1
|
Gant KL, Patankar MS, Campagnola PJ. A Perspective Review: Analyzing Collagen Alterations in Ovarian Cancer by High-Resolution Optical Microscopy. Cancers (Basel) 2024; 16:1560. [PMID: 38672642 PMCID: PMC11048585 DOI: 10.3390/cancers16081560] [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: 01/10/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
High-grade serous ovarian cancer (HGSOC) is the predominant subtype of ovarian cancer (OC), occurring in more than 80% of patients diagnosed with this malignancy. Histological and genetic analysis have confirmed the secretory epithelial of the fallopian tube (FT) as a major site of origin of HGSOC. Although there have been significant strides in our understanding of this disease, early stage detection and diagnosis are still rare. Current clinical imaging modalities lack the ability to detect early stage pathogenesis in the fallopian tubes and the ovaries. However, there are several microscopic imaging techniques used to analyze the structural modifications in the extracellular matrix (ECM) protein collagen in ex vivo FT and ovarian tissues that potentially can be modified to fit the clinical setting. In this perspective, we evaluate and compare the myriad of optical tools available to visualize these alterations and the invaluable insights these data provide on HGSOC initiation. We also discuss the clinical implications of these findings and how these data may help novel tools for early diagnosis of HGSOC.
Collapse
Affiliation(s)
- Kristal L. Gant
- Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI 53706, USA;
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Manish S. Patankar
- Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI 53706, USA;
- Carbone Cancer Center, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Paul J. Campagnola
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
- Carbone Cancer Center, University of Wisconsin-Madison, Madison, WI 53706, USA
| |
Collapse
|
2
|
Guimarães P, Morgado M, Batista A. On the quantitative analysis of lamellar collagen arrangement with second-harmonic generation imaging. BIOMEDICAL OPTICS EXPRESS 2024; 15:2666-2680. [PMID: 38633085 PMCID: PMC11019681 DOI: 10.1364/boe.516817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 04/19/2024]
Abstract
Second harmonic generation (SHG) allows for the examination of collagen structure in collagenous tissues. Collagen is a fibrous protein found in abundance in the human body, present in bones, cartilage, the skin, and the cornea, among other areas, providing structure, support, and strength. Its structural arrangement is deeply intertwined with its function. For instance, in the cornea, alterations in collagen organization can result in severe visual impairments. Using SHG imaging, various metrics have demonstrated the potential to study collagen organization. The discrimination between healthy, keratoconus, and crosslinked corneas, assessment of injured tendons, or the characterization of breast and ovarian tumorous tissue have been demonstrated. Nevertheless, these metrics have not yet been objectively evaluated or compared. A total of five metrics were identified and implemented from the literature, and an additional approach adapted from texture analysis was proposed. In this study, we analyzed their effectiveness on a ground-truth set of artificially generated fibrous images. Our investigation provides the first comprehensive assessment of the performance of multiple metrics, identifying both the strengths and weaknesses of each approach and providing valuable insights for future applications of SHG imaging in medical diagnostics and research.
Collapse
Affiliation(s)
- Pedro Guimarães
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), Institute for Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Coimbra, Portugal
| | - Miguel Morgado
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), Institute for Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Coimbra, Portugal
- Department of Physics, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Ana Batista
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), Institute for Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Coimbra, Portugal
- Department of Physics, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
- Centre for Innovative Biomedicine and Biotechnology (CIBB), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| |
Collapse
|
3
|
Biswas A, Ng BH, Prabhakaran VS, Chan CJ. Squeezing the eggs to grow: The mechanobiology of mammalian folliculogenesis. Front Cell Dev Biol 2022; 10:1038107. [PMID: 36531957 PMCID: PMC9756970 DOI: 10.3389/fcell.2022.1038107] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/16/2022] [Indexed: 08/25/2023] Open
Abstract
The formation of functional eggs (oocyte) in ovarian follicles is arguably one of the most important events in early mammalian development since the oocytes provide the bulk genetic and cytoplasmic materials for successful reproduction. While past studies have identified many genes that are critical to normal ovarian development and function, recent studies have highlighted the role of mechanical force in shaping folliculogenesis. In this review, we discuss the underlying mechanobiological principles and the force-generating cellular structures and extracellular matrix that control the various stages of follicle development. We also highlight emerging techniques that allow for the quantification of mechanical interactions and follicular dynamics during development, and propose new directions for future studies in the field. We hope this review will provide a timely and useful framework for future understanding of mechano-signalling pathways in reproductive biology and diseases.
