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Long-term safety and absorption assessment of a novel bioresorbable nitrided iron scaffold in porcine coronary artery

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Bioactive Materials 2022年第11期7卷 496-505页

作者： Jian-Feng Zheng Zi-Wei Xi Yang Li Jia-Nan Li Hong Qiu Xiao-Ying Hu Tong Luo Chao Wu Xin wang Lai-Feng Song Li Li Hai-Ping Qi Gui zhang Li Qin wan-qian zhang Xiao-Li Shi Shu-Han wang De-Yuan zhang Bo Xu Run-Lin Gao Department of Cardiology Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Beijing Key Laboratory of Pre-clinical Research and Evaluation for Cardiovascular Implant Materials Animal Experimental CenterFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Pathology Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina R&D Center Biotyx Medical(Shenzhen)Co.Ltd.ShenzhenChina National and Local Joint Engineering Laboratory of Interventional Medical Biotechnology and System Lifetech Scientific(Shenzhen)Co.Ltd.ShenzhenChina Shen Zhen Testing Center of Medical Devices ShenzhenChina Department of Cardiology and Macrovascular Disease Beijing Tiantan HospitalCapital Medical UniversityBeijingChina

This study aimed to investigate the long-term biocompatibility, safety, and degradation of the ultrathin nitrided iron bioresorbable scaffold (BRS) in vivo, encompassing the whole process of bioresorption in porcine coronary arteries. Fifty-two nitrided iron scaffolds (strut thickness of 70 μm) and 28 Vision Co–Cr stents were randomly implanted into coronary arteries of healthy mini-swine. The efficacy and safety of the nitrided iron scaffold were comparable with those of the Vision stentwithin 52 weeks after implantation. In addition, the long-term biocompatibility, safety, and bioresorption of the nitrided iron scaffold were evaluated by coronary angiog-raphy, optical coherence tomography, micro-computed tomography, scanning electron microscopy, energy dispersive spectrometry and histopathological evaluations at 4, 12, 26, 52 weeks and even at 7 years after im-plantation. In particular, a large number of struts were almost completely absorbed in situ at 7 years follow-up, which were first illustrated in this study. The lymphatic drainage pathway might serve as the potential clearance way of iron and its corrosion products.

关键词： Bioresorbable scaffold Nitrided iron bioresorbable coronary scaffold Preclinical study Completely bioresorbable

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Synergistically enhanced ORR and HER performance on Co-N-C coupled in-situ generated PtCo intermetallic

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Journal of Energy Chemistry 2025年第1期100卷 721-729页

作者： Guanyu Luo Min Song Lulu An Xiao Huang qian zhang Chenhao zhang Tao Shen Shuang wang Deli wang Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology) Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology

Integrating multi-scale sites in a composite catalyst is vital to realize efficient ***,a synergistic composite catalyst consisting of Co atomic sites and in-situ generated PtCo intermetallic compounds （IMCs）(o-PtCo@CoNC) is proposed through Co pre-anchoring and subsequent impregnation-reduction *** loading of Co atoms provides a chance for in-situ generating PtCo ordered intermetallic *** remaining Co single atoms and PtCo IMCs construct synergistic electrocatalytic *** from the ordered structure,synergistic effect of Pt Co IMCs and Co single atoms,o-PtCo@CoNC exhibits excellent electrocatalytic performance for oxygen reduction reaction （ORR） and hydrogen evolution reaction （HER） with mass activity of 1.21 A mgPt-1（at 0.9 V） and5.70 A mgPt-1（at an overpotential of 100 mV）,***,o-PtCo@CoNC delivers negligible loss of half-wave potential and overpotential during long-term stability test in acid solutions,with 13 mV decay after 50,000 potential cycles for ORR and a 2.7 mV decay after 20,000 potential cycles for *** integration strategy of single-atomic sites coupled IMCs paves the way for enhancing the activity and durability of Pt-based electrocatalysts.

