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Barbee B, Muchharla B, Adedeji A, Karoui A, Kumar Sadasivuni K, Sha MS, Abdullah AM, Slaughter G, Kumar B. Cu and Ni Co-sputtered heteroatomic thin film for enhanced nonenzymatic glucose detection. Sci Rep 2022; 12:7507. [PMID: 35525846 PMCID: PMC9079054 DOI: 10.1038/s41598-022-11563-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 04/26/2022] [Indexed: 11/30/2022] Open
Abstract
In this work, we report a wafer-scale and chemical-free fabrication of nickel (Ni) and copper (Cu) heteroatomic Cu–Ni thin films using RF magnetron sputtering technique for non-enzymatic glucose sensing application. The as-prepared wafer-scale Cu–Ni thin films exhibits excellent electrocatalytic activity toward glucose oxidation with a 1.86 μM detection limit in the range of 0.01 mM to 20 mM range. The Cu–Ni film shows 1.3- and 5.4-times higher glucose oxidation activity in comparison to the Cu and Ni electrodes, respectively. The improved electrocatalytic activity is attributed to the synergistic effect of the bimetallic catalyst and high density of grain boundaries. The Cu–Ni electrodes also possessed excellent anti-interference characteristics. These results indicate that Cu–Ni heteroatomic thin film can be a potential candidate for the development of non-enzymatic glucose biosensor because of its chemical free synthesis, excellent reproducibility, reusability, and long-term stability.
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Affiliation(s)
- Brianna Barbee
- Department of Mathematics, Computer Science and Engineering Technology, Elizabeth City State University, Elizabeth City, NC, 27909, USA
| | - Baleeswaraiah Muchharla
- Department of Mathematics, Computer Science and Engineering Technology, Elizabeth City State University, Elizabeth City, NC, 27909, USA
| | - Adetayo Adedeji
- Department of Natural Sciences, Elizabeth City State University, Elizabeth City, NC, 27909, USA
| | - Abdennaceur Karoui
- Center for Research Excellence in Science and Technology (CREST), Department of Mathematics and Physics, North Carolina Central University, Durham, NC, 27707, USA
| | | | - Mizaj Shabil Sha
- Center for Advanced Materials, Qatar University, 2713, Doha, Qatar
| | | | - Gymama Slaughter
- Center for Bioelectronics, Old Dominion University, 4211 Monarch Way, Norfolk, VA, 23508, USA
| | - Bijandra Kumar
- Department of Mathematics, Computer Science and Engineering Technology, Elizabeth City State University, Elizabeth City, NC, 27909, USA.
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2
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Microwave Planar Resonant Solutions for Glucose Concentration Sensing: A Systematic Review. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11157018] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The measurement of glucose concentration finds interesting potential applications in both industry and biomedical contexts. Among the proposed solutions, the use of microwave planar resonant sensors has led to remarkable scientific activity during the last years. These sensors rely on the changes in the dielectric properties of the medium due to variations in the glucose concentration. These devices show electrical responses dependent on the surrounding dielectric properties, and therefore the changes in their response can be related to variations in the glucose content. This work shows an up-to-date review of this sensing approach after more than one decade of research and development. The attempts involved are sorted by the sensing parameter, and the computation of a common relative sensitivity to glucose is proposed as general comparison tool. The manuscript also discusses the key points of each sensor category and the possible future lines and challenges of the sensing approach.
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3
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Roberts S, Khera E, Choi C, Navaratna T, Grimm J, Thurber GM, Reiner T. Optoacoustic Imaging of Glucagon-like Peptide-1 Receptor with a Near-Infrared Exendin-4 Analog. J Nucl Med 2021; 62:839-848. [PMID: 33097631 PMCID: PMC8729860 DOI: 10.2967/jnumed.120.252262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 09/18/2020] [Indexed: 11/16/2022] Open
Abstract
Limitations in current imaging tools have long challenged the imaging of small pancreatic islets in animal models. Here, we report the first development and in vivo validation testing of a broad-spectrum and high-absorbance near-infrared optoacoustic contrast agent, E4x12-Cy7. Our near-infrared tracer is based on the amino acid sequence of exendin-4 and targets the glucagon-like peptide-1 receptor (GLP-1R). Cell assays confirmed that E4x12-Cy7 has a high-binding affinity (dissociation constant, Kd, 4.6 ± 0.8 nM). Using the multispectral optoacoustic tomography, we imaged E4x12-Cy7 and optoacoustically visualized β-cell insulinoma xenografts in vivo for the first time. In the future, similar optoacoustic tracers that are specific for β-cells and combines optoacoustic and fluorescence imaging modalities could prove to be important tools for monitoring the pancreas for the progression of diabetes.
