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FS快速序列分析同时测定水样中多种金属元素

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中国卫生检验杂志 2007年第8期17卷 1425-1425,1519页

作者：方波钟良康浙江省宁波市镇海区疾病预防控制中心浙江宁波315200

目的：建立简便、快速、高效的同时测定样品中多种金属元素的方法.方法：利用原子吸收光谱仪的快速序列分析技术,同时测定4种待测元素.结果：以铁、锰、铜、锌4种元素测定为例,线性范围均在0～2.00 mg/L和0～3.00 mg/L,最低检出限≤0.00... 详细信息

目的：建立简便、快速、高效的同时测定样品中多种金属元素的方法.方法：利用原子吸收光谱仪的快速序列分析技术,同时测定4种待测元素.结果：以铁、锰、铜、锌4种元素测定为例,线性范围均在0～2.00 mg/L和0～3.00 mg/L,最低检出限≤0.003 mg/L,RSD＜5%,而且回收率也在95%～102%之间.结论：用240FS快速序列技术同时测定多种金属元素简单、快速、灵敏,既减少工作量,又节省样品,非常值得推广.

关键词：快速序列分析同时测定金属元素

基于纳米二氧化锆与铂微粒复合修饰玻碳电极的甲醛传感器研究

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分析测试学报 2010年第2期29卷 111-114,119页

作者：周忠亮康天放鲁理平北京工业大学环境与能源工程学院北京100124

采用循环伏安法在玻碳电极表面依次电沉积纳米二氧化锆和铂微粒，制备了一种检测甲醛的新型电化学传感器。用电镜扫描对该修饰电极表面进行了表征，循环伏安法和线性扫描伏安法研究了甲醛在该修饰电极上的电催化氧化作用，优化了实验参... 详细信息

采用循环伏安法在玻碳电极表面依次电沉积纳米二氧化锆和铂微粒，制备了一种检测甲醛的新型电化学传感器。用电镜扫描对该修饰电极表面进行了表征，循环伏安法和线性扫描伏安法研究了甲醛在该修饰电极上的电催化氧化作用，优化了实验参数。结果表明，该修饰电极对甲醛有很好的电催化氧化作用，在0．1mol／LH2SO。溶液中，甲醛的氧化峰电流与其浓度在1．0×10-6～5．0×10-3mol／L范围内呈良好线性关系，回归方程为Lp（μA）=79．95＋2．005×105c（mol／L），相关系数r=0．9993，检出限为5．0×10-7mol／L。

关键词：电化学传感器甲醛纳米二氧化锆铂微粒

2013年镇海区不同种类蔬菜污染监测与分析

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中国卫生检验杂志 2015年第6期25卷 873-874页

作者：蔡曦丁坚强钟良康蒋萍宁波市镇海区疾病预防控制中心浙江宁波315200

目的通过监测了解2013年镇海区不同品种蔬菜污染现状,并提出相应的预防和控制措施。方法选择镇海区两镇四街道的无公害蔬菜生产基地、周边散户种植以及菜市场中的蔬菜进行抽样检测,采用石墨炉原子吸收分光光度法、原子荧光法对样品进行... 详细信息

目的通过监测了解2013年镇海区不同品种蔬菜污染现状,并提出相应的预防和控制措施。方法选择镇海区两镇四街道的无公害蔬菜生产基地、周边散户种植以及菜市场中的蔬菜进行抽样检测,采用石墨炉原子吸收分光光度法、原子荧光法对样品进行分析。结果采用单因子污染指数法和综合污染指数法进行污染状况评价。结果本中心抽检的120份蔬菜重金属以铅、镉污染为主,检出率分别为55.0%、8.3%,砷的检出率为1.7%,汞未检出。不同品种蔬菜中以叶菜类蔬菜受污染为主,受到轻度污染,砷、汞全部未超标。结论镇海区蔬菜污染总体情况良好,部分品种蔬菜重金属超标且含量较高,相关部门应采取措施,综合治理,才能从根本上解决这一问题。

