1
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Ju J, Li L, Regmi S, Zhang X, Tang S. Microneedle-Based Glucose Sensor Platform: From Vitro to Wearable Point-of-Care Testing Systems. BIOSENSORS 2022; 12:bios12080606. [PMID: 36005002 PMCID: PMC9405967 DOI: 10.3390/bios12080606] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/23/2022] [Accepted: 07/27/2022] [Indexed: 11/21/2022]
Abstract
Significant advanced have recently been made in exploiting microneedle-based (MN-based) diabetes devices for minimally invasive wearable biosensors and for continuous glucose monitoring. Within this emerging class of skin-worn MN-based sensors, the ISF can be utilized as a rich biomarker source to diagnose diabetes. While initial work of MN devices focused on ISF extraction, the recent research trend has been oriented toward developing in vivo glucose sensors coupled with optical or electrochemical (EC) instrumentation. This outlook highlights the essential characteristics of the sensing mechanisms, rational design, sensing properties, and applications. Finally, we describe the opinions about the challenge and prospects of optical and EC MN-based device platforms for the fabrication of wearable biosensors and their application potential in the future.
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Affiliation(s)
- Jian Ju
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- Oujiang Lab, Wenzhou 325001, China
- Correspondence: (J.J.); (S.T.)
| | - Lin Li
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou 325035, China
| | - Sagar Regmi
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Xinyu Zhang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Shixing Tang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou 510515, China
- Correspondence: (J.J.); (S.T.)
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2
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Liu R, He L, Cao M, Sun Z, Zhu R, Li Y. Flexible Temperature Sensors. Front Chem 2021; 9:539678. [PMID: 34631655 PMCID: PMC8492987 DOI: 10.3389/fchem.2021.539678] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 09/07/2021] [Indexed: 01/19/2023] Open
Abstract
Temperature reflects the balance between production and dissipate of heat. Flexible temperature sensors are primary sensors used for temperature monitoring. To obtain real-time and accurate information of temperature, different flexible temperature sensors are developed according to the principle of flexible resistance temperature detector (FRTC), flexible thermocouple, flexible thermistor and flexible thermochromic, showing great potential in energy conversion and storage. In order to obtain high integration and multifunction, various flexible temperature sensors are studied and optimized, including active-matrix flexible temperature sensor, self-powered flexible temperature sensor, self-healing flexible temperature sensor and self-cleaning flexible temperature sensor. This review focuses on the structure, material, fabrication and performance of flexible temperature sensors. Also, some typical applications of flexible temperature sensors are discussed and summarized.
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Affiliation(s)
- Ruping Liu
- Beijing Institute of Graphic Communication, Beijing, China
| | - Liang He
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Meijuan Cao
- Beijing Institute of Graphic Communication, Beijing, China
| | - Zhicheng Sun
- Beijing Institute of Graphic Communication, Beijing, China
| | - Ruiqi Zhu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Ye Li
- Beijing Institute of Graphic Communication, Beijing, China
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3
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Fan X, Gu S, Wu L, Yang L. Preparation and characterization of thermoresponsive poly(N-isopropylacrylamide) copolymers with enhanced hydrophilicity. E-POLYMERS 2020. [DOI: 10.1515/epoly-2020-0061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AbstractThe poly(N-isopropylacrylamide) copolymers with the enhanced hydrophilicity were synthesized by free radical polymerization from a mixture of the monomers N-isopropylacrylamide (NIPAAm), N-vinyl pyrrolidone (NVP), hydroxypropyl methacrylate (HPM) and 3-trimethoxysilypropyl methacrylate (TMSPM) at different feeding ratios. The attenuated total reflectance-Fourier transform infrared spectrometry (ATR-FTIR), nuclear magnetic resonance (1H-NMR) and gel permeation chromatography (GPC) were applied to characterize the resultant copolymers. The lower critical solution temperature (LCST) of the copolymers was determined via dynamic light scattering (DLS). By alternating the molar ratios of NIPAAm and NVP, the copolymers were synthesized to have their own distinctive LCST from 25°C to 40°C. Regardless of the starting feed ratio used, the final copolymers had the similar monomeric ratio as planned. The copolymer films were then formed on platinum wafers by drop coating and thermal annealing owing to 3-trimethoxysilyl crosslinking and reacting with hydroxyl groups. The surface wettability and morphology of the specimens were observed using contact angle measurements and scanning electron microscopy (SEM), respectively. The results demonstrated that with the increase of the NVP content, the film surface became more hydrophilic. The surface microstructure of the thermoresponsive films varied depending on the copolymer composition and ambient temperature. The experimental results indicated that the addition of NVP not only increased the LCST of copolymers but also improved the hydrophilicity of the products derived from the copolymers. This ability to elevate the LCST of the polymers provides excellent flexibility in tailoring transitions for specific uses, like controlled drug release and nondestructive cell harvest.
