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苓桂术甘汤调控Wnt/β-catenin通路抑制心肌成纤维细胞纤维化

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中国中药杂志 2024年第15期49卷 4178-4187页

作者：丁芮李向阳王翔王靓周鹏黄金玲安徽中医药大学安徽合肥230012

该研究旨在通过观察苓桂术甘汤(linggui Zhugan Decoction,LGZGD)含药血清对心肌成纤维细胞(cardiac fibroblasts,CFs)纤维化及Wnt/β-连环蛋白(β-catenin)信号通路蛋白分子表达的调控机制。制备空白血清和LGZGD含药血清,胰酶-胶原酶... 详细信息

该研究旨在通过观察苓桂术甘汤(linggui Zhugan Decoction,LGZGD)含药血清对心肌成纤维细胞(cardiac fibroblasts,CFs)纤维化及Wnt/β-连环蛋白(β-catenin)信号通路蛋白分子表达的调控机制。制备空白血清和LGZGD含药血清,胰酶-胶原酶依次消化并结合差速贴壁法分离培养原代CFs,采用免疫荧光标记鉴定原代CFs。设正常对照组,模型组,20%空白血清组,5%、10%、20%LGZGD含药血清组。分别用20%空白血清,5%、10%、20%LGZGD含药血清预处理12 h,除正常对照组,其余5组均加入过氧化氢(hydrogen peroxide,H_(2)O_(2))刺激细胞,建立原代CFs纤维化模型。采用划痕愈合实验观察细胞迁移能力,ELISA法检测Ⅰ型胶原(collagenⅠ,ColⅠ)、Ⅲ型胶原(collagenⅢ,ColⅢ)含量,Western blot法检测α-平滑肌肌动蛋白(α-smooth muscle actin,α-SMA)、Wnt1、糖原合酶激酶3β(glycogen synthase kinase 3 beta,GSK-3β)、磷酸化糖原合酶激酶3β(phospho synthase kinase 3 beta,p-GSK-3β)、β-catenin及细胞核β-catenin的蛋白表达,RT-qPCR检测β-catenin、基质金属蛋白酶9(matrix metalloprotein 9,MMP9)的基因表达,免疫荧光技术检测关键蛋白α-SMA、β-catenin的表达及定位。制备Wnt1过表达CFs,采用H_(2)O_(2)处理CFs。设正常对照组、模型组、20%LGZGD含药血清组、空载质粒+20%LGZGD含药血清组、Wnt1过表达+20%LGZGD含药血清组。采用ELISA法检测ColⅠ、ColⅢ的含量与其比值,Western blot法检测α-SMA和Wnt1、GSK-3β、p-GSK-3β、β-catenin及细胞核β-catenin的蛋白表达,RT-qPCR检测β-catenin、MMP9的基因表达。免疫荧光染色显示,心肌成纤维细胞Vimentin表达阳性,呈绿色,胞核为蓝色,纯度大于90%,鉴定是原代CFs。结果显示,与正常对照组相比,模型组CFs愈合率增强,ColⅠ、ColⅢ含量升高,ColⅠ/ColⅢ比值增大,α-SMA、Wnt1、p-GSK-3β、β-catenin、核β-catenin蛋白表达上调,GSK-3β蛋白表达降低,β-catenin、MMP9 mRNA表达显著升高,β-catenin、α-SMA荧光强度明显增强,表达量明显增多;与模型组相比,5%、10%、20%LGZGD含药血清能显著抑制细胞迁移能力,减少ColⅠ、ColⅢ的含量,降低ColⅠ/ColⅢ比值,下调α-SMA、Wnt1、p-GSK-3β、β-catenin、核β-catenin蛋白表达,提高GSK-3β表达,减少β-catenin、MMP9的mRNA表达,降低β-catenin、α-SMA荧光强度和表达量;与空载质粒+20%LGZGD含药血清组比,过表达Wnt1后,LGZGD作用被显著逆转。LGZGD能够减少胶原纤维过度沉积,抑制成纤维细胞过度增生,改善心肌纤维化进程。LGZGD改善心肌纤维化的作用与调控Wnt/β-catenin通路,减少胶原沉积,保护心肌细胞有关。

关键词：苓桂术甘汤慢性心力衰竭心肌纤维化心肌成纤维细胞 Wnt/β-连环蛋白信号通路

苓桂术甘汤对心肌梗死后小鼠心肌纤维化及Lats1/Yap信号通路的影响

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中国中药杂志 2024年第17期49卷 4702-4710页

