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Primary parenchymal squamous cell carcinoma of the kidney:A case report

World Journal of Clinical Cases 2025年第4期13卷 34-40页

作者： Zhi-Hui Zheng Bo Shao Chao-Min Xu Ke Wang Jia-Zhu Wen Li-kang Luo Jia-Cheng Guan Department of Ultrasound The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Radiology Shulan(Quzhou)HospitalQuzhou 324000Zhejiang ProvinceChina Department of Radiology The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Pathology The Second people’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina

BACKGROUND Primary squamous cell carcinoma(SCC)of the renal parenchyma is extremely rare,with only nine cases *** SUMMARY This study reports a 51-year-old man with primary SCC of the renal *** patient was admitted with recurrent dull pain and discomfort in the right lumbar region,which had worsened over 2 weeks,accompanied by painful gross *** antigen(SCCA)levels were elevated,and imaging revealed a renal mass with associated *** patient underwent laparoscopic unilateral nephrectomy and lymph node *** pathology confirmed highly differentiated SCC with necrosis in the right renal parenchyma,with negative renal pelvis and *** pathological stage was *** months after surgery,the tumor recurred with involvement of the liver,right psoas major muscle,and inferior vena *** patient refused chemotherapy and succumbed to the disease 6 months postoperatively due to disease *** We report a case of primary SCC of the renal parenchyma,a rare renal *** clinical symptoms,laboratory tests,and imaging findings are nonspecific,making accurate and timely diagnosis *** to the literature,for patients with renal calculi accompanied by a renal mass,elevated serum SCCA levels,and magnetic resonance imaging showing cystic or cystic-solid masses within the kidney with pseudocapsules and heterogeneous mild enhancement,the possibility of this disease should be considered.

关键词： Renal tumor Renal parenchyma Squamous cell carcinoma Renal calculi Computed tomography Case report

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AAV-mediated expression of p65shRNA and bone morphogenetic protein 4 synergistically enhances chondrocyte regeneration

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中国组织工程研究 2025年第17期29卷 3537-3547页

作者： Yu Yangyi Song Zhuoyue Lian Qiang Ding kang Li Guangheng Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration Division of Adult Joint Reconstruction and Sports MedicineDepartment of Orthopedic SurgeryShenzhen People’s Hospital(The Second Clinical Medical College Jinan UniversityThe First Affiliated HospitalSouthern University of Science and Technology)Shenzhen 518020Guangdong ProvinceChina Department of Orthopedics Zhengzhou Orthopedics HospitalZhengzhou 450000Henan ProvinceChina Department of Orthopedics Shenzhen Pingle Orthopedics HospitalShenzhen 518000Guangdong ProvinceChina

BACKGROUND:Adeno-associated virus(AAV)gene therapy has been proven to be reliable and safe for the treatment of osteoarthritis in recent ***,given the complexity of osteoarthritis pathogenesis,single gene manipulation for the treatment of osteoarthritis may not produce satisfactory *** studies have shown that nuclear factorκB could promote the inflammatory pathway in osteoarthritic chondrocytes,and bone morphogenetic protein 4(BMP4)could promote cartilage ***:To test whether combined application of AAV-p65shRNA and AAV-BMP4 will yield the synergistic effect on chondrocytes regeneration and osteoarthritis ***:Viral particles containing AAV-p65-shRNA and AAV-BMP4 were *** efficacy in inhibiting inflammation in chondrocytes and promoting chondrogenesis was assessed in vitro and in vivo by transfecting AAV-p65-shRNA or AAV-BMP4 into *** experiments were divided into five groups:PBS group;osteoarthritis group;AAV-BMP4 group;AAV-p65shRNA group;and BMP4-p65shRNA 1:1 *** were collected at 4,12,and 24 weeks *** staining,including safranin O and Alcian blue,was applied after collecting articular ***,the optimal ratio between the two types of transfected viral particles was further investigated to improve the chondrogenic potential of mixed cells in *** AND CONCLUSION:The combined application of AAV-p65shRNA and AAV-BMP4 together showed a synergistic effect on cartilage regeneration and osteoarthritis *** cells transfected with AAV-p65shRNA and AAV-BMP4 at a 1:1 ratio produced the most extracellular matrix synthesis(P<0.05).In vivo results also revealed that the combination of the two viruses had the highest regenerative potential for osteoarthritic cartilage(P<0.05).In the present study,we also discovered that the combined therapy had the maximum effect when the two viruses were administered in equal *** either p65shRNA or BMP4

关键词： osteoarthritis adeno-associated virus bone morphogenetic protein 4 p65-short hairpin RNA gene therapy short hairpin RNA transforming growth factor-β1 extracellular matrix articular cartilage chondrocytes.

