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Wang Y, Geng Q, Lyu H, Sun W, Fan X, Ma K, Wu K, Wang J, Wang Y, Mei D, Guo C, Xiu P, Pan D, Tao K. Bioinspired Flexible Hydrogelation with Programmable Properties for Tactile Sensing. Adv Mater 2024:e2401678. [PMID: 38678380 DOI: 10.1002/adma.202401678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/20/2024] [Indexed: 04/29/2024]
Abstract
Tactile sensing requires integrated detection platforms with distributed and highly sensitive haptic sensing capabilities along with biocompatibility, aiming to replicate the physiological functions of the human skin and empower industrial robotic and prosthetic wearers to detect tactile information. In this regard, short peptide-based self-assembled hydrogels show promising potential to act as bioinspired supramolecular substrates for developing tactile sensors showing biocompatibility and biodegradability. However, the intrinsic difficulty to modulate the mechanical properties severely restricts their extensive employment. Herein, by controlling the self-assembly of 9-fluorenylmethoxycarbonyl-modifid diphenylalanine (Fmoc-FF) through introduction of polyethylene glycol diacrylate (PEGDA), wider nanoribbons are achieved by untwisting from well-established thinner nanofibers, and the mechanical properties of the supramolecular hydrogels can be enhanced 10-fold, supplying bioinspired supramolecular encapsulating substrate for tactile sensing. Furthermore, by doping with poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and 9-fluorenylmethoxycarbonyl-modifid 3,4-dihydroxy-l-phenylalanine (Fmoc-DOPA), the Fmoc-FF self-assembled hydrogels can be engineered to be conductive and adhesive, providing bioinspired sensing units and adhesive layer for tactile sensing applications. Therefore, the integration of these modules results in peptide hydrogelation-based tactile sensors, showing high sensitivity and sustainable responses with intrinsic biocompatibility and biodegradability. The findings establish the feasibility of developing programmable peptide self-assembly with adjustable features for tactile sensing applications.
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Affiliation(s)
- Yunxiao Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
- Joint Laboratory of Bio-Organic Dielectrics, Hangzhou, 310058, China
| | - Qiang Geng
- State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
- Joint Laboratory of Bio-Organic Dielectrics, Hangzhou, 310058, China
| | - Hao Lyu
- School of Engineering, Westlake University, Hangzhou, Zhejiang, 310030, China
| | - Wuxuepeng Sun
- Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Xinyuan Fan
- State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
- Joint Laboratory of Bio-Organic Dielectrics, Hangzhou, 310058, China
| | - Kang Ma
- State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
- Joint Laboratory of Bio-Organic Dielectrics, Hangzhou, 310058, China
| | - Kai Wu
- Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Jinhe Wang
- Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
- Joint Laboratory of Bio-Organic Dielectrics, Hangzhou, 310058, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Chengchen Guo
- School of Engineering, Westlake University, Hangzhou, Zhejiang, 310030, China
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, China
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, 310024, China
| | - Peng Xiu
- Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Dingyi Pan
- Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Kai Tao
- State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
- Joint Laboratory of Bio-Organic Dielectrics, Hangzhou, 310058, China
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Abstract
Precision medicine is an old concept, but it is not widely applied across human health conditions as yet. Numerous attempts have been made to apply precision medicine in epilepsy, this has been based on a better understanding of aetiological mechanisms and deconstructing disease into multiple biological subsets. The scope of precision medicine is to provide effective strategies for treating individual patients with specific agent(s) that are likely to work best based on the causal biological make-up. We provide an overview of the main applications of precision medicine in epilepsy, including the current limitations and pitfalls, and propose potential strategies for implementation and to achieve a higher rate of success in patient care. Such strategies include establishing a definition of precision medicine and its outcomes; learning from past experiences, from failures and from other fields (e.g. oncology); using appropriate precision medicine strategies (e.g. drug repurposing versus traditional drug discovery process); and using adequate methods to assess efficacy (e.g. randomised controlled trials versus alternative trial designs). Although the progress of diagnostic techniques now allows comprehensive characterisation of each individual epilepsy condition from a molecular, biological, structural and clinical perspective, there remain challenges in the integration of individual data in clinical practice to achieve effective applications of precision medicine in this domain.
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Affiliation(s)
- S Balestrini
- Neuroscience Department, Meyer Children's Hospital IRCSS, Florence, Italy
- University of Florence, Florence, Italy
- Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, London, UK
- Chalfont Centre for Epilepsy, Chalfont St Peter, UK
| | - D Mei
- Neuroscience Department, Meyer Children's Hospital IRCSS, Florence, Italy
| | - S M Sisodiya
- Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, London, UK
- Chalfont Centre for Epilepsy, Chalfont St Peter, UK
| | - Renzo Guerrini
- Neuroscience Department, Meyer Children's Hospital IRCSS, Florence, Italy.
- University of Florence, Florence, Italy.
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Wang Y, Geng Q, Zhang Y, Adler-Abramovich L, Fan X, Mei D, Gazit E, Tao K. Fmoc-diphenylalanine gelating nanoarchitectonics: A simplistic peptide self-assembly to meet complex applications. J Colloid Interface Sci 2023; 636:113-133. [PMID: 36623365 DOI: 10.1016/j.jcis.2022.12.166] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/19/2022] [Accepted: 12/30/2022] [Indexed: 01/05/2023]
Abstract
9-fluorenylmethoxycarbonyl-diphenylalanine (Fmoc-FF), has been has been extensively explored due to its ultrafast self-assembly kinetics, inherent biocompatibility, tunable physicochemical properties, and especially, the capability of forming self-sustained gels under physiological conditions. Consequently, various methodologies to develop Fmoc-FF gels and their corresponding applications in biomedical and industrial fields have been extensively studied. Herein, we systemically summarize the mechanisms underlying Fmoc-FF self-assembly, discuss the preparation methodologies of Fmoc-FF hydrogels, and then deliberate the properties as well as the diverse applications of Fmoc-FF self-assemblies. Finally, the contemporary shortcomings which limit the development of Fmoc-FF self-assembly are raised and the alternative solutions are proposed, along with future research perspectives.
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Affiliation(s)
- Yunxiao Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China; Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, Hangzhou 311200, China
| | - Qiang Geng
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China
| | - Yan Zhang
- Centre for Bioengineering and Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Lihi Adler-Abramovich
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel; The Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv 6997801, Israel; Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, Hangzhou 311200, China.
| | - Xinyuan Fan
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, Hangzhou 311200, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Ehud Gazit
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel; Department of Materials Science and Engineering, Iby and Aladar Fleischman, Tel Aviv University, 6997801 Tel Aviv, Israel; Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, Hangzhou 311200, China.
| | - Kai Tao
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China; Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, Hangzhou 311200, China.
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Pan H, Mei D, Xu C, Li X, Wang Y. Acoustic tweezers using bisymmetric coherent surface acoustic waves for dynamic and reconfigurable manipulation of particle multimers. J Colloid Interface Sci 2023; 643:115-123. [PMID: 37058887 DOI: 10.1016/j.jcis.2023.04.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/02/2023] [Accepted: 04/05/2023] [Indexed: 04/16/2023]
Abstract
HYPOTHESIS The accurate and dynamic manipulation of multiple micro-sized objects has always been a technical challenge in areas of colloid assembly, tissue engineering, and organ regeneration. The hypothesis of this paper is the precise modulation and parallel manipulation of morphology of individual and multiple colloidal multimers can be achieved by customizing acoustic field. EXPERIMENTS Herein, we present a colloidal multimer manipulation method by using acoustic tweezers with bisymmetric coherent surface acoustic waves (SAWs), which enables contactless morphology modulation of individual colloidal multimers and patterning arrays by regulating the shape of acoustic field to specific desired distributions with high accuracy. Rapid switching of multimer patterning arrays, morphology modulation of individual multimers, and controllable rotation can be achieved by regulating coherent wave vector configurations and phase relations in real time. FINDINGS To demonstrate the capabilities of this technology, we have firstly achieved eleven patterns of deterministic morphology switching for single hexamer and precise switching between three array modes. In addition, the assembly of multimers with three kinds of specific widths and controllable rotation of single multimers and arrays were demonstrated from 0 to 22.4 rpm (tetramers). Therefore, this technique enables reversible assembly and dynamic manipulation of particles and/or cells in colloid synthesis applications.
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Affiliation(s)
- Hemin Pan
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chengyao Xu
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xin Li
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China.
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Gan PXL, Liao W, Linke KM, Mei D, Wu XD, Wong WSF. Targeting the renin angiotensin system for respiratory diseases. Adv Pharmacol 2023; 98:111-144. [PMID: 37524485 DOI: 10.1016/bs.apha.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Renin-angiotensin system (RAS) plays an indispensable role in regulating blood pressure through its effects on fluid and electrolyte balance. As an aside, cumulative evidence from experimental to clinical studies supports the notion that dysregulation of RAS contributes to the pro-inflammatory, pro-oxidative, and pro-fibrotic processes that occur in pulmonary diseases like asthma, chronic obstructive pulmonary disease (COPD), idiopathic pulmonary fibrosis (IPF), and acute lung injury (ALI). Pharmacological intervention of the various RAS components can be a novel therapeutic strategy for the treatment of these respiratory diseases. In this chapter, we first give a recent update on the RAS, and then compile, review, and analyse recent reports on targeting RAS components as treatments for respiratory diseases. Inhibition of the pro-inflammatory renin, angiotensin-converting enzyme (ACE), angiotensin (Ang) II, and Ang II type 1 receptor (AT1R) axis, and activation of the protective ACE2, AT2R, Ang (1-7), and Mas receptor axis have demonstrated varying degrees of efficacies in experimental respiratory disease models or in human trials. The newly identified alamandine/Mas-related G-protein-coupled receptor member D pathway has shown some therapeutic promise as well. However, our understanding of the RAS ligand-and-receptor interactions is still inconclusive, and the modes of action and signaling cascade mediating the newly identified RAS receptors remain to be better characterized. Clinical data are obviously lacking behind the promising pre-clinical findings of certain well-established molecules targeting at different pathways of the RAS in respiratory diseases. Translational human studies should be the focus for RAS drug development in lung diseases in the next decade.
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Affiliation(s)
- Phyllis X L Gan
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore, Singapore
| | - W Liao
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore, Singapore; Singapore-HUJ Alliance for Research Enterprise, National University of Singapore, Singapore, Singapore
| | - Kira M Linke
- Department of Pharmacology, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - D Mei
- Department of Respiratory and Critical Care Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, P.R. China
| | - X D Wu
- Department of Respiratory and Critical Care Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, P.R. China
| | - W S Fred Wong
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore, Singapore; Singapore-HUJ Alliance for Research Enterprise, National University of Singapore, Singapore, Singapore; Drug Discovery and Optimization Platform, National University Health System, Singapore, Singapore.