Collapse
Affiliation(s)
- Arikta Biswas
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Boon Heng Ng
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | | | - Chii Jou Chan
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| |
Collapse
|
4
|
Tilbury K, Han X, Brooks PC, Khalil A. Multiscale anisotropy analysis of second-harmonic generation collagen imaging of mouse skin. JOURNAL OF BIOMEDICAL OPTICS 2021; 26:JBO-210044R. [PMID: 34159763 PMCID: PMC8217961 DOI: 10.1117/1.jbo.26.6.065002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 04/19/2021] [Indexed: 06/13/2023]
Abstract
SIGNIFICANCE Morphological collagen signatures are important for tissue function, particularly in the tumor microenvironment. A single algorithmic framework with quantitative, multiscale morphological collagen feature extraction may further the use of collagen signatures in understanding fundamental tumor progression. AIM A modification of the 2D wavelet transform modulus maxima (WTMM) anisotropy method was applied to both digitally simulated collagen fibers and second-harmonic-generation imaged collagen fibers of mouse skin to calculate a multiscale anisotropy factor to detect collagen fiber organization. APPROACH The modified 2D WTMM anisotropy method was initially validated on synthetic calibration images to establish the robustness and sensitivity of the multiscale fiber organization tool. Upon validation, the algorithm was applied to collagen fiber organization in normal wild-type skin, melanoma stimulated skin, and integrin α10KO skin. RESULTS Normal wild-type skin collagen fibers have an increased anisotropy factor at all sizes scales. Interestingly, the multiscale anisotropy differences highlight important dissimilarities between collagen fiber organization in normal wild-type skin, melanoma stimulated, and integrin α10KO skin. At small scales (∼2 to 3 μm), the integrin α10KO skin was vastly different than normal skin (p-value ∼ 10 - 8), whereas the melanoma stimulated skin was vastly different than normal at large scales (∼30 to 40 μm, p-value ∼ 10 - 15). CONCLUSIONS This objective computational collagen fiber organization algorithm is sensitive to collagen fiber organization across multiple scales for effective exploration of collagen morphological alterations associated with melanoma and the lack of α10 integrin binding.
Collapse
Affiliation(s)
- Karissa Tilbury
- University of Maine, Chemical and Biomedical Engineering, Orono, Maine, United States
| | - XiangHua Han
- Maine Medical Center Research Institute, Scarborough, Maine, United States
| | - Peter C. Brooks
- Maine Medical Center Research Institute, Scarborough, Maine, United States
| | - Andre Khalil
- University of Maine, Chemical and Biomedical Engineering, Orono, Maine, United States
- University of Maine, CompuMAINE Lab., Orono, Maine, United States
| |
Collapse
|
5
|
Jyothsna KM, Sarkar P, Jha KK, A S LK, Raghunathan V, Bhat R. A biphasic response of polymerized Type 1 collagen architectures to dermatan sulfate. J Biomed Mater Res A 2021; 109:1646-1656. [PMID: 33687134 DOI: 10.1002/jbm.a.37160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 01/31/2021] [Accepted: 02/10/2021] [Indexed: 12/24/2022]
Abstract
Collagen I, the most abundant extracellular matrix (ECM) protein in vertebrate tissues provides mechanical durability to tissue microenvironments and regulates cell function. Its fibrillogenesis in biological milieu is predominantly regulated by dermatan sulfate proteoglycans, proteins conjugated with iduronic acid-containing dermatan sulfate (DS) glycosaminoglycans (GAG). Although DS is known to regulate tissue function through its modulation of Coll I architecture, a precise understanding of the latter remains elusive. We investigated this problem by visualizing the fibrillar pattern of fixed Coll I gels polymerized in the presence of varying concentrations of DS using second harmonic generation microscopy. Measuring mean second harmonic generation signal (which estimates the ordering of the fibrils), and surface occupancy (which estimates the space occupied by fibrils) supported by confocal reflectance microscopy, our observations indicated that the effect on fibril pattern of DS is contextual upon the latter's concentrations: Lower levels of DS resulted in sparse disorganized fibrils; higher levels restore organization, with fibrils occupying greater space. An appropriate change in elasticity as a result of DS levels was also observed through atomic force microscopy. Examination of dye-based GAG staining and scanning electron microscopy suggested distinct constitutions of Coll I gels when polymerized with higher and lower levels of DS. We observed that adhesion of the invasive ovarian cancer cells SKOV3 decreased for lower DS levels but was partially restored at higher DS levels. Our study shows how the Coll I gel pattern-tuning of DS is of relevance for understanding its biomaterial applications and possibly, pathophysiological functions.
Collapse
Affiliation(s)
- Konkada Manattayil Jyothsna
- Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore, Karnataka, India
| | - Purba Sarkar
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, Karnataka, India
| | - Keshav Kumar Jha
- Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore, Karnataka, India.,Department of Functional Interfaces, Leibniz Institute of Photonic Technology, Jena, Germany
| | - Lal Krishna A S
- Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore, Karnataka, India
| | - Varun Raghunathan
- Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore, Karnataka, India
| | - Ramray Bhat
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, Karnataka, India
| |
Collapse
|
6
|
Wang G, Sun Y, Chen Y, Gao Q, Peng D, Lin H, Zhan Z, Liu Z, Zhuo S. Rapid identification of human ovarian cancer in second harmonic generation images using radiomics feature analyses and tree-based pipeline optimization tool. JOURNAL OF BIOPHOTONICS 2020; 13:e202000050. [PMID: 32500634 DOI: 10.1002/jbio.202000050] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/15/2020] [Accepted: 05/28/2020] [Indexed: 06/11/2023]
Abstract
Ovarian cancer is currently one of the most common cancers of the female reproductive organs, and its mortality rate is the highest among all types of gynecologic cancers. Rapid and accurate classification of ovarian cancer plays an important role in the determination of treatment plans and prognoses. Nevertheless, the most commonly used classification method is based on histopathological specimen examination, which is time-consuming and labor-intensive. Thus, in this study, we utilize radiomics feature extraction methods and the automated machine learning tree-based pipeline optimization tool (TOPT) for analysis of 3D, second harmonic generation images of benign, malignant and normal human ovarian tissues, to develop a high-efficiency computer-aided diagnostic model. Area under the receiver operating characteristic curve values of 0.98, 0.96 and 0.94 were obtained, respectively, for the classification of the three tissue types. Furthermore, this approach can be readily applied to other related tissues and diseases, and has great potential for improving the efficiency of medical diagnostic processes.
