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双能C T联合临床病理特征预测结直肠癌Ki-67表达的价值

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中国CT和MRI杂志 2024年第2期22卷 142-145页

作者：朱文玲李雨蒙岳思宇陈新蕾邱慎满李绍东徐州医科大学附属医院影像科江苏徐州221002 徐州医科大学医学影像学院江苏徐州221002

目的探讨双能量CT(DECT)定量参数联合临床病理特征预测结直肠癌(CRC)增殖抗原Ki-67阳性表达的价值。方法回顾性收集行腹盆腔DECT双期增强检查且经手术病理证实的123例结直肠腺癌患者术前影像学资料及临床病理资料。根据术后病理结果将Ki... 详细信息

目的探讨双能量CT(DECT)定量参数联合临床病理特征预测结直肠癌(CRC)增殖抗原Ki-67阳性表达的价值。方法回顾性收集行腹盆腔DECT双期增强检查且经手术病理证实的123例结直肠腺癌患者术前影像学资料及临床病理资料。根据术后病理结果将Ki-67分为高表达和低表达两组。利用siemens工作站进行图像后处理,获得入组患者动脉期和静脉期的碘浓度(IC)、标准化碘浓度(NIC)及能谱曲线斜率(λHU)。采用χ^(2)检验比较两组间临床病理资料的差异。采用独立样本t检验/Mann-Whitney U检验比较两组间能谱参数的差异;采用受试者工作特征曲线(ROC)评估有统计学意义的参数的预测效能。结果结直肠癌Ki-67高表达组和低表达组之间血清CA199水平差异有统计学意义(χ^(2)=5.559,P<0.05)。Ki-67高表达组双期IC值、NIC值及能谱曲线斜率均高于Ki-67低表达组,差异具有统计学意义(P<0.05)。结论DECT定量参数IC、NIC、λHU及血清CA199可在一定程度上反映结直肠癌细胞增殖程度,预测结直肠癌Ki-67阳性表达的水平。

关键词：结直肠癌双能量CT 肿瘤标记物 Ki-67表达

Quantum Spin Exchange Interactions to Accelerate the Redox Kinetics in Li–S Batteries

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Nano-Micro Letters 2024年第5期16卷 370-383页

作者： yu Du Weijie Chen yu Wang yue yu Kai Guo Gan Qu Jianan Zhang Key Laboratory of Advanced Energy Catalytic and Functional Materials Preparation of Zhengzhou City College of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001People’s Republic of China

Spin-engineering with electrocatalysts have been exploited to suppress the“shuttle effect”in Li–S batteries.Spin selec-tion,spin-dependent electron mobility and spin potentials in activation barriers can be optimized as quantum spin exchange interactions lead-ing to a significant reduction of the electronic repulsions in the orbitals of catalysts.Herein,we anchor the MgPc molecules on fluorinated carbon nanotubes(MgPc@FCNT),which exhibits the single active Mg sites with axial displacement.According to the density functional theory calculations,the electronic spin polarization in MgPc@FCNT not only increases the adsorption energy toward LiPSs intermediates but also facilitates the tunneling process of electron in Li–S batter-ies.As a result,the MgPc@FCNT provides an initial capacity of 6.1 mAh cm^(-2) even when the high sulfur loading is 4.5 mg cm^(-2),and still maintains 5.1 mAh cm^(-2) after 100 cycles.This work provides a new perspective to extend the main group single-atom catalysts enabling high-performance Li–S batteries.

关键词： Metal phthalocyanines Spin polarization Electrocatalysis Li–S batteries

Can serum immunoglobulin G4 levels and age serve as reliable predictors of relapse in autoimmune pancreatitis?

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World Journal of Gastroenterology 2024年第5期30卷 512-515页

作者： Jun-Min Song si-yu Sun Department of Gastroenterology Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina

We are writing in response to the paper published in the World Journal of Gastroenterology by Zhou et al.The authors identified higher serum immunoglobulin(Ig)G4 levels and age over 55 years as independent risk factors for disease relapse.Despite notable strengths,it is crucial to address potential biases.Firstly,the cohort study included 189 patients with autoimmune pancreatitis(AIP)type 1(with higher IgG4 seropositivity and higher relapse)and 24 with type 2(with lower IgG4 seropositivity and lower relapse).Consequently,most,if not all,AIP type 2 patients were assigned to the normal group,possibly inflating the association of higher serum IgG4 levels with relapse and potentially exaggerating the association of older age with relapse.Secondly,the authors did not provide sufficient details regarding AIP diagnosis,such as the ratio of definitive vs probable cases and the proportion of biopsies.In cases where histological evidence is unavailable or indeterminate,AIP type 2 may be misdiagnosed as definitive type 1,and type 1 may also be misdiagnosed as probable type 2,particularly in cases with normal or mildly elevated serum IgG4 levels.Lastly,in this retrospective study,approximately one-third of the consecutive patients initially collected were excluded for various reasons.Accordingly,the impact of nonrandom exclusion on relapse outcomes should be carefully considered.In conclusion,the paper by Zhou et al offers plausible,though not entirely compelling,evidence suggesting a predictive role of elevated serum IgG4 levels and advanced age in AIP relapse.The foundation for future investigations lies in ensuring a reliable diagnosis and accurate disease subtyping,heavily dependent on obtaining histological specimens.In this regard,endoscopic ultrasound-guided fine-needle biopsy emerges as a pivotal component of the diagnostic process,contributing to mitigating biases in future explorations of the disease.

