1
|
Abdelbaset R, Shawky SM, Abdullah MAA, Morsy OE, Yahia YA, Ghallab YH, Matboli M, Ismail Y. A new label free spiral sensor using impedance spectroscopy to characterize hepatocellular carcinoma in tissue and serum samples. Sci Rep 2024; 14:13155. [PMID: 38849386 PMCID: PMC11161506 DOI: 10.1038/s41598-024-63141-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 05/24/2024] [Indexed: 06/09/2024] Open
Abstract
Hepatocellular carcinoma (HCC) stands as the most prevalent form of primary liver cancer, predominantly affecting patients with chronic liver diseases such as hepatitis B or C-induced cirrhosis. Diagnosis typically involves blood tests (assessing liver functions and HCC biomarkers), imaging procedures such as Computed Tomography (CT) and Magnetic Resonance Imaging (MRI), and liver biopsies requiring the removal of liver tissue for laboratory analysis. However, these diagnostic methods either entail lengthy lab processes, require expensive imaging equipment, or involve invasive techniques like liver biopsies. Hence, there exists a crucial need for rapid, cost-effective, and noninvasive techniques to characterize HCC, whether in serum or tissue samples. In this study, we developed a spiral sensor implemented on a printed circuit board (PCB) technology that utilizes impedance spectroscopy and applied it to 24 tissues and sera samples as proof of concept. This newly devised circuit has successfully characterized HCC and normal tissue and serum samples. Utilizing the distinct dielectric properties between HCC cells and serum samples versus the normal samples across a specific frequency range, the differentiation between normal and HCC samples is achieved. Moreover, the sensor effectively characterizes two HCC grades and distinguishes cirrhotic/non-cirrhotic samples from tissue specimens. In addition, the sensor distinguishes cirrhotic/non-cirrhotic samples from serum specimens. This pioneering study introduces Electrical Impedance Spectroscopy (EIS) spiral sensor for diagnosing HCC and liver cirrhosis in clinical serum-an innovative, low-cost, rapid (< 2 min), and precise PCB-based technology without elaborate sample preparation, offering a novel non-labeled screening approach for disease staging and liver conditions.
Collapse
Affiliation(s)
- Reda Abdelbaset
- Biomedical Engineering Department, Helwan University, Cairo, 11795, Egypt
- Centre of Nanoelectronics and Devices (CND), The American University in Cairo (AUC), New Cairo, 11835, Egypt
- Centre of Nanoelectronics and Devices (CND), Zewail City of Science and Technology, Giza, 12588, Egypt
| | - Sherif M Shawky
- Biochemistry Department, Faculty of Pharmacy, Misr University for Science and Technology, Giza, 12566, Egypt
- Center of Genomics, Helmy Institute, Zewail City of Science and Technology, Giza, 12588, Egypt
| | - Mohammed A A Abdullah
- Centre of Nanoelectronics and Devices (CND), The American University in Cairo (AUC), New Cairo, 11835, Egypt.
- Centre of Nanoelectronics and Devices (CND), Zewail City of Science and Technology, Giza, 12588, Egypt.
| | - Omar E Morsy
- Centre of Nanoelectronics and Devices (CND), The American University in Cairo (AUC), New Cairo, 11835, Egypt
- Centre of Nanoelectronics and Devices (CND), Zewail City of Science and Technology, Giza, 12588, Egypt
| | - Yahia A Yahia
- Biochemistry Department, Faculty of Pharmacy, Misr University for Science and Technology, Giza, 12566, Egypt
| | - Yehya H Ghallab
- Biomedical Engineering Department, Helwan University, Cairo, 11795, Egypt
- Centre of Nanoelectronics and Devices (CND), The American University in Cairo (AUC), New Cairo, 11835, Egypt
- Centre of Nanoelectronics and Devices (CND), Zewail City of Science and Technology, Giza, 12588, Egypt
| | - Marwa Matboli
- Biochemistry and Molecular Biology Department, Faculty of Medicine, Ain Shams University, Cairo, 11591, Egypt
| | - Yehea Ismail
- Centre of Nanoelectronics and Devices (CND), The American University in Cairo (AUC), New Cairo, 11835, Egypt
- Centre of Nanoelectronics and Devices (CND), Zewail City of Science and Technology, Giza, 12588, Egypt
| |
Collapse
|
2
|
Eslaminejad T, Nematollahi-Mahani SN, Sargazi ML, Ansari M, Mirzaie V. Evaluating the effects of curcumin nano-chitosan on miR-221 and miR-222 expression and Wnt/β-catenin pathways in MCF-7, MDA-MB-231 and SKBR3 cell lines. Diagn Pathol 2024; 19:35. [PMID: 38365810 PMCID: PMC10870642 DOI: 10.1186/s13000-024-01468-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 02/12/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND Breast cancer is one of the most common diseases worldwide that affects women of reproductive age. miR-221 and miR-222 are two highly homogeneous microRNAs that play pivotal roles in many cellular processes and regulate the Wnt/β-catenin signaling pathway. Curcumin (CUR), a yellow polyphenolic compound, targets numerous signaling pathways relevant to cancer therapy. The main aim of this study was to compare the ability of chitosan curcumin nanoparticle (CC-CUR) formulation with the curcumin in modulating miR-221 and miR-222 expression through Wnt/β-catenin signaling pathway in MCF-7, MDA-MB-231 and SK-BR-3 breast cancer cell lines. METHOD Chitosan-cyclodextrin-tripolyphosphate containing curcumin nanoparticles (CC-CUR) were prepared. Cytotoxicity of the CUR and CC-CUR was evaluated. Experimental groups including CC-CUR, CUR and negative control were designed. The expression of miR-221 and miR-222 and Wnt/β-catenin pathway genes was measured. RESULTS The level of miR-221 and miR-222 and β-catenin genes decreased in MCF-7 and MDA-MB-231 cells and WIF1 gene increased in all cells in CC-CUR group. However, the results in SK-BR-3 cell line were unexpected; since miRs and WIF1 gene expressions were increased following CC-CUR administration and β-catenin decreased by administration of CUR. CONCLUSION Although the composite form of curcumin decreased the expression of miR-221 and miR-222 in MCF-7 and MDA cells, with significant decreasing of β-catenin and increasing of WIF1 gene in almost all three cell lines, we can conclude than this formulation exerts its effect mainly through the Wnt/β-catenin pathway. These preliminary findings may pave the way for the use of curcumin nanoparticles in the treatment of some known cancers.
Collapse
Affiliation(s)
- Touba Eslaminejad
- Department of Anatomy, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Marzieh Lotfian Sargazi
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Mehdi Ansari
- Departments of Drug and Food Control, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Vida Mirzaie
- Department of Anatomy, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.
| |
Collapse
|
3
|
Cervantes A, Paez G, Balleza-Ordaz JM, Vargas-Luna FM, Kashina S. Electrical bioimpedance analysis and comparison in biological tissues through crystalloid solutions implementation. Biosens Bioelectron 2024; 246:115874. [PMID: 38039732 DOI: 10.1016/j.bios.2023.115874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/03/2023]
Abstract
Electrical bioimpedance is a non-invasive and radiation-free technique that was proposed to be used in different clinical areas, however, its practical use is limited due to its low capacity to discriminate between tissues. In order to overcome this limitation, our research group proposes to incorporate the contrast media into the electrical bioimpedance procedure. The main objective of the present study was to assess the crystalloid solutions as a possible contrast media to discriminate between different tissue types in the bioimpedance technique. Two medical-grade crystalloid solutions (Hartmann and NaCl 0.9%) were injected into three biological ex vivo models: kidney, liver, and brain. BIOPAC system was used to acquire bioimpedance data before and after the injections. The data was adjusted to the Debye electrical model. The analysis of measured values showed substantial bioimpedance disparities in tissues subjected to isotonic solutions. The NaCl solution exhibited more pronounced changes in electrical parameters compared to the Hartmann solution. Similarly, NaCl solution displayed superior discriminatory capabilities among tissues, with variations of 465%, 157%, and 206%. Distinct spectral modifications were identified, with tissues demonstrating unique responses at each frequency of analysis relative to untreated tissue. Variations in bandwidth alterations were discernible among tissues, providing clear distinctions. In conclusion, the research showed that the crystalloid solution exhibited greater sensitivity and superior tissue contrast at specific frequencies. This study's findings underscore the feasibility of implementing crystalloid solutions to enhance tissue discrimination, similar to the effects of contrast agents.
Collapse
Affiliation(s)
- Andrea Cervantes
- Science and Engineering Division, University of Guanajuato, León, Guanajuato, 37150, Mexico
| | - Gonzalo Paez
- Center for Research in Optics, León, Guanajuato, 37150, Mexico.
| | | | | | - Svetlana Kashina
- Science and Engineering Division, University of Guanajuato, León, Guanajuato, 37150, Mexico.
| |
Collapse
|
4
|
Qiang Y, Dieujuste D, Liu J, Alvarez O, Du E. Rapid electrical impedance detection of sickle cell vaso-occlusion in microfluidic device. Biomed Microdevices 2023; 25:23. [PMID: 37347436 PMCID: PMC10364463 DOI: 10.1007/s10544-023-00663-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2023] [Indexed: 06/23/2023]
Abstract
Sickle cell disease is characterized by painful vaso-occlusive crises, in which poorly deformable sickle cells play an important role in the complex vascular obstruction process. Existing techniques are mainly based on optical microscopy and video processing of sickle blood flow under normoxic condition, for measuring vaso-occlusion by a small fraction of dense sickle cells of intrinsic rigidity but not the vaso-occlusion by the rigid, sickled cells due to deoxygenation. Thus, these techniques are not suitable for rapid, point-of-care testing. Here, we integrate electrical impedance sensing and Polydimethylsiloxane-microvascular mimics with controlled oxygen level into a single microfluidic chip, for quantification of vaso-occlusion by rigid, sickled cells within 1 min. Electrical impedance measurements provided a label-free, real-time detection of different sickle cell flow behaviors, including steady flow, vaso-occlusion, and flow recovery in response to the deoxygenation-reoxygenation process that are validated by microscopic videos. Sensitivity of the real part and imaginary part of the impedance signals to the blood flow conditions in both natural sickle cell blood and simulants at four electrical frequencies (10, 50, 100, and 500 kHz) are compared. The results show that the sensitivity of the sensor in detection of vaso-occlusion decreases as electrical frequency increases, while the higher frequencies are preferable in measurement of steady flow behavior. Additional testing using sickle cell simulants, chemically crosslinked normal red blood cells, shows same high sensitivity in detection of vaso-occlusion as sickle cell vaso-occlusion under deoxygenation. This work enables point-of-care testing potentials in rapid, accurate detection of steady flow and sickle cell vaso-occlusion from microliter volume blood specimens. Quantification of sickle cell rheology in response to hypoxia, may provide useful indications for not only the kinetics of cell sickling, but also the altered hemodynamics as obseved at the microcirculatory level.
