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Park S, Nam DY, Jeon HJ, Han JH, Jang D, Hwang J, Park YS, Han YG, Choy YB, Lee DY. Chromophoric cerium oxide nanoparticle-loaded sucking disk-type strip sensor for optical measurement of glucose in tear fluid. Biomater Res 2023; 27:135. [PMID: 38111009 PMCID: PMC10729336 DOI: 10.1186/s40824-023-00469-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/24/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND Noninvasive monitoring of tear glucose levels can be convenient for patients to manage their diabetes mellitus. However, there are issues with monitoring tear glucose levels, such as the invasiveness of some methods, the miniaturization, inaccuracy, or the high cost of wearable devices. To overcome the issues, we newly designed a sucking disk-type (SD) strip biosensor that can quickly suck tear fluid and contains cerium oxide nanoparticle (CNP) that causes a unique color change according to the glucose level of the tear without complicated electronic components. METHODS The SD strip biosensor composed of three distinct parts (tip, channel, and reaction chamber) was designed to contain the sensing paper, onto which tear fluid can be collected and delivered. The sensing paper treated with CNP/APTS (aminopropyltriethoxysilane) /GOx (glucose oxidase) was characterized. Then we carried out the reliability of the SD strip biosensor in the diabetic rabbit animals. We quantitatively analyzed the color values of the SD strip biosensor through the colorimetric analysis algorithm. RESULTS We contacted the inferior palpebral conjunctiva (IPC) of a diabetic rabbit eye using an SD strip biosensor to collect tears without eye irritation and successfully verified the performance and quantitative efficacy of the sensor. An image processing algorithm that can optimize measurement accuracy is developed for accurate color change measurement of SD strip biosensors. The validation tests show a good correlation between glucose concentrations measured in the tear and blood. CONCLUSION Our findings demonstrate that the CNP-embedded SD strip biosensor and the associated image processing can simply monitor tear glucose to manage diabetes mellitus.
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Affiliation(s)
- Sijin Park
- Department of Bioengineering, College of Engineering, and BK FOUR Biopharmaceutical Innovation Leader for Education and Research Group, Hanyang University, 222 Wangsimni-Ro Seongdong-Gu, Seoul, 04763, Republic of Korea
| | - Dong Yeon Nam
- College of Engineering, Interdisciplinary Program in Bioengineering, Seoul National University, 1 Gwanak-Ro Gwanak-Gu, Seoul, 08826, Republic of Korea
| | - Hee-Jae Jeon
- Department of Mechanical and Biomedical Engineering, Kangwon National University, 1 Gangwondaehak-Gil, Chuncheon, 24341, Republic of Korea
| | - Jae Hoon Han
- College of Engineering, Interdisciplinary Program in Bioengineering, Seoul National University, 1 Gwanak-Ro Gwanak-Gu, Seoul, 08826, Republic of Korea
| | - Dawon Jang
- Department of Bioengineering, College of Engineering, and BK FOUR Biopharmaceutical Innovation Leader for Education and Research Group, Hanyang University, 222 Wangsimni-Ro Seongdong-Gu, Seoul, 04763, Republic of Korea
| | - Juil Hwang
- Department of Physics, College of Natural Sciences, Hanyang University, 222 Wangsimni-Ro Seongdong-Gu, Seoul, 04763, Republic of Korea
| | - Yeong-Seo Park
- Department of Mechanical and Biomedical Engineering, Kangwon National University, 1 Gangwondaehak-Gil, Chuncheon, 24341, Republic of Korea
| | - Young-Geun Han
- Department of Physics, College of Natural Sciences, Hanyang University, 222 Wangsimni-Ro Seongdong-Gu, Seoul, 04763, Republic of Korea
| | - Young Bin Choy
- College of Engineering, Interdisciplinary Program in Bioengineering, Seoul National University, 1 Gwanak-Ro Gwanak-Gu, Seoul, 08826, Republic of Korea.
- Department of Biomedical Engineering, Seoul National University College of Medicine, 101 Daehak-Ro Jongno-Gu, Seoul, 03080, Republic of Korea.