关键词： Autoimmune pancreatitis Immunoglobulin Endoscopic ultrasound Relapse Age

Improved photocatalytic performance of acetaldehyde degradation via crystal plane regulation on truncated octahedral CeO2

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Rare Metals 2024年第5期43卷 2026-2038页

作者： Bin Xu Lu Jia Hui Yang yue Wang si-yu Fan Sai-Sai yuan Qi-Tao Zhang Ming Zhang Teruhisa Ohno School of Chemistry and Chemical Engineering Yangzhou University College of Environmental Science and Engineering Yangzhou University Department of Applied Chemistry Faculty of EngineeringKyushu Institute of Technology School of Environmental and Chemical Engineering Jiangsu University of Science and Technology National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of Technology School of Materials Science and Engineering Henan University of Science and Technology International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale Optoelectronics Shenzhen University

In this study,the truncated octahedral Ce O2（Ce O2-to） with special morphology was prepared by the solvothermal method with oleic acid （OA） and oleamine（OM） as the morphology-directing agents.High-resolution transmission electron microscopy （HRTEM） results show that Ce O2-to exposes composite{100}and{111}facets,while Ce O2cubic （Ce O2-c） and Ce O2octahedral （Ce O2-o）only expose single crystal facets of{100}plane and{111}plane,respectively.Interestingly,this Ce O2-to photocatalyst exhibits remarkable photooxidation performance of gaseous acetaldehyde （CH3CHO） degradation,in which CO2generation value reaches 1.78 and 7.97-times greater than that of Ce O2-c and Ce O2-o,respectively.In addition,the active species trapping experiment signifies that superoxide （·O2-） and holes （h+） are the main reactive substances during the CH3CHO degradation process,and the electron paramagnetic resonance （EPR） spectra indicates that the former is the major contributor.Notably,the electron transfer mechanism between Ce O2-to{100}and{111}facets and the surface oxygen adsorption ability are revealed via density functional theory （DFT） calculations.It is also confirmed that{100}facets are more conducive to the absorption of acetaldehyde than{111}facets.Finally,a reasonable mechanism for improved photocatalytic CH3CHO degradation on Ce O2-to is proposed based on relevant experiments and DFT calculations.This study demonstrates that the systematic development of surface homojunction structured photocatalysts can efficiently increase the degradation activity for volatile organic compounds （VOCs）.It also offers additional direction for optimizing the photocatalytic activity of other ceriumbased photocatalysts.

关键词： Truncated octahedral CeO 2 (CeO 2 -to) Composite crystal faces Surface energy level Efficient electron transfer

Hybrid pedestrian positioning system using wearable inertial sensors and ultrasonic ranging

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Defence Technology（防务技术） 2024年第3期33卷 327-338页

作者： Lin Qi yu Liu Chuanshun Gao Tao Feng yue yu School of Communication and Information Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China Department of Land Surveying and Geo-Informatics The Hong Kong Polytechnic UniversityHong Kong 999077China

Pedestrian positioning system(PPS)using wearable inertial sensors has wide applications towards various emerging fields such as smart healthcare,emergency rescue,soldier positioning,etc.The performance of traditional PPS is limited by the cumulative error of inertial sensors,complex motion modes of pedestrians,and the low robustness of the multi-sensor collaboration structure.This paper presents a hybrid pedestrian positioning system using the combination of wearable inertial sensors and ultrasonic ranging(H-PPS).A robust two nodes integration structure is developed to adaptively combine the motion data acquired from the single waist-mounted and foot-mounted node,and enhanced by a novel ellipsoid constraint model.In addition,a deep-learning-based walking speed estimator is proposed by considering all the motion features provided by different nodes,which effectively reduces the cumulative error originating from inertial sensors.Finally,a comprehensive data and model dual-driven model is presented to effectively combine the motion data provided by different sensor nodes and walking speed estimator,and multi-level constraints are extracted to further improve the performance of the overall system.Experimental results indicate that the proposed H-PPS significantly improves the performance of the single PPS and outperforms existing algorithms in accuracy index under complex indoor scenarios.

关键词： Pedestrian positioning system Wearable inertial sensors Ultrasonic ranging Deep-learning Data and model dual-driven

Parallel Light Fields: A Perspective and A Framework

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IEEE/CAA Journal of Automatica sinica 2024年第2期11卷 542-544页

作者： Fei-yue Wang yu Shen IEEE State Key Laboratory for Management and Control of Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China School of Artificial Intelligence University of Chinese Academy of ScienceBeijing 100049

Dear Editor,Light fields give relatively complete description of scenes from perspective of angles and positions of rays. At present time, most of the computer vision algorithms take 2D images as input which are simplified expression of light fields with depth information discarded. In theory, computer vision tasks may achieve better performance as long as complete light fields are acquired.

