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Molecular mechanisms of noncoding RNA and epigenetic regulation in obesity with consequent diabetes mellitus development

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World Journal of Diabetes 2023年第11期14卷 1621-1631页

作者： Yi-Chen Guo Hao-Di Cao Xiao-Fen Lian pei-xian wu Fan Zhang Hua Zhang Dong-Hui Lu Department of Endocrinology Peking University Shenzhen HospitalShenzhen 518036Guangdong ProvinceChina Department of Endocrinology Zhujiang Hospital of Southern Medical UniversityGuangzhou 510282Guangdong ProvinceChina

Diabetes mellitus(DM)and obesity have become two of the most prevalent and challenging diseases worldwide,with increasing incidence and serious *** studies have shown that noncoding RNA(ncRNA)and epigenetic regulation play crucial roles in the pathogenesis of DM complicated by *** of the involvement of ncRNA and epigenetic regulation in the pathogenesis of diabetes with obesity has opened new avenues of *** these mechanisms with small molecules or RNA-based therapies may provide a more precise and effective approach to diabetes treatment than traditional *** this review,we discuss the molecular mechanisms of ncRNA and epigenetic regulation and their potential therapeutic targets,and the research prospects for DM complicated with obesity.

关键词： Diabetes mellitus Obesity Noncoding RNA Epigenetic regulation Insulin resistance

Remaining Life Prediction Method for Photovoltaic Modules Based on Two-Stage Wiener Process

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Energy Engineering 2025年第1期122卷 331-347页

作者： Jie Lin Hongchi Shen Tingting pei Yan wu School of Electrical Engineering and Information Engineering Lanzhou University of TechnologyLanzhou730050China

Photovoltaic (PV) modules, as essential components of solar power generation systems, significantly influence unitpower generation *** service life of these modules directly affects these costs. Over time, the performanceof PV modules gradually declines due to internal degradation and external environmental *** cumulativedegradation impacts the overall reliability of photovoltaic power generation. This study addresses the complexdegradation process of PV modules by developing a two-stage Wiener process model. This approach accountsfor the distinct phases of degradation resulting from module aging and environmental influences. A powerdegradation model based on the two-stage Wiener process is constructed to describe individual differences inmodule degradation processes. To estimate the model parameters, a combination of the Expectation-Maximization(EM) algorithm and the Bayesian method is employed. Furthermore, the Schwarz Information Criterion (SIC) isutilized to identify critical change points in PV module degradation trajectories. To validate the universality andeffectiveness of the proposed method, a comparative analysis is conducted against other established life predictiontechniques for PV modules.

关键词： Photovoltaic modules degradation stochastic processes lifetime prediction

Depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 335-345页

作者： Feng Zhang Chenyang Zhang Linlin wu Wei Sun Hongliang Zhang Jianhua Chen Yong pei Songjiang Li Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China State Key Laboratory of Mineral Processing Beijing General Research Institute of Mining&MetallurgyBeijing 100160China Hunan Provincial Key Laboratory of Micro&Nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Department of Chemistry Xiangtan UniversityXiangtan 411105China China Railway Resource Group Co.Ltd Beijing 102300China

The depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory(DFT)*** X-ray photoelectric spectroscopy(XPS)results,DFT calculation results,and frontier molecular orbital analysis indicated that sulfite ions were difficult to be adsorbed on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity between sphalerite and ***,sulfite ions were chelated with lead ions to form PbSO_(3)in *** hydrophilic PbSO_(3)was more easily adsorbed on sphalerite than *** interaction between sulfite ions and lead ions could effectively inhibit the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb^(2+)activated sphalerite.

关键词： sphalerite galena sulfite ion density functional theory depression mechanism

Insights into spinal muscular atrophy from molecular biomarkers

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Neural Regeneration Research 2025年第7期20卷 1849-1863页

作者： Xiaodong Xing Xinzhu Liu xiandeng Li Mi Li xian wu Xiaohui Huang Ajing Xu Yan Liu Jian Zhang Department of Clinical Pharmacy Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghaiChina College of Pharmacy Chongqing Medical UniversityChongqingChina

Spinal muscular atrophy is a devastating motor neuron disease characterized by severe cases of fatal muscle *** is one of the most common genetic causes of mortality among infants aged less than 2 *** research is currently receiving more attention,and new candidate biomarkers are constantly being *** review initially discusses the evaluation methods commonly used in clinical practice while briefly outlining their respective pros and *** also describe recent advancements in research and the clinical significance of molecular biomarkers for spinal muscular atrophy,which are classified as either specific or non-specific *** review provides new insights into the pathogenesis of spinal muscular atrophy,the mechanism of biomarkers in response to drug-modified therapies,the selection of biomarker candidates,and would promote the development of future ***,the successful utilization of biomarkers may facilitate the implementation of gene-targeting treatments for patients with spinal muscular atrophy.

