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Arangath A, Duffy N, Alexandrov S, James S, Neuhaus K, Murphy M, Leahy M. Nanosensitive optical coherence tomography for detecting structural changes in stem cells. BIOMEDICAL OPTICS EXPRESS 2023; 14:1411-1427. [PMID: 37078060 PMCID: PMC10110307 DOI: 10.1364/boe.485082] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/04/2023] [Accepted: 02/19/2023] [Indexed: 05/03/2023]
Abstract
Mesenchymal stromal cells (MSCs) are adult stem cells that have been widely investigated for their potential to regenerate damaged and diseased tissues. Multiple pre-clinical studies and clinical trials have demonstrated a therapeutic response following treatment with MSCs for various pathologies, including cardiovascular, neurological and orthopaedic diseases. The ability to functionally track cells following administration in vivo is pivotal to further elucidating the mechanism of action and safety profile of these cells. Effective monitoring of MSCs and MSC-derived microvesicles requires an imaging modality capable of providing both quantitative and qualitative readouts. Nanosensitive optical coherence tomography (nsOCT) is a recently developed technique that detects nanoscale structural changes within samples. In this study, we demonstrate for the first time, the capability of nsOCT to image MSC pellets following labelling with different concentrations of dual plasmonic gold nanostars. We show that the mean spatial period of MSC pellets increases following the labelling with increasing concentrations of nanostars. Additionally, with the help of extra time points and a more comprehensive analysis, we further improved the understanding of the MSC pellet chondrogenesis model. Despite the limited penetration depth (similar to conventional OCT), the nsOCT is highly sensitive in detecting structural alterations at the nanoscale, which may provide crucial functional information about cell therapies and their modes of action.
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Affiliation(s)
- Anand Arangath
- Tissue Optics and Microcirculation Imaging Facility, Physics, School of Natural Sciences, University of Galway, Galway, Ireland
| | - Niamh Duffy
- Regenerative Medicine Institute, University of Galway, Galway, Ireland
| | - Sergey Alexandrov
- Tissue Optics and Microcirculation Imaging Facility, Physics, School of Natural Sciences, University of Galway, Galway, Ireland
| | - Soorya James
- Tissue Optics and Microcirculation Imaging Facility, Physics, School of Natural Sciences, University of Galway, Galway, Ireland
| | - Kai Neuhaus
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Mary Murphy
- Regenerative Medicine Institute, University of Galway, Galway, Ireland
| | - Martin Leahy
- Tissue Optics and Microcirculation Imaging Facility, Physics, School of Natural Sciences, University of Galway, Galway, Ireland
- The Institute of Photonic Sciences (ICFO), Barcelona, Spain
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Urbanowicz T, Michalak M, Marzec E, Komosa A, Filipiak KJ, Olasińska-Wiśniewska A, Witkowska A, Rodzki M, Tykarski A, Jemielity M. Coronary Artery Disease and Inflammatory Activation Interfere with Peripheral Tissue Electrical Impedance Spectroscopy Characteristics-Initial Report. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20032745. [PMID: 36768108 PMCID: PMC9915397 DOI: 10.3390/ijerph20032745] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 01/29/2023] [Accepted: 01/30/2023] [Indexed: 05/31/2023]
Abstract
BACKGROUND The electrical properties of cells and tissues in relation to energy exposure have been investigated, presenting their resistance and capacitance characteristics. The dielectric response to radiofrequency fields exhibits polarization heterogeneity under pathological conditions. The aim of the study was to analyze the differences in changes in resistance and capacitance measurements in the range from 1 kHz to 1 MHz, combined with an assessment of the correlation between the results of electrical impedance spectroscopy (EIS) and inflammatory activation. METHODS In the prospective study, EIS was performed on the non-dominant arm in 29 male patients (median (Q1-Q3) age of 69 (65-72)) with complex coronary artery disease and 10 male patients (median (Q1-Q3) age of 66 (62-69)) of the control group. Blood samples were collected for inflammatory index analysis. RESULTS The logistic regression analysis revealed a negative correlation with inflammatory indexes, including neutrophil to lymphocyte ratio (NLR) in the CAD group in the frequency of 30 kHz (p = 0.038, r = -0.317) regarding EIS resistance measurements and a positive correlation in CAD group in the frequency of 10 kHz (p = 0.029, r = -0.354) regarding EIS capacitance. CONCLUSIONS The bioelectric characteristics of peripheral tissues measured by resistance and capacitance in EIS differ in patients with coronary artery disease and in the control group. Electrical impedance spectroscopy reveals a statistically significant correlation with inflammatory markers in patients with CAD.