- Institute of Medical & Biological Engineering, Medical Research Center, Seoul National University, 101 Daehak-Ro Jongno-Gu, Seoul, 03080, Republic of Korea.
| | - Dong Yun Lee
- Department of Bioengineering, College of Engineering, and BK FOUR Biopharmaceutical Innovation Leader for Education and Research Group, Hanyang University, 222 Wangsimni-Ro Seongdong-Gu, Seoul, 04763, Republic of Korea.
- Institute of Nano Science and Technology (INST) and Institute for Bioengineering and Biopharmaceutical Research (IBBR), Hanyang University, 222 Wangsimni-Ro Seongdong-Gu, Seoul, 04763, Republic of Korea.
- Elixir Pharmatech Inc, 222 Wangsimni-Ro Seongdong-Gu, Seoul, 04763, Republic of Korea.
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Sakiroff LM, Chennell P, Yessaad M, Pereira B, Bouattour Y, Sautou V. Evaluation of color changes during stability studies using spectrophotometric chromaticity measurements versus visual examination. Sci Rep 2022; 12:8959. [PMID: 35624232 PMCID: PMC9142492 DOI: 10.1038/s41598-022-13025-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 03/30/2022] [Indexed: 11/09/2022] Open
Abstract
Stability studies are essential to be able to assign an expiration date to medications. Color variation is one of the organoleptic characteristics of actives substances or medications which can indicate the presence of contaminations, impurities or degradations products. However there is no data available comparing the often used visual examination with spectrophotometric measurements during stability studies. The aim of this study was therefore to evaluate precisely how different the two methods are, by comparing the change of color of two drug formulations chosen as models, assessed by visual examination versus a spectrophotometric colorimetric analysis. Paracetamol and parenteral nutrition solutions were stored in stress conditions for up to 46 days, and were subjected to a visual examination using color reference solutions and to lightness and chromaticity measurement to determine their specific color by UV-Vis spectrophotometry. The color of paracetamol solutions changed faster when exposed to stress condition (light), as did the PNS when exposed to heat. In both cases, color variations were detected earlier and more precisely by UV-Vis spectrophotometry than by visual examination. Color measurement using an UV-Vis spectrophotometry should advantageously replace visual examination when assessing colors changes during drug stability studies.
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Affiliation(s)
| | - Philip Chennell
- Université Clermont Auvergne, CHU Clermont Ferrand, Clermont Auvergne INP, CNRS, ICCF, F-63000, Clermont-Ferrand, France.
| | - Mouloud Yessaad
- CHU Clermont-Ferrand, Pôle Pharmacie, F-63000, Clermont-Ferrand, France
| | - Bruno Pereira
- CHU Clermont-Ferrand, Unité de Biostatistiques, DRCI, F-63000, Clermont-Ferrand, France
| | - Yassine Bouattour
- Université Clermont Auvergne, CHU Clermont Ferrand, Clermont Auvergne INP, CNRS, ICCF, F-63000, Clermont-Ferrand, France
| | - Valérie Sautou
- Université Clermont Auvergne, CHU Clermont Ferrand, Clermont Auvergne INP, CNRS, ICCF, F-63000, Clermont-Ferrand, France
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Izadyar A, Van MN, Rodriguez KA, Seok I, Hood EE. A bienzymatic amperometric glucose biosensor based on using a novel recombinant Mn peroxidase from corn and glucose oxidase with a Nafion membrane. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115387] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hussain S, Park SY. Sweat-Based Noninvasive Skin-Patchable Urea Biosensors with Photonic Interpenetrating Polymer Network Films Integrated into PDMS Chips. ACS Sens 2020; 5:3988-3998. [PMID: 33259201 DOI: 10.1021/acssensors.0c01757] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A wearable noninvasive biosensor for in situ urea detection and quantification was developed using a urease-immobilized photonic interpenetrating polymer network (IPNurease) film. The photonic IPN film was intertwined with solid-state cholesteric liquid crystals (CLCsolid) and a poly(acrylic acid) (PAA) network on a flexible poly(ethylene terephthalate) substrate adhered to a poly(dimethylsiloxane) (PDMS) chip that was fabricated using an aluminum mold. The presence of urea in the chemical matrix of human sweat red-shifted the reflected color of the photonic IPNurease film, and quantification was achieved by observing the wavelength at the photonic band gap (λPBG) with a limit of detection of 0.4 mM and a linear range of 0.9-50 mM. The color changes observed in the photonic IPN film were digitalized using the CIE 1931 xy coordinates on a cell phone image, thereby enabling fast, direct diagnosis via a downloadable app. This novel PDMS chip can be expanded for use with other biosensors.