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Affiliation(s)
- Sheryl Roberts
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Eshita Khera
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Crystal Choi
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Tejas Navaratna
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Jan Grimm
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
- Program of Molecular Pharmacology, Memorial Sloan Kettering Cancer Center, New York, New York
- Department of Radiology, Weill Cornell Medical College, New York, New York
- Pharmacology Program, Weill Cornell Medical College, New York, New York
| | - Greg M Thurber
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan; and
| | - Thomas Reiner
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
- Department of Radiology, Weill Cornell Medical College, New York, New York
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York
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4
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Xu C, Rassel S, Zhang S, Aloraynan A, Ban D. Single-wavelength water muted photoacoustic system for detecting physiological concentrations of endogenous molecules. BIOMEDICAL OPTICS EXPRESS 2021; 12:666-675. [PMID: 33659094 PMCID: PMC7899505 DOI: 10.1364/boe.413086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/27/2020] [Accepted: 11/29/2020] [Indexed: 05/02/2023]
Abstract
Based on the breakthrough technology of water muting on photoacoustic spectroscopy, a single wavelength photoacoustic system in the short-wavelength-infrared (SWIR) region was developed to sense the endogenous molecules (e.g. glucose, lactate, triglyceride, and serum albumin found in blood and interstitial fluid) in aqueous media. The system implemented a robust photoacoustic resonant cell that can significantly enhance the signal-to-noise ratio of the acoustic waves. The sensitivity of the system was explored, and the experimental results exhibit a precision detection of physiological concentrations of biomolecules by combining the techniques of water muting and photoacoustic resonant amplification in a portable and low-cost single wavelength laser system.
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Affiliation(s)
- Chao Xu
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
| | - Shazzad Rassel
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
| | - Steven Zhang
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
| | - Abdulrahman Aloraynan
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
| | - Dayan Ban
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada
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5
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Zharkikh E, Dremin V, Zherebtsov E, Dunaev A, Meglinski I. Biophotonics methods for functional monitoring of complications of diabetes mellitus. JOURNAL OF BIOPHOTONICS 2020; 13:e202000203. [PMID: 32654427 DOI: 10.1002/jbio.202000203] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/02/2020] [Accepted: 07/04/2020] [Indexed: 06/11/2023]
Abstract
The prevalence of diabetes complications is a significant public health problem with a considerable economic cost. Thus, the timely diagnosis of complications and prevention of their development will contribute to increasing the length and quality of patient life, and reducing the economic costs of their treatment. This article aims to review the current state-of-the-art biophotonics technologies used to identify the complications of diabetes mellitus and assess the quality of their treatment. Additionally, these technologies assess the structural and functional properties of biological tissues, and they include capillaroscopy, laser Doppler flowmetry and hyperspectral imaging, laser speckle contrast imaging, diffuse reflectance spectroscopy and imaging, fluorescence spectroscopy and imaging, optical coherence tomography, optoacoustic imaging and confocal microscopy. Recent advances in the field of optical noninvasive diagnosis suggest a wider introduction of biophotonics technologies into clinical practice and, in particular, in diabetes care units.
