we propose an amyloid-mediated molecular engineering strategy to transform particulate waste into valuable adsorbents for metal ions. Our method has the advantage of aqueous solution fabrication under mild conditions without the use of high-temperature hydrothermal methods and toxic chemical reagents. Amyloid-mediated molecular engineering manipulates the phase transition of bovine serum albumin(BSA)on particulate waste surfaces, resulting in a remarkable ～3.1 times improvement in the adsorption capacity of fly ash, a typical industrial solid waste for gold ions after modification with the phase-transitioned BSA(PTB). The resultant adsorption ability was 69–1,980 times higher than those of conventional and emerging adsorbent materials such as ion exchange resins, activated carbon(AC), covalent organic frameworks(COFs), and metal-organic frameworks(MOFs). We further demonstrated the application of our PTB-modified materials in the recovery of precious metals from low-grade gold ore and electronic waste leachates. Consequently, this strategy could increase the value of waste materials nearly 27 times. In addition, this method is generally extendable to other conventional industrial adsorbents such as resin, clay, and Al2O3, and enhances their adsorption capabilities at least twofold. Overall, this work provides a simple and green approach for improving the adsorption performance of solid particles, and is expected to develop into a universal strategy for transforming waste particles into high-value-added products.

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新型二维声子晶体带隙特性及调控方法研究

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大连理工大学学报 2025年第1期65卷 48-55页

作者：胡启国胡皓魏晨胡豁然重庆交通大学机电与车辆工程学院重庆400074 国网重庆市电力公司信息通信分公司重庆401120

为拓宽声子晶体弹性波带隙,提出一种关于基体双侧对称的声子晶体结构模型.采用有限元法计算了该声子晶体的能带结构和本征模态,基于局域共振机理深入分析了其带隙的形成机理,通过改变几何参数及施加等轴预拉伸应变的方法对该声子晶体的... 详细信息

为拓宽声子晶体弹性波带隙,提出一种关于基体双侧对称的声子晶体结构模型.采用有限元法计算了该声子晶体的能带结构和本征模态,基于局域共振机理深入分析了其带隙的形成机理,通过改变几何参数及施加等轴预拉伸应变的方法对该声子晶体的带隙进行被动调控与主动调控.仿真结果表明:所提声子晶体结构基体中的长波行波与振子的谐振相互耦合作用产生一条局域共振带隙,通过优化几何参数可以获得起始频率更低的宽频带隙,对结构施加等轴预拉伸应变可以有效拓宽带隙且带隙宽度随着预拉伸应变的增大而变宽.研究结果为声子晶体的带隙主动调控提供了方案,为结构减振降噪提供了新思路.

关键词：声子晶体带隙特性带隙调控预拉伸应变

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cid-miR-146a在LCDV-cn感染中的差异表达及其调控作用

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广东海洋大学学报 2022年第4期42卷 31-41页

作者：胡海浩黄鉴涛马嘉霖杨硕闫秀英简纪常广东海洋大学水产学院/广东省水产动物病害防控与健康养殖重点实验室/水产经济动物病害控制广东普通高校重点实验室广东湛江524088

【目的】在鱼淋巴囊肿中国病毒株(LCDV-cn)感染草鱼卵巢细胞系(GCO)过程中,分析cid-miR-146a的表达特性,探索cid-miR-146a的调控作用。【方法】采用颈环RT-PCR方法,从LCDV-cn感染的GCO细胞中获得cidmiR-146a;在LCDV-cn感染GCO过程中,用... 详细信息