关键词：蔬菜重金属不同种类监测与分析

Investigating Müller glia reprogramming in mice: a retrospective of the last decade, and a look to the future

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Neural Regeneration Research 2025年第4期20卷 946-959页

作者： Zhiyuan Yin Jiahui kang Xuan Cheng Hui Gao Shujia Huo Haiwei Xu Key Lab of Visual Damage and Regeneration&Restoration of Chongqing Southwest Eye HospitalSouthwest HospitalThird Military Medical University(Army Medical University)ChongqingChina

Müller glia,as prominent glial cells within the retina,plays a significant role in maintaining retinal homeostasis in both healthy and diseased *** lower vertebrates like zebrafish,these cells assume responsibility for spontaneous retinal regeneration,wherein endogenous Müller glia undergo proliferation,transform into Müller glia-derived progenitor cells,and subsequently regenerate the entire retina with restored ***,Müller glia in the mouse and human retina exhibit limited neural reprogramming.Müller glia reprogramming is thus a promising strategy for treating neurodegenerative ocular disorders.Müller glia reprogramming in mice has been accomplished with remarkable success,through various *** in molecular,genetic,epigenetic,morphological,and physiological evaluations have made it easier to document and investigate the Müller glia programming process in ***,there remain issues that hinder improving reprogramming efficiency and ***,understanding the reprogramming mechanism is crucial toward exploring factors that will improve Müller glia reprogramming efficiency,and for developing novel Müller glia reprogramming *** review describes recent progress in relatively successful Müller glia reprogramming *** also provides a basis for developing new Müller glia reprogramming strategies in mice,including epigenetic remodeling,metabolic modulation,immune regulation,chemical small-molecules regulation,extracellular matrix remodeling,and cell-cell fusion,to achieve Müller glia reprogramming in mice.

关键词： cell fusion chemical small-molecules epigenetic extracellular matrix immune metabolic mice Müller glia neurodegenerative diseases reprogramming retina regeneration

The autophagy-lysosome pathway:a potential target in the chemical and gene therapeutic strategies for Parkinson’s disease

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Neural Regeneration Research 2025年第1期20卷 139-158页

作者： Fengjuan Jiao Lingyan Meng kang Du Xuezhi Li School of Mental Health Jining Medical UniversityJiningShandong ProvinceChina Shandong Collaborative Innovation Center for Diagnosis Treatment and Behavioral Interventions of Mental DisordersInstitute of Mental HealthJining Medical UniversityJiningShandong ProvinceChina

Parkinson’s disease is a common neurodegenerative disease with movement disorders associated with the intracytoplasmic deposition of aggregate proteins such asα-synuclein in *** one of the major intracellular degradation pathways,the autophagy-lysosome pathway plays an important role in eliminating these *** evidence has shown that upregulation of the autophagy-lysosome pathway may contribute to the clearance ofα-synuclein aggregates and protect against degeneration of dopaminergic neurons in Parkinson’s ***,multiple genes associated with the pathogenesis of Parkinson’s disease are intimately linked to alterations in the autophagy-lysosome ***,this pathway appears to be a promising therapeutic target for treatment of Parkinson’s *** this review,we briefly introduce the machinery of ***,we provide a description of the effects of Parkinson’s disease–related genes on the autophagy-lysosome ***,we highlight the potential chemical and genetic therapeutic strategies targeting the autophagy–lysosome pathway and their applications in Parkinson’s disease.

关键词： autophagy chemical therapy gene therapy Parkinson’s disease α-synuclein

固相萃取-高效液相色谱法同时测定饮料中10种食品添加剂

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中国卫生检验杂志 2015年第12期25卷 1910-1912页

作者：蔡曦丁坚强钟良康蒋萍施家威宁波市镇海区疾病预防控制中心浙江宁波315200 宁波市疾病预防控制中心浙江宁波315000

目的建立固相萃取-高效液相色谱法同时测定饮料中10种食品添加剂苯甲酸、山梨酸、糖精钠、柠檬黄、苋菜红、胭脂红、日落黄、赤藓红、亮蓝、诱惑红的方法。方法样品经固相萃取后,经色谱柱Waters sunfire C18(4.6 mm×250 mm,5μm)进行分... 详细信息