Collapse
Affiliation(s)
- Guangxing Wang
- School of Science, Jimei University, Xiamen, Fujian, China
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education & Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| | - Yang Sun
- Department of Gynecology, Fujian Cancer Hospital, Affiliated Cancer Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Youting Chen
- Department of Hepatopancreatobiliary Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Qiqi Gao
- Department of Gynecology, Fujian Cancer Hospital, Affiliated Cancer Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Dongqing Peng
- School of Science, Jimei University, Xiamen, Fujian, China
| | - Hongxin Lin
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education & Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| | - Zhenlin Zhan
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education & Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| | - Zhiyi Liu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou Zhejiang, China
| | - Shuangmu Zhuo
- School of Science, Jimei University, Xiamen, Fujian, China
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education & Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, Fujian, China
| |
Collapse
|
7
|
Lim H. Harmonic Generation Microscopy 2.0: New Tricks Empowering Intravital Imaging for Neuroscience. Front Mol Biosci 2019; 6:99. [PMID: 31649934 PMCID: PMC6794408 DOI: 10.3389/fmolb.2019.00099] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 09/17/2019] [Indexed: 01/08/2023] Open
Abstract
Optical harmonic generation, e.g., second- (SHG) and third-harmonic generation (THG), provides intrinsic contrasts for three-dimensional intravital microscopy. Contrary to two-photon excited fluorescence (TPEF), however, they have found relatively specialized applications, such as imaging collagenous and non-specific tissues, respectively. Here we review recent advances that broaden the capacity of SHG and THG for imaging the central nervous system in particular. The fundamental contrast mechanisms are reviewed as they encode novel information including molecular origin, spectroscopy, functional probes, and image analysis, which lay foundations for promising future applications in neuroscience.
Collapse
Affiliation(s)
- Hyungsik Lim
- Department of Physics and Astronomy, Hunter College and the Graduate Center of the City University of New York, New York, NY, United States
| |
Collapse
|
8
|
Dudenkova VV, Shirmanova MV, Lukina MM, Feldshtein FI, Virkin A, Zagainova EV. Examination of Collagen Structure and State by the Second Harmonic Generation Microscopy. BIOCHEMISTRY (MOSCOW) 2019; 84:S89-S107. [DOI: 10.1134/s0006297919140062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
9
|
Tilbury KB, Campbell KR, Eliceiri KW, Salih SM, Patankar M, Campagnola PJ. Stromal alterations in ovarian cancers via wavelength dependent Second Harmonic Generation microscopy and optical scattering. BMC Cancer 2017; 17:102. [PMID: 28166758 PMCID: PMC5294710 DOI: 10.1186/s12885-017-3090-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 01/26/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Ovarian cancer remains the most deadly gynecological cancer with a poor aggregate survival rate; however, the specific rates are highly dependent on the stage of the disease upon diagnosis. Current screening and imaging tools are insufficient to detect early lesions and are not capable of differentiating the subtypes of ovarian cancer that may benefit from specific treatments. METHOD As an alternative to current screening and imaging tools, we utilized wavelength dependent collagen-specific Second Harmonic Generation (SHG) imaging microscopy and optical scattering measurements to probe the structural differences in the extracellular matrix (ECM) of normal stroma, benign tumors, endometrioid tumors, and low and high-grade serous tumors. RESULTS The SHG signatures of the emission directionality and conversion efficiency as well as the optical scattering are related to the organization of collagen on the sub-micron size scale and encode structural information. The wavelength dependence of these readouts adds additional characterization of the size and distribution of collagen fibrils/fibers relative to the interrogating wavelengths. We found a strong wavelength dependence of these metrics that are related to significant structural differences in the collagen organization and are consistent with the dualistic classification of type I and II serous tumors. Moreover, type I endometrioid tumors have strongly differing ECM architecture than the serous malignancies. The SHG metrics and optical scattering measurements were used to form a linear discriminant model to classify the tissues, and we obtained high accuracy (>90%) between high-grade serous tumors from the other tissue types. High-grade serous tumors account for ~70% of ovarian cancers, and this delineation has potential clinical applications in terms of supplementing histological analysis, understanding the etiology, as well as development of an in vivo screening tool. CONCLUSIONS SHG and optical scattering measurements provide sub-resolution information and when combined provide superior diagnostic power over clinical imaging modalities. Additionally the measurements are able to delineate the different subtypes of ovarian cancer and may potentially assist in treatment protocols. Understanding the altered collagen assembly can supplement histological analysis and provide new insight into the etiology. These methods could become an in vivo screening tool for earlier detection which is important since ovarian malignancies can metastasize while undetectable by current clinical imaging resolution.