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Affiliation(s)
- Xiaoguang Fan
- College of Engineering, Shenyang Agricultural University, Shenyang, 110866, China
| | - Shiya Gu
- College of Engineering, Shenyang Agricultural University, Shenyang, 110866, China
| | - Liyan Wu
- College of Engineering, Shenyang Agricultural University, Shenyang, 110866, China
| | - Lei Yang
- School of Petrochemical Engineering, Liaoning Shihua University, Fushun, 113001, China
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4
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Lee EY, Kim Y, Koo B, Noh GS, Lee H, Shin Y. A novel nucleic acid amplification system based on nano-gap embedded active disk resonators. SENSORS AND ACTUATORS. B, CHEMICAL 2020; 320:128351. [PMID: 32501366 DOI: 10.1016/j.snb.2020.128391] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 05/15/2020] [Accepted: 05/21/2020] [Indexed: 05/28/2023]
Abstract
Recent advances in nucleic acid based testing using bio-optical sensor approaches have been introduced but most are based on hybridization between the optical sensor and the bio-molecule and not on an amplification mechanism. Direct nucleic acid amplification on an optical sensor has several technical limitations, such as the sensitivity of the temperature sensor, instrument complexity, and high background signal. We here describe a novel nucleic acid amplification method based on a whispering gallery mode active resonator and discuss its potential molecular diagnostic application. By implanting nanoclusters as active compounds, this active resonator operates without tapered fiber coupling and emits a strong photoluminescence signal with low background in the wavelength of low absorption in an aqueous environment that is typical of biosensors. Our method also offers an extremely low detection threshold down to a single copy within 10 min due to the strong light-matter interaction in a nano-gap structure. We envision that this active resonator provides a high refractive index contrast for tight mode confinement with simple alignment as well as the possibility of reducing the device size so that a point-of-care system with low-cost, high-sensitivity and simplicity.
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Affiliation(s)
- Eun Yeong Lee
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Yeseul Kim
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Bonhan Koo
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Geun Su Noh
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Hansuek Lee
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Yong Shin
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
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5
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Liu K, Duan X, Yuan M, Xu Y, Gao T, Li Q, Zhang X, Huang M, Wang J. How to fit a response current-concentration curve? A semi-empirical investigation of non-enzymatic glucose sensor based on PANI-modified nickel foam. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.04.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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6
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Locke A, Means AK, Dong P, Nichols TJ, Coté GL, Grunlan MA. A Layer-by-Layer Approach To Retain a Fluorescent Glucose Sensing Assay within the Cavity of a Hydrogel Membrane. ACS APPLIED BIO MATERIALS 2018; 1:1319-1327. [PMID: 30474080 PMCID: PMC6247246 DOI: 10.1021/acsabm.8b00267] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/10/2018] [Indexed: 02/03/2023]
Abstract
A continuous glucose monitoring device that resides fully in the subcutaneous tissue has the potential to greatly improve the management of diabetes. Toward this goal, we have developed a competitive binding glucose sensing assay based on fluorescently labeled PEGylated concanavalin-A (PEGylated-TRITC-ConA) and mannotetraose (APTS-MT). In the present work, we sought to contain this assay within the hollow central cavity of a cylindrical hydrogel membrane, permitting eventual subcutaneous implantation and optical probing through the skin. A "self-cleaning" hydrogel was utilized because of its ability to cyclically deswell/reswell in vivo, which is expected to reduce biofouling and therefore extend the sensor lifetime. Thus, we prepared a hollow, cylindrical hydrogel based on a thermoresponsive electrostatic double network design composed of N-isopropylacrylamide and 2-acrylamido-2-methylpropanesulfonic acid. Next, a layer-by-layer (LbL) coating was applied to the inner wall of the central cavity of the cylindrical membrane. It consisted of 5, 10, 15, 30, or 40 alternating bilayers of positively charged poly(diallyldimethylammonium chloride) and negatively charged poly(sodium 4-styrenesulfonate). With 30 bilayers, the leaching of the smaller-sized component of the assay (APTS-MT) from the membrane cavity was substantially reduced. Moreover, this LbL coating maintained glucose diffusion across the hydrogel membrane. In terms of sensor functionality, the assay housed in the hydrogel membrane cavity tracked changes in glucose concentration (0 to 600 mg/dL) with a mean absolute relative difference of ∼11%.