【目的】在鱼淋巴囊肿中国病毒株(LCDV-cn)感染草鱼卵巢细胞系(GCO)过程中,分析cid-miR-146a的表达特性,探索cid-miR-146a的调控作用。【方法】采用颈环RT-PCR方法,从LCDV-cn感染的GCO细胞中获得cidmiR-146a;在LCDV-cn感染GCO过程中,用定量PCR方法获取cid-miR-146a的表达变化;用生物信息学方法预测和双荧光素酶系统验证cid-miR-146a的靶基因;转染cid-miR-146a mimic和cid-miR-146a inhibitor对cid-miR-146a进行上调和下调,用定量PCR检测cid-miR-146a、靶基因Flt1和LCDV-cn mcp基因在GCO中的表达。【结果】LCDV-cn感染GCO后3~6 d细胞聚集形成“疤痕”,之后细胞逐渐脱落、裂解,呈现空洞。cid-miR-146a的长度为23 bp,在LCDV-cn感染GCO过程中,cid-miR-146a的表达先上升(72 h前)后下降(72 h后)。用不同生物信息学方法共同预测到cid-miR-146a的靶基因为Flt1,在双荧光素酶系统验证实验中,cid-miR-146a靶向Flt1重组载体后荧光素酶活性降低(P<0.05),证实Flt1为cid-miR-146a的靶基因。对cid-miR-146a进行上调下调后,GCO中cid-miR-146a的表达差异显著(P<0.05)。在cid-miR-146a上调后,靶基因Flt1的表达显著下降(P<0.05),LCDV-cn mcp基因的表达显著上升(P<0.05);在cid-miR-146a下调后,靶基因Flt1的表达显著上升(P<0.05),LCDV-cn mcp基因的表达显著下降(P<0.05)。【结论】在LCDV-cn感染GCO过程中,CPE的变化与cid-miR-146a的表达变化时间点呈正相关。cid-miR-146a负调控其靶基因Flt1的表达,并对LCDV-cn的复制起着正调控作用。生物信息学方法预测说明cid-miR-146a参与调控的信号通路与免疫和肿瘤发生相关。

关键词：鱼淋巴囊肿病毒中国株草鱼卵巢细胞系草鱼miR-146a Fms相关酪氨酸激酶1 定量PCR

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草鱼miR-218鉴定及其对鱼淋巴囊肿病毒中国株感染的调控作用

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广东海洋大学学报 2023年第4期43卷 52-61页

作者：黄鉴涛胡海浩马嘉霖战盈瑾闫秀英简纪常广东海洋大学水产学院/广东省水产动物病害防控与健康养殖重点实验室/水产经济动物病害控制广东普通高校重点实验室广东湛江524088

【目的】鉴定草鱼(Ctenopharyngodon idella)miR-218(cid-miR-218)家族成员,分析cid-miR-218在鱼淋巴囊肿病毒中国株(LCDV-cn)感染草鱼卵巢细胞系(Grass carp ovary cells,GCO)过程中的表达特性,探索cid-miR-218-5p对LCDV-cn感染的调控作用。【方法】从LCDV-cn感染的GCO细胞中,通过茎环RT-PCR获取cid-miR-218家族成员,并进行测序验证和生物信息学分析;用定量PCR分析cid-miR-218家族在LCDV-cn感染GCO过程中的表达;用生物信息学方法预测cid-miR-218家族的靶基因,并利用双荧光素酶报告基因系统验证cid-miR-218-5p的靶基因;通过转染cid-miR-218-5p mimic和cid-miR-218-5p inhibitor上调和下调cid-miR-218-5p的表达,用定量PCR分析cid-miR-218-5p、靶基因il-10和LCDV-cn mcp基因的表达情况;应用GO和KEGG数据库,对cid-miR-218家族可能参与调控的信号通路进行富集分析。【结果】在LCDV-cn感染GCO过程中,鉴定到cid-miR-218-5p、cid-miR-218a、cid-miR-218b、cid-miR-218b-1和cid-miR-218b-2等5个cid-miR-218家族成员,其中cid-miR-218-5p的表达呈先升后降再上升的变化趋势,且差异表达最显著(P<0.05);经生物信息学分析预测,cid-miR-218家族成员有较多共同的潜在靶基因,il-10是共有的靶基因。经验证,pmirGLO-il-10重组质粒与家族成员代表cid-miR-218-5p结合后,其荧光素酶活性降低(P<0.05),证明il-10是cid-miR-218-5p的靶基因。cid-miR-218-5p过表达后,il-10与LCDV-cn mcp表达均显著下降(P<0.05),而抑制cid-miR-218-5p表达后,il-10与LCDV-cn mcp表达则显著上升(P<0.05)。预测表明cid-miR-218家族参与调控病毒感染致瘤相关信号通路。【结论】在LCDV-cn感染GCO过程中,cid-miR-218家族中cid-miR-218-5p起重要调控作用;cid-miR-218-5p负调控其靶基因il-10的表达,并负调控LCDV-cn mcp基因的表达;cid-miR-218-5p和IL-10对鱼淋巴囊肿病诊断和防控有潜在的临床应用价值。