Collapse
Affiliation(s)
- Yuhao Qiang
- Department of Ocean and Mechanical Engineering, Florida Atlantic University, Boca Raton, FL, 33431, USA
| | - Darryl Dieujuste
- Department of Ocean and Mechanical Engineering, Florida Atlantic University, Boca Raton, FL, 33431, USA
| | - Jia Liu
- Department of Ocean and Mechanical Engineering, Florida Atlantic University, Boca Raton, FL, 33431, USA
| | - Ofelia Alvarez
- Division of Pediatric Hematology and Oncology, University of Miami, Miami, FL, 33136, USA
| | - E Du
- Department of Ocean and Mechanical Engineering, Florida Atlantic University, Boca Raton, FL, 33431, USA.
| |
Collapse
|
5
|
Keumarsi MM, Oskouei PF, Dezhkam R, Shamloo A, Vatandoust F, Amiri HA. Numerical study of a double-stair-shaped dielectrophoresis channel for continuous on-chip cell separation and lysis using finite element method. J Chromatogr A 2023; 1696:463960. [PMID: 37030128 DOI: 10.1016/j.chroma.2023.463960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/16/2023] [Accepted: 04/01/2023] [Indexed: 04/04/2023]
Abstract
Prognostication of numerous chronic diseases are in need of identifying circulating tumor cells (CTCs), afterwards, separating and reviving contaminated samples are required. Conventional methods of separating blood cells, namely cytometry or magnetically activated cell sorting, in many cases lose their functionality, or efficiency under different conditions. Hence microfluidic methods of separation have been implemented. Herein, an innovative integrated double stair-shaped microchannel is designed and optimized, capable of 'separation', and 'chemical lysis' simultaneously in which the lysis reagent concentration can be controlled to tune the lysis intensity. The method of insulator-based dielectrophoresis (iDEP), which is the main physics in this device, is utilized yielding maximum separation. Pivotal features of the applied voltage, the voltage difference, the angles and the number of stairs, and the width of the throat in the microchannel have been numerically explored in order to optimize the channel in terms of separation and the lysis buffer concentration. The overall state of optimum case for the voltage difference (ΔV) of 10 owns the following features: the number of stairs is 2, the angle of stairs is 110°, the width of throat is 140 μm, and the inlet voltages are 30 V and 40 V. Also, the overall state of optimum cases for delta possess the following features: the number of stairs is 2, the angle of stairs is 110°, the width of throat is 140 μm, and the inlet voltages are 30 V and 35 V.
Collapse
Affiliation(s)
| | - Pouria Feyzi Oskouei
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
| | - Rasool Dezhkam
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Center, Sharif University of Technology, Tehran, Iran
| | - Amir Shamloo
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Center, Sharif University of Technology, Tehran, Iran.
| | - Farzad Vatandoust
- School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran; Department of Biomechanics, School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
| | - Hoseyn A Amiri
- School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran; Department of Biomechanics, School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
| |
Collapse
|
6
|
Abasi S, Aggas JR, Garayar-Leyva GG, Walther BK, Guiseppi-Elie A. Bioelectrical Impedance Spectroscopy for Monitoring Mammalian Cells and Tissues under Different Frequency Domains: A Review. ACS MEASUREMENT SCIENCE AU 2022; 2:495-516. [PMID: 36785772 PMCID: PMC9886004 DOI: 10.1021/acsmeasuresciau.2c00033] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 08/05/2022] [Accepted: 08/05/2022] [Indexed: 05/13/2023]
Abstract
Bioelectrical impedance analysis and bioelectrical impedance spectroscopy (BIA/BIS) of tissues reveal important information on molecular composition and physical structure that is useful in diagnostics and prognostics. The heterogeneity in structural elements of cells, tissues, organs, and the whole human body, the variability in molecular composition arising from the dynamics of biochemical reactions, and the contributions of inherently electroresponsive components, such as ions, proteins, and polarized membranes, have rendered bioimpedance challenging to interpret but also a powerful evaluation and monitoring technique in biomedicine. BIA/BIS has thus become the basis for a wide range of diagnostic and monitoring systems such as plethysmography and tomography. The use of BIA/BIS arises from (i) being a noninvasive and safe measurement modality, (ii) its ease of miniaturization, and (iii) multiple technological formats for its biomedical implementation. Considering the dependency of the absolute and relative values of impedance on frequency, and the uniqueness of the origins of the α-, β-, δ-, and γ-dispersions, this targeted review discusses biological events and underlying principles that are employed to analyze the impedance data based on the frequency range. The emergence of BIA/BIS in wearable devices and its relevance to the Internet of Medical Things (IoMT) are introduced and discussed.
Collapse
Affiliation(s)
- Sara Abasi
- Center
for Bioelectronics, Biosensors and Biochips (C3B®), Department
of Biomedical Engineering, Texas A&M
University, 400 Bizzell Street, College Station, Texas 77843, United States
- Cell
Culture Media Services, Cytiva, 100 Results Way, Marlborough, Massachusetts 01752, United States
| | - John R. Aggas
- Center
for Bioelectronics, Biosensors and Biochips (C3B®), Department
of Biomedical Engineering, Texas A&M
University, 400 Bizzell Street, College Station, Texas 77843, United States
- Test
Development, Roche Diagnostics, 9115 Hague Road, Indianapolis, Indiana 46256, United
States
| | - Guillermo G. Garayar-Leyva
- Center
for Bioelectronics, Biosensors and Biochips (C3B®), Department
of Biomedical Engineering, Texas A&M
University, 400 Bizzell Street, College Station, Texas 77843, United States
- Department
of Electrical and Computer Engineering, Texas A&M University, 400 Bizzell Street, College Station, Texas 77843, United States
| | - Brandon K. Walther
- Center
for Bioelectronics, Biosensors and Biochips (C3B®), Department
of Biomedical Engineering, Texas A&M
University, 400 Bizzell Street, College Station, Texas 77843, United States
- Department
of Cardiovascular Sciences, Houston Methodist
Institute for Academic Medicine and Houston Methodist Research Institute, 6670 Bertner Avenue, Houston, Texas 77030, United States
| | - Anthony Guiseppi-Elie
- Center
for Bioelectronics, Biosensors and Biochips (C3B®), Department
of Biomedical Engineering, Texas A&M
University, 400 Bizzell Street, College Station, Texas 77843, United States
- Department
of Electrical and Computer Engineering, Texas A&M University, 400 Bizzell Street, College Station, Texas 77843, United States
- Department
of Cardiovascular Sciences, Houston Methodist
Institute for Academic Medicine and Houston Methodist Research Institute, 6670 Bertner Avenue, Houston, Texas 77030, United States
- ABTECH Scientific,
Inc., Biotechnology Research Park, 800 East Leigh Street, Richmond, Virginia 23219, United
States
- . Tel.: +1(804)347.9363.
Fax: +1(804)347.9363
| |
Collapse
|
7
|
Di Gregorio E, Israel S, Staelens M, Tankel G, Shankar K, Tuszyński JA. The distinguishing electrical properties of cancer cells. Phys Life Rev 2022; 43:139-188. [PMID: 36265200 DOI: 10.1016/j.plrev.2022.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 11/07/2022]
Abstract
In recent decades, medical research has been primarily focused on the inherited aspect of cancers, despite the reality that only 5-10% of tumours discovered are derived from genetic causes. Cancer is a broad term, and therefore it is inaccurate to address it as a purely genetic disease. Understanding cancer cells' behaviour is the first step in countering them. Behind the scenes, there is a complicated network of environmental factors, DNA errors, metabolic shifts, and electrostatic alterations that build over time and lead to the illness's development. This latter aspect has been analyzed in previous studies, but how the different electrical changes integrate and affect each other is rarely examined. Every cell in the human body possesses electrical properties that are essential for proper behaviour both within and outside of the cell itself. It is not yet clear whether these changes correlate with cell mutation in cancer cells, or only with their subsequent development. Either way, these aspects merit further investigation, especially with regards to their causes and consequences. Trying to block changes at various levels of occurrence or assisting in their prevention could be the key to stopping cells from becoming cancerous. Therefore, a comprehensive understanding of the current knowledge regarding the electrical landscape of cells is much needed. We review four essential electrical characteristics of cells, providing a deep understanding of the electrostatic changes in cancer cells compared to their normal counterparts. In particular, we provide an overview of intracellular and extracellular pH modifications, differences in ionic concentrations in the cytoplasm, transmembrane potential variations, and changes within mitochondria. New therapies targeting or exploiting the electrical properties of cells are developed and tested every year, such as pH-dependent carriers and tumour-treating fields. A brief section regarding the state-of-the-art of these therapies can be found at the end of this review. Finally, we highlight how these alterations integrate and potentially yield indications of cells' malignancy or metastatic index.
Collapse
Affiliation(s)
- Elisabetta Di Gregorio
- Dipartimento di Ingegneria Meccanica e Aerospaziale (DIMEAS), Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino, 10129, TO, Italy; Autem Therapeutics, 35 South Main Street, Hanover, 03755, NH, USA
| | - Simone Israel
- Dipartimento di Ingegneria Meccanica e Aerospaziale (DIMEAS), Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino, 10129, TO, Italy; Autem Therapeutics, 35 South Main Street, Hanover, 03755, NH, USA
| | - Michael Staelens
- Department of Physics, University of Alberta, 11335 Saskatchewan Drive NW, Edmonton, T6G 2E1, AB, Canada
| | - Gabriella Tankel
- Department of Mathematics & Statistics, McMaster University, 1280 Main Street West, Hamilton, L8S 4K1, ON, Canada
| | - Karthik Shankar
- Department of Electrical & Computer Engineering, University of Alberta, 9211 116 Street NW, Edmonton, T6G 1H9, AB, Canada
| | - Jack A Tuszyński
- Dipartimento di Ingegneria Meccanica e Aerospaziale (DIMEAS), Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino, 10129, TO, Italy; Department of Physics, University of Alberta, 11335 Saskatchewan Drive NW, Edmonton, T6G 2E1, AB, Canada; Department of Oncology, University of Alberta, 11560 University Avenue, Edmonton, T6G 1Z2, AB, Canada.
| |
Collapse
|
8
|
Verhaalen MA, Berry DT, Shea AR, McCallum KE, Dexheimer CA, Slinde CH, Rolli AC, Javan-Khoshkholgh A. A Wearable Wideband Analog Bio-Impedance Analyzer for Real-Time Monitoring of Human Physiology. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2022; 2022:918-921. [PMID: 36086460 DOI: 10.1109/embc48229.2022.9871827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Continuous monitoring of electrophysiological activities of the human body is a significant step toward the effective prognosis, diagnosis, and management of functional disorders and cardiovascular diseases. This paper presents the development of a wireless system for the real-time acquisition of hemodynamics data and ambulatory monitoring of body composition based on electrical bio-impedance (Bio-Z) analysis. The developed system is composed of a low-power wearable unit and a stationary unit connected to a computer. The system conducts the non-radiative non-invasive Bio-Z analysis over a wide bandwidth of 1 MHz through four independent channels. The proposed analog approach detects the physiological activity by extracting the magnitude of the mixed Bio-Z signal, in real-time. A graphical user interface was designed for monitoring, analysis, and storage of the processed data. Moreover, the amplitude and frequency of the electrical excitation signals can be instructed through the user interface, wirelessly. Bench-top validation of the system demonstrated the delivery of current signals over a wide frequency range of 1 kHz - 1 MHz and peak-to-peak amplitude of up to 20 mA. Besides, the system was able to detect the magnitude of the envelope of the mixed signal with amplitude modulation depths as low as 0.1 %. Clinical Relevance- The system provides the real-time monitoring of cardiac activity and blood pulsation in human arteries. In addition, due to the configurability of the frequency and amplitude of the current injection circuit, the system is an excellent candidate to be utilized for real-time medical imaging through electrical bio-impedance tomography as well as electrical bio-impedance spectroscopy.
