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The effect of ergosterol on the allogrooming behavior of termites in response to the entomopathogenic fungus Metarhiziumanisopliae

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Insect Science 2023年第1期30卷 185-196页

作者： Yong Chen Chongwen Zhao Wenhui Zeng wenjing wu Shijun Zhang Dandan Zhang Zhiqiang Li Guangdong Key Laboratory of Animal Conservation and Resource Utilization Guangdong Public Laboratory of Wild Animal Conservation and UtilizationInstitute of ZoologyGuangdong Academy of SciencesGuangzhouChina School of Ecology Sun Yat-sen UniversityGuangzhouChina

Termites have physiological and behavioral immunities that make them highly resistant to pathogen infections,which complicates biocontrol efforts.However,the stimuli that trigger the pathogen-avoidance behaviors of termites are still unclear.Our study shows that workers of Coptotermes formosanus exposed to the conidia of Metarhizium anisopliae exhibited a significantly higher frequency and longer duration of allogrooming behaviors compared with untreated termites.Volatile compounds in the cuticle of control termites and termites previously exposed to a suspension of M.anisopliae conidia were analyzed and compared using a gas chromatography-mass spectrometer(GC-MS).Our results showed that the amount of ergosterol differed between the fungus-exposed and control termites.Choice tests showed that termites significantly preferred to stay on filter paper treated with ergosterol(0.05,0.1,or 1.0 mg/mL)compared with control filter paper.In addition,termites exposed to ergosterol followed by M.anisopliae conidia were allogroomed at a significantly higher frequency and for a longer duration than termites exposed to alcohol(the solvent used with the ergosterol in the ergosterol trials)alone followed by M.anisopliae conidia.These results showed that ergosterol may enhance the allogrooming behavior of termites in the presence of entomopathogenic fungi.

关键词： allogrooming behavior entomopathogenic fungus ergosterol recognition social immunity termite

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Ozone and secondary organic aerosol formation potential from anthropogenic volatile organic compounds emissions in China

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Journal of Environmental Sciences 2017年第3期29卷 224-237页

作者： wenjing wu Bin Zhao Shuxiao Wang Jiming Hao State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China Collaborative Innovation Center for Regional Environmental Quality Tsinghua UniversityBeijin9 100084China Joint Institute for Earth System Science and Engineering Department of Atmospheric and Oceanic SciencesUniversity of CaliforniaLos AngelesCA 90095USA.

Volatile organic compounds （VOCs） are major precursors for ozone and secondary organic aerosol （SOA）, both of which greatly harm human health and significantly affect the Earth＇s climate. We simultaneously estimated ozone and SOA formation from anthropogenic VOCs emissions in China by employing photochemical ozone creation potential （POCP） values and SOA yields. We gave special attention to large molecular species and adopted the SOA yield curves from latest smog chamber experiments. The estimation shows that alkylbenzenes are greatest contributors to both ozone and SOA formation （36.0% and 51.6%, respectively）, while toluene and xylenes are largest contributing individual VOCs. Industry solvent use, industry process and domestic combustion are three sectors with the largest contributions to both ozone （24.7%, 23.0% and 17.8%, respectively） and SOA （22.9%, 34.6% and 19.6%, respectively） formation. In terms of the formation potential per unit VOCs emission, ozone is sensitive to open biomass burning, transportation, and domestic solvent use, and SOA is sensitive to industry process, domestic solvent use, and domestic combustion. Biomass stoves, paint application in industrial protection and buildings, adhesives application are key individual sources to ozone and SOA formation, whether measured by total contribution or contribution per unit VOCs emission. The results imply that current VOCs control policies should be extended to cover most important industrial sources, and the control measures for biomass stoves should be tightened. Finally, discrepant VOCs control policies should be implemented in different regions based on their ozone/aerosol concentration levels and dominant emission sources for ozone and SOA formation potential.