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Girardi F, Matz M, Stiller C, You H, Marcos Gragera R, Valkov MY, Bulliard JL, De P, Morrison D, Wanner M, O'Brian DK, Saint-Jacques N, Coleman MP, Allemani C, Hamdi-Chérif M, Kara L, Meguenni K, Regagba D, Bayo S, Cheick Bougadari T, Manraj SS, Bendahhou K, Ladipo A, Ogunbiyi OJ, Somdyala NIM, Chaplin MA, Moreno F, Calabrano GH, Espinola SB, Carballo Quintero B, Fita R, Laspada WD, Ibañez SG, Lima CA, Da Costa AM, De Souza PCF, Chaves J, Laporte CA, Curado MP, de Oliveira JC, Veneziano CLA, Veneziano DB, Almeida ABM, Latorre MRDO, Rebelo MS, Santos MO, Azevedo e Silva G, Galaz JC, Aparicio Aravena M, Sanhueza Monsalve J, Herrmann DA, Vargas S, Herrera VM, Uribe CJ, Bravo LE, Garcia LS, Arias-Ortiz NE, Morantes D, Jurado DM, Yépez Chamorro MC, Delgado S, Ramirez M, Galán Alvarez YH, Torres P, Martínez-Reyes F, Jaramillo L, Quinto R, Castillo J, Mendoza M, Cueva P, Yépez JG, Bhakkan B, Deloumeaux J, Joachim C, Macni J, Carrillo R, Shalkow Klincovstein J, Rivera Gomez R, Perez P, Poquioma E, Tortolero-Luna G, Zavala D, Alonso R, Barrios E, Eckstrand A, Nikiforuk C, Woods RR, Noonan G, Turner D, Kumar E, Zhang B, Dowden JJ, Doyle GP, Saint-Jacques N, Walsh G, Anam A, De P, McClure CA, Vriends KA, Bertrand C, Ramanakumar AV, Davis L, Kozie S, Freeman T, George JT, Avila RM, O’Brien DK, Holt A, Almon L, Kwong S, Morris C, Rycroft R, Mueller L, Phillips CE, Brown H, Cromartie B, Ruterbusch J, Schwartz AG, Levin GM, Wohler B, Bayakly R, Ward KC, Gomez SL, McKinley M, Cress R, Davis J, Hernandez B, Johnson CJ, Morawski BM, Ruppert LP, Bentler S, Charlton ME, Huang B, Tucker TC, Deapen D, Liu L, Hsieh MC, Wu XC, Schwenn M, Stern K, Gershman ST, Knowlton RC, Alverson G, Weaver T, Desai J, Rogers DB, Jackson-Thompson J, Lemons D, Zimmerman HJ, Hood M, Roberts-Johnson J, Hammond W, Rees JR, Pawlish KS, Stroup A, Key C, Wiggins C, Kahn AR, Schymura MJ, Radhakrishnan S, Rao C, Giljahn LK, Slocumb RM, Dabbs C, Espinoza RE, Aird KG, Beran T, Rubertone JJ, Slack SJ, Oh J, Janes TA, Schwartz SM, Chiodini SC, Hurley DM, Whiteside MA, Rai S, Williams MA, Herget K, Sweeney C, Kachajian J, Keitheri Cheteri MB, Migliore Santiago P, Blankenship SE, Conaway JL, Borchers R, Malicki R, Espinoza J, Grandpre J, Weir HK, Wilson R, Edwards BK, Mariotto A, Rodriguez-Galindo C, Wang N, Yang L, Chen JS, Zhou Y, He YT, Song GH, Gu XP, Mei D, Mu HJ, Ge HM, Wu TH, Li YY, Zhao DL, Jin F, Zhang JH, Zhu FD, Junhua Q, Yang YL, Jiang CX, Biao W, Wang J, Li QL, Yi H, Zhou X, Dong J, Li W, Fu FX, Liu SZ, Chen JG, Zhu J, Li YH, Lu YQ, Fan M, Huang SQ, Guo GP, Zhaolai H, Wei K, Chen WQ, Wei W, Zeng H, Demetriou AV, Mang WK, Ngan KC, Kataki AC, Krishnatreya M, Jayalekshmi PA, Sebastian P, George PS, Mathew A, Nandakumar A, Malekzadeh R, Roshandel G, Keinan-Boker L, Silverman BG, Ito H, Koyanagi Y, Sato M, Tobori F, Nakata I, Teramoto N, Hattori M, Kaizaki Y, Moki F, Sugiyama H, Utada M, Nishimura M, Yoshida K, Kurosawa K, Nemoto Y, Narimatsu H, Sakaguchi M, Kanemura S, Naito M, Narisawa R, Miyashiro I, Nakata K, Mori D, Yoshitake M, Oki I, Fukushima N, Shibata A, Iwasa K, Ono C, Matsuda T, Nimri O, Jung KW, Won YJ, Alawadhi E, Elbasmi A, Ab Manan A, Adam F, Nansalmaa E, Tudev U, Ochir C, Al Khater AM, El Mistiri MM, Lim GH, Teo YY, Chiang CJ, Lee WC, Buasom R, Sangrajrang S, Suwanrungruang K, Vatanasapt P, Daoprasert K, Pongnikorn D, Leklob A, Sangkitipaiboon S, Geater SL, Sriplung H, Ceylan O, Kög I, Dirican O, Köse T, Gurbuz T, Karaşahin FE, Turhan D, Aktaş U, Halat Y, Eser S, Yakut CI, Altinisik M, Cavusoglu Y, Türkköylü A, Üçüncü N, Hackl M, Zborovskaya AA, Aleinikova OV, Henau K, Van Eycken L, Atanasov TY, Valerianova Z, Šekerija M, Dušek L, Zvolský M, Steinrud Mørch L, Storm H, Wessel Skovlund C, Innos K, Mägi M, Malila N, Seppä K, Jégu J, Velten M, Cornet E, Troussard X, Bouvier AM, Guizard AV, Bouvier V, Launoy G, Dabakuyo Yonli S, Poillot ML, Maynadié M, Mounier M, Vaconnet L, Woronoff AS, Daoulas M, Robaszkiewicz M, Clavel J, Poulalhon C, Desandes E, Lacour B, Baldi I, Amadeo B, Coureau G, Monnereau A, Orazio S, Audoin M, D’Almeida TC, Boyer S, Hammas K, Trétarre B, Colonna M, Delafosse P, Plouvier S, Cowppli-Bony A, Molinié F, Bara S, Ganry O, Lapôtre-Ledoux B, Daubisse-Marliac L, Bossard N, Uhry Z, Estève J, Stabenow R, Wilsdorf-Köhler H, Eberle A, Luttmann S, Löhden I, Nennecke AL, Kieschke J, Sirri E, Justenhoven C, Reinwald F, Holleczek B, Eisemann N, Katalinic A, Asquez RA, Kumar V, Petridou E, Ólafsdóttir EJ, Tryggvadóttir L, Murray DE, Walsh PM, Sundseth H, Harney M, Mazzoleni G, Vittadello F, Coviello E, Cuccaro F, Galasso R, Sampietro G, Giacomin A, Magoni M, Ardizzone A, D’Argenzio A, Di Prima AA, Ippolito A, Lavecchia AM, Sutera Sardo A, Gola G, Ballotari P, Giacomazzi E, Ferretti S, Dal Maso L, Serraino D, Celesia MV, Filiberti RA, Pannozzo F, Melcarne A, Quarta F, Andreano A, Russo AG, Carrozzi G, Cirilli C, Cavalieri d’Oro L, Rognoni M, Fusco M, Vitale MF, Usala M, Cusimano R, Mazzucco W, Michiara M, Sgargi P, Boschetti L, Marguati S, Chiaranda G, Seghini P, Maule MM, Merletti F, Spata E, Tumino R, Mancuso P, Cassetti T, Sassatelli R, Falcini F, Giorgetti S, Caiazzo AL, Cavallo R, Piras D, Bella F, Madeddu A, Fanetti AC, Maspero S, Carone S, Mincuzzi A, Candela G, Scuderi T, Gentilini MA, Rizzello R, Rosso S, Caldarella A, Intrieri T, Bianconi F, Contiero P, Tagliabue G, Rugge M, Zorzi M, Beggiato S, Brustolin A, Gatta G, De Angelis R, Vicentini M, Zanetti R, Stracci F, Maurina A, Oniščuka M, Mousavi M, Steponaviciene L, Vincerževskienė I, Azzopardi MJ, Calleja N, Siesling S, Visser O, Johannesen TB, Larønningen S, Trojanowski M, Macek P, Mierzwa T, Rachtan J, Rosińska A, Kępska K, Kościańska B, Barna K, Sulkowska U, Gebauer T, Łapińska JB, Wójcik-Tomaszewska J, Motnyk M, Patro A, Gos A, Sikorska K, Bielska-Lasota M, Didkowska JA, Wojciechowska U, Forjaz de Lacerda G, Rego RA, Carrito B, Pais A, Bento MJ, Rodrigues J, Lourenço A, Mayer-da-Silva A, Coza D, Todescu AI, Valkov MY, Gusenkova L, Lazarevich O, Prudnikova O, Vjushkov DM, Egorova A, Orlov A, Pikalova LV, Zhuikova LD, Adamcik J, Safaei Diba C, Zadnik V, Žagar T, De-La-Cruz M, Lopez-de-Munain A, Aleman A, Rojas D, Chillarón RJ, Navarro AIM, Marcos-Gragera R, Puigdemont M, Rodríguez-Barranco M, Sánchez Perez MJ, Franch Sureda P, Ramos Montserrat M, Chirlaque López MD, Sánchez Gil A, Ardanaz E, Guevara M, Cañete-Nieto A, Peris-Bonet R, Carulla M, Galceran J, Almela F, Sabater C, Khan S, Pettersson D, Dickman P, Staehelin K, Struchen B, Egger Hayoz C, Rapiti E, Schaffar R, Went P, Mousavi SM, Bulliard JL, Maspoli-Conconi M, Kuehni CE, Redmond SM, Bordoni A, Ortelli L, Chiolero A, Konzelmann I, Rohrmann S, Wanner M, Broggio J, Rashbass J, Stiller C, Fitzpatrick D, Gavin A, Morrison DS, Thomson CS, Greene G, Huws DW, Grayson M, Rawcliffe H, Allemani C, Coleman MP, Di Carlo V, Girardi F, Matz M, Minicozzi P, Sanz N, Ssenyonga N, James D, Stephens R, Chalker E, Smith M, Gugusheff J, You H, Qin Li S, Dugdale S, Moore J, Philpot S, Pfeiffer R, Thomas H, Silva Ragaini B, Venn AJ, Evans SM, Te Marvelde L, Savietto V, Trevithick R, Aitken J, Currow D, Fowler C, Lewis C. Global survival trends for brain tumors, by histology: analysis of individual records for 556,237 adults diagnosed in 59 countries during 2000-2014 (CONCORD-3). Neuro Oncol 2023; 25:580-592. [PMID: 36355361 PMCID: PMC10013649 DOI: 10.1093/neuonc/noac217] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Survival is a key metric of the effectiveness of a health system in managing cancer. We set out to provide a comprehensive examination of worldwide variation and trends in survival from brain tumors in adults, by histology. METHODS We analyzed individual data for adults (15-99 years) diagnosed with a brain tumor (ICD-O-3 topography code C71) during 2000-2014, regardless of tumor behavior. Data underwent a 3-phase quality control as part of CONCORD-3. We estimated net survival for 11 histology groups, using the unbiased nonparametric Pohar Perme estimator. RESULTS The study included 556,237 adults. In 2010-2014, the global range in age-standardized 5-year net survival for the most common sub-types was broad: in the range 20%-38% for diffuse and anaplastic astrocytoma, from 4% to 17% for glioblastoma, and between 32% and 69% for oligodendroglioma. For patients with glioblastoma, the largest gains in survival occurred between 2000-2004 and 2005-2009. These improvements were more noticeable among adults diagnosed aged 40-70 years than among younger adults. CONCLUSIONS To the best of our knowledge, this study provides the largest account to date of global trends in population-based survival for brain tumors by histology in adults. We have highlighted remarkable gains in 5-year survival from glioblastoma since 2005, providing large-scale empirical evidence on the uptake of chemoradiation at population level. Worldwide, survival improvements have been extensive, but some countries still lag behind. Our findings may help clinicians involved in national and international tumor pathway boards to promote initiatives aimed at more extensive implementation of clinical guidelines.
