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基于图拉普拉斯正则化的PET图像核重建方法

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电子学报 2024年第1期52卷 118-128页

作者：盛玉霞孙坤柴利武汉科技大学信息科学与工程学院湖北武汉430081 浙江大学控制科学与工程学院浙江杭州310027

正电子发射断层成像(Positron Emission Tomography,PET)在很多疾病的早期诊断中有重要的作用,PET图像重建的难点之一是如何在保持重建图像中病灶边缘特性的同时具有良好的去噪性能.针对此问题,本文提出了一种结合图拉普拉斯正则化和深... 详细信息

正电子发射断层成像(Positron Emission Tomography,PET)在很多疾病的早期诊断中有重要的作用,PET图像重建的难点之一是如何在保持重建图像中病灶边缘特性的同时具有良好的去噪性能.针对此问题,本文提出了一种结合图拉普拉斯正则化和深度图像先验的PET图像核重建方法 .设计了改进的U-net神经网络,将PET前向投影模型中的核系数表示为神经网络的输出;通过先验图像构建图拉普拉斯矩阵,重建问题被建模为基于神经网络的带图拉普拉斯正则化项的最大似然函数优化问题.利用优化转移方法导出了收敛的迭代重建算法,每一次迭代包括由核重建方法更新图像和利用神经网络更新核系数两个步骤.仿真和临床实验结果表明,本文提出的方法在不同的指标下都有更好的重建效果,优于已有核重建方法以及最新的基于深度系数先验的重建方法 .

关键词： PET 图像重建核方法深度图像先验图拉普拉斯正则化

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A modified back analysis method for deep excavation with multi-objective optimization procedure

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第4期16卷 1373-1387页

作者： Chenyang Zhao Le Chen Pengpeng Ni Wenjun xia Bin Wang State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China Guangdong Research Center for Underground Space Exploitation Technology School of Civil EngineeringSun Yat-sen UniversityGuangzhou510275China Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Zhuhai519000China Jiangsu Provincial Transportation Engineering Construction Bureau Nanjing210004China

Real-time prediction of excavation-induced displacement of retaining pile during the deep excavation process is crucial for construction *** paper proposes a modified back analysis method with multi-objective optimization procedure,which enables a real-time prediction of horizontal displacement of retaining pile during *** opposed to the traditional stage-by-stage back analysis,time series monitoring data till the current excavation stage are utilized to form a multi-objective ***,the multi-objective particle swarm optimization (MOPSO) algorithm is applied for parameter *** optimized model parameters are immediately adopted to predict the excavation-induced pile deformation in the continuous construction *** achieve efficient parameter optimization and real-time prediction of system behavior,the back propagation neural network (BPNN) is established to substitute the finite element model,which is further implemented together with MOPSO for automatic *** proposed approach is applied in the Taihu tunnel excavation project,where the effectiveness of the method is demonstrated via the comparisons with the site monitoring *** method is reliable with a prediction accuracy of more than 90%.Moreover,different optimization algorithms,including non-dominated sorting genetic algorithm (NSGA-II),Pareto Envelope-based Selection Algorithm II (PESA-II) and MOPSO,are compared,and their influences on the prediction accuracy at different excavation stages are *** results show that MOPSO has the best performance for high dimensional optimization task.

关键词： Multi-objective optimization Back analysis Surrogate model Multi-objective particle swarm optimization(MOPSO) Deep excavation

低血糖生成指数饮食在2型糖尿病营养管理中的研究进展及应用现状

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食品科学 2024年第11期45卷 343-350页

作者：李蔼琪夏惠孙桂菊东南大学公共卫生学院环境医学工程教育部重点实验室江苏南京210009

血糖生成指数(glycemic index,GI)小于等于55的食品被称为低GI食品。低GI饮食是指一种饮食模式,该膳食模式中主要选择低GI食物,并注意调整烹调方式以控制膳食中整体的GI值。在糖尿病营养管理中应用低GI饮食干预有助于稳定糖尿病患者的... 详细信息