关键词： biomarkers disease progression gene-targeting therapy neurofilaments Nusinersen spinal muscular atrophy(SMA) survival motor neuron therapeutic evaluation treatment outcomes

雌激素对去卵巢大鼠骨组织中骨保护素、破骨细胞分化因子和巨噬细胞集落刺激因子mRNA表达的影响

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南方医科大学学报 2006年第4期26卷 532-534页

作者：王强王坤正党晓谦时志斌裴宪武柏传毅贾学武西安交通大学第二医院骨科陕西西安710004

目的观察雌激素对去卵巢大鼠骨组织中骨保护素(OPG)、破骨细胞分化因子(ODF)和巨噬细胞集落刺激因子 (M-CSF)mRNA表达的影响,探讨雌激素预防和治疗绝经后骨质疏松(PMO)的可能细胞因子途径。方法健康3月龄雌性SD大鼠30只,随机等分为假手... 详细信息

目的观察雌激素对去卵巢大鼠骨组织中骨保护素(OPG)、破骨细胞分化因子(ODF)和巨噬细胞集落刺激因子 (M-CSF)mRNA表达的影响,探讨雌激素预防和治疗绝经后骨质疏松(PMO)的可能细胞因子途径。方法健康3月龄雌性SD大鼠30只,随机等分为假手术组,去卵巢组和雌激素组(已烯雌酚片,0．0225 mg·kg-1·d-1,灌胃)。假手术组仅牵动卵巢,其余两组均行卵巢切除术。12周后取第3-6腰椎做骨密度检查。取股骨提总RNA。实时定量PCR法检测上述因子mRNA的表达情况。结果 (1)相对于去卵巢组,雌激素组大鼠腰椎骨密度增高,差异有统计学意义。(2)相对于去卵巢组,雌激素组大鼠骨组织OPG的mRNA表达增高,M-CSF的mRNA表达下降,ODF／OPG值下降。结论雌激素治疗绝经后骨质疏松的效应可能与其调控OPG,M-CSF的表达和ODF／OPG值有关。

关键词：雌激素骨质疏松细胞因子骨保护素破骨细胞分化因子巨噬细胞集落刺激因子

复方紫草油促进实验兔创面碱性成纤维细胞生长因子及其基因的表达和组织学变化

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中国中药杂志 2006年第4期31卷 336-339页

作者：裴宪武王坤正宋金辉王强时志斌高登峰西安交通大学第二医院

目的:通过观察不同创面的组织学变化、碱性成纤维细胞生长因子(basic fibroblast growth factor,bFGF)mRNA的表达和创面的愈合率来探讨紫草油促进创面愈合的分子生物学机制。方法:采用新西兰白兔制作背部皮肤缺损模型,共18只,将每侧的... 详细信息

目的:通过观察不同创面的组织学变化、碱性成纤维细胞生长因子(basic fibroblast growth factor,bFGF)mRNA的表达和创面的愈合率来探讨紫草油促进创面愈合的分子生物学机制。方法:采用新西兰白兔制作背部皮肤缺损模型,共18只,将每侧的创面随机分为2组,复方紫草油组用紫草油对创面进行治疗,对照组用凡士林纱布治疗。用组织学、组织化学、电镜等方法观察创面的组织结构和愈合率、用Western-blot,RT-PCR方法观察2组的bFGF及其mRNA表达。结果:复方紫草油组和对照组的愈合率有显著性差异(P0.05)。结论:在紫草油对创面愈合过程中bFGF有明显的促进作用,bFGF对创伤愈合具有重要的调节作用,紫草油可能是通过促进细胞分泌bFGF的增长来完成创面的修复过程。

关键词：复方紫草油碱性成纤维细胞生长因子创面组织学

骨痂中转化生长因子β1基因表达及利用骨痂植骨对术后功能的影响(英文)

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中国临床康复 2006年第5期10卷 149-151页

作者：裴宪武王坤正阎宏伟柏传毅姜志茹西安交通大学第二医院骨科

背景:在骨折愈合过程中,若将骨折端周围的骨痂组织去除,骨折端比较难完全吻合,可以推测这些骨痂组织是人体在修复过程中的必然产物,应该是有益的,拟将这些骨痂做组织学分析和冰冻切片的原位杂交,观察其组织学内容和转化生长因子β1的含... 详细信息

