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An oxygenating colloidal bioink for the engineering of biomimetic tissue constructs

Bio-Design and Manufacturing 2024年第3期7卷 240-261页

作者： Seol-ha Jeong Jarno Hiemstra Patrick V.Blokzijl Rebeca Damian-Ferrara Danilo Martins dos Santos Jéssica H.l.da Fonseca Min-Ho Kang Jihyun Kim Dilara Yilmaz-Aykut Mei l.l.Cham-Pérez Jeroen leijten Su Ryon Shin Division of Engineering in Medicine Department of MedicineBrigham and Women’s HospitalHarvard Medical SchoolBostonMA 02139USA leijten lab Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 57522 NB EnschedeThe Netherlands Nanotechnology National laboratory for Agriculture(lNNA) Embrapa InstrumentaçãoSao CarlosSao Paulo 13560-970Brazil Department of Biomedical-Chemical Engineering The Catholic University of Korea43 Jibong-roBucheon-siGyeonggi-do 14662Republic of Korea Department of Biotechnology The Catholic University of Korea43 Jibong-roBucheon-siGyeonggi-do 14662Republic of Korea

Ensuring a sufficient oxygen supply is pivotal for the success of bioprinting applications since it fosters tissue integration and natural *** in oxygen concentration among diverse tissues necessitates the precise recreation of tissue-specific oxygen levels in imprinted constructs to support the survival of targeted *** oxygen-releasing biomaterials,such as oxygen-generating microparticles(OMPs),have shown promise for enhancing the oxygen supply of microenvironments in injured tissues,whether this approach is scalable for large tissues and whether tissue-specific bioinks with varying OMP concentrations remain printable remain *** study addresses this critical gap by introducing an innovative class of engineered oxygenated bioinks that combine colloidal-based microgels with *** report that incorporating nanosized calcium peroxide(nCaO_(2))and manganese oxide nanosheets(nMnO_(2))into hydrophobic polymeric microparticles enables precise modulation of oxygen release while controlling hydrogen peroxide ***,the fabrication of oxygenating and cytocompatible colloidal gels is achieved using an aqueous two-phase *** study thoroughly evaluates the fundamental characteristics of the resulting bioink,including its rheological behaviors,printability,shape fidelity,mechanical properties,and oxygen release ***,this study demonstrates the macroscopic scalability and cytocompatibility of printed constructs produced via cell-laden oxygenating colloidal *** showcasing the effectiveness of extrusion-based bioprinting,this study underscores how it can be used to fabricate biomimetic tissues,indicating its potential for new *** findings presented here advance the bioprinting field by achieving scalability with both high cell viability and the possibility of mimicking specifically oxygenated *** work thereby offers a promising avenue for the development of functional tissues with e

关键词： 3D bioprinting Bioink Colloidal gels Extrusion printing Oxygen-generating microparticle

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Acoustofluidic separation of prolate and spherical micro-objects

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Microsystems & Nanoengineering 2024年第1期10卷 217-230页

作者： Muhammad Soban Khan Mushtaq Ali Song ha lee Keun Young Jang Seong Jae lee Jinsoo Park Department of Mechanical Engineering Chonnam National University77 Yongbong-roBuk-guGwangju 61186Republic of Korea Department of Polymer Engineering The University of Suwon17 Wauan-gilBongdam-eupHwaseongGyeonggi 18323Republic of Korea

Most microfluidic separation techniques rely largely on object size as a separation *** ability to separate micro-objects based on their shape is crucial in various biomedical and chemical ***,we develop an ondemand,label-free acoustofluidic method to separate prolate ellipsoids from spherical microparticles based on traveling surface acoustic wave-induced acoustic radiation force and *** freely rotating non-spherical microobjects were aligned under the progressive acoustic field by the counterrotating radiation torque,and the major axis of the prolate ellipsoids was parallel to the progressive wave *** specific alignment of the ellipsoidal particles resulted in a reduction in the cross-sectional area perpendicular to the wave *** a consequence,the acoustic backscattering decreased,resulting in a decreased magnitude of the radiation *** the variation in radiation force,which depended on the micro-object morphology enabled the acoustofluidic shape-based *** conducted numerical simulations for the wave scattering of spherical and prolate objects to elucidate the working mechanism underlying the proposed method.A series of experiments with polystyrene microspheres,prolate ellipsoids,and peanut-shaped microparticles were performed for *** quantitative analysis of the separation efficiency,we confirmed the high purity and high recovery rate of the proposed acoustofluidic shapebased separation of *** a bioparticle,we utilize Thalassiosira eccentrica to perform shape-based separation,as the species has a variety of potential applications in drug delivery,biosensing,nanofabrication,bioencapsulation and immunoisolation.