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Affiliation(s)
- Andrea
K. Locke
- Department
of Biomedical Engineering, Department of Materials Science
and Engineering, Department of Chemistry, and Center for Remote Healthcare Technologies, Texas A&M University, College Station, Texas 77843-3120, United States
| | - Anna Kristen Means
- Department
of Biomedical Engineering, Department of Materials Science
and Engineering, Department of Chemistry, and Center for Remote Healthcare Technologies, Texas A&M University, College Station, Texas 77843-3120, United States
| | - Ping Dong
- Department
of Biomedical Engineering, Department of Materials Science
and Engineering, Department of Chemistry, and Center for Remote Healthcare Technologies, Texas A&M University, College Station, Texas 77843-3120, United States
| | - Tyler J. Nichols
- Department
of Biomedical Engineering, Department of Materials Science
and Engineering, Department of Chemistry, and Center for Remote Healthcare Technologies, Texas A&M University, College Station, Texas 77843-3120, United States
| | - Gerard L. Coté
- Department
of Biomedical Engineering, Department of Materials Science
and Engineering, Department of Chemistry, and Center for Remote Healthcare Technologies, Texas A&M University, College Station, Texas 77843-3120, United States
| | - Melissa A. Grunlan
- Department
of Biomedical Engineering, Department of Materials Science
and Engineering, Department of Chemistry, and Center for Remote Healthcare Technologies, Texas A&M University, College Station, Texas 77843-3120, United States
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7
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Abraham AA, Means AK, Clubb FJ, Fei R, Locke AK, Gacasan EG, Coté GL, Grunlan MA. Foreign Body Reaction to a Subcutaneously Implanted Self-Cleaning, Thermoresponsive Hydrogel Membrane for Glucose Biosensors. ACS Biomater Sci Eng 2018; 4:4104-4111. [PMID: 31633011 DOI: 10.1021/acsbiomaterials.8b01061] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Towards achieveing a subcutaneously implanted glucose biosensor with long-term functionality, a thermoresponsive membrane previously shown to have potential to house a glucose sensing assay was evaluated herein for its ability to minimize the foriegn body reaction (FBR) and the resulting fibrous capsule. The severity of the FBR proportionally reduces diffusion of glucose to the sensor and hence sensor lifetime. However, efforts to reduce the FBR have largedly focused on anti-fouling materials that passively inhibit cellular attachment, particularly poly(ethylene glycol) (PEG). Herein, the extent of the FBR of a subcutaneously implanted "self-cleaning" cylindrical membrane was analyzed in rodents. This membrane represents an "actively anti-fouling" approach to reduce cellular adhesion. It is a thermoresponsive double network nanocomposite hydrogel (DNNC) comprised of poly(N-isopropylacrylamide) (PNIPAAm) and embedded polysiloxane nanoparticles. The membrane's cyclical deswelling/reswelling response to local body temperature fluctuations was anticipated to limit cellular accumulation. Indeed, after 30 days, the self-cleaning membrane exhibited a notably thin fibrous capsule (~30 µm) and increased microvascular density within 1 mm of the implant surface in comparison to a non-thermoresponsive, benchmark biocompatible control (PEG diacrylate, PEG-DA).
