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Raised bed planting promotes grain number per spike in wheat grown after rice by improving spike differentiation and enhancing photosynthetic capacity

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Journal of Integrative Agriculture 2023年第6期22卷 1631-1644页

作者： DU Xiang-bei XI Min WEI Zhi chen xiao-fei WU Wen-ge KONG Ling-cong Crop Research Institute Anhui Academy of Agricultural SciencesHefei 230031P.R.China Rice Research Institute Anhui Academy of Agricultural SciencesHefei 230031P.R.China

The yield of wheat in wheat–rice rotation cropping systems in the Yangtze River Plain, China, is adversely impacted by waterlogging. A raised bed planting(RBP) pattern may reduce waterlogging and increase the wheat yield after rice cultivation by improving the grain number per spike. However, the physiological basis for grain formation under RBP conditions remains poorly understood. The present study was performed over two growing seasons(2018/2019and 2019/2020) to examine the effects of the planting pattern(i.e., RBP and flat planting(FP)) on the floret and grain formation features and leaf photosynthetic source characteristics of wheat. The results indicated that implementation of the RBP pattern improved the soil–plant nitrogen(N) supply during floret development, which facilitated balanced floret development, resulting in a 9.5% increase in the number of fertile florets per spike. Moreover, the RBP pattern delayed wheat leaf senescence and increased the photosynthetic source capacity by 13.9%, which produced more assimilates for grain filling. Delayed leaf senescence was attributed to the resultant high leaf N content and enhanced antioxidant metabolism. Correspondingly, under RBP conditions, 7.6–8.6% more grains per spike were recorded, and the grain yield was ultimately enhanced by 10.4–12.7%. These results demonstrate that the improvement of the spike differentiation process and the enhancement of the leaf photosynthetic capacity were the main reasons for the increased grain number per spike of wheat under the RBP pattern, and additional improvements in this technique should be achievable through further investigation.

关键词： grain number floret development photosynthetic capacity wheat grown after rice

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A 155 Mbps laser diode driver with automatic power and extinction ratio control

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第8期8卷 1346-1350页

作者： chen xiao-fei ZOU Xue-cheng LIN Shuang-xi LIU Zheng-lin JIN Hai Department of Electronic Science and Technology Huazhong University of Science and Technology Wuhan 430074 China School of Electric and lnformation Engineering Wuhan Institute of Technology Wuhan 430073 China Cluster and Grid Computing Laboratory Huazhong University of Science and Technology Wuhan 430074 China

An integrated laser diode driver(LDD) driving an edge-emitting laser diode was designed and fabricated by 0.35 μm BiCMOS technology. This paper proposes a scheme which combines the automatic power control loop and temperature com-pensation for modulation current in order to maintain constant extinction ratio and average optical power. To implement tem-perature compensation for modulation current,a novel circuit which generates a PTAT current by using the injecting base current of a bipolar transistor in saturation region,and alternates the amplifier feedback loop(closed or not) to control the state of the current path is presented. Simulation results showed that programmed by choice of external resistors,the IC can provide modu-lation current from 5 mA to 85 mA with temperature compensation adjustments and independent bias current from 4 mA to 100 mA. Optical test results showed that clear eye-diagrams can be obtained at 155 Mbps,with the output optical power being nearly constant,and the variation of extinction ratio being lower than 0.7 dB.

关键词：激光器二极管自动功率控制消光系数温度补偿

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iTRAQ-based quantitative proteomic analysis reveals key pathways responsible for scurs in sheep(Ovis aries)

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Journal of Integrative Agriculture 2018年第8期17卷 1843-1851页

作者： HE xiao-hong chen xiao-fei PU Ya-bin GUAN Wei-jun SONG Shen ZHAO Qian-jun LI Xiang-chen JIANG Lin MA Yue-hui Institute of Animal Science Chinese Academy of Agricultural Sciences CAAS-ILRI Joint Laboratory on Livestock and Forage Genetic Resources Institute of Animal Science Chinese Academy of Agricultural Sciences Institute of Animal Science Enshi Autonomous Prefecture Academy of Agricultural Sciences