Collapse
Affiliation(s)
- Karissa B Tilbury
- Laboratory for Optical and Computational Instrumentation, Department of Biomedical Engineering, University of Wisconsin - Madison, 1550 Engineering Drive, Madison, WI, 53706, USA
| | - Kirby R Campbell
- Laboratory for Optical and Computational Instrumentation, Department of Biomedical Engineering, University of Wisconsin - Madison, 1550 Engineering Drive, Madison, WI, 53706, USA
| | - Kevin W Eliceiri
- Laboratory for Optical and Computational Instrumentation, Department of Biomedical Engineering, University of Wisconsin - Madison, 1550 Engineering Drive, Madison, WI, 53706, USA.,Medical Physics Department, University of Wisconsin - Madison, 1111 Highland Avenue, Madison, WI, 53706, USA.,Morgridge Institute for Research, 330 N. Orchard Street, Madison, WI, 53715, USA
| | - Sana M Salih
- Department of Obstetrics and Gynecology, University of Wisconsin - Madison, 600 Highland Avenue, Madison, WI, 53706, USA
| | - Manish Patankar
- Department of Obstetrics and Gynecology, University of Wisconsin - Madison, 600 Highland Avenue, Madison, WI, 53706, USA
| | - Paul J Campagnola
- Laboratory for Optical and Computational Instrumentation, Department of Biomedical Engineering, University of Wisconsin - Madison, 1550 Engineering Drive, Madison, WI, 53706, USA. .,Medical Physics Department, University of Wisconsin - Madison, 1111 Highland Avenue, Madison, WI, 53706, USA.
| |
Collapse
|
10
|
Zeitoune AA, Luna JS, Salas KS, Erbes L, Cesar CL, Andrade LA, Carvahlo HF, Bottcher-Luiz F, Casco VH, Adur J. Epithelial Ovarian Cancer Diagnosis of Second-Harmonic Generation Images: A Semiautomatic Collagen Fibers Quantification Protocol. Cancer Inform 2017; 16:1176935117690162. [PMID: 28469386 PMCID: PMC5392028 DOI: 10.1177/1176935117690162] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 01/02/2017] [Indexed: 11/20/2022] Open
Abstract
A vast number of human pathologic conditions are directly or indirectly related to tissular collagen structure remodeling. The nonlinear optical microscopy second-harmonic generation has become a powerful tool for imaging biological tissues with anisotropic hyperpolarized structures, such as collagen. During the past years, several quantification methods to analyze and evaluate these images have been developed. However, automated or semiautomated solutions are necessary to ensure objectivity and reproducibility of such analysis. This work describes automation and improvement methods for calculating the anisotropy (using fast Fourier transform analysis and the gray-level co-occurrence matrix). These were applied to analyze biopsy samples of human ovarian epithelial cancer at different stages of malignancy (mucinous, serous, mixed, and endometrial subtypes). The semiautomation procedure enabled us to design a diagnostic protocol that recognizes between healthy and pathologic tissues, as well as between different tumor types.
Collapse
Affiliation(s)
- Angel A Zeitoune
- Biofotónica y Procesamiento de Información Biológica (ByPIB), Centro de Investigación y Transferencia de Entre Ríos (CITER), CONICET-UNER, Entre Ríos, Argentina.,Microscopy Laboratory Applied to Molecular and Cellular Studies, Engineering School, National University of Entre Ríos, Entre Ríos, Argentina
| | - Johana Sj Luna
- Laboratory Applied to Non-Ionizing Radiation, Engineering School, National University of Entre Ríos, Entre Ríos, Argentina
| | - Kynthia Sanchez Salas
- Laboratory Applied to Non-Ionizing Radiation, Engineering School, National University of Entre Ríos, Entre Ríos, Argentina
| | - Luciana Erbes
- Biofotónica y Procesamiento de Información Biológica (ByPIB), Centro de Investigación y Transferencia de Entre Ríos (CITER), CONICET-UNER, Entre Ríos, Argentina.,Microscopy Laboratory Applied to Molecular and Cellular Studies, Engineering School, National University of Entre Ríos, Entre Ríos, Argentina
| | - Carlos L Cesar
- National Institute of Science and Technology on Photonics Applied to Cell Biology (INFABiC), São Paulo, Brazil.,Department of Physics, Federal University of Ceará (UFC), Fortaleza, Brazil
| | - Liliana Ala Andrade
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), São Paulo, Brazil
| | - Hernades F Carvahlo
- National Institute of Science and Technology on Photonics Applied to Cell Biology (INFABiC), São Paulo, Brazil.,Department of Structural and Functional Biology, Biology Institute, State University of Campinas (UNICAMP), São Paulo, Brazil
| | - Fátima Bottcher-Luiz
- National Institute of Science and Technology on Photonics Applied to Cell Biology (INFABiC), São Paulo, Brazil.,Department of Pathology of the Faculty of Medical Sciences, State University of Campinas (UNICAMP), São Paulo, Brazil
| | - Victor H Casco
- Microscopy Laboratory Applied to Molecular and Cellular Studies, Engineering School, National University of Entre Ríos, Entre Ríos, Argentina
| | - Javier Adur
- Biofotónica y Procesamiento de Información Biológica (ByPIB), Centro de Investigación y Transferencia de Entre Ríos (CITER), CONICET-UNER, Entre Ríos, Argentina.,Microscopy Laboratory Applied to Molecular and Cellular Studies, Engineering School, National University of Entre Ríos, Entre Ríos, Argentina.,Laboratory Applied to Non-Ionizing Radiation, Engineering School, National University of Entre Ríos, Entre Ríos, Argentina
