Nano Life最新文献_第6页

The Expression Pattern of Cypher in the Multiple Organs of Mice Cypher在小鼠多器官中的表达模式

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Nano Life Pub Date : 2021-08-21 DOI: 10.1142/s1793984421400079

Chushan Fang, Siyi Xie, Yujie Gao, Yunfu Sun, Xingqun Liang

引用次数: 0

A Simple Triple-Band Terahertz Metamaterial Absorber Based on Multi-Mode Resonance for Sensing Applications 一种简单的基于多模共振的三波段太赫兹超材料吸波器

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Nano Life Pub Date : 2021-08-20 DOI: 10.1142/s1793984421500045

Fangyong Lou, Jianguo Lei, Jingquan Lin

引用次数: 0

Layered Double Hydroxide Nanomaterials: Biomedical Applications, Current Status and Challenges 层状双氢氧化物纳米材料：生物医学应用、现状和挑战

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Nano Life Pub Date : 2021-08-18 DOI: 10.1142/s1793984421300089

Ritika Sharma, Bhawna, Sanjeev Kumar, Poonam Singh, Akanksha Gupta, Vinod Kumar

引用次数: 3

4D Printing of Self-Folding Hydrogel Tubes for Potential Tissue Engineering Applications 4D打印的自折叠水凝胶管潜在的组织工程应用

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Nano Life Pub Date : 2021-08-14 DOI: 10.1142/s1793984421410014

Yu-Dong Zhao, Jiahui Lai, Min Wang

{"title":"4D Printing of Self-Folding Hydrogel Tubes for Potential Tissue Engineering Applications","authors":"Yu-Dong Zhao, Jiahui Lai, Min Wang","doi":"10.1142/s1793984421410014","DOIUrl":"https://doi.org/10.1142/s1793984421410014","url":null,"abstract":"In recent years, 4D printing has gained increasing attention in the tissue engineering field since this advanced manufacturing platform can create stimulus-responsive structures, which can change their shapes, functions, and/or properties when appropriate external stimulus/stimuli is/are applied. A number of hydrogels with swellable/shrinkable abilities have been explored for 4D printing to fabricate different shape-morphing structures for tissue engineering. Among them, gelatin methacryloyl (GelMA) has been 4D printed, which can self-fold into microtubular structures. Currently, the self-folding ability of 4D printed GelMA hydrogels is mainly based on the different cross-linking degrees (which control and govern the swelling degrees) across the thickness of hydrogels. However, this strategy alone can only form self-folding GelMA tubes with diameters at the micrometer level and cannot create self-folding GelMA tubes with diameters at the millimeter level, which is mainly due to the insufficient internal force generated in 4D printed GelMA hydrogels when they are exposed to water. To overcome this limitation, this study has investigated a new strategy to fabricate self-folding GelMA tubes with large diameters at the millimeter level for tissue engineering applications. The new strategy introduced a cross-linking degree gradient across the GelMA plane in addition to its thickness by printing a second layer of strips on the first 4D printed GelMA film. In the aqueous environment, under the current fabrication condition, such bilayer GelMA hydrogels could self-fold into tubes of larger diameters up to 6[Formula: see text]mm. The in vitro release behavior of heparin incorporated into the 4D printed GelMA was also studied. It was shown that heparin release could be controlled by the GelMA concentration and heparin content in 4D printed GelMA. The 4D printed GelMA hydrogels with the improved self-folding ability and controlled release of a drug are promising for targeted tissue engineering applications.","PeriodicalId":44929,"journal":{"name":"Nano Life","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43530748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Advancement in Nanomaterials for Rapid Sensing, Diagnosis, and Prevention of COVID-19 纳米材料在新冠肺炎快速传感、诊断和预防中的进展

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Nano Life Pub Date : 2021-07-29 DOI: 10.1142/s1793984421300077

D. Das, Anuj Kumar, V. K. Vashistha

引用次数: 0

Fabrication of N-Doped Carbon Quantum Dots/BiOI Nanocomposite and Its Efficient Photocatalytic Activity Under Visible-Light Irradiation n掺杂碳量子点/BiOI纳米复合材料的制备及其可见光下的高效光催化活性

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Nano Life Pub Date : 2021-07-27 DOI: 10.1142/s1793984421500033

Yichang Yu, Ziyuyang Zheng, Wei Liao, Y. Yao, F. Peng, Tingting Chen, J. Wu, Li Feng

{"title":"Fabrication of N-Doped Carbon Quantum Dots/BiOI Nanocomposite and Its Efficient Photocatalytic Activity Under Visible-Light Irradiation","authors":"Yichang Yu, Ziyuyang Zheng, Wei Liao, Y. Yao, F. Peng, Tingting Chen, J. Wu, Li Feng","doi":"10.1142/s1793984421500033","DOIUrl":"https://doi.org/10.1142/s1793984421500033","url":null,"abstract":"A novel spherical N-CQDs/BiOI photocatalyst was successfully synthesized through a facile solvothermal method. The optimization experiments of hydrothermal time and temperature were carried out. The effect of ammonium citrate addition was investigated. The as-synthesized photocatalysts were characterized via X-ray diffraction, scanning and transmission electron microscopy, Fourier transform infrared spectrum and elemental analysis. The adsorption and photocatalytic performance of as-synthesized photocatalysts were studied, 0.2N-CQDs/BiOI showed the best performance. For the removal of anionic dye RhB, adsorption occupied a major position. The maximum adsorption capacity was 97.09[Formula: see text]mg/g for RhB. For the removal of cationic dyes X3B, photocatalysis occupied a major position. The photocatalytic activity of 0.2N-CQDs/BiOI was superior to that of nano-TiO2 under the simulate sunlight irradiation. Different scavengers were used to analyze the effect of active species and photocatalytic degradation mechanism of X3B. The outstanding stability and performance make 0.2N-CQDs/BiOI has highly potential applications in wastewater treatment.","PeriodicalId":44929,"journal":{"name":"Nano Life","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45479716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Contemporary Development on the Performance and Functionalization of Ultra High Molecular Weight Polyethylene (UHMWPE) for Biomedical Implants 超高分子量聚乙烯(UHMWPE)生物医学植入材料性能与功能化的研究进展