Collapse
|
9
|
Nakata N, Ishibashi Y, Miyata S. Efficient Cell Impedance Measurement by Dielectrophoretic Cell Accumulation and Evaluation of Chondrogenic Phenotypes. MICROMACHINES 2022; 13:mi13060837. [PMID: 35744451 PMCID: PMC9230527 DOI: 10.3390/mi13060837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/22/2022] [Accepted: 05/24/2022] [Indexed: 02/04/2023]
Abstract
The quantitative and functional analyses of cells are important for cell-based therapies. In this study, to establish the quantitative cell analysis method, we propose an impedance measurement method supported by dielectrophoretic cell accumulation. An impedance measurement and dielectrophoresis device was constructed using opposing comb-shaped electrodes. Using dielectrophoresis, cells were accumulated to form chain-like aggregates on the electrodes to improve the measurement sensitivity of the electrical impedance device. To validate the proposed method, the electrical impedance and capacitance of primary and de-differentiated chondrocytes were measured. As a result, the impedance of the chondrocytes decreased with an increase in the passage number, whereas the capacitance increased. Therefore, the impedance measurement method proposed in this study has the potential to identify chondrocyte phenotypes.
Collapse
Affiliation(s)
- Natsumi Nakata
- Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan;
| | - Yuko Ishibashi
- Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan;
| | - Shogo Miyata
- Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan;
- Correspondence: ; Tel.: +81-45-566-1827
| |
Collapse
|
10
|
Li S, Kawashima D, Sugawara M, Obara H, Okeyo KO, Takei M. Study of transmembrane ion transport under tonicity imbalance using a combination of low frequency-electrical impedance spectroscopy (LF-EIS) and improved ion transport model. Biomed Phys Eng Express 2022; 8. [PMID: 35316798 DOI: 10.1088/2057-1976/ac5fc5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 03/22/2022] [Indexed: 11/12/2022]
Abstract
Transmembrane ion transport under tonicity imbalance has been investigated using a combination of low frequency-electrical impedance spectroscopy (LF-EIS) and improved ion transport model, by considering the cell diameterd[m] and the initial intracellular ion concentrationcin[mM] as a function of tonicity expressed by sucrose concentrationcs[mM]. The transmembrane ion transport is influenced by extracellular tonicity conditions, leading to a facilitation/inhibition of ion passage through the cell membrane. The transmembrane transport coefficientP[m s-1], which represents the ability of transmembrane ion transport, is calculated by the extracellular ion concentrations obtained by improved ion transport model and LF-EIS measurement.Pis calculated as 4.11 × 10-6and 3.44 × 10-6m s-1atcsof 10 and 30 mM representing hypotonic condition, 2.44 × 10-6m s-1atcsof 50 mM representing isotonic condition, and 3.68 × 10-6, 5.16 × 10-6, 9.51 × 10-6, and 14.89 × 10-6m s-1atcsof 75, 100, 125 and 150 mM representing hypertonic condition. The LF-EIS results indicate that the transmembrane ion transport is promoted under hypertonic and hypotonic conditions compared to isotonic condition. To verify the LF-EIS results, fluorescence intensityF[-] of extracellular potassium ions is observed to obtain the temporal distribution of average potassium ion concentration within the region of 3.6μm from cell membrane interfacecROI[mM]. The slopes of ∆cROI/cROI1to timetare 0.0003, 0.0002, and 0.0006 under hypotonic, isotonic, and hypertonic conditions, wherecROI1denotes initialcROI, which shows the same tendency with LF-EIS result that is verified by the potassium ion fluorescence observation.
Collapse
Affiliation(s)
- Songshi Li
- Graduate School of Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| | - Daisuke Kawashima
- Graduate School of Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| | - Michiko Sugawara
- Graduate School of Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| | - Hiromichi Obara
- Department of Mechanical System Engineering, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino-shi, Tokyo, 191-0065, Japan
| | - Kennedy Omondi Okeyo
- Department of Biomechanics, Institute for Frontier Life &and Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - Masahiro Takei
- Graduate School of Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| |
Collapse
|
11
|
Turgay T, Denkçeken T, Maralcan G. The role of bioimpedance spectroscopy method in severity and stages of breast cancer-related lymphedema. Turk J Surg 2022; 38:11-17. [DOI: 10.47717/turkjsurg.2022.5550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 02/21/2022] [Indexed: 11/23/2022]
Abstract
Objective: The correlation between lymphedema severity and stages determined by standard diagnostic methods and Bioimpedance Spectroscopy (BIS) technique was examined in breast cancer-related lymphedema (BCRL) patients.
Material and Methods: The bioimpedance analyzer device was connected to the 1.0 cm disc electrodes which were connected to the affected and unaffected (healthy) arm of the patients. We evaluated the performance of the impedance (Z) at multiple frequencies (5-50-100-200 kHz) and phase angle (PA), resistance (R), and reactance (XC) at 50 kHz on the lymphedema severity and stages. Bioimpedance measurements were applied to all volunteers in cooperation with the Physical Therapy and Rehabilitation Department. In this study, the correlation between BCRL severity and stages and bioimpedance values was examined.
Results: A total of 31 female patients were recruited to compare the BIS technique with standard diagnostic techniques. The severity of lymphedema was found among the patients as follows; mild 14 (45.2%), moderate 10 (32.3%), and severe 7 (22.6%). The stage distribution of volunteers was; 15 (48.4%) patients in Stage 0, 10 (32.3%) patients in Stage 1, 5 (16.1%) patients in Stage 2, and 1 (3.2%) patient in Stage 3. The ratio of affected and unaffected arm bioimpedance mean values were calculated. Although, this ratio at 50-100-200 kHz Z and 50kHz R were significantly correlated with the lymphedema stages (p< 0.05), there was no correlation and significant difference between the ratio of the bioimpedance values and lymphedema severity (p> 0.05).
Conclusion: The BIS technique is timesaving and can determine lymphedema stages. We found a significant correlation between BCRL stages and BIS, and it appears that BIS is an appropriate, inexpensive, simple, and noninvasive technique for detecting the stages of BCRL.
Collapse
|
12
|
Menze L, Duarte PA, Haddon L, Chu M, Chen J. Selective Single-Cell Sorting Using a Multisectorial Electroactive Nanowell Platform. ACS NANO 2022; 16:211-220. [PMID: 34559518 DOI: 10.1021/acsnano.1c05668] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Current approaches in targeted patient treatments often require the rapid isolation of specific rare target cells. Stream-based dielectrophoresis (DEP) based cell sorters have the limitation that the maximum number of sortable cell types is equivalent to the number of output channels, which makes upscaling to a higher number of different cell types technically challenging. Here, we present a microfluidic platform for selective single-cell sorting that bypasses this limitation. The platform consists of 10 000 nanoliter wells which are placed on top of interdigitated electrodes (IDEs) that facilitate dielectrophoresis-driven capture of cells. By use of a multisectorial design formed by 10 individually addressable IDE structures, our platform can capture a large number of different cell types. The sectorial approach allows for fast and straightforward modification to sort complex samples as different cell types are captured in different sectors and therefore removes the need for individual output channels per cell type. Experimental results obtained with a mixed sample of benign (MCF-10A) and malignant (MDA-MB-231) breast cells showed a target to nontarget sorting accuracy of over 95%. We envision that the high accuracy of our platform, in addition to its versatility and simplicity, will aid clinical environments where reliable sorting of varying complex samples is essential.
Collapse
Affiliation(s)
- Lukas Menze
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Pedro A Duarte
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Lacey Haddon
- Department of Oncology, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Michael Chu
- Department of Oncology, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Jie Chen
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| |
Collapse
|
13
|
Díaz Pacheco A, Delgado-Macuil RJ, Larralde-Corona CP, Dinorín-Téllez-Girón J, Martínez Montes F, Martinez Tolibia SE, López Y López VE. Two-methods approach to follow up biomass by impedance spectroscopy: Bacillus thuringiensis fermentations as a study model. Appl Microbiol Biotechnol 2022; 106:1097-1112. [PMID: 35037996 DOI: 10.1007/s00253-022-11768-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 12/06/2021] [Accepted: 01/06/2022] [Indexed: 11/24/2022]
Abstract
Impedance spectroscopy is used for the characterization of electrochemical systems as well as for the monitoring of bioprocesses. However, the data obtained using this technique allow multiple interpretations, depending on the methodology implemented. Hence, it is necessary to establish a robust methodology to reliably follow-up biomass in fermentations. In the present work, two methodological approaches, mainly used for the characterization of electrochemical systems, were employed to characterize and determine a frequency that allows the monitoring of biomass in Bacillus thuringiensis fermentations by impedance spectroscopy. The first approach, based on a conventional analysis, revealed a single distribution with a characteristic frequency of around 2 kHz. In contrast, the second approach, based on the distribution of relaxation times, gave three distributions (A, B, and C). The C distribution, found near 9 kHz, was more related to the microbial biomass than the distribution at 2 kHz using the equivalent circuits. The time course of the B. thuringiensis fermentation was followed; bacilli, spores, glucose, and acid and base consumption for pH were determined out of line; and capacitance at 9 kHz was monitored. The correlation between the time course data and the capacitance profile indicated that the monitoring of B. thuringiensis at 9 kHz mainly corresponds to extracellular activity and, in a second instance, to the cellular concentration. These results show that it is necessary to establish a robust and reliable methodology to monitor fermentation processes by impedance spectroscopy, and the distribution of relaxation times was more appropriate. KEY POINTS: • Application of impedance spectroscopy for bioprocess monitoring • Low-frequency monitoring of biomass in fermentations • Analysis of impedance data by two methodological approaches.
Collapse
Affiliation(s)
- Adrián Díaz Pacheco
- Instituto Politécnico Nacional, Centro de Investigación en Biotecnología Aplicada, Carretera Estatal Santa Inés Tecuexcomac- Tepetitla, km 1.5, Tepetitla de Lardizábal, Tlaxcala, C.P. 90700, México
| | - Raul Jacobo Delgado-Macuil
- Instituto Politécnico Nacional, Centro de Investigación en Biotecnología Aplicada, Carretera Estatal Santa Inés Tecuexcomac- Tepetitla, km 1.5, Tepetitla de Lardizábal, Tlaxcala, C.P. 90700, México
| | - Claudia Patricia Larralde-Corona
- Instituto Politécnico Nacional, Centro de Biotecnología Genómica, Blvd. del Maestro S/N Esq. Elías Piña. Col. Narciso Mendoza, Reynosa, Tamaulipas, C.P. 88710, México
| | - Jabel Dinorín-Téllez-Girón
- Universidad Politécnica de Tlaxcala, Av. Universidad Politécnica No.1 San Pedro Xalcaltzinco, 90180, Tepeyanco, Tlaxcala, México
| | - Francisco Martínez Montes
- Instituto Politécnico Nacional, Centro de Investigación en Biotecnología Aplicada, Carretera Estatal Santa Inés Tecuexcomac- Tepetitla, km 1.5, Tepetitla de Lardizábal, Tlaxcala, C.P. 90700, México
| | - Shirlley E Martinez Tolibia
- Instituto Politécnico Nacional, Centro de Investigación en Biotecnología Aplicada, Carretera Estatal Santa Inés Tecuexcomac- Tepetitla, km 1.5, Tepetitla de Lardizábal, Tlaxcala, C.P. 90700, México
| | - Victor Eric López Y López
- Instituto Politécnico Nacional, Centro de Investigación en Biotecnología Aplicada, Carretera Estatal Santa Inés Tecuexcomac- Tepetitla, km 1.5, Tepetitla de Lardizábal, Tlaxcala, C.P. 90700, México.
| |
Collapse
|
14
|
Fan W, Xiong Q, Ge Y, liu T, Zeng S, Zhao J. Identifying the grade of bladder cancer cells using microfluidic chips based on impedance. Analyst 2022; 147:1722-1729. [DOI: 10.1039/d2an00026a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Bladder cancer diagnosis is made by microfluidic chip based-on impedance analysis.