血糖生成指数(glycemic index,GI)小于等于55的食品被称为低GI食品。低GI饮食是指一种饮食模式,该膳食模式中主要选择低GI食物,并注意调整烹调方式以控制膳食中整体的GI值。在糖尿病营养管理中应用低GI饮食干预有助于稳定糖尿病患者的餐后血糖,提高饱腹感并减少血糖波动。本文系统综述了低GI饮食模式在糖尿病营养管理中的应用情况,阐述了影响膳食中GI值的因素,探讨了低GI食品的种类及其开发现况,进一步展望了构建低GI饮食模式中食品的未来发展趋势,并分析和提出了低GI食品未来的研究方向和潜在的挑战。

关键词：低血糖生成指数食物血糖生成指数 2型糖尿病营养管理血糖管理

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Analysis on Genetic Diversity of 40 Flowering Cherry Cultivars and Construction of Molecular ID Based on SSR Markers

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Agricultural Sciences 2024年第2期15卷 256-273页

作者： Chaoren Nie xiaoguo Xu xiaoqin Zhang hongbing sun Jingya Yu Wensheng xia Wuhan Institute of Landscape Architecture Wuhan China Wuhan Landscape Ecology Group Co. Ltd. Wuhan China

Studying on the genetic diversity and genetic relationship of flowering cherry cultivars is extremely important for germplasm conservation, cultivar identification and breeding. Flowering cherry is widely cultivated as an important woody ornamental plant in worldwide, especially Japan, China. However, owning to the morphological similarity, many cultivars are distinguished hardly in non-flowering season. Here, we evaluated the genetic diversity and genetic relationship of 40 flowering cherry cultivars, which are mainly cultivated in China. We selected 13 polymorphicprimers to amplify to allele fragments with fluorescent-labeled capillary electrophoresis technology. The population structure analysis results show that these cultivars could be divided into 4 subpopulations. At the population level, Na and Ne were 6.062, 4.326, respectively. Ho and He were 0.458 and 0.670, respectively. The Shannon’s information index (I) was 1.417. The Pop3, which originated from P. serrulata, had the highest Ho, He, and I among the 4 subpopulations. AMOVA showed that only 4% of genetic variation came from populations, the 39% variation came from individuals and 57% (p < 0.05) came from intra-individuals. 5 polymorphic SSR primers were selected to construct molecular ID code system of these cultivars. This analysis on the genetic diversity and relationship of the 40 flowering cherry cultivars will help to insight into the genetic background, relationship of these flowering cherry cultivars and promote to identify similar cultivars.

关键词： Flowering Cherry SSR Genetic Relationship Molecular ID Identifying Cultivars

Effects of probiotics， prebiotics and synbiotics supplementation on cardiovascular risk factors in patients with type 2 diabetes mellitus: a GRADE-assessed systematic review and meta-analysis of randomized controlled trials

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Food Science and Human Wellness 2024年

作者： Yanyan Tian Jiayue xia Lihua Li Ligang Yang Hua xiao Guoping Gao Yuanyuan Wang Chen Zhang Tiange Bu Guiju sun Department of Nutritional Sciences University of Toronto Key Laboratory of Environmental Medicine and Engineering of Ministry of Education Department of Nutrition and Food Hygiene School of Public Health Southeast University Lianshui People's Hospital Affiliated to Kangda College of Nanjing Medical University Gong'an County People's Hospital