关键词： Electrolytic reduction

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Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 509-521页

作者： Xinyuan wang Fan zhang Xingyu Zhou qian wang Changyu Liu Yangyang Liu Hui wang Xiaojie Liu Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（SO4）0.05O2F（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 C current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPS-1//SbSn/NPC full cell demonstrated stable cycling over 200 cycles at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging Sodium-ion battery Fluorophosphate Cathode

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3种淡水育珠蚌碱性磷酸酶（ALP）比较酶学的初步研究

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四川大学学报（自然科学版） 1994年第2期31卷 264-268页

作者：万谦张洪渊中科院上海生化所

分别从三角帆蚌、褶纹冠蚌、背角无齿蚌的外套膜中部分提取了一种碱性磷酸酶（ＡＬＰ），并对这３种来源的ＡＬＰ进行了比活力和动力学性质的比较研究。经过相同提纯步骤后，外套膜ＡＬＰ比活顺序是褶纹冠蚌＞背角无齿蚌＞三角帆蚌；三... 详细信息

分别从三角帆蚌、褶纹冠蚌、背角无齿蚌的外套膜中部分提取了一种碱性磷酸酶（ＡＬＰ），并对这３种来源的ＡＬＰ进行了比活力和动力学性质的比较研究。经过相同提纯步骤后，外套膜ＡＬＰ比活顺序是褶纹冠蚌＞背角无齿蚌＞三角帆蚌；三角帆蚌ＡＬＰ作用于底物磷酸苯二钠的最适ｐＨ值为９．４０，最适温度为３７℃，米氏常数Ｋｍ为０．５３ｍｍｏｌ／Ｌ；褶纹冠蚌ＡＬＰ的最适ｐＨ值为９．１２，最适温度为４０℃，米氏常数Ｋｍ为１．７２ｍｍｏｌ／Ｌ；背角无齿蚌ＡＬＰ的最适ｐＨ值为９．５０，最适温度为４０℃，米氏常数Ｋｍ为０．５７ｍｍｏｌ／Ｌ。３种蚌的ＡＬＰ均为Ｍｇ￣（２＋）、Ｃａ￣（２＋）、Ｂａ￣（２＋）所激活，为Ｃｕ￣（２＋）、Ｚｎ￣（２＋）、ＫＨ＿２ＰＯ＿４、ＭＥ（疏基乙醇）、ＥＤＴＡ－Ｎａ＿２所抑制。

关键词：碱性磷酸酶外套膜蚌比较酶学

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包覆二氧化钛固体脂质微粒的制备研究

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日用化学工业 2017年第4期47卷 212-218页

作者：李玲玉张婉萍张倩洁上海应用技术大学香料香精技术与工程学院上海201418

采用界面复合物生成法制备包覆纳米TiO_2的固体脂质微粒,并对配方进行优化。分别研究了乳化剂硬脂酰谷氨酸钠与脂肪醇聚氧乙烯醚-21的复配比例、固态油脂以及液态油脂的质量分数对包覆纳米TiO_2固体脂质微粒的制备及防晒性能的影响。实... 详细信息

采用界面复合物生成法制备包覆纳米TiO_2的固体脂质微粒,并对配方进行优化。分别研究了乳化剂硬脂酰谷氨酸钠与脂肪醇聚氧乙烯醚-21的复配比例、固态油脂以及液态油脂的质量分数对包覆纳米TiO_2固体脂质微粒的制备及防晒性能的影响。实验结果表明:在纳米TiO_2质量分数为3%的条件下,乳化剂总质量分数为8%,m(硬脂酰谷氨酸钠)∶m(脂肪醇聚氧乙烯醚-21)=2∶1,固态油脂二十二碳醇质量分数为4.5%,液态油脂硅油345质量分数为4.5%时,制备得到的包覆纳米TiO_2固体脂质微粒的平均粒径为219.7nm,PDI=0.221,体系稳定性较好。在纳米TiO_2质量分数不变的前提下,乳化剂复配比例和液态油脂质量分数的变化对包覆纳米TiO_2固体脂质微粒的紫外吸收性能影响较大,固态油脂质量分数的变化影响不大。

关键词：防晒剂固体脂质微粒纳米二氧化钛包覆

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Direct and rapid detection of serum amino acid and monoamine neurotransmitters to assist the diagnosis of panic disorder

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Science China Chemistry 2025年第01期 377-384页