作者：徐少华王舒舒任涵赵婉竹周鹏王靓黄金玲安徽中医药大学中医学院安徽合肥230012 安徽中医药大学中西医结合学院安徽合肥230012 中药复方安徽省重点实验室安徽合肥230012

观察苓桂术甘汤对心肌梗死(MI)后小鼠心肌纤维化(MF)及心肌组织大肿瘤抑制激酶1(Lats1)/Yes相关蛋白(Yap)信号通路的影响,探讨其抑制MF的作用和机制。采用冠状动脉左前降支结扎法构建MI后小鼠缺血模型,造模24 h后,连续干预6周。采用小... 详细信息

观察苓桂术甘汤对心肌梗死(MI)后小鼠心肌纤维化(MF)及心肌组织大肿瘤抑制激酶1(Lats1)/Yes相关蛋白(Yap)信号通路的影响,探讨其抑制MF的作用和机制。采用冠状动脉左前降支结扎法构建MI后小鼠缺血模型,造模24 h后,连续干预6周。采用小动物超声成像系统检测小鼠左室射血分数(LVEF)、左室短轴缩短率(LVFS)、左室收缩末期内径(LVIDs)、左室舒张末期内径(LVIDd);采用HE及Masson染色观察小鼠心肌组织病理学变化;采用ELISA法检测小鼠血清肌酸激酶同工酶MB(CK-MB)、乳酸脱氢酶(LDH)水平;采用RT-qPCR法检测小鼠心肌组织Lats1、Yap、结缔组织生长因子(CTGF)mRNA水平;采用Western blot法检测小鼠心肌组织α-平滑肌肌动蛋白(α-SMA)、胶原蛋白Ⅰ(ColⅠ)、胶原蛋白Ⅲ(ColⅢ)、基质金属蛋白酶抑制剂1(TIMP1)、基质金属蛋白酶2(MMP2)、Lats1、Yap、磷酸化Yap(phosphorylation-Yap,p-Yap)、细胞核Yap(n-Yap)蛋白表达。与假手术组比较,模型组小鼠LVEF、LVFS水平显著降低,LVIDd、LVIDs水平显著升高(P<0.01);心肌细胞排列紊乱,心肌纤维部分断裂及胶原纤维大量沉积;小鼠血清CK-MB、LDH水平显著升高(P<0.01);心肌组织Lats1 mRNA水平显著降低(P<0.01),Yap、CTGF mRNA水平显著升高(P<0.01);心肌组织α-SMA、ColⅠ、ColⅢ、MMP2、Yap、n-Yap蛋白表达显著升高(P<0.01),Lats1、TIMP1、p-Yap蛋白表达及p-Yap/Yap比值显著降低(P<0.01)。与模型组比较,经高剂量苓桂术甘汤干预后,小鼠LVEF、LVFS水平显著升高,LVIDd、LVIDs水平显著降低(P<0.01);心肌细胞排列较整齐,心肌纤维断裂及胶原纤维沉积明显减少;小鼠血清CK-MB、LDH水平显著降低(P<0.01);心肌组织Lats1 mRNA水平显著升高(P<0.01),Yap、CTGF mRNA水平显著降低(P<0.01);心肌组织α-SMA、ColⅠ、ColⅢ、MMP2、Yap、n-Yap蛋白表达显著降低(P<0.01),Lats1、TIMP1、p-Yap蛋白表达及p-Yap/Yap比值显著升高(P<0.01)。苓桂术甘汤能够抑制MI后模型小鼠MF,改善小鼠心功能,此作用与其激活Lats1/Yap信号通路密切相关。

关键词：苓桂术甘汤心肌梗死心肌纤维化 Lats1/Yap信号通路

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不同性型蓖麻花粉的生活力及形态特征研究

中国油料作物学报 2024年第5期46卷 1040-1047页

作者：杨俊芳王宏伟王宙赵宜婷王亚张宏斌张晋龙黄晋玲曹越山西农业大学农学院山西太原030031 山西农业大学经济作物研究所山西太原030031 山西农业大学财务资产部山西太原030031

研究不同性型蓖麻(Ricinus communis L.)花粉的育性,尤其是雌性系的花粉育性,对于蓖麻杂交育种工作意义重大。本研究首先利用TTC染色法和花粉萌发法分别检测了镶嵌型雌性系、两性系共6种蓖麻种质材料花粉的生活力,随后通过扫描电子显微... 详细信息