| |
Collapse
|
11
|
Bochner F, Fellus-Alyagor L, Kalchenko V, Shinar S, Neeman M. A Novel Intravital Imaging Window for Longitudinal Microscopy of the Mouse Ovary. Sci Rep 2015. [PMID: 26207832 PMCID: PMC4513547 DOI: 10.1038/srep12446] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The ovary is a dynamic organ that undergoes dramatic remodeling throughout the ovulatory cycle. Maturation of the ovarian follicle, release of the oocyte in the course of ovulation as well as formation and degradation of corpus luteum involve tightly controlled remodeling of the extracellular matrix and vasculature. Ovarian tumors, regardless of their tissue of origin, dynamically interact with the ovarian microenvironment. Their activity in the tissue encompasses recruitment of host stroma and immune cells, attachment of tumor cells to mesothelial layer, degradation of the extracellular matrix and tumor cell migration. High-resolution dynamic imaging of such processes is particularly challenging for internal organs. The implementation of a novel imaging window as reported here enabled longitudinal microscopy of ovarian physiology and orthotopic tumor invasion.
Collapse
Affiliation(s)
- Filip Bochner
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100 Israel
| | - Liat Fellus-Alyagor
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100 Israel
| | | | - Shiri Shinar
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100 Israel
| | - Michal Neeman
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 76100 Israel
| |
Collapse
|
12
|
Tilbury K, Campagnola PJ. Applications of second-harmonic generation imaging microscopy in ovarian and breast cancer. PERSPECTIVES IN MEDICINAL CHEMISTRY 2015; 7:21-32. [PMID: 25987830 PMCID: PMC4403703 DOI: 10.4137/pmc.s13214] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/01/2015] [Accepted: 03/03/2015] [Indexed: 11/23/2022]
Abstract
In this perspective, we discuss how the nonlinear optical technique of second-harmonic generation (SHG) microscopy has been used to greatly enhance our understanding of the tumor microenvironment (TME) of breast and ovarian cancer. Striking changes in collagen architecture are associated with these epithelial cancers, and SHG can image these changes with great sensitivity and specificity with submicrometer resolution. This information has not historically been exploited by pathologists but has the potential to enhance diagnostic and prognostic capabilities. We summarize the utility of image processing tools that analyze fiber morphology in SHG images of breast and ovarian cancer in human tissues and animal models. We also describe methods that exploit the SHG physical underpinnings that are effective in delineating normal and malignant tissues. First we describe the use of polarization-resolved SHG that yields metrics related to macromolecular and supramolecular structures. The coherence and corresponding phase-matching process of SHG results in emission directionality (forward to backward), which is related to sub-resolution fibrillar assembly. These analyses are more general and more broadly applicable than purely morphology-based analyses; however, they are more computationally intensive. Intravital imaging techniques are also emerging that incorporate all of these quantitative analyses. Now, all these techniques can be coupled with rapidly advancing miniaturization of imaging systems to afford their use in clinical situations including enhancing pathology analysis and also in assisting in real-time surgical determination of tumor margins.
Collapse
Affiliation(s)
- Karissa Tilbury
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Paul J Campagnola
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA. ; Medical Physics Department, University of Wisconsin-Madison, Madison, WI, USA
| |
Collapse
|
13
|
Keikhosravi A, Bredfeldt JS, Sagar AK, Eliceiri KW. Second-harmonic generation imaging of cancer. Methods Cell Biol 2015; 123:531-46. [PMID: 24974046 DOI: 10.1016/b978-0-12-420138-5.00028-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The last 30 years has seen great advances in optical microscopy with the introduction of sophisticated fluorescence-based imaging methods such as confocal and multiphoton laser scanning microscopy. There is increasing interest in using these methods to quantitatively examine sources of intrinsic biological contrast including autofluorescent endogenous proteins and light interactions such as second-harmonic generation (SHG) in collagen. In particular, SHG-based microscopy has become a widely used quantitative modality for imaging noncentrosymmetric proteins such as collagen in a diverse range of tissues. Due to the underlying physical origin of the SHG signal, it is highly sensitive to collagen fibril/fiber structure and, importantly, to collagen-associated changes that occur in diseases such as cancer, fibrosis, and connective tissue disorders. An overview of SHG physics background and technologies is presented with a focused review on applications of SHG primarily as applied to cancer.