A systematic review and meta-analysis study was conducted to assess the effectiveness of probiotic/prebiotic/synbiotic supplementation on the effects of cardiovascular risk factors in patients with type 2 diabetes mellitus (T2DM) based on data from randomized controlled trials (RCTs). We searched electronic databases including PubMed， Cochrane Library， Embase， and Web of Science to identify clinical trials published up to 31 March 2023. Data was pooled using a random-effects model if significant heterogeneity (I2> 50%)， otherwise use a fixed-effects model. Fifty-six trials that included 3 317 patients were enrolled for analysis. Meta-analysis reported that probiotic/prebiotic/synbiotic supplementation significantly reduced systolic blood pressure (SBP) (weighted mean difference (WMD): -3.57 mmHg， 95% confidence interval (CI): -5.36， -1.78; P = 0.000)， diastolic blood pressure (DBP) (WMD: -2.05 mmHg， 95% CI: -3.07， -1.04; P = 0.000)， triglycerides (TG) (WMD: -16.10 mg/dL， 95% CI: -20.16， -12.05; P = 0.000)， total cholesterol (TC) (WMD: -14.00 mg/dL， 95% CI: -20.46， -7.55; P = 0.000)， low-density lipoprotein cholesterol (LDL-C) (WMD: -7.03 mg/dL， 95% CI: -9.25， -4.81; P = 0.000)， fasting plasma glucose (FPG) (WMD: -16.57 mg/dL， 95% CI: -20.39， -12.74; P = 0.000)， hemoglobin A1c (HbA1c) (WMD: -0.44%， 95% CI: -0.68， -0.20; P = 0.000)， insulin (standardized mean difference (SMD): -0.37， 95% CI: -0.53， -0.21; P = 0.000)， homeostatic model assessment of insulin resistance (HOMA-IR) (WMD: -1.05， 95% CI: -1.56， -0.54; P = 0.000)， C-reactive protein (CRP) (SMD: -0.35， 95% CI: -0.57， -0.13; P = 0.002)， tumor necrosis factor-α (TNF-α) (SMD: -1.07， 95% CI: -1.57， -0.56; P = 0.000)， interleukin-6 (IL-6) (SMD: -0.37 ， 95% CI: -0.61， -0.13; P = 0.003) levels， they also increased the high-density lipoprotein cholesterol (HDL-C) (WMD: 3.70 mg/dL， 95% CI: 1.80， 5.60; P = 0.000) levels in T2DM patients， as compared to the placebo groups. This meta-analysis supports the use of probiotic

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GhWDL3 is involved in the formation and development of fiber cell morphology in upland cotton(Gossypium hirsutum L.)

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Journal of Cotton Research 2024年第1期7卷 58-68页

作者： CHEN Baojun TIAN Zailong FU Guoyong ZHANG Ai sun Yaru WANG Jingjing PAN Zhaoe LI hongge HU Daowu xia Yingying HE Shoupu DU Xiongming Zhengzhou Research Base National Key Laboratory of Cotton Bio-Breeding and Integrated UtilizationZhengzhou UniversityZhengzhouHenan 450001China National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangHenan 455000China National Supercomputing Center in Zhengzhou Zhengzhou UniversityZhengzhouHenan 450001China

Background Cotton fiber is a model tissue for studying microtubule-associated proteins(MAPs).The Xklp2(TPX2)proteins that belong to the novel MAPs member mainly participate in the formation and development of microtubule(MT).However,there is a lack of studies concerning the systematic characterization of the TPX2 genes family in ***,the identification and portrayal of *** TPX2 genes can provide key targets for molecular manipula-tion in the breeding of cotton fiber *** In this study,TPX2 family genes were classified into two distinct subclasses TPXLs and MAP genes WAVE DAMP-ENED2-LIKE(WDLs)and quite conservative in ***3 was significantly up-regulated in 15 days post anthe-sis fibers of ZRI-015(an upland cotton with longer and stronger fiber).GhWDL3 promotes all stem hairs to become straight when overexpressed in Arabidopsis,which may indirectly regulate cotton fiber cell morphology during fiber *** induced gene silencing(VIGS)results showed that GhWDL3 inhibited fiber cell elongation at fiber development periods through regulating the expression of cell wall related *** These results reveal that GhWDL3 regulated cotton fiber cell elongation and provide crucial information for the further investigation in the regulatory mechanisms/networks of cotton fiber length.

