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Hourdakis E, Bardakas A, Segkos A, Tsilivaki S, Gardelis S, Tsamis C. Tunable and white light photoluminescence from ZnO on porous Si with the addition of carbon quantum dots. NANOTECHNOLOGY 2023; 34:455202. [PMID: 37536299 DOI: 10.1088/1361-6528/aced0f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/03/2023] [Indexed: 08/05/2023]
Abstract
In this work we demonstrate a two-pixel solid-state photoluminescent device able to emit white light covering the entire visible spectrum from 380 nm up to 800 nm. The device is based on a combination of porous Si, hydrothermally grown ZnO and carbon quantum dots, in a two-pixel formation, with porous Si and ZnO acting independently while the carbon quantum dots are deposited on top of the entire device. All processing is done using standard Si processing techniques. Moreover, the device design allows for tunability of the emitted spectrum simply by choosing the desired combination of the materials. Overall, the demonstrated device is low cost, environmentally safe and biocompatible.
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Affiliation(s)
- E Hourdakis
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
| | - A Bardakas
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
| | - A Segkos
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
| | - S Tsilivaki
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
- Department of Physics, National Kapodistrian University of Athens, Athens, Greece
| | - S Gardelis
- Department of Physics, National Kapodistrian University of Athens, Athens, Greece
| | - C Tsamis
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
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2
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Shymborska Y, Stetsyshyn Y, Awsiuk K, Raczkowska J, Bernasik A, Janiszewska N, Da̧bczyński P, Kostruba A, Budkowski A. Temperature- and pH-Responsive Schizophrenic Copolymer Brush Coatings with Enhanced Temperature Response in Pure Water. ACS APPLIED MATERIALS & INTERFACES 2023; 15:8676-8690. [PMID: 36734329 PMCID: PMC9940115 DOI: 10.1021/acsami.2c20395] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 01/23/2023] [Indexed: 05/27/2023]
Abstract
Novel brush coatings were fabricated with glass surface-grafted chains copolymerized using surface-initiated atom transfer radical polymerization (SI-ATRP) from 2-(2-methoxyethoxy)ethyl methacrylate (OEGMA188) and acrylamide (AAm), taken in different proportions. P(OEGMA188-co-AAm) brushes with AAm mole fraction >44% (determined with XPS and TOF-SIMS spectroscopy) and nearly constant with the depth copolymer composition (TOF-SIMS profiling) exhibit unusual temperature-induced transformations: The contact angle of water droplets on P(OEGMA188-co-AAm) coatings increases by ∼45° with temperature, compared to 17-18° for POEGMA188 and PAAm. The thickness of coatings immersed in water and the morphology of coatings imaged in air show a temperature response for POEGMA188 (using reflectance spectroscopy and AFM, respectively), but this response is weak for P(OEGMA188-co-AAm) and absent for PAAm. This suggests mechanisms more complex than a simple transition between hydrated loose coils and hydrophobic collapsed chains. For POEGMA188, the hydrogen bonds between the ether oxygens of poly(ethylene glycol) and water hydrogens are formed below the transition temperature Tc and disrupted above Tc when polymer-polymer interactions are favored. Different hydrogen bond structures of PAAm include free amide groups, cis-trans-multimers, and trans-multimers of amide groups. Here, hydrogen bonds between free amide groups and water dominate at T < Tc but structures favored at T > Tc, such as cis-trans-multimers and trans-multimers of amide groups, can still be hydrated. The enhanced temperature-dependent response of wettability for P(OEGMA188-co-AAm) with a high mole fraction of AAm suggests the formation at Tc of more hydrophobic structures, realized by hydrogen bonding between the ether oxygens of OEGMA188 and the amide fragments of AAm, where water molecules are caged. Furthermore, P(OEGMA188-co-AAm) coatings immersed in pH buffer solutions exhibit a 'schizophrenic' behavior in wettability, with transitions that mimic LCST and UCST for pH = 3, LCST for pH = 5 and 7, and any transition blocked for pH = 9.
