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基于液相高分辨质谱联用与核磁共振技术的甘露特钠结构鉴定

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中国药学杂志 2023年第18期58卷 1657-1663页

作者：王悦陈欣桐刘博宋玉娟李俏吟范慧红中国食品药品检定研究院国家药品监督管理局化学药品质量研究与评价重点实验室北京102629

目的建立国家一类新药甘露特钠首批国家标准物质,对标准物质的寡糖结构进行确证。方法采用液质联用、核磁共振等方法确证待标物的结构。液相色谱采用GE Superdex 30 Increase 10/300GL色谱柱对寡糖进行分离,采用负离子模式进行质谱检... 详细信息

目的建立国家一类新药甘露特钠首批国家标准物质,对标准物质的寡糖结构进行确证。方法采用液质联用、核磁共振等方法确证待标物的结构。液相色谱采用GE Superdex 30 Increase 10/300GL色谱柱对寡糖进行分离,采用负离子模式进行质谱检测;采用一维、二维核磁共振技术,对聚甘露糖醛酸、聚古罗糖醛酸及待标物进行结构分析。结果通过对质谱、光谱的分析,确证了甘露特钠待标品是以2~10糖组成的寡糖混合物,分子骨架以甘露糖醛酸为主,与理论结构一致。结论本研究建立了甘露特钠结构确证方法,并对甘露特钠首批对照品的相对分子质量、分子结构进行了确证。

关键词：甘露特钠高分辨质谱核磁共振结构鉴定国家对照品甘露糖醛酸古罗糖醛酸

Impacts of the annual cycle of background SST in the tropical Pacific on the phase and amplitude of ENSO

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 12-17页

作者： song Jiang Congwen Zhu Ning Jiang State Key Laboratory of Severe Weather(LASW) Chinese Academy of Meteorological SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

The dominant annual cycle of sea surface temperature(SST)in the tropical Pacific exhibits an antisymmetric mode,which explains 83.4%total variance,and serves as a background of El Niño-Southern Oscillation(ENSO).However,there is no consensus yet on its anomalous impacts on the phase and amplitude of *** on data during 1982-2022,results show that anomalies of the antisymmetric mode can affect the evolution of ENSO on the interannual scale via Bjerknes feedback,in which the positive(negative)phase of the antisymmetric mode can strengthen El Niño(La Niña)in boreal winter via an earlier(delayed)seasonal cycle transition and larger(smaller)annual *** magnitude of the SST anomalies in the equatorial eastern Pacific can reach more than±0.3◦C,regulated by the changes in the antisymmetric mode based on random sensitivity *** reveal the spatial pattern of the annual cycle associated with the seasonal phase-locking of ENSO evolution and provide new insight into the impact of the annual cycle of background SST on ENSO,which possibly carries important implications for forecasting ENSO.

关键词： Annual cycle SST anomaly Antisymmetric mode ENSO

Constraints on holographic QCD phase transitions from PTA observations

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： song He Li Li Sai Wang Shao-Jiang Wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

Neuronal regulated cell death in aging-related neurodegenerative diseases:key pathways and therapeutic potentials

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Neural Regeneration Research 2025年第8期20卷 2245-2263页

作者： Run song Shiyi Yin Jiannan Wu Junqiang Yan Department of Neurology The First Affiliated HospitalCollege of Clinical Medicine of Henan University of Science and TechnologyLuoyangHenan ProvinceChina Neuromolecular Biology Laboratory The First Affiliated HospitalCollege of Clinical Medicine of Henan University of Science and TechnologyLuoyangHenan ProvinceChina