关键词： Upland cotton GhWDL3 Fiber length TPX2 Cytoskeleton Microtubule-associated proteins(MAPs)

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Integrated proteomic profiling identifies amino acids selectively cytotoxic to pancreatic cancer cells

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The Innovation 2024年第3期5卷 138-145页

作者： Alfred Akinlalu Zachariah Flaten Komila Rasuleva Md Saimon Mia Aaron Bauer Santhalingam Elamurugan Nega Ejjigu Sudipa Maity Amara Arshad Min Wu Wenjie xia Jia Fan Ang Guo Sijo Mathew Dali sun Department of Electrical and Computer Engineering University of Denver2155 E Wesley AvenueDenverCO 80210USA Biomedical Engineering Program North Dakota State University1401 Centennial BoulevardEngineering AdministrationRoom 203FargoND 58102USA Department of Pharmaceutical Sciences School of PharmacyNorth Dakota State University1001 S.1401 Albrecht Boulevard Sudro HallFargoND 58102USA Materials and Nanotechnology Program North Dakota State University1410 North 14th AvenueCIE 201FargoND 58102USA Wenzhou Institute University of Chinese Academy of SciencesWenzhouZhejiang 325000China Department of Aerospace Engineering Iowa State UniversityAmesIA 50011USA Center for Cellular and Molecular Diagnostics Tulane University School of Medicine1430 Tulane AvenueNew OrleansLA 70112USA Department of Biochemistry and Molecular Biology Tulane University School of Medicine1430 Tulane AvenueNew OrleansLA 70112USA Knoebel Institute for Healthy Aging University of Denver2155 E Wesley AvenueDenverCO 80210USA

Pancreatic adenocarcinoma(PDAC)is one of the most deadly cancers,characterized by extremely limited therapeutic options and a poor prognosis,as it is often diagnosed during late disease *** and selective treatments are urgently needed,since current therapies have limited efficacy and significant side *** proteomics analysis of extracellular vesicles,we discovered an imbalanced distribution of amino acids secreted by PDAC tumor *** findings revealed that PDAC cells preferentially excrete proteins with certain preferential amino acids,including isoleucine and histidine,via extracellular *** amino acids are associated with disease progression and can be targeted to elicit selective toxicity to PDAC tumor *** in vitro and in vivo experiments demonstrated that supplementation with these specific amino acids effectively eradicated PDAC ***,we also identified XRN1 as a potential target for these amino *** high selectivity of this treatment method allows for specific targeting of tumor metabolism with very low toxicity to normal ***,we found this treatment approach is easy-to-administer and with sustained tumor-killing ***,our findings reveal that exocytosed amino acids may serve as therapeutic targets for designing treatments of intractable PDAC and potentially offer alternative treatments for other types of cancers.

关键词： finding identif selectivity

Penpulimab,an anti-PD-1 antibody,for heavily pretreated metastatic nasopharyngeal carcinoma:a single-arm phase II study

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Signal Transduction and Targeted Therapy 2024年第7期9卷 3056-3062页

作者： xiaozhong Chen Wei Wang Qingfeng Zou xiaodong Zhu Qin Lin Yi Jiang Yan sun Liangfang Shen Lin Wang Guorong Zou xiaoyan Lin Shaojun Lin Minying Li Ying Wang Ruilian Xu Rui Ao Rensheng Wang Haifeng Lin Shuang Huang Tingting Xu Wenting Li Mengying xia Yu xia Zhongmin Wang Baiyong Li Jingao Li Chaosu Hu Department of Radiation Oncology Cancer Hospital of the University of ChineseAcademy of Sciences(Zhejiang Cancer Hospital)HangzhouChina Gastroenterology and Urology Department II Hunan Cancer Hospital/the Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangshaChina Clinical Research Center for Gastrointestinal Cancer in Hunan Province ChangshaChina Department of Medical Oncology Affiliated Cancer Hospital&Institute of Guangzhou Medical UniversityGuangzhouChina Department of Radiation Oncology Guangxi Medical University Affiliated Tumor Hospital&Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor(Guangxi Medical University)Ministry of Education&Guangxi Key Laboratory of Early Prevention and Treatment for Regional High Frequency TumorGuangxi Medical UniversityNanningChina Department of Radiation Oncology Cancer CenterThe First Affiliated Hospital of Xiamen UniversityXiamenChina Department of Medical Oncology Cancer Hospital of Shantou University Medical CollegeShantouChina Department of Radiation Oncology Peking University Cancer Hospital&InstituteBeijingChina Department of Oncology Xiangya Hospital Central South UniversityChangshaChina Department of Medical Oncology Hainan General HospitalHainan Affiliated Hospital of Hainan Medical UniversityHaikouChina Department of Oncology The Affiliated Panyu Central Hospital of Guangzhou Medical UniversityGuangzhouChina Department of Medical Oncology Fujian Medical University Union HospitalFuzhouChina Department of Radiation Oncology Clinical Oncology School of Fujian Medical UniversityFujian Cancer HospitalFuzhouChina Department of Radiation Therapy for Thoracic Tumors Zhongshan City People’s HospitalZhongshanChina Tumor Radiotherapy Center Chongqing University Cancer HospitalChongqing Cancer HospitalChongqing Cancer InstituteChongqingChina Department of Oncology Shenzhen People’s Hospital(The Second Clinical Medical CollegeJinan UniversityThe First Affiliated HospitalSo