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Affiliation(s)
- Yana Shymborska
- Smoluchowski
Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
- Lviv
Polytechnic National University, St. George’s Square 2, 79013 Lviv, Ukraine
| | - Yurij Stetsyshyn
- Smoluchowski
Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
- Lviv
Polytechnic National University, St. George’s Square 2, 79013 Lviv, Ukraine
| | - Kamil Awsiuk
- Smoluchowski
Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
| | - Joanna Raczkowska
- Smoluchowski
Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
| | - Andrzej Bernasik
- Faculty
of Physics and Applied Computer Science, AGH - University of Science and Technology, al. Mickiewicza 30, 30-049 Kraków, Poland
| | - Natalia Janiszewska
- Smoluchowski
Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
| | - Paweł Da̧bczyński
- Smoluchowski
Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
| | - Andrij Kostruba
- Faculty
of Food Technologies and Biotechnology, Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies
Lviv, Pekarska 50, 79000, Lviv, Ukraine
| | - Andrzej Budkowski
- Smoluchowski
Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
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Chiu WH, Kong WY, Chueh YH, Wen JW, Tsai CM, Hong C, Chen PY, Ko CH. Using an ultra-compact optical system to improve lateral flow immunoassay results quantitatively. Heliyon 2022; 8:e12116. [PMID: 36544820 PMCID: PMC9761723 DOI: 10.1016/j.heliyon.2022.e12116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/02/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022] Open
Abstract
The lateral flow immunoassay (LFIA) is a paper-based platform with extensive application in point-of-care (POC) testing and many fields. However, its clinical application is severely limited due to the lack of quantitative ability of standard LFIA tests; this augmentation provides the system with quantifying the signal from magenta-colored AuNPs. To address this issue, we proposed an ultra-compact optical system that allowed LFIAs to be performed more accurately and objectively. The experimental setup consisted of multiple optical accessories manufactured by 3D printing (STEP files were included). A high-resolution printer was used to print out a magenta card model for the LFIA, whose color code, ranging from 255, 255, 255 to 255, 0, 255 in the RGB (red, green, blue) format, represents different levels of magenta color intensity (from 0% to 100%) and thus the results of LFIA test strips. A mathematical model was built using a calibration curve to describe the relationship between magenta color value and reflectance spectrum. In addition, a spectrum module was integrated into the proposed system to identify and quantify LFIA results. This integration represents a pioneering step in developing portable detection techniques that facilitate quantifying LFIA results. Finally, we expect this ultra-compact optical spectroscopy system to have great potential for novel clinical applications.
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Affiliation(s)
- Wei-Huai Chiu
- Graduate Institute of Automation and Control, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Wei-Yi Kong
- Graduate Institute of Automation and Control, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Yuan-Hui Chueh
- Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | | | - Ciao-Ming Tsai
- Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | | | - Pang-Yen Chen
- Department of Emergency Medicine, Mackay Memorial Hospital, Taipei, Taiwan
- Institute of Public Health, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Nursing, Yuanpei University of Medical Technology, Hsinchu, Taiwan
| | - Cheng-Hao Ko
- Graduate Institute of Automation and Control, National Taiwan University of Science and Technology, Taipei, Taiwan
- Corresponding author.
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Development of a Point-of-Care System Based on White Light Reflectance Spectroscopy: Application in CRP Determination. BIOSENSORS-BASEL 2021; 11:bios11080268. [PMID: 34436070 PMCID: PMC8394791 DOI: 10.3390/bios11080268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 07/26/2021] [Accepted: 08/05/2021] [Indexed: 02/07/2023]
Abstract
The development of methods and miniaturized systems for fast and reliable quantitative determinations at the Point-of-Care is a top challenge and priority in diagnostics. In this work, a compact bench-top system, based on White Light Reflectance Spectroscopy, is introduced and evaluated in an application with high clinical interest, namely the determination of C-Reactive protein (CRP) in human blood samples. The system encompassed all the necessary electronic and optical components for the performance of the assay, while the dedicated software provided the sequence and duration of assay steps, the reagents flow rate, the real-time monitoring of sensor response, and data processing to deliver in short time and accurately the CPR concentration in the sample. The CRP assay included two steps, the first comprising the binding of sample CRP onto the chip immobilized capture antibody and the second the reaction of the surface immunosorbed CRP molecules with the detection antibody. The assay duration was 12 min and the dynamic range was from 0.05 to 200 μg/mL, covering both normal values and acute inflammation incidents. There was an excellent agreement between CRP values determined in human plasma samples using the developed device with those received for the same samples by a standard diagnostic laboratory method.
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Koukouvinos G, Karachaliou CE, Raptis I, Petrou P, Livaniou E, Kakabakos S. Fast and Sensitive Determination of the Fungicide Carbendazim in Fruit Juices with an Immunosensor Based on White Light Reflectance Spectroscopy. BIOSENSORS-BASEL 2021; 11:bios11050153. [PMID: 34068345 PMCID: PMC8153324 DOI: 10.3390/bios11050153] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/07/2021] [Accepted: 05/10/2021] [Indexed: 11/16/2022]
Abstract
Carbendazim is a systemic benzimidazole-type fungicide with broad-spectrum activity against fungi that undermine food products safety and quality. Despite its effectiveness, carbendazim constitutes a major environmental pollutant, being hazardous to both humans and animals. Therefore, fast and reliable determination of carbendazim levels in water, soil, and food samples is of high importance for both food industry and public health. Herein, an optical biosensor based on white light reflectance spectroscopy (WLRS) for fast and sensitive determination of carbendazim in fruit juices is presented. The transducer is a Si/SiO2 chip functionalized with a benzimidazole conjugate, and determination is based on a competitive immunoassay format. Thus, for the assay, a mixture of an in-house developed rabbit polyclonal anti-carbendazim antibody with the standards or samples is pumped over the chip, followed by biotinylated secondary antibody and streptavidin. The WLRS platform allows for real-time monitoring of biomolecular interactions carried out onto the Si/SiO2 chip by transforming the shift in the reflected interference spectrum caused by the immunoreaction to effective biomolecular adlayer thickness. The sensor is able to detect 20 ng/mL of carbendazim in fruit juices with high accuracy and precision (intra- and inter-assay CVs ≤ 6.9% and ≤9.4%, respectively) in less than 30 min, applying a simple sample treatment that alleviates any "matrix-effect" on the assay results and a 60 min preincubation step for improving assay sensitivity. Excellent analytical characteristics and short analysis time along with its small size render the proposed WLRS immunosensor ideal for future on-the-spot determination of carbendazim in food and environmental samples.
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Affiliation(s)
- Georgios Koukouvinos
- Immunoassay/Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, P.O. Box 60037, 15310 Agia Paraskevi, Greece; (G.K.); (P.P.); (S.K.)
| | - Chrysoula-Evangelia Karachaliou
- Immunopeptide Chemistry Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, P.O. Box 60037, 15310 Agia Paraskevi, Greece
- Correspondence: or (C.-E.K.); (E.L.)
| | - Ioannis Raptis
- Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research “Demokritos”, P.O. Box 60037, 15310 Agia Paraskevi, Greece;
- ThetaMetrisis S.A., Polydefkous 14, 12243 Egaleo, Greece
| | - Panagiota Petrou
- Immunoassay/Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, P.O. Box 60037, 15310 Agia Paraskevi, Greece; (G.K.); (P.P.); (S.K.)
| | - Evangelia Livaniou
- Immunopeptide Chemistry Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, P.O. Box 60037, 15310 Agia Paraskevi, Greece
- Correspondence: or (C.-E.K.); (E.L.)
| | - Sotirios Kakabakos
- Immunoassay/Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, P.O. Box 60037, 15310 Agia Paraskevi, Greece; (G.K.); (P.P.); (S.K.)
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Angelopoulou M, Tzialla K, Voulgari A, Dikeoulia M, Raptis I, Kakabakos SE, Petrou P. Rapid Detection of Salmonella typhimurium in Drinking Water by a White Light Reflectance Spectroscopy Immunosensor. SENSORS 2021; 21:s21082683. [PMID: 33920297 PMCID: PMC8069642 DOI: 10.3390/s21082683] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/01/2021] [Accepted: 04/07/2021] [Indexed: 02/01/2023]
Abstract
Biosensors represent an attractive approach for fast bacteria detection. Here, we present an optical biosensor for the detection of Salmonella typhimurium lipopolysaccharide (LPS) and Salmonella bacteria in drinking water, based on white light reflectance spectroscopy. The sensor chip consisted of a Si die with a thin SiO2 layer on top that was transformed into a biosensor through the immobilization of Salmonella LPS. The optical setup included a reflection probe with seven 200 μm fibers, a visible and near-infrared light source, and a spectrometer. The six fibers at the reflection probe circumference were coupled with the light source and illuminated the biosensor chip vertically, whereas the central fiber collected the reflected light and guided it to the spectrometer. A competitive immunoassay configuration was adopted for the analysis. Accordingly, a mixture of LPS or bacteria solution, pre-incubated for 15 min, with an anti-Salmonella LPS antibody was pumped over the chip followed by biotinylated secondary antibody and streptavidin for signal enhancement. The binding of the free anti-Salmonella antibody to chip-immobilized LPS led to a shift of the reflectance spectrum that was inversely related to the analyte concentration (LPS or bacteria) in the calibrators or samples. The total assay duration was 15 min, and the detection limits achieved were 4 ng/mL for LPS and 320 CFU/mL for bacteria. Taking into account the low detection limits, the short analysis time, and the small size of the chip and instrumentation employed, the proposed immunosensor could find wide application for bacteria detection in drinking water.
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Affiliation(s)
- Michailia Angelopoulou
- Immunoassays/Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, 15341 Aghia Paraskevi, Greece; (K.T.); (S.E.K.)
- Correspondence: (M.A.); (P.P.); Tel.: +30-2106503819 (M.A. & P.P.)
| | - Konstantina Tzialla
- Immunoassays/Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, 15341 Aghia Paraskevi, Greece; (K.T.); (S.E.K.)
| | | | - Mary Dikeoulia
- Delta Foods S.A., 14565 Agios Stefanos, Greece; (A.V.); (M.D.)
| | | | - Sotirios Elias Kakabakos
- Immunoassays/Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, 15341 Aghia Paraskevi, Greece; (K.T.); (S.E.K.)
| | - Panagiota Petrou
- Immunoassays/Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, 15341 Aghia Paraskevi, Greece; (K.T.); (S.E.K.)
- Correspondence: (M.A.); (P.P.); Tel.: +30-2106503819 (M.A. & P.P.)
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Anastasiadis V, Raptis I, Economou A, Kakabakos SE, Petrou PS. Fast Deoxynivalenol Determination in Cereals Using a White Light Reflectance Spectroscopy Immunosensor. BIOSENSORS-BASEL 2020; 10:bios10110154. [PMID: 33113758 PMCID: PMC7692517 DOI: 10.3390/bios10110154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 12/17/2022]
Abstract
Deoxynivalenol (DON) is a mycotoxin produced by certain Fusarium species and found in a high percentage of wheat and maize grains cultured worldwide. Although not so toxic as other mycotoxins, it exhibits both chronic and acute toxicity, and therefore methods for its fast and accurate on-site determination are highly desirable. In the current work, we employ an optical immunosensor based on White Light Reflectance Spectroscopy (WLRS) for the fast and sensitive immunochemical label-free determination of DON in wheat and maize samples. The assay is completed in 12 min and has a quantification limit of 2.5 ng/mL in buffer corresponding to 125 μg/kg in whole grain which is lower than the maximum allowable concentrations set by the regulatory authorities for grains intended for human consumption. Several extraction protocols have been compared, and the highest recovery (>90%) was achieved employing distilled water. In addition, identical calibration curves were received in buffer and wheat/maize extraction matrix providing the ability to analyze the grain samples using calibrators in buffer. Recoveries of DON from spiked wheat and maize grain samples ranged from 92.0(±4.0) to 105(±4.0)%. The analytical performance of the WLRS immunosensor, combined with the short analysis time and instrument portability, supports its potential for on-site determinations.
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Affiliation(s)
- Vasileios Anastasiadis
- Immunoassays-Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Safety & Energy, National Center for Scientific Research “Demokritos”, 15310 Aghia Paraskevi, Greece; (V.A.); (S.E.K.)
- Analytical Chemistry Lab, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771 Zografou, Greece;
| | - Ioannis Raptis
- Institute of Nanoscience & Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Aghia Paraskevi, Greece;
- ThetaMetrisis S.A., 12132 Athens, Greece
| | - Anastasios Economou
- Analytical Chemistry Lab, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771 Zografou, Greece;
| | - Sotirios E. Kakabakos
- Immunoassays-Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Safety & Energy, National Center for Scientific Research “Demokritos”, 15310 Aghia Paraskevi, Greece; (V.A.); (S.E.K.)
| | - Panagiota S. Petrou
- Immunoassays-Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Safety & Energy, National Center for Scientific Research “Demokritos”, 15310 Aghia Paraskevi, Greece; (V.A.); (S.E.K.)
- Correspondence: ; Tel.: +30-2106503819
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Anastasiadis V, Koukouvinos G, Petrou PS, Economou A, Dekker J, Harjanne M, Heimala P, Goustouridis D, Raptis I, Kakabakos SE. Multiplexed mycotoxins determination employing white light reflectance spectroscopy and silicon chips with silicon oxide areas of different thickness. Biosens Bioelectron 2020; 153:112035. [DOI: 10.1016/j.bios.2020.112035] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/03/2020] [Accepted: 01/16/2020] [Indexed: 02/06/2023]
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Babadi M, Mohajerani E, Ataie-Fashtami L, Zand N, Shirkavand A. Quantitative Analysis of Skin Erythema Due to Laser Hair Removal: A Diffusion Optical Spectroscopy Analysis. J Lasers Med Sci 2019; 10:97-103. [PMID: 31360377 DOI: 10.15171/jlms.2019.16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Introduction: Laser hair removal needs an accurate understanding of tissue structure and chromophores content in order to optimize the selection of laser irradiation parameters. None of the optimized laser therapy might lead to side effects in skin tissue such as severe erythema, burn, scar etc. Therefore, guidance by a noninvasive real-time diagnostic method like optical spectroscopy technique is beneficial. The purpose of this survey is to analysis the skin hemoglobin spectrum quantitatively before and after hair removal laser irradiation to minimize the side effects of the procedure. Methods: To carry out a spectroscopy study, a halogen-tungsten light source was used in the wavelength region of 400-700 nm on an ocean optic device. The measurements were made on the facial area under identical conditions. Total 19 volunteers for laser hair removal by gentle laser Candela, ranging 14- 49 years old, were included in the study. A total of 18 spectra were taken from each person, 9 spectra before hair removal as a reference and 9 subsequent spectra. Colorimetry was done for all acquired before and after spectrums using Origin software (version 8.6). Then, the erythema index derived for each spectrum. Statistical analysis of correlation and normalization in colorimetry data were done using data analysis by SPSS (version 16). Results: Spectra analysis, before and after optical reflectance spectrums in laser hair removal procedure, revealed the subpeak derivation, and concentration on special visible wavelength 510- 610 nm. We studied the changes of skin chromophores absorption. The derived erythema index [E] and colorimetry parameters a*, b*, l* were compared and correlated statistically. There was a statistically considerable direct linear correlation between a* and E while inverse linear correlation was observed for l* and E and no correlation for b* and E. Conclusion: Diffuse reflectance spectroscopy showed its potency as an accurate, noninvasive realtime as complementary method for laser treatment to detect erythema as a complication of the method, in order to optimize the parameters based on the tissue characteristics in various candidates.
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Affiliation(s)
- Mozhdeh Babadi
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
| | - Ezeddin Mohajerani
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
| | - Leila Ataie-Fashtami
- Department of Regenerative Medicine, Royan institute For Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Nasrin Zand
- Department of Medical Laser, Medical Laser Research Center, ACECR, Tehran, Iran
| | - Afshan Shirkavand
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran.,Department of Medical Laser, Medical Laser Research Center, ACECR, Tehran, Iran
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Point-of-Care Diagnostics: Recent Advances and Trends. BIOSENSORS-BASEL 2017; 7:bios7040062. [PMID: 29258285 PMCID: PMC5746785 DOI: 10.3390/bios7040062] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 12/13/2017] [Accepted: 12/14/2017] [Indexed: 01/24/2023]
Abstract
Recent years have witnessed tremendous advances in point-of-care diagnostics (POCD), which are a result of continuous developments in biosensors, microfluidic, bioanalytical platforms, assay formats, lab-on-a-chip technologies, and complementary technologies. This special issue targets the critical advances in POCD and provides guided insights and directions for future research.
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