关键词： Volatile organic compounds （VOCs）OzoneSecondary organic aerosol （SOA）Formation potentialControl strategy

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A novel gene-activated matrix composed of PEI/plasmid-BMP2 complexes and hydroxyapatite/chitosan-microspheres promotes bone regeneration

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Nano Research 2022年第7期15卷 6348-6360页

作者： Ruyuan Ding Yajun Liu Dawei Cheng Gang Yang wenjing wu Haoran Du Xin Jin Yihan Chen Yuanyin Wang Boon Chin HENG Qing Yang Jianguang XU Key Lab.of Oral Diseases Research of Anhui Province College&Hospital of StomatologyAnhui Medical UniversityHefei 230032China Central Laboratory Peking University School and Hospital of StomatologyBeijing 100081China School of Medical and Life Sciences Sunway UniversitySelangor Darul EhsanMalaysia Department of Orthopaedics The First Affiliated Hospital of Anhui Medical UniversityAnhui Medical UniversityHefei 230032China Department of Chemistry and Laboratory of Nanomaterials for Energy Conversion(LNEC)University of Science and Technology of China(USTC)Hefei 230026China

The incorporation of pro-osteogenic growth factors into bone graft materials to enhance bone regeneration is a key research area within the field of bone tissue engineering and regenerative medicine.However,growth factors directly incorporated in protein form are easily degraded,and have a limited active half-life,which cannot exert long-term and stable osteoinductive and oteoconductive effects.The combination of gene therapy and tissue engineering through gene-activated matrix(GAM)may provide a good alternative solution to overcome such limitations.Scaffold materials can be combined together with plasmid DNA and a chemical-based transfection agent to form GAM,through which transfected cells could secrete growth factors in a sustained manner over a longer time duration;thereby enabling bone graft materials to act as a repository of therapeutic genes,while providing structural support and a scaffold matrix for new bone tissue ingrowth.In this study,we prepared hydroxyapatite/chitosan-microspheres(HA/CS-MS)with microfabrication technology and emulsification method,and loaded the polyethylene imine/bone morphogenetic protein 2 plasmid(PEI/pBMP2)complexes with high transfection capacity(transfection efficiency up to 54.79%±4.95%),thus forming a novel GAM system with superior bone regeneration capacity—PEI/pBMP2-HA/CS-MS.The in vitro experiments in this study demonstrated that our GAM had excellent biocompatibility(with cell viability over 95%),and that the as-fabricated microsphere material possessed a nano-network fibrous structure similar to natural extracellular matrix(ECM),together with a higher surface area that can provide more cell adhesion sites.The sizes of the prepared microspheres were mainly distributed in the 160–180μm range,while the maximal loading rate of PEI-pBMP2 complexes was 59.79%±1.85%.As a loaded complexes system,the GAM can release plasmids in a slow controlled manner,effectively transfecting surrounding target cells(release effect for up to 21 days),while cells adherent to the material can al

关键词： BMP2 chitosan gene therapy nanoparticle regeneration microsphere

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SARS-CoV-2 N protein induces acute kidney injury in diabetic mice via the Smad3-Ripk3/MLKL necroptosis pathway

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Signal Transduction and Targeted Therapy 2023年第5期8卷 2044-2047页

作者： Liying Liang Wenbiao Wang Junzhe Chen wenjing wu Xiao-Ru Huang Biao Wei Yu Zhong Ronald C.W.Ma Xueqing Yu Hui-Yao Lan Departments of Medicine&Therapeutics Li Ka Shing Institute of Health Sciencesand Lui Che Woo Institute of Innovative MedicineThe Chinese University of Hong KongHong KongChina Department of Clinical Pharmacy Guangzhou Eighth People’s HospitalGuangzhou Medical UniversityGuangzhouChina The Chinese University of Hong Kong-Guangdong Academy of Sciences/Guangdong Provincial People’s Hospital Joint Research Laboratory on Immunological and Genetic Kidney Diseases The Chinese University of Hong KongHong KongChina Guangdong-Hong Kong Joint Laboratory for Immunological and Genetic Kidney Disease and Medical Research Center and Departments of Nephrology and PathologyGuangdong Academy of Medical ScienceGuangdong Provincial People’s HospitalGuangzhouChina Department of Nephrology The Third Affiliated hospitalSouthern Medical UniversityGuangzhouChina

Dear Editor,Kidney is one of major organs attacked by SARS-CoV-2,resulting in acute kidney injury(AKI)in critically ill COVID-19 patients,especially in the elderly and diabetic patients with diabetic kidney disease(DK... 详细信息

关键词： Smad3 kidney diabetic

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Leveraging individual-level data to advance air pollution health risk management

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Frontiers of Engineering Management 2022年第2期9卷 337-342页

作者： Jianxun YANG wenjing wu Miaomiao LIU Jun BI State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210023China

1 Introduction Environmental health risk management is a systematic engineering task,engaging multiple disciplines from the academic and government sectors.Reducing environmental health risks has become one of the key targets in the United Nations Sustainable Development Goals(SDGs).This target has been translated into public policies at many jurisdictional levels(Yue et al.,2020).To design region-specific and targeted policy initiatives,understanding how environmental health risks are spatially distributed and temporally resolved is fundamental.