关键词： separation spherical rotating

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Aerobic respiration lactococcus lactis ameliorate Salmonella induced infection and intestinal dysfunctions by oxygen-scavenging and maintaining immune balance and regulating intestinal microbiota

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Food Science and Human Wellness 2024年

作者： Yulong Zhang han Yang Zhiliang Cheng Hui ha Fei liu Yuehua Jiao Key laboratory of Dairy Science， Ministry of Education， Food College， Northeast Agricultural University Center of Drug Safety Evaluation， Heilongjiang University of Chinese Medicine

Salmonella grows better under aerobic conditions as a facultative anaerobic foodborne pathogenic bacteria. The oxygen-scavenging activity of lactococcus lactis in the intestinal tract is a promising strategy for preventing Salmonella infection. In this study， the aerobic respiration requirement and preventive mechanism of lactococcus lactis subsp. lactis (l. lactis) KlDS 4.0325 in murine models infected by Salmonella enterica subsp. enterica serovar Typhimurium (S. Typhimurium) Sl1344 were investigated. Results indicate that l. lactis KlDS 4.0325 is capable of aerobic respiratory metabolism in the host intestine when exogenous heme exists， and decrease intestinal oxygen concentration， which in turn trigger autophagy of intestinal cells to reduce S. Typhimurium load， improve gut microbiota composition， alleviate intestinal barrier injury and inflammation response. These results suggest that aerobic respiration l. lactis KlDS 4.0325 can prevent S. Typhimurium infection in a new way in which by restoring intestinal cell hypoxia， maintaining immune balance and regulating intestinal flora.

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RUFY4 deletion prevents pathological bone loss by blocking endo-lysosomal trafficking of osteoclasts

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Bone Research 2024年第2期12卷 407-420页

作者： Minhee Kim Jin Hee Park Miyeon Go Nawon lee Jeongin Seo hana lee Doyong Kim Hyunil ha Taesoo Kim Myeong Seon Jeong Suree Kim Taesoo Kim han Sung Kim Dongmin Kang Hyunbo Shim Soo Young lee Department of life Science Ewha Womans UniversitySeoul 03760South Korea The Research Center for Cellular Homeostasis Ewha Womans UniversitySeoul 03760South Korea Department of Biomedical Engineering Yonsei UniversityWonju 26493South Korea KM Convergence Research Division Korea Institute of Oriental MedicineDaejeon 34054South Korea Chuncheon Center Korea Basic Science InstituteChuncheon 24341South Korea Fluorescence Core Imaging Center and Bioimaging Data Curation Center Ewha Womans UniversitySeoul 03760South Korea Multitasking Macrophage Research Center Ewha Womans UniversitySeoul 03760South Korea

Mature osteoclasts degrade bone matrix by exocytosis of active proteases from secretory lysosomes through a ruffled ***,the molecular mechanisms underlying lysosomal trafficking and secretion in osteoclasts remain largely ***,we show with GeneChip analysis that RUN and FYVE domain-containing protein 4(RUFY4)is strongly upregulated during *** lacking Rufy4 exhibited a high trabecular bone mass phenotype with abnormalities in osteoclast function in ***,deleting Rufy4 did not affect osteoclast differentiation,but inhibited bone-resorbing activity due to disruption in the acidic maturation of secondary lysosomes,their trafficking to the membrane,and their secretion of cathepsin K into the extracellular ***,RUFY4 promotes late endosome-lysosome fusion by acting as an adaptor protein between Rab7 on late endosomes and lAMP2 on primary ***,Rufy4-deficient mice were highly protected from lipopolysaccharide-and ovariectomy-induced bone ***,RUFY4 plays as a new regulator in osteoclast activity by mediating endo-lysosomal trafficking and have a potential to be specific target for therapies against bone-loss diseases such as osteoporosis.