Scurs is a horn phenotype that exhibits as small corneous structures on the skull due to the deformed development of horn tissues. Previous genome-wide association analysis of scurs in Soay sheep showed a significant association to the polled locus, relaxin-like receptor 2(RXFP2). However, the molecular mechanism underlying the development of scurs remains largely unknown. In the present study, we performed an i TRAQ-based quantitative proteomic analysis of horn tissues from both scurs and normal two-horned and four-horned individuals among Altay sheep to identify the differentially expressed proteins(DEPs) responsible for the scurs phenotype. In total, 232 proteins showed significant differential expression, and the most significant Gene ontology categories were the adhesion processes(biological adhesion(P=4.07×10–17) and cell adhesion(P=3.7×10–16)), multicellular organismal process(single-multicellular organism process(P=2.06×10–11) and multicellular organismal process(P=2.29×10–11)) and extracellular processes(extracellular matrix organization(P=4.77×10–16) and extracellular structure organization(P=4.93×10–16)). Kyoto encyclopedia of genes and genomes(KEGG) analysis showed that extracellular matrix(ECM)-receptor interactions and focal adhesion pathways were the most significant pathways. This finding is consistent with the reduced formation of extracellular matrix in scurs and the development of deformed horn tissues. Our study helps to elucidate the inheritance pattern of sheep horn traits from the perspectives of downstream expressed proteins.

关键词： scurs sheep iTRAQ horn development ECM-receptor interaction pathway

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Mouse strain differences in selective serotonin reuptake inhibitors sensitivity correlates with serotonin transporter binding and function

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中国药理学与毒理学杂志 2018年第9期32卷 710-711页

作者： JIN Zeng-liang chen xiao-fei LI xiao-rong XIONG Jie ZHENG Yuan-yuan GAO Na-na LI Yun-feng Beijing Key laboratory of Neuropsychopharmacology Beijing Institute of Pharmacology and Toxicology Department of Pharmacology School of Basic Medical SciencesCapital Medical University

OBJECTIVE Selective serotonin reuptake inhibitors(SSRIs) bind 5-HT transporters,leading to the accumulation of 5-HT and amelioration of depression.Although different mouse strain showed different sensitivity to SSRIs in mouse models of depression,the reason for these strain differences remains unclear.Here,therefore,in the present study,we examined immobility time and locomotor activity in two mouse strains,namely,C57BL/6 J and DBA/2 J mice,and the effects of the SSRIs fluoxetine.Furthermore,we analyzed 5-HT transporter binding and reuptake inhibition in both strains to explore their relationship with the immobility and locomotor activity effects of the three SSRIs in these two mouse strains.METHODS Strain differences in SSRI effects in the tail suspension test(TST) and forced swimming test(FST).To initiate our studies,we sought to confirm that SERT strain variation did not alter SERT protein expression,5-HT recognition,or uptake activity when expressed in C57BL/6 J and DBA/2 J mice.Radioligand binding assays were conducted to determine the affinity of the SSRIs for the 5-HT transporters in the two mouse strains.RESULTS SSRI citalopram dose-dependently reduced immobility time in both the FST and TST in DBA/2 J but not C57BL/6 J mouse strains,whereas fluoxetine showed opposite results.Paroxetine reduced immobility time similarly in both strains.The affinity of citalopram for the 5-HT transporter in DBA/2 J mice was 700-fold higher than that for in C57BL/6 J mice,whereas the affinity of fluoxetine in C57BL/6 J mice was 100-fold higher than that in the DBA/2 J mouse.Furthermore,High citalopram concentrations were required to [3 H]5-HT uptake in C57BL/6 J but not DBA/2 J mouse cortical synaptosomes,whereas fluoxetine also showed opposite results.CONCLUSION Immobility duration depends on 5-HT transporter binding levels,leading to apparent strain differences in immobility time in FST and TST.Furthermore,differences in 5-HT transporter binding may cause variations in SSRI responses on behaviors.SERT mutation mice mainta

关键词： antidepressants mouse strains selective serotonin reuptake inhibitors

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基于代谢组学结合生物信息学探讨热毒宁注射液与青霉素注射液联用致类过敏反应的潜在致敏原及作用机制

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药学学报 2024年第2期59卷 382-394页

作者：陈毓龙翟优王晓艳李伟霞张辉吴娅丽杨柳青陈小菲张书琦牛璐冯科冉李琨唐进法张明亮河南中医药大学河南郑州450046 河南省中药临床应用评价与转化工程研究中心河南省中药临床药学中医药重点实验室河南省中药安全评价与风险防控工程研究中心河南中医药大学第一附属医院药学部河南郑州450000 河南中医药大学呼吸疾病中药防治省部共建协同创新中心河南郑州450046

本研究基于代谢组学结合生物信息学的策略分析热毒宁注射液与青霉素注射液联用引发类过敏反应(pseudo-allergic reactions,PARs)的潜在致敏原及作用机制。所有动物实验操作和福利均遵循河南中医药大学第一附属实验动物伦理与动物福利委... 详细信息