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Affiliation(s)
- Fabio Girardi
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK.,Cancer Division, University College London Hospitals NHS Foundation Trust, London, UK.,Division of Medical Oncology 2, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - Melissa Matz
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK
| | - Charles Stiller
- National Cancer Registration and Analysis Service, Public Health England, London, UK
| | - Hui You
- Cancer Information Analysis Unit, Cancer Institute NSW, St Leonards, New South Wales, Australia
| | - Rafael Marcos Gragera
- Epidemiology Unit and Girona Cancer Registry, Catalan Institute of Oncology, Girona, Spain
| | - Mikhail Y Valkov
- Department of Radiology, Radiotherapy and Oncology, Northern State Medical University, Arkhangelsk, Russia
| | - Jean-Luc Bulliard
- Centre for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland.,Neuchâtel and Jura Tumour Registry, Neuchâtel, Switzerland
| | - Prithwish De
- Surveillance and Cancer Registry, and Research Office, Clinical Institutes and Quality Programs, Ontario Health, Toronto, Ontario, Canada
| | - David Morrison
- Scottish Cancer Registry, Public Health Scotland, Edinburgh, UK
| | - Miriam Wanner
- Cancer Registry Zürich, Zug, Schaffhausen and Schwyz, University Hospital Zürich, Zürich, Switzerland
| | - David K O'Brian
- Alaska Cancer Registry, Alaska Department of Health and Social Services, Anchorage, Alaska, USA
| | - Nathalie Saint-Jacques
- Department of Medicine and Community Health and Epidemiology, Centre for Clinical Research, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Michel P Coleman
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK.,Cancer Division, University College London Hospitals NHS Foundation Trust, London, UK
| | - Claudia Allemani
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK
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7
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Xue M, Turpin W, Haim L, Lee SH, Neustaeter A, Mei D, Xu W, Espin-Garcia O, Madsen KL, Guttman DS, Griffiths AM, Huynh H, Turner D, Panancionne R, Steinhart H, Aumais G, Bitton A, Jacobson K, Mack D, Croitoru K. A198 THE LONG-TERM IMPACT OF ENVIRONMENTAL EXPOSURES ON HOST HEALTH AND THE RISK FACTORS OF CROHN'S DISEASE. J Can Assoc Gastroenterol 2023. [PMCID: PMC9991169 DOI: 10.1093/jcag/gwac036.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Background Several environmental factors are associated with Crohn’s disease (CD) in large case-control studies; however, it is not clear how these factors maybe be influenced by age of exposure and if they are related to alterations in pre-disease biological markers of CD risk. Purpose To investigate the association between environmental factors in different age groups with future risk of CD onset and assess their relation to other pre-disease biomarkers. Method We used an environmental risk assessment questionnaire (ERA) to collect information from healthy first-degree relatives(FDR) of CD enrolled in the CCC-GEM project. ERA was a multi-item questionnaire querying 69 questions under 7 section headings: background, cultural/ethnic, smoking history, medical history, family history, environmental history and pet history. For the environmental and pet sections, current and historical (<1, 2-4, 5-15 years old) data was captured at the time of recruitment. We used Cox proportional hazard models to identify exposures associated with future CD onset. Next, we used regression models to identify the relationship of exposures with biological factors associated with CD risk previously identified by our group i.e.: i) intestinal permeability using urinary fractional excretion of lactulose to mannitol ratio (LMR) with LMR≥0.025 defined as abnormal; ii) subclinical inflammation using fecal calprotectin (FCP) with FCP≥100µg/g; and iii) fecal microbiome composition and diversity using 16S rDNA sequencing. Two-sided p<0.05 (or false discovery rate corrected p<0.05) were considered significant. Result(s) A total of 4289 FDRs were recruited, 47% were male, median recruitment age was 17.0 years[6-35]. After a median follow-up of 5.6-years (IQR=3.42-8.67), 86 FDRs developed CD. Living with a dog between age 5-15 (Hazard Ratio (HR)=0.61; 95% confidence interval (CI)=0.39-0.95), and a large family size (>3) in the first year of life (HR=0.41; 95% CI=0.22-0.89) were protective against CD onset. Conversely, having a bird at time of survey (HR=2.84; CI=1.37-5.90), and having a sibling with CD (HR=2.07; 95% CI=1.18-3.63) were risk factors for CD onset. We found that owning a dog between age of 5-15 (Odd Ratio(OR)=0.77, 95% CI=0.65-0.90) was significantly associated with LMR, nine taxa bacterial and higher chao1 diversity index. Having a bird at time of survey was significantly associated with FCP (OR=2.04, 95% CI=1.33-3.11). There was no association between large family size and having a CD sibling with gut microbiome, FCP or LMR. Conclusion(s) The study identified four environmental factors associated with future development of CD. Among them, exposure to dogs during early life was protective against CD onset and might be explained by its association with normal gut permeability and microbiome. We also identified that having a bird at recruitment increased risk of CD onset which might be mediated by an increase in subclinical inflammation. Submitted on behalf of the CCC-GEM consortium Disclosure of Interest None Declared
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Affiliation(s)
- M Xue
- Lunenfeld-Tanenbaum Research Institute
| | - W Turpin
- Lunenfeld-Tanenbaum Research Institute
| | - L Haim
- Lunenfeld-Tanenbaum Research Institute
| | - S -H Lee
- Lunenfeld-Tanenbaum Research Institute
| | | | - D Mei
- Dalla Lana School of Public Health, University of Toronto, Toronto
| | - W Xu
- Dalla Lana School of Public Health, University of Toronto, Toronto
| | - O Espin-Garcia
- Dalla Lana School of Public Health, University of Toronto, Toronto
| | | | - D S Guttman
- Department of Cell & Systems Biology, University of Toronto
| | - A M Griffiths
- Paediatrics, The Hospital for Sick Children, Toronto, Canada
| | - H Huynh
- University of Alberta, Alberta
| | - D Turner
- The Hebrew University of Jerusalem, Jerusalem, Israel
| | | | | | | | | | - K Jacobson
- University of British Columbia, Vancouver
| | - D Mack
- Children’s Hospital of Eastern Ontario and University of Ottawa, Ottawa, Canada
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8
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Zhang Y, Li Q, Wu H, Wang Y, Wang Y, Rencus-Lazar S, Zhao Y, Wang J, Mei D, Xu H, Gazit E, Tao K. Racemic Amino Acid Assembly Enables Supramolecular β-Sheet Transition with Property Modulations. ACS Nano 2023; 17:2737-2744. [PMID: 36696300 DOI: 10.1021/acsnano.2c11006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Amino acids are the most simplistic bio-building blocks and perform a variety of functions in metabolic activities. Increasing publications report that amino acid-based superstructures present amyloid-like characteristics, arising from their supramolecular β-sheet secondary structures driven by hydrogen-bonding-connected supramolecular β-strands, which are formed by head-to-tail hydrogen bonds between terminal amino and carboxyl groups of the adjacent residues. Therefore, the establishment of the structure-function relationships is critical for exploring the properties and applications of amino acid assemblies. Among the naturally encoded self-assembling amino acids, tyrosine (Y)-based superstructures have been found to show diverse properties and functions including high rigidity, promoting melanin formations, mood regulations, and preventing anxiety, thus showing promising potential as next-generation functional biomaterials for biomedical and bio-machine interface applications. However, the development of Y-based organizations of functional features is severely limited due to the intrinsic difficulty of modulating the energetically stable supramolecular β-sheet structures. Herein, we report that by the racemic assembly of l-Y and d-Y, the supramolecular secondary structures are modulated from the antiparallel β-sheets in the enantiomeric assemblies to the parallel ones in the racemate counterparts, thus leading to higher degrees of freedom, which finally induce distinct organization kinetics and modulation of the physicochemical properties including the optical shifts, elastic softening, and the piezoelectric outputs of the superstructures.
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Affiliation(s)
- Yan Zhang
- Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Qi Li
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing100190, China
| | - Haoran Wu
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou311200, China
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou310030, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou310030, China
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, Hangzhou311200, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou310030, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou310030, China
| | - Yan Wang
- Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Sigal Rencus-Lazar
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, Hangzhou311200, China
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Yurong Zhao
- Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Jiqian Wang
- Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou310030, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou310030, China
| | - Hai Xu
- Department of Biological and Energy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Ehud Gazit
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, Hangzhou311200, China
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel
- Department of Materials Science and Engineering, Iby and Aladar Fleischman, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Kai Tao
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou311200, China
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou310030, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou310030, China
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, Hangzhou311200, China
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9
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Caporalini C, Scagnet M, Giunti L, Cetica V, Mei D, Conti V, Moscardi S, Macconi L, Giordano F, D'Incerti L, Genitori L, Guerrini R, Buccoliero A. Myxoid glioneuronal tumor: Histopathologic, neuroradiologic, and molecular features in a single center series. Neoplasia 2023; 37:100885. [PMID: 36764090 PMCID: PMC9929589 DOI: 10.1016/j.neo.2023.100885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 01/17/2023] [Accepted: 02/01/2023] [Indexed: 02/10/2023]
Abstract
BACKGROUND Myxoid glioneuronal tumor (MGT) is a benign glioneuronal neoplasm recently introduced in the World Health Organization (WHO) classification of the central nervous system (CNS) tumors. MGTs are typically located in the septum pellucidum, foramen of Monro or periventricular white matter of the lateral ventricle. They were previously diagnosed as dysembryoplastic neuroepithelial tumors (DNT), showing histological features almost indistinguishable from classical cortical DNT. Despite that, MGTs have been associated with a specific dinucleotide substitution at codon 385 in the platelet-derived growth factor receptor alpha (PDGFRA) gene, replacing a lysine residue with either leucine or isoleucine (p. LysK385Leu/Iso). This genetic variation has never been described in any other CNS tumor. MATERIALS AND METHODS Thirty-one consecutive tumors, previously diagnosed as DNTs at the Meyer Children's Hospital IRCCS between January 2010 and June 2021 were collected for a comprehensive study of their clinical, imaging, pathological features, and molecular profile. RESULTS In six out of the thirty-one tumors we had previously diagnosed as DNTs, we identified the recurrent dinucleotide mutation in the PDGFRA. All six tumors were typically located within the periventricular white matter of the lateral ventricle and in the septum pellucidum. We then renamed these lesions as MGT, according to the latest WHO CNS classification. In all patients we observed an indolent clinical course, without recurrence. CONCLUSION MGT represent a rare but distinct group of neoplasm with a typical molecular profiling, a characteristic localization, and a relative indolent clinical course.
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Affiliation(s)
- C. Caporalini
- Pathology Unit, Meyer Children's Hospital IRCCS, Viale Pieraccini 24, Florence 50100, Italy,Corresponding author.
| | - M. Scagnet
- Neurosurgery Unit, Meyer Children's Hospital IRCCS, Florence, Italy
| | - L. Giunti
- Neuro-Oncology Unit, Department of Pediatric Oncology, Meyer Children's Hospital IRCCS, Florence, Italy
| | - V. Cetica
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy
| | - D. Mei
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy
| | - V. Conti
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy
| | - S. Moscardi
- Pathology Unit, Meyer Children's Hospital IRCCS, Viale Pieraccini 24, Florence 50100, Italy
| | - L. Macconi
- Radiology Unit, Meyer Children's Hospital IRCCS, Florence, Italy
| | - F. Giordano
- Neurosurgery Unit, Meyer Children's Hospital IRCCS, Florence, Italy
| | - L. D'Incerti
- Radiology Unit, Meyer Children's Hospital IRCCS, Florence, Italy
| | - L. Genitori
- Neurosurgery Unit, Meyer Children's Hospital IRCCS, Florence, Italy
| | - R. Guerrini
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy
| | - A.M. Buccoliero
- Pathology Unit, Meyer Children's Hospital IRCCS, Viale Pieraccini 24, Florence 50100, Italy
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Ye S, Zhang D, Chen B, Xu J, Jia C, Mei D, Yuan Y. Study on microstructure and extinction characteristics of particulate matter in diesel engine fueled with different biodiesels. Environ Sci Pollut Res Int 2023; 30:22458-22470. [PMID: 36289128 PMCID: PMC9607716 DOI: 10.1007/s11356-022-23747-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Biodiesel combustion particulate matter (PM) is different from diesel combustion PM in terms of microscopic morphology, which directly affects the optical properties of PM. To investigate the effect of the microstructure of biodiesel PM on the extinction characteristics, an experiment was performed on a high-pressure common rail diesel engine to collect PM from three kinds of biodiesel (the main raw materials were soybean oil methyl eater (SME), palm oil methyl eater (PME), and waste cooking oil methyl eater (WME), respectively). The particle size distribution, micro morphology, and extinction characteristics of biodiesel PM were analyzed. Results show that combustion biodiesel reduces PM emissions by up to 84.2%. Compared to PM from diesel, biodiesel PM has a smaller particle size and a higher aggregation degree, which results in weaker light absorption capacity. With the iodine number of biodiesel decreasing, the number concentration of biodiesel PM decreases and the fractal dimension increases, which leads to producing a more complex agglomerate and a consequent reduction in extinction coefficient. The average particle sizes of PM from SME, PME, and WME are 5.1%, 6.7%, and 13.9% lower than that of diesel PM. Compared with diesel combustion PM, the peak absorption coefficients of SME, WME, and PME combustion PM decrease by 8.4%, 11.4%, and 13.3%, respectively. The extinction properties of particles decrease with increasing fractal dimension within the wavelength range of visible light.