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Affiliation(s)
- Alexander A Abraham
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-2120 (USA)
| | - A Kristen Means
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843 (USA)
| | - Fred J Clubb
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-2120 (USA).,Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas 77843-4467 (USA)
| | - Ruochong Fei
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-2120 (USA)
| | - Andrea K Locke
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-2120 (USA)
| | - Erica G Gacasan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-2120 (USA)
| | - Gerard L Coté
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-2120 (USA).,Center for Remote Health Technologies and Systems, Texas A&M University, College Station, TX 77843-3577 (USA)
| | - Melissa A Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-2120 (USA).,Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843 (USA).,Center for Remote Health Technologies and Systems, Texas A&M University, College Station, TX 77843-3577 (USA)
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8
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Abstract
Since its discovery in 1988, B-type natriuretic peptide (BNP) has been recognized as a powerful cardiovascular biomarker for a number of disease states, specifically heart failure. Concurrent with such a discovery, much effort has been allocated to the precise monitoring of physiological BNP levels. Thus, it can be used to guide the therapy of heart failure and determine the patient's stage of disease. Thus, we discuss in this article BNP as a potent biomarker. Subsequently, we will review the progress of biosensing devices as they could be applied to monitor BNP levels as assays, benchtop biosensors and implantable biosensors. The analytical characteristics of commercially available BNP assays are presented. Still emerging as a field, we define four obstacles that present opportunity for the future development of implantable biosensor: foreign body response, sensor renewability, sensitivity and selectivity.
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9
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Delaney C, McCluskey P, Coleman S, Whyte J, Kent N, Diamond D. Precision control of flow rate in microfluidic channels using photoresponsive soft polymer actuators. LAB ON A CHIP 2017; 17:2013-2021. [PMID: 28530723 DOI: 10.1039/c7lc00368d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel approach that allows control of flow in microfluidic channels with unsurpassed performance using light is described. Valve structures have been created using photoresponsive hydrogels based on spiropyran-functionalised pNIPAAm hydrogels photopolymerised around pillar structures within the channels. Valve actuation is controlled from outside the fluidic system using externally located LEDs. Highly precise and accurate flow rates can be selected by passing real-time flow rate measurements into a PID algorithm. The optimised algorithm also minimises overshoot of the selected flow rate, eliminates flow rate drift, and improves the system response time. In addition to the dramatic improvements in flow rate control, the set up enables the polymer actuation behaviour to be rapidly characterised. The power supply to the LED also provides a useful system diagnostic for monitoring the performance of the valve over time. For example, degradation in the valve actuation due to photodegradation will manifest as an increasing power requirement over time, enabling predictive failure thresholds to be established for particular actuator designs and polymer compositions.
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Affiliation(s)
- Colm Delaney
- Insight Centre for Data Analytics, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland.
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10
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Singha NR, Karmakar M, Mahapatra M, Mondal H, Dutta A, Roy C, Chattopadhyay PK. Systematic synthesis of pectin-g-(sodium acrylate-co-N-isopropylacrylamide) interpenetrating polymer network for superadsorption of dyes/M(ii): determination of physicochemical changes in loaded hydrogels. Polym Chem 2017. [DOI: 10.1039/c7py00316a] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Superadsorbent hydrogel with excellent physicochemical properties is used for mere/synergic chemisorption of dyes and M(ii).
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Affiliation(s)
- Nayan Ranjan Singha
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Mrinmoy Karmakar
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Manas Mahapatra
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Himarati Mondal
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Arnab Dutta
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Chandan Roy
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Pijush Kanti Chattopadhyay
- Department of Leather Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
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11
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Venault A, Hsu KJ, Yeh LC, Chinnathambi A, Ho HT, Chang Y. Surface charge-bias impact of amine-contained pseudozwitterionic biointerfaces on the human blood compatibility. Colloids Surf B Biointerfaces 2016; 151:372-383. [PMID: 28063289 DOI: 10.1016/j.colsurfb.2016.12.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 12/26/2016] [Accepted: 12/28/2016] [Indexed: 12/22/2022]
Abstract
This work discusses the impact of the charge bias and the hydrophilicity on the human blood compatibility of pseudozwitterionic biomaterial gels. Four series of hydrogels were prepared, all containing negatively-charged 3-sulfopropyl methacrylate (SA), and either acrylamide, N-isopropylacrylamide, 2-dimethylaminoethyl methacrylate (DMAEMA) or [2-(methacryloyloxy)ethyl]trimethylammonium (TMA), to form SnAm, SnNm, SnDm or SnTm hydrogels, respectively. An XPS analysis proved that the polymerization was well controlled from the initial monomer ratios. All gels present high surface hydrophilicity, but varying bulk hydration, depending on the nature/content of the comonomer, and on the immersion medium. The most negative interfaces (pure SA, S7A3, S5A5) showed significant fibrinogen adsorption, ascribed to the interactions of the αC domains of the protein with the gels, then correlated to considerable platelet adhesion; but low leukocyte/erythrocyte attachments were measured. Positive gels (excess of DMAEMA or TMA) are not hemocompatible. They mediate protein adsorption and the adhesion of human blood cells, through electrostatic attractive interactions. The neutral interfaces (zeta potential between -10mV and +10mV) are blood-inert only if they present a high surface and bulk hydrophilicity. Overall, this study presents a map of the hemocompatible behavior of hydrogels as a function of their surface charge-bias, essential to the design of blood-contacting devices.