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Affiliation(s)
- Saddam Hussain
- School of Applied Chemical Engineering, Polymeric Nano Materials Laboratory, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Soo-young Park
- School of Applied Chemical Engineering, Polymeric Nano Materials Laboratory, Kyungpook National University, Daegu 41566, Republic of Korea
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Bhaskar S, Kowshik NCSS, Chandran SP, Ramamurthy SS. Femtomolar Detection of Spermidine Using Au Decorated SiO 2 Nanohybrid on Plasmon-Coupled Extended Cavity Nanointerface: A Smartphone-Based Fluorescence Dequenching Approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:2865-2876. [PMID: 32159962 DOI: 10.1021/acs.langmuir.9b03869] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Coupling of photons with molecular emitters in different nanocavities have resulted in transformative plasmonic applications. The rapidly expanding field of surface plasmon-coupled emission (SPCE) has synergistically employed subwavelength optical properties of localized surface plasmon resonance (LSPR) supported by nanoparticles (NPs) and propagating surface plasmon polaritons assisted by metal thin films for diagnostic and point-of-care analysis. Gold nanoparticles (AuNPs) significantly quench the molecular emission from fluorescent molecules (at close distances <5 nm). More often, complex strategies are employed for providing a spacer layer around the AuNPs to avoid direct contact with fluorescent molecules, thereby preventing quenching. In this study we demonstrate a rapid and facile strategy with the use of Au-decorated SiO2 NPs (AuSil), a metal (Au)-dielectric (SiO2) hybrid material for dequenching the otherwise quenched fluorescence emission from radiating dipoles and to realize 88-fold enhancement using the SPCE platform. Different loading of AuNPs were studied to tailor fluorescence emission enhancements in spacer, cavity, and extended (ext.) cavity nanointerfaces. We also present femtomolar detection of spermidine using this nanohybrid in a highly desirable ext. cavity interface. This interface serves as an efficient coupling configuration with dual benefits of spacer and cavity architectures that has been widely explored hitherto. The multifold hot-spots rendered by the AuSil nanohybrids assist in augmented electromagnetic (EM)-field intensity that can be captured using a smartphone-based SPCE platform presenting excellent reliability and reproducibility in spermidine detection.
