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Gemini Dressing with Both Super‑hydrophilicity and ‑hydrophobicity Pursuing Isolation of Blood Cells for Hemostasis and Wound Healing

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Advanced Fiber Materials 2023年第4期5卷 1447-1466页

作者： Qing Li Enling Hu Kun Yu Ruiqi Xie Fei Lu Bitao Lu Rong Bao Fangyin Dai guangqian lan State Key Laboratory of Silkworm Genome Biology College of Sericulture Textile and Biomass ScienceSouthwest UniversityChongqing 400715China Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile Chongqing 400715China The Ninth People’s Hospital of Chongqing No.69 Jialing VillageBeiBei DistrictChongqing 400715China

Achieving efficient hemostasis and wound management is vital to preserve life and restore health in case of extensive hemor-rhagic skin ***,we develop a filter pump-like hierarchical porous-structure(HPS)dressing based on a non-woven substrate,konjac glucomannan(KGM)aerogel,and bi-functional microporous starch(BMS).The KGM aerogel intercalates into the non-woven network structure,forming a hydrophilic frame to stimulate the plasma permeation toward the interior in synergy with the hydrophilic pores of the *** BMS surface forms a hydrophobic matrix that fills the spaces of the KGM hydrophilic frame,contributing to the isolation and aggregation of blood cells on the surface of the HPS dressing to establish rapid *** model experiments suggest reliable HPS dressing hemostatic capacity,as it is able to stop ear artery and liver bleeding within 97.6±15.2 s and 67.8±5.4 s,***,the dressings exhibit antibacterial properties and enabled wound healing within 2 *** vitro hemolysis and cytotoxicity tests also confirm the biocompatibility of HPS *** novel“two-in-one”hemostatic dressing facilitates tissue repair of bleeding wounds over the entire recovery period,thereby providing a convenient strategy for wound management.

关键词： Hierarchical porous-structure Blood cell isolation Hemostasis Antibacterial activity Wound healing

Erythrocyte membrane-camouflaged nanoworms with on-demand antibiotic release for eradicating biofilms using near-infrared irradiation

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Bioactive Materials 2021年第9期6卷 2956-2968页

作者： Luoxiao Ran Bitao Lu Haoyu Qiu Guofang Zhou Jing Jiang Enling Hu Fangyin Dai guangqian lan State Key Laboratory of Silkworm Genome Biology College of SericultureTextile and Biomass SciencesSouthwest UniversityChongqing400715China Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile Chongqing400715China Chongqing General Hospital University of Chinese Academy of Sciences No.118Xingguang AvenueLiangjiang New AreaChongqingChina

The increase in the number of resistant bacteria caused by the abuse of antibiotics and the emergence of biofilms significantly reduce the effectiveness of *** infections are detrimental to our life and *** reduce the abuse of antibiotics and treat biofilm-related bacterial infections,a biomimetic nano-antibacterial system,RBCM-NW-G namely,that controls the release of antibiotics through near infrared was *** hollow porous structure and the high surface activity of nanoworms are used to realize antibiotic loading,and then,biomimetics are applied with red blood cell membranes(RBCM).RBCM-NW-G,which retains the performance of RBCM,shows enhanced permeability and retention *** imaging in mice showed the effective accumulation of RBCM-NW-G at the site of *** addition,the biomimetic nanoparticles showed a longer blood circulation time and good ***-biofilm test results showed damage to biofilms due to a photothermal effect and a highly efficient antibacterial performance under the synergy of the photothermal effect,silver iron,and ***,by constructing a mouse infection model,the great potential of RBCM-NW-G in the treatment of in vivo infections was confirmed.