研究不同性型蓖麻(Ricinus communis L.)花粉的育性,尤其是雌性系的花粉育性,对于蓖麻杂交育种工作意义重大。本研究首先利用TTC染色法和花粉萌发法分别检测了镶嵌型雌性系、两性系共6种蓖麻种质材料花粉的生活力,随后通过扫描电子显微镜观察了他们的花粉形态,并利用SPSS软件分析了其形态特征值。结果显示:TTC染色和花粉萌发结果基本一致,不同材料间花粉生活力差异显著,蓖麻镶嵌型雌性系HCH3花粉生活力最大(96.97%)、镶嵌型雌性系HCH1花粉生活力次之。两种性型的花粉均呈现为单粒,长球形,赤道面观为长球形,极面观为三裂近圆形,中等大小(花粉极轴长为30.17~42.07μm),属于N_(3)P_(4)C_(3)型花粉。花粉外壁为网状纹饰,脊顶部具有密集的瘤状突起。然而,不同材料间花粉的极轴长、网眼直径、网脊宽度、单位面积网眼数形态值上差异显著。主成分析和聚类分析将6份蓖麻材料按花粉大小分为两类。本研究为蓖麻的花粉可育性和杂交选育提供了新的数据支撑。

关键词：雌性系花粉生活力扫描电子显微镜形态特征

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Novel milestones for early esophageal carcinoma:From bench to bed

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1104-1118页

作者： Ji-Han Qi Shi-ling huang Shi-Zhu jin Department of Gastroenterology and Hepatology The Second Affiliated Hospital of Harbin Medical UniversityHarbin 150086Heilongjiang ProvinceChina

Esophageal cancer(EC)is the seventh most common cancer worldwide,and esophageal squamous cell carcinoma(ESCC)accounts for the majority of cases of *** effectively diagnose and treat ESCC and improve patient prognosis,timely diagnosis in the initial phase of the illness is *** article offers a detailed summary of the latest advancements and emerging technologies in the timely identification of *** biology and epigenetics approaches involve the use of molecular mechanisms combined with fluorescence quanti-tative polymerase chain reaction(qPCR),high-throughput sequencing technology(next-generation sequencing),and digital PCR technology to study endogenous or exogenous biomolecular changes in the human body and provide a decision-making basis for the diagnosis,treatment,and prognosis of *** invest-igation of the microbiome is a swiftly progressing area in human cancer research,and microorganisms with complex functions are potential components of the tumor *** intratumoral microbiota was also found to be connected to tumor *** application of endoscopy as a crucial technique for the early identification of ESCC has been essential,and with ongoing advancements in technology,endoscopy has continuously *** the advancement of artificial intelligence(AI)technology,the utilization of AI in the detection of gastrointestinal tumors has become increasingly *** implementation of AI can effectively resolve the discrepancies among observers,improve the detection rate,assist in predicting the depth of invasion and differentiation status,guide the pericancerous margins,and aid in a more accurate diagnosis of ESCC.

关键词： Early esophageal squamous cell carcinoma Epidemiology and risk factors Molecular biology Epigenetic Microbiology Endoscopy and artificial intelligence

Studies on reactivities of molybdenum clusters——The additive reaction of SbCl3 to trimolybdenum clusters with loose coordination sites and the crystal structure of the reaction product

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Chinese Journal of Chemistry 1987年第3期5卷 199-209页

作者： LU Shao-Fang* huang Jian-Quan LIN Yu-Hui huang jin-ling, Fujian Institute of Research on the Structure of Matter, Academia Sinica, Fuzhou Fujian Institute of Research on the Structure of Matter Academia Sinica Fuzhou

The additive reaction of SbCl3to trimolybdenum clusters with loose coordination sites,Mo3（μ3-S）(μ-S)3[S2P （OEt）2]4·L′（1L′=H2O; 2, L′=C3H3ON）, in a C2H5OH-HCl medium yieldscomplexes {Mo3（μs-S） [（μ-S）3·SbCl3] [S2P （OEt）2]4·（C2H6OH）}（C2H5OH）（3） and {Mo3（μ3-S） [（μ-S）3·SbCl3] [S2P （OEt）2]3[SXP （OEt）2] · （C3H3ON）} （X=S,O）（4）, respectively. The crystal and mo-lecular structures of these two compounds have been determined by single crystal X-ray crystallography:crystal 3 belongs to the monoclinic system, P21,/n, while crystal 4 belongs to the trielinic system, P1,The intensity data were collected on an Enraf-Nonius CAD-4 diffractometer with graphite-monochro-matized MoKα radiation by using the ω-2θ technique. The structures were solved by the Pattersonmethod as well as direct methods and refined by full matrix least-squares method. Final R values were0.078 for crystal 3 and 0.068 for crystal 4, respectively. The result of the structure determination showedthat the two molecular structures are practically formed by connecting a trimolybdenum clusterswith loose coordination sites,{Mo3（μs-S）（μ-S）3[S2P（OEt）2]4·L （L=C2H5OH, C3H3ON）, with a SbCI3molecule through three （μ-S）atoms to form the {Mo3SbS4} core of a cubane-like type. There arerelatively weak coordination bonds between the Sb and the three （μ-S） atoms, while no bonding in-teraction between the Sb and the three Mo atoms is found. In the additive compounds the structuralcharacter of the trimolybdenum clusters with loose coordination sites has significantly been *** addition, 3 still has the reactivity for the loosely coordinated EtOH to be replaced by an oxazole ringto form crystal 4. However, the three （μ-S） atoms may be regarded as triple bridging S atoms eachconnecting two Mo atoms and a Sb atom. The information obtained serves as an evidence that thetetranuclear clusters might be formed by a [3+1] reaction mode.