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Affiliation(s)
- Elena Zharkikh
- Research & Development Center of Biomedical Photonics, Orel State University, Orel, Russia
| | - Viktor Dremin
- Research & Development Center of Biomedical Photonics, Orel State University, Orel, Russia
- School of Engineering and Applied Science, Aston University, Birmingham, UK
| | - Evgeny Zherebtsov
- Research & Development Center of Biomedical Photonics, Orel State University, Orel, Russia
- Optoelectronics and Measurement Techniques unit, University of Oulu, Oulu, Finland
| | - Andrey Dunaev
- Research & Development Center of Biomedical Photonics, Orel State University, Orel, Russia
| | - Igor Meglinski
- School of Engineering and Applied Science, Aston University, Birmingham, UK
- Optoelectronics and Measurement Techniques unit, University of Oulu, Oulu, Finland
- Interdisciplinary Laboratory of Biophotonics, National Research Tomsk State University, Tomsk, Russia
- Institute of Engineering Physics for Biomedicine (PhysBio), National Research Nuclear University-MEPhI, Moscow, Russia
- School of Life and Health Sciences, Aston University, Birmingham, UK
- Department of Histology, Cytology and Embryology, Institute of Clinical Medicine N.V. Sklifosovsky, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
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6
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Friedlein JT, Baumann E, Briggman KA, Colacion GM, Giorgetta FR, Goldfain AM, Herman DI, Hoenig EV, Hwang J, Newbury NR, Perez EF, Yung CS, Coddington I, Cossel KC. Dual-comb photoacoustic spectroscopy. Nat Commun 2020; 11:3152. [PMID: 32561738 PMCID: PMC7305174 DOI: 10.1038/s41467-020-16917-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 05/29/2020] [Indexed: 02/07/2023] Open
Abstract
Spectrally resolved photoacoustic imaging is promising for label-free imaging in optically scattering materials. However, this technique often requires acquisition of a separate image at each wavelength of interest. This reduces imaging speeds and causes errors if the sample changes in time between images acquired at different wavelengths. We demonstrate a solution to this problem by using dual-comb spectroscopy for photoacoustic measurements. This approach enables a photoacoustic measurement at thousands of wavelengths simultaneously. In this technique, two optical-frequency combs are interfered on a sample and the resulting pressure wave is measured with an ultrasound transducer. This acoustic signal is processed in the frequency-domain to obtain an optical absorption spectrum. For a proof-of-concept demonstration, we measure photoacoustic signals from polymer films. The absorption spectra obtained from these measurements agree with those measured using a spectrophotometer. Improving the signal-to-noise ratio of the dual-comb photoacoustic spectrometer could enable high-speed spectrally resolved photoacoustic imaging.
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Affiliation(s)
- Jacob T Friedlein
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
| | - Esther Baumann
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
- Department of Physics, University of Colorado, Boulder, CO, 80309, USA
| | - Kimberly A Briggman
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
| | - Gabriel M Colacion
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
- Department of Physics, University of Colorado, Boulder, CO, 80309, USA
- Optical Science and Engineering, University of New Mexico, 1313 Goddard, SE, Albuquerque, NM, 87106, USA
| | - Fabrizio R Giorgetta
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
- Department of Physics, University of Colorado, Boulder, CO, 80309, USA
| | - Aaron M Goldfain
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
| | - Daniel I Herman
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
- Department of Physics, University of Colorado, Boulder, CO, 80309, USA
| | - Eli V Hoenig
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
- Department of Physics, University of Colorado, Boulder, CO, 80309, USA
- Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, ERC 387, Chicago, IL, 60637, USA
| | - Jeeseong Hwang
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
| | - Nathan R Newbury
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
| | - Edgar F Perez
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
- Department of Physics, University of Colorado, Boulder, CO, 80309, USA
- Institute for Research in Electronics and Applied Physics, University of Maryland, 8279 Paint Branch Drive, College Park, MD, 20742-3511, USA
| | - Christopher S Yung
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
| | - Ian Coddington
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA
| | - Kevin C Cossel
- National Institute of Standards and Technology, Applied Physics Division, 325 Broadway, Boulder, CO, 80305, USA.
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7
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Shan T, Zhao Y, Jiang S, Jiang H. In-vivo hemodynamic imaging of acute prenatal ethanol exposure in fetal brain by photoacoustic tomography. JOURNAL OF BIOPHOTONICS 2020; 13:e201960161. [PMID: 31994834 DOI: 10.1002/jbio.201960161] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 01/18/2020] [Accepted: 01/23/2020] [Indexed: 05/25/2023]
Abstract
Prenatal ethanol exposure (PEE) can lead to structural and functional abnormalities in fetal brain. Although neural developmental deficits due to PEE have been recognized, the immediate effects of PEE on fetal brain vasculature and hemodynamics remain poorly understood. One of the major obstacles that preclude the rapid advancement of studies on fetal vascular dynamics is the limitation of the imaging techniques. Thus, a technique for noninvasive in-vivo imaging of fetal vasculature and hemodynamics is desirable. In this study, we explored the dynamic changes of the vessel dimeter, density and oxygen saturation in fetal brain after acute maternal ethanol exposure in the second-trimester equivalent murine model using a real-time photoacoustic tomography system we developed for imaging embryo of small animals. The results indicate a significant decrease in fetal brain vessel diameter, perfusion and oxygen saturation. This work demonstrated that PAT can provide high-resolution noninvasive imaging ability to monitor fetal vascular dynamics.
