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Hydrogen sulfide reduces oxidative stress in Huntington's disease via Nrf2

Neural Regeneration Research 2025年第6期20卷 1776-1788页

作者： Zige Jiang Dexiang liu Tingting Li Chengcheng Gai Danqing Xin Yijing Zhao yan Song Yahong Cheng Tong Li Zhen Wang Department of Physiology School of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Medical Psychology and Ethics School of Basic Medicine SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Neurosurgery Surgery Qingdao Municipal HospitalQingdaoShandong ProvinceChina

The pathophysiology of Huntington's disease involves high levels of the neurotoxin quinolinic acid. Quinolinic acid accumulation results in oxidative stress, which leads to neurotoxicity. However, the molecular and cellular mechanisms by which quinolinic acid contributes to Huntington's disease pathology remain unknown. In this study, we established in vitro and in vivo models of Huntington's disease by administering quinolinic acid to the PC12 neuronal cell line and the striatum of mice, respectively. We observed a decrease in the levels of hydrogen sulfide in both PC12 cells and mouse serum, which was accompanied by down-regulation of cystathionine β-synthase, an enzyme responsible for hydrogen sulfide production. However, treatment with NaHS(a hydrogen sulfide donor) increased hydrogen sulfide levels in the neurons and in mouse serum, as well as cystathionine β-synthase expression in the neurons and the mouse striatum, while also improving oxidative imbalance and mitochondrial dysfunction in PC12 cells and the mouse striatum. These beneficial effects correlated with upregulation of nuclear factor erythroid 2-related factor 2 expression. Finally, treatment with the nuclear factor erythroid 2-related factor 2inhibitor ML385 reversed the beneficial impact of exogenous hydrogen sulfide on quinolinic acid-induced oxidative stress. Taken together, our findings show that hydrogen sulfide reduces oxidative stress in Huntington's disease by activating nuclear factor erythroid 2-related factor 2,suggesting that hydrogen sulfide is a novel neuroprotective drug candidate for treating patients with Huntington's disease.

关键词： apoptosis cystathionine-β-synthase nuclear factor erythroid 2-related factor 2 Huntington's disease hydrogen sulfide mitochondrion neuroplasticity oxidative stress quinolinic acid reactive oxygen species

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不同产地高良姜的质量分析及其抗肿瘤活性部位筛选

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中南药学 2017年第9期15卷 1241-1245页

作者：马小青罗焱杨敏刘焱文刘丹湖北中医药大学药学院中药资源与中药化学湖北省重点实验室武汉430061 湖北中医药大学药学院武汉430065

目的对来自不同产地的高良姜饮片进行质量分析,确定优质高良姜药材来源,在此基础上,筛选其对6种肿瘤细胞的抗肿瘤活性部位。方法以高良姜素含量为指标,利用HPLC法对不同产地的高良姜进行质量分析,色谱柱为Agilent C_(18)(4.6 mm×250 m... 详细信息

目的对来自不同产地的高良姜饮片进行质量分析,确定优质高良姜药材来源,在此基础上,筛选其对6种肿瘤细胞的抗肿瘤活性部位。方法以高良姜素含量为指标,利用HPLC法对不同产地的高良姜进行质量分析,色谱柱为Agilent C_(18)(4.6 mm×250 mm,5μm)柱,检测波长266 nm,柱温25℃,流动相甲醇-0.2%磷酸(55∶45),流速1 mL·min^(-1)。采用石油醚、二氯甲烷、乙酸乙酯、正丁醇依次对高良姜85%乙醇提取物进行萃取,将得到的各提取部位用MTT法评价其体外细胞毒活性,进行抗肿瘤活性筛选。结果广东产高良姜中高良姜素含量高于其他2个产地,为14.17 mg·g^(-1)。高良姜石油醚萃取部位和二氯甲烷萃取部位对6种肿瘤细胞均有明显抑制作用,活性强于乙酸乙酯萃取部位、正丁醇萃取部位与水部位,且呈现时间和浓度依赖关系。对人宫颈癌细胞株Hela抑制效果最好,石油醚萃取部位24 h与48 h的IC_(50)分别为7.88、6.55μg·mL^(-1);二氯甲烷萃取部位24 h与48 h的IC_(50)分别为6.13、4.78μg·mL^(-1)。结论 HPLC法优选方便、高效,高良姜抗肿瘤活性的有效部位为石油醚萃取部位和二氯甲烷萃取部位。