Penpulimab is an anti-programmed cell death-1(PD-1)IgG1 antibody with no Fc gamma receptor(FcγR)binding activity,and thus theoretically reduced immune-related adverse events(irAEs)while maintaining *** single-arm,phase II trial conducted across 20 tertiary care centers in China enrolled adult patients with metastatic nasopharyngeal carcinoma(NPC)who had failed two or more lines of previous systemic *** received 200-mg penpulimab intravenously every 2 weeks(4 weeks per cycle)until disease progression or intolerable *** primary endpoint was objective response rate(ORR)per RECIST(version 1.1),as assessed by an independent radiological review *** secondary endpoints included progression-free survival(PFS)and overall survival(OS).One hundred thirty patients were enrolled and 125 were efficacy *** the data cutoff date(September 28,2022),1 patient achieved complete response and 34 patients attained partial *** ORR was 28.0%(95%CI 20.3–36.7%).The response was durable,with 66.8%still in response at 9 ***-three patients(26.4%)were still on *** median PFS and OS were 3.6 months(95%CI=1.9–7.3 months)and 22.8 months(95%CI=17.1 months to not reached),***(7.6%)patients experienced grade 3 or higher *** has promising anti-tumor activities and acceptable toxicities in heavily pretreated metastatic NPC patients,supporting further clinical development as third-line treatment of metastatic NPC.

关键词： metastatic nasopharyngeal supporting

动静脉移植物内瘘行经皮腔内球囊血管成形术后初级通畅时间的影响因素

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中华医学杂志 2024年第32期104卷 3037-3041页

作者：李相杰郑国富赵霞孙浩傅麒宁重庆医科大学附属第一医院血管外科重庆赣州市人民医院血管外科赣州

目的探讨动静脉移植物内瘘(AVG)行经皮腔内球囊血管成形(PTA)术后初级通畅时间的影响因素。方法回顾性分析2018年2月至2021年12月在重庆医科大学附属第一医院行AVG置入的血液透析患者资料。分析年龄、性别、AVG使用时间、狭窄部位、狭... 详细信息

目的探讨动静脉移植物内瘘(AVG)行经皮腔内球囊血管成形(PTA)术后初级通畅时间的影响因素。方法回顾性分析2018年2月至2021年12月在重庆医科大学附属第一医院行AVG置入的血液透析患者资料。分析年龄、性别、AVG使用时间、狭窄部位、狭窄程度、狭窄长度、残余狭窄、是否合并血栓形成等因素, 采用多重线性回归模型分析PTA术后初级通畅时间的影响因素。结果纳入101例患者, 其中男35例, 女66例, 首次接受PTA的年龄[M(Q1, Q3)]为61(51, 68)岁, 随访时长(38.5±15.3)个月, PTA术后初级通畅时间为5(3, 10)个月, 共计331次PTA治疗。多重线性回归分析结果显示, 静脉端吻合口和回流静脉闭塞(β=-2.773, 95%CI:-5.440～-0.105, P=0.042)、女性(β=-2.247, 95%CI:-3.853～-0.642, P=0.006)及既往PTA处理次数多(β=-0.516, 95%CI:-0.978～-0.054, P=0.029)为PTA术后初级通畅时间短的危险因素。结论 AVG静脉端吻合口和回流静脉狭窄程度、女性及既往多次PTA治疗与AVG患者PTA术后初级通畅时间短相关。

关键词：血液透析动静脉瘘血管成形术气囊