关键词： Red blood cell membrane Nanoworms Antibiotics release Bacterial infection

Microcluster colloidosomes for hemostat delivery into complex wounds:A platform inspired by the attack action of torpedoes

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Bioactive Materials 2022年第10期7卷 372-387页

作者： Bitao Lu Enling Hu Ruiqi Xie Kun Yu Fei Lu Rong Bao Chenhui Wang guangqian lan Fangyin Dai State Key Laboratory of Silkworm Genome Biology College of SericultureTextile and Biomass SciencesSouthwest UniversityChongqing400715China Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile Chongqing400715China The Ninth People’s Hospital of Chongqing No.69 Jialing Village BeiBei DistrictChongqing400715China Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical SciencesChongqing University55 South Daxuecheng RoadChongqing401331China

Complex yet lethal wounds with uncontrollable bleeding hinder conventional hemostats from clotting blood at the source or deep sites of injury vasculature,thereby causing massive blood loss and significantly increased *** by the attack action of torpedoes,we synthesized microcluster(MC)colloidosomes equipped with magnetic-mediated navigation and“blast”systems to deliver hemostats into the cavity of vase-type ***_(3)/Fe_(2)O_(3)(CF)microparticles functionalized with Arg-Gly-Asp(RGD)modified polyelectrolyte multilayers were co-assembled with oppositely charged zwitterionic carbon dots(CDs)to form MC colloidosomes,which were loaded with thrombin and protonated tranexamic acid(TXA-NH_(3)^(+)).The composite microparticles moved against blood flow under magnetic mediation and simultaneously disassembled for the burst release of thrombin stimulated by TXA-NH_(3)^(+).The CO_(2) bubbles generated during disassembly produced a“blast”that propelled thrombin into the wound *** bleeding in a vase-type hemorrhage model in the rabbit liver was rapidly controlled within~60 ***,in vivo subcutaneous muscle and liver implantation models demonstrated excellent biodegradability of MC *** study is the first to propose a novel strategy based on the principle of torpedoes for transporting hemostats into vase-type wounds to achieve rapid hemostasis,creating a new paradigm for combating trauma treatment.

关键词： Torpedoes-inspired Microcluster colloidosomes Magnetic guidance Disintegration Hemostasis

Magnetic field-mediated Janus particles with sustained driving capability for severe bleeding control in perforating and inflected wounds

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Bioactive Materials 2021年第12期6卷 4625-4639页

作者： Qing Li Enling Hu Kun Yu Mengxing Lu Ruiqi Xie Fei Lu Bitao Lu Rong Bao guangqian lan State Key Laboratory of Silkworm Genome Biology College of SericultureTextile and Biomass SciencesSouthwest UniversityChongqing400715China Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile Chongqing400715China The Ninth People’s Hospital of Chongqing No.69 Jialing VillageBeiBei DistrictChongqing400715China

Severe bleeding in perforating and inflected wounds with forky cavities or fine voids encountered during prehospital treatments and surgical procedures is a complex ***,we present a novel hemostatic strategy based on magnetic field-mediated *** biphasic Janus magnetic particle(MSS@Fe2O3-T)comprised aggregates ofα-Fe2O3 nanoparticles(Fe_(2)O_(3) NPs)as the motion actuator,negatively modified microporous starch(MSS)as the base hemostatic substrate,and thrombin as the loaded hemostatic *** application,the particles were first wrapped using NaHCO_(3) and then doped with protonated tranexamic acid(TXA-NH_(3)^(+)),which ensured their high self-dispersibility in *** application,the particles promptly self-diffused in blood by bubble propulsion and travelled to deep bleeding sites against reverse rushing blood flow under magnetic *** vivo tests confirmed the superior hemostatic performance of the particles in perforating and inflected wounds(“V”-shaped femoral artery and“J”-shaped liver bleeding models).The present strategy,for the first time,extends the range of magnetically guided drug carriers to address the challenges in the hemorrhage control of perforating and inflected wounds.