关键词： osteoclast inhibited traffic

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高校校区空间布局与校企协同创新——基于专精特新“小巨人”企业的微观经验证据

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高等教育研究 2024年第3期45卷 42-53页

作者：张文杰哈巍北京大学教育经济研究所北京100871

基于9200余家专精特新“小巨人”企业相关数据,量化评估高校校区空间布局对校企协同创新的影响发现,“小巨人”企业周边15公里范围内高校校区数量对校企联合申请并获授权专利的数量、校企合作广度与深度均有显著正向影响;从企业维度看,... 详细信息

基于9200余家专精特新“小巨人”企业相关数据,量化评估高校校区空间布局对校企协同创新的影响发现,“小巨人”企业周边15公里范围内高校校区数量对校企联合申请并获授权专利的数量、校企合作广度与深度均有显著正向影响;从企业维度看,显著促进了高校与高技术产业企业的发明专利研发合作,以及与非高技术产业企业、成长期企业的非发明专利研发合作;从高校维度看,这种影响主要来自本科高校尤其是高水平研究型高校;此外,校企协同创新随二者间距离增大而衰减。高校校区布局对企业持有的非校企联合申请专利数量也有显著影响,且这种间接效应大于以上直接效应。今后高校校区空间布局调整需综合考虑高校与企业的适配度,同时重点关注高水平研究型高校校区布局,助力深化校企协同创新。

关键词：校企协同创新高校校区空间布局 “小巨人”企业专利

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Is convenience really king? Comparative evaluation of catastrophic costs due to tuberculosis in the public and private healthcare sectors of Viet Nam: a longitudinal patient cost study

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贫困所致传染病(英文) 2024年第2期13卷 1-12页

作者： Nguyen Hoa Binh Quang Vo luan Nguyen Forse Rachel Jeanette Wiemers Anja Maria Christine Huynh Huy Ba Dong Thuy Thi Thu Phan Yen Thi Hoang Creswell Jacob Dang Thi Minh ha Nguyen lan Huu Shedrawy Jad l?nnroth Knut Nguyen Tuan Dinh Van Dinh luong Annerstedt Kristi Sidney Codlin Andrew James National lung Hospital Ha Noi Viet Nam Friends for International TB Relief Ha Noi Viet Nam Department of Global Public Health WHO Collaboration Centre On Tuberculosis and Social Medicine Karolinska Institute Stockholm Sweden Stop TB Partnership Geneva Switzerland Pham Ngoc Thach Hospital Ho Chi Minh City Viet Nam

Background In Viet Nam, tuberculosis (TB) represents a devastating life-event with an exorbitant price tag, partly due to lost income from daily directly observed therapy in public sector care. Thus, persons with TB may seek care in the private sector for its flexibility, convenience, and privacy. Our study aimed to measure income changes, costs and catastrophic cost incurrence among TB-affected households in the public and private *** Between October 2020 and March 2022, we conducted 110 longitudinal patient cost interviews, among 50 patients privately treated for TB and 60 TB patients treated by the National TB Program (NTP) in ha Noi, hai Phong and Ho Chi Minh City, Viet Nam. Using a local adaptation of the WHO TB patient cost survey tool, participants were interviewed during the intensive phase, continuation phase and post-treatment. We compared income levels, direct and indirect treatment costs, catastrophic costs using Wilcoxon rank-sum and chi-squared tests and associated risk factors between the two cohorts using multivariate *** The pre-treatment median monthly household income was significantly higher in the private sector versus NTP cohort (USD 868 vs USD 578;P=0.010). However, private sector treatment was also significantly costlier (USD 2075 vs USD 1313;P=0.005), driven by direct medical costs which were 4.6 times higher than costs reported by NTP participants (USD 754 vs USD 164;Plted in no significant difference in catastrophic costs between the two cohorts (Private: 55% vs NTP: 52%;P=0.675). Factors associated with catastrophic cost included being a single-person household [adjusted odds ratio [(aOR=13.71; 95% confidence interval (CI): 1.36–138.14;P=0.026], unemployment during treatment (aOR=10.86; 95%CI: 2.64–44.60;Plated stigma (aOR=37.90; 95%CI: 1.72–831.73;P=0.021).Conclusions Persons with TB in Viet Nam face similarly high risk of catastrophic costs whether treated in the