Regulated cell death(such as apoptosis,necroptosis,pyroptosis,autophagy,cuproptosis,ferroptosis,disulfidptosis)involves complex signaling pathways and molecular effectors,and has been proven to be an important regulatory mechanism for regulating neuronal aging and ***,excessive activation of regulated cell death may lead to the progression of aging-related *** review summarizes recent advances in the understanding of seven forms of regulated cell death in age-related ***,the newly identified ferroptosis and cuproptosis have been implicated in the risk of cognitive impairment and neurodegenerative *** forms of cell death exacerbate disease progression by promoting inflammation,oxidative stress,and pathological protein *** review also provides an overview of key signaling pathways and crosstalk mechanisms among these regulated cell death forms,with a focus on ferroptosis,cuproptosis,and *** instance,FDX1 directly induces cuproptosis by regulating copper ion valency and dihydrolipoamide S-acetyltransferase aggregation,while copper mediates glutathione peroxidase 4 degradation,enhancing ferroptosis ***,inhibiting the Xc-transport system to prevent ferroptosis can increase disulfide formation and shift the NADP^(+)/NADPH ratio,transitioning ferroptosis to *** insights help to uncover the potential connections among these novel regulated cell death forms and differentiate them from traditional regulated cell death *** conclusion,identifying key targets and their crosstalk points among various regulated cell death pathways may aid in developing specific biomarkers to reverse the aging clock and treat age-related neurodegenerative conditions.

关键词： apoptosis autophagy cuproptosis disulfidptosis ferroptosis necroptosis neurodegenerative disease neurological aging diseases PANoptosis pyroptosis

Passive activity enhances residual control ability in patients with complete spinal cord injury

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Neural Regeneration Research 2025年第8期20卷 2337-2347页

作者： Yanqing Xiao Mingming Gao Zejia He Jia Zheng Hongming Bai Jia-Sheng Rao Guiyun song Wei song Xiaoguang Li Beijing Key Laboratory for Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Department of Rehabilitation Evaluation China Rehabilitation Research CenterBeijingChina Cardiac Center Beijing Children’s HospitalCapital Medical UniversityBeijingChina The State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijingChina Department of Rehabilitation Engineering China Rehabilitation Science InstituteBeijingChina

Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury ***,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface *** this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord *** patients with chronic complete thoracic spinal cord injury were *** electromyography data from eight major leg muscles were acquired and compared before and after the passive activity *** results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of *** the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically *** findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.

关键词： complete spinal cord injury cycle training epidural electrical stimulation motor training passive activity physiological state spinal cord circuit surface electromyography volitional control task

Calcium channels caught in peripheral glia’s tug-of-war on axon regeneration in Drosophila

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Neural Regeneration Research 2025年第2期20卷 475-476页

作者： Jackson Powell Tobias Steinschaden Rose Horowitz Yuanquan song Raymond G.Perelman Center for Cellular and Molecular Therapeutics The Children’s Hospital of PhiladelphiaPhiladelphiaPAUSA The Neuroscience Graduate Group University of PennsylvaniaPhiladelphiaPAUSA Department of Pathology and Laboratory Medicine University of PennsylvaniaPhiladelphiaPAUSA Medical University of Vienna Center for Brain ResearchDepartment of NeuroimmunologyViennaAustria

Neural damage or degeneration is at the crux of many diseases,and treatment of these diseases will require the development of therapeutics to enhance and guide neural *** intrinsic and extrinsic factors dictate a neuron’s ability to regenerate,and the combination of these factors results in the great regenerative capacity of the peripheral nervous system(PNS)and the poor regenerative capacity of the central nervous system(CNS)following *** the core of a neuron’s function is its ability to relay electrochemical signals,and a neuron’s excitability is a key factor in its ability to *** works have focused on the changes in neuronal electrophysiological properties,firing patterns,and ion flux after injury,which differentially activate signaling pathways at the core of *** role of glia in neuron regeneration has long been studied.