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Affiliation(s)
- Seemesh Bhaskar
- STAR Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, Anantapur, Andhra Pradesh India, 515134
| | - N Charan S S Kowshik
- STAR Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, Anantapur, Andhra Pradesh India, 515134
| | - S Prathap Chandran
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, Anantapur, Andhra Pradesh India, 515134
| | - Sai Sathish Ramamurthy
- STAR Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, Anantapur, Andhra Pradesh India, 515134
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Bastami TR, Khaknahad S, Malekshahi M. Sonochemical versus reverse-precipitation synthesis of Cu xO/Fe 2O 3/MoC nano-hybrid: removal of reactive dyes and evaluation of smartphone for colorimetric detection of organic dyes in water media. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:9364-9381. [PMID: 31916163 DOI: 10.1007/s11356-019-07368-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
In the present work, an ultrasound-assisted reverse-precipitation method was applied as a new approach for the synthesis of CuxO/Fe2O3/MoC. In the sonication method, a bath type sonicator as a simple, cost-effective, and low intensity sonicator was used. To determine the influence of ultrasonic waves on the morphology and application of nano-hybrid as nano-sorbent, it was also synthesized using the reverse precipitation method. The products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared (FTIR), transmission electron microscopy (TEM), Zeta-potential measurement, and vibrating sample magnetometer (VSM) techniques. The XRD analysis confirmed that the sono-synthesized sample has higher crystallinity than the conventional one and CuO/Cu2O/MoC/Fe2O3 phase was obtained under ultrasound. According to the TEM and FESEM, sono-synthesized nanoparticles were rod-like with a width and length of 3 nm and 40 nm, respectively. Also, a well-dispersed shape and uniform morphology of nanoparticles were obtained using sonication. In comparison with the conventional nano-hybrid, this structure results in more void and accessible sites for adsorption of pollutants. The efficiency of resulting nanoparticles in adsorption of reactive dyes as a model of the pollutant was evaluated by sorption and sono-sorption processes. The sono-synthesized sample removed the pollutants more efficient than the conventional sample. The removal efficiencies were about 99% for the removal of reactive dyes using the sono-synthesized sample and sono-sorption method. Besides, determining factors including pH, pollutant concentration, temperature, and contact time were optimized in the sono-sorption and sorption processes. A colorimetric method based on RGB value was used to determine dye concentration in aqueous media. The images were taken by a smartphone and analyzed by ImageJ software. The accuracy of RGB results was confirmed by a UV-Vis spectrophotometer. Graphical abstract The figures on the left side show the FESEM images of nano-sorbent synthesized in the presence of ultrasonic irradiation (US method) and the absence of it (MS method). A well-dispersed shape and uniform morphology of nanoparticles were obtained using sonication. The scheme on the right side illustrates the process of sono-sorption for the removal of dyes and determination of their concentration using the colorimetric method. A colorimetric method based on RGB value was used to determine dye concentration in aqueous media. The graph shows the removal efficiencies of RY84 onto nanosorbent. The removal efficiencies were about 99% for the removal of reactive dye using the sono-synthesized sample and sono-sorption method.
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Affiliation(s)
- Tahereh Rohani Bastami
- Chemical Engineering, Faculty of Engineering, Quchan University of Technology, Quchan, 94771-67335, Iran.
| | - Sina Khaknahad
- Chemical Engineering, Faculty of Engineering, Quchan University of Technology, Quchan, 94771-67335, Iran
| | - Mehrdad Malekshahi
- Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, 91779-48974, Iran
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Wakchaure VC, Das T, Babu SS. Boron-Conjugated Pyrenes as Fluorescence-Based Molecular Probes and Security Markers. Chempluschem 2020; 84:1253-1256. [PMID: 31944035 DOI: 10.1002/cplu.201900280] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/19/2019] [Indexed: 11/09/2022]
Abstract
Boron-embedded aromatic hydrocarbons are a class of molecules known for their distinct electronic and/or optoelectronic properties and are thus suitable for many potential applications. Among those, boronic ester and acid containing molecules have been widely used for sensing and molecular recognition applications, respectively. We compared the sensing and molecular recognition properties of two boron-containing pyrene derivatives for fluoride and glucose sensing applications. The presence of four boronate ester groups enabled fluoride ion sensing at the μM level. The boronic acid derivative is very selective towards glucose compared to other saccharides. Furthermore, we used the mechano-responsive fluorescence changes and self-assembly of these derivatives, respectively, for fluorescence-based inkless and ink (water)-based writing in invisible security labeling applications.
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Affiliation(s)
- Vivek Chandrakant Wakchaure
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-, 411 008, India.,Academy of Scientific, Innovative Research (AcSIR), Ghaziabad-, 201 002, India
| | - Tamal Das
- Academy of Scientific, Innovative Research (AcSIR), Ghaziabad-, 201 002, India.,Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road,, Pune-, 411 008, India
| | - Sukumaran Santhosh Babu
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-, 411 008, India.,Academy of Scientific, Innovative Research (AcSIR), Ghaziabad-, 201 002, India
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