关键词： computer Framework simplified

Preoperative serum cortisone levels are associated with cognition in preschool‑aged children with tetralogy of Fallot after corrective surgery:new evidence from human populations and mice

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World Journal of Pediatrics 2024年第2期20卷 173-184页

作者： si-yu Ma yu-Ting Liu yue-Shuang Cun Qiang Wang Ming-Cui Fu Ke-De Wu Xin-yu Cai Shu-Ting Cheng Nishant Patel Min Da Liang Hu Zhuoga Deqin Xue-Jun Kang Ming Yang Xu-Ming Mo Department of Cardiothoracic Surgery Children’s Hospital of Nanjing Medical University72 Guangzhou RoadNanjing 210008China Department of Radiology Children’s Hospital of Nanjing Medical University72 Guangzhou RoadNanjing 210008China Key Laboratory of Child Development and Learning Science Research Center For Learning ScienceSchool of Biological Sciences&Medical EngineeringMinistry of EducationSoutheast UniversityNanjing 210096China Medical School of Nanjing University Nanjing 210093China

Background Tetralogy of Fallot(TOF)is the most common cyanotic congenital heart disease.Children with TOF would be confronted with neurological impairment across their lifetime.Our study aimed to identify the risk factors for cerebral morphology changes and cognition in postoperative preschool-aged children with TOF.Methods We used mass spectrometry(MS)technology to assess the levels of serum metabolites,Wechsler preschool and primary scale of intelligence-Fourth edition(WPPsi-Ⅳ)index scores to evaluate neurodevelopmental levels and multimodal magnetic resonance imaging(MRI)to detect cortical morphological changes.Results Multiple linear regression showed that preoperative levels of serum cortisone were positively correlated with the gyrification index of the left inferior parietal gyrus in children with TOF and negatively related to their lower visual spaces index and nonverbal index.Meanwhile,preoperative SpO_(2) was negatively correlated with levels of serum cortisone after adjusting for all covariates.Furthermore,after intervening levels of cortisone in chronic hypoxic model mice,total brain volumes were reduced at both postnatal(P)11.5 and P30 days.Conclusions Our results suggest that preoperative serum cortisone levels could be used as a biomarker of neurodevelopmental impairment in children with TOF.Our study findings emphasized that preoperative levels of cortisone could influence cerebral development and cognition abilities in children with TOF.

关键词： Cognition Cortisone MRI Neurodevelopment Tetralogy of Fallot

Gut microbiota and female health

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World Journal of Gastroenterology 2024年第12期30卷 1655-1662页

作者： Meng-Yao Wang Li-Xuan Sang si-yu Sun Department of Gastroenterology Shengjing Hospital of China Medical UniversityShenyang 110022Liaoning ProvinceChina Department of Gastroenterology Endoscopic CenterEngineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic TechniquesShengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina

The gut microbiota is recognized as an endocrine organ with the capacity to influence distant organs and associated biological pathways.Recent advan-cements underscore the critical role of gut microbial homeostasis in female health;with dysbiosis potentially leading to diseases among women such as polycystic ovarian syndrome,endometriosis,breast cancer,cervical cancer,and ovarian cancer etc.Despite this,there has been limited discussion on the underlying mechanisms.This editorial explores the three potential mechanisms through which gut microbiota dysbiosis may impact the development of diseases among women,namely,the immune system,the gut microbiota-estrogen axis,and the metabolite pathway.We focused on approaches for treating diseases in women by addressing gut microbiota imbalances through probiotics,prebiotics supple-mentation,and fecal microbiota transplantation(FMT).Future studies should focus on determining the molecular mechanisms underlying associations between dysbiosis of gut microbiota and female diseases to realize precision medicine,with FMT emerging as a promising intervention.

关键词： Gut microbiota Female health Estrogen Polycystic ovarian syndrome Endometriosis

Free amino group-directed C(sp^(2))-H arylation ofα-amino-β-aryl esters by palladium catalysis

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Chinese Chemical Letters 2024年第2期35卷 358-360页

作者： yue Gao yu Du Weiping Su State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China University of Chinese Academy of Sciences Beijing 100049China

Native amino-directed palladium-catalyzed C(sp^(3))-H activation/functionalization has been developed for modification ofα-amino acids and peptides.Herein a palladium(Ⅱ)-catalyzed C(sp^(2))-H arylation ofα-amino-β-aryl esters has been disclosed,using the native amino as the directing group.A variety of chiralα-amino-β-aryl esters can be functionalized to give the corresponding ortho-substituted mono-and di-arylated products.

关键词： Native amino-directed Palladium catalyst C(sp^(2))-H arylation α-Amino-β-aryl ester Chiralα-amino acid