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Affiliation(s)
- Tianqi Shan
- Department of Biomedical Engineering, University of Florida, Gainesville, Florida
| | - Yuan Zhao
- School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu, China
| | - Shixie Jiang
- Department of Psychiatry and Behavioral Neurosciences, University of South Florida, Tampa, Florida
| | - Huabei Jiang
- Department of Medical Engineering, University of South Florida, Tampa, Florida
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8
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Avari P, Reddy M, Oliver N. Is it possible to constantly and accurately monitor blood sugar levels, in people with Type 1 diabetes, with a discrete device (non-invasive or invasive)? Diabet Med 2020; 37:532-544. [PMID: 30803028 DOI: 10.1111/dme.13942] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/22/2019] [Indexed: 12/15/2022]
Abstract
Real-time continuous glucose monitors using subcutaneous needle-type sensors continue to develop. The limitations of currently available systems, however, include time lag behind changes in blood glucose, the invasive nature of such systems, and in some cases, their accuracy. Non-invasive techniques have been developed, but, to date, no commercial device has been successful. A key research priority for people with Type 1 diabetes identified by the James Lind Alliance was to identify ways of monitoring blood glucose constantly and accurately using a discrete device, invasive or non-invasive. Integration of such a sensor is important in the development of a closed-loop system and the technology must be rapid, selective and acceptable for continuous use by individuals. The present review provides an update on existing continuous glucose-sensing technologies, and an overview of emergent techniques, including their accuracy and limitations.
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Affiliation(s)
- P Avari
- Division of Diabetes, Endocrinology and Metabolism, Faculty of Medicine, Imperial College, London, UK
| | - M Reddy
- Division of Diabetes, Endocrinology and Metabolism, Faculty of Medicine, Imperial College, London, UK
| | - N Oliver
- Division of Diabetes, Endocrinology and Metabolism, Faculty of Medicine, Imperial College, London, UK
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9
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Shokrekhodaei M, Quinones S. Review of Non-invasive Glucose Sensing Techniques: Optical, Electrical and Breath Acetone. SENSORS (BASEL, SWITZERLAND) 2020; 20:E1251. [PMID: 32106464 PMCID: PMC7085605 DOI: 10.3390/s20051251] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 02/22/2020] [Accepted: 02/23/2020] [Indexed: 12/12/2022]
Abstract
Annual deaths in the U.S. attributed to diabetes are expected to increase from 280,210 in 2015 to 385,840 in 2030. The increase in the number of people affected by diabetes has made it one of the major public health challenges around the world. Better management of diabetes has the potential to decrease yearly medical costs and deaths associated with the disease. Non-invasive methods are in high demand to take the place of the traditional finger prick method as they can facilitate continuous glucose monitoring. Research groups have been trying for decades to develop functional commercial non-invasive glucose measurement devices. The challenges associated with non-invasive glucose monitoring are the many factors that contribute to inaccurate readings. We identify and address the experimental and physiological challenges and provide recommendations to pave the way for a systematic pathway to a solution. We have reviewed and categorized non-invasive glucose measurement methods based on: (1) the intrinsic properties of glucose, (2) blood/tissue properties and (3) breath acetone analysis. This approach highlights potential critical commonalities among the challenges that act as barriers to future progress. The focus here is on the pertinent physiological aspects, remaining challenges, recent advancements and the sensors that have reached acceptable clinical accuracy.