关键词：高良姜高良姜素活性部位抗肿瘤活性筛选

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高氧肺损伤鼠STAT的表达及其与气道炎症的关系

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中国妇幼保健 2012年第32期27卷 5143-5146页

作者：杨慧鲍燕敏刘晓红广东省深圳市儿童医院 518000

目的:研究信号转导因子与转录活化因子(STAT)在高氧肺损伤中的表达及STAT对高氧肺损伤气道炎症调控,以探讨STAT信号传导在高氧肺损伤发病机制中的作用。方法:48只大鼠分为空气组1,3,7,14天组,高氧组1,3,7,14天组,光镜下观察各组病理变化... 详细信息

目的:研究信号转导因子与转录活化因子(STAT)在高氧肺损伤中的表达及STAT对高氧肺损伤气道炎症调控,以探讨STAT信号传导在高氧肺损伤发病机制中的作用。方法:48只大鼠分为空气组1,3,7,14天组,高氧组1,3,7,14天组,光镜下观察各组病理变化,观察高氧环境下羟脯氨酸含量变化和肺组织巨噬细胞的变化,免疫组化方法检测STAT及细胞粘附因子-1(ICAM-1)的表达。结果:高氧组的羟脯氨酸含量在3,7,14天组均明显高于对照组;支气管肺泡灌洗中巨噬细胞明显升高。对照组及高氧组STAT积分吸光度在第1天(11.2±2.1 vs 19.4±4.2),第3天(9.8±3.4 vs 39.8±3.9),第7天(10.6±2.8 vs 63.5±6.2),第14天(12.3±2.9 vs 30.5±4.9),两组对比均有统计学差异;对照组及高氧组ICAM-1积分吸光度,除第1天外,两组对比均有统计学差异。结论:高氧肺损伤后羟脯氨酸含量明显升高,出现巨噬细胞浸润,提示有肺纤维化趋势及炎症因子的作用,同时STAT持续活化及过度表达,主要表达于气道上皮细胞及巨噬细胞,ICAM-1持续表达,提示STAT与高氧肺损伤的炎症反应有关,在高氧肺损伤炎症调控中起重要作用。

关键词：慢性肺疾病高氧肺损伤信号转导转录活化因子

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T cell interactions with microglia in immune-inflammatory processes of ischemic stroke

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Neural Regeneration Research 2025年第5期20卷 1277-1292页

作者： Yuxiao Zheng Zilin Ren Ying liu Juntang yan Congai Chen yanhui He Yuyu Shi Fafeng Cheng Qingguo Wang Changxiang Li Xueqian Wang School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijingChina Library Beijing University of Chinese MedicineBeijingChina Dongzhimen Hospital Beijing University of Chinese MedicineBeijingChina