目的建立固相萃取-高效液相色谱法同时测定饮料中10种食品添加剂苯甲酸、山梨酸、糖精钠、柠檬黄、苋菜红、胭脂红、日落黄、赤藓红、亮蓝、诱惑红的方法。方法样品经固相萃取后,经色谱柱Waters sunfire C18(4.6 mm×250 mm,5μm)进行分离,流动相为甲醇-乙酸铵溶液进行梯度洗脱,柱温为30℃;进样量为10μl,流速为1.0 ml/min,检测波长为230 nm。结果 10种食品添加剂40 min内完全分离,最低检出限为0.08 mg/L^0.24 mg/L,在3个浓度水平下,加标回收率为87.8%~103.9%。相对标准偏差(RSD)为0.94%~5.41%。结论该方法简单、准确可靠,适用于饮料中10种食品添加剂的同时测定。

关键词：固相萃取高效液相色谱法食品添加剂饮料

Ethylene Polymerization and Copolymerization with Polar Monomers by Benzothiophene-bridged BPMO-Pd Catalysts

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Chinese Journal of Polymer Science 2020年第6期38卷 579-586页

作者： Hong-liang Mu Jun-Hao Ye Guang-Lin Zhou kang-kang Li zhong-Bao Jian State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

A series of new bisphosphine-monoxide(BPMO)ligands based on benzothiophene backbone and the corresponding palladium complexes{k2-P(O)(Ph)2-3-PR1R2-C8H4S}PdMeCl{2a:R1=R2=Ph;2b:R1=R2=2-0Me-Ph;2c:R1=R2=2-CF3-Ph;2d:Rl=Ph,R2=2-(2',6'-(OMe)2C6Hz)-C6H4}were synthesized and fully characterized by1H-,13C-,31P-,and 2D-NMR spectroscopy and single-crystal X-ray *** the presence of Na+B[3,5-(CF3)2C6H3]4(NaBArF),these complexes showed very high activities(up to 2.0 x 10’g-mol-1.h-)for ethylene *** significantly,these catalysts enabled the copolymerization of ethylene with a broad scope of commercially available polar comonomers such as acrylates,acrylic acid,acrylonitrile,vinyltrialkoxysilane,allyl acetate,and long-chain 6-chloro-1-hexene to give functionalized polyethylene with reasonable catalytic activities(up to 105 g-mol-l.h-)and incorporations(up to 5.3 mol96).This contribution suggests that,besides the modulation of conventionally steric and electronic factors,the connectivity(at dfferent linking positions)of BPMO(P,O)donors to the heteroaryl backbone also greatly infuences the catalyst properties in terms of catalytic activity,polymer branching content,comonomer scope,and comonomer incorporation.

关键词： Olefin polymerization Bisphosphine monoxide Plladium Polar monomers Heteroaryl backbone

Potential role of tanycyte-derived neurogenesis in Alzheimer's disease

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Neural Regeneration Research 2025年第6期20卷 1599-1612页

作者： Guibo Qi Han Tang Jianian Hu Siying kang Song Qin Department of Anatomy Histologyand EmbryologySchool of Basic Medical SciencesFudan UniversityShanghaiChina State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science Fudan UniversityShanghaiChina