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Affiliation(s)
- Maryamsadat Shokrekhodaei
- Department of Electrical and Computer Engineering, The University of Texas at El Paso, El Paso, TX 79968, USA
| | - Stella Quinones
- Department of Metallurgical, Materials and Biomedical Engineering, The University of Texas at El Paso, El Paso, TX 79968, USA;
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10
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Prakash J, Seyedebrahimi MM, Ghazaryan A, Malekzadeh-Najafabadi J, Gujrati V, Ntziachristos V. Short-wavelength optoacoustic spectroscopy based on water muting. Proc Natl Acad Sci U S A 2020; 117:4007-4014. [PMID: 32029585 PMCID: PMC7049157 DOI: 10.1073/pnas.1910597117] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Infrared (IR) optoacoustic spectroscopy can separate a multitude of molecules based on their absorption spectra. However, the technique is limited when measuring target molecules in aqueous solution by strong water absorption at IR wavelengths, which reduces detection sensitivity. Based on the dependence of optoacoustic signal on the temperature of the probed medium, we introduce cooled IR optoacoustic spectroscopy (CIROAS) to mute water contributions in optoacoustic spectroscopy. We showcase that spectral measurements of proteins, lipids, and glucose in the short-wavelength IR region, performed at 4 °C, lead to marked sensitivity improvements over conventional optoacoustic or IR spectroscopy. We elaborate on the dependence of optoacoustic signals on water temperature and demonstrate polarity changes in the recorded signal at temperatures below 4 °C. We further elucidate the dependence of the optoacoustic signal and the muting temperature on sample concentration and demonstrate that changes in these dependences enable quantification of the solute concentration. We discuss how CIROAS may enhance abilities for molecular sensing in the IR.
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Affiliation(s)
- Jaya Prakash
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, D-85764 Neuherberg, Germany
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560 012, India
| | - Mir Mehdi Seyedebrahimi
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, D-85764 Neuherberg, Germany
| | - Ara Ghazaryan
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, D-85764 Neuherberg, Germany
| | | | - Vipul Gujrati
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, D-85764 Neuherberg, Germany
| | - Vasilis Ntziachristos
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, D-85764 Neuherberg, Germany;
- Chair of Biological Imaging and TranslaTUM, Technical University of Munich, D-81675 Munich, Germany
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11
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Garcia H, Juan CG, Avila-Navarro E, Bronchalo E, Sabater-Navarro JM. Portable Device Based on Microwave Resonator for Noninvasive Blood Glucose Monitoring. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2019:1115-1118. [PMID: 31946089 DOI: 10.1109/embc.2019.8856934] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A portable device for noninvasive blood glucose monitoring is presented. The device is based on a microwave open-loop microstrip resonator, acting as glucose sensor, following the results of a previous study. This work shows the design and development of the driving electronics, signal generation system, data processing, measurement setup and graphical user interface, to integrate the resonator into a device suitable for further experimentation in clinical scenarios. The measurement principle relies in the idea of relating the unloaded Q factor to the user's blood glucose level. An initial assessment is shown, whose results highlight some successful cases of blood glucose level tracking, and indicate the need for further research in clinical scenarios.
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12
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Yáñez E, Cywiak M, Franco S JM, Cywiak D. Gaussian beam with high spherical aberration focused by a singlet lens-shaped container for glucose measurements. APPLIED OPTICS 2019; 58:8495-8500. [PMID: 31873334 DOI: 10.1364/ao.58.008495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
We describe a highly sensitive optical technique for glucose concentration measurements in liquid samples based on measuring the heights of the primary sidelobes of the normalized intensity profiles of a focused Gaussian beam with high spherical aberration. A singlet lens-shaped container, filled with the sample under test, is used to focus the beam at an observation plane placed close to the focusing region. The normalized intensity profile of the aberrated beam allows for accurate measurement of the sample glucose concentration.
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13
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Juan CG, García H, Ávila-Navarro E, Bronchalo E, Galiano V, Moreno Ó, Orozco D, Sabater-Navarro JM. Feasibility study of portable microwave microstrip open-loop resonator for non-invasive blood glucose level sensing: proof of concept. Med Biol Eng Comput 2019; 57:2389-2405. [PMID: 31473945 DOI: 10.1007/s11517-019-02030-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 08/10/2019] [Indexed: 01/05/2023]
Abstract
Self-management of blood glucose level is part and parcel of diabetes treatment, which involves invasive, painful, and uncomfortable methods. A proper non-invasive blood glucose monitor (NIBGM) is therefore desirable to deal better with it. Microwave resonators can potentially be used for such a purpose. Following the positive results from an in vitro previous work, a portable device based upon a microwave resonator was developed and assessed in a multicenter proof of concept. Its electrical response was analyzed when an individual's tongue was placed onto it. The study was performed with 352 individuals during their oral glucose tolerance tests, having four measurements per individual. The findings revealed that the accuracy must be improved before the diabetes community can make real use of the device. However, the relationship between the measuring parameter and the individual's blood glucose level is coherent with that from previous works, although with higher data dispersion. This is reflected in correlation coefficients between glycemia and the measuring magnitude consistently negative, although small, for the different datasets analyzed. Further research is proposed, focused on system improvements, individual calibration, and multitechnology approach. The study of the influence of other blood components different to glucose is also advised. Graphical abstract.