关键词： Tuberculosis Patient cost Catastrophic cost Private sector Comparative analysis Viet Nam

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连花清瘟制剂治疗社区获得性肺炎疗效及安全性的系统评价和Meta分析

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中国实验方剂学杂志 2024年第13期30卷 142-149页

作者：哈雁翔刘欣康世威王烁首都医科大学附属北京中医医院北京100010 河北医科大学第二医院石家庄050000

目的:探究连花清瘟制剂治疗社区获得性肺炎的疗效和安全性。方法:系统检索PubMed、Embase、Cochrane Collaboration、中国知网、维普、万方医学网数据库中所有口服连花清瘟制剂治疗社区获得性肺炎的临床随机对照试验,时间为从建库至2023... 详细信息

目的:探究连花清瘟制剂治疗社区获得性肺炎的疗效和安全性。方法:系统检索PubMed、Embase、Cochrane Collaboration、中国知网、维普、万方医学网数据库中所有口服连花清瘟制剂治疗社区获得性肺炎的临床随机对照试验,时间为从建库至2023年2月,制订纳排标准并对检索结果进行筛选,采用风险评估工具(ROB)量表对最终纳入研究的方法学质量进行评价,使用R软件进行数据合并及Meta分析。结果:共纳入30篇文献,包含2800例患者,在使用抗生素等常规治疗的基础上联合使用连花清瘟,结果显示加用连花清瘟可以提高治愈率[相对危险度(RR)=1.32,95%置信区间(95%CI)[1.23,1.42],P<0.0001]并缩短退热时间[均数差(MD)=-1.45,95%CI[-1.93,-0.97],P<0.0001],以患者群体将退热时间分为普通人群及特殊人群亚组,结果均显示加用连花清瘟可以缩短退热时间(普通人群MD=-1.51,95%CI[-2.07,-0.94],P<0.0001,特殊人群MD=-1.22,95%CI[-2.16,-0.29],P=0.0106),且不会增加不良反应发生率(RR=0.85,95%CI[0.62,1.15],P<0.0001)。使用剪补法补充9篇阴性结果虚拟文献后,加用连花清瘟仍然可以提高CAP的治愈率(RR=1.20,95%CI[1.13,1.29],P<0.0001),结果稳定。结论:CAP治疗中使用抗生素的基础上加用连花清瘟可以提高治愈率并缩短退热时间。

关键词：连花清瘟社区获得性肺炎抗生素治疗疗效安全性系统评价

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Vertically aligned nanocomposite films by self-assembled epitaxial nucleation for super-broadband transparent conductors

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InfoMat 2023年第4期5卷 14-24页

作者： Youngkyoung ha Judith l.MacManus-Driscoll Shinbuhm lee Department of Physics and Chemistry DGISTDaeguRepublic of Korea Department of Emerging Materials Science DGISTDaeguRepublic of Korea Department of Materials Science and Metallurgy University of CambridgeCambridgeUK

Designing super-broadband transparent conductors is challenging because of the exclusive nature of conductivity and infrared ***,using a one-step process,we created vertically aligned nanocomposite conducting films with high transparency across a super-broad wavelength *** aligned transparent Ba_(3)V_(2)O_(8)nanocolumns with lateral-100-nm widths enable high transmittance(>50%,even at a 4-μm wavelength)for all incident light and outperform that of Sn-doped In_(2)O_(3),while the conducting SrVO_(3)matrix retains low resistivity(lectron microscopy,scattering scanning nearfield infrared microscopy,and X-ray diffraction revealed that spontaneous phase separation of Ba_(3)V_(2)O_(8)nanocolumns in a SrVO_(3)matrix film occurs via self-assembled epitaxial *** vertically aligned nanocomposite films provide a fertile platform for next-generation optoelectronics.