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长链非编码RNA通过p38MAPK信号通路直接或间接影响骨质疏松症

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中国组织工程研究 2025年第1期29卷 175-184页

作者：覃浩亢腾刘钢贵州医科大学附属医院临床学院贵州省贵阳市550004 贵州医科大学附属医院骨科贵州省贵阳市550004

背景:近年来大量的研究发现长链非编码RNA参与骨质疏松症的发生和发展。p38MAPK信号通路参与骨髓间充质干细胞、成骨细胞以及破骨细胞的分化等过程而参与骨质疏松症的发展,而长链非编码RNA可通过影响p38MAPK信号通路,直接或间接参与骨... 详细信息

背景:近年来大量的研究发现长链非编码RNA参与骨质疏松症的发生和发展。p38MAPK信号通路参与骨髓间充质干细胞、成骨细胞以及破骨细胞的分化等过程而参与骨质疏松症的发展,而长链非编码RNA可通过影响p38MAPK信号通路,直接或间接参与骨质疏松症的发生及发展过程。目的:综述长链非编码RNA通过p38MAPK信号通路,直接或间接影响骨质疏松症的进展,为长链非编码RNA在骨质疏松症中预防和治疗提供一个新思路。方法:检索PubMed、中国知网和万方数据库的相关文献,以“长链非编码RNA,骨质疏松,间充质干细胞,成骨细胞,破骨细胞,p38信号通路”为中文检索词,以“long non-coding RNA,osteoporosis,mesenchymal stem cells,osteoblasts,osteoclast,p38 signaling pathway”为英文检索词,排除陈旧、重复以及可信度低的观点,将检索到的文献进行归纳、总结和分析,选取76篇具有代表性的文章。结果与结论:(1)长链非编码RNA通过多种途径参与骨质疏松症的防治,包括促进骨髓间充质干细胞的成骨分化、促进成骨细胞分化和成骨细胞分泌活性、抑制破骨细胞增殖和对骨的吸收作用,以及调节成骨相关细胞通路的激活或抑制,激活p38MAPK信号通路延缓骨质疏松症进展,抑制该信号通路抑制破骨细胞的吸收作用,从而影响骨质疏松的发生和发展。(2)相应长链非编码RNA的过表达或低表达会通过p38MAPK信号通路来影响成骨细胞和破骨细胞的增殖或分化,调节骨重塑过程,进而影响骨质疏松症的发生和发展。大量的基础研究结果显示,长链非编码RNA和p38MAPK信号通路或许可以成为骨质疏松症治疗中的潜在应用和临床转化价值;且相应的长链非编码RNA过表达或低表达慢病毒、转染质粒,相应的p38MAPK信号通路抑制剂等在体外细胞实验及动物模型中都被证实有靶向调控作用。(3)因此,通过靶向调控长链非编码RNA和p38MAPK信号通路来调节骨髓间充质干细胞的分化和功能,或通过长链非编码RNA和p38MAPK信号通路来抑制破骨细胞的增殖分化,或许能提供一种创新的治疗策略,可以延缓骨质疏松症的进展。

关键词：骨质疏松长链非编码RNA p38MAPK 间充质干细胞成骨细胞破骨细胞信号通路骨重塑雌激素双膦酸盐

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A survey on neural relation extraction

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Science China(Technological Sciences) 2020年第10期63卷 1971-1989页

作者： LIU kang National Laboratory of Pattern Recognition Institute of AutomationChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Relation extraction is a key task for knowledge graph construction and natural language processing,which aims to extract meaningful relational information between entities from plain *** the development of deep learning,many neural relation extraction models were proposed *** paper introduces a survey on the task of neural relation extraction,including task description,widely used evaluation datasets,metrics,typical methods,challenges and recent research *** mainly focus on four recent research problems:(1)how to learn the semantic representations from the given sentences for the target relation,(2)how to train a neural relation extraction model based on insufficient labeled instances,(3)how to extract relations across sentences or in a document and(4)how to jointly extract relations and corresponding entities?Finally,we give out our conclusion and future research issues.