关键词：草鱼卵巢细胞系 cid-miR-218家族鱼淋巴囊肿病毒中国株靶基因白介素10

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Experimental investigation and correlations for proppant distribution in narrow fractures of deep shale gas reservoirs

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Petroleum Science 2022年第2期19卷 619-628页

作者： hao Zeng Yan Jin hai Qu Yun-hu Lu College of Petroleum Engineering China University of Petroleum(Beijing)Beijing102249China College of Petroleum Engineering Chongqing University of Science and TechnologyChongqing401331China

Hydraulic fracturing is a crucial stimulation for the development of deep shale gas reservoirs.A key challenge to the effectiveness of hydraulic fracturing is to place small proppants in complex narrow fractures *** experiments with varied particle and fluid parameters are carried out in a narrow planar channel to understand particle transport and *** four dimensionless parameters,including the Reynold number,Shields number,density ratio,and particle volume fraction,are introduced to describe the particle transport in narrow *** results indicate that the narrow channel probably induces fluid fingers and small particle aggregation in a highly viscous fluid,leading to particle settlement near the *** low viscous fluid is beneficial to disperse particles further into the fracture,especially in the high-speed fluid *** linear and natural logarithmic laws have relationships with dimensionless parameters *** multiple linear regression method developed two correlation models with four dimensionless parameters to predict the bed equilibrium height and covered area of small particles in narrow *** study provides fundamental insight into understanding small size proppant distribution in deep reservoirs.

关键词： Proppant transport Multiphase flow Hydraulic fracturing Deep reservoir Narrow fractures

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草鱼NCCRP-1和IL-10的表达、抗体制备及组织病理变化

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广东海洋大学学报 2021年第5期41卷 10-18页

作者：陈静妮代礼平雷燕胡海浩黄鉴涛简纪常闫秀英广东海洋大学水产学院广东省水产经济动物病原生物学及流行病学重点实验室/水产经济动物病害控制广东普通高校重点实验室广东湛江524088 广州利洋水产科技股份有限公司广东广州510515

【目的】制备草鱼(Ctenopharyngodon idella)非特异性细胞毒性细胞受体蛋白-1(NCCRP-1)和白细胞介素-10(IL-10)的抗血清,探讨重组NCCRP-1和IL-10免疫在草鱼抗病毒感染过程中肾脏和肠病理学变化及对NCCRP-1和IL-10表达的影响。【方法】应... 详细信息

【目的】制备草鱼(Ctenopharyngodon idella)非特异性细胞毒性细胞受体蛋白-1(NCCRP-1)和白细胞介素-10(IL-10)的抗血清,探讨重组NCCRP-1和IL-10免疫在草鱼抗病毒感染过程中肾脏和肠病理学变化及对NCCRP-1和IL-10表达的影响。【方法】应用PCR扩增技术获得草鱼NCCRP-1和IL-10开放阅读框ORF,构建原核表达载体pET-NCCRP和pET-IL10;用表达的重组蛋白分别制备兔抗NCCRP-1和IL-10的抗血清,并采用ELISA方法测定抗血清的效价;分别用重组NCCRP-1和IL-10免疫草鱼,并用草鱼呼肠孤病毒(Grass carp reovirus,GCRV)GD108攻毒,感染7 d后制备草鱼肾脏和肠的病理切片,用定量PCR和western blot检测NCCRP-1和IL-10的表达。【结果】草鱼NCCRP-1和IL-10的ORF分别编码237个和179个氨基酸;草鱼NCCRP-1和IL-10的原核表达载体pET-NCCRP和pET-IL10在大肠杆菌(Escherichia coli)BL21中成功诱导表达,最优表达条件分别是0.1 mmol/L异丙基-β-D-硫代半乳糖苷(IPTG)37℃诱导4 h和1.0 mmol/L IPTG 37℃诱导6 h,western blot分析表明重组表达的蛋白为目的蛋白;制备兔抗NCCRP-1和IL-10抗血清的效价均高达1∶40000,免疫和攻毒后,NCCRP-1免疫组草鱼肾脏与肠的病理变化较轻,且NCCRP-1在肾脏与肠中的表达量显著上调(P<0.05);IL-10免疫组草鱼肾脏与肠的病理变化较重,IL-10在肾脏与肠中的表达量变化不显著。【结论】外源性NCCRP-1免疫后增强了草鱼抵御GCRV-GD108感染的免疫应答,NCCRP-1对草鱼抗GCRV GD108感染效果显著;而外源性IL-10免疫后,其对草鱼抗GCRV GD108感染效果不显著。