关键词： al. pollution aging

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双膜结构FBG土压力传感器优化设计及灵敏度分析

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应用科学学报 2024年第2期42卷 248-261页

作者：邢广志陈博智吴文婧江苏科技大学土木工程与建筑学院江苏镇江212100 中国联合工程有限公司浙江杭州310051

为实现桩基础结构安全及其服役状态的监测和有效评估,提出一种双膜结构土压力传感器,以光纤布拉格光栅(fiber Bragg grating,FBG)为传感元件,通过保护结构中增加的温度补偿膜,实现温度作用与外部荷载作用的彻底分离。基于双膜结构土压... 详细信息

为实现桩基础结构安全及其服役状态的监测和有效评估,提出一种双膜结构土压力传感器,以光纤布拉格光栅(fiber Bragg grating,FBG)为传感元件,通过保护结构中增加的温度补偿膜,实现温度作用与外部荷载作用的彻底分离。基于双膜结构土压力传感器的工作原理,讨论了传感器压力灵敏度系数特性。结合有限元分析和实验研究,对灵敏度系数的影响参数展开了系统分析。数值分析结果表明,膜片厚度对压力敏感度系数的影响最大,结构半径和膜片厚度可选取为20 mm和1.8 mm;实验结果表明,在0-2 MPa范围内,压力灵敏度系数达3.32 pm/kPa。

关键词：光纤布拉格光栅双膜结构土压力传感器灵敏度分析

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Maize cryptochromes 1a1 and 1a2 promote seedling photomorphogenesis and shade resistance in Zea mays and Arabidopsis

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The Crop Journal 2023年第4期11卷 1192-1203页

作者： Xiaocong Fan Shizhan Chen wenjing wu Meifang Song Guanghua Sun Shuaitao Yao Weimin Zhan Lei Yan Hongdan Li Yanpei Zhang Lijian Wang Kang Zhang Liangliang Jiang Jianping Yang Qinghua Yang College of Agronomy State Key Laboratory of Wheat and Maize Crop Scienceand Center for Crop Genome EngineeringLongzi Lake CampusHenan Agricultural UniversityZhengzhou 450046HenanChina Institute of Radiation Technology Beijing Academy of Science and TechnologyBeijing 100875China Institute of Crops Jiangxi Academy of Agricultural SciencesNanchang 330200JiangxiChina Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Genovo Biotechnology Co. Ltd.Tianjin 301700China Henan Institute of Science and Technology Xinxiang 453003HenanChina

Maize growth and development are regulated by light quality,intensity and photoperiod.Cryptochromes are blue/ultraviolet-A light receptors involved in stem elongation,shade avoidance,and photoperiodic flowering.To investigate the function of cryptochrome 1(CRY1) in maize,where it is encoded by Zm CRY1,we obtained two Zm CRY1a genes(Zm CRY1a1 and Zm CRY1a2),both of which share the highest similarity with other gramineous plants,in particular rice CRY1a by phylogenetic analysis.In Arabidopsis,overexpression of Zm CRY1a genes promoted seedling de-etiolation under blue and white light,resulting in dwarfing of mature plants.In seedlings of the maize inbred line Zong 31(Zm CRY1aOE),overexpression of Zm CRY1a genes caused a reduction in the mesocotyl and first leaf sheath lengths due to down-regulation of genes influencing cell elongation.In mature transgenic maize plants,plant height,ear height,and internode length decreased in response to overexpression of Zm CRY1a genes.Expression of Zm CRY1a were insensitive to low blue light(LBL)-induced shade avoidance syndrome(SAS) in Arabidopsis and maize.This prompted us to investigate the regulatory role of the gibberellin and auxin metabolic pathways in the response of Zm CRY1a genes to LBL treatment.We confirmed a link between Zm CRY1a expression and hormonal influence on the growth and development of maize under LBL-induced SAS.These results reveal that Zm CRY1a has a relatively conservative function in regulating maize photomorphogenesis and may guide new strategies for breeding high density-tolerant maize cultivars.