关键词： knowledge graph relation extraction event extraction and information extraction

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Nonbinary ldpc-coded probabilistic shaping scheme for MIMO systems based on signal space diversity

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Digital Communications and Networks 2023年第3期9卷 779-787页

作者： Weimin kang School of Information and Communication Engineering North University of ChinaTaiyuan030051China

This paper first describes a binary Low-Density Parity-Check(LDPC)-coded Probabilistic Shaping(PS)scheme for Multiple-Input Multiple-Output(MIMO)systems based on Signal Space Diversity(SSD).Second,a Nonbinary(NB)LDPC-coded PS scheme for MIMO systems based on SSD is *** first scheme can be used to obtain a shaping gain,whereas the second can also realize a coding *** theoretical average mutual information of the optimized rotated quadrature amplitude modulation constellations is analyzed and the simulated error per-formance with 22 and 44 MIMO schemes is *** theoretical average mutual information analysis and simulation results show that the proposed NB LDPC-coded PS scheme for MIMO systems based on SSD is reliable and robust,and is therefore suitable for future wireless communication systems.

关键词： Probabilistic shaping Multiple-input multiple-output Signal space diversity Average mutual information

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激光诱导荧光技术与地下水重金属原位检测应用进展

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岩矿测试 2025年第1期44卷 19-34页

作者：毛康薛家奇陈卓张华中国科学院地球化学研究所环境地球化学国家重点实验室贵州贵阳550081

对地下水重金属污染进行现场检测,是快速识别重金属种类和评价污染程度的重要手段。激光诱导荧光技术(LIF)利用特定荧光探针,在目标重金属存在下,通过激光诱导荧光探针产生/猝灭荧光,从而完成对重金属的识别和检测,具有快速甄别地下水... 详细信息

对地下水重金属污染进行现场检测,是快速识别重金属种类和评价污染程度的重要手段。激光诱导荧光技术(LIF)利用特定荧光探针,在目标重金属存在下,通过激光诱导荧光探针产生/猝灭荧光,从而完成对重金属的识别和检测,具有快速甄别地下水重金属污染特性和无损获取其价态的优势。本文在简述LIF检测重金属原理和LIF原位检测地下水重金属装备基础上,重点从荧光探针合成及其在重金属传感检测方法的构建上总结了基于不同荧光探针的LIF现场检测重金属的研究进展。目前可用于重金属检测的荧光探针包括以小分子探针、有机大分子和聚集诱导发光为主的有机荧光探针和以金纳米簇、量子点和金属有机框架材料为代表的纳米荧光探针。这些探针的合成及其对应的传感检测方法的构建表明LIF技术在地下水重金属检测中具有巨大优势。而针对地下水重金属检测的LIF设备研发方面的成果虽不如荧光传感检测方法丰富,但已研制出部分重金属的传感器和检测装备,表现出良好的应用前景。未来研究将会聚焦在地下水重金属主控因子识别和抗干扰技术研发、荧光探针合成与LIF检测方法构建、重金属传感部件和检测装备集成研制,以及检测技术标准化,为后续场地地下水典型重金属LIF检测技术的研究提供参考。

关键词：地下水重金属激光诱导荧光荧光探针现场检测

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直接Z-型BAs/Ga_(2)SO范德华异质结光催化分解水研究

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原子与分子物理学报 2025年第6期42卷 10-16页

作者：许康黄欣杨志红南京邮电大学电子与光学工程学院、柔性电子(未来技术)学院南京210023 南京邮电大学理学院南京210023

基于第一性原理计算,系统研究了BAs/Ga_(2)SO异质结的光催化分解水性能.结果表明:BAs/Ga_(2)SO异质结具有良好的热力学稳定性并表现出交错的能带排列方式,带隙值为0.73 eV,界面处存在从BAs指向Ga_(2)SO的内建电场使其形成了直接Z-型异质... 详细信息

基于第一性原理计算,系统研究了BAs/Ga_(2)SO异质结的光催化分解水性能.结果表明:BAs/Ga_(2)SO异质结具有良好的热力学稳定性并表现出交错的能带排列方式,带隙值为0.73 eV,界面处存在从BAs指向Ga_(2)SO的内建电场使其形成了直接Z-型异质结,能够有效分离光生电子-空穴对.另外,异质结的带边位置可以跨越水的氧化还原电位,析氢反应发生在BAs侧而析氧反应发生在Ga_(2)SO侧.最后,基于吉布斯自由能变化计算,发现在有光照时,析氢和析氧反应在BAs/Ga_(2)SO异质结表面可自发进行.以上结果表明BAs/Ga_(2)SO异质结是有潜力的光催化分解水材料.