关键词： Sb In Studies on reactivities of molybdenum clusters The additive reaction of SbCl3 to trimolybdenum clusters with loose coordination sites and the crystal structure of the reaction product

Surface quality investigation in high-speed dry milling of Ti-6Al-4V by using 2D ultrasonic-vibration-assisted milling platform

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Advances in Manufacturing 2024年第2期12卷 349-364页

作者： jin Zhang Li ling Qian-Yue Wang Xue-Feng huang Xin-Zhen Kang Gui-Bao Tao Hua-Jun Cao College of Mechanical and Vehicle Engineering Chongqing UniversityChongqing400044People’s Republic of China State Key Laboratory of Mechanical Transmissions Chongqing UniversityChongqing400044People’s Republic of China Aerospace Research Institute of Materials and Processing Technology Beijing100076People’s Republic of China

Ultrasonic-vibration-assisted milling(UVAM)is an advanced method for the efficient and precise machining of difficult-to-machine materials in modern ***,the milling efficiency is limited because the ultrasonic vibration toolholder ER16 collet has a critical cutting ***,a 2D UVAM platform is built to ensure precision machining efficiency and improve the surface quality without changing the milling *** evaluate this 2D UVAM platform,ultrasonic-vibration-assisted high-speed dry milling(UVAHSDM)is performed to process a titanium alloy(Ti-6Al-4V)on the platform,and the milling temperature,surface roughness,and residual stresses are selected as the important indicators for performance *** results show that the intermittent cutting mechanism of UVAHSDM combined with the specific spindle speed,feed speed,and vibration amplitude can reduce the milling temperature and improve the texture of the machined *** with conventional milling,UVAHSDM reduces surface roughness and peak-groove surface profile values and extends the range of residual surface compressive stresses from−413.96 MPa to−600.18 *** excellent processing performance demonstrates the feasibility and validity of applying this 2D UVAM platform for investigating surface quality achieved under UVAHSDM.

关键词： 2D ultrasonic-vibration-assisted milling(UVAM)platform Ultrasonic-vibration-assisted high-speed dry milling(UVAHSDM) Milling temperature Surface roughness Residual stress

linggui Zhugan Decoction(苓桂术甘汤)Inhibits Ventricular Remodeling after Acute Myocardial Infarction in Mice by Suppressing TGF-β1 Smad Signaling Pathway

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Chinese Journal of Integrative Medicine 2020年第5期26卷 345-352页

作者： WANG Liang SHI Hui huang jin-ling XU Shan LIU Pei-pei College of Integrated Chinese and Western Medicine Anhui University of Chinese MedicineHefei(230012)China Anhui Province Key Laboratory of Chinese Medicinal Formula Hefei(230012)China Graduate School Anhui University of Chinese MedicineHefei(230012)China