The primary mechanism of secondary injury after cerebral ischemia may be the brain inflammation that emerges after an ischemic stroke,which promotes neuronal death and inhibits nerve tissue *** the first immune cells to be activated after an ischemic stroke,microglia play an important immunomodulatory role in the progression of the *** an ischemic stroke,peripheral blood immune cells(mainly T cells)are recruited to the central nervous system by chemokines secreted by immune cells in the brain,where they interact with central nervous system cells(mainly microglia)to trigger a secondary neuroimmune *** review summarizes the interactions between T cells and microglia in the immune-inflammatory processes of ischemic *** found that,during ischemic stroke,T cells and microglia demonstrate a more pronounced synergistic ***1,Th17,and M1 microglia can co-secrete proinflammatory factors,such as interferon-γ,tumor necrosis factor-α,and interleukin-1β,to promote neuroinflammation and exacerbate brain ***2,Treg,and M2 microglia jointly secrete anti-inflammatory factors,such as interleukin-4,interleukin-10,and transforming growth factor-β,to inhibit the progression of neuroinflammation,as well as growth factors such as brain-derived neurotrophic factor to promote nerve regeneration and repair brain *** interactions between microglia and T cells influence the direction of the subsequent neuroinflammation,which in turn determines the prognosis of ischemic stroke *** trials have been conducted on the ways to modulate the interactions between T cells and microglia toward anti-inflammatory communication using the immunosuppressant fingolimod or overdosing with Treg cells to promote neural tissue repair and reduce the damage caused by ischemic ***,such studies have been relatively infrequent,and clinical experience is still *** summary,in ischemic stroke,T cell subsets and activated micro

关键词： brain immune inflammation interaction ischemic stroke mechanism microglia neuron secondary injury T cells

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Nanomaterials-mediated lysosomal regulation:a robust protein-clearance approach for the treatment of Alzheimer’s disease

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Neural Regeneration Research 2025年第2期20卷 424-439页

作者： Mengqi Hao Jianjian Chu Tinglin Zhang Tong Yin Yuankai Gu Wendanqi Liang Wenbo Ji Jianhua Zhuang yan liu Jie Gao You Yin Department of Neurology Second Affiliated Hospital of Naval Medical University(Shanghai Changzheng Hospital)ShanghaiChina School of Health Science and Engineering University of Shanghai for Science and TechnologyShanghaiChina Changhai Clinical Research Unit Shanghai Changhai HospitalNaval Medical UniversityShanghaiChina Department of Clinical Pharmacy Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghaiChina Department of Neurology Shanghai East HospitalSchool of MedicineTongji UniversityShanghaiChina

Alzheimer’s disease is a debilitating,progressive neurodegenerative disorder characterized by the progressive accumulation of abnormal proteins,including amyloid plaques and intracellular tau tangles,primarily within the ***,crucial intracellular organelles responsible for protein degradation,play a key role in maintaining cellular *** studies have suggested a link between the dysregulation of the lysosomal system and pathogenesis of neurodegenerative diseases,including Alzheimer’s *** the normal physiological function of lysosomes hold the potential to reduce the pathological burden and improve the symptoms of Alzheimer’s ***,the efficacy of drugs in treating Alzheimer’s disease is limited,with major challenges in drug delivery efficiency and ***,nanomaterials have gained widespread use in Alzheimer’s disease drug research owing to their favorable physical and chemical *** review aims to provide a comprehensive overview of recent advances in using nanomaterials(polymeric nanomaterials,nanoemulsions,and carbon-based nanomaterials)to enhance lysosomal function in treating Alzheimer’s *** review also explores new concepts and potential therapeutic strategies for Alzheimer’s disease through the integration of nanomaterials and modulation of lysosomal *** conclusion,this review emphasizes the potential of nanomaterials in modulating lysosomal function to improve the pathological features of Alzheimer’s *** application of nanotechnology to the development of Alzheimer’s disease drugs brings new ideas and approaches for future treatment of this disease.