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Affiliation(s)
- Siqi Ye
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Dengpan Zhang
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China.
| | - Bo Chen
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Jieping Xu
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Changkai Jia
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
- CIMC Offshore Engineering Institute Co., Ltd, Yantai, 264000, People's Republic of China
| | - Deqing Mei
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Yinnan Yuan
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
- College of Energy, Soochow University, Suzhou, 215006, People's Republic of China
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11
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Pan H, Mei D, Xu C, Han S, Wang Y. Bisymmetric coherent acoustic tweezers based on modulation of surface acoustic waves for dynamic and reconfigurable cluster manipulation of particles and cells. Lab Chip 2023; 23:215-228. [PMID: 36420975 DOI: 10.1039/d2lc00812b] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Acoustic tweezers based on surface acoustic waves (SAWs) have raised great interest in the fields of tissue engineering, targeted therapy, and drug delivery. Generally, the complex structure and array layout design of interdigital electrodes would restrict the applications of acoustic tweezers. Here, we present a novel approach by using bisymmetric coherent acoustic tweezers to modulate the shape of acoustic pressure fields with high flexibility and accuracy. Experimental tests were conducted to perform the precise, contactless, and biocompatible cluster manipulation of polystyrene microparticles and yeast cells. Stripe, dot, quadratic lattice, hexagonal lattice, interleaved stripe, oblique stripe, and many other complex arrays were achieved by real-time modulation of amplitudes and phase relations of coherent SAWs to demonstrate the capability of the device for the cluster manipulation of particles and cells. Furthermore, rapid switching among various arrays, shape regulation, geometric parameter modulation of array units, and directional translation of microparticles and cells were implemented. This study demonstrated a favorable technique for flexible and versatile manipulation and patterning of cells and biomolecules, and it has the advantages of high manipulation accuracy and adjustability, thus it is expected to be utilized in the fields of targeted cellular assembly, biological 3D printing, and targeted release of drugs.
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Affiliation(s)
- Hemin Pan
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Chengyao Xu
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Shuo Han
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China.
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12
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Pan H, Mei D, Xu C, Weng W, Han S, Wang Y. Multifunctional Acoustofluidic Centrifuge Device Using Tri-Symmetrical Design for Particle Enrichment and Separation and Multiphase Microflow Mixing. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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13
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Mei D, Fang Y, Adu-Mensah D, Cai W, Yuan Y. Spray characteristics of fuel with cerium oxide nanoparticles. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Wang S, Zhang Z, Chen Z, Mei D, Wang Y. Development of Pressure Sensor Based Wearable Pulse Detection Device for Radial Pulse Monitoring. Micromachines (Basel) 2022; 13:mi13101699. [PMID: 36296052 PMCID: PMC9609944 DOI: 10.3390/mi13101699] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/27/2022] [Accepted: 10/06/2022] [Indexed: 05/31/2023]
Abstract
Wearable pulse detection devices can be used for daily human healthcare monitoring; however, the relatively poor flexibility and low sensitivity of the pulse detection devices are hindering the scrutiny of pulse information during pulse diagnosis of different pulse positions. This paper developed a novel and wearable pulse detection device based on three flexible pressure sensors using synthetic graphene and silver composites as the pressure sensing material. The structural design of the pulse detection device is firstly presented; the core component of pressure sensors is using the sawtooth protrusions to convert pressure induced by radial pulse vibrations into localized deformation of graphene composites. The fabricated pulse detection device is characterized by high pressure sensing performance, including relatively high sensitivity (8.65% kPa-1), broad sensing range (12 kPa), and good dynamic response with a response time of about 100 ms. Then, the pulse detection device is worn on a human wrist to detect the pulses from three pulse positions, namely, 'Cun', 'Guan', and 'Chi', and the results demonstrated the capability of using our device to detect pulse signals. The physical conditions of the subject, such as arterial stiffness index, can be further analyzed through the characteristics of the acquired pulse signals, demonstrating the potential application of using wearable pulse detection devices for human health monitoring.
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Affiliation(s)
- Shihang Wang
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhinan Zhang
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhijian Chen
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Deqing Mei
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yancheng Wang
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Donghai Laboratory, Zhoushan 316021, China
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15
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Ge Y, Zhou J, Zhang B, Mei D, Xu YC, Ma XJ. [Focusing on patient safety and quality of care, exploring long-term antimicrobial stewardship]. Zhonghua Nei Ke Za Zhi 2022; 61:1091-1094. [PMID: 36207964 DOI: 10.3760/cma.j.cn112138-20220509-00351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- Y Ge
- Department of Infectious Disease, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - J Zhou
- Department of Medical Record, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - B Zhang
- Pharmacy Department, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - D Mei
- Pharmacy Department, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y C Xu
- Laboratory Department, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X J Ma
- Department of Infectious Disease, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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16
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Zhang J, Wang Y, Rodriguez BJ, Yang R, Yu B, Mei D, Li J, Tao K, Gazit E. Microfabrication of peptide self-assemblies: inspired by nature towards applications. Chem Soc Rev 2022; 51:6936-6947. [PMID: 35861374 DOI: 10.1039/d2cs00122e] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Peptide self-assemblies show intriguing and tunable physicochemical properties, and thus have been attracting increasing interest over the last two decades. However, the micro/nano-scale dimensions of the self-assemblies severely restrict their extensive applications. Inspired by nature, to genuinely realize the practical utilization of the bio-organic super-architectures, it is beneficial to further organize the peptide self-assemblies to integrate the properties of the individual supermolecules and fabricate higher-level organizations for smart functional devices. Therefore, cumulative studies have been reported on peptide microfabrication giving rise to diverse properties. This review summarizes the recent development of the microfabrication of peptide self-assemblies, discussing each methodology along with the diverse properties and practical applications of the engineered peptide large-scale, highly-ordered organizations. Finally, the current limitations of the state-of-the-art microfabrication strategies are critically assessed and alternative solutions are suggested.
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Affiliation(s)
- Jiahao Zhang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China. .,Future Science Research Institute, Hangzhou Global Scientific and Technological Innovation Centre, Hangzhou 311200, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China. .,Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Brian J Rodriguez
- School of Physics and Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - Rusen Yang
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710126, China
| | - Bin Yu
- Future Science Research Institute, Hangzhou Global Scientific and Technological Innovation Centre, Hangzhou 311200, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China. .,Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kai Tao
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China. .,Future Science Research Institute, Hangzhou Global Scientific and Technological Innovation Centre, Hangzhou 311200, China.,Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Ehud Gazit
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel. .,School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel
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Monari D, Mei D, Mantovani F, Guiducci V, Navazio A. P107 MULTIMODALITY IMAGING IN ASCENDING AORTA PSEUDO–ANEURYSM COMPLICATED BY MOBILE TROMBUS SYMPTOMATIC FOR RECURRENT ISCHEMIC STROKE. Eur Heart J Suppl 2022. [DOI: 10.1093/eurheartj/suac012.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
A 80–year–old male patient was admitted to hospital with a clinical picture of Broca‘s aphasia. The patient had arterial hypertension, diabetes, chronic kidney disease and peripheral vasculopathy. In remote cardiological history he presents long standing persistent atrial fibrillation on OAC and he had a biological aortic valve prosthesis (Medtronic 23). Overall time in the therapeutic range (INR 2.0–2.5) was adequate considering the presence of atrial fibrillation. A CT scan was performed on suspicion of stroke, showing a recent ischemic lesion in the left middle temporal region complicated by same–site subarachnoid blood suffusion. During the hospital stay there was a recurrence of the aforementioned symptoms: at the CT check a new acute ischemic same–site lesion and a new ischaemic lesion at the left temporal site was highlighted. In the suspicion of a cardio–embolic origin of cerebro–vascular events, it was decided to carry out imaging for the study of the aorta and heart cavities to exclude embolic sources. Given the patient‘s comorbidities and the reported allergies (contrast medium with angioedema–like reaction at a previous CT) it was decided to perform transesophageal echocardiography (TEE) first. TEE documented the presence of a saccular aneurysm of probable pseudo–aneurysmatic nature, which extends from 20 mm from the valvular plane, characterized by pedunculated, mobile thrombotic apposition, adhered to the internal collar, projecting into the psueudo–aneurysmatic cavity (image 1). This finding was confirmed and better characterized with the help of the real time three–dimensional echocardiographic method (image 2). To confirm and better characterize the extension of the pseudo–aneurysm and plan any strategy, a CT scan with contrast medium was required. Performing contrast–enhanced CT, after careful preparation with premedication with antihistamine and cortisone, confirmed the finding of pseudo–aneurysm of the ascending aorta, but the pedunculated thrombotic apposition was less clearly evidenced compared with TEE (giving the superior temporal resolution of TEE) (image 3). The case was therefore assessed in Heart Team and the patient was scheduled for surgically exclusion of the pseudo–aneurysm.
Conclusion
In our case a multimodality imaging approach was used to diagnose and confirm the presence of ascending aorta pseudo–aneurysm complicated by pedunculated thrombotic apposition inside it, symptomatic for recurrent ischaemic stroke.
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Affiliation(s)
- D Monari
- CARDIOLOGIA, AZIENDA USL, IRCCS DI REGGIO EMILIA E UNIVERSITÀ DEGLI STUDI DI MODENA E REGGIO EMILIA, REGGIO EMILIA; CARDIOLOGIA, AZIANDA USL, IRCCS DI REGGIO EMILIA, REGGIO EMILIA; AZIENDA USL, IRCCS, REGGIO EMILIA
| | - D Mei
- CARDIOLOGIA, AZIENDA USL, IRCCS DI REGGIO EMILIA E UNIVERSITÀ DEGLI STUDI DI MODENA E REGGIO EMILIA, REGGIO EMILIA; CARDIOLOGIA, AZIANDA USL, IRCCS DI REGGIO EMILIA, REGGIO EMILIA; AZIENDA USL, IRCCS, REGGIO EMILIA
| | - F Mantovani
- CARDIOLOGIA, AZIENDA USL, IRCCS DI REGGIO EMILIA E UNIVERSITÀ DEGLI STUDI DI MODENA E REGGIO EMILIA, REGGIO EMILIA; CARDIOLOGIA, AZIANDA USL, IRCCS DI REGGIO EMILIA, REGGIO EMILIA; AZIENDA USL, IRCCS, REGGIO EMILIA
| | - V Guiducci
- CARDIOLOGIA, AZIENDA USL, IRCCS DI REGGIO EMILIA E UNIVERSITÀ DEGLI STUDI DI MODENA E REGGIO EMILIA, REGGIO EMILIA; CARDIOLOGIA, AZIANDA USL, IRCCS DI REGGIO EMILIA, REGGIO EMILIA; AZIENDA USL, IRCCS, REGGIO EMILIA
| | - A Navazio
- CARDIOLOGIA, AZIENDA USL, IRCCS DI REGGIO EMILIA E UNIVERSITÀ DEGLI STUDI DI MODENA E REGGIO EMILIA, REGGIO EMILIA; CARDIOLOGIA, AZIANDA USL, IRCCS DI REGGIO EMILIA, REGGIO EMILIA; AZIENDA USL, IRCCS, REGGIO EMILIA
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18
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Wang Y, Cui H, Esworthy T, Mei D, Wang Y, Zhang LG. Emerging 4D Printing Strategies for Next-Generation Tissue Regeneration and Medical Devices. Adv Mater 2022; 34:e2109198. [PMID: 34951494 DOI: 10.1002/adma.202109198] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/17/2021] [Indexed: 06/14/2023]
Abstract
The rapid development of 3D printing has led to considerable progress in the field of biomedical engineering. Notably, 4D printing provides a potential strategy to achieve a time-dependent physical change within tissue scaffolds or replicate the dynamic biological behaviors of native tissues for smart tissue regeneration and the fabrication of medical devices. The fabricated stimulus-responsive structures can offer dynamic, reprogrammable deformation or actuation to mimic complex physical, biochemical, and mechanical processes of native tissues. Although there is notable progress made in the development of the 4D printing approach for various biomedical applications, its more broad-scale adoption for clinical use and tissue engineering purposes is complicated by a notable limitation of printable smart materials and the simplistic nature of achievable responses possible with current sources of stimulation. In this review, the recent progress made in the field of 4D printing by discussing the various printing mechanisms that are achieved with great emphasis on smart ink mechanisms of 4D actuation, construct structural design, and printing technologies, is highlighted. Recent 4D printing studies which focus on the applications of tissue/organ regeneration and medical devices are then summarized. Finally, the current challenges and future perspectives of 4D printing are also discussed.