作者： Shiwen Liu Xuerui wan Meng Zhao Jiaqi wang Weilan Wu Linlin You Yonggui Yuan qian Xu Rong Gao Key Laboratory of Environmental Medicine Engineering Ministry of Education School of Public Health Southeast University Key Laboratory of Modern Toxicology of Ministry of Education Department of Hygienic Analysis and Detection School of Public HealthNanjing Medical University Department of Psychosomatics and Psychiatry Zhongda Hospital School of Medicine Southeast University

The measurement of amino acid and monoamine neurotransmitters（NTs） in serum plays a central role in the identification and monitoring of clinical panic disorder（PD）. However, the strong polarity and chemical heterogeneity of NTs make direct extraction and rapid detection extremely challenging. Herein, we developed a strategy that integrated solid phase extraction based on magnetic Fe3O4coated with polydopamine（Fe3O4@PDA） and direct analysis of mass spectrometry in real time（DART-MS） for quantification of 10 NTs. We systematically investigated the optimal conditions of this strategy to achieve good accuracy and precision. Compared with existing magnetic solid phase extraction methods for NTs detection in biological samples, this strategy could adsorb more targets while having similar adsorption efficiencies, and the total process time was reduced by an average of 69.42%. We rapidly determined the metabolic abnormality of 6 types of NTs in the serum of PD patients and demonstrated their diagnostic accuracy. In addition, an outstanding feature of PD in which tryptophan was more metabolized by the KYN pathway and the 5-hydroxytryptamine pathway was inhibited could be elucidated by this strategy. Our results highlighted the potential ability of Fe3O4@PDA coupled with DART-MS to assist in the clinical diagnosis of PD.

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Catalyst–Support Interaction in Polyaniline‑Supported Ni_(3)Fe Oxide to Boost Oxygen Evolution Activities for Rechargeable Zn‑Air Batteries

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Nano-Micro Letters 2025年第1期17卷 176-190页

作者： Xiaohong Zou qian Lu Mingcong Tang Jie Wu Kouer zhang Wenzhi Li Yunxia Hu Xiaomin Xu Xiao zhang Zongping Shao Liang An Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and TechnologyNanjing University of Information Science and TechnologyNanjing 210044People’s Republic of China Department of Chemistry The Chinese University of Hong KongMa Lin BuildingShatinHong Kong SAR 999077People’s Republic of China WA School of Mines:Minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6102Australia Research Institute for Advanced Manufacturing The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China

Catalyst–support interaction plays a crucial role in improving the catalytic activity of oxygen evolution reaction(OER).Here we modulate the catalyst–support interaction in polyaniline-supported Ni_(3)Fe oxide(Ni_(3)Fe oxide/PANI)with a robust hetero-interface,which significantly improves oxygen evolution activities with an overpotential of 270 mV at 10 mA cm^(-2)and specific activity of 2.08 mA cm_(ECSA)^(-2)at overpotential of 300 mV,3.84-fold that of Ni_(3)Fe *** is revealed that the catalyst–support interaction between Ni_(3)Fe oxide and PANI support enhances the Ni–O covalency via the interfacial Ni–N bond,thus promoting the charge and mass transfer on Ni_(3)Fe *** the excellent activity and stability,rechargeable Zn-air batteries with optimum Ni_(3)Fe oxide/PANI are assembled,delivering a low charge voltage of 1.95 V to cycle for 400 h at 10 mA cm^(-2).The regulation of the effect of catalyst–support interaction on catalytic activity provides new possibilities for the future design of highly efficient OER catalysts.