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Affiliation(s)
- Antoine Venault
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chung-Li, Taoyuan 320, Taiwan.
| | - Ko-Jen Hsu
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chung-Li, Taoyuan 320, Taiwan
| | - Lu-Chen Yeh
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chung-Li, Taoyuan 320, Taiwan
| | - Arunachalam Chinnathambi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Hsin-Tsung Ho
- Laboratory Medicine, Mackay Memorial Hospital, Taipei 104, Taiwan
| | - Yung Chang
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chung-Li, Taoyuan 320, Taiwan.
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12
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Fei R, Means AK, Abraham AA, Locke AK, Coté GL, Grunlan MA. Self-Cleaning, Thermoresponsive P (NIPAAm-co-AMPS) Double Network Membranes for Implanted Glucose Biosensors. MACROMOLECULAR MATERIALS AND ENGINEERING 2016; 301:935-943. [PMID: 28529447 PMCID: PMC5438207 DOI: 10.1002/mame.201600044] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A self-cleaning membrane that periodically rids itself of attached cells to maintain glucose diffusion could extend the lifetime of implanted glucose biosensors. Herein, we evaluate the functionality of thermoresponsive double network (DN) hydrogel membranes based on poly(N-isopropylacrylamide) (PNIPAAm) and an electrostatic co-monomer, 2-acrylamido-2-methylpropane sulfonic acid (AMPS). DN hydrogels are comprised of a tightly crosslinked, ionized first network [P(NIPAAm-co-AMPS)] containing variable levels of AMPS (100:0-25:75 wt% ratio of NIPAAm:AMPS) and a loosely crosslinked, interpenetrating second network [PNIPAAm]. To meet the specific requirements of a subcutaneously implanted glucose biosensor, the volume phase transition temperature is tuned and essential properties, such as glucose diffusion kinetics, thermosensitivity, and cytocompatibility are evaluated. In addition, the self-cleaning functionality is demonstrated through thermally driven cell detachment from the membranes in vitro.
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Affiliation(s)
- Ruochong Fei
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-3120, USA
| | - A Kristen Means
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843-3003, USA
| | - Alexander A Abraham
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-3120, USA
| | - Andrea K Locke
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-3120, USA
| | - Gerard L Coté
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-3120, USA
| | - Melissa A Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-3120, USA
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13
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Gao B, Su L, Yang H, Shu T, Zhang X. Current control by electrode coatings formed by polymerization of dopamine at prussian blue-modified electrodes. Analyst 2016; 141:2067-71. [PMID: 26876689 DOI: 10.1039/c6an00132g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Electrode coating with polydopamine (PDA) is fast becoming a popular surface modification technique. In this study we report the investigation of the use of PDA as electrode coatings with Prussian blue (PB) as an electrode material model. The PB layer was galvanostatically deposited at an Au electrode, followed by PDA coating with the assistance of ammonium persulfate as an oxidant. The thickness of PDA coatings was measured to be ∼60 nm. Electrochemical characterization of the PDA-coated PB electrode revealed that the PDA coatings could stabilize the PB at neutral pH and allow the permeation of hydrogen peroxide (H2O2). Moreover, the PDA coatings were found to effectively exclude the common interfering compounds such as cysteine, ascorbic acid and uric acid, and exhibit selective electrocatalysis towards the electroreduction of H2O2. Accordingly, the PDA-coated PB electrode was applied for determination of H2O2 released from live cells.
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Affiliation(s)
- Bowen Gao
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Lei Su
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Hankun Yang
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Tong Shu
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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14
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Zheng J, Zhang W, Lin Z, Wei C, Yang W, Dong P, Yan Y, Hu S. Microwave synthesis of 3D rambutan-like CuO and CuO/reduced graphene oxide modified electrodes for non-enzymatic glucose detection. J Mater Chem B 2016; 4:1247-1253. [DOI: 10.1039/c5tb02624e] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Illustration of the glucose biosensing mechanism based on CuO/r-GO composites.