关键词：草鱼非特异性细胞毒性细胞受体-1 白细胞介素-10 表达多克隆抗体组织病理学

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Characterization of hot deformation behavior of 30Si2MnCrMoVE low-alloying ultra-high-strength steel by constitutive equations and processing maps

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Journal of Iron and Steel Research International 2020年第7期27卷 807-819页

作者： hai Wang Dong Liu Jian-guo Wang hai-ping Wang Yang hu hao-dong Rao School of Materials Science and Engineering Northwestern Polytechnical UniversityXi’an710072ShaanxiChina State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an710072ShaanxiChina

Isothermal compression tests of as-forged 30Si2MnCrMoVE low-alloying ultra-high-strength steel were carried out on a Gleeble 3500 thermal simulator at the deformation temperatures of 950-1150℃and strain rates of 0.01-10 s^−*** on the classical stress-dislocation density relationship and the kinematics of the dynamic recrystallization,the constitutive equations of the work hardening dynamical recovery period and dynamical recrystallization period were developed by using the work hardening curve and Avrami equation,which shows good agreement with the experimental *** maps at the strain of 0.90 were constructed based on dynamic material model and were analyzed combined with microstructure observation under different *** optimum parameter based on the processing maps was obtained and verified by a supplementary *** power dissipation maps and instability maps at strains of 0.05-0.90 were also constructed,and the evolution law was analyzed in *** established constitutive equation and hot processing maps can provide some guidance for hot working process.

关键词： 30Si2MnCrMoVE ultra-high-strength steel Hot deformation Constitutive model Processing map Power dissipation efficiency

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草鱼呼肠孤病毒GCRV 096 VP7蛋白的表达及免疫原性

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广东海洋大学学报 2020年第4期40卷 1-6页

作者：杨硕陈静妮胡海浩王雅闫秀英简纪常广东海洋大学水产学院//广东省水产经济动物病原生物学及流行病学重点实验室//水产经济动物病害防控广东普通高校重点实验室广东湛江524088

【目的】研究草鱼呼肠孤病毒(grass carp reovirus, GCRV)096 vp7基因的原核和真核表达及其编码蛋白的免疫原性。【方法】应用RT-PCR技术获得GCRV 096 vp7基因,构建GCRV 096 vp7基因原核表达载体pET-VP7,用原核表达的GCRV 096 VP7蛋白... 详细信息

【目的】研究草鱼呼肠孤病毒(grass carp reovirus, GCRV)096 vp7基因的原核和真核表达及其编码蛋白的免疫原性。【方法】应用RT-PCR技术获得GCRV 096 vp7基因,构建GCRV 096 vp7基因原核表达载体pET-VP7,用原核表达的GCRV 096 VP7蛋白免疫草鱼(Ctenopharyngodon idellus)15 d后,用GCRV 096和GCRV GD108分离株对其攻毒,检测GCRV 096 VP7的免疫原性。构建GCRV 096 vp7基因真核表达载体p EGFP-N3-VP7,分析其在草鱼CIK细胞中的表达。【结果与结论】GCRV 096 vp7基因的开放阅读框ORF (GenBank登录号为JN206665)为831 bp,编码276个氨基酸。成功构建GCRV 096 vp7基因原核表达载体pET-VP7,并在大肠杆菌BL21中诱导表达成功;最优表达条件是0.2 mm/L IPTG、28℃下表达5 h,通过HisTrap HP柱纯化融合蛋白,Western blot分析结果表明,所表达的蛋白为目的蛋白。经免疫及GCRV攻毒后,GCRV 096(Ⅰ型)免疫组vp7基因的表达水平降低(P <0.05),而GCRV GD108(Ⅱ型)免疫组vp7基因的表达无显著差异,表明GCRV 096 VP7蛋白对GCRV096具有良好的免疫效果,但对GCRVGD108无明显的免疫效果。成功构建GCRV096vp7基因真核表达载体pEGFP-N3-VP7,Western blot分析结果表明,GCRV 096 VP7蛋白在草鱼肾(CIK)细胞中成功表达。

关键词：草鱼呼肠孤病毒 vp7基因表达免疫原性

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