Collapse
Affiliation(s)
- Weihua Fan
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, Shanghai, P. R. China
- Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, Guangzhou, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, Beijing, P. R. China
| | - Qiao Xiong
- Department of Urology, Changhai Hospital, Naval Medical University, 200433, Shanghai, P. R. China
| | - Yuqing Ge
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, Shanghai, P. R. China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Ting liu
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, Shanghai, P. R. China
| | - Shuxiong Zeng
- Department of Urology, Changhai Hospital, Naval Medical University, 200433, Shanghai, P. R. China
| | - Jianlong Zhao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, Shanghai, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, Beijing, P. R. China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| |
Collapse
|
15
|
Borges FG, Abdalla PP, Alves TC, Venturini ACR, Santos APD, Tasinafo Junior MF, Aznar S, Mota J, Lopes Machado DR. Classification of nutritional status by fat mass index: does the measurement tool matter? REVISTA BRASILEIRA DE CINEANTROPOMETRIA E DESEMPENHO HUMANO 2022. [DOI: 10.1590/1980-0037.2022v24e84048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract Assessment of the Nutritional Status (NS) allows screening for malnutrition and obesity, conditions associated with chronic non-communicable diseases. The fat mass index (FMI) stands out concerning traditional NS indicators. However, proposals that define thresholds for FMI are not sensitive to discriminate extreme cases (degrees of obesity or thinness). Only one proposal (NHANES), determined by total body densitometry (DXA), established eight categories of NS classification (FMI). However, DXA is expensive and not always clinically available. Our study aims to test the validity of the NHANES method using electrical bioimpedance (BIA) and skinfold thickness (ST) to classify NS. The FMI of 135 (69 women) university students aged 18 to 30 years old was determined using DXA, BIA, and ST. The agreement between the instruments (Bland-Altman) and the agreement coefficient in the NS classifications (Chi-square and Kappa index) were tested. The agreement test against DXA indicated that ST underestimated the FMI (-1.9 kg/m2) for both sexes and BIA in women (-2.0 kg/m2). However, BIA overestimated FMI (1.4 kg/m2) in men, although with less bias. There was no agreement between the NS classifications (NHANES) by FMI between DXA and BIA, or DXA and ST. The exception occurred between DXA and BIA in men who showed a slightly better consensus, considered “fair” (k = 0.214; p = 0.001). In conclusion, ST and BIA did not show enough agreement to replace DXA for NS classification, within NHANES thresholds. The FMI measurement tools for the NHANES classification of the categories of NS matters.
Collapse
Affiliation(s)
| | - Pedro Pugliesi Abdalla
- Universidade de São Paulo, Brazil; Universidade de São Paulo, Brazil; Universidade do Porto, Portugal
| | | | | | - André Pereira dos Santos
- Universidade de São Paulo, Brazil; Universidade de São Paulo, Brazil; Universidade de São Paulo, Brazil; Universidade de São Paulo, Brazil
| | | | | | | | - Dalmo Roberto Lopes Machado
- Universidade de São Paulo, Brazil; Universidade de São Paulo, Brazil; Universidade de São Paulo, Brazil; Universidade do Porto, Portugal
| |
Collapse
|
16
|
Leung TKW, Ji X, Peng B, Chik GKK, Dai DSHS, Fang G, Zhang T, Cheng X, Kwok KW, Tsang ACO, Leung GKK, Chan PKL. Micro‐electrodes for in situ temperature and bio‐impedance measurement. NANO SELECT 2021. [DOI: 10.1002/nano.202100041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Timothy Ka Wai Leung
- Department of Mechanical Engineering The University of Hong Kong, Pokfulam Hong Kong
| | - Xudong Ji
- Department of Mechanical Engineering The University of Hong Kong, Pokfulam Hong Kong
| | - Boyu Peng
- Department of Mechanical Engineering The University of Hong Kong, Pokfulam Hong Kong
| | - Gary Kwok Ki Chik
- Department of Mechanical Engineering The University of Hong Kong, Pokfulam Hong Kong
- Advanced Biomedical Instrumentation Centre Hong Kong
| | - Derek Shui Hong Siddhartha Dai
- Department of Mechanical Engineering The University of Hong Kong, Pokfulam Hong Kong
- Advanced Biomedical Instrumentation Centre Hong Kong
| | - Ge Fang
- Department of Mechanical Engineering The University of Hong Kong, Pokfulam Hong Kong
| | - Tengfei Zhang
- Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen China
| | - Xing Cheng
- Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen China
| | - Ka Wai Kwok
- Department of Mechanical Engineering The University of Hong Kong, Pokfulam Hong Kong
| | | | | | - Paddy Kwok Leung Chan
- Department of Mechanical Engineering The University of Hong Kong, Pokfulam Hong Kong
- Advanced Biomedical Instrumentation Centre Hong Kong
| |
Collapse
|
17
|
Paivana G, Barmpakos D, Mavrikou S, Kallergis A, Tsakiridis O, Kaltsas G, Kintzios S. Evaluation of Cancer Cell Lines by Four-Point Probe Technique, by Impedance Measurements in Various Frequencies. BIOSENSORS 2021; 11:345. [PMID: 34562935 PMCID: PMC8466278 DOI: 10.3390/bios11090345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/11/2021] [Accepted: 09/14/2021] [Indexed: 12/14/2022]
Abstract
Cell-based biosensors appear to be an attractive tool for the rapid, simple, and cheap monitoring of chemotherapy effects at a very early stage. In this study, electrochemical measurements using a four-point probe method were evaluated for suspensions of four cancer cell lines of different tissue origins: SK-N-SH, HeLa, MCF-7 and MDA-MB-231, all for two different population densities: 50 K and 100 K cells/500 μL. The anticancer agent doxorubicin was applied for each cell type in order to investigate whether the proposed technique was able to determine specific differences in cell responses before and after drug treatment. The proposed methodology can offer valuable insight into the frequency-dependent bioelectrical responses of various cellular systems using a low frequency range and without necessitating lengthy cell culture treatment. The further development of this biosensor assembly with the integration of specially designed cell/electronic interfaces can lead to novel diagnostic biosensors and therapeutic bioelectronics.
Collapse
Affiliation(s)
- Georgia Paivana
- Laboratory of Cell Technology, Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855 Athens, Greece; (G.P.); (S.K.)
| | - Dimitris Barmpakos
- microSENSES Laboratory, Department of Electrical and Electronics Engineering, Faculty of Engineering, University of West Attica, 12244 Athens, Greece; (D.B.); (A.K.); (O.T.); (G.K.)
| | - Sophie Mavrikou
- Laboratory of Cell Technology, Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855 Athens, Greece; (G.P.); (S.K.)
| | - Alexandros Kallergis
- microSENSES Laboratory, Department of Electrical and Electronics Engineering, Faculty of Engineering, University of West Attica, 12244 Athens, Greece; (D.B.); (A.K.); (O.T.); (G.K.)
| | - Odysseus Tsakiridis
- microSENSES Laboratory, Department of Electrical and Electronics Engineering, Faculty of Engineering, University of West Attica, 12244 Athens, Greece; (D.B.); (A.K.); (O.T.); (G.K.)
| | - Grigoris Kaltsas
- microSENSES Laboratory, Department of Electrical and Electronics Engineering, Faculty of Engineering, University of West Attica, 12244 Athens, Greece; (D.B.); (A.K.); (O.T.); (G.K.)
| | - Spyridon Kintzios
- Laboratory of Cell Technology, Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855 Athens, Greece; (G.P.); (S.K.)
| |
Collapse
|
18
|
Correlation between electrical characteristics and biomarkers in breast cancer cells. Sci Rep 2021; 11:14294. [PMID: 34253828 PMCID: PMC8275571 DOI: 10.1038/s41598-021-93793-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 06/28/2021] [Indexed: 11/09/2022] Open
Abstract
Both electrical properties and biomarkers of biological tissues can be used to distinguish between normal and diseased tissues, and the correlations between them are critical for clinical applications of conductivity (σ) and permittivity (ε); however, these correlations remain unknown. This study aimed to investigate potential correlations between electrical characteristics and biomarkers of breast cancer cells (BCC). Changes in σ and ε of different components in suspensions of normal cells and BCC were analyzed in the range of 200 kHz-5 MHz. Pearson's correlation coefficient heatmap was used to investigate the correlation between σ and ε of the cell suspensions at different stages and biomarkers of cell growth and microenvironment. σ and ε of the cell suspensions closely resembled those of tissues. Further, the correlations between Na+/H+ exchanger 1 and ε and σ of cell suspensions were extremely significant among all biomarkers (pε < 0.001; pσ < 0.001). There were significant positive correlations between cell proliferation biomarkers and ε and σ of cell suspensions (pε/σ < 0.05). The microenvironment may be crucial in the testing of cellular electrical properties. ε and σ are potential parameters to characterize the development of breast cancer.
Collapse
|
19
|
AbdulGani AF, Al Ahmad M. Autoregressive parametric modeling combined ANOVA approach for label-free-based cancerous and normal cells discrimination. Heliyon 2021; 7:e07027. [PMID: 34036199 PMCID: PMC8134980 DOI: 10.1016/j.heliyon.2021.e07027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 02/28/2021] [Accepted: 05/05/2021] [Indexed: 12/01/2022] Open
Abstract
Label free based methods received huge interest in the field of bio cell characterizations because they do not cause any cell damage nor contribute any change in its compositions. This work takes a close outlook of cancerous cells discrimination from normal cells utilizing parametric modeling approach. Autoregressive (AR) modeling technique is used to fit the measured optical transmittance profiles of both cancer and normal cells. The transmitted light intensity, when passes through the cells, gets affected by their intercellular compositions and membrane properties. In this study, four types of cells: lung-cancerous and normal, liver-cancerous and normal, were suspended in their corresponding medium and their transmission characteristics were collected and processed. The AR coefficients of each type of the cell were analyzed with the statistical technique called Analysis of variance (ANOVA), which provided the significant coefficients. The poles extracted from the significant coefficients resulted in an improved demarcation for normal and cancer cells. These outcomes can be further utilized for cell classification using statistical tools.