关键词： Zea mays L.Cryptochrome Photomorphogenesis Shade avoidance syndrome Hormone

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Blaxit:A Modern Exodus?

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Beijing Review 2024年第26期67卷 24-24页

作者： wu wenjing Zhou Li The Human Rights Institute at Southwest University of Political Science and Law The Journal of Human Rights Law

Amid outbursts of racial violence,the term"Blaxit"gained prominence in the United States around 2016-17 through(social)media discourse,although its origins date back to earlier discussions in the 2000s.The word"Blaxit"describes the hypothetical or actual departure of African Americans,who make up 14 percent of the U.S.population,from the U.S.to other countries,particularly African nations,driven by aspirations for improved quality of life,job opportunities,favorable tax policies,and to escape racial discrimination.

关键词： gained discussions African

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体教融合背景下高职高专健美操教学创新研究

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当代体育科技 2024年第6期14卷 34-37页

作者：武文静山西省财政税务专科学校山西太原030024

体教融合强调体育与教育的有机结合,注重学生的全面发展。随着教育观念的不断更新和变革,体教融合已成为一种全新的教育理念。健美操运动是兼具健身、健美和舞蹈之美的运动项目,在高职高专体育教学中拥有着广阔的应用空间。因此,该文采... 详细信息

体教融合强调体育与教育的有机结合,注重学生的全面发展。随着教育观念的不断更新和变革,体教融合已成为一种全新的教育理念。健美操运动是兼具健身、健美和舞蹈之美的运动项目,在高职高专体育教学中拥有着广阔的应用空间。因此,该文采用文献资料法等研究方法,深入探讨体教融合背景下高职高专健美操的教学创新,以期有效推进体教融合背景下高职高专健美操教学的健康可持续性发展。

关键词：体教融合高职高专健美操教学创新

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妊娠期高血压疾病与婴儿神经行为发育关系的出生队列研究

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中华疾病控制杂志 2024年第5期28卷 497-502页

作者：王星吴文静林青梅郝元涛蔡莉中山大学公共卫生学院医学统计学系广州510080 佛山市妇幼保健院科教科佛山528000 佛山市妇幼保健院保健部佛山528000 北京大学公众健康与重大疫情防控战略研究中心北京100191 中山大学公共卫生学院妇幼卫生学系广州510080

目的探讨妊娠期高血压疾病(hypertension disorders in pregnancy, HDP)与婴儿神经行为发育的关系。方法基于佛山市妇幼保健信息系统出生队列数据,选取2016―2021年在佛山市妇幼保健院产检、分娩的孕产妇及其子代17 812对,采用《0岁~... 详细信息

目的探讨妊娠期高血压疾病(hypertension disorders in pregnancy, HDP)与婴儿神经行为发育的关系。方法基于佛山市妇幼保健信息系统出生队列数据,选取2016―2021年在佛山市妇幼保健院产检、分娩的孕产妇及其子代17 812对,采用《0岁~6岁儿童发育行为评估量表》评估婴儿不同月龄的神经行为发育情况。以孕期有HDP暴露史的研究对象为暴露组,采用1∶1倾向性评分匹配对照组,共纳入1 414对母子对。采用广义估计方程分析HDP与婴儿神经行为发育的关系。结果 HDP组婴儿在3、6、8、12月龄的总发育商和各能区发育商均低于对照组(均P<0.05)。控制混杂因素后,HDP暴露仍是婴儿神经行为发育的危险因素,总发育商的β值(95%CI)为-5.72(-6.80~-4.63);HDP与婴儿大运动(β=-5.35,95%CI:-6.86~-3.84,P<0.01)、精细动作(β=-5.64,95%CI:-6.92~-4.35,P<0.01)、适应能力(β=-5.88,95%CI:-7.26~-4.49,P<0.01)、语言(β=-5.80,95%CI:-7.10~-4.50,P<0.01)和社会行为能区发育商(β=-5.91,95%CI:-7.11~-4.72,P<0.01)降低有关。结论 HDP是婴儿神经行为发育的危险因素,与婴儿大运动、精细动作、适应能力、语言和社会行为能区发育呈负相关。

关键词：高血压妊娠儿童发育神经发育障碍

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