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Affiliation(s)
- Yue Wang
- State Key Laboratory of Fluid Power and Mechatronics Systems, Zhejiang University, Hangzhou, 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Haitao Cui
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, 20052, USA
| | - Timothy Esworthy
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, 20052, USA
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronics Systems, Zhejiang University, Hangzhou, 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronics Systems, Zhejiang University, Hangzhou, 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, 20052, USA
- Department of Electrical and Computer Engineering, The George Washington University, Washington, DC, 20052, USA
- Department of Biomedical Engineering, The George Washington University, Washington, DC, 20052, USA
- Department of Medicine, The George Washington University, Washington, DC, 20052, USA
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Wang Y, Pan H, Mei D, Xu C, Weng W. Programmable motion control and trajectory manipulation of microparticles through tri-directional symmetrical acoustic tweezers. Lab Chip 2022; 22:1149-1161. [PMID: 35134105 DOI: 10.1039/d2lc00046f] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Acoustic tweezers based on travelling surface acoustic waves (TSAWs) have the potential for contactless trajectory manipulation and motion-parameter regulation of microparticles in biological and microfluidic applications. Here, we present a novel design of a tri-directional symmetrical acoustic tweezers device that enables the precise manipulation of linear, clockwise, and anticlockwise trajectories of microparticles. By switching the excitation combinations of interdigital electrodes (IDTs), various shape patterns of acoustic pressure fields can be formed to capture and steer microparticles accurately according to pre-defined trajectories. Numerical simulations and experimental tests were conducted in this study. By adjusting the input electric signals and the fluid's viscosity, the device is able to manipulate microparticles of various forms as well as brine shrimp egg cells with the accurate modulation of motion parameters. The results show that the proposed programmable design possesses low-cost, compact, non-contact, and high biocompatibility benefits, with the capacity to accurately manage microparticles in a range of motion trajectories, independent of their physical and/or chemical characteristics. Thus, our design has strong potential applications in chemical composition analysis, drug delivery, and cell assembly.
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Affiliation(s)
- Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Hemin Pan
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Chengyao Xu
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Wanyu Weng
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
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20
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Cursio I, Ronzano N, Asunis M, Dettori M, Cossu S, Murru S, Cau M, Incani F, Mei D, Bianchini C, Scioni M, Pruna D. A peculiar family with recurrent self-limited epileptic syndrome and associated developmental disorders in six girls. Epilepsy Behav Rep 2022; 19:100546. [PMID: 35637976 PMCID: PMC9142554 DOI: 10.1016/j.ebr.2022.100546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/14/2022] [Accepted: 04/16/2022] [Indexed: 11/28/2022] Open
Abstract
Self-Limited Epilepsies may evolve to Developmental and/or Epileptic Encephalopathy. Family cases may present with recurrent phenotype and complex genetic background. Genetic testing could not provide useful elements for early aetiological diagnosis. This electroclinical phenotype had remarkable impact on development. It’s important an early identification of genetic risk factors of family cases.
We describe a complex family with two couples (two sisters who married two brothers) with consistent social and neuropsychiatric problems, originally from Sardinia. Each couple had three daughters, which shared electroclinical epileptic syndrome and developmental disorders. All patients suffered from mild to moderate intellectual disability, speech difficulties and behavioural disorders. Four out of six patients had epilepsy onset between 3 and 4 years of age. The epileptic history almost reflected the typical clinical course of a self-Limited Focal Epilepsy of Childhood. However, our patients don’t have the complete features characteristic of one of the four specific self-Limited Focal Epilepsies of Childhood; a progressive evolution into a Developmental and/or Epileptic Encephalopathy with spike-wave activation in sleep was observed in the two older sister of the first family, which developed more severe developmental disorder too. In the other epileptic patients, improvement of EEG pattern was not coincident with an improvement of the developmental disorders. Brain MRI, performed in three patients, showed normal findings. Genetic analysis carried out so far (SNP-array, study of Runs of homozygosity, FMR1 triplet-repeat primer-PCR assay, Next Generation Sequencing based gene panel for epilepsy and neurodevelopmental disorders and Exome Sequencing), did not provide useful elements for an aetiological diagnosis.
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21
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Wang W, Jiang Y, Wang D, Mei D, Xu H, Zhao B. Clinical efficacy of autogenous dentin grafts with guided bone regeneration for horizontal ridge augmentation: a prospective observational study. Int J Oral Maxillofac Surg 2021; 51:837-843. [PMID: 34924269 DOI: 10.1016/j.ijom.2021.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/27/2021] [Accepted: 06/28/2021] [Indexed: 10/19/2022]
Abstract
The aim of this study was to evaluate the efficacy of autogenous dentin grafts with guided bone regeneration (GBR) for horizontal ridge augmentation. Nineteen patients with dentition and bone defects in whom tooth/teeth extraction was indicated were recruited. Autogenous teeth were prepared, fixed on the buccal sides of the defects, and covered with bone powder and resorbable membranes before implantation. The horizontal bone mass at 0 mm (W1), 3 mm (W2), and 6 mm (W3) from the alveolar crest was recorded using cone beam computed tomography, before, immediately after, and 6 months after dentin grafting. All adverse effects were recorded. The implant stability quotient (ISQ) was measured 6 months after implantation. Twenty-eight implants were placed 6 months after dentin grafting. At this time point, the bone mass was 4.72 ± 0.72 mm (W1), 7.35 ± 1.57 mm (W2), and 8.96 ± 2.38 mm (W3), which was significantly different from that before the surgery (P < 0.05). The bone gain was 2.50 ± 0.72 mm (W1), 4.10 ± 1.42 mm (W2), and 4.56 ± 2.09 mm (W3). No soft tissue dehiscence or infection was observed. Overall, 26.3% of the patients experienced severe pain after dentin grafting. The ISQ was 78.31 ± 6.64 at 6 months after implantation. Autogenous tooth roots with GBR might be effective for horizontal ridge augmentation. This technique could be an alternative to augmentation using autogenous bone grafts.
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Affiliation(s)
- W Wang
- Department of Oral Implantology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China; School of Stomatology of Qingdao University, Qingdao, Shandong, China
| | - Y Jiang
- Department of Oral Implantology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - D Wang
- Department of Oral Implantology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - D Mei
- Department of Oral Implantology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - H Xu
- Department of Oral Implantology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - B Zhao
- Department of Oral Implantology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China; State Key Laboratory of Military Stomatology, Shanxi, China.
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22
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Li Y, Xiong C, Huang H, Peng X, Mei D, Li M, Liu G, Wu M, Zhao T, Huang B. 2D Ti 3 C 2 T x MXenes: Visible Black but Infrared White Materials. Adv Mater 2021; 33:e2103054. [PMID: 34463370 DOI: 10.1002/adma.202103054] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/15/2021] [Indexed: 06/13/2023]
Abstract
Black inorganic materials with low infrared absorption/emission (or IR white) are rare in nature but highly desired in numerous areas, such as solar-thermal energy harvesting, multispectral camouflage, thermal insulation, and anti-counterfeiting. Due to the lack of spectral selectivity in intrinsic materials, such counter-intuitive properties are generally realized by constructing complicated subwavelength metamaterials with costly nanofabrication techniques. Here, the intrinsically low mid-IR emissivity (down to 10%) of the 2D Ti3 C2 Tx MXene is reported. Associated with a high solar absorptance (up to 90%), it embraces the best spectral selectivity among the reported intrinsic black solar-absorbing materials. Its appealing potential in several of the aforementioned areas is experimentally demonstrated. First-principles calculations reveal that the IR emissivity of MXene relies on both the nanoflake orientations and terminal groups, indicating great tunability. The calculations also suggest more potential low-emissivity MXenes including Ti2 CTx , Nb2 CTx , and V2 CTx . This work opens the avenue to further exploration of a family of intrinsically low-emissivity materials with over 70 members.
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Affiliation(s)
- Yang Li
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Cheng Xiong
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - He Huang
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Xudong Peng
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Deqing Mei
- School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Meng Li
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Gongze Liu
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Maochun Wu
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Tianshou Zhao
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Baoling Huang
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
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23
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Zhu Z, Zhang B, Tang Y, Mei D, Li DK. [Peking Union Medical College Hospital and Its Training of Pharmaceutical Staff in the Republican Period]. Zhonghua Yi Shi Za Zhi 2021; 51:282-288. [PMID: 34794267 DOI: 10.3760/cma.j.cn112155-20200702-00101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Several training programs for the pharmacy staff in the Pharmacy Department of Beijing Union Medical College Hospital were implemented over 1910's to 1942, such as apprenticeships, prior courses on pharmaceutical sciences,vocational training, study overseas, and developing the Beiping Pharmacy Evening School in collaboration with the North China Pharmaceutical Society around the 1930's. These programs explored training models for the hospital, developed practical talent with competence ensuring the needs and requirements within the hospital, established practical education on pharmacy in Beiping and therefore contributed to promoting future pharmaceutical training systems in China.
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Affiliation(s)
- Z Zhu
- Department of Pharmacy, Peking Union Medical College Hospital,Chinese Academy Institute of Medical Sciences-Peking Union Medical College, Beijing 100730, China
| | - B Zhang
- Department of Pharmacy, Peking Union Medical College Hospital,Chinese Academy Institute of Medical Sciences-Peking Union Medical College, Beijing 100730, China
| | - Y Tang
- Department of Pharmacy, Peking Union Medical College Hospital,Chinese Academy Institute of Medical Sciences-Peking Union Medical College, Beijing 100730, China
| | - D Mei
- Department of Pharmacy, Peking Union Medical College Hospital,Chinese Academy Institute of Medical Sciences-Peking Union Medical College, Beijing 100730, China
| | - D K Li
- Department of Pharmacy, Peking Union Medical College Hospital,Chinese Academy Institute of Medical Sciences-Peking Union Medical College, Beijing 100730, China
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Mei D, Fang Y, Zhang Z, Guo D, Chen Z, Sun C. Analysis of surface tension for nano-fuels containing disparate types of suspended nanoparticles. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Wang Y, Cui H, Wang Y, Xu C, Esworthy TJ, Hann SY, Boehm M, Shen YL, Mei D, Zhang LG. 4D Printed Cardiac Construct with Aligned Myofibers and Adjustable Curvature for Myocardial Regeneration. ACS Appl Mater Interfaces 2021; 13:12746-12758. [PMID: 33405502 PMCID: PMC9554838 DOI: 10.1021/acsami.0c17610] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
As an innovative additive manufacturing process, 4D printing can be utilized to generate predesigned, self-assembly structures which can actuate time-dependent, and dynamic shape-changes. Compared to other manufacturing techniques used for tissue engineering purposes, 4D printing has the advantage of being able to fabricate reprogrammable dynamic tissue constructs that can promote uniform cellular growth and distribution. For this study, a digital light processing (DLP)-based printing technique was developed to fabricate 4D near-infrared (NIR) light-sensitive cardiac constructs with highly aligned microstructure and adjustable curvature. As the curvature of the heart is varied across its surface, the 4D cardiac constructs can change their shape on-demand to mimic and recreate the curved topology of myocardial tissue for seamless integration. To mimic the aligned structure of the human myocardium and to achieve the 4D shape change, a NIR light-sensitive 4D ink material, consisting of a shape memory polymer and graphene, was created to fabricate microgroove arrays with different widths. The results of our study illustrate that our innovative NIR-responsive 4D constructs exhibit the capacity to actuate a dynamic and remotely controllable spatiotemporal transformation. Furthermore, the optimal microgroove width was discovered via culturing human induced pluripotent stem cell-derived cardiomyocytes and mesenchymal stem cells onto the constructs' surface and analyzing both their cellular morphology and alignment. The cell proliferation profiles and differentiation of tricultured human-induced pluripotent stem cell-derived cardiomyocytes, mesenchymal stem cells, and endothelial cells, on the printed constructs, were also studied using a Cell Counting Kit-8 and immunostaining. Our results demonstrate a uniform distribution of aligned cells and excellent myocardial maturation on our 4D curved cardiac constructs. This study not only provides an efficient method for manufacturing curved tissue architectures with uniform cell distributions, but also extends the potential applications of 4D printing for tissue regeneration.
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Affiliation(s)
| | | | | | | | | | | | - Manfred Boehm
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
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Li Y, Lin C, Wu Z, Chen Z, Chi C, Cao F, Mei D, Yan H, Tso CY, Chao CYH, Huang B. Solution-Processed All-Ceramic Plasmonic Metamaterials for Efficient Solar-Thermal Conversion over 100-727 °C. Adv Mater 2021; 33:e2005074. [PMID: 33241608 DOI: 10.1002/adma.202005074] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 10/17/2020] [Indexed: 06/11/2023]
Abstract
Low-cost and large-area solar-thermal absorbers with superior spectral selectivity and excellent thermal stability are vital for efficient and large-scale solar-thermal conversion applications, such as space heating, desalination, ice mitigation, photothermal catalysis, and concentrating solar power. Few state-of-the-art selective absorbers are qualified for both low- (<200 °C) and high-temperature (>600 °C) applications due to insufficient spectral selectivity or thermal stability over a wide temperature range. Here, a high-performance plasmonic metamaterial selective absorber is developed by facile solution-based processes via assembling an ultrathin (≈120 nm) titanium nitride (TiN) nanoparticle film on a TiN mirror. Enabled by the synergetic in-plane plasmon and out-of-plane Fabry-Pérot resonances, the all-ceramic plasmonic metamaterial simultaneously achieves high, full-spectrum solar absorption (95%), low mid-IR emission (3% at 100 °C), and excellent stability over a temperature range of 100-727 °C, even outperforming most vacuum-deposited absorbers at their specific operating temperatures. The competitive performance of the solution-processed absorber is accompanied by a significant cost reduction compared with vacuum-deposited absorbers. All these merits render it a cost-effective, universal solution to offering high efficiency (89-93%) for both low- and high-temperature solar-thermal applications.
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Affiliation(s)
- Yang Li
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Chongjia Lin
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Zuoxu Wu
- School of Science, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Zhongying Chen
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Cheng Chi
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Feng Cao
- School of Science, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Deqing Mei
- School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - He Yan
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Chi Yan Tso
- School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
| | - Christopher Y H Chao
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong, 999077, China
| | - Baoling Huang
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
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Tao K, Xue B, Han S, Aizen R, Shimon LJW, Xu Z, Cao Y, Mei D, Wang W, Gazit E. Bioinspired Suprahelical Frameworks as Scaffolds for Artificial Photosynthesis. ACS Appl Mater Interfaces 2020; 12:45192-45201. [PMID: 32924412 PMCID: PMC7549093 DOI: 10.1021/acsami.0c13295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
Framework materials have shown promising potential in various biological applications. However, the state-of-the-art components show low biocompatibility or mechanical instability, or cannot integrate both optics and electronics, thus severely limiting their extensive applications in biological systems. Herein, we demonstrate that amide-based bioorganic building blocks, including dipeptides and dipeptide nucleic acids, can self-assemble into hydrogen-bonded suprahelix architectures of controllable handedness, which then form suprahelical frameworks with diverse cavities. Especially, the cavities can be tuned to be hydrophilic or hydrophobic, and the shortest diagonal distance can be modulated from 0.5 to 1.8 nm, with the volume proportion in the unit cell changing from 5 to 60%. Furthermore, the hydrogen bonding networks result in high mechanical rigidity and semiconductively optoelectronic properties, which allow the utilization of the suprahelical frameworks as supramolecular scaffolds for artificial photosynthesis. Our findings reveal amide-based suprahelix architectures acting as bioinspired supramolecular frameworks, thus extending the constituents portfolio and increasing the feasibility of using framework materials for biological applications.
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Affiliation(s)
- Kai Tao
- State
Key Laboratory of Fluid Power and Mechatronic Systems & Key Laboratory
of Advanced Manufacturing Engineering of Zhejiang Province, School
of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Bin Xue
- National
Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, Jiangsu, China
| | - Shuyi Han
- China
Petroleum Engineering & Construction Corp. Southwest Company, No. 6th Shenghua Road, High-Tech
Zone, Chengdu 610094, Sichuan, China
| | - Ruth Aizen
- School
of Molecular Cell Biology and Biotechnology, George S. Wise Faculty
of Life Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Linda J. W. Shimon
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot 7610001, Israel
| | - Zhengyu Xu
- National
Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, Jiangsu, China
| | - Yi Cao
- National
Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, Jiangsu, China
| | - Deqing Mei
- State
Key Laboratory of Fluid Power and Mechatronic Systems & Key Laboratory
of Advanced Manufacturing Engineering of Zhejiang Province, School
of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Wei Wang
- National
Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, Jiangsu, China
| | - Ehud Gazit
- School
of Molecular Cell Biology and Biotechnology, George S. Wise Faculty
of Life Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel
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Zhu L, Wang Y, Mei D, Jiang C. Development of Fully Flexible Tactile Pressure Sensor with Bilayer Interlaced Bumps for Robotic Grasping Applications. Micromachines (Basel) 2020; 11:E770. [PMID: 32806604 PMCID: PMC7463877 DOI: 10.3390/mi11080770] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/10/2020] [Accepted: 08/11/2020] [Indexed: 01/06/2023]
Abstract
Flexible tactile sensors have been utilized in intelligent robotics for human-machine interaction and healthcare monitoring. The relatively low flexibility, unbalanced sensitivity and sensing range of the tactile sensors are hindering the accurate tactile information perception during robotic hand grasping of different objects. This paper developed a fully flexible tactile pressure sensor, using the flexible graphene and silver composites as the sensing element and stretchable electrodes, respectively. As for the structural design of the tactile sensor, the proposed bilayer interlaced bumps can be used to convert external pressure into the stretching of graphene composites. The fabricated tactile sensor exhibits a high sensing performance, including relatively high sensitivity (up to 3.40% kPa-1), wide sensing range (200 kPa), good dynamic response, and considerable repeatability. Then, the tactile sensor has been integrated with the robotic hand finger, and the grasping results have indicated the capability of using the tactile sensor to detect the distributed pressure during grasping applications. The grasping motions, properties of the objects can be further analyzed through the acquired tactile information in time and spatial domains, demonstrating the potential applications of the tactile sensor in intelligent robotics and human-machine interfaces.
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Affiliation(s)
- Lingfeng Zhu
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; (L.Z.)
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; (L.Z.)
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; (L.Z.)
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chengpeng Jiang
- Research Center for Smart Sensing, Zhejiang Lab, Hangzhou 310000, China;
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Zhu L, Wang Y, Mei D, Ding W, Jiang C, Lu Y. Fully Elastomeric Fingerprint-Shaped Electronic Skin Based on Tunable Patterned Graphene/Silver Nanocomposites. ACS Appl Mater Interfaces 2020; 12:31725-31737. [PMID: 32569461 DOI: 10.1021/acsami.0c09653] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Multifunctional electronic skins (e-skins), which mimic the somatosensory system of human skin, have been widely employed in wearable devices for intelligent robotics, prosthetics, and human health monitoring. Relatively low sensitivity and severe mutual interferences of multiple stimuli detection have limited the applications of the existing e-skins. To address these challenges, inspired by the physical texture of the natural fingerprint, a novel fully elastomeric e-skin is developed herein for highly sensitive pressure and temperature sensing. A region-partition strategy is utilized to construct the multifunctional fingerprint-shaped sensing elements, where strain isolation structure of indurated film patterns are further embedded to enhance the sensitivity and effectively reduce mutual interferences between the differentiated units. The fully elastomeric graphene/silver/silicone rubber nanocomposites are synthesized with tunable properties including conductivity and sensitivity to satisfy the requirements of highly sensitive pressure and temperature sensing as well as stretchable electrodes. Remarkable progress in sensitivities for both pressure and temperature, up to 5.53 kPa-1 in a wide range of 0.5-120 kPa and 0.42% °C-1 in 25-60 °C, respectively, are achieved with the inappreciable mutual interferences. Further studies demonstrate the great potential of the proposed e-skin in the next-generation of wearable electronics for human-machine interfaces.
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Affiliation(s)
- Lingfeng Zhu
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Wen Ding
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chengpeng Jiang
- Research Center for Smart Sensing, Zhejiang Lab, Hangzhou 310000, China
| | - Yingtong Lu
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
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30
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Wang Y, Wang Y, Mei D. Scalable Printing of Bionic Multiscale Channel Networks Through Digital Light Processing-Based Three-Dimensional Printing Process. 3D Print Addit Manuf 2020; 7:115-125. [PMID: 36655197 PMCID: PMC9586228 DOI: 10.1089/3dp.2020.0025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Digital light processing (DLP)-based printing process has been used to print microfeature-sized constructs and architectures for biomedical applications; the key challenge is to achieve both large printing size and high accuracy at the same time. Here we reported a scalable DLP-based three-dimensional (3D) printing system with scalable resolution and building size, which was used for printing of multiscale hydrogel fractal bionic channels. Scalable printing was achieved by moving the convex lens of the printing system, and thus, each single micromirror of the digital micromirror device chip corresponded to the single-pixel size scaling from 6 to12 μm. Using this system, we were able to use poly (ethylene glycol) diacrylate to fabricate a variety of multiscale architectures, such as regular fractal Y-shaped channels, and more irregular and intricate geometries, such as biomimetic capillary vascular networks. Blue and red food dye solutions were able to freely fill all these channels in the scaffolds, from the trunk (>1500 μm in width) to small branch (∼30 μm in width) by capillarity. Cell experiments were carried out to certify the biocompatibility of printed multiscale biomimetic channel networks. This work reveals significant progress in printing multiscale constructs with both large printing size and high precision in scalable DLP-based 3D printing.
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Affiliation(s)
- Yue Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
- Department of Aerospace and Mechanical Engineering, The George Washington University, Washington, District of Columbia, USA
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
- Department of Aerospace and Mechanical Engineering, The George Washington University, Washington, District of Columbia, USA
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31
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Wang Y, Wang Y, Mei D, Yu Z, Xue D. Standing surface acoustic wave-assisted fabrication of patterned microstructures for enhancing cell migration. Biodes Manuf 2020. [DOI: 10.1007/s42242-020-00071-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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32
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Bu B, Yi K, Wang H, Yang M, Wu M, Ping L, Xie Y, Qiu J, Zhao L, Mei D, Wang X, Song Y, Zhu J, Liu W. Hepatitis B virus infection status is not associated with poor prognosis in classical Hodgkin lymphoma patients. Neoplasma 2019; 67:203-208. [PMID: 31829022 DOI: 10.4149/neo_2019_190211n113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 07/09/2019] [Indexed: 11/08/2022]
Abstract
Few studies focused on the relationship between hepatitis B virus (HBV) infection and classical Hodgkin lymphoma (cHL). This study was to evaluate the impact of HBV infection on the treatment outcome and survival of cHL patients. Clinical data of 352 cHL patients treated with ABVD regimen (doxorubicin, bleomycin, vincristine and dacarbazine) between January 2002 and January 2018 were retrospectively collected. According to HBV infection status, the patients were divided into three groups: with HBV infection [hepatitis B surface antigen (HBsAg)-positive], with past HBV infection [HBsAg-negative but anti-hepatitis B core antigen (anti-HBc)-positive], and without HBV infection (HBsAg-negative and anti-HBc-negative). The incidence of HBV infection and past HBV infection in cHL patients were 7.4% (26/352) and 16.5% (58/352), respectively. The median age of patients without HBV infection was lower than those in other two groups (p<0.001). The complete remission rates after first-line therapy were different among 3 groups (65.4% for the group with HBV infection, 87.9% for the group with past HBV infection, and 76.1% for the group without HBV infection, respectively, p=0.049). After a median follow-up of 34.6 months, the 3-year progression-free survival rates for the three groups were 69%, 74% and 80%, respectively (p=0.566) and the 3-year overall survival rates were 72%, 91% and 87%, respectively (p=0.096). No HBV reactivation was observed during chemotherapy among 3 groups, but 1 patient in the group with HBV infection experienced delayed HBV reactivation when prophylactic entecavir was discontinued 12 months after the last cycle of chemotherapy. HBV infection status did not affect the clinical outcome and prognosis of cHL patients, especially in the era of prophylactic antiviral therapy.
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Affiliation(s)
- B Bu
- Department of Medical Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong University, Jinan, China
| | - K Yi
- Department of Lymphoma and Hematology, Jiangxi Cancer Hospital, Nanchang University, Nanchang, China
| | - H Wang
- Department of Pediatric Hematology and Oncology, Shandong Provincial Qianfoshan Hospital, First Hospital Affiliated with Shandong First Medical University, Shandong First Medical University, Jinan, China
| | - M Yang
- Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Peking University, Beijing, China
| | - M Wu
- Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Peking University, Beijing, China
| | - L Ping
- Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Peking University, Beijing, China
| | - Y Xie
- Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Peking University, Beijing, China
| | - J Qiu
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, China
| | - L Zhao
- Department of Lymphoma, Peking University International Hospital, Peking University, Beijing, China
| | - D Mei
- Department of Lymphoma, Peking University International Hospital, Peking University, Beijing, China
| | - X Wang
- Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Peking University, Beijing, China
| | - Y Song
- Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Peking University, Beijing, China
| | - J Zhu
- Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Peking University, Beijing, China
| | - W Liu
- Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Peking University, Beijing, China
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33
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Giunti L, Cetica V, De Gregorio V, Mei D, Barba C, Buccoliero A, Genitori L, Guerrini R, Giglio S, Sardi I, Guidi M, Censullo M. P04.08 The role of SCN1A in glioblastomas and mixed neuronal glial tumors of pediatric age. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
BACKGROUND
Low and high grade gliomas, are the most common pediatric central nervous system (CNS) tumors and they show an extremely broad range of clinical behavior. Pediatric glioma is distinct from its adult counterpart with different genetic/epigenetic profile and biological features. Recently, several studies have shown the involvement of voltage-gated Na+ channels (VGSC) in different types of cancer, including gliomas. VGSC are multimeric transmembrane complexes, responsible for membrane depolarization in excitable cells playing an important role also in cell proliferation, migration, apoptosis and differentiation. VGSC are therapeutic targets in cardiovascular and neurological disorders and, in cancers, they could be a novel target for the development of promising anticancer therapy
MATERIAL AND METHODS
Firstly, we explored the genetic background of 9 pediatric glioblastomas (1–9 pGBMs), through whole-exome sequencing (WES) using HiSeq1000 platform (Illumina) with paired-end approach. On the basis of our results, we extended our study in another group of 16 epileptogenic mixed neuronal-glial tumors of pediatric age, (WHO grade I and II), through an amplicon approach (TSCA) using MiniSeq System platform (Illumina)
RESULTS
We identified variants in SCN1A gene in 3/9 pGBMs: case 3 had c.5782C>G in tumor and blood; case 5 showed c.2278G>T and two mosaic variants (c.5933C>T, 22% and c.4942C>T, 14%); case 6 showed c.667G>T variant only in tumor, and not in other non tumoral tissues (blood, urine and buccal swab). No variants in SCN1A were identified in a group of 16 pediatric mixed gliomas
CONCLUSION
In this study, we explore the genetic background of two groups of pediatric neuroepithelial brain tumors, through Next generation sequencing approach. We identified only in pGBMs variants in SCN1A gene that encoded for VGSCs and is involved in a spectrum of early-onset epileptic encephalopathies. None of our mutated patients showed history of epilepsy. Now, it is not clear the significance of these variants in pGBMs but interestingly, these variants are present in pGBM and not in mixed gliomas. Further studies on a big cohort of patients are needed to establish if they could play a role in pGBMs aggressiveness, migration and progression. Moreover, VGSCs could be a pharmacological target in pGBMs treatment
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Affiliation(s)
- L Giunti
- Medical Genetics Unit, Meyer Children Hospital, Firenze, Italy
| | - V Cetica
- Child Neurology Unit, Meyer Children’s University Hospital, Firenze, Italy
| | - V De Gregorio
- Neuro-Oncology Unit, Meyer Children’s University Hospital, Firenze, Italy
| | - D Mei
- Child Neurology Unit, Meyer Children’s University Hospital, Firenze, Italy
| | - C Barba
- Child Neurology Unit, Meyer Children’s University Hospital, Firenze, Italy
| | - A Buccoliero
- Pathology Unit Meyer Children’s University Hospital, Firenze, Italy
| | - L Genitori
- Neurosurgery Unit, Meyer Children’s University Hospital, Firenze, Italy
| | - R Guerrini
- Child Neurology Unit, Meyer Children’s University Hospital, Firenze, Italy
| | - S Giglio
- Medical Genetics Unit, Meyer Children Hospital, Firenze, Italy
| | - I Sardi
- Neuro-Oncology Unit, Meyer Children’s University Hospital, Firenze, Italy
| | - M Guidi
- Medical Genetics Unit, Meyer Children Hospital, Firenze, Italy
| | - M Censullo
- Medical Genetics Unit, Meyer Children Hospital, Firenze, Italy
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Wang Y, Han C, Mei D. Standing Surface Acoustic Wave-Assisted Fabrication of Region-Selective Microstructures via User-Defined Waveguides. Langmuir 2019; 35:11225-11231. [PMID: 31390213 DOI: 10.1021/acs.langmuir.9b01565] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polymer-based substrate with region-selective microstructures are crucial for many biomedical applications. Here, we explored a novel method based on standing surface acoustic waves (SSAWs) for the fabrication of localized polymer-based microstructures via a predefined waveguide. When the SSAWs are excited, the generated acoustic pressure field can be controlled in a predetermined region of the fluid surface through controlling the size and shape of the waveguide geometry. On the basis of the capillary wave motion, the generated acoustic pressure field can excite microwavy patterned structures on the surface. Then with use of ultraviolet (UV) solidification, the polymer-based substrates with region-selective patterned microstructures can be successfully fabricated. Both finite element modeling and experimental studies demonstrated that the polymer substrate with different region-selective microstructures can be achieved by selecting the pairs of interdigital transducers (IDTs) and shapes of the predefined waveguides. The results showed that the proposed method is effective for fabricating polymer-based substrate with region-selective microstructures and may have potential in cell-laden chips for tissue engineering, cell-cell interactions, and other biomedical applications.
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35
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Xue D, Zhang J, Wang Y, Mei D. Digital Light Processing-Based 3D Printing of Cell-Seeding Hydrogel Scaffolds with Regionally Varied Stiffness. ACS Biomater Sci Eng 2019; 5:4825-4833. [DOI: 10.1021/acsbiomaterials.9b00696] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Dai Xue
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jiaxin Zhang
- Department of Toxicology, Fourth Military Medical University, Xi’an 710032, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
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36
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Mei D, Zhu Z, Mei C, Chen Z, Yuan Y. Fractal morphology features and carbon component analysis of diesel particulates. Environ Sci Pollut Res Int 2019; 26:14014-14023. [PMID: 30852755 DOI: 10.1007/s11356-019-04783-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
External morphology and internal carbonaceous compositions are important characteristics for the source recognition of atmospheric particulate matter (PM). The fractal dimension of morphology and carbon components of diesel PM with different sizes both at high and low load were studied through fractal theory and thermal optical reflection method. It is revealed that small-size PM absorbs more soluble organic fractions and correspondingly has greater box dimension. Due to heavy aggregation, PM collected at low load has greater box dimension than that at high load because of heavy aggregation. OC1, which is the most volatile among organic carbons, is remarkably increased at low load or for small-size PM, absorbing more unburned hydrocarbons. At low load, a large amount of EC1 (char-EC) is generated and the ratio of OC/EC is more than 10, while, at high load, the EC is mainly composed of EC2 (soot-EC) and the ratio of OC/EC is less than 1. Apparently, the box dimension from the morphology of diesel PM presents a positive correlation with the ratio of OC/EC. Via above external and internal characteristics, particulates exhausted from motor vehicles in the atmosphere can be beneficially identified.
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Affiliation(s)
- Deqing Mei
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China.
| | - Zongning Zhu
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Congwei Mei
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Zong Chen
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Yinnan Yuan
- School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
- College of Energy, Soochow University, Suzhou, 215006, People's Republic of China
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37
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Bai JF, Mei D, Han HX, Zhang S, Feng R, Li JT, Wang T, Zhang CL, Ning SY, Liu H. [The prognosis value of comprehensive geriatric assessment in elder patients with acute myeloid leukemia in a single center]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:200-203. [PMID: 30929386 PMCID: PMC7342533 DOI: 10.3760/cma.j.issn.0253-2727.2019.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
目的 评价综合老年学评估(CGA)在老年急性髓系白血病(AML)患者中预后价值。 方法 纳入73例北京医院诊断的年龄≥ 60岁的AML患者,CGA评估选取日常活动功能量表、工具性日常活动功能量表以及改良老年疾病累计评分表。以评分量表及患者年龄为标准,将患者分为适合、不适合以及脆弱组。 结果 73例患者中男46例,女27例,中位年龄75(60~89)岁。适合组37例(50.1%),不适合组14例(19.2%),脆弱组22例(30.7%),三组分别有33例(89.2%)、8例(57.1%)、10例(45.5%)患者接受化疗(标准化疗或去甲基化治疗),三组患者总反应率分别为68.7%、62.5%、75.0%(χ2=0.615,P=0.769)。适合组、不适合组、脆弱组的早期死亡率(8周死亡率)分别为5.4%、7.1%、27.3%(P<0.05),1年预计总生存率分别为64.9%、28.6%、22.7%(P<0.05)。单因素生存分析显示CGA评分、年龄、ECOG评分、WHO分型(2016)均是影响AML患者生存时间的因素(P<0.05)。 结论 CGA可预测老年AML患者的早期死亡率及远期生存。
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Affiliation(s)
- J F Bai
- Department of Hematology, Beijing Hospital, National Center of Gerontology, Beijing 100730, China
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Zhao B, Mei D, Zhang J, Zou S, Lu H, Xu H, Huang B. The prognostic significance of macroscopic serosal change in subserosal invasion (stage T3) gastric cancer. Ann R Coll Surg Engl 2019; 101:249-255. [PMID: 30602290 DOI: 10.1308/rcsann.2018.0217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND For patients with gastric cancer intraoperative macroscopic serosal change is not always consistent with pathological T stage. We investigated whether macroscopic serosal change is associated with unfavourable prognosis of patients with gastric cancer. METHODS We reviewed 856 patients with stage T3 gastric cancer who underwent curative gastrectomy in our institution. All patients were classified as serosa negative and serosa positive according to the macroscopic serosal change during the operation. The prognostic difference between two groups was compared and clinicopathologic features were analysed. RESULTS The percentage of macroscopic serosal change accounted for 55.7% of all patients. Compared with normal serosal surface, the patients with macroscopic serosal change had larger tumour size, more extensive stomach involvement and more advanced stage N. The prognosis of stage T3 with macroscopic serosal change was significantly poorer than that of those with normal serosal surface, especially for those with stages T3N0 and T3N1. Multivariate analysis identified macroscopic serosal change as an independent factor associated with unfavourable prognosis of stage T3 cancer. CONCLUSION Although the depth of tumour invasion mainly depends on pathological evaluation after surgery, the prognostic significance of intraoperative macroscopic serosal change should not be ignored for those patients with subserosal invasion.
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Affiliation(s)
- B Zhao
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University , Shenyang , China
| | - D Mei
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University , Shenyang , China
| | - J Zhang
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University , Shenyang , China
| | - S Zou
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University , Shenyang , China
| | - Hn Lu
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University , Shenyang , China
| | - H Xu
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University , Shenyang , China
| | - B Huang
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University , Shenyang , China
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Yu C, Zhu W, Sun B, Mei D, Gou M, Chen S. Modulating physical, chemical, and biological properties in 3D printing for tissue engineering applications. Appl Phys Rev 2018; 5:041107. [PMID: 31938080 PMCID: PMC6959479 DOI: 10.1063/1.5050245] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 09/17/2018] [Indexed: 02/05/2023]
Abstract
Over the years, 3D printing technologies have transformed the field of tissue engineering and regenerative medicine by providing a tool that enables unprecedented flexibility, speed, control, and precision over conventional manufacturing methods. As a result, there has been a growing body of research focused on the development of complex biomimetic tissues and organs produced via 3D printing to serve in various applications ranging from models for drug development to translational research and biological studies. With the eventual goal to produce functional tissues, an important feature in 3D printing is the ability to tune and modulate the microenvironment to better mimic in vivo conditions to improve tissue maturation and performance. This paper reviews various strategies and techniques employed in 3D printing from the perspective of achieving control over physical, chemical, and biological properties to provide a conducive microenvironment for the development of physiologically relevant tissues. We will also highlight the current limitations associated with attaining each of these properties in addition to introducing challenges that need to be addressed for advancing future 3D printing approaches.
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Affiliation(s)
- Claire Yu
- Department of NanoEngineering, University of California San
Diego, 9500 Gilman Drive, La Jolla, California 92093,
USA
| | - Wei Zhu
- Department of NanoEngineering, University of California San
Diego, 9500 Gilman Drive, La Jolla, California 92093,
USA
| | - Bingjie Sun
- Department of NanoEngineering, University of California San
Diego, 9500 Gilman Drive, La Jolla, California 92093,
USA
| | - Deqing Mei
- Department of Mechanical Engineering, Zhejiang
University, Hangzhou 310027, China
| | - Maling Gou
- State Key Laboratory of Biotherapy and Cancer Center, West
China Hospital, Sichuan University and Collaborative Innovation Center of
Biotherapy, Chengdu, People's Republic of China
| | - Shaochen Chen
- Department of NanoEngineering, University of California San
Diego, 9500 Gilman Drive, La Jolla, California 92093,
USA
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Xue D, Wang Y, Zhang J, Mei D, Wang Y, Chen S. Projection-Based 3D Printing of Cell Patterning Scaffolds with Multiscale Channels. ACS Appl Mater Interfaces 2018; 10:19428-19435. [PMID: 29782142 DOI: 10.1021/acsami.8b03867] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
To fully actualize artificial, cell-laden biological models in tissue engineering, such as 3D organoids and organs-on-a-chip systems, cells need to be patterned such that they can precisely mimic natural microenvironments in vitro. Despite increasing interest in this area, patterning cells at multiscale (∼10 μm to 10 mm) remains a significant challenge in bioengineering. Here, we report a projection-based 3D printing system that achieves rapid and high-resolution fabrication of hydrogel scaffolds featuring intricate channels for multiscale cell patterning. Using this system, we were able to use biocompatible poly(ethylene glycol)diacrylate in fabricating a variety of scaffold architectures, ranging from regular geometries such as serpentine, spiral, and fractal-like to more irregular/intricate geometries, such as biomimetic arborescent and capillary networks. A red food dye solution was able to freely fill all channels in the scaffolds, from the trunk (>1100 μm in width) to the small branch (∼17 μm in width) without an external pump. The dimensions of the printed scaffolds remained stable over 3 days while being immersed in Dulbecco's phosphate-buffered saline at 37 °C, and a penetration analysis revealed that these scaffolds are suitable for metabolic and nutrient transport. Cell patterning experiments showed that red fluorescent protein-transfected A549 human nonsmall lung cancer cells adhered well in the scaffolds' channels, and showed further attachment and penetration during cell culture proliferation.
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Affiliation(s)
- Dai Xue
- Department of NanoEngineering , University of California , San Diego , California 92093 , United States
| | | | - Jiaxin Zhang
- Department of Toxicology , Fourth Military Medical University , Xi'an 710032 , China
| | | | | | - Shaochen Chen
- Department of NanoEngineering , University of California , San Diego , California 92093 , United States
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Liu H, Gao M, Mei D, Han HX, Li JT, Bai JF, Zhang CL, Feng R, Wei JP, Tian Y, Wang T. [A comparative study of comprehensive geriatric assessment in elder patients with non-Hodgkin's lymphoma]. Zhonghua Nei Ke Za Zhi 2018; 57:330-334. [PMID: 29747287 DOI: 10.3760/cma.j.issn.0578-1426.2018.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To measure the comprehensive geriatric assessment (CGA) in elder non-Hodgkin's Lymphoma (NHL) patients in a cross-sectional study; to compare the differences between Eastern Cooperative Oncology Group (ECOG)-performance status (PS) and CGA. Methods: CGA stratification included the following 3 instrument assessments: activity of daily living (ADL);instrumental activity of daily living (IADL);comorbidity score according to the modified cumulative illness rating score for geriatrics (MCIRS-G). According to CGA and age, NHL patients, aged ≥60 years, were classified as"fit","unfit"and"frail"groups. ECOG-PS was evaluated and compared with CGA. Results: According to CGA, 51.6% senior NHL patients (33 cases) were classified as"fit", 12.5%(8 cases) as"unfit"and 35.9%(23 cases) as"frail". Several comorbidities were observed in majority patients, such as cardiovascular disease, diabetes mellitus and hypertension. In the"younger aged"patients between 60 to 64ys, 25%(3/12) was considered as"frail". However, this proportion increased to 42.9%(6/14) in patients older than 80ys. Moreover, impaired CGA was observed in 38.9%(21/54) of ECOG-PS ≤1 patient. Conclusions: Impaired CGA is as common as approximately half in elderly NHL patients and more than one third even in ECOG-PS ≤1 patients. ECOG-PS may underestimate the impaired fitness function in elder NHL patients.
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Affiliation(s)
- H Liu
- Department of Hematology, Beijing Hospital, Beijing 100730, China
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42
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Abstract
Hydrogel scaffolds that mimic the native extracellular matrix (ECM) environment is a crucial part of tissue engineering. It has been demonstrated that cell behaviors can be affected by not only the hydrogel's physical and chemical properties, but also its three dimensional (3D) geometrical structures. In order to study the influence of 3D geometrical cues on cell behaviors as well as the maturation and function of engineered tissues, it is imperative to develop 3D fabrication techniques to create micro and nanoscale hydrogel constructs. Among existing techniques that can effectively pattern hydrogels, two-photon polymerization (2PP)-based femtosecond laser 3D printing technology allows one to produce hydrogel structures with 100 nm resolution. This article reviews the basics of this technique as well as some of its applications in tissue engineering.
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Affiliation(s)
- Shangting You
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093-0448, USA
| | - Jiawen Li
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093-0448, USA
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230026, China
| | - Wei Zhu
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093-0448, USA
| | - Claire Yu
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093-0448, USA
| | - Deqing Mei
- Department of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Shaochen Chen
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093-0448, USA
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Shi Y, Wang Y, Mei D, Feng B, Chen Z. Design and Fabrication of Wearable Thermoelectric Generator Device for Heat Harvesting. IEEE Robot Autom Lett 2018. [DOI: 10.1109/lra.2017.2734241] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zhao B, Li M, Ren C, Liu XY, Mei D. Aggravated nausea and vomiting induced by fat emulsion for hyperemesis gravidarum: A case report. J Clin Pharm Ther 2017; 42:618-620. [PMID: 28474354 DOI: 10.1111/jcpt.12545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 04/03/2017] [Indexed: 11/30/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Total parental nutrition (TPN) for hyperemesis gravidarum (HG) is generally effective and well-tolerated. We report a case of aggravated nausea and vomiting caused by fat emulsion. CASE DESCRIPTION A 40-year-old pregnant woman through IVF was admitted to the hospital at 11-week gestation and diagnosed with HG. During TPN treatment, the patient suffered from aggravated nausea and vomiting. We identified fat emulsion as the most likely culprit using challenge, dechallenge and rechallenge. WHAT IS NEW AND CONCLUSION This is the first report of fat emulsion aggravating nausea and vomiting in such situation.
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Affiliation(s)
- B Zhao
- Department of Pharmacy, Peking Union Medical College Hospital, Beijing, China
| | - M Li
- Department of Pharmacy, Peking Union Medical College Hospital, Beijing, China.,Department of Pharmacy, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - C Ren
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, China
| | - X Y Liu
- College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - D Mei
- Department of Pharmacy, Peking Union Medical College Hospital, Beijing, China
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Wallen SP, Lee J, Mei D, Chong C, Kevrekidis PG, Boechler N. Discrete breathers in a mass-in-mass chain with Hertzian local resonators. Phys Rev E 2017; 95:022904. [PMID: 28297872 DOI: 10.1103/physreve.95.022904] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Indexed: 11/07/2022]
Abstract
We report on the existence of discrete breathers in a one-dimensional, mass-in-mass chain with linear intersite coupling and nonlinear, precompressed Hertzian local resonators, which is motivated by recent studies of the dynamics of microspheres adhered to elastic substrates. After predicting theoretically the existence of discrete breathers in the continuum and anticontinuum limits of intersite coupling, we use numerical continuation to compute a family of breathers interpolating between the two regimes in a finite chain, where the displacement profiles of the breathers are localized around one lattice site. We then analyze the frequency-amplitude dependence of the breathers by performing numerical continuation on a linear eigenmode (vanishing amplitude) solution of the system near the upper band gap edge. Finally, we use direct numerical integration of the equations of motion to demonstrate the formation and evolution of the identified localized modes in energy-conserving and dissipative scenarios, including within settings that may be relevant to future experimental studies.
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Affiliation(s)
- S P Wallen
- Department of Mechanical Engineering, University of Washington, Seattle, Washington 98195, USA
| | - J Lee
- Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515, USA
| | - D Mei
- Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515, USA
| | - C Chong
- Department of Mathematics, Bowdoin College, Brunswick, Maine 04011, USA
| | - P G Kevrekidis
- Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515, USA
| | - N Boechler
- Department of Mechanical Engineering, University of Washington, Seattle, Washington 98195, USA
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46
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47
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Liu H, Wang Y, Mei D, Shi Y, Chen Z. Design of a Wearable Thermoelectric Generator for Harvesting Human Body Energy. Wearable Sensors and Robots 2017. [DOI: 10.1007/978-981-10-2404-7_5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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Capuano A, Vollono C, Rubino M, Mei D, Calì C, De Angelis A, Di Trapani G, Servidei S, Della Marca G. Hypnic Headache: Actigraphic and Polysomnographic Study of a Case. Cephalalgia 2016; 25:466-9. [PMID: 15910573 DOI: 10.1111/j.1468-2982.2005.00871.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- A Capuano
- Institute of Neurology, Department of Neurosciences, Catholic University, 8-00168 Rome, Italy
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Wang Y, Xi K, Mei D, Liang G, Chen Z. A Flexible Tactile Sensor Array Based on Pressure Conductive Rubber for Contact Force Measurement and Slip Detection. J Robot Mechatron 2016. [DOI: 10.20965/jrm.2016.p0378] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
[abstFig src='/00280003/14.jpg' width=""300"" text='A wearable tactile sensor array for three-axis contact force measurement and slip detection in prosthetic hand grasping' ] Using INASTAMOR pressure-conductive rubber as the sensing material, we developed a flexible tactile sensor array to measure three-axis contact force and slip. The sensor array has 9 (3 × 3) sensing units, each consisting of three layers, i.e., a bottom electrode, conductive rubber chips, a top polydimethylsiloxane (PDMS) bump. We detailed the array’s structural design, working principle, and fabrication process. We also characterize the array’s three-axis force measurement performance. The full-scale force measurement ranges and sensitivities in <em>x</em>-, <em>y</em>-, and <em>z</em>-axes are characterized as 5, 5, 20 N and 0.675, 0.677, 0.251 V/N, respectively. The array is mounted on a prosthetic hand for detecting contact force and slip occurrence in grasping. Results showed that the array measures three-axis contact force and detects slippage by using discrete wavelet transformation. The tactile sensor array has potential applications in robot-hand grasping that require simultaneous slip detection and three-axis contact force measurement.
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Zhu W, Ma X, Gou M, Mei D, Zhang K, Chen S. 3D printing of functional biomaterials for tissue engineering. Curr Opin Biotechnol 2016; 40:103-112. [PMID: 27043763 DOI: 10.1016/j.copbio.2016.03.014] [Citation(s) in RCA: 381] [Impact Index Per Article: 47.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 03/08/2016] [Accepted: 03/15/2016] [Indexed: 02/05/2023]
Abstract
3D printing is emerging as a powerful tool for tissue engineering by enabling 3D cell culture within complex 3D biomimetic architectures. This review discusses the prevailing 3D printing techniques and their most recent applications in building tissue constructs. The work associated with relatively well-known inkjet and extrusion-based bioprinting is presented with the latest advances in the fields. Emphasis is put on introducing two relatively new light-assisted bioprinting techniques, including digital light processing (DLP)-based bioprinting and laser based two photon polymerization (TPP) bioprinting. 3D bioprinting of vasculature network is particularly discussed for its foremost significance in maintaining tissue viability and promoting functional maturation. Limitations to current bioprinting approaches, as well as future directions of bioprinting functional tissues are also discussed.
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Affiliation(s)
- Wei Zhu
- NanoEngineering Department, University of California, San Diego, USA
| | - Xuanyi Ma
- Bioengineering Department, University of California, San Diego, USA
| | - Maling Gou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Deqing Mei
- Department of Mechanical Engineering, Zhejiang University, China
| | - Kang Zhang
- Shiley Eye Center and Institute for Genomic Medicine, University of California, San Diego, USA
| | - Shaochen Chen
- NanoEngineering Department, University of California, San Diego, USA; Bioengineering Department, University of California, San Diego, USA.
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