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Affiliation(s)
- Jianzhong Zheng
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Soochow University
- Suzhou 215123
- P. R. China
- College of Chemistry and Environment
| | - Wuxiang Zhang
- College of Chemistry and Environment
- Minnan Normal University
- Zhangzhou 363000
- P. R. China
| | - Zhongqiu Lin
- College of Chemistry and Environment
- Minnan Normal University
- Zhangzhou 363000
- P. R. China
| | - Chan Wei
- College of Chemistry and Environment
- Minnan Normal University
- Zhangzhou 363000
- P. R. China
| | - Weize Yang
- College of Chemistry and Environment
- Minnan Normal University
- Zhangzhou 363000
- P. R. China
| | - Peihui Dong
- College of Chemistry and Environment
- Minnan Normal University
- Zhangzhou 363000
- P. R. China
| | - Yaru Yan
- College of Chemistry and Environment
- Minnan Normal University
- Zhangzhou 363000
- P. R. China
| | - Shirong Hu
- College of Chemistry and Environment
- Minnan Normal University
- Zhangzhou 363000
- P. R. China
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15
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Zhang Q, Ren H, Baker GL. Synthesis and click chemistry of a new class of biodegradable polylactide towards tunable thermo-responsive biomaterials. Polym Chem 2015; 6:1275-1285. [PMID: 25685199 PMCID: PMC4326109 DOI: 10.1039/c4py01425a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of clickable and biodegradable polylactide was designed and prepared via bulk polymerization of 3,6-dipropargyloxymethyl-1,4-dioxane-2,5-dione (1) which was synthesized from easily accessible propargyloxylactic acid (5). A homopolymer of 1 and random copolymer of 1 with l-lactide were obtained as amorphous materials and exhibit low Tg of 8.5 and 34 °C, respectively, indicating their promising potentials for biomedical applications. The statistical nature of random copolymers was investigated by DSC analysis and 13C NMR spectroscopy, which implies the random distribution of terminal alkyne groups along the back bone of copolymers. The efficient click post-modification of this new class of polylactide with alkyl and mPEG azides affords novel hydrophilic biomaterials, which exhibit reversible thermo-responsive properties as evidenced by their tunable LCST ranging from 22 to 69 °C depending on the balance of the incorporated hydrophilic/hydrophobic side chains. These results indicate the generality of this new class of clickable polylactide in preparing novel smart biomaterials in a simple and efficient manner via click chemistry.
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Affiliation(s)
- Quanxuan Zhang
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA
| | - Hong Ren
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Gregory L. Baker
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA
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16
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Taktak F, Yildiz M, Sert H, Soykan C. A Novel Triple-Responsive Hydrogels Based on 2-(Dimethylamino) Ethyl Methacrylate by Copolymerization With 2-(N-morpholino) Ethyl Methacrylate. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2014. [DOI: 10.1080/10601325.2014.976747] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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17
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Fei R, Hou H, Munoz-Pinto D, Han A, Hahn MS, Grunlan MA. Thermoresponsive Double Network Micropillared Hydrogels for Controlled Cell Release. Macromol Biosci 2014; 14:1346-52. [DOI: 10.1002/mabi.201400172] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 05/03/2014] [Indexed: 11/05/2022]
Affiliation(s)
- Ruochong Fei
- Department of Biomedical Engineering; Texas A&M University, 5030 Emerging Technologies Building; College Station TX 77843 USA
| | - Huijie Hou
- Department of Electrical Engineering; Texas A&M University; College Station TX 77843 USA
| | - Dany Munoz-Pinto
- Department of Chemical Engineering; Texas A&M University; College Station TX 77843 USA
| | - Arum Han
- Department of Biomedical Engineering; Texas A&M University, 5030 Emerging Technologies Building; College Station TX 77843 USA
- Department of Electrical Engineering; Texas A&M University; College Station TX 77843 USA
| | - Mariah S. Hahn
- Department of Chemical Engineering; Texas A&M University; College Station TX 77843 USA
| | - Melissa A. Grunlan
- Department of Biomedical Engineering; Texas A&M University, 5030 Emerging Technologies Building; College Station TX 77843 USA
- Department of Materials Science and Engineerin; Texas A&M University; College Station TX 77843 USA
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