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Nano Life Pub Date : 2021-07-27 DOI: 10.1142/s1793984421300090

D. Singh, R. Verma

{"title":"Contemporary Development on the Performance and Functionalization of Ultra High Molecular Weight Polyethylene (UHMWPE) for Biomedical Implants","authors":"D. Singh, R. Verma","doi":"10.1142/s1793984421300090","DOIUrl":"https://doi.org/10.1142/s1793984421300090","url":null,"abstract":"Polymers are widely used in biomedical implants due to their low cost, ability to shape easily in different ways, low friction and strong anti-corrosion properties. Numerous polymers such as polytetrafluoroethylene (PTFE), polyamide (PA), polymethylmethacrylate (PMMA), polyether ether ketone (PEEK), polyurethane (PU), Epoxy and ultra-high-molecular-weight polyethylene (UHMWPE) are used to develop modified biomaterials applications. Among these polymers, UHMWPE stands out as a polymer with superior customization properties to satisfy specific requirements of the human body. Investigations show that the medical-grade and prosthetic product market gained dominance in 2020, accounting for over 30% of global sales. UHMWPE has proven its dominance in tribological applications such as bearings and biomedical components. Despite its exceptional tribological properties, UHMWPE struggles with drawbacks such as poor load-bearing capability and low thermal stability. Researchers are working on various paths to develop UHMWPE composites and hybrid composites with nano/micro fillers to develop a composite framework to address these challenges. This review paper aims to amalgamate the results from these studies. It provides an overview of the studies conducted and their contribution to our current understanding of various routes taken by different researchers to enhance the tribological efficiency of UHMWPE biomaterials. This discussion may inspire the development of low friction and improved wear resistance properties in polymer (UHMWPE) biomaterial composites.","PeriodicalId":44929,"journal":{"name":"Nano Life","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45359429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Near-Field Direct Write Microfiber-Reinforced Collagen Hydrogel Scaffolds for Articular Cartilage Regeneration 近场直写微纤维增强胶原水凝胶支架用于关节软骨再生

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Nano Life Pub Date : 2021-07-27 DOI: 10.1142/s1793984421410026

Zining Wang, Xinliang Ye, Yingxian Lin, Zhishan Tan, Yuming Liu, Jie Li, J. Yin, Dejian Zhu, Mingze Ma, Xiang Wang, B. Lu, Li Wang, Chong Wang

{"title":"Near-Field Direct Write Microfiber-Reinforced Collagen Hydrogel Scaffolds for Articular Cartilage Regeneration","authors":"Zining Wang, Xinliang Ye, Yingxian Lin, Zhishan Tan, Yuming Liu, Jie Li, J. Yin, Dejian Zhu, Mingze Ma, Xiang Wang, B. Lu, Li Wang, Chong Wang","doi":"10.1142/s1793984421410026","DOIUrl":"https://doi.org/10.1142/s1793984421410026","url":null,"abstract":"The demand for treating degenerative osteoarthritis is dramatically growing during the past decade due to the increasing aging population. Compared to arthroscopic debridement and injection of lubricating hydrogels, implantation of a cartilage tissue engineering scaffold with a customized architecture and excellent stem cell delivery ability has been deemed as a superior alternative to regenerate defected cartilage tissues. However, relatively low mechanical strength of cell-laden hydrogel limits its potential in treating diseased/defected cartilage or tissues with an anisotropic structure. In this study, a composite cell-laden scaffold composed of three-dimensional (3D) fibrous patterns which was made through near-field electrospinning direct write (NEDW) and mesenchymal stem cell (MSC)-laden collagen I (COL I) hydrogel was fabricated. The hydrogel acted as a favorable microenvironment to load cells and growth factors to facilitate chondrogenic differentiation while the 3D fibrous patterns made of poly(caprolactone)-reinforced hydrogels and provided the composite scaffolds with a precisely designed micro-architecture. Compared to hydrogel scaffold alone, the fabricated composite scaffold had significantly higher mechanical properties. The composite scaffolds were biocompatible and can accelerate the chondrogenic differentiation of MSCs by up-regulating the expression of SOX9, collagen II (COL II) and aggrecan (ACAN), when transforming growth factor (TGF)-[Formula: see text]1 was loaded in COL I hydrogel. However, the morphology of differentiated cells was not identical to that of the natural chondrocytes, suggesting that the modulation of initial MSC morphology is needed to pursue the target phenotype after the chondrogenic differentiation.","PeriodicalId":44929,"journal":{"name":"Nano Life","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47937614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The New Variants of Corona-Virus Mutations: An Understanding to Their Infectivity, Immunological Tolerance and Vaccine Efficacy 冠状病毒新变异:对其传染性、免疫耐受性和疫苗效力的认识

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Nano Life Pub Date : 2021-07-27 DOI: 10.1142/s1793984421300107

P. Garg

引用次数: 0

Loss of Integrin-Linked Kinase Leads to Dysplasia of the Colon in Mice 整合素连接激酶缺失导致小鼠结肠发育不良

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Nano Life Pub Date : 2021-07-23 DOI: 10.1142/s1793984421400067

Yujie Gao, Siyi Xie, Chushan Fang, Yunfu Sun, Xingqun Liang

引用次数: 0