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Affiliation(s)
- Carlos G Juan
- Department of Systems Engineering and Automation, Miguel Hernández University, Elche, Spain
| | - Héctor García
- Department of Materials Science, Optics and Electronic Technology, Miguel Hernández University, Elche, Spain
| | - Ernesto Ávila-Navarro
- Department of Materials Science, Optics and Electronic Technology, Miguel Hernández University, Elche, Spain
| | - Enrique Bronchalo
- Department of Communications Engineering, Miguel Hernández University, Elche, Spain
| | - Vicente Galiano
- Department of Computer Engineering, Miguel Hernández University, Elche, Spain
| | - Óscar Moreno
- Department of Clinical Medicine, Miguel Hernández University, Elche, Spain
| | - Domingo Orozco
- Department of Clinical Medicine, Miguel Hernández University, Elche, Spain
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14
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Glucose Concentration Measurement in Human Blood Plasma Solutions with Microwave Sensors. SENSORS 2019; 19:s19173779. [PMID: 31480415 PMCID: PMC6749577 DOI: 10.3390/s19173779] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/27/2019] [Accepted: 08/28/2019] [Indexed: 12/29/2022]
Abstract
Three microwave sensors are used to track the glucose level of different human blood plasma solutions. In this paper, the sensors are evaluated as glucose trackers in a context close to real human blood. Different plasma solutions sets were prepared from a human blood sample at several added glucose concentrations up to 10 wt%, adding also ascorbic acid and lactic acid at different concentrations. The experimental results for the different sensors/solutions combinations are presented in this work. The sensors show good performance and linearity as glucose level retrievers, although the sensitivities change as the rest of components vary. Different sensor behaviors depending upon the concentrations of glucose and other components are identified and characterized. The results obtained in terms of sensitivity are coherent with previous works, highlighting the contribution of glucose to the dielectric losses of the solution. The results are also consistent with the frequency evolution of the electromagnetic signature of glucose found in the literature, and are helpful for selecting frequency bands for sensing purposes and envisioning future approaches to the challenging measurement in real biological contexts. Discussion of the implications of the results and guidelines for further research and development of more accurate sensors is offered.
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Ntziachristos V, Pleitez MA, Aime S, Brindle KM. Emerging Technologies to Image Tissue Metabolism. Cell Metab 2019; 29:518-538. [PMID: 30269982 DOI: 10.1016/j.cmet.2018.09.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 07/24/2018] [Accepted: 09/02/2018] [Indexed: 12/19/2022]
Abstract
Due to the implication of altered metabolism in a large spectrum of tissue function and disease, assessment of metabolic processes becomes essential in managing health. In this regard, imaging can play a critical role in allowing observation of biochemical and physiological processes. Nuclear imaging methods, in particular positron emission tomography, have been widely employed for imaging metabolism but are mainly limited by the use of ionizing radiation and the sensing of only one parameter at each scanning session. Observations in healthy individuals or longitudinal studies of disease could markedly benefit from non-ionizing, multi-parameter imaging methods. We therefore focus this review on progress with the non-ionizing radiation methods of MRI, hyperpolarized magnetic resonance and magnetic resonance spectroscopy, chemical exchange saturation transfer, and emerging optoacoustic (photoacoustic) imaging. We also briefly discuss the role of nuclear and optical imaging methods for research and clinical protocols.
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Affiliation(s)
- Vasilis Ntziachristos
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg 85764, Germany; Chair of Biological Imaging, TranslaTUM, Technical University of Munich, Ismaningerstr. 22, Munich 81675, Germany.
| | - Miguel A Pleitez
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg 85764, Germany; Chair of Biological Imaging, TranslaTUM, Technical University of Munich, Ismaningerstr. 22, Munich 81675, Germany
| | - Silvio Aime
- Molecular Imaging Center, Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin 10126, Italy
| | - Kevin M Brindle
- Department of Biochemistry, University of Cambridge, Old Addenbrooke's Site, Cambridge CB2 1GA, UK; Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
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