Objective:To investigate the inhibitory effect of linggui Zhugan Decoction(LZD,苓桂术甘汤)on the ventricular remodeling(VR)after acute myocardial infarction(AMI)and related mRNA and proteins expression in transforming growth factor-beta 1(TGF-β1)/Smad signaling pathway,and explain its putative ***:A VR model was generated by ligation of coronary artery in *** weeks after surgery,60 mice were randomly divided into the model group,the sham-operation group(distilled water),the positive control group(2.4 mg/kg simvastatin),and the low-,medium-and high-dose LZD groups(2.1,4.2,8.4 g crude drug/kg,respectively)by a random number table,10 mice in each *** in each group was treated for 4 *** of hemodynamics indices and cardiac weight index were detected by the PowerLab data acquisition and analysis recording *** changes of myocardial tissue were observed by hematoxylin-eosin and Masson *** expressions of TGF-β1,Smad2,Smad3,p-Smad2 and p-Smad3 in myocardial tissue were detected by Western *** mRNA expressions of TGF-β1,Smad2 and Smad3 were detected by reverse transcription-quantitative polymerase chain reaction(RT-qPCR).The expressions of matrix metalloprotein 2(MMP2),MMP9,collagenⅠand collagen Ⅲ were observed by immunohistochemical ***:VR mice showed significant dysfunction in hemodynamic indices and cardiac structure and *** with the shamoperation group,myocardial tissue damage,interstitial fibrosis occurred in the model mice,left ventricular systolic pressure(LVSP),left ventricular pressure maximum contraction rate(+dp/dtmax)and left ventricular pressure maximum relaxation rate(-dp/dtmax)decreased significantly(all P<0.01),while left ventricular end-diastolic pressure(LVEDP),cardiac weight index and left ventricular weight index elevated significantly,meanwhile TGF-β1,p-Smad2,p-Smad3,Smad2,Smad3,MMP2,MMP9,collagen Ⅰ,collagen Ⅲ protein expressions in myocardial tissue and TGF-β1 Sma

关键词： linggui Zhugan Decoction acute myocardial infarction ventricular remodeling transtorming growth factor-beta 1/Smad signaling pathway Chinese medicine

Quantum phase transition of the Jaynes-Cummings model

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 1-9页

作者： Cheng Liu jin-Feng huang Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan ProvinceDepartment of Physics and Synergetic Innovation Center for Quantum Effects and ApplicationsInstitute of Interdisciplinary StudiesHunan Normal UniversityChangsha 410081China

Herein,we propose an experimentally feasible scheme to show the quantum phase transition of the Jaynes-Cummings(JC)model by modulating the transition frequency of a two-level system in a quantum Rabi model with strong *** tuning the modulation frequency and amplitude,the ratio of the effective coupling strength of the rotating terms to the effective cavity(atomic transition)frequency can enter the deep-strong coupling regime,while the counter-rotating terms can be ***,a deep-strong JC model is *** ratio of the coupling strength to resonance frequencies in the deep-strong JC model is two orders of magnitude larger than the corresponding ratio in the original quantum Rabi *** scheme can be employed in atom-cavity resonance and off-resonance cases,and it is valid over a broad *** nonzero average cavity photons of the ground state indicate the emergence of a quantum phase ***,we demonstrate the dependence of the phase diagram on the atom-cavity detuning and modulation *** the parameters used in our scheme are within the reach of current experimental *** scheme provides a new mechanism for investigating the critical phenomena of finite-sized systems without requiring classical field limits,thereby opening a door for studying fundamental quantum phenomena occurring in the ultrastrong and even deep-strong coupling regimes.

关键词： Jaynes-Cummings model quantum phase transition frequency modulation

Improvements in properties of NdFeB magnets obtained via magnetron sputtering and thermal diffusion

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Journal of Rare Earths 2024年第9期42卷 1710-1716,I0003页

作者： jin Tang Weichao huang Dan Li School of Electronic Engineering Guangxi University of Science and TechnologyLiuzhou545006China China Rare Earth(Guangxi)jinyuan Rare Earth New Materials Co. Ltd.Hezhou542603China China Rare Earth Group Co. Ltd.Ganzhou341000China Center of Experimental Teaching for Common Courses Panzhihua UniversityPanzhihua617000China

The grain boundary diffusion process(GBDP) of Dy and DyAl on sintered NdFeB magnets was conducted via magnetron-sputtering deposition of Dy and DyAl films to enhance coercivity(H_(cj)),The magnetic properties,microstructure and anti-corrosion properties of Dy-surface-alloying NdFeB magnets obtained via magnetron sputtering and thermal diffusion were *** H_(cj) of the Dy_(95)Al_(5)-NdFeB magnet increases by 32.68%,while the remanence declines ***,X-ray diffraction and microstructural analysis confirm the formation of Dy-rich shells,the higher-magnetic-anisotropy field of hard(Nd_(x)Dy_(1-x))2(FeAl)_(14)B magnetic phases and an optimised grain boundary structu re,contributing to the H_(cj)enhancement of the *** elemental distribution and diffusion mechanism of the magnets are also ***,the corrosion resistance of the Dy_(95)Al_(5)-NdFeB magnet is substantially improved by enhancing the electrochemical stability and optimising the distribution and morphology of the intergranular *** findings of this study are of substantial importance in the development of low-heavy rare-earth sintered NdFeB magnets.

关键词： Magnetron sputtering NdFeB Rare earths Microstructure Magnetic property Corrosion resistance