本研究基于代谢组学结合生物信息学的策略分析热毒宁注射液与青霉素注射液联用引发类过敏反应(pseudo-allergic reactions,PARs)的潜在致敏原及作用机制。所有动物实验操作和福利均遵循河南中医药大学第一附属实验动物伦理与动物福利委员会要求(批号:YFYDW2020002)。基于UPLC-Q-TOF/MS技术结合UNIFI软件在热毒宁与青霉素混合注射液中共鉴定得到21种化合物。进一步基于分子对接技术筛选出其10种与类过敏原受体MrgprX2激动剂位点具有强烈结合活性的潜在致敏原。采用UPLC-Q-TOF/MS技术进行代谢组学分析发现花生四烯酸、磷脂酰胆碱、磷脂酰丝氨酸、前列腺素类以及白三烯类等34个内源性代谢物为热毒宁注射液与青霉素注射液联用引发PARs的差异代谢物。通过对“潜在致敏原-靶标-差异代谢物”交互网络分析获得二者联用时药液中的绿原酸类(绿原酸、新绿原酸、隐绿原酸、异绿原酸A等)以及β-内酰胺类致敏原可能主要通过调控PLD1、PLA2G12A和CYP1A1这三种上游信号靶标,主要激活花生四烯酸代谢通路,促使肥大细胞的脱颗粒,释放下游的内源性炎性介质,继而诱发PARs。

关键词：中西药联用类过敏反应热毒宁注射液注射用青霉素钠代谢组学生物信息学

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LaCuO_(3)/3DOMCeO_(2)的制备及其催化性能研究

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中国给水排水 2024年第1期40卷 97-103页

作者：李超李再兴陈晓飞张琴琴马伟涛岳欣邢茜田占伟张晨阳祁浩杰河北科技大学环境科学与工程学院河北石家庄050018 河北省污染防治生物技术实验室河北石家庄050018 天俱时工程科技集团有限公司河北石家庄050011 石家庄东华金龙化工有限公司河北石家庄052165

制备了钙钛矿型LaCuO_(3)/3DOMCeO_(2)催化剂用于非均相类芬顿反应降解罗丹明B,并通过XRD、SEM和XPS等对该催化剂进行表征。结果表明,LaCuO_(3)/3DOMCeO_(2)呈现三维有序大孔结构。负载3DOMCeO_(2)使LaCuO_(3)的比表面积增大、Cu+含量... 详细信息

制备了钙钛矿型LaCuO_(3)/3DOMCeO_(2)催化剂用于非均相类芬顿反应降解罗丹明B,并通过XRD、SEM和XPS等对该催化剂进行表征。结果表明,LaCuO_(3)/3DOMCeO_(2)呈现三维有序大孔结构。负载3DOMCeO_(2)使LaCuO_(3)的比表面积增大、Cu+含量上升。LaCuO_(3)/3DOMCeO_(2)具有比均相芬顿催化剂更宽的pH适用范围和更高的H2O_(2)利用率。循环使用10次后,LaCuO_(3)/3DOMCeO_(2)仍具有较高的催化活性。LaCuO_(3)/3DOMCeO_(2)表面存在Cu^(2+)■Cu+和Ce^(4+)■Ce^(3+)循环,二者协同引发高效类芬顿反应,产生大量·OH和·HO_(2),实现了对罗丹明B的高效降解。

关键词：钙钛矿 3DOMCeO_(2) 非均相类芬顿催化剂罗丹明B 模板法

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Current landscape of preoperative neoadjuvant therapies for initial resectable colorectal cancer liver metastasis

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World Journal of Gastroenterology 2024年第7期30卷 663-672页

作者： xiao-fei cheng Feng Zhao Dong chen Fan-Long Liu Department of Colorectal Surgery The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina Department of Radiation Oncology The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina

Colorectal cancer liver metastasis(CRLM)presents a clinical challenge,and optimizing treatment strategies is crucial for improving patient outcomes.Surgical resection,a key element in achieving prolonged survival,is often linked to a heightened risk of recurrence.Acknowledging the potential benefits of preoperative neoadjuvant chemotherapy in managing resectable liver metastases,this approach has gained attention for its role in tumor downsizing,assessing biological behavior,and reducing the risk of postoperative recurrence.However,the use of neoadjuvant chemotherapy in initially resectable CRLM sparks ongoing debates.The balance between tumor reduction and the risk of hepatic injury,coupled with concerns about delaying surgery,necessitates a nuanced approach.This article explores recent research insights and draws upon the practical experiences at our center to address critical issues regarding considerations for initially resectable cases.Examining the criteria for patient selection and the judicious choice of neoadjuvant regimens are pivotal areas of discussion.Striking the right balance between maximizing treatment efficacy and minimizing adverse effects is imperative.The dynamic landscape of precision medicine is also reflected in the evolving role of gene testing,such as RAS/BRAF and PIK3CA,in tailoring neoadjuvant regimens.Furthermore,the review emphasizes the need for a multidisciplinary approach to navigate the comp-lexities of CRLM.Integrating technical expertise and biological insights is crucial in refining neoadjuvant strategies.The management of progression following neoadjuvant chemotherapy requires a tailored approach,acknowledging the diverse biological behaviors that may emerge.In conclusion,this review aims to provide a comprehensive perspective on the considerations,challenges,and advancements in the use of neoadjuvant chemotherapy for initially resectable CRLM.By combining evidencebased insights with practical experiences,we aspire to contribute to the ongoing discourse on refining treatment

关键词： Neoadjuvant therapy Colorectal cancer liver metastasis Multidisciplinary teams Chemotherapeutic regimens Resectability criteria

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Construction of a nomogram model to predict technical difficulty in performing laparoscopic sphincter-preserving radical resection for rectal cancer

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World Journal of Gastroenterology 2024年第18期30卷 2418-2439页

作者： xiao-Cong Zhou Shi-Wei Guan fei-Yue Ke Gaurav Dhamija Qiang Wang Bang-fei chen Medical University(Wenzhou Central Hospital) Wenzhou 325000Zhejiang ProvinceChina Department of Hepatobiliary Surgery The Dingli Clinical Institute of Wenzhou Medical University(Wenzhou Central Hospital)Wenzhou 325000Zhejiang ProvinceChina Postgraduate Training Base Alliance of Wenzhou Medical University Wenzhou Central HospitalWenzhou 325000Zhejiang ProvinceChina School of International Studies Wenzhou Medical UniversityWenzhou Central HospitalWenzhou 325000Zhejiang ProvinceChina Department of Radiology The Dingli Clinical Institute of Wenzhou Medical University(Wenzhou Central Hospital)Wenzhou 325000Zhejiang ProvinceChina Department of Colorectal Surgery The Affiliated Zhejiang HospitalZhejiang University School of Medicine(Zhejiang Hospital)Hangzhou 310000Zhejiang ProvinceChina

BACKGROUND Colorectal surgeons are well aware that performing surgery for rectal cancer becomes more challenging in obese patients with narrow and deep pelvic cavities.Therefore,it is essential for colorectal surgeons to have a comprehensive understanding of pelvic structure prior to surgery and anticipate potential surgical difficulties.AIM To evaluate predictive parameters for technical challenges encountered during laparoscopic radical sphincter-preserving surgery for rectal cancer.METHODS We retrospectively gathered data from 162 consecutive patients who underwent laparoscopic radical sphincterpreserving surgery for rectal cancer.Three-dimensional reconstruction of pelvic bone and soft tissue parameters was conducted using computed tomography(CT)scans.Operative difficulty was categorized as either high or low,and multivariate logistic regression analysis was employed to identify predictors of operative difficulty,ultimately creating a nomogram.RESULTS Out of 162 patients,21(13.0%)were classified in the high surgical difficulty group,while 141(87.0%)were in the low surgical difficulty group.Multivariate logistic regression analysis showed that the surgical approach using laparoscopic intersphincteric dissection,intraoperative preventive ostomy,and the sacrococcygeal distance were independent risk factors for highly difficult laparoscopic radical sphincter-sparing surgery for rectal cancer(P<0.05).Conversely,the anterior-posterior diameter of pelvic inlet/sacrococcygeal distance was identified as a protective factor(P<0.05).A nomogram was subsequently constructed,demonstrating good predictive accuracy(C-index=0.834).CONCLUSION The surgical approach,intraoperative preventive ostomy,the sacrococcygeal distance,and the anterior-posterior diameter of pelvic inlet/sacrococcygeal distance could help to predict the difficulty of laparoscopic radical sphincter-preserving surgery.