关键词： degeneration firing system

国产羟乙基淀粉130/0.4注射液质量评价及质量研究

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中国药物警戒 2022年第10期19卷 1067-1072,1090页

作者：王悦宋玉娟刘倩赵湘美邓利娟范慧红中国食品药品检定研究院国家药品监督管理局化学药品质量研究与评价重点实验室北京102629

目的评价国产羟乙基淀粉130/0.4注射液质量现状和存在的问题,为该药品国家标准制修定提供依据。方法对国家抽检的样品进行全项检验,对检验结果进行统计分析,并开展了摩尔取代度、C2/C6比值、相对分子质量与相对分子质量分布、残留溶剂... 详细信息

目的评价国产羟乙基淀粉130/0.4注射液质量现状和存在的问题,为该药品国家标准制修定提供依据。方法对国家抽检的样品进行全项检验,对检验结果进行统计分析,并开展了摩尔取代度、C2/C6比值、相对分子质量与相对分子质量分布、残留溶剂考察等项目的探索性研究工作。结果15个生产厂家的146批样品按照标准检验有6批样品不合格,总体不合格率为4.1%,不合格项目为装量和可见异物。探索性研究发现相对分子质量及其分布方法,部分企业标准中的摩尔取代度、氯化钠测定方法准确度存在问题。结论目前国产羟乙基淀粉130/0.4注射液产品质量状况一般,现行标准多且参差不齐,建议尽快统一和完善质量标准。

关键词：羟乙基淀粉质量评价质量标准相对分子质量相对分子质量分布含量测定摩尔取代度 C2/C6

南京地区护士对姑息护理认知及其态度调查研究

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护理研究 2018年第13期32卷 2103-2106页

作者：宋宇娟武丽桂袁玲郭苗苗吴斌王丹若南京大学医学院南京大学医学院附属鼓楼医院

[目的]调查南京地区不同等级医院护士的姑息护理认知现况,为后期的姑息护理培训提供参考。[方法]采取方便抽样法调查不同等级医院护士共396名,采用一般资料问卷、Ross的姑息护理知识问卷(PCQN)和Bradley的态度问卷。护士一般人口学资料... 详细信息

[目的]调查南京地区不同等级医院护士的姑息护理认知现况,为后期的姑息护理培训提供参考。[方法]采取方便抽样法调查不同等级医院护士共396名,采用一般资料问卷、Ross的姑息护理知识问卷(PCQN)和Bradley的态度问卷。护士一般人口学资料选择描述性统计,PCQN评分和态度评分均选择单因素方差分析,PCQN总分以及各维度与态度总分之间的相关性应用Pearson相关性分析。[结果]南京地区护士的PCQN总分为(10.04±2.37)分,态度总分为(37.28±3.58)分。单因素方差分析显示:不同工龄、科室以及职称护士PCQN总分差异有统计学意义(P<0.05);不同工龄、科室、职称、职务护士态度得分差异有统计学意义(P<0.05)。护士态度评分与PCQN评分存在相关性,而与PCQN各维度评分无相关性。[结论]南京地区护士姑息护理知识掌握情况有待改善,要加强对低工龄、非肿瘤科以及非专科护士知识和态度的培训。

关键词：姑息护理护士知识态度影响因素

Mutual-structure weighted guided image filtering for depth map restoration

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Optoelectronics Letters 2025年第1期21卷 51-56页

作者： LIU Zijian song Jian CHEN Quanmin XU Jiangtao Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology School of Microelectronics Tianjin University Spikesee Technology Co. Ltd.

Although guided image filtering(GIF) is known for preserving edges and fast computation, it may produce inaccurate outputs in depth map restoration. In this paper, a novel confidence-weighted GIF called mutual-structure weighted GIF(MSWGIF) is proposed, which replaces the mean filtering strategy in GIF during handling overlapping windows. The confidence value is composed of a depth term and a mutual-structure term, where the depth term is utilized to protect the edges of the output, and the mutual-structure term helps to select accurate windows during the structure characteristics of the guidance image are transferred to the output. Experimental results show that MSWGIF reduces the root mean square error(RMSE) by an average of 12.37%, and the average growth rate of correlation(CORR) is 0.07% on average. Additionally, the average growth rate of structure similarity index measure(SSIM) is 0.34%.

关键词： Wiener filtering