Collapse
|
20
|
Díaz Pacheco A, Delgado-Macuil RJ, Díaz-Pacheco Á, Larralde-Corona CP, Dinorín-Téllez-Girón J, López-Y-López VE. Use of equivalent circuit analysis and Cole-Cole model in evaluation of bioreactor operating conditions for biomass monitoring by impedance spectroscopy. Bioprocess Biosyst Eng 2021; 44:1923-1934. [PMID: 33884467 DOI: 10.1007/s00449-021-02572-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/09/2021] [Indexed: 10/21/2022]
Abstract
The most important parameter in bioprocesses is biomass, where not only the quantity produced in a culture but also the behavior that is presented are important concerns. It is clear that conditions of operation in a bioreactor affect biomass production, but how operation conditions affect the measurement of biomass on-line is of special interest. We studied the effect of bioreactor operating condition variations on model parameters using impedance spectroscopy for biomass monitoring. The model parameters analyzed were capacitance, resistance, alpha (α), conductivity delta (∆σ) and critical frequency (fc). These model parameters were obtained by fitting data from impedance measurements to an equivalent circuit model and Cole-Cole conductivity model. The effect of operating conditions on the medium with no cells was estimated by the percentage of change in each model parameter. The operating conditions with the most significant percentage of change were determined, by comparing to the percentage of change of the same model parameters obtained, during a fermentation of Bacillus thuringiensis as a cellular model. Equivalent circuit parameters were mainly affected by variation in pH, temperature and aeration, whereas Cole-Cole parameters were affected by variation in agitation, aeration, temperature and pH. Therefore, any variation in these operating conditions (within the test interval) during a fermentation may generate changes in monitoring parameters, which will not be a direct consequence of any change in the properties of the biomass.
Collapse
Affiliation(s)
- Adrián Díaz Pacheco
- Instituto Politécnico Nacional, Centro de Investigación en Biotecnología Aplicada, Carretera Estatal Santa Inés Tecuexcomac-Tepetitla, km 1.5, 90700, Tepetitla de Lardizábal, Tlaxcala, Mexico
| | - Raul Jacobo Delgado-Macuil
- Instituto Politécnico Nacional, Centro de Investigación en Biotecnología Aplicada, Carretera Estatal Santa Inés Tecuexcomac-Tepetitla, km 1.5, 90700, Tepetitla de Lardizábal, Tlaxcala, Mexico
| | - Ángel Díaz-Pacheco
- Departamento de Ciencias, Instituto Nacional de Astrofísica, Óptica Y Electrónica, Luis Enrique Erro No.1, Santa María Tonantzintla, 72840, San Andrés Cholula, Puebla, Mexico
| | - Claudia Patricia Larralde-Corona
- Instituto Politécnico Nacional, Centro de Biotecnología Genómica, Blvd. del Maestro S/N Esq. Elías Piña. Col. Narciso Mendoza, 88710, Reynosa, Tamaulipas, Mexico
| | - Jabel Dinorín-Téllez-Girón
- Universidad Politécnica de Tlaxcala, A. Universidad Politécnica No.1 San Pedro Xalcaltzinco, 90180, Tepeyanco, Tlaxcala, Mexico
| | - Victor Eric López-Y-López
- Instituto Politécnico Nacional, Centro de Investigación en Biotecnología Aplicada, Carretera Estatal Santa Inés Tecuexcomac-Tepetitla, km 1.5, 90700, Tepetitla de Lardizábal, Tlaxcala, Mexico.
| |
Collapse
|
21
|
YANG YANJU, CHENG CHUNLEI, YANG WENYAO, LI JIE, CHENG ZHENGFU, ZHANG XIAOYU. STUDY OF ACOUSTIC SOURCE EXCITED BY PULSED MAGNETIC FIELD. J MECH MED BIOL 2021. [DOI: 10.1142/s021951942140008x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In magnetoacoustic tomography with magnetic induction and magnetically mediated thermoacoustic imaging, tissues are exposed to an alternating field, generating magnetoacoustic and thermoacoustic effects in the tissues. This study aimed to investigate the relationship between magnetoacoustic and thermoacoustic effects in a low-conductivity object put in a Gauss-pulsed alternating magnetic field. First, the derivations of the magnetic flux density and electric field strength induced by a Gauss-pulsed current flowing through the coil based on the theory of electromagnetic field were examined. Second, the analytical solution of the magnetic field was studied by simulation. To validate the accuracy of the analytical solution, the analytical solution and the numerical simulation of the magnetic flux density were compared. It shows that the analytical solution coincides with the numerical simulation well. Then, based on the theoretical analysis of the acoustic source generation, numerical studies were conducted to simulate pressures excited by magnetoacoustic and thermoacoustic effects in low-conductivity objects similar to tissues in the Gauss-pulsed magnetic field. The thermoacoustic effect played a leading role in low-conductivity objects placed in the Gauss-pulsed magnetic field, and the magnetoacoustic effect could be ignored. This study provided the theoretical basis for further research on magnetoacoustic tomography with magnetic induction and magnetically mediated thermoacoustic imaging for pathological tissues.
Collapse
Affiliation(s)
- YANJU YANG
- Engineering Research Center of New Energy, Storage Devices and Applications, Institute of Intelligent Fault Diagnosis of Power System, Chongqing University of Arts and Sciences, Chongqing 402160, P. R. China
| | - CHUNLEI CHENG
- Engineering Research Center of New Energy, Storage Devices and Applications, Institute of Intelligent Fault Diagnosis of Power System, Chongqing University of Arts and Sciences, Chongqing 402160, P. R. China
| | - WENYAO YANG
- Engineering Research Center of New Energy, Storage Devices and Applications, Institute of Intelligent Fault Diagnosis of Power System, Chongqing University of Arts and Sciences, Chongqing 402160, P. R. China
| | - JIE LI
- Engineering Research Center of New Energy, Storage Devices and Applications, Institute of Intelligent Fault Diagnosis of Power System, Chongqing University of Arts and Sciences, Chongqing 402160, P. R. China
| | - ZHENGFU CHENG
- Engineering Research Center of New Energy, Storage Devices and Applications, Institute of Intelligent Fault Diagnosis of Power System, Chongqing University of Arts and Sciences, Chongqing 402160, P. R. China
| | - XIAOYU ZHANG
- Engineering Research Center of New Energy, Storage Devices and Applications, Institute of Intelligent Fault Diagnosis of Power System, Chongqing University of Arts and Sciences, Chongqing 402160, P. R. China
| |
Collapse
|
22
|
Galpayage Dona KNU, Du E, Wei J. An impedimetric assay for the identification of abnormal mitochondrial dynamics in living cells. Electrophoresis 2020; 42:163-170. [PMID: 33169407 DOI: 10.1002/elps.202000125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 10/30/2020] [Accepted: 11/03/2020] [Indexed: 01/16/2023]
Abstract
Mitochondrial dynamics (fission and fusion) plays an important role in cell functions. Disruption in mitochondrial dynamics has been associated with diseases such as neurobiological disorders and cardiovascular diseases. Analysis of mitochondrial fission/fusion has been mostly achieved through direct visualization of the fission/fusion events in live-cell imaging of fluorescently labeled mitochondria. In this study, we demonstrated a label-free, non-invasive Electrical Impedance Spectroscopy (EIS) approach to analyze mitochondrial dynamics in a genetically modified human neuroblastoma SH-SY5Y cell line with no huntingtin protein expression. Huntingtin protein has been shown to regulate mitochondria dynamics. We performed EIS studies on normal SH-SY5Y cells and two independent clones of huntingtin-null cells. The impedance data was used to determine the suspension conductivity and further cytoplasmic conductivity and relate to the abnormal mitochondrial dynamics. For instance, the cytoplasm conductivity value was increased by 11% from huntingtin-null cells to normal cells. Results of this study demonstrated that EIS is sensitive to characterize the abnormal mitochondrial dynamics that can be difficult to quantify by the conventional microscopic method.
Collapse
Affiliation(s)
| | - E Du
- Department of Ocean and Mechanical Engineering, Florida Atlantic University, Boca Raton, Florida, USA
| | - Jianning Wei
- Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, Florida, USA
| |
Collapse
|
23
|
Turcan I, Olariu MA. Dielectrophoretic Manipulation of Cancer Cells and Their Electrical Characterization. ACS COMBINATORIAL SCIENCE 2020; 22:554-578. [PMID: 32786320 DOI: 10.1021/acscombsci.0c00109] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Electromanipulation and electrical characterization of cancerous cells is becoming a topic of high interest as the results reported to date demonstrate a good differentiation among various types of cells from an electrical viewpoint. Dielectrophoresis and broadband dielectric spectroscopy are complementary tools for sorting, identification, and characterization of malignant cells and were successfully used on both primary tumor cells and culture cells as well. However, the literature is presenting a plethora of studies with respect to electrical evaluation of these type of cells, and this review is reporting a collection of information regarding the functioning principles of different types of dielectrophoresis setups, theory of cancer cell polarization, and electrical investigation (including here the polarization mechanisms). The interpretation of electrical characteristics against frequency is discussed with respect to interfacial/Maxwell-Wagner polarization and the parasitic influence of electrode polarization. Moreover, the electrical equivalent circuits specific to biological cells polarizations are discussed for a good understanding of the cells' morphology influence. The review also focuses on advantages of specific low-conductivity buffers employed currently for improving the efficiency of dielectrophoresis and provides a set of synthesized data from the literature highlighting clear differentiation between the crossover frequencies of different cancerous cells.
Collapse
Affiliation(s)
- Ina Turcan
- Department of Electrical Measurements and Materials, Faculty of Electrical Engineering and Information Technology, Gheorghe Asachi Technical University of Iasi, Profesor Dimitrie Mangeron Boulevard, No. 21−23, Iasi 700050, Romania
| | - Marius Andrei Olariu
- Department of Electrical Measurements and Materials, Faculty of Electrical Engineering and Information Technology, Gheorghe Asachi Technical University of Iasi, Profesor Dimitrie Mangeron Boulevard, No. 21−23, Iasi 700050, Romania
| |
Collapse
|
24
|
Crowell LL, Yakisich JS, Aufderheide B, Adams TNG. Electrical Impedance Spectroscopy for Monitoring Chemoresistance of Cancer Cells. MICROMACHINES 2020; 11:E832. [PMID: 32878225 PMCID: PMC7570252 DOI: 10.3390/mi11090832] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 12/14/2022]
Abstract
Electrical impedance spectroscopy (EIS) is an electrokinetic method that allows for the characterization of intrinsic dielectric properties of cells. EIS has emerged in the last decade as a promising method for the characterization of cancerous cells, providing information on inductance, capacitance, and impedance of cells. The individual cell behavior can be quantified using its characteristic phase angle, amplitude, and frequency measurements obtained by fitting the input frequency-dependent cellular response to a resistor-capacitor circuit model. These electrical properties will provide important information about unique biomarkers related to the behavior of these cancerous cells, especially monitoring their chemoresistivity and sensitivity to chemotherapeutics. There are currently few methods to assess drug resistant cancer cells, and therefore it is difficult to identify and eliminate drug-resistant cancer cells found in static and metastatic tumors. Establishing techniques for the real-time monitoring of changes in cancer cell phenotypes is, therefore, important for understanding cancer cell dynamics and their plastic properties. EIS can be used to monitor these changes. In this review, we will cover the theory behind EIS, other impedance techniques, and how EIS can be used to monitor cell behavior and phenotype changes within cancerous cells.