关键词： Janus particle Sustained driving Magnetic guidance Hemostasis Complex wound

Dual-Driven Hemostats Featured with Puncturing Erythrocytes for Severe Bleeding in Complex Wounds

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Research 2022年第4期2022卷 119-135页

作者： Haoyu Qiu guangqian lan Weiwei Ding Xinyu Wang Wenyi Wang Dahua Shou Fei Lu Enling Hu Kun Yu Songmin Shang Ruiqi Xie State Key Laboratory of ilkworm Genome Biology College of SericultureTextile and Biomass SciencesSouthwest UniversityChongqing 400715China Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile Chongqing 400715China Division of Trauma and Surgical Intensive Care Unit Research Institute of General SurgeryJinling HospitalMedical School of Nanjing UniversityNanjing210002 Jiangsu ProvinceChina Institute of Textiles and Clothing The Hong Kong Polytechnic UniversityKowloonHong Kong

Achieving rapid hemostasis in complex and deep wounds with secluded hemorrhagic sites is still a challenge because of the difficulty in delivering hemostats to these *** this study,a Janus particle,SEC-Fe@CaT with dual-driven forces,bubble-driving,and magnetic field–(MF–)mediated driving,was prepared via in situ loading of Fe_(3)O_(4) on a sunflower sporopollenin exine capsule(SEC),and followed by growth of flower-shaped CaCO3 *** bubble-driving forces enabled SEC-Fe@CaT to self-diffuse in the blood to eliminate agglomeration,and the MF-mediated driving force facilitated the SEC-Fe@CaT countercurrent against blood to access deep bleeding sites in the *** the movement in blood flow,the meteor hammer-like SEC from SEC-Fe@CaT can puncture red blood cells(RBCs)to release procoagulants,thus promoting activation of platelet and rapid *** tests suggested that SEC-Fe@CaT stopped bleeding in as short as 30 and 45 s in femoral artery and liver hemorrhage models,*** contrast,the similar commercial product Celox™required approximately 70 s to stop the bleeding in both bleeding *** study demonstrates a new hemostat platform for rapid hemostasis in deep and complex *** was the first attempt integrating geometric structure of sunflower pollen with dual-driven movement in hemostasis.

关键词： driving bubble eliminate

紫外线辐照棉织物接枝壳聚糖改性及其性能分析

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纺织学报 2010年第7期31卷 79-84页

作者：汪涛蓝广芊敬凌霄吴大洋西南大学纺织服装学院重庆400716

以柠檬酸(CA)为交联剂,以磷酸二氢钠为催化剂,对紫外线辐照棉织物接枝壳聚糖(CS)。研究了柠檬酸的质量浓度和水浴处理时间对壳聚糖接枝率的影响,得出最佳处理条件:15 g/L CS,100 g/L CA,20 g/L磷酸二氢钠,70℃水浴下煮60 min,然后130℃... 详细信息

以柠檬酸(CA)为交联剂,以磷酸二氢钠为催化剂,对紫外线辐照棉织物接枝壳聚糖(CS)。研究了柠檬酸的质量浓度和水浴处理时间对壳聚糖接枝率的影响,得出最佳处理条件:15 g/L CS,100 g/L CA,20 g/L磷酸二氢钠,70℃水浴下煮60 min,然后130℃干燥5 min,室温真空干燥24 h,壳聚糖接枝率为2.69%。对比了改性前后棉织物的染色性能、透湿透气性、折皱弹性和柔软性。结果表明:改性后棉织物的染料上染率为93.5%,较未处理的棉织物提高了20%,染色深度K/S值也提高了24%,而染色牢度没有改善;改性棉织物的透湿性能提高14%,但透气性能下降15%;改性棉织物的折皱弹性均有提高,其中急弹性回复角提高26.3%,缓弹性回复角提高14.7%;改性棉织物的柔软性略有下降。总体来说,接枝壳聚糖改性棉织物的整体性能有所提高。

关键词：壳聚糖棉织物柠檬酸改性性能

CONVERGENCE OF MODIFIED TRUNCATED EULER-MARUYAMA METHOD FOR STOCHASTIC DIFFERENTIAL EQUATIONS WITH HOLDER DIFFUSION COEFFICIENTS

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Journal of Computational Mathematics 2024年第4期42卷 1109-1123页

作者： guangqiang lan Yu Jiang College of Mathematics and Physics Beijing University of Chemical TechnologyBeijing 100029China