Collapse
Affiliation(s)
- Adib Keikhosravi
- Laboratory for Optical and Computational Instrumentation, University of Wisconsin at Madison, Madison, USA
| | - Jeremy S Bredfeldt
- Laboratory for Optical and Computational Instrumentation, University of Wisconsin at Madison, Madison, USA
| | - Abdul Kader Sagar
- Laboratory for Optical and Computational Instrumentation, University of Wisconsin at Madison, Madison, USA
| | - Kevin W Eliceiri
- Laboratory for Optical and Computational Instrumentation, University of Wisconsin at Madison, Madison, USA
| |
Collapse
|
14
|
Welge WA, DeMarco AT, Watson JM, Rice PS, Barton JK, Kupinski MA. Diagnostic potential of multimodal imaging of ovarian tissue using optical coherence tomography and second-harmonic generation microscopy. J Med Imaging (Bellingham) 2014; 1:025501. [PMID: 25798444 DOI: 10.1117/1.jmi.1.2.025501] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Ovarian cancer is particularly deadly because it is usually diagnosed after it has metastasized. We have previously identified features of ovarian cancer using optical coherence tomography (OCT) and second-harmonic generation (SHG) microscopy (targeting collagen). OCT provides an image of the ovarian microstructure while SHG provides a high-resolution map of collagen fiber bundle arrangement. Here we investigated the diagnostic potential of dual-modality OCT and SHG imaging. We conducted a fully crossed, multi-reader, multi-case study using seven human observers. Each observer classified 44 ex vivo mouse ovaries (16 normal and 28 abnormal) as normal or abnormal from OCT, SHG, and simultaneously viewed, co-registered OCT and SHG images and provided a confidence rating on a six-point scale. We determined the average receiver operating characteristic (ROC) curves, area under the ROC curves (AUC), and other quantitative figures of merit. The results show that OCT has diagnostic potential with an average AUC of 0.91 ± 0.06. The average AUC for SHG was less promising at 0.71 ± 0.13. The average AUC for simultaneous OCT and SHG was not significantly different from OCT alone, possibly due to the limited SHG field of view. The high performance of OCT and co-registered OCT and SHG warrants further investigation.
Collapse
Affiliation(s)
- Weston A Welge
- The University of Arizona, College of Optical Sciences, 1630 E. University Blvd. Tucson, AZ 85721, 303-875-5632
| | - Andrew T DeMarco
- The University of Arizona, Department of Speech, Language, and Hearing Sciences, 1131 E. 2nd St. Tucson, AZ 85721, 267-474-0513
| | - Jennifer M Watson
- The University of Arizona, Department of Biomedical Engineering, 1657 E. Helen St. Tucson, AZ 85721, 520-626-2917
| | - Photini S Rice
- The University of Arizona, Department of Biomedical Engineering, 1657 E. Helen St. Tucson, AZ 85721, 520-626-4463
| | - Jennifer K Barton
- The University of Arizona, College of Optical Sciences, Department of Biomedical Engineering, 1657 E. Helen St. Tucson, AZ 85721, 520-626-4116
| | - Matthew A Kupinski
- The University of Arizona, College of Optical Sciences, 1630 E. University Blvd. Tucson, AZ 85721, 520-621-2967
| |
Collapse
|
15
|
Adur J, Carvalho HF, Cesar CL, Casco VH. Nonlinear optical microscopy signal processing strategies in cancer. Cancer Inform 2014; 13:67-76. [PMID: 24737930 PMCID: PMC3981479 DOI: 10.4137/cin.s12419] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 03/02/2014] [Accepted: 03/03/2014] [Indexed: 02/06/2023] Open
Abstract
This work reviews the most relevant present-day processing methods used to improve the accuracy of multimodal nonlinear images in the detection of epithelial cancer and the supporting stroma. Special emphasis has been placed on methods of non linear optical (NLO) microscopy image processing such as: second harmonic to autofluorescence ageing index of dermis (SAAID), tumor-associated collagen signatures (TACS), fast Fourier transform (FFT) analysis, and gray level co-occurrence matrix (GLCM)-based methods. These strategies are presented as a set of potential valuable diagnostic tools for early cancer detection. It may be proposed that the combination of NLO microscopy and informatics based image analysis approaches described in this review (all carried out on free software) may represent a powerful tool to investigate collagen organization and remodeling of extracellular matrix in carcinogenesis processes.