Collapse
Affiliation(s)
- Lexi L. Crowell
- Department of Chemical and Biomolecular Engineering, University of California-Irvine, Irvine, CA 92697, USA;
- Sue & Bill Gross Stem Cell Research Center, University of California Irvine, Irvine, CA 92697, USA
| | - Juan S. Yakisich
- Department of Pharmaceutical Sciences, Hampton University, Hampton, VA 23668, USA;
| | - Brian Aufderheide
- Department of Chemical Engineering, Hampton University, Hampton, VA 23668, USA;
| | - Tayloria N. G. Adams
- Department of Chemical and Biomolecular Engineering, University of California-Irvine, Irvine, CA 92697, USA;
- Sue & Bill Gross Stem Cell Research Center, University of California Irvine, Irvine, CA 92697, USA
| |
Collapse
|
25
|
Ambrico M, Lasalvia M, Ligonzo T, Ambrico PF, Perna G, Capozzi V. Recognition of healthy and cancerous breast cells: Sensing the differences by dielectric spectroscopy. Med Phys 2020; 47:5373-5382. [PMID: 32750750 DOI: 10.1002/mp.14425] [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: 01/14/2020] [Revised: 07/08/2020] [Accepted: 07/27/2020] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The response of human cells to applied electrical signals depends on the cellular health status, because it is influenced by the composition and structure of the main cellular components. Therefore, electrical impedance-based techniques can be considered as sensitive tools to investigate healthy or disease state at cellular level. The goal of this study is to show that different types of in vitro cellular lines, related to different health status, can be differentiated using impedance spectra analysis. METHODS Three different types of human breast cell line, corresponding to healthy, cancerous, and metastatic adenocarcinoma cells, were measured by means of electrical impedance spectroscopy. By modeling the investigated cells with proper resistive and capacitive circuital elements, the magnitude of the cell electrical components and spectra of real and imaginary part of dielectric permittivity were obtained. The latter were subsequently examined with a commonly adopted mathematical model, in order to estimate the values of specific dielectric parameters for the three different cellular lines. RESULTS The relative variation of cellular capacitance with respect to that of the culture medium, estimated at 100 Hz, has a larger value for the two types of cancerous cells with respect to the noncancerous type. Furthermore, the ratio between the real and imaginary part of the dielectric permittivity function has larger values for metastatic cells with respect to the normal and nonmetastatic ones. Therefore, the mentioned relative capacitance allows to discriminate between normal and cancerous cells, whereas the results obtained for the dielectric function can discriminate between metastatic and nonmetastatic cells. CONCLUSIONS This study can be considered as an exploratory investigation of evaluating in vitro the health status of humans cells using selected electrical impedance parameters as potential markers. The obtained results highlight that a standard cultureware system, provided with interdigitated electrodes and appropriate impedance parameters, that is, cellular capacitance and the ratio between the imaginary and real part of cellular dielectric function, can be used to discriminate between healthy and cancerous breast cell lines, as well as different malignancy degrees.
Collapse
Affiliation(s)
- M Ambrico
- CNR-ISTP Istituto per la Scienza e Tecnologia dei Plasmi - Sede di Bari, Via Amendola 122/D, Bari, 70125, Italy.,Istituto Nazionale di Fisica Nucleare - Sezione di Bari, Via Amendola Via Amendola 173, Bari, 70125, Italy
| | - M Lasalvia
- Istituto Nazionale di Fisica Nucleare - Sezione di Bari, Via Amendola Via Amendola 173, Bari, 70125, Italy.,Dipartimento di Medicina Clinica e Sperimentale, Università di Foggia, Viale L. Pinto 1, Foggia, 71122, Italy
| | - T Ligonzo
- Istituto Nazionale di Fisica Nucleare - Sezione di Bari, Via Amendola Via Amendola 173, Bari, 70125, Italy.,Dipartimento Interateneo di Fisica "M. Merlin" Università degli Studi di Bari, Via Amendola 173, Bari, 70125, Italy
| | - P F Ambrico
- CNR-ISTP Istituto per la Scienza e Tecnologia dei Plasmi - Sede di Bari, Via Amendola 122/D, Bari, 70125, Italy.,Istituto Nazionale di Fisica Nucleare - Sezione di Bari, Via Amendola Via Amendola 173, Bari, 70125, Italy
| | - G Perna
- Istituto Nazionale di Fisica Nucleare - Sezione di Bari, Via Amendola Via Amendola 173, Bari, 70125, Italy.,Dipartimento di Medicina Clinica e Sperimentale, Università di Foggia, Viale L. Pinto 1, Foggia, 71122, Italy
| | - V Capozzi
- Istituto Nazionale di Fisica Nucleare - Sezione di Bari, Via Amendola Via Amendola 173, Bari, 70125, Italy.,Dipartimento di Medicina Clinica e Sperimentale, Università di Foggia, Viale L. Pinto 1, Foggia, 71122, Italy
| |
Collapse
|
26
|
Calvo PC, Campo O, Guerra C, Castaño S, Fonthal F. Design of using chamber system based on electrical impedance spectroscopy (EIS) to measure epithelial tissue. SENSING AND BIO-SENSING RESEARCH 2020. [DOI: 10.1016/j.sbsr.2020.100357] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
27
|
González-Díaz CA, Golberg A. Sensitivity analysis of electrical bioimpedance patterns of breast cancer cells labeled with magnetic nanoparticles: forming the foundation for a biosensor of circulating tumor cells. Physiol Meas 2020; 41:064001. [DOI: 10.1088/1361-6579/ab9377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
28
|
Biopsy needle integrated with multi-modal physical/chemical sensor array. Biosens Bioelectron 2020; 148:111822. [DOI: 10.1016/j.bios.2019.111822] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/16/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022]
|
29
|
Roy A, Bhattacharjee S, Podder S, Ghosh A. Measurement of bioimpedance and application of Cole model to study the effect of moisturizing cream on human skin. AIMS BIOPHYSICS 2020. [DOI: 10.3934/biophy.2020025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
30
|
A CMOS Low Pass Filter for SoC Lock-in-Based Measurement Devices. SENSORS 2019; 19:s19235173. [PMID: 31779162 PMCID: PMC6928706 DOI: 10.3390/s19235173] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/15/2019] [Accepted: 11/22/2019] [Indexed: 12/23/2022]
Abstract
This paper presents a fully integrated Gm–C low pass filter (LPF) based on a current steering Gm reduction-tuning technique, specifically designed to operate as the output stage of a SoC lock-in amplifier. To validate this proposal, a first-order and a second-order single-ended topology were integrated into a 1.8 V to 0.18 µm CMOS (Complementary Metal-Oxide-Semiconductor) process, showing experimentally a tuneable cutoff frequency that spanned five orders of magnitude, from tens of mHz to kHz, with a constant current consumption (below 3 µA/pole), compact size (<0.0140 mm2/pole), and a dynamic range better than 70 dB. Compared to state-of-the-art solutions, the proposed approach exhibited very competitive performances while simultaneously fully satisfying the demanding requirements of on-chip portable measurement systems in terms of highly efficient area and power. This is of special relevance, taking into account the current trend towards multichannel instruments to process sensor arrays, as the total area and power consumption will be proportional to the number of channels.
Collapse
|
31
|
Subhan S, Ha S. A Harmonic Error Cancellation Method for Accurate Clock-Based Electrochemical Impedance Spectroscopy. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2019; 13:710-724. [PMID: 31226085 DOI: 10.1109/tbcas.2019.2923719] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Electrochemical impedance spectroscopy (EIS) is a widely used method to characterize the biological materials. In traditional methods for EIS, a sinusoidal current is used to excite the material under test and the measured voltage across that material is demodulated by a linear multiplication with quadrature sinusoidal signals. From the resulting demodulated output, the impedance (magnitude and phase) can be calculated. Although this sine-wave-based impedance measurement method can produce accurate impedance measurements, it requires bulky components and suffers from poor power efficiency due to sinusoidal waveform generation and linear multiplication. Alternatively, a method using square-wave signal, which is simply a clock, for both excitation and demodulation can be much more area and power efficient, but inherently suffers from substantial errors in the result due to significant harmonics in square waves. In this paper, we propose a technique to cancel out the errors caused by such harmonics of the square-wave-based excitation and demodulation. The proposed technique, based on the fact that the magnitude ratio of all the harmonics of a square wave are known, cancels out harmonic errors by subtracting or adding the square-wave-based measured results at higher harmonic frequencies as a simple post-processing calculation. Simulations on specific and also generic impedance models demonstrate the applicability of this technique to various impedance models. Experimental results using a discrete circuit model show that this technique can provide a precise measurement of the impedance with 1% magnitude error and 0.5° phase error considering just five terms. In addition, measurements with a biological tissue show an average magnitude and phase error of 0.7% and [Formula: see text], respectively, using the proposed error cancellation. Because this method replaces sinusoidal signal generation and linear multiplication with clock generation and simple switching, it has great potential to be integrated in a wearable and implantable health monitoring device at low area and power consumption.
Collapse
|
32
|
Xu W, Sun J, Le Y, Chen J, Lu X, Yao X. Effect of pulsed millisecond current magnetic field on the proliferation of C6 rat glioma cells. Electromagn Biol Med 2019; 38:185-197. [DOI: 10.1080/15368378.2019.1608233] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Wenjun Xu
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, China
| | - Jinru Sun
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, China
| | - Yangjing Le
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, China
| | - Jingliang Chen
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, China
| | - Xiaoyun Lu
- School of Life and Engineering, Xi’an Jiaotong University, Xi’an, China
| | - Xueling Yao
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, China
| |
Collapse
|
33
|
Huerta-Nuñez LFE, Gutierrez-Iglesias G, Martinez-Cuazitl A, Mata-Miranda MM, Alvarez-Jiménez VD, Sánchez-Monroy V, Golberg A, González-Díaz CA. A biosensor capable of identifying low quantities of breast cancer cells by electrical impedance spectroscopy. Sci Rep 2019; 9:6419. [PMID: 31015522 PMCID: PMC6478841 DOI: 10.1038/s41598-019-42776-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/28/2019] [Indexed: 12/29/2022] Open
Abstract
Breast cancer (BC) is a malignant disease with a high prevalence worldwide. The main cause of death is not the primary tumor, but instead the spread of tumor cells to distant sites. The aim of the present study was to examine a new method for the detection of cancer cells in aqueous medium using bioimpedance spectroscopy assisted with magnetic nanoparticles (MNP's) exposure to a constant magnetic field. The spectroscopic patterns were identified for three breast cancer cell lines. Each BC cell line represents a different pathologic stage: the early stage (MCF-7), invasive phase (MDA-MB-231) and metastasis (SK-BR-3). For this purpose, bioimpedance measurements were carried out at a certain frequency range with the aid of nanoprobes, consisting of magnetic nanoparticles (MNPs) coupled to a monoclonal antibody. The antibody was specific for the predominant cell surface protein for each cell line, which was identified by using RT-qPCR and flow cytometry. Accordingly, EpCAM corresponds to MCF-7, MUC-1 to MDA-MB-231, and HER-2 to SK-BR-3. Despite their low concentrations, BC cells could be detected by impedance spectroscopy. Hence, this methodology should permit the monitoring of circulating tumor cells (CTC) and therefore help to prevent recurrences and metastatic processes during BC treatment.
Collapse
Affiliation(s)
- L F E Huerta-Nuñez
- Escuela Militar de Graduados de Sanidad-Universidad del Ejército y Fuerza Aérea, México City, Mexico
- Escuela Superior de Medicina-Instituto Politécnico Nacional, México City, Mexico
| | - G Gutierrez-Iglesias
- Escuela Superior de Medicina-Instituto Politécnico Nacional, México City, Mexico
| | - A Martinez-Cuazitl
- Escuela Militar de Medicina-Universidad del Ejército y Fuerza Aérea, México City, Mexico
| | - M M Mata-Miranda
- Escuela Militar de Medicina-Universidad del Ejército y Fuerza Aérea, México City, Mexico
| | | | - V Sánchez-Monroy
- Escuela Nacional de Medicina y Homeopatía-Instituto Politécnico Nacional, México City, Mexico
| | - Alexander Golberg
- Porter School of Environmental and Earth Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - C A González-Díaz
- Escuela Superior de Medicina-Instituto Politécnico Nacional, México City, Mexico.