关键词： Catalyst-support interaction Supported catalysts Heterointerface Oxygen evolution reaction Zn-air batteries

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Direct Photolithography of WO_x Nanoparticles for High-Resolution Non-Emissive Displays

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NANO-MICRO LETTERS 2025年第1期17卷 1-13页

作者： Gu, Chang Yang, Guojian wang, Wenxuan Shi, Aiyan Fang, Wenjuan qian, Lei Hu, Xiaofei zhang, Ting Xiang, Chaoyu zhang, Yu-Mo Chinese Acad Sci Ningbo Inst Mat Technol & Engn Lab Optoelect Informat Technol & Devices Ningbo 315201 Peoples R China qianwan Inst CNITECH Hangzhou Bay Lab Adv Nanooptoelectron Mat & Device Ningbo 315336 Peoples R China Zhejiang Univ Innovat Ctr Yangtze River Delta Smart Mat Architecture Res Lab Jiaxing 314100 Peoples R China Univ Sci & Technol China Hefei 230026 Peoples R China Jilin Univ Coll Chem State Key Lab Supramol Struct & Mat Changchun 130012 Peoples R China

High-resolution non-emissive displays based on electrochromic tungsten oxides (WOx) are crucial for future near-eye virtual/augmented reality interactions, given their impressive attributes such as high environmental stability, ideal outdoor readability, and low energy consumption. However, the limited intrinsic structure of inorganic materials has presented a significant challenge in achieving precise patterning/pixelation at the micron scale. Here, we successfully developed the direct photolithography for WOx nanoparticles based on in situ photo-induced ligand exchange. This strategy enabled us to achieve ultra-high resolution efficiently (line width m, the best resolution for reported inorganic electrochromic materials). Additionally, the resulting device exhibited impressive electrochromic performance, such as fast response ( 3600 cycles), as well as promising applications in electronic logos, pixelated displays, flexible electronics, etc. The success and advancements presented here are expected to inspire and accelerate research and development (R&D) in high-resolution non-emissive displays and other ultra-fine micro-electronics.

关键词： Electrochromic Direct photolithography WOx nanoparticles In situ photo-induced ligand exchange High-resolution displays

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光纤CDMA系统中光编解码器的优化设计方法

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通信学报 2002年第2期23卷 66-71页

作者：刘忠英万谦张宝富解放军理工大学通信工程学院江苏南京210016

本文从影响光编解码器性能的诸多因素中首次给出了优化因子——最佳耦合系数的定义,并考虑实际应用推导了优化因子方程,其正确性得到了理论和实验两方面的验证。

关键词：光编解码器光纤通信码分多址系统

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Mutual regulation of microglia and astrocytes after Gas6 inhibits spinal cord injury

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Neural Regeneration Research 2025年第2期20卷 557-573页

作者： Jiewen Chen Xiaolin Zeng Le wang Wenwu zhang Gang Li Xing Cheng Peiqiang Su Yong wan Xiang Li Department of Spine Surgery The First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Guangdong Province Key Laboratory of Orthopedics and Traumatology GuangzhouGuangdong ProvinceChina

Invasive inflammation and excessive scar formation are the main reasons for the difficulty in repairing nervous tissue after spinal cord *** and astrocytes play key roles in the spinal cord injury micro-environment and share a close ***,the mechanisms involved remain *** this study,we found that after spinal cord injury,resting microglia(M0)were polarized into pro-inflammatory phenotypes(MG1 and MG3),while resting astrocytes were polarized into reactive and scar-forming *** expression of growth arrest-specific 6(Gas6)and its receptor Axl were significantly down-regulated in microglia and astrocytes after spinal cord *** vitro experiments showed that Gas6 had negative effects on the polarization of reactive astrocytes and pro-inflammatory microglia,and even inhibited the cross-regulation between *** further demonstrated that Gas6 can inhibit the polarization of reactive astrocytes by suppressing the activation of the Yes-associated protein signaling ***,in turn,inhibited the polarization of pro-inflammatory microglia by suppressing the activation of the nuclear factor-κB/p65 and Janus kinase/signal transducer and activator of transcription signaling *** vivo experiments showed that Gas6 inhibited the polarization of pro-inflammatory microglia and reactive astrocytes in the injured spinal cord,thereby promoting tissue repair and motor function ***,Gas6 may play a role in the treatment of spinal cord *** can inhibit the inflammatory pathway of microglia and polarization of astrocytes,attenuate the interaction between microglia and astrocytes in the inflammatory microenvironment,and thereby alleviate local inflammation and reduce scar formation in the spinal cord.

关键词： astrocytes Axl cell polarization Gas6 Hippo signal inflammatory micro-environment intercellular interaction microglia single-cell sequencing spinal cord injury

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