关键词： epitaxial nucleation spontaneous phase separation SrVO_(3)-Ba_(3)V_(2)O_(8) super-broadband transparent conductors vertically aligned nanocomposite films

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区域间产业资源置换科教资源的机理研究——以高校异地办学为例

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大学与学科 2024年第3期5卷 74-89页

作者：哈巍林璐北京大学教育经济研究所北京100871

创新驱动发展战略强调加快创新生产要素集聚,发挥东部沿海发达地区的创新引领作用。然而,我国经济发展与高等教育布局之间存在错配现象,部分东部经济发达地区的优质高等教育资源相对匮乏。高校异地办学曾在特定的历史时期发挥了调节作用... 详细信息

创新驱动发展战略强调加快创新生产要素集聚,发挥东部沿海发达地区的创新引领作用。然而,我国经济发展与高等教育布局之间存在错配现象,部分东部经济发达地区的优质高等教育资源相对匮乏。高校异地办学曾在特定的历史时期发挥了调节作用,但也带来中西部地区高等教育资源流失的担忧。近年来叫停异地办学在一定程度上促进了区域协调发展、增强了区域间高等教育的公平,但错配问题依然存在。与此同时,欠发达地区高等教育资源仍在以人才流失等形式被削弱。建议探索在符合国家发展战略需求、建立健全区际高等教育资源与经济资源利益共享机制、对异地办学规模设置上限的前提下,允许一部分欠发达地区以优质高等教育资源置换发达地区的产业资源,同时促进高校流出地和流入地的产业升级转型,开辟创新驱动发展与区域协调发展的一条新路。

关键词：异地办学创新驱动发展区域协调发展治理能力

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血清miR-200a-3p与miR-30a-5p表达在心力衰竭诊断及预后评估中的价值

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心脏杂志 2024年第4期36卷 401-406页

作者：哈斯高娃内蒙古医科大学附属医院老年医学中心一区内蒙古呼和浩特010050

目的分析血清中微小核糖核酸200a-3p(miR-200a-3p)和微小核糖核酸30a-5p(miR-30a-5p)表达在心力衰竭(HF)诊断以及HF患者预后评估中的价值。方法前瞻性选取内蒙古医科大学附属医院2018年4月~2020年4月期间收治的HF患者131例为研究对象(HF... 详细信息

目的分析血清中微小核糖核酸200a-3p(miR-200a-3p)和微小核糖核酸30a-5p(miR-30a-5p)表达在心力衰竭(HF)诊断以及HF患者预后评估中的价值。方法前瞻性选取内蒙古医科大学附属医院2018年4月~2020年4月期间收治的HF患者131例为研究对象(HF组),同时期健康体检志愿者131例为对照组;采用实时荧光定量PCR(qRT-PCR)测定血清中miR-200a-3p和miR-30a-5p表达水平;采用Spearman相关分析血清中miR-200a-3p和miR-30a-5p水平与HF患者病情严重程度的相关性;采用ROC曲线分析血清miR-200a-3p和miR-30a-5p对HF的诊断价值;采用logistic回归分析HF患者预后的影响因素;采用Kaplan-Meier生存分析血清miR-200a-3p和miR-30a-5p表达水平与HF患者预后的关系。结果与对照组相比,HF组血清中miR-200a-3p和miR-30a-5p表达水平显著升高,差异具有统计学意义(Plogistic回归分析结果发现,NT-proBNP、lVEF、lVEDD、miR-200a-3p和miR-30a-5p是HF患者预后的影响因素(Waldχ^(2)=4.321~128.193,Plan-Meier生存分析结果显示,血清中miR-200a-3p和miR-30a-5p高表达患者3年生存率低于miR-200a-3p和miR-30a-5p低表达患者(均P<0.05)。结论HF患者血清中miR-200a-3p和miR-30a-5p表达水平显著升高,二者与HF的发生及患者预后相关。

关键词：心力衰竭 miR-200a-3p miR-30a-5p 诊断预后

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