关键词：第一性原理计算直接Z型异质结光催化分解水吉布斯自由能

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ADVANCES IN TRANSFORMATION RATCHETING AND RATCHETING-FATIGUE INTERACTION OF NITI SHAPE MEMORY ALLOY

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Acta Mechanica Solida Sinica 2013年第3期26卷 221-236页

作者： Guozheng kang School of Mechanics and Engineering Southwest Jiaotong University

The accumulation of inelastic deformation occurring in NiTi shape memory alloy under the stress-controlled cyclic loading condition is named transformation ratcheting, since it is mainly caused by the solid-solid transformation from austenite to martensite phase and vice versa. The transformation ratcheting and its effect on the fatigue life （i.e., transformation-fatigue interaction） are key issues that should be addressed in order to assess the fatigue of NiTi shape memory alloy more accurately. In this paper, the advances in the studies on the transformation ratcheting and rateheting-fatigue interaction of super-elastic NiTi shape memory alloy in recent years are reviewed： First, experimental observation of the uniaxial transformation ratcheting and ratcheting-fatigue interaction of super-elastic NiTi alloy under the stress-controlled cyclic loading conditions is treated, and the detrimental effect of transformation ratcheting on the fatigue life is addressed; Secondly, two types of cyclic constitutive models （i.e., a macroscopic phenomeno- logical model and a micromechanical one based on crystal plasticity） constructed to describe the transformation ratcheting of super-elastic NiTi alloy are discussed; Furthermore, an energy-based failure model is provided and dealt with by comparing its predicted fatigue lives with experimental ones; Finally, some suggestions about future work are made.

关键词： NiTi shape memory alloy transformation ratcheting constitutive model fatigue,failure model

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Lattice Boltzmann method simulating hemodynamics in the three-dimensional stenosed and recanalized human carotid bifurcations

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Science China(Physics,Mechanics & Astronomy) 2015年第1期58卷 117-124页

作者： kang XiuYing Physics Department Beijing Normal University

By using the lattice Boltzmann method(LBM)pulsatile blood flows were simulated in three-dimensional moderate stenosed and recanalized carotid bifurcations to understand local hemodynamics and its relevance in arterial atherosclerosis formation and *** helical flow patterns,secondary flow and wall dynamical pressure spatiotemporal distributions were investigated,which leads to the disturbed shear forces in the carotid artery *** wall shear stress distributions indicated by time-averaged wall shear stress(TAWSS),oscillatory shear index(OSI),and the relative residence time(RRT)in a cardiac cycle revealed the regions where atherosclerotic plaques are prone to form,extend or *** study also illustrates the point that locally disturbed flow may be considered as an indicator for early atherosclerosis *** the present work demonstrates the robust and highly efficient advantages of the LBM for the hemodynamics study of the human blood vessel system.

关键词： atherosclerosis carotid bifurcation lattice Boltzmann method wall shear stress helical flow pattern

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Effects of Flame Temperature and Absorption Coefficient on Premixed Flame Interactions with Radiation

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Journal of Thermal Science 2021年第3期30卷 1046-1056页

作者： kang Sang Hun Department of Aerospace System Engineering Sejong UniversitySeoul 05006Republic of Korea

The effects of the flame temperature and the absorption coefficient on interactions between radiative heat transfer and the flame behavior were numerically investigated using high-fidelity numerical code with the discrete ordinates *** study the effects of the flame temperature and the absorption coefficient,three different flame temperatures and four different absorption coefficient conditions were selected,so twelve test cases were studied in *** the numerical test results,radiation effects resulted in preheating of the reactant gases and heat loss from the product gases.A higher flame temperature resulted in stronger preheating effects in reactants near the *** to the preheating effects,with the appropriate absorption coefficient,the peak temperature appeared at the flame *** flame temperatures resulted in larger reabsorption effects in the product *** peak temperature at the flame front and the flame speed were influenced by the combined effects of preheating and radiative heat loss at the flame *** on the conditions,due to those effects,the peak temperature and the flame speed could increase or *** the absorption coefficient was sufficiently large,the temperature decrease was reduced in the product zone.

关键词： radiation high-fidelity numerical simulation discrete ordinates method premixed flame

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