关键词： Alzheimer’s disease autophagy dysfunction lysosomal acidification lysosomal system nanomaterials neurodegenerative diseases

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老年人体育健身现状及策应研究——以南昌市D区为例

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社会工作 2010年第24期 60-62页

作者：徐艳玲刘敏南昌航空大学体育学院江西南昌330063

本文为了深入了解南昌市老年人体育健身的现状,进而提出科学、合理、切实可行的健身处方,特采用问卷调查法、数理统计法、逻辑分析法对南昌市D区老年人体育健身情况进行调查研究。结果显示:南昌市不同性别老年人参与体育健身的积极性都... 详细信息

本文为了深入了解南昌市老年人体育健身的现状,进而提出科学、合理、切实可行的健身处方,特采用问卷调查法、数理统计法、逻辑分析法对南昌市D区老年人体育健身情况进行调查研究。结果显示:南昌市不同性别老年人参与体育健身的积极性都较高,健身内容与手段呈现多样化,健身活动场所相对固定,参与体育健身的目的较为明确。但是,在健身科学化上还存在不足,缺乏场地器材、缺乏时间、缺乏指导成为影响参与体育健身的最重要因素。

关键词：南昌市老年人健身现状对策研究

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Construction of Supersaturated Design with Large Number of Factors by the Complementary Design Method

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Acta Mathematicae Applicatae Sinica 2013年第2期29卷 253-262页

作者： yan liu min-Qian liu School of Mathematical Sciences Tianjin Normal University Department of Statistics School of Mathematical Sciences and LPMC Nankai University

Supersaturated designs （SSDs） have been widely used in factor screening experiments. The present paper aims to prove that the maximal balanced designs are a kind of special optimal SSDs under the E（fNOD） criterion. We also propose a new method, called the complementary design method, for constructing E（fNoD） optimal SSDs. The basic principle of this method is that for any existing E（fNOD） optimal SSD whose E（fNOD） value reaches its lower bound, its complementary design in the corresponding maximal balanced design is also E（fNOD） optimal. This method applies to both symmetrical and asymmetrical （mixed-level） cases. It provides a convenient and efl：icient way to construct many new designs with relatively large numbers of factors. Some newly constructed designs are given as examples.

关键词： balanced design coincidence number complementary design equidistant design weak equidistantdesign

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Plasmon-induced local electric field improved hydrogen evolution reaction on Ag/Mo_(2)C nanosheets

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Nano Research 2025年第1期18卷 270-277页

作者： HuangJingWei Li Xin Zi Jun Wu Xinli Wang Li Zhu Qiyou Wang Jianfu Han Junwei Fu Hongmei Li Kai Huang Yu Chen min liu School of Physics State Key Laboratory of Powder MetallurgyHunan Joint International Research Center for Carbon Dioxide Resource UtilizationCentral South UniversityChangsha 410083China School of Metallurgy and Environment Central South UniversityChangsha 410083China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Nano-Institute Munich Faculty of PhysicsLudwig-Maxilimians-Universität MünchenMünchen 80539Germany Hunan Institute of Advanced Sensing and Information Technology Xiangtan UniversityXiangtan 411105China

Electrocatalytic water splitting offers a promising way for hydrogen production with near-zero ***,such as molybdenum carbides(Mo_(2)C),are promising materials for hydrogen evolution reaction(HER)but still suffer from poor intrinsic water activation ***,we developed a plasmon-induced local electric field(PILEF)strategy to solve this ***(Ag)nanoparticles decorated Mo_(2)C nanosheets(Ag/Mo_(2)C)were successfully prepared by electrostatic *** visible light excited the PILEF on Ag/Mo_(2)C remarkably reducing the activation energy by 92.7 kJ·mol^(-1)from 147.3 kJ·mol^(-1)of Mo_(2)C to 54.6 kJ·mol^(-1).As a result,the plasmonic Ag/Mo_(2)C significantly enhances~2.3-fold of the current density from 2.8 mA·cm^(-2)of Mo_(2)C to 6.5 mA·cm^(-2)at-3 V *** and reduces the overpotential by 104 mV from 403 mV of dark state to 299 mV of light state at the current density of 10 mA·cm^(-2),achieving better performance than reported *** research demonstrates that PILEF enhances HER activities,offering a potential strategy for boosting the intrinsic activities of catalysts.