- Porter School of Environmental and Earth Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel.
| |
Collapse
|
34
|
Wu J, Wang P, Tang Y, Liu H, Wang H, Zhang W, Zhang Y, Chen L, Xu Z, Yao X. Technical Note: A new method to rapidly identify benign and malignant breast lumps through bioelectrical impedance spectroscopy. Med Phys 2019; 46:2522-2525. [PMID: 30859583 DOI: 10.1002/mp.13474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 02/25/2019] [Accepted: 02/28/2019] [Indexed: 01/07/2023] Open
Affiliation(s)
- Jian Wu
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Pin Wang
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Yan Tang
- Department of pathology The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Hong Liu
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Haobin Wang
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Wenjie Zhang
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Yan Zhang
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Liping Chen
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Zhangbo Xu
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Xinmin Yao
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| |
Collapse
|
35
|
Zheng T, Zhang Z, Zhu R. Flexible Trapping and Manipulation of Single Cells on a Chip by Modulating Phases and Amplitudes of Electrical Signals Applied onto Microelectrodes. Anal Chem 2019; 91:4479-4487. [DOI: 10.1021/acs.analchem.8b05228] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tianyang Zheng
- State Key Laboratory of Precision Measurement
Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China
| | - Zhizhong Zhang
- State Key Laboratory of Precision Measurement
Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China
| | - Rong Zhu
- State Key Laboratory of Precision Measurement
Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China
| |
Collapse
|
36
|
Jung M, Jeon JY, Yun GJ, Yang S, Kwon S, Seo YJ. Reference values of bioelectrical impedance analysis for detecting breast cancer-related lymphedema. Medicine (Baltimore) 2018; 97:e12945. [PMID: 30383644 PMCID: PMC6221712 DOI: 10.1097/md.0000000000012945] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Secondary lymphedema is a chronic debilitating lifelong complication and early diagnosis is crucial. The Inbody 720, which is widely used, has no universal index of diagnostic criteria for test results. We aim to determine the normal range, cutoff values, and mean + standard deviation values of extracellular fluid (ECF) and the single frequency bioimpedance (SFBIA) ratios for the diagnosis of lymphedema and suggest the usefulness of these values for detecting lymphedema.Seventy patients with unilateral breast cancer-related lymphedema and 643 healthy subjects were enrolled. All patients with breast cancer underwent surgeries with dissection of lymph nodes. We analyzed the ECF volume, SFBIA at 1- and 5-kHz frequencies using Inbody 720.There were significant differences between patients with BCRL and healthy controls. The optimal cutoff values for ECF ratios were 1.010 for both the dominant and non-dominant arms. At 1 kHz, the cutoff values of SFBIA were 1.050 and 1.046, and at 5 kHz, those were 1.070 and 1.030 for the dominant and non-dominant affected arms, respectively. The mean + 2SD values for ECF ratio were 1.018 and 1.020 and at 1 kHz, the mean + 2SD values of SFBIA were 1.144 and 1.0135 and at 5 kHz, the cutoff values of SFBIA were 1.141 and 1.124 for the dominant and non-dominant affected arms, respectively. The mean + 3SD values for ECF ratio were 1.026 and 1.030 and at 1 kHz, the mean + 3SD values of SFBIA were 1.206 and 1.203 and at 5 kHz, those were 1.201 and 1.187 for the arms, respectively. The cutoff, mean + 2SD, and mean + 3SD values were applied to 70 patients with unilateral BCRL. When the cutoff values were applied, a higher proportion of BCRL patients were included.When these figures were applied to the patient group, the cutoff values included a higher proportion of patients with lymphedema. Further studies are needed to investigate whether bioimpedance analysis can accurately predict the development of lymphedema.
Collapse
|
37
|
Sabuncu AC, Shen J, Zaki MH, Beskok A. Changes in the dielectric spectra of murine colon during neoplastic progression. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aaad81] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
38
|
Tada S, Hayashi M, Eguchi M, Tsukamoto A. High-throughput separation of cells by dielectrophoresis enhanced with 3D gradient AC electric field. BIOMICROFLUIDICS 2017; 11:064110. [PMID: 29282422 PMCID: PMC5729034 DOI: 10.1063/1.5007003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/25/2017] [Indexed: 06/02/2023]
Abstract
We propose a novel, high-performance dielectrophoretic (DEP) cell-separation flow chamber with a parallel-plate channel geometry. The flow chamber, consisting of a planar electrode on the top and an interdigitated-pair electrode array at the bottom, was developed to facilitate the separation of cells by creating a nonuniform AC electric field throughout the volume of the flow chamber. The operation and performance of the device were evaluated using live and dead human epithermal breast (MCF10A) cells. The separation dynamics of the cell suspension in the flow chamber was also investigated by numerically simulating the trajectories of individual cells. A theoretical model to describe the dynamic cell behavior under the action of DEP, including dipole-dipole interparticle, viscous, and gravitational forces, was developed. The results demonstrated that the live cells traveling through the flow chamber congregated into sites where the electric field gradient was minimal, in the middle of the flow stream slightly above the centerlines of the grounded electrodes at the bottom. Meanwhile, the dead cells were trapped on the edges of the high-voltage electrodes at the bottom. Cells were thus successfully separated with a remarkably high separation ratio (∼98%) at the appropriately tuned field frequency and applied voltage. The numerically predicted behavior and spatial distribution of the cells during separation also showed good agreement with those observed experimentally.
Collapse
Affiliation(s)
- Shigeru Tada
- Department of Applied Physics, National Defense Academy, Kanagawa, Japan
| | - Masako Hayashi
- Department of Applied Physics, National Defense Academy, Kanagawa, Japan
| | | | - Akira Tsukamoto
- Department of Applied Physics, National Defense Academy, Kanagawa, Japan
| |
Collapse
|
39
|
Martinez-Gomez C, Olmo A, Huertas G, Perez P, Maldonado-Jacobi A, Yufera A. A tracking algorithm for cell motility assays in CMOS systems. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2017; 2017:837-840. [PMID: 29060002 DOI: 10.1109/embc.2017.8036954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
This work proposes a method for the study and real-time monitoring of a single cell on a 2D electrode matrix, of great interest in cell motility assays and in the characterization of cancer cell metastasis. A CMOS system proposal for cell location based on occupation maps data generated from Electrical Cell-substrate Impedance Spectroscopy (ECIS) has been developed. From experimental assays data, an algorithm based on the analysis of the eight nearest neighbours has been implemented to find the cell center of mass. The path followed by a cell, proposing a Brownian route, has been simulated with the proposed algorithm. The presented results give an accuracy over 95% in the determination of the coordinates (x, y) from the expected cell center of mass.
Collapse
|
40
|
Low K, Wong LY, Maldonado M, Manjunath C, Horner CB, Perez M, Myung NV, Nam J. Physico-electrochemical Characterization of Pluripotent Stem Cells during Self-Renewal or Differentiation by a Multi-modal Monitoring System. Stem Cell Reports 2017; 8:1329-1339. [PMID: 28457888 PMCID: PMC5425683 DOI: 10.1016/j.stemcr.2017.03.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 01/14/2023] Open
Abstract
Monitoring pluripotent stem cell behaviors (self-renewal and differentiation to specific lineages/phenotypes) is critical for a fundamental understanding of stem cell biology and their translational applications. In this study, a multi-modal stem cell monitoring system was developed to quantitatively characterize physico-electrochemical changes of the cells in real time, in relation to cellular activities during self-renewal or lineage-specific differentiation, in a non-destructive, label-free manner. The system was validated by measuring physical (mass) and electrochemical (impedance) changes in human induced pluripotent stem cells undergoing self-renewal, or subjected to mesendodermal or ectodermal differentiation, and correlating them to morphological (size, shape) and biochemical changes (gene/protein expression). An equivalent circuit model was used to further dissect the electrochemical (resistive and capacitive) contributions of distinctive cellular features. Overall, the combination of the physico-electrochemical measurements and electrical circuit modeling collectively offers a means to longitudinally quantify the states of stem cell self-renewal and differentiation.
Collapse
Affiliation(s)
- Karen Low
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Lauren Y Wong
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Maricela Maldonado
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Chetas Manjunath
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Christopher B Horner
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Mark Perez
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Nosang V Myung
- Department of Chemical and Environmental Engineering, University of California-Riverside, Bourns Hall B355, 900 University Avenue, Riverside, CA 92521, USA
| | - Jin Nam
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA.
| |
Collapse
|
41
|
Development of multi-spot impedance sensing biopsy needle based on attachable and flexible sensor film. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2017; 2016:4788-4791. [PMID: 28269341 DOI: 10.1109/embc.2016.7591798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We demonstrate the biopsy needle capable of multi-spot impedance sensing based on attachable and flexible sensor film. In order to directly integrate sensor electrodes into curved surface of biopsy needle, attachable and thin polyimide substrate was used. Sensor electrodes were easily manipulated due to advantage of conventional microfabrication technique and this enable capability of multi-spot impedance sensing. To verify validity of proposed method, attachability of sensor film and real-time response of multi-spot sensing of fabricated biopsy needle was investigated.
Collapse
|
42
|
Garcia-Fernandez MA, Percherancier Y, Lagroye I, O'Connor RP, Veyret B, Arnaud-Cormos D, Leveque P. Dosimetric Characteristics of an EMF Delivery System Based on a Real-Time Impedance Measurement Device. IEEE Trans Biomed Eng 2016; 63:2317-2325. [PMID: 26886964 DOI: 10.1109/tbme.2016.2527927] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In this paper, the dosimetric characterization of an EMF exposure setup compatible with real-time impedance measurements of adherent biological cells is proposed. The EMF are directly delivered to the 16-well format plate used by the commercial xCELLigence apparatus. Experiments and numerical simulations were carried out for the dosimetric analysis. The reflection coefficient was less than -10 dB up to 180 MHz and this exposure system can be matched at higher frequencies up to 900 and 1800 MHz. The specific absorption rate (SAR) distribution within the wells containing the biological medium was calculated by numerical finite-difference time domain simulations and results were verified by temperature measurements at 13.56 MHz. Numerical SAR values were obtained at the microelectrode level where the biological cells were exposed to EMF including 13.56, 900, and 1800 MHz. At 13.56 MHz, the SAR values, within the cell layer and the 270-μL volume of medium, are 1.9e3 and 3.5 W/kg/incident mW, respectively.