Convergence of modified truncated Euler-Maruyama(MTEM)method for stochastic differential equations(SDEs)with(1/2+α)-Holder continuous diffusion coefficients are investigated in this *** prove that the MTEM method for... 详细信息

关键词： Stochastic differential equations Modified truncated Euler-Maruyama method Strong convergence One-sided Lipschitz Holder continuous

A direct electrochemical biosensor for rapid glucose detection based on nitrogen-doped carbon nanocages

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Rare Metals 2024年第5期43卷 2184-2192页

作者： lan-lan Li Yu Zhao Li-Jia Pan Jian-Bin Xu Yi Shi College of Mechanical and Electrical Engineering Henan Agricultural UniversityZhengzhou 450002China School of Electronic Science and Engineering Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China Department of Electronic Engineering The Chinese University of HongKongHongkong 999077China

Given the increasing number of diabetic patients,rapid and accurate detection of glucose in body fluids is *** study developed a direct electrochemical biosensor for glucose based on nitrogen-doped carbon nanocages(NCNCs).NCNCs possess a large specific surface area of 1395 m^(2)·g^(-1),a high N atomic content of 9.37%and good biocompatibility,which is favorable for enzyme loading and electron *** surface average concentration of electroactive glucose oxidase on NCNCs was 2.82×10^(-10)mol·cm^(-2).The NCNC-based direct electrochemical biosensor exhibited a high sensitivity of 13.7μA·(mmol·L^(-1))^(-1)·cm^(-2),rapid response time of 5 s and an impressive electron-transferrate constant(ks)of 1.87 s^(-1).Furthermore,we investigated an NCNC-based direct electron transfer(DET)biosensor for sweat glucose detection,which demonstrated tremendous promise for non-invasive wearable diabetes diagnosis.

关键词： Direct electron transfer(DET) Nitrogen-doped carbon nanocages(NCNCs) Glucose oxidase Biosensor

A Scalable Pillar Layered Metal-Organic Framework for Natural Gas Purification

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Chemical Research in Chinese Universities 2024年第4期40卷 675-681页

作者： LU Nan lan lan GAO Qiang LI Na BU Xian-He School of Materials Science and Engineering Nankai UniversityTianjin300350P.R.China State Key Laboratory of Elemento-Organic Chemistry College of ChemistryNankai UniversityTianjin300071P.R.China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang212003P.R.China

One-step harvest of high-purity methane(CH_(4))from ternary propane/ethane/methane(C_(3)H_(8)/C_(2)H_(6)/CH_(4))mixtures remains a desirable yet challenging goal for natural gas ***,adsorbents either suffer from high capacity and selectivity,or are caught in a dilemma of scalable ***,we demonstrate a scalable pillar layered metal-organic framework Ni-MOF for highly efficient one-step CH_(4)***-MOF exhibits high C_(2)H_(6)and C_(3)H_(8)uptakes of 83.3 and 86.1 cm^(3)/g at 298 K and 100 kPa and remarkable C_(2)H_(6)/CH_(4)(50/50,volume ratio,21.5)and C_(3)H_(8)/CH_(4)(50/50,volume ratio,212.0)***,high C_(2)H_(6)(42.2 cm^(3)/g at 10 kPa)and C_(3)H_(8)(64.7 cm^(3)/g at 5 kPa)capacities in the low-pressure region at 298 K were realized on Ni-MOF,suggesting the strong affinities of Ni-MOF towards C_(2)H_(6)and C_(3)H_(8).Furthermore,the dynamic breakthrough experiments revealed that purifying CH_(4)from natural gas in one-step can be achieved in Ni-MOF with high-purity(>99.8%)and productivity(346.0 cm^(3)/g).Most significantly,the production of Ni-MOF can be scalably synthesized at room temperature,rendering it promising potential for industrial *** combined advantages of exceptional separation performance,scalability,and cycle stability of Ni-MOF pave the way for one-step CH_(4)purification from natural gas.

关键词： Metal-organic framework Adsorption and separation Natural gas purification Scale-up synthesis