Collapse
Affiliation(s)
- Javier Adur
- Microscopy Laboratory Applied to Molecular and Cellular Studies, Bioengineering School, National University of Entre Rios, Oro Verde, Entre Rios, Argentina. ; INFABiC-National Institute of Science and Technology on Photonics Applied to Cell Biology, Campinas, São Paulo, Brazil
| | - Hernandes F Carvalho
- INFABiC-National Institute of Science and Technology on Photonics Applied to Cell Biology, Campinas, São Paulo, Brazil
| | - Carlos L Cesar
- INFABiC-National Institute of Science and Technology on Photonics Applied to Cell Biology, Campinas, São Paulo, Brazil
| | - Víctor H Casco
- Microscopy Laboratory Applied to Molecular and Cellular Studies, Bioengineering School, National University of Entre Rios, Oro Verde, Entre Rios, Argentina
| |
Collapse
|
16
|
Orsinger GV, Watson JM, Gordon M, Nymeyer AC, de Leon EE, Brownlee JW, Hatch KD, Chambers SK, Barton JK, Kostuk RK, Romanowski M. Simultaneous multiplane imaging of human ovarian cancer by volume holographic imaging. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:36020. [PMID: 24676382 PMCID: PMC3967775 DOI: 10.1117/1.jbo.19.3.036020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 03/03/2014] [Indexed: 05/08/2023]
Abstract
Ovarian cancer is the most deadly gynecologic cancer, a fact which is attributable to poor early detection and survival once the disease has reached advanced stages. Intraoperative laparoscopic volume holographic imaging has the potential to provide simultaneous visualization of surface and subsurface structures in ovarian tissues for improved assessment of developing ovarian cancer. In this ex vivo ovarian tissue study, we assembled a benchtop volume holographic imaging system (VHIS) to characterize the microarchitecture of 78 normal and 40 abnormal tissue specimens derived from ovarian, fallopian tube, uterine, and peritoneal tissues, collected from 26 patients aged 22 to 73 undergoing bilateral salpingo-oophorectomy, hysterectomy with bilateral salpingo-oophorectomy, or abdominal cytoreductive surgery. All tissues were successfully imaged with the VHIS in both reflectance- and fluorescence-modes revealing morphological features which can be used to distinguish between normal, benign abnormalities, and cancerous tissues. We present the development and successful application of VHIS for imaging human ovarian tissue. Comparison of VHIS images with corresponding histopathology allowed for qualitatively distinguishing microstructural features unique to the studied tissue type and disease state. These results motivate the development of a laparoscopic VHIS for evaluating the surface and subsurface morphological alterations in ovarian cancer pathogenesis.
Collapse
Affiliation(s)
- Gabriel V. Orsinger
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
| | - Jennifer M. Watson
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
| | - Michael Gordon
- University of Arizona, Department of Optical Sciences, Tucson, Arizona 85721
| | - Ariel C. Nymeyer
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
| | - Erich E. de Leon
- University of Arizona, Department of Optical Sciences, Tucson, Arizona 85721
| | | | - Kenneth D. Hatch
- University of Arizona, College of Medicine, Department of Obstetrics and Gynecology, Tucson, Arizona 85724
| | - Setsuko K. Chambers
- University of Arizona, College of Medicine, Department of Obstetrics and Gynecology, Tucson, Arizona 85724
| | - Jennifer K. Barton
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
- University of Arizona, Department of Optical Sciences, Tucson, Arizona 85721
- University of Arizona, Electrical and Computer Engineering Department, Tucson, Arizona 85721
- Address all correspondence to: Jennifer K. Barton, E-mail:
| | - Raymond K. Kostuk
- University of Arizona, Department of Optical Sciences, Tucson, Arizona 85721
- University of Arizona, Electrical and Computer Engineering Department, Tucson, Arizona 85721
| | - Marek Romanowski
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
| |
Collapse
|
17
|
Bredfeldt JS, Liu Y, Pehlke CA, Conklin MW, Szulczewski JM, Inman DR, Keely PJ, Nowak RD, Mackie TR, Eliceiri KW. Computational segmentation of collagen fibers from second-harmonic generation images of breast cancer. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:16007. [PMID: 24407500 PMCID: PMC3886580 DOI: 10.1117/1.jbo.19.1.016007] [Citation(s) in RCA: 248] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 09/08/2013] [Accepted: 10/17/2013] [Indexed: 05/18/2023]
Abstract
Second-harmonic generation (SHG) imaging can help reveal interactions between collagen fibers and cancer cells. Quantitative analysis of SHG images of collagen fibers is challenged by the heterogeneity of collagen structures and low signal-to-noise ratio often found while imaging collagen in tissue. The role of collagen in breast cancer progression can be assessed post acquisition via enhanced computation. To facilitate this, we have implemented and evaluated four algorithms for extracting fiber information, such as number, length, and curvature, from a variety of SHG images of collagen in breast tissue. The image-processing algorithms included a Gaussian filter, SPIRAL-TV filter, Tubeness filter, and curvelet-denoising filter. Fibers are then extracted using an automated tracking algorithm called fiber extraction (FIRE). We evaluated the algorithm performance by comparing length, angle and position of the automatically extracted fibers with those of manually extracted fibers in twenty-five SHG images of breast cancer. We found that the curvelet-denoising filter followed by FIRE, a process we call CT-FIRE, outperforms the other algorithms under investigation. CT-FIRE was then successfully applied to track collagen fiber shape changes over time in an in vivo mouse model for breast cancer.