关键词： sliver particles plasmon effect field effect hydrogen evolution reaction(HER) electrocatalysis

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Human-induced pluripotent stem cell-derived neural stem cell exosomes improve blood-brain barrier function after intracerebral hemorrhage by activating astrocytes via PI3K/AKT/MCP-1 axis

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Neural Regeneration Research 2025年第2期20卷 518-532页

作者： Conglin Wang Fangyuan Cheng Zhaoli Han Bo yan Pan Liao Zhenyu Yin Xintong Ge Dai Li Rongrong Zhong Qiang liu Fanglian Chen Ping Lei Department of Geriatrics Tianjin Medical University General HospitalTianjinChina School of Medicine Nankai UniversityTianjinChina Tianjin Neurological Institute TianjinChina

Cerebral edema caused by blood-brain barrier injury after intracerebral hemorrhage is an important factor leading to poor ***-induced pluripotent stem cell-derived neural stem cell exosomes(hiPSC-NSC-Exos)have shown potential for brain injury repair in central nervous system *** this study,we explored the impact of hiPSC-NSC-Exos on blood-brain barrier preservation and the underlying *** results indicated that intranasal delivery of hiPSC-NSC-Exos mitigated neurological deficits,enhanced blood-brain barrier integrity,and reduced leukocyte infiltration in a mouse model of intracerebral ***,hiPSC-NSC-Exos decreased immune cell infiltration,activated astrocytes,and decreased the secretion of inflammatory cytokines like monocyte chemoattractant protein-1,macrophage inflammatory protein-1α,and tumor necrosis factor-αpost-intracerebral hemorrhage,thereby improving the inflammatory *** sequencing indicated that hiPSC-NSC-Exo activated the PI3K/AKT signaling pathway in astrocytes and decreased monocyte chemoattractant protein-1 secretion,thereby improving blood-brain barrier *** with the PI3K/AKT inhibitor LY294002 or the monocyte chemoattractant protein-1 neutralizing agent C1142 abolished these *** summary,our findings suggest that hiPSC-NSC-Exos maintains blood-brain barrier integrity,in part by downregulating monocyte chemoattractant protein-1 secretion through activation of the PI3K/AKT signaling pathway in astrocytes.

关键词： AKT astrocyte blood-brain barrier cerebral edema exosomes human-induced pluripotent stem cells intracerebral hemorrhage neural stem cells neuroinflammation PI3K

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Bending Stiffness of Concrete-Filled Steel Tube and Its Influence on Concrete Placement Timing of Composite Beam-String Structure

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Structural Durability & Health Monitoring 2025年第1期19卷 55-75页

作者： Zhenyu Zhang Quan Jin Haitao Zhang Zhao liu Yuyang Wu Longfei Zhang Renzhang yan CCCC Third Highway Engineering Co. Ltd.Beijing101300China School of Civil Engineering Chongqing Jiaotong UniversityChongqing400074China

When the upper chord beam of the beam-string structure(BSS)is made of concrete-filled steel tube(CFST),its overall stiffness will change greatly with the construction of concrete placement,which will have an impact on the design of the tensioning plans and selection of control measures for the *** order to accurately obtain the bending stiffness of CFST beam and clarify its impact on the mechanical properties of composite BSS during construction,the influence of some factors such as height-width ratio,wall thickness of steel tube,elasticity modulus of concrete,and friction coefficient on the bending stiffness are analyzed parametrically by the numerical simulation technology based on an actual *** calculation formula of the equivalent bending stiffness of CFST is also established through mathematical statistical ***,the equivalent bending stiffness is introduced into the construction and use stages of the composite BSS,respectively,and the mechanical properties such as prestress-tensioning control value,structural deformation,and internal force of key members are comparatively analyzed when adopting two different construction ***,the optimal construction plan of concrete placement first and then prestress-tensioning is proposed.

关键词： Concrete panels freeze-thaw damage compression-shear crack tension-shear crack

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