关键词： Nomogram Rectal cancer Laparoscopic operation Sphincter-preserving surgery Technical difficulty

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水生生物环境DNA监测技术的发展、应用与标准化

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水生生物学报 2024年第8期48卷 1443-1458页

作者：谷思雨陈凯金小伟李文攀陈晓飞熊晶汤敏喆姜传奇熊杰李涛张琪崔永德曾宏辉何舜平王业耀缪炜中国科学院水生生物研究所武汉430072 中国环境监测总站北京100012 湖北省生态环境科学研究院武汉430072 湖北省生态环境监测中心站武汉430072

水生态系统是保障国家生态安全的重要基础。水生生物在水生态系统中扮演着核心角色,是研究水体演变的重要依据,是维护水生态健康的关键。传统水生生物调查和监测通常采用形态学方法,但其存在专业知识要求高、难以标准化和自动化及费时... 详细信息

水生态系统是保障国家生态安全的重要基础。水生生物在水生态系统中扮演着核心角色,是研究水体演变的重要依据,是维护水生态健康的关键。传统水生生物调查和监测通常采用形态学方法,但其存在专业知识要求高、难以标准化和自动化及费时耗力等缺陷。环境DNA(Environmental DNA,简称eDNA)技术是一种通过监测环境中存在的DNA片段来识别特定生物物种的方法,可以实现基于水体中DNA分子进行水生生物的鉴定和监测,为水生生物的常态化监测提供了一个准确、便捷、可标准化和自动化实施的方案。文章介绍了eDNA技术的基本原理,总结回顾了eDNA技术从萌芽到广泛科研应用的发展历史和过程,介绍了基于eDNA的宏条形码和宏基因组等各类水生生物鉴定监测技术;阐述了eDNA技术在保护种、入侵种及生物类群监测和水生态评估等各领域的应用;分析了eDNA技术当前面临的物种参考序列数据库不完善等各类挑战;提出了通过优化完善数据库、样品采集方法、评价指标和参数、样品保藏、数据分析和存储等来推动eDNA技术标准化和自动化,以解决当前面临的挑战。同时,基于eDNA技术当前的发展阶段,提出了在我国水体结合专业形态分类鉴定开展水生生物eDNA技术标准化监测的实施建议。

关键词：环境DNA技术标准化水生生物监测宏条形码测序技术宏基因组测序技术 eDNA数据库

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Study on sex differences and potential clinical value of threedimensional computerized tomography pelvimetry in rectal cancer patients

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 773-786页

作者： xiao-Cong Zhou fei-Yue Ke Gaurav Dhamija Hao chen Qiang Wang Department of Colorectal Surgery The Dingli Clinical Institute of Wenzhou Medical University(Wenzhou Central Hospital)Wenzhou 325000Zhejiang ProvinceChina Postgraduate Training Base Alliance of Wenzhou Medical University Wenzhou Central HospitalWenzhou 325000Zhejiang ProvinceChina School of International Studies Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina Department of Radiology The Dingli Clinical Institute of Wenzhou Medical University(Wenzhou Central Hospital)Wenzhou 325000Zhejiang ProvinceChina

BACKGROUND Laparoscopic rectal cancer radical surgery is a complex procedure affected by various factors.However,the existing literature lacks standardized parameters for the pelvic region and soft tissues,which hampers the establishment of consistent conclusions.AIM To comprehensively assess 16 pelvic and 7 soft tissue parameters through computerized tomography(CT)-based three-dimensional(3D)reconstruction,providing a strong theoretical basis to address challenges in laparoscopic rectal cancer radical surgery.METHODS We analyzed data from 218 patients who underwent radical laparoscopic surgery for rectal cancer,and utilized CT data for 3D pelvic reconstruction.Specific anatomical points were carefully marked and measured using advanced 3D modeling software.To analyze the pelvic and soft tissue parameters,we emp-loyed statistical methods including paired sample t-tests,Wilcoxon rank-sum tests,and correlation analysis.RESULTS The investigation highlighted significant sex disparities in 14 pelvic bone parameters and 3 soft tissue parameters.Males demonstrated larger measurements in pelvic depth and overall curvature,smaller measurements in pelvic width,a larger mesorectal fat area,and a larger anterior-posterior abdominal diameter.By contrast,females exhibited wider pelvises,shallower depth,smaller overall curvature,and an increased amount of subcutaneous fat tissue.However,there were no significant sex differences observed in certain parameters such as sacral curvature height,superior pubococcygeal diameter,rectal area,visceral fat area,waist circumference,and transverse abdominal diameter.CONCLUSION The reconstruction of 3D CT data enabled accurate pelvic measurements,revealing significant sex differences in both pelvic and soft tissue parameters.This study design offer potential in predicting surgical difficulties and creating personalized surgical plans for male rectal cancer patients with a potentially“difficult pelvis”,ultimately improving surgical outcomes.Further research and utilization of these parameters

关键词： Computerized tomography Rectal cancer Three-dimensional reconstruction Pelvimetry Sex differences

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