背景:在骨折愈合过程中,若将骨折端周围的骨痂组织去除,骨折端比较难完全吻合,可以推测这些骨痂组织是人体在修复过程中的必然产物,应该是有益的,拟将这些骨痂做组织学分析和冰冻切片的原位杂交,观察其组织学内容和转化生长因子β1的含量,并做为供骨植于骨折端,了解骨痂植骨在骨折愈合中的作用。目的:通过测定骨痂中的组织学内容和转化生长因子β1的含量来了解延迟手术中骨折端周围骨痂组织的再利用价值。设计:采用骨痂组织原位杂交及随机分组对照的实验。单位:西安交通大学第二医院骨科、台州市中心医院骨科。材料:病例分别选择西安交通大学第二医院骨科和台州市中心医院骨科1994-07/2003-10骨折延迟手术的住院患者51例,在手术中取骨折延迟愈合的骨痂做标本(均已征得患者同意),Dig标记试剂盒购自BoehringerMannheim公司,转化生长因子β1寡核苷酸探针的序列:CTTGCTGTACTGTGTGTCCAA,由DNA合成仪合成,X线计算机系统(CR)购自日本富士公司。方法:在骨折后的2,4,6和8周,在手术中取出少量骨痂做标本,采用不脱钙的骨痂组织做冰冻切片,采用非同位素Dig标记原位杂交,观察转化生长因子β1在骨痂中的基因表达。术中将骨断端清理后,在骨折牢固固定的同时,再将原骨痂植于骨缺损处及骨折周围。对延迟手术的患者分别采用单纯骨痂植骨、髂骨植骨,骨痂加髂骨植骨,经1～4年患者复诊随访,平均1年9个月。主要观察指标:①骨折不同时期骨痂中的组织学内容和转化生长因子β1的含量。②不同植骨方式对骨折愈合时间的影响。结果:参加治疗51例,有7例因死亡和到外地生活而未能进行随访,评定44例,纳入结果分析。①骨痂中转化生长因子β1的基因表达:骨折后第2周,骨折端有少量纤维骨痂,软骨骨痂较多,转化生长因子β1在软骨小岛内的软骨细胞中高表达。骨折后4周左右转化生长因子β1在成骨细胞内表达显著。8周左右大量骨痂生长,并以软骨化骨为主,成纤维细胞、骨痂、成骨细胞、骨小梁越来越多,术后6周转化生长因子β1在各种细胞内的表达消失,但随着骨重建过程增强,8周时骨基质中转化生长因子β1表达又有增高趋势。②不同植骨方式的愈合时间:不同的植骨方式在愈合时间上没有显著性差异。结论:转化生长因子β1在骨愈合的平衡中发挥重要作用,不同阶段骨痂的组织变化和转化生长因子β1量的变化有着必然的联系,骨痂是机体修复和重建的产物,骨痂植骨再利用是一种可行的方法,它对需要植骨的患者可减少其痛苦和损伤。

关键词：转化生长因子β 原位杂交基因表达骨痂骨移植

二苯基甲烷二异氰酸酯改性凹凸棒石的合成与表征

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现代化工 2010年第8期30卷 56-58页

作者：王毅冯辉霞裴先武张文娟张义新邱建辉兰州理工大学石油化工学院甘肃兰州730050 甘肃银光聚银化工有限公司甘肃白银730900 日本秋田县立大学系统科学技术学部

为改善凹凸棒石(ATTP)和聚合物之间的相容性,以二苯基甲烷二异氰酸酯(MDI)为改性剂,利用MDI含有的异氰酸酯基与ATTP表面的羟基反应制备了MDI改性ATTP。测定结果表明反应程度达到74.15%;表征结果证实MDI接枝到了凹凸棒石表面,ATTP的结构... 详细信息

为改善凹凸棒石(ATTP)和聚合物之间的相容性,以二苯基甲烷二异氰酸酯(MDI)为改性剂,利用MDI含有的异氰酸酯基与ATTP表面的羟基反应制备了MDI改性ATTP。测定结果表明反应程度达到74.15%;表征结果证实MDI接枝到了凹凸棒石表面,ATTP的结构未发生改变,MDI/ATTP分散性能良好。

关键词：二苯基甲烷二异氰酸酯(MDI) 凹凸棒石改性

Transport of Propylene Carbonate-LiTFSI Electrolytes in P(VDF-HFP)Using Time-resolved ATR-FTIR Spectroscopy:Diffusion Coefficients and Molecular Interactions

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Chinese Journal of Polymer Science 2021年第8期39卷 975-983,I0005页

作者： Hui-xian Li Lei Hou pei-Yi wu National Engineering Research Center for Dyeing and Finishing of Textiles College of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China

The time-resolved attenuated total reflectance-Fourier transform infrared(ATR-FTIR)spectroscopy is employed to investigate the transport mechanism of gel electrolytes by monitoring the diffusion behavior of propylene carbonate-lithium bis(trifluoromethylsulfonyl)imide(PC-LiTFSI)solution through poly(vinylidene fluoride-co-hexafluoropropylene)(P(VDF-HFP))*** behavior has been observed for both TFSr and *** temperature leads to faster diffusion of TFSI'and PC,which could be related to the increased free volume in P(VDF-HFP)matrix and rapid molecular movements upon *** molecular interactions among LiTFSI,PC and P(VDF-HFP)have been *** the diffusion process,PC molecules,in the form of small clusters,can firstly diffuse through the P(VDF-HFP)film and interact with P(VDF-HFP)by dipole-dipole interaction,acting as the ***,Li+diffuses into P(VDF-HFP)with the help of ion-dipole interactions between Li+and C=0 of ***,TFSI-diffuses through the polymer matrix in solvation *** addition,slight ion-dipole interactions between Li+and P(VDF-HFP)have been observed as *** in this work contribute to a better understanding of transport process in gel polymer electrolytes for lithium-ion batteries and support the development of improved gel polymer electrolytes by rationally regulating molecular interactions.

关键词： ATR-FTIR spectroscopy Gel polymer electrolyte Transport mechanism Molecular interaction Diffusion coefficient