Collapse
Affiliation(s)
- Jeremy S. Bredfeldt
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
- Morgridge Institute for Research, 330 North Orchard Street, Madison, Wisconsin 53715
| | - Yuming Liu
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
| | - Carolyn A. Pehlke
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
| | - Matthew W. Conklin
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
- University of Wisconsin at Madison, Laboratory for Cell and Molecular Biology, 1525 Linden Drive, Madison, Wisconsin 53706
| | - Joseph M. Szulczewski
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
- University of Wisconsin at Madison, Laboratory for Cell and Molecular Biology, 1525 Linden Drive, Madison, Wisconsin 53706
| | - David R. Inman
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
- University of Wisconsin at Madison, Laboratory for Cell and Molecular Biology, 1525 Linden Drive, Madison, Wisconsin 53706
| | - Patricia J. Keely
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
- University of Wisconsin at Madison, Laboratory for Cell and Molecular Biology, 1525 Linden Drive, Madison, Wisconsin 53706
| | - Robert D. Nowak
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
- University of Wisconsin at Madison, Department of Electrical and Computer Engineering, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - Thomas R. Mackie
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
- Morgridge Institute for Research, 330 North Orchard Street, Madison, Wisconsin 53715
| | - Kevin W. Eliceiri
- University of Wisconsin at Madison, Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison, Wisconsin 53706
- Morgridge Institute for Research, 330 North Orchard Street, Madison, Wisconsin 53715
- University of Wisconsin at Madison, Laboratory for Cell and Molecular Biology, 1525 Linden Drive, Madison, Wisconsin 53706
- Address all correspondence to: Kevin W. Eliceiri, E-mail:
| |
Collapse
|
18
|
Zeug A, Stawarski M, Bieganska K, Korotchenko S, Wlodarczyk J, Dityatev A, Ponimaskin E. Current microscopic methods for the neural ECM analysis. PROGRESS IN BRAIN RESEARCH 2014; 214:287-312. [PMID: 25410363 DOI: 10.1016/b978-0-444-63486-3.00013-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The extracellular matrix (ECM) occupies the space between both neurons and glial cells and thus provides a microenvironment that regulates multiple aspects of neural activities. Because of the vital role of ECM as a natural environment of cells in vivo, there is a growing interest to develop methodology allowing for the detailed structural and functional analyses of ECM. In this chapter, we provide the detailed overview of current microscopic methods used for ECM analysis and also describe general labeling strategies for ECM visualization. Since ECM remodeling involves the proteolytic cleavage of ECM, we will also describe current experimental approaches to image the proteolytic reorganization and/or degradation of ECM. The special focus of this chapter is set to the application of Förster resonance energy transfer-based approaches to monitor intracellular and extracellular matrix functions with high spatiotemporal resolution.
Collapse
Affiliation(s)
- Andre Zeug
- Cellular Neurophysiology, Hannover Medical School, Hannover, Germany
| | - Michal Stawarski
- Laboratory of Cell Biophysics, Department of Molecular and Cellular Neurobiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | | | - Svetlana Korotchenko
- Laboratory for Brain Extracellular Matrix Research, University of Nizhny Novgorod, Nizhny Novgorod, Russia; Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, Genova, Italy; Department of Nanophysics, Istituto Italiano di Tecnologia, Genova, Italy
| | - Jakub Wlodarczyk
- Laboratory of Cell Biophysics, Department of Molecular and Cellular Neurobiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Alexander Dityatev
- Laboratory for Brain Extracellular Matrix Research, University of Nizhny Novgorod, Nizhny Novgorod, Russia; Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, Genova, Italy; Department of Nanophysics, Istituto Italiano di Tecnologia, Genova, Italy; Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Magdeburg, Germany
| | - Evgeni Ponimaskin
- Cellular Neurophysiology, Hannover Medical School, Hannover, Germany.
| |
Collapse
|
19
|
Watson JM, Marion SL, Rice PF, Bentley DL, Besselsen DG, Utzinger U, Hoyer PB, Barton JK. In vivo time-serial multi-modality optical imaging in a mouse model of ovarian tumorigenesis. Cancer Biol Ther 2013; 15:42-60. [PMID: 24145178 DOI: 10.4161/cbt.26605] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Identification of the early microscopic changes associated with ovarian cancer may lead to development of a diagnostic test for high-risk women. In this study we use optical coherence tomography (OCT) and multiphoton microscopy (MPM) (collecting both two photon excited fluorescence [TPEF] and second harmonic generation [SHG]) to image mouse ovaries in vivo at multiple time points. We demonstrate the feasibility of imaging mouse ovaries in vivo during a long-term survival study and identify microscopic changes associated with early tumor development. These changes include alterations in tissue microstructure, as seen by OCT, alterations in cellular fluorescence and morphology, as seen by TPEF, and remodeling of collagen structure, as seen by SHG. These results suggest that a combined OCT-MPM system may be useful for early detection of ovarian cancer.
Collapse
Affiliation(s)
| | - Samuel L Marion
- Physiology Department; University of Arizona; Tucson, AZ USA
| | - Photini F Rice
- Biomedical Engineering; University of Arizona; Tucson, AZ USA
| | - David L Bentley
- Biomedical Engineering; University of Arizona; Tucson, AZ USA
| | | | - Urs Utzinger
- Biomedical Engineering; University of Arizona; Tucson, AZ USA
| | | | | |
Collapse
|
20
|
Adur J, DSouza-Li L, Pedroni MV, Steiner CE, Pelegati VB, de Thomaz AA, Carvalho HF, Cesar CL. The severity of Osteogenesis imperfecta and type I collagen pattern in human skin as determined by nonlinear microscopy: proof of principle of a diagnostic method. PLoS One 2013; 8:e69186. [PMID: 23869235 PMCID: PMC3711916 DOI: 10.1371/journal.pone.0069186] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 06/09/2013] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The confirmatory diