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Maciejewski B, Dłabiszewska J, Mikolaszek B, Sznitowska M. The Impact of Liquid Components on Alteration of the Adhesion of Polyacrylate and Silicone Patches. Polymers (Basel) 2023; 15:4355. [PMID: 38006080 PMCID: PMC10674843 DOI: 10.3390/polym15224355] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/20/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
Polyacrylates and polysiloxanes are polymers used in pressure-sensitive adhesive (PSA) patches. Liquid additives are co-solvents of the active substances or permeation enhancers, and their compatibility with the polymeric matrix and the effect on adhesive properties should be considered. The patches were prepared from commercial polyacrylates (three types of Duro-Tak®) and siloxanes (Bio-PSA® and Soft Skin Adhesive®). Propylene glycol, polyoxyethylene glycol, isopropyl myristate, triacetin, triethyl citrate and silicone oil were added (10% w/w). Formulations were evaluated microscopically and with a texture analyzer in terms of in vitro adhesiveness and hardness. Only silicone oil was compatible with the silicone matrices. The best compatibility of acrylic PSA was observed with triethyl citrate; one out of three Duro-Tak matrices was incompatible with every additive. In all compositions, the adhesiveness was impaired by the liquid additives. A significant drop in adhesiveness was noted after immersion of the patches in buffer and drying. The probe tack test was considered as the most useful for evaluation of the effect of the liquid additive on adhesiveness, but the results obtained with a spherical and cylindrical probe were contradictory. The structural changes caused by the additives were also demonstrated by a 90° peel test, considered as complementary to the tack test.
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Affiliation(s)
- Bartosz Maciejewski
- Department of Pharmaceutical Technology, Medical University of Gdańsk, Hallera Av. 107, 80-416 Gdańsk, Poland; (B.M.); (B.M.)
| | - Joanna Dłabiszewska
- Scientific Student Circle “ISPE—Industrial Pharmacy”, Medical University of Gdańsk, Hallera Av. 107, 80-416 Gdańsk, Poland
| | - Barbara Mikolaszek
- Department of Pharmaceutical Technology, Medical University of Gdańsk, Hallera Av. 107, 80-416 Gdańsk, Poland; (B.M.); (B.M.)
| | - Małgorzata Sznitowska
- Department of Pharmaceutical Technology, Medical University of Gdańsk, Hallera Av. 107, 80-416 Gdańsk, Poland; (B.M.); (B.M.)
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2
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Park K, Kang K, Kim J, Kim SD, Jin S, Shin M, Son D. Balanced Coexistence of Reversible and Irreversible Covalent Bonds in a Conductive Triple Polymeric Network Enables Stretchable Hydrogels with High Toughness and Adhesiveness. ACS Appl Mater Interfaces 2022; 14:56395-56406. [PMID: 36484343 DOI: 10.1021/acsami.2c17676] [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: 06/17/2023]
Abstract
The application of soft hydrogels to stretchable devices has attracted increasing attention in deformable bioelectronics owing to their unique characteristic, "modulus matching between materials and organs". Despite considerable progress, their low toughness, low conductivity, and absence of tissue adhesiveness remain substantial challenges associated with unstable skin-interfacing, where body movements undesirably disturb electrical signal acquisitions. Herein, we report a material design of a highly tough strain-dissipative and skin-adhesive conducting hydrogel fabricated through a facile one-step sol-gel transition and its application to an interactive human-machine interface. The hydrogel comprises a triple polymeric network where irreversible amide linkage of polyacrylamide with alginate and dynamic covalent bonds entailing conjugated polymer chains of poly(3,4-ethylenedioxythiophene)-co-(3-thienylboronic acid) are simultaneously capable of high stretchability (1300% strain), efficient strain dissipation (36,209 J/m2), low electrical resistance (590 Ω), and even robust skin adhesiveness (35.0 ± 5.6 kPa). Based on such decent characteristics, the hydrogel was utilized as a multifunctional layer for successfully performing either electrophysiological cardiac/muscular on-skin sensors or an interactive stretchable human-machine interface.
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Affiliation(s)
- Kyuha Park
- Department of Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon16419, Republic of Korea
| | - Kyumin Kang
- Department of Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon16419, Republic of Korea
| | - Jungwoo Kim
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon16419, Republic of Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Sung Dong Kim
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon16419, Republic of Korea
- Department of Biomedical Engineering, Sungkyunkwan University (SKKU), Institute for Convergence, Suwon16419, Republic of Korea
| | - Subin Jin
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon16419, Republic of Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Mikyung Shin
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon16419, Republic of Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Department of Biomedical Engineering, Sungkyunkwan University (SKKU), Institute for Convergence, Suwon16419, Republic of Korea
| | - Donghee Son
- Department of Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon16419, Republic of Korea
- Department of Superintelligence Engineering, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
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3
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Byvalov AA, Dudina LG, Ivanov SA, Kopylov PK, Svetoch TE, Konyshev IV, Morozova NA, Anisimov AP, Dentovskaya SV. Yersinia pestis Surface Antigens in Reception of Specific Bacteriophages. Bull Exp Biol Med 2022; 174:241-245. [PMID: 36598665 DOI: 10.1007/s10517-023-05681-w] [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: 12/30/2021] [Indexed: 01/05/2023]
Abstract
The significance of Yersinia pestis surface antigens in adhesiveness to specific bacteriophages has been studied with the use of two methodological approaches. It was shown that Ail protein immobilized on the surface of polystyrene microspheres (but not in the solution), can bind both the Pokrovskaya phage and pseudotuberculous diagnostic phage. YapF autotransporter interacted with both phages in a water-soluble form, but YapF bound to polystyrene microspheres interacted only with the Pokrovskaya phage. An assumption was made that Ail and YapF proteins can be the primary receptors providing non-specific reversible binding to the phages used in this work.
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Affiliation(s)
- A A Byvalov
- Vyatka State University, Kirov, Russia. .,Komi Institute of Physiology, Komi Research Center, Ural Division of the Russian Academy of Sciences, Syktyvkar, Komi Republic, Russia.
| | - L G Dudina
- Vyatka State University, Kirov, Russia.,Komi Institute of Physiology, Komi Research Center, Ural Division of the Russian Academy of Sciences, Syktyvkar, Komi Republic, Russia
| | - S A Ivanov
- State Research Center for Applied Microbiology and Biotechnology, Federal Service for the Oversight of Consumer Protection and Welfare, Obolensk, Moscow Region, Russia
| | - P Kh Kopylov
- State Research Center for Applied Microbiology and Biotechnology, Federal Service for the Oversight of Consumer Protection and Welfare, Obolensk, Moscow Region, Russia
| | - T E Svetoch
- State Research Center for Applied Microbiology and Biotechnology, Federal Service for the Oversight of Consumer Protection and Welfare, Obolensk, Moscow Region, Russia
| | - I V Konyshev
- Vyatka State University, Kirov, Russia.,Komi Institute of Physiology, Komi Research Center, Ural Division of the Russian Academy of Sciences, Syktyvkar, Komi Republic, Russia
| | | | - A P Anisimov
- State Research Center for Applied Microbiology and Biotechnology, Federal Service for the Oversight of Consumer Protection and Welfare, Obolensk, Moscow Region, Russia
| | - S V Dentovskaya
- State Research Center for Applied Microbiology and Biotechnology, Federal Service for the Oversight of Consumer Protection and Welfare, Obolensk, Moscow Region, Russia
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Mangutov EO, Alieva AA, Kharseeva GG, Voronina NA, Alekseeva LP, Evdokimova VV, Yakusheva OA, Popivnenko MD. Corynebacterium spp.: relationship of pathogenic properties and antimicrobial resistance. Klin Lab Diagn 2022; 67:519-524. [PMID: 36099461 DOI: 10.51620/0869-2084-2022-67-9-519-524] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Corynebacterium spp. are part of the human microbiome, but can cause the development of inflammatory diseases of various localization. Purpose - to evaluate the relationship between pathogenic properties and resistance to antimicrobial drugs (AMD) of Corynebacterium spp. from patients with inflammatory diseases of the respiratory tract. Strains of Corynebacterium spp. isolated from patients with inflammatory diseases of the respiratory tract (99 pcs.) and practically healthy individuals (33 pcs.). Isolates were identified by mass spectrometric method (MALDI-ToFMS), their adhesive and invasive activity on Hep-2 cells, cytopathic effect (CPE) in CHO-K1 cell culture, and resistance to antimicrobial drugs (AMD) were determined. Indicators of adhesion (3.65±0.679(CFU±m)x102/ml), invasion (1.72±0.230 (CFU±m)x102/ml), cytotoxicity (69.1±3.8% of dead CHO-K1 cells ) Corynebasterium spp. strains isolated from patients are higher (p≤0.05) than similar indicators in practically healthy people. 90.9% of isolates from patients had resistance to AMD, in most cases (57.6±4.9%) resistance to only one AMP was noted, less often to two (25.2±4.3%), three or more (8.08±2.7%). According to the results of correlation-regression analysis, pathogenic properties (adhesiveness, invasiveness, cytotoxicity) of Corynebacterium spp. strains isolated from patients are in close direct relationship with resistance to AMD. This indicates the importance of identifying strains of non-diphtheria corynebacteria resistant to AMDs, which, under the influence of developing resistance to AMDs, can increase their pathogenic potential, moving from commensalism to parasitism.
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Affiliation(s)
- E O Mangutov
- Federal State Educational Institution of Higher Education «Rostov State Medical University» Ministry of Health of Russia
| | - A A Alieva
- Federal State Educational Institution of Higher Education «Rostov State Medical University» Ministry of Health of Russia
| | - Galina Georgievna Kharseeva
- Federal State Educational Institution of Higher Education «Rostov State Medical University» Ministry of Health of Russia
| | - N A Voronina
- Federal State Educational Institution of Higher Education «Rostov State Medical University» Ministry of Health of Russia
| | | | | | | | - M D Popivnenko
- Federal State Educational Institution of Higher Education «Rostov State Medical University» Ministry of Health of Russia
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5
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Guo K, Zhang X, Zhao D, Qin L, Jiang W, Hu W, Liu X, Xia Q, Dong Z, Zhao P. Identification and characterization of sericin5 reveals non-cocoon silk sericin components with high β-sheet content and adhesive strength. Acta Biomater 2022; 150:96-110. [PMID: 35902035 DOI: 10.1016/j.actbio.2022.07.021] [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: 01/02/2022] [Revised: 07/03/2022] [Accepted: 07/10/2022] [Indexed: 11/01/2022]
Abstract
Sericins are glue proteins on the surface of silk fibers. Four sericins have been characterized in silkworm, namely sericin1 (Ser1), sericin2 (Ser2), sericin3 (Ser3), and sericin4 (Ser4). In this study, we report a novel sericin, sericin5 (Ser5), which exists only in non-cocoon silk. We describe the sequence, exon-intron structure, and translation products of Ser5 in Bombyx mori. The Ser5 gene is approximately 22-kb long and comprises 16 exons. Ser5 protein has a size of 260 kDa, as determined by SDS-PAGE, western blot, and LC-MS/MS. Immunofluorescence analysis revealed that Ser5 co-localizes with Ser1 in the sericin layer. The expression pattern of Ser5 was detected at the transcriptional and translational levels. We systematically analyzed and compared the amino acid composition, repeat regions, and hydrophilicity of silkworm sericins. Morphological observations showed that non-cocoon silk had more sericin than cocoon silk. Circular dichroism spectra revealed that non-cocoon silk sericin contained more β-sheet structures than cocoon silk sericin. In addition, we found that the hydrophilicity and adhesive strength of native sericin increases gradually from the inner layer to the outer layer. This research enhances our understanding of various sericins from cocoon silk and non-cocoon silk with regard to their expression patterns, hydrophilicity, secondary structure and adhesive performances. STATEMENT OF SIGNIFICANCE: : Sericin is a natural biomaterial with diverse biological properties, which has long been used as tissue engineering and biomedical applications. However, the composition and distribution of sericins in different kinds of silk are still uncertain, and the properties difference between sericins have not yet been reported. Our study makes a significant contribution to the literature as it identifies the sequence, composition, hydrophilicity and adhesive property of sericins. Moreover, it provides key insights into the structure-function and function-distribution relationships associated with sericins. We believe that this study will arouse the interest to the readership of your journal as it identifies the new complete sequence of sericin and revealed the composition and properties of sericin, thus highlighting their future potentials applications in both the biomaterial and technical fields.
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Affiliation(s)
- Kaiyu Guo
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China.; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China; Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China.; Sericulture Genome and Biotechnology Engineering Laboratory, Chongqing 400716, China
| | - Xiaolu Zhang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China.; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China; Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China.; Sericulture Genome and Biotechnology Engineering Laboratory, Chongqing 400716, China
| | - Dongchao Zhao
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China.; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China; Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China.; Sericulture Genome and Biotechnology Engineering Laboratory, Chongqing 400716, China
| | - Lixia Qin
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China.; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China; Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China.; Sericulture Genome and Biotechnology Engineering Laboratory, Chongqing 400716, China
| | - Wenchao Jiang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China.; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China; Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China
| | - Wenbo Hu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China.; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China; Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China
| | - Xiao Liu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Zhaoming Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China.; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China; Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China.; Sericulture Genome and Biotechnology Engineering Laboratory, Chongqing 400716, China.
| | - Ping Zhao
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Biological Science Research Center, Southwest University, Chongqing 400716, China.; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China; Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China.; Sericulture Genome and Biotechnology Engineering Laboratory, Chongqing 400716, China.
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6
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Liu C, Zhang R, Li P, Qu J, Chao P, Mo Z, Yang T, Qing N, Tang L. Conductive Hydrogels with Ultrastretchability and Adhesiveness for Flame- and Cold-Tolerant Strain Sensors. ACS Appl Mater Interfaces 2022; 14:26088-26098. [PMID: 35608957 DOI: 10.1021/acsami.2c07501] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 06/15/2023]
Abstract
Hydrogel strain sensors with extreme temperature tolerance have recently gained great attention. However, the sensing ability of these hydrogel strain sensors changes with temperature, resulting in the variety of output signals that causes signal distortion. In this study, double-network hydrogels comprising SiO2 nanoparticles composed of polyacrylamide and phytic acid-doped polypyrrole were prepared and applied on strain sensors with a wide sensing range, high adhesiveness, and invariable strain sensitivity under flame and cold environments. The hydrogels had stable conductivity, excellent adhesive strength of up to 79.7 kPa on various substrates, and high elongation of up to 1896% at subzero temperature and after heating. They also exhibited effective flame retardancy with low surface temperature (71.2 °C) after 1200 s of heating (200 °C) and antifreezing properties at a low temperature of -20 °C. Remarkably, even under cold temperature and heat treatment, the hydrogel-based strain sensor displayed consistent sensing behaviors in detecting human motions with a broad strain range (up to 500%) and steady gauge factor (GF, ∼2.90). Therefore, this work paves the way for the applications of hydrogel sensors in robotic skin, human-mechanical interfaces, and health monitoring devices under harsh operating environments.
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Affiliation(s)
- Cuiwen Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Ru Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Peiwen Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Jinqing Qu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Pengjie Chao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Zongwen Mo
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Tao Yang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Ning Qing
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Liuyan Tang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
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7
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He Z, Yuan W. Highly Stretchable, Adhesive Ionic Liquid-Containing Nanocomposite Hydrogel for Self-Powered Multifunctional Strain Sensors with Temperature Tolerance. ACS Appl Mater Interfaces 2021; 13:53055-53066. [PMID: 34699172 DOI: 10.1021/acsami.1c14139] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The demand for wearable sensors consisting of multifunctional conductive hydrogels with fatigue resistance and adhesion properties is rising. More importantly, it is necessary to improve the freezing tolerance and dehydration resistance of hydrogels to avoid performance degradation in harsh environments. Herein, a robust nanocomposite ionogel was fabricated in [EMIM][Cl] ionic liquid and clay nanosheets were used as physical cross-linkers through rapid UV polymerization. The excellent mechanical properties, repeated self-adhesion to various substrates, freezing tolerance, and anti-drying properties were integrated into the nanocomposite ionic liquid hydrogel. The addition of clay nanosheets Laponite XLG endowed the ionogel with a high stretchability of up to 1200% and a tensile strength of up to 0.14 MPa, and the ionogel could be recovered when the external force was released. Ascribing to ionic liquids, the nanocomposite ionogel displayed ionic conductivity and temperature tolerance. An ionogel battery with a 0.72 V output voltage was formed by assembling the ionogel with a layer of zinc and copper sheet on each side to realize the conversion from chemical energy to electrical energy. The maximum voltage could reach 2.8 V when the four units are combined, which could provide energy for an LED bulb and could be used as a self-powered strain sensor under harsh conditions. In this work, a multifunctional ionogel self-powered sensor is proposed, which has potential applications in the fields of electronic skin, human-machine interaction, and biosensors over a wide temperature range.
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Affiliation(s)
- Zhirui He
- School of Materials Science and Engineering, Key Laboratory of Advanced Civil Materials of Ministry of Education, Tongji University, Shanghai 201804, People's Republic of China
| | - Weizhong Yuan
- School of Materials Science and Engineering, Key Laboratory of Advanced Civil Materials of Ministry of Education, Tongji University, Shanghai 201804, People's Republic of China
- Department of Interventional and Vascular Surgery, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, People's Republic of China
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8
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Lu M, Kanne CK, Reddington RC, Lezzar DL, Sheehan VA, Shevkoplyas SS. Concurrent Assessment of Deformability and Adhesiveness of Sickle Red Blood Cells by Measuring Perfusion of an Adhesive Artificial Microvascular Network. Front Physiol 2021; 12:633080. [PMID: 33995119 PMCID: PMC8113687 DOI: 10.3389/fphys.2021.633080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/24/2020] [Accepted: 04/06/2021] [Indexed: 12/12/2022] Open
Abstract
Biomarker development is a key clinical research need in sickle cell disease (SCD). Hemorheological parameters are excellent candidates as abnormal red blood cell (RBC) rheology plays a critical role in SCD pathophysiology. Here we describe a microfluidic device capable of evaluating RBC deformability and adhesiveness concurrently, by measuring their effect on perfusion of an artificial microvascular network (AMVN) that combines microchannels small enough to require RBC deformation, and laminin (LN) coating on channel walls to model intravascular adhesion. Each AMVN device consists of three identical capillary networks, which can be coated with LN (adhesive) or left uncoated (non-adhesive) independently. The perfusion rate for sickle RBCs in the LN-coated networks (0.18 ± 0.02 nL/s) was significantly slower than in non-adhesive networks (0.20 ± 0.02 nL/s), and both were significantly slower than the perfusion rate for normal RBCs in the LN-coated networks (0.22 ± 0.01 nL/s). Importantly, there was no overlap between the ranges of perfusion rates obtained for sickle and normal RBC samples in the LN-coated networks. Interestingly, treatment with poloxamer 188 decreased the perfusion rate for sickle RBCs in LN-coated networks in a dose-dependent manner, contrary to previous studies with conventional assays, but in agreement with the latest clinical trial which showed no clinical benefit. Overall, these findings suggest the potential utility of the adhesive AMVN device for evaluating the effect of novel curative and palliative therapies on the hemorheological status of SCD patients during clinical trials and in post-market clinical practice.
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Affiliation(s)
- Madeleine Lu
- Department of Biomedical Engineering, University of Houston, Houston, TX, United States
| | - Celeste K Kanne
- Division of Hematology/Oncology, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Riley C Reddington
- Department of Biomedical Engineering, University of Houston, Houston, TX, United States
| | - Dalia L Lezzar
- Department of Biomedical Engineering, University of Houston, Houston, TX, United States
| | - Vivien A Sheehan
- Division of Hematology/Oncology, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Sergey S Shevkoplyas
- Department of Biomedical Engineering, University of Houston, Houston, TX, United States
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9
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Robert P, Biarnes-Pelicot M, Garcia-Seyda N, Hatoum P, Touchard D, Brustlein S, Nicolas P, Malissen B, Valignat MP, Theodoly O. Functional Mapping of Adhesiveness on Live Cells Reveals How Guidance Phenotypes Can Emerge From Complex Spatiotemporal Integrin Regulation. Front Bioeng Biotechnol 2021; 9:625366. [PMID: 33898401 PMCID: PMC8058417 DOI: 10.3389/fbioe.2021.625366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 11/02/2020] [Accepted: 03/05/2021] [Indexed: 01/13/2023] Open
Abstract
Immune cells have the ubiquitous capability to migrate disregarding the adhesion properties of the environment, which requires a versatile adaptation of their adhesiveness mediated by integrins, a family of specialized adhesion proteins. Each subtype of integrins has several ligands and several affinity states controlled by internal and external stimuli. However, probing cell adhesion properties on live cells without perturbing cell motility is highly challenging, especially in vivo. Here, we developed a novel in vitro method using micron-size beads pulled by flow to functionally probe the local surface adhesiveness of live and motile cells. This method allowed a functional mapping of the adhesiveness mediated by VLA-4 and LFA-1 integrins on the trailing and leading edges of live human T lymphocytes. We show that cell polarization processes enhance integrin-mediated adhesiveness toward cell rear for VLA-4 and cell front for LFA-1. Furthermore, an inhibiting crosstalk of LFA-1 toward VLA-4 and an activating crosstalk of VLA-4 toward LFA-1 were found to modulate cell adhesiveness with a long-distance effect across the cell. These combined signaling processes directly support the bistable model that explains the emergence of the versatile guidance of lymphocyte under flow. Molecularly, Sharpin, an LFA-1 inhibitor in lymphocyte uropod, was found involved in the LFA-1 deadhesion of lymphocytes; however, both Sharpin and Myosin inhibition had a rather modest impact on adhesiveness. Quantitative 3D immunostaining identified high-affinity LFA-1 and VLA-4 densities at around 50 and 100 molecules/μm2 in basal adherent zones, respectively. Interestingly, a latent adhesiveness of dorsal zones was not grasped by immunostaining but assessed by direct functional assays with beads. The combination of live functional assays, molecular imaging, and genome editing is instrumental to characterizing the spatiotemporal regulation of integrin-mediated adhesiveness at molecular and cell scales, which opens a new perspective to decipher sophisticated phenotypes of motility and guidance.
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Affiliation(s)
- Philippe Robert
- LAI, Aix-Marseille University, CNRS, INSERM U1067 Adhésion Cellulaires et lnflammation, Turing Center for Living Systems, Marseille, France
| | - Martine Biarnes-Pelicot
- LAI, Aix-Marseille University, CNRS, INSERM U1067 Adhésion Cellulaires et lnflammation, Turing Center for Living Systems, Marseille, France
| | - Nicolas Garcia-Seyda
- LAI, Aix-Marseille University, CNRS, INSERM U1067 Adhésion Cellulaires et lnflammation, Turing Center for Living Systems, Marseille, France
| | - Petra Hatoum
- LAI, Aix-Marseille University, CNRS, INSERM U1067 Adhésion Cellulaires et lnflammation, Turing Center for Living Systems, Marseille, France
| | - Dominique Touchard
- LAI, Aix-Marseille University, CNRS, INSERM U1067 Adhésion Cellulaires et lnflammation, Turing Center for Living Systems, Marseille, France
| | - Sophie Brustlein
- LAI, Aix-Marseille University, CNRS, INSERM U1067 Adhésion Cellulaires et lnflammation, Turing Center for Living Systems, Marseille, France
| | - Philippe Nicolas
- Aix-Marseille University, CNRS, INSERM U1104 Centre d'immunologie de Marseille-Luminy, Marseille, France
| | - Bernard Malissen
- Aix-Marseille University, CNRS, INSERM U1104 Centre d'immunologie de Marseille-Luminy, Marseille, France
| | - Marie-Pierre Valignat
- LAI, Aix-Marseille University, CNRS, INSERM U1067 Adhésion Cellulaires et lnflammation, Turing Center for Living Systems, Marseille, France
| | - Olivier Theodoly
- LAI, Aix-Marseille University, CNRS, INSERM U1067 Adhésion Cellulaires et lnflammation, Turing Center for Living Systems, Marseille, France
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10
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Yang B, Song J, Jiang Y, Li M, Wei J, Qin J, Peng W, López Lasaosa F, He Y, Mao H, Yang J, Gu Z. Injectable Adhesive Self-Healing Multicross-Linked Double-Network Hydrogel Facilitates Full-Thickness Skin Wound Healing. ACS Appl Mater Interfaces 2020; 12:57782-57797. [PMID: 33336572 DOI: 10.1021/acsami.0c18948] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [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: 02/08/2023]
Abstract
The development of natural polymer-based hydrogels, combining outstanding injectability, self-healing, and tissue adhesion, with mechanical performance, able to facilitate full-thickness skin wound healing, remains challenging. We have developed an injectable micellar hydrogel (AF127/HA-ADH/OHA-Dop) with outstanding adhesive and self-healing properties able to accelerate full-thickness skin wound healing. Dopamine-functionalized oxidized hyaluronic acid (OHA-Dop), adipic acid dihydrazide-modified HA (HA-ADH), and aldehyde-terminated Pluronic F127 (AF127) were employed as polymer backbones. They were cross-linked in situ using Schiff base dynamic covalent bonds (AF127 micelle/HA-ADH network and HA-ADH/OHA-Dop network), hydrogen bonding, and π-π stacking interactions. The resulting multicross-linked double-network design forms a micellar hydrogel. The unique multicross-linked double-network structure endows the hydrogel with both improved injection abilities and mechanical performance while self-healing faster than single-network hydrogels. Inspired by mussel foot adhesive protein, OHA-Dop mimics the catechol groups seen in mussel proteins, endowing hydrogels with robust adhesion properties. We also demonstrate the potential of our hydrogels to accelerate full-thickness cutaneous wound closure and improve skin regeneration with reduced scarring. We anticipate that our hydrogel platform based on a novel multicross-linked double-network design will transform the future development of multifunctional wound dressings.
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Affiliation(s)
- Bo Yang
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Jiliang Song
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Yuhang Jiang
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Ming Li
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Jingjing Wei
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Jiajun Qin
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Wanjia Peng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Fernando López Lasaosa
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Yiyan He
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Hongli Mao
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Jun Yang
- The Key Laboratory of Bioactive Materials Ministry of Education College of Life Science, Nankai University, Tianjin 300071, P. R. China
| | - Zhongwei Gu
- Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 210009, P. R. China
- Huaxi MR Research Center, Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
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11
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Wang N, Yu KK, Li K, Li MJ, Wei X, Yu XQ. Plant-Inspired Multifunctional Fluorescent Hydrogel: A Highly Stretchable and Recoverable Self-Healing Platform with Water-Controlled Adhesiveness for Highly Effective Antibacterial Application and Data Encryption-Decryption. ACS Appl Mater Interfaces 2020; 12:57686-57694. [PMID: 33331759 DOI: 10.1021/acsami.0c15364] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 06/12/2023]
Abstract
In recent years, hydrogels as an attractive class of intelligent soft materials have been applied in various advanced fields, including electronic materials, wearable devices, and wound dressing materials. However, it still remains a critical challenge to integrate information encryption transmission capability, antibacterial activity, high mechanical performance, adhesiveness, and self-healable ability into one material and achieve the synergistic characteristics through a simple method. In our study, a facile strategy of a plant-inspired hydrogel was proposed, which provides a novel initiator-free photo-cross-linked hydrogel system by simply mixing the coumarin derivative Pho-CA and the monomer in water, and then obtaining the hydrogel Gel-C-Am under the irradiation of UV light without adding any other cross-linking agents and initiators, and this process is very similar to the growth process of plants in nature. This novel hydrogel presents desirable mechanical properties (including twist, stretchability, and recoverability), which exhibits elongation of approximately 1600%. More interestingly, Gel-C-Am hydrogel displays reversible adhesiveness to various substrates (such as glass, paper, leaves, and rubber), and its adhesion properties can be regulated by water: the viscosity disappears when its surface becomes wet, and the viscosity will recover after the water evaporates. In addition, the developed hydrogel has certain self-healable ability. Two pieces of the Gel-C-Am hydrogel can combine together and reshape into one piece in water, and the fused hydrogel has uniform and interconnected pores under SEM. Based on the characteristic of Pho-CA whose fluorescence get recovery after UV irradiation, the hydrogel can be used in the field of encryption and decryption. Also, the resulting Gel-C-Am hydrogel shows an effective antibacterial activity and can potentially be addressed as antibacterial coatings. Taken together, the formation of the novel fluorescent hydrogel system is just like the growth of a plant in the presence of water and light, Pho-CA and the monomer will form a highly stretchable and recoverable self-healing hydrogel with water-controlled adhesiveness. The developed Gel-C-Am hydrogel shows favorable attributes and is suitable for applications in antibacterial polymeric coatings and information encryption transmission.
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Affiliation(s)
- Nan Wang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Kang-Kang Yu
- Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Kun Li
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Meng-Jie Li
- Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatological Hospital, Guangdong Province Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Xi Wei
- Operative Dentistry and Endodontics, Guanghua School of Stomatology, Affiliated Stomatological Hospital, Guangdong Province Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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12
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Gao G, Yang F, Zhou F, He J, Lu W, Xiao P, Yan H, Pan C, Chen T, Wang ZL. Bioinspired Self-Healing Human-Machine Interactive Touch Pad with Pressure-Sensitive Adhesiveness on Targeted Substrates. Adv Mater 2020; 32:e2004290. [PMID: 33174265 DOI: 10.1002/adma.202004290] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [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: 06/24/2020] [Revised: 08/17/2020] [Indexed: 06/11/2023]
Abstract
There is an increasing interest to develop a next generation of touch pads that require stretchability and biocompatibility to allow their integration with a human body, and even to mimic the self-healing behavior with fast functionality recovery upon damage. However, most touch pads are developed based on stiff and brittle electrodes with the lack of the important nature of self-healing. Polyzwitterion-clay nanocomposite hydrogels as a soft, stretchable, and transparent ionic conductor with transmittance of 98.8% and fracture strain beyond 1500% are developed, which can be used as a self-healing human-machine interactive touch pad with pressure-sensitive adhesiveness on target substrates. A surface-capacitive touch system is adopted to sense a touched position. Finger positions are perceived during both point-by-point touch and continuous moving. Hydrogel touch pads are adhered to curved or flat insulators, with the high-resolution and self-healable input functions demonstrated by drawing, writing, and playing electronic games.
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Affiliation(s)
- Guorong Gao
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, China
| | - Fangjian Yang
- School of Aeronautics and Astronautics, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Fenghua Zhou
- Unisoc Technologies Co., Ltd., Shanghai, 201203, China
| | - Jiang He
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, China
| | - Wei Lu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Peng Xiao
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Huizhen Yan
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Caofeng Pan
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, China
| | - Tao Chen
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Zhong Lin Wang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, China
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA30332, USA
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13
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Chen Y, Obadi M, Liu S, Qi Y, Chen Z, Jiang S, Xu B. Evaluation of the processing quality of noodle dough containing a high Tartary buckwheat flour content through texture analysis. J Texture Stud 2020; 51:688-697. [PMID: 32472561 DOI: 10.1111/jtxs.12539] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 12/26/2019] [Revised: 05/22/2020] [Accepted: 05/24/2020] [Indexed: 11/30/2022]
Abstract
A texture analysis method for evaluating the processing quality of noodle dough with a high Tartary buckwheat flour (BF) content was established. And then the improvement of wheat flour (WF), wheat gluten (WG), and pre-gelatinized Tartary buckwheat flour (PBF) for the processing quality of buckwheat noodle dough was compared quantitatively, and the mechanism was explored through the observation of gluten network in dough sheets. Texture results showed that the coefficients of variation of tensile strength and adhesiveness of dough sheets among 16 groups were 17.76% and 40.72%, respectively, and the intragroup variation coefficients were only 4.17% and 7.07%, respectively. The tensile strength of dough sheets was significantly positively correlated with gluten index of WF and WG. In addition, with the increase of WG and PBF addition, the tensile strength and adhesiveness of dough sheets showed a linearly increase trend. Furthermore, the gluten network in the dough sheets containing WF or WG with high gluten index distributed more evenly and compactly than that with low gluten index. The dough sheet with 9% PBF showed more uniform gluten network, compared with that without added PBF. Overall, texture analysis of dough sheet can be used to evaluate the processing quality of noodle dough containing 70% BF, and the WF and WG with high gluten index had better improvement than PBF.
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Affiliation(s)
- Yu Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Mohammed Obadi
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Shuyi Liu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Yajing Qi
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Zhongwei Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Song Jiang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Bin Xu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
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14
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Wen J, Huang Y, Duan J, Wu Y, Luo W, Zhou L, Hu C, Huang L, Zheng X, Yang W, Wen Z, Huang Y. Highly Adhesive Li-BN Nanosheet Composite Anode with Excellent Interfacial Compatibility for Solid-State Li Metal Batteries. ACS Nano 2019; 13:14549-14556. [PMID: 31789499 DOI: 10.1021/acsnano.9b08803] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Solid-state lithium metal batteries (SSLMBs) are promising energy storage devices by employing lithium metal anodes and solid-state electrolytes (SSEs) to offer high energy density and high safety. However, their efficiency is limited by Li metal/SSE interface barriers, including insufficient contact area and chemical/electrochemical incompatibility. Herein, a strategy to effectively improve the adhesiveness of Li metal to garnet-type SSE is proposed by adding only a few two-dimensional boron nitride nanosheets (BNNS) (5 wt %) into Li metal by triggering the transition from point contact to complete adhesion between Li metal and ceramic SSE. The interface between the Li-BNNS composite anode and the garnet exhibits a low interfacial resistance of 9 Ω cm2, which is significantly lower than that of bare Li/garnet interface (560 Ω cm2). Furthermore, the enhanced contact and the additional BNNS in the interface act synergistically to offer a high critical current density of 1.5 mA/cm2 and a stable electrochemical plating/striping over 380 h. Moreover, the full cell paired with the Li-BNNS composite anode and the LiFePO4 cathode shows stable cycling performance at room temperature. Our results introduce an appealing composite strategy with two-dimensional materials to overcome the interface challenges, which provide more opportunities for the development of SSLMBs.
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Affiliation(s)
- Jiayun Wen
- Institute of New Energy for Vehicles, School of Materials Science and Engineering , Tongji University , Shanghai 201804 , China
| | - Ying Huang
- Institute of New Energy for Vehicles, School of Materials Science and Engineering , Tongji University , Shanghai 201804 , China
| | - Jian Duan
- Institute of New Energy for Vehicles, School of Materials Science and Engineering , Tongji University , Shanghai 201804 , China
| | - Yongmin Wu
- State Key Laboratory of Space Power-Sources Technology , Shanghai Institute of Space Power-Sources , Shanghai 200245 , China
| | - Wei Luo
- Institute of New Energy for Vehicles, School of Materials Science and Engineering , Tongji University , Shanghai 201804 , China
| | - Lihui Zhou
- School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Chenchen Hu
- Institute of New Energy for Vehicles, School of Materials Science and Engineering , Tongji University , Shanghai 201804 , China
| | - Liqiang Huang
- Institute of New Energy for Vehicles, School of Materials Science and Engineering , Tongji University , Shanghai 201804 , China
| | - Xueying Zheng
- Institute of New Energy for Vehicles, School of Materials Science and Engineering , Tongji University , Shanghai 201804 , China
| | - Wenjuan Yang
- Institute of New Energy for Vehicles, School of Materials Science and Engineering , Tongji University , Shanghai 201804 , China
| | - Zhaoyin Wen
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai 200050 , China
| | - Yunhui Huang
- Institute of New Energy for Vehicles, School of Materials Science and Engineering , Tongji University , Shanghai 201804 , China
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15
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Huault L, Vésinet M, Brogly M, Giampaoli P, Bistac S, Bosc V. Adhesion of Bread Dough to Solid Surfaces Under Controlled Heating: Balance Between the Rheological and Interfacial Properties of Dough. J Food Sci 2019; 84:499-506. [PMID: 30706468 DOI: 10.1111/1750-3841.14462] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 02/17/2018] [Revised: 09/18/2018] [Accepted: 01/09/2019] [Indexed: 11/27/2022]
Abstract
The adhesion of wheat dough affects many aspects of industrial baking, from kneading raw dough to the final baking process. In this work, an original method was developed to study the effect of temperature on the adhesive properties of bread dough in contact with a solid surface during heating. Using this approach, it will be possible to understand the factors that affect adhesion between dough and a baking surface, which will aid in developing methods to prevent dough from sticking. Overall, the dough's adhesion to a hydrophobic surface globally decreased with an increase in temperature from 35 to 97 °C, with the exception of the temperature range between 55 and 70 °C, in which the energy of adhesion increased slightly. Under these circumstances, the evolution of adhesion was primarily shaped by the rheological properties of the dough. However, when we used a solid surface with different surface energy, the results changed significantly, which suggests that the mechanisms of adhesion during heating are governed by a balance between the interfacial and bulk properties of the heated dough. The overall decrease in the adhesion of the dough to the hydrophobic glass surface may be explained by a decrease in dough hydrophobicity due to structural and chemical changes in the dough.
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Affiliation(s)
- Lucie Huault
- Authors Huault, Vésinet, Giampaoli, and Bosc are with the Ingénierie Produits Aliments, AgroParisTech, Inra, Univ. Paris-Saclay, 1 avenue des Olympiades, 91300, Massy, France
| | - Manon Vésinet
- Authors Huault, Vésinet, Giampaoli, and Bosc are with the Ingénierie Produits Aliments, AgroParisTech, Inra, Univ. Paris-Saclay, 1 avenue des Olympiades, 91300, Massy, France
| | - Maurice Brogly
- Author Brogly, Bistac are with the Lab. de Photochimie et d'Ingénierie Macromoléculaires, Univ. de Haute Alsace, 3b rue Alfred Werner, 68093, Mulhouse Cedex, France
| | - Pierre Giampaoli
- Authors Huault, Vésinet, Giampaoli, and Bosc are with the Ingénierie Produits Aliments, AgroParisTech, Inra, Univ. Paris-Saclay, 1 avenue des Olympiades, 91300, Massy, France
| | - Sophie Bistac
- Author Brogly, Bistac are with the Lab. de Photochimie et d'Ingénierie Macromoléculaires, Univ. de Haute Alsace, 3b rue Alfred Werner, 68093, Mulhouse Cedex, France
| | - Véronique Bosc
- Authors Huault, Vésinet, Giampaoli, and Bosc are with the Ingénierie Produits Aliments, AgroParisTech, Inra, Univ. Paris-Saclay, 1 avenue des Olympiades, 91300, Massy, France
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16
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Misra G, Badoni S, Domingo CJ, Cuevas RPO, Llorente C, Mbanjo EGN, Sreenivasulu N. Deciphering the Genetic Architecture of Cooked Rice Texture. Front Plant Sci 2018; 9:1405. [PMID: 30333842 PMCID: PMC6176215 DOI: 10.3389/fpls.2018.01405] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 09/05/2018] [Indexed: 05/07/2023]
Abstract
The textural attributes of cooked rice determine palatability and consumer acceptance. Henceforth, understanding the underlying genetic basis is pivotal for the genetic improvement of preferred textural attributes in breeding programs. We characterized diverse set of 236 Indica accessions from 37 countries for textural attributes, which includes adhesiveness (ADH), hardness (HRD), springiness (SPR), and cohesiveness (COH) as well as amylose content (AC). A set of 147,692 high quality SNPs resulting from genotyping data of 700K high Density Rice Array (HDRA) derived from the Indica diversity panels of 218 lines were retained for marker-trait associations of textural attributes using single-locus (SL) genome wide association studies (GWAS) which resulted in identifying hotspot on chromosome 6 for AC and ADH attributes. Four independent multi-locus approaches (ML-GWAS) including FASTmrEMMA, pLARmEB, mrMLM, and ISIS_EM-BLASSO were implemented to dissect additional loci of major/minor effects influencing the rice texture and to overcome limitations of SL-based GWAS approach. In total 224 significant quantitative trait nucleotide (QTNs) were identified using ML-GWAS, of which 97 were validated with at least two out of the four multi-locus methods. The GWAS results were in accordance with the very significant negative correlation (r = -0.83) observed between AC and ADH, and the significant correlation exhibited by AC (r < 0.4) with HRD, SPR, and COH. The novel haplotypes and putative candidate genes influencing textural properties beyond AC will be a useful resource for deployment into the marker assisted program to capture consumer preferences influencing rice texture and palatability.
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17
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Mori H, Hamamura K, Yo S, Hamajima K, Ootani K, Honda M, Ishizuka K, Kondo H, Tanaka K, Kodama D, Hirai T, Miyazawa K, Goto S, Togari A. Conditioned medium from rat dental pulp reduces the number of osteoclasts via attenuation of adhesiveness in osteoclast precursors. J Oral Sci 2018; 60:352-359. [PMID: 29984785 DOI: 10.2334/josnusd.17-0342] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Dental pulp is known to play crucial roles in homeostasis of teeth and periodontal tissue. Although resorption of bone around the roots of nonvital teeth is occasionally observed in clinical practice, little is known about the role of dental pulp in osteoclastogenesis. Here we evaluated the effects of conditioned medium (CM) from rat dental pulp on osteoclastogenesis. It was found that the CM reduced the number of tartrate-resistant acid phosphatase (TRAP)-positive multinucleated osteoclasts, but did not alter the mRNA levels of nuclear factor of activated T-cells, cytoplasmic 1 and TRAP. To further understand the mechanism behind these results, we evaluated the effects of CM on osteoclast precursors and found that the CM removed cell processes, resulting in a significant reduction in the number of attached cells and an increase in the number of freely floating cells. Furthermore, the CM suppressed the mRNA levels of focal adhesion kinase and paxillin, which are involved in cell adhesiveness and spreading. Collectively, the present results show that CM from dental pulp serves as an inhibitor of osteoclastogenesis by reducing the number and adhesiveness of osteoclast precursors, suggesting novel therapeutic applicability for osteoporosis.
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Affiliation(s)
- Hironori Mori
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University.,Department of Orthodontics, School of Dentistry, Aichi Gakuin University
| | - Kazunori Hamamura
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University
| | - Shoyoku Yo
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University.,Department of Orthodontics, School of Dentistry, Aichi Gakuin University
| | - Kosuke Hamajima
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University.,Department of Orthodontics, School of Dentistry, Aichi Gakuin University
| | | | - Masaki Honda
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University
| | - Kyoko Ishizuka
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University
| | - Hisataka Kondo
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University
| | - Kenjiro Tanaka
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University
| | - Daisuke Kodama
- Laboratory of Neuropharmacology, School of Pharmacy, Aichi Gakuin University
| | - Takao Hirai
- Laboratory of Medical Resources, School of Pharmacy, Aichi Gakuin University
| | - Ken Miyazawa
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University
| | - Shigemi Goto
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University
| | - Akifumi Togari
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University
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18
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Jing X, Mi HY, Lin YJ, Enriquez E, Peng XF, Turng LS. Highly Stretchable and Biocompatible Strain Sensors Based on Mussel-Inspired Super-Adhesive Self-Healing Hydrogels for Human Motion Monitoring. ACS Appl Mater Interfaces 2018; 10:20897-20909. [PMID: 29863322 DOI: 10.1021/acsami.8b06475] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [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: 05/20/2023]
Abstract
Integrating multifunctionality such as adhesiveness, stretchability, and self-healing ability on a single hydrogel has been a challenge and is a highly desired development for various applications including electronic skin, wound dressings, and wearable devices. In this study, a novel hydrogel was synthesized by incorporating polydopamine-coated talc (PDA-talc) nanoflakes into a polyacrylamide (PAM) hydrogel inspired by the natural mussel adhesive mechanism. Dopamine molecules were intercalated into talc and oxidized, which enhanced the dispersion of talc and preserved catechol groups in the hydrogel. The resulting dopamine-talc-PAM (DTPAM) hydrogel showed a remarkable stretchability, with over 1000% extension and a recovery rate over 99%. It also displayed strong adhesiveness to various substrates, including human skin, and the adhesion strength surpassed that of commercial double-sided tape and glue sticks, even as the hydrogel dehydrated over time. Moreover, the DTPAM hydrogel could rapidly self-heal and regain its mechanical properties without needing any external stimuli. It showed excellent biocompatibility and improved cell affinity to human fibroblasts compared to the PAM hydrogel. When used as a strain sensor, the DTPAM hydrogel showed high sensitivity, with a gauge factor of 0.693 at 1000% strain, and was capable of monitoring various human motions such as the bending of a finger, knee, or elbow and taking a deep breath. Therefore, this hydrogel displays favorable attributes and is highly suitable for use in human-friendly biological devices.
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Affiliation(s)
- Xin Jing
- Wisconsin Institute for Discovery , University of Wisconsin-Madison , Madison , Wisconsin 53715 , United States
- Department of Mechanical Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
- Department of Industrial Equipment and Control Engineering , South China University of Technology , Guangzhou , China
| | - Hao-Yang Mi
- Wisconsin Institute for Discovery , University of Wisconsin-Madison , Madison , Wisconsin 53715 , United States
- Department of Mechanical Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
- Department of Industrial Equipment and Control Engineering , South China University of Technology , Guangzhou , China
| | - Yu-Jyun Lin
- Department of Mechanical Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Eduardo Enriquez
- Department of Mechanical Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Xiang-Fang Peng
- Department of Industrial Equipment and Control Engineering , South China University of Technology , Guangzhou , China
| | - Lih-Sheng Turng
- Wisconsin Institute for Discovery , University of Wisconsin-Madison , Madison , Wisconsin 53715 , United States
- Department of Mechanical Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
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19
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Sousa MP, Mano JF, d’Ischia M, Ruiz-Molina D. Cell-Adhesive Bioinspired and Catechol-Based Multilayer Freestanding Membranes for Bone Tissue Engineering. Biomimetics (Basel) 2017; 2:19. [PMID: 30842970 PMCID: PMC6352653 DOI: 10.3390/biomimetics2040019] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 09/25/2017] [Indexed: 12/21/2022] Open
Abstract
Mussels are marine organisms that have been mimicked due to their exceptional adhesive properties to all kind of surfaces, including rocks, under wet conditions. The proteins present on the mussel's foot contain 3,4-dihydroxy-l-alanine (DOPA), an amino acid from the catechol family that has been reported by their adhesive character. Therefore, we synthesized a mussel-inspired conjugated polymer, modifying the backbone of hyaluronic acid with dopamine by carbodiimide chemistry. Ultraviolet-visible (UV-vis) spectroscopy and nuclear magnetic resonance (NMR) techniques confirmed the success of this modification. Different techniques have been reported to produce two-dimensional (2D) or three-dimensional (3D) systems capable to support cells and tissue regeneration; among others, multilayer systems allow the construction of hierarchical structures from nano- to macroscales. In this study, the layer-by-layer (LbL) technique was used to produce freestanding multilayer membranes made uniquely of chitosan and dopamine-modified hyaluronic acid (HA-DN). The electrostatic interactions were found to be the main forces involved in the film construction. The surface morphology, chemistry, and mechanical properties of the freestanding membranes were characterized, confirming the enhancement of the adhesive properties in the presence of HA-DN. The MC3T3-E1 cell line was cultured on the surface of the membranes, demonstrating the potential of these freestanding multilayer systems to be used for bone tissue engineering.
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Affiliation(s)
| | - João F. Mano
- CICECO—Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
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Fujimoto K, Minami N, Goto T, Ishida Y, Watanabe M, Nagao K, Ichikawa T. Hardness, Cohesiveness, and Adhesiveness of Oral Moisturizers and Denture Adhesives: Selection Criteria for Denture Wearers. Dent J (Basel) 2016; 4:dj4040034. [PMID: 29563476 PMCID: PMC5806953 DOI: 10.3390/dj4040034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 08/19/2016] [Accepted: 09/23/2016] [Indexed: 12/22/2022] Open
Abstract
The mechanical properties of seven denture adhesives and eight oral moisturizers, all of which are commercially available, were evaluated using a texture profile analysis. A new assessment chart is proposed for the selection criteria of denture adhesive and oral moisturizers using a radar chart with three axes: hardness, cohesiveness, and adhesiveness.
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Affiliation(s)
- Keiko Fujimoto
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Norikazu Minami
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Takaharu Goto
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Yuichi Ishida
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Megumi Watanabe
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Kan Nagao
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Tetsuo Ichikawa
- Department of Oral & Maxillofacial Prosthodontics, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
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21
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Wagoner TB, Luck PJ, Foegeding EA. Caramel as a Model System for Evaluating the Roles of Mechanical Properties and Oral Processing on Sensory Perception of Texture. J Food Sci 2016; 81:S736-44. [PMID: 26823092 DOI: 10.1111/1750-3841.13237] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 10/13/2015] [Accepted: 01/03/2016] [Indexed: 11/30/2022]
Abstract
Food formulation can have a significant impact on texture perception during oral processing. We hypothesized that slight modifications to caramel formulations would significantly alter mechanical and masticatory parameters, which can be used to explain differences in texture perception. A multidisciplinary approach was applied by evaluating relationships among mechanical properties, sensory texture, and oral processing. Caramels were utilized as a highly adhesive and cohesive model system and the formulation was adjusted to generate distinct differences in sensory hardness and adhesiveness. Descriptive analysis was used to determine sensory texture, and mechanical properties were evaluated by oscillatory rheology, creep recovery, and pressure sensitive tack measurements. Oral processing was measured by determining activity of anterior temporalis and masseter muscles via electromyography and tracking jaw movement during chewing. The substitution of agar or gelatin for corn syrup at 0.6% w/w of the total formulation resulted in increased sensory hardness and decreased adhesiveness. Creep recovery and pressure sensitive tack testing were more effective at differentiating among treatments than oscillatory rheology. Hardness correlated inversely with creep compliance, and both stickiness and tooth adhesiveness correlated with pressure sensitive adhesive force. Harder samples, despite being less adhesive, were associated with increased muscle activity and jaw movement during mastication. Tooth packing, not linked with any mechanical property, correlated with altered jaw movement. The combination of material properties and oral processing parameters were able to explain all sensory texture differences in a highly adhesive food.
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Affiliation(s)
- Ty B Wagoner
- Dept. of Food, Bioprocessing and Nutrition Sciences, Box 7624, North Carolina State Univ, Raleigh, N.C., 27695-7624, U.S.A
| | - Paige J Luck
- Dept. of Food, Bioprocessing and Nutrition Sciences, Box 7624, North Carolina State Univ, Raleigh, N.C., 27695-7624, U.S.A
| | - E Allen Foegeding
- Dept. of Food, Bioprocessing and Nutrition Sciences, Box 7624, North Carolina State Univ, Raleigh, N.C., 27695-7624, U.S.A
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22
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Shi X, Fujie T, Saito A, Takeoka S, Hou Y, Shu Y, Chen M, Wu H, Khademhosseini A. Periosteum-mimetic structures made from freestanding microgrooved nanosheets. Adv Mater 2014; 26:3290-3296. [PMID: 24616147 DOI: 10.1002/adma.201305804] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [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: 11/25/2013] [Revised: 01/05/2014] [Indexed: 06/03/2023]
Abstract
A "sticker-like" PLGA nanosheet with microgrooved patterns is developed through a facile combination of spin coating and micropatterning techniques. The resulting microgrooved PLGA nanosheets can be physically adhered on flat or porous surfaces with excellent stability in aqueous environments and can harness the spatial arrangements of cells, which make it a promising candidate for generating biomimic periosteum for bone regenerative applications.
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Affiliation(s)
- Xuetao Shi
- WPI-Advanced Institute for Materials Research, Tohoku University, Sendai, 980-8578, Japan
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23
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Napoli PE, Coronella F, Satta GM, Zucca IA, Fossarello M. A novel OCT technique to measure in vivo the corneal adhesiveness for sodium carboxymethylcellulose in humans and its validity in the diagnosis of dry eye. Invest Ophthalmol Vis Sci 2014; 55:3179-85. [PMID: 24764061 DOI: 10.1167/iovs.13-13613] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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: 11/24/2022] Open
Abstract
PURPOSE The purpose of this work was to gather preliminary data on tear film stability, and the adhesive properties of the corneal surface in dry eye patients and control group subjects, using a new, minimally invasive optical coherence tomography (OCT) imaging method. METHODS We screened 85 human subjects for dry eye and classified them in two groups, as dry eye or normal patients. Sodium carboxymethylcellulose (NaCMC) adhesiveness over the central cornea was measured using Fourier domain anterior segment OCT. The corneal adhesiveness for NaCMC was compared between the two groups, correlated with classical tests, and analyzed for diagnostic validity and repeatability. RESULTS The corneal adhesiveness for NaCMC median and mode values was fair (between 1 and 3 minutes) for dry eye subjects (n = 36) and borderline (between 3 and 5 minutes) for control group subjects (n = 49), and was significantly different between the two groups (P < 0.001). Significant correlations were observed between the corneal adhesiveness measures and dry eye patients' symptoms (P < 0.001), Schirmer I test (P < 0.001), ocular surface staining (P < 0.001), and, particularly, fluorescein break-up time (P < 0.001). The area under the receiver operating characteristic curve was 0.94 (P < 0.001), suggesting reliable sensitivity and specificity of OCT imaging. A statistically significant intraclass correlation (ICC) value of 0.99 was found for measurements of corneal adhesiveness on two subsequent days at the same time (P < 0.001). CONCLUSIONS This minimally invasive, novel technique of OCT imaging of the corneal surface following NaCMC drop instillation provides a measure of corneal adhesiveness. This technique may improve the clinician's ability in the understanding and diagnosis of the dry eye syndrome.
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Affiliation(s)
| | - Franco Coronella
- Department of Surgical Sciences, Eye Clinic, University of Cagliari, Cagliari, Italy
| | - Giovanni Maria Satta
- Department of Surgical Sciences, Eye Clinic, University of Cagliari, Cagliari, Italy
| | - Ignazio Alberto Zucca
- Department of Surgical Sciences, Eye Clinic, University of Cagliari, Cagliari, Italy
| | - Maurizio Fossarello
- Department of Surgical Sciences, Eye Clinic, University of Cagliari, Cagliari, Italy
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Bian X, Zhang X, Sakurai Y, Jin X, Gao T, Wan R, Yamamoto J. Envelope surface ultrastructure and specific gravity of artificially fertilized Pacific cod Gadus macrocephalus eggs. J Fish Biol 2014; 84:403-421. [PMID: 24417391 DOI: 10.1111/jfb.12292] [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: 02/05/2013] [Accepted: 11/08/2013] [Indexed: 06/03/2023]
Abstract
The envelope surface ultrastructure and specific gravity of artificially fertilized eggs of the Pacific cod Gadus macrocephalus were examined. The unfertilized, demersal and slightly adhesive eggs of G. macrocephalus were almost spherical and had no oil globules. Wrinkled envelope surface with elaborated hexagonal reticulated patterns and type I micropyle were observed under a scanning electron microscope. The adhesiveness of the eggs was lost at the blastodermal-cap stage after fertilization. The micropylar canal was sealed by secretion of the perivitelline fluid, and the entire surface became rough. Numerous bacilli were deposited at the micropyle and the outer envelope surface at the late germ-ring stage and at the embryo five-eighths around the yolk stage. The micropyle was completely deformed at the embryo seven-eighths around the yolk stage. The specific gravity of the fertilized G. macrocephalus eggs ranged from c. 1·0316 to 1·0454. These values, however, sharply decreased towards the end stages of egg development to produce pelagic larvae. The ultrastructural changes in the micropyle and envelope surface of the G. macrocephalus eggs protected the embryo from microorganism infections and mechanical stress during the long incubation period. The adhesiveness and specific gravity of the eggs influenced their dispersion potential.
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Affiliation(s)
- X Bian
- The Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, CAFS, Qingdao 266071, China
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25
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Bercier A, Gonçalves S, Autefage H, Briand-Mesange F, Lignon O, Fitremann J. Calcium Phosphate Bone Cements Including Sugar Surfactants: Part Two-Injectability, Adhesive Properties and Biocompatibility. Materials (Basel) 2010; 3:5111-5129. [PMID: 28883372 PMCID: PMC5445814 DOI: 10.3390/ma3125111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [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: 10/18/2010] [Accepted: 11/30/2010] [Indexed: 11/16/2022]
Abstract
Addition of sugar surfactants, sucrose fatty acid esters and alkylpolyglucosides to a calcium phosphate cement, designed for bone reconstruction, is described. Thanks to their adsorption at the surface of the calcium phosphate particles, the sugar surfactants allowed a full injectability and brought a very good workability. Injectability was measured by monitoring force-distance curves. With some of the selected sugar surfactants adhesive properties of the cement pastes were also observed, which were measured by tack tests. Finally, some properties related to biological applications are described, including gentamicine release and osteoblast viability experiments. The whole study demonstrates that addition of these mild surfactants improved several properties of the calcium phosphate cement, without impairing function.
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Affiliation(s)
- Ariane Bercier
- Université de Toulouse, Laboratoire des IMRCP, CNRS-Université Paul Sabatier, Bâtiment 2R1, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
| | | | - Helène Autefage
- Unité INSERM 563, CPTP, Dpt. LML, Bâtiment C, Hôpital de Purpan, BP3028, 31024 Toulouse cedex 3, France
| | - Fabienne Briand-Mesange
- Unité INSERM 563, CPTP, Dpt. LML, Bâtiment C, Hôpital de Purpan, BP3028, 31024 Toulouse cedex 3, France
| | - Olivier Lignon
- Teknimed SA, 11 rue Apollo, ZI Montredon, 31240 L'UNION, France
| | - Juliette Fitremann
- Université de Toulouse, Laboratoire des IMRCP, CNRS-Université Paul Sabatier, Bâtiment 2R1, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France.
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Zhu AJ, Haase I, Watt FM. Signaling via beta1 integrins and mitogen-activated protein kinase determines human epidermal stem cell fate in vitro. Proc Natl Acad Sci U S A 1999; 96:6728-33. [PMID: 10359780 PMCID: PMC21983 DOI: 10.1073/pnas.96.12.6728] [Citation(s) in RCA: 210] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Human epidermal stem cells express higher levels of beta1 integrins and are more adhesive than keratinocytes that are destined to differentiate. To investigate whether high beta1 integrin expression and adhesiveness are essential for maintaining keratinocytes in the stem cell compartment, we introduced a dominant-negative beta1 integrin mutant, CD8beta1, into cultured human keratinocytes, thereby interfering with beta1 integrin function. Surface beta1 integrin levels, adhesiveness, and mitogen-activated protein (MAP) kinase activation on fibronectin were reduced, and exit from the stem cell compartment was stimulated. Adhesiveness and proliferative potential were restored by overexpressing wild-type beta1 integrin or by constitutive MAP kinase activation. Conversely, a dominant-negative MAP kinase kinase 1 mutant decreased adhesiveness and stem cell number in the absence of CD8beta1. MAP kinase activation by alpha6beta4-mediated adhesion and mitogens was normal in CD8beta1 cells, and constitutive MAP kinase activation did not affect adhesion and proliferation of control keratinocytes. We conclude that beta1 integrins and MAP kinase cooperate to maintain the epidermal stem cell compartment in vitro.
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Affiliation(s)
- A J Zhu
- Keratinocyte Laboratory, Imperial Cancer Research Fund, 44 Lincoln's Inn Fields, London WC2A 3PX, England, UK
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Abstract
A mutant line of 3T3 (mouse fibroblast) cells with temperature-sensitive cyclic AMP (cAMP) metabolism was isolated by selecting for low substratum adhesiveness after a change in temperature. Although the mutant is identical in behavior to the parent cell at constant temperature, a rise or fall in temperature causes a fall in intracellular cAMP levels within seconds, followed by loss of adherence to the culture dish and retraction of cell processes. The mechanism of this fall in cAMP level is at least in part excretion into the medium. The decrease in adhesiveness and retraction of processes can be blocked by analogues of cAMP or agents that elevate intracellular cAMP. The properties of this mutant imply that cAMP is a direct regulator of cell shape and adhesiveness.
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