Tanycytes, specialized ependymal cells located in the hypothalamus, play a crucial role in the generation of new neurons that contribute to the neural circuits responsible for regulating the systemic energy balance. The precise coordination of the gene networks controlling neurogenesis in naive and mature tanycytes is essential for maintaining homeostasis in adulthood. However, our understanding of the molecular mechanisms and signaling pathways that govern the proliferation and differentiation of tanycytes into neurons remains limited. This article aims to review the recent advancements in research into the mechanisms and functions of tanycyte-derived neurogenesis. Studies employing lineage-tracing techniques have revealed that the neurogenesis specifically originating from tanycytes in the hypothalamus has a compensatory role in neuronal loss and helps maintain energy homeostasis during metabolic diseases. Intriguingly,metabolic disorders are considered early biomarkers of Alzheimer's disease. Furthermore,the neurogenic potential of tanycytes and the state of newborn neurons derived from tanycytes heavily depend on the maintenance of mild microenvironments, which may be disrupted in Alzheimer's disease due to the impaired blood–brain barrier ***, the specific alterations and regulatory mechanisms governing tanycyte-derived neurogenesis in Alzheimer's disease remain unclear. Accumulating evidence suggests that tanycyte-derived neurogenesis might be impaired in Alzheimer's disease, exacerbating neurodegeneration. Confirming this hypothesis, however, poses a challenge because of the lack of long-term tracing and nucleus-specific analyses of newborn neurons in the hypothalamus of patients with Alzheimer's disease. Further research into the molecular mechanisms underlying tanycyte-derived neurogenesis holds promise for identifying small molecules capable of restoring tanycyte proliferation in neurodegenerative diseases. This line of investigation could pro

关键词： Alzheimer's disease blood–brain barrier ependymoglial cells hypothalamus metabolic diseases neural stem cells neurogenesis neuroinflammatory diseases neurons tanycyte

Deciphering the molecular mechanisms of Simiaowan in the treatment of hyperuricemia: in vivo and in silico approaches

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Traditional Medicine Research 2025年第2期10卷 37-54页

作者： Yong-Chang Zeng Jun-Hong Wu Dan-Dan Xu kang He Chang-Qing Liu Li-Fei Song Zheng-Zhi Wu Qian-Qian Jiang Shao-Yu liang Department of Neurology The First Affiliated Hospital of Shenzhen UniversityShenzhen 518020China Pharmaceutical Department The Affiliated TCM Hospital of Guangzhou Medical UniversityGuangzhou 510000China School of Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang 550025China Guangzhou Zeli Medical Technology Co. Ltd.Guangzhou 510700China

Background:Simiaowan(SMW),a well-known traditional Chinese medicine,has been employed to treat hyperuricemia(HUA)and gout for ***,the bioactive components and underlying mechanisms have not been *** objective of this study was to identify the active components and potential mechanisms of SMW by integrating pharmacological experimentation,serum pharmacochemistry,network pharmacology and molecular ***:HUA rats modelling by high-fat/high-sugar diet and potassium oxonate/adenine oral administration were used to evaluate the pharmacodynamic effects of ***-Q-Exactive-MS/MS was employed to detect the bioactive components present in SMW-containing *** pharmacology and molecular docking were utilized to elucidate the potential targets and underlying ***:SMW effectively ameliorated HUA rats via the inhibition of uric acid(UA)production,promotion of UA excretion,improvement of lipid and glucose metabolic abnormalities,antioxidant,anti-inflammatory and anti-insulin resistance effects.A total of 73 compounds detected in SMW-containing serum were identified as potential active components,with alkaloids,flavonoids,organic acids,and terpenoids emerging as the primary active *** 203 corresponding targets were obtained as SMW anti-HUA/gout targets,which mainly participated in apoptosis,insulin resistance,TNF,PI3K-Akt,HIF-1,NF-κB,MAPK,IL-17 and TLR signaling *** docking indicated that active compounds(***,phellodendrine,quercetin,formononetin,ferulic acid)had superior binding abilities to the key targets(*** carrier family 22 member 12(URAT1),solute carrier family 22 member 6(OAT1),ATP-binding cassette sub-family G member 2(ABCG2),solute carrier family 2,facilitated glucose transporter member 9(GLUT9),xanthine dehydrogenase/oxidase(XDH),transcription factor p65(RELA),toll-like receptor 4(TLR4),prostaglandin G/H synthase 2(PTGS2),caspase-3(CASP3),insulin(INS)).Conclusion:S

关键词： hyperuricemia network pharmacology serum pharmacochemistry Simiaowan UPLC-Q-Exactive-MS/MS