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Affiliation(s)
- Tomasz Urbanowicz
- Cardiac Surgery and Transplantology Department, Poznan University of Medical Sciences, 61-848 Poznan, Poland
| | - Michał Michalak
- Department of Computer Science and Statistics, Poznan University of Medical Sciences, 60-806 Poznan, Poland
| | - Ewa Marzec
- Department of Bionics and Experimental Medical Biology, Poznan University of Medical Sciences, 60-775 Poznan, Poland
| | - Anna Komosa
- Department of Hypertensiology, Angiology and Internal Medicine, Poznań University of Medical Sciences, 61-848 Poznan, Poland
| | - Krzysztof J. Filipiak
- Institute of Clinical Science, Maria Sklodowska-Curie Medical Academy, 00-136 Warsaw, Poland
| | - Anna Olasińska-Wiśniewska
- Cardiac Surgery and Transplantology Department, Poznan University of Medical Sciences, 61-848 Poznan, Poland
| | - Anna Witkowska
- Cardiac Surgery and Transplantology Department, Poznan University of Medical Sciences, 61-848 Poznan, Poland
| | - Michał Rodzki
- Cardiac Surgery and Transplantology Department, Poznan University of Medical Sciences, 61-848 Poznan, Poland
| | - Andrzej Tykarski
- Department of Hypertensiology, Angiology and Internal Medicine, Poznań University of Medical Sciences, 61-848 Poznan, Poland
| | - Marek Jemielity
- Cardiac Surgery and Transplantology Department, Poznan University of Medical Sciences, 61-848 Poznan, Poland
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Bory Prevez H, Soutelo Jimenez AA, Roca Oria EJ, Heredia Kindelán JA, Morales González M, Villar Goris NA, Hernández Mesa N, Sierra González VG, Infantes Frometa Y, Montijano JI, Cabrales LEB. Simulations of surface charge density changes during the untreated solid tumour growth. ROYAL SOCIETY OPEN SCIENCE 2022; 9:220552. [PMID: 36465673 PMCID: PMC9709566 DOI: 10.1098/rsos.220552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 11/10/2022] [Indexed: 06/17/2023]
Abstract
Understanding untreated tumour growth kinetics and its intrinsic behaviour is interesting and intriguing. The aim of this study is to propose an approximate analytical expression that allows us to simulate changes in surface charge density at the cancer-surrounding healthy tissue interface during the untreated solid tumour growth. For this, the Gompertz and Poisson equations are used. Simulations reveal that the unperturbed solid tumour growth is closely related to changes in the surface charge density over time between the tumour and the surrounding healthy tissue. Furthermore, the unperturbed solid tumour growth is governed by temporal changes in this surface charge density. It is concluded that results corroborate the correspondence between the electrical and physiological parameters in the untreated cancer, which may have an essential role in its growth, progression, metastasis and protection against immune system attack and anti-cancer therapies. In addition, the knowledge of surface charge density changes at the cancer-surrounding healthy tissue interface may be relevant when redesigning the molecules in chemotherapy and immunotherapy taking into account their polarities. This can also be true in the design of completely novel therapies.
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Affiliation(s)
- Henry Bory Prevez
- Departamento de Control Automático, Facultad de Ingeniería Eléctrica, Universidad de Oriente, Santiago de Cuba, Cuba
| | | | - Eduardo José Roca Oria
- Departamento de Física, Facultad de Ciencias Naturales y Exactas, Universidad de Oriente, Santiago de Cuba, Cuba
| | | | - Maraelys Morales González
- Departamento de Farmacia, Facultad de Ciencias Naturales y Exactas, Universidad de Oriente, Santiago de Cuba, Cuba
| | - Narciso Antonio Villar Goris
- Departamento de Ciencia e Innovación, Centro Nacional de Electromagnetismo Aplicado, Universidad de Oriente, Santiago de Cuba, Cuba
- Universidad Autónoma de Santo Domingo, Santo Domingo, República Dominicana
| | | | | | | | - Juan Ignacio Montijano
- Departamento de Matemática Aplicada, Instituto Universitario de Matemática y Aplicaciones, Universidad de Zaragoza, Zaragoza, España
| | - Luis Enrique Bergues Cabrales
- Departamento de Ciencia e Innovación, Centro Nacional de Electromagnetismo Aplicado, Universidad de Oriente, Santiago de Cuba, Cuba
- Departamento de Matemática Aplicada, Instituto Universitario de Matemática y Aplicaciones, Universidad de Zaragoza, Zaragoza, España
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Universal Markers Unveil Metastatic Cancerous Cross-Sections at Nanoscale. Cancers (Basel) 2022; 14:cancers14153728. [PMID: 35954392 PMCID: PMC9367376 DOI: 10.3390/cancers14153728] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 11/25/2022] Open
Abstract
Simple Summary We propose the use of two universal morphometric indices whose synergetic potency leads to the classification of a cancerous tissue of a few nanometers in size as metastatic or non-metastatic. The method is label-free, operates on conventional histological cross-sections, recording surface height–height roughness by AFM, and detects nanoscale changes associated with the progress of carcinogenesis which are the output of combined statistical approaches, namely multifractal analysis and the generalized moments method. The benefit of this approach is at least two-fold. On the one hand, its application in the context of early diagnosis can increase the life expectancy of patients, and on the other hand, differentiation between metastatic and non-metastatic tissues at the singular cell level can lead to new methodologies to treat cancer biology and therapies. Abstract The characterization of cancer histological sections as metastatic, M, or not-metastatic, NM, at the cellular size level is important for early diagnosis and treatment. We present timely warning markers of metastasis, not identified by existing protocols and used methods. Digitized atomic force microscopy images of human histological cross-sections of M and NM colorectal cancer cells were analyzed by multifractal detrended fluctuation analysis and the generalized moments method analysis. Findings emphasize the multifractal character of all samples and accentuate room for the differentiation of M from NM cross-sections. Two universal markers emphatically achieve this goal performing very well: (a) the ratio of the singularity parameters (left/right), which are defined relative to weak/strong fluctuations in the multifractal spectrum, is always greater than 0.8 for NM tissues; and (b) the index of multifractality, used to classify universal multifractals, points to log-normal distribution for NM and to log-Cauchy for M tissues. An immediate large-scale screening of cancerous sections is doable based on these findings.
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Wang A, Qi W, Gao T, Tang X. Molecular Contrast Optical Coherence Tomography and Its Applications in Medicine. Int J Mol Sci 2022; 23:ijms23063038. [PMID: 35328454 PMCID: PMC8949853 DOI: 10.3390/ijms23063038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/05/2022] [Accepted: 03/08/2022] [Indexed: 12/28/2022] Open
Abstract
The growing need to understand the molecular mechanisms of diseases has prompted the revolution in molecular imaging techniques along with nanomedicine development. Conventional optical coherence tomography (OCT) is a low-cost in vivo imaging modality that provides unique high spatial and temporal resolution anatomic images but little molecular information. However, given the widespread adoption of OCT in research and clinical practice, its robust molecular imaging extensions are strongly desired to combine with anatomical images. A range of relevant approaches has been reported already. In this article, we review the recent advances of molecular contrast OCT imaging techniques, the corresponding contrast agents, especially the nanoparticle-based ones, and their applications. We also summarize the properties, design criteria, merit, and demerit of those contrast agents. In the end, the prospects and challenges for further research and development in this field are outlined.
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