Collapse
Affiliation(s)
| | - Yann Percherancier
- laboratoire de l'Intégration du Matériau au Système (IMS), UMR 5218, Université de Bordeaux I
| | - Isabelle Lagroye
- laboratoire de l'Intégration du Matériau au Système (IMS), UMR 5218, Université de Bordeaux I
| | | | - Bernard Veyret
- laboratoire de l'Intégration du Matériau au Système (IMS), UMR 5218, Université de Bordeaux I
| | | | | |
Collapse
|
43
|
Richter I, Alajbeg I, Boras VV, Rogulj AA, Brailo V. Mapping Electrical Impedance Spectra of the Healthy Oral Mucosa: a Pilot Study. Acta Stomatol Croat 2016; 49:331-9. [PMID: 27688418 DOI: 10.15644/asc49/4/9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVE Electrical impedance is the resistance to the electric current flow through a tissue and depends on the tissue's structure and chemical composition. The aim of this study was to map electrical impedance spectra for each region of the healthy oral mucosa. MATERIALS AND METHODS Electrical impedance was measured in 30 participants with healthy oral mucosa. Measurements were performed in 14 points on the right and the left side of the oral cavity, and repeated after 7 and 14 days respectively. RESULTS The lowest values were measured on the tongue dorsum and the highest values were measured on the hard palate. No significant differences were found between the right and the left side. Significantly higher values were found in females on the upper labial mucosa, tongue dorsum and the ventral tongue. Significant difference between smokers and non-smokers on the lower labial mucosa and floor of the mouth was found. Electrical impedance was negatively correlated with salivary flow on the upper labial mucosa, hard palate, tongue dorsum and sublingual mucosa. Higher variability of measurements was found at low frequencies. CONCLUSIONS Electrical impedance mostly depends on the degree of mucosal keratinization. Demographic and clinical factors probably affect its values. Further studies with bigger number of participants are required.
Collapse
Affiliation(s)
- Ivica Richter
- Department of Oral Medicine, School of Dental Medicine, University of Zagreb, Croatia
| | - Ivan Alajbeg
- Department of Oral Medicine, School of Dental Medicine, University of Zagreb, Croatia
| | - Vanja Vučićević Boras
- Department of Oral Medicine, School of Dental Medicine, University of Zagreb, Croatia
| | - Ana Andabak Rogulj
- Department of Oral Medicine, School of Dental Medicine, University of Zagreb, Croatia
| | - Vlaho Brailo
- Department of Oral Medicine, School of Dental Medicine, University of Zagreb, Croatia
| |
Collapse
|
44
|
Wideband Fully-Programmable Dual-Mode CMOS Analogue Front-End for Electrical Impedance Spectroscopy. SENSORS 2016; 16:s16081159. [PMID: 27463721 PMCID: PMC5017325 DOI: 10.3390/s16081159] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 07/15/2016] [Accepted: 07/19/2016] [Indexed: 11/16/2022]
Abstract
This paper presents a multi-channel dual-mode CMOS analogue front-end (AFE) for electrochemical and bioimpedance analysis. Current-mode and voltage-mode readouts, integrated on the same chip, can provide an adaptable platform to correlate single-cell biosensor studies with large-scale tissue or organ analysis for real-time cancer detection, imaging and characterization. The chip, implemented in a 180-nm CMOS technology, combines two current-readout (CR) channels and four voltage-readout (VR) channels suitable for both bipolar and tetrapolar electrical impedance spectroscopy (EIS) analysis. Each VR channel occupies an area of 0.48 mm 2 , is capable of an operational bandwidth of 8 MHz and a linear gain in the range between -6 dB and 42 dB. The gain of the CR channel can be set to 10 kΩ, 50 kΩ or 100 kΩ and is capable of 80-dB dynamic range, with a very linear response for input currents between 10 nA and 100 μ A. Each CR channel occupies an area of 0.21 mm 2 . The chip consumes between 530 μ A and 690 μ A per channel and operates from a 1.8-V supply. The chip was used to measure the impedance of capacitive interdigitated electrodes in saline solution. Measurements show close matching with results obtained using a commercial impedance analyser. The chip will be part of a fully flexible and configurable fully-integrated dual-mode EIS system for impedance sensors and bioimpedance analysis.
Collapse
|
45
|
Srinivasaraghavan V, Strobl J, Agah M. Microelectrode bioimpedance analysis distinguishes basal and claudin-low subtypes of triple negative breast cancer cells. Biomed Microdevices 2016. [PMID: 26216474 DOI: 10.1007/s10544-015-9977-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Triple negative breast cancer (TNBC) is highly aggressive and has a poor prognosis when compared to other molecular subtypes. In particular, the claudin-low subtype of TNBC exhibits tumor-initiating/cancer stem cell like properties. Here, we seek to find new biomarkers to discriminate different forms of TNBC by characterizing their bioimpedance. A customized bioimpedance sensor with four identical branched microelectrodes with branch widths adjusted to accommodate spreading of individual cells was fabricated on silicon and pyrex/glass substrates. Cell analyses were performed on the silicon devices which showed somewhat improved inter-electrode and intra-device reliability. We performed detailed analysis of the bioimpedance spectra of four TNBC cell lines, comparing the peak magnitude, peak frequency and peak phase angle between claudin-low TNBC subtype represented by MDA-MB-231 and Hs578T with that of two basal cells types, the TNBC MDA-MB-468, and an immortalized non-malignant basal breast cell line, MCF-10A. The claudin-low TNBC cell lines showed significantly higher peak frequencies and peak phase angles than the properties might be useful in distinguishing the clinically significant claudin-low subtype of TNBC.
Collapse
Affiliation(s)
- Vaishnavi Srinivasaraghavan
- The Bradley Department of Electrical and Computer Engineering, Virginia Tech, 302, Whittemore Hall, Blacksburg, VA, 24061, USA,
| | | | | |
Collapse
|
46
|
Rothbauer M, Praisler I, Docter D, Stauber RH, Ertl P. Microfluidic Impedimetric Cell Regeneration Assay to Monitor the Enhanced Cytotoxic Effect of Nanomaterial Perfusion. BIOSENSORS 2015; 5:736-49. [PMID: 26633532 PMCID: PMC4697142 DOI: 10.3390/bios5040736] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 10/28/2015] [Accepted: 11/24/2015] [Indexed: 11/17/2022]
Abstract
In the last decade, the application of nanomaterials (NMs) in technical products and biomedicine has become a rapidly increasing market trend. As the safety and efficacy of NMs are of utmost importance, new methods are needed to study the dynamic interactions of NMs at the nano-biointerface. However, evaluation of NMs based on standard and static cell culture end-point detection methods does not provide information on the dynamics of living biological systems, which is crucial for the understanding of physiological responses. To bridge this technological gap, we here present a microfluidic cell culture system containing embedded impedance microsensors to continuously and non-invasively monitor the effects of NMs on adherent cells under varying flow conditions. As a model, the impact of silica NMs on the vitality and regenerative capacity of human lung cells after acute and chronic exposure scenarios was studied over an 18-h period following a four-hour NM treatment. Results of the study demonstrated that the developed system is applicable to reliably analyze the consequences of dynamic NM exposure to physiological cell barriers in both nanotoxicology and nanomedicine.
Collapse
Affiliation(s)
- Mario Rothbauer
- BioSensor Technologies, AIT Austrian Institute of Technology GmbH, 1190 Vienna, Austria.
| | - Irene Praisler
- BioSensor Technologies, AIT Austrian Institute of Technology GmbH, 1190 Vienna, Austria.
| | - Dominic Docter
- Molecular and Cellular Oncology, ENT/University Medical Center Mainz, 55116 Mainz, Germany.
| | - Roland H Stauber
- Molecular and Cellular Oncology, ENT/University Medical Center Mainz, 55116 Mainz, Germany.
| | - Peter Ertl
- BioSensor Technologies, AIT Austrian Institute of Technology GmbH, 1190 Vienna, Austria.
| |
Collapse
|
47
|
Han SI, Han KH. Electrical Detection Method for Circulating Tumor Cells Using Graphene Nanoplates. Anal Chem 2015; 87:10585-92. [PMID: 26402053 DOI: 10.1021/acs.analchem.5b03147] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This paper presents a microfluidic device for electrical discrimination of circulating tumor cells (CTCs) using graphene nanoplates (GNPs) as a highly conductive material bound to the cell surface. For two-step cascade discrimination, the microfluidic device is composed of a CTC-enrichment device and an impedance cytometry. Using lateral magnetophoresis, the CTC-enrichment device enriches rare CTCs from millions of background blood cells. Then, the impedance cytometry electrically identifies CTCs from the enriched sample, containing CTCs and persistent residual blood cells, based on the electrical impedance of CTCs modified by the GNPs. GNPs were used as a highly conductive material for modifying surface conductivity of CTCs, thereby improving the accuracy of electrical discrimination. The experimental results showed that a colorectal cancer cell line (DLD-1) spiked into peripheral blood was enriched by nearly 500-fold by the CTC-enrichment device. The phase of the electrical signal measured from DLD-1 cells covered by GNPs shifted by about 100° in comparison with that from normal blood cells, which allows the impedance cytometry to identify CTCs at a rate of 94% from the enriched samples.
Collapse
Affiliation(s)
- Song-I Han
- Department of Nano Science and Engineering, Center for Nano Manufacturing, Inje University , 607 Obang-dong, Gimhae, Gyongnam 621-749, Republic of Korea
| | - Ki-Ho Han
- Department of Nano Science and Engineering, Center for Nano Manufacturing, Inje University , 607 Obang-dong, Gimhae, Gyongnam 621-749, Republic of Korea
| |
Collapse
|
48
|
Langlois PJ, Neshatvar N, Demosthenous A. A Sinusoidal Current Driver With an Extended Frequency Range and Multifrequency Operation for Bioimpedance Applications. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2015; 9:401-411. [PMID: 25148669 DOI: 10.1109/tbcas.2014.2332136] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This paper describes an alternative sinusoidal current driver suitable for bioimpedance applications where high frequency operation is required. The circuit is based on a transconductor and provides current outputs with low phase error for frequencies around its pole frequency. This extends the upper frequency operational limit of the current driver. Multifrequency currents can be generated where each individual frequency is phase corrected. Analysis of the circuit is presented together with simulation and experimental results which demonstrate the proof of concept for both single and dual frequency current drivers. Measurements on a discrete test version of the circuit demonstrate a phase reduction from 25° to 4° at 3 MHz for 2 mAp-p output current. The output impedance of the current driver is essentially constant at about 1.1 M Ω over a frequency range of 100 kHz to 5 MHz due to the introduction of the phase compensation. The compensation provides a bandwidth increase of a factor of about six for a residual phase delay of 4°.
Collapse
|
49
|
Zhang X, Chatwin C, Barber DC. A feasibility study of a rotary planar electrode array for electrical impedance mammography using a digital breast phantom. Physiol Meas 2015; 36:1311-35. [DOI: 10.1088/0967-3334/36/6/1311] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
50
|
Zhang X, Wang W, Sze G, Barber D, Chatwin C. An image reconstruction algorithm for 3-D electrical impedance mammography. IEEE TRANSACTIONS ON MEDICAL IMAGING 2014; 33:2223-2241. [PMID: 25014954 DOI: 10.1109/tmi.2014.2334475] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The Sussex MK4 electrical impedance mammography system is especially designed for 3-D breast screening. It aims to diagnose breast cancer at an early stage when it is most treatable. Planar electrodes are employed in this system. The challenge with planar electrodes is the inaccuracy and poor sensitivity in the vertical direction for 3-D imaging. An enhanced image reconstruction algorithm using a duo-mesh method is proposed to improve the vertical accuracy and sensitivity. The novel part of the enhanced image reconstruction algorithm is the correction term. To evaluate the new algorithm, an image processing based error analysis method is presented, which not only can precisely assess the error of the reconstructed image but also locate the center and outline the center and outline the shape of the objects of interest. Although the enhanced image reconstruction algorithm and the image processing based error analysis method are designed for the Sussex MK4 system, they are applicable to all electrical impedance tomography systems, regardless of the hardware design. To validate the enhanced algorithm, performance results from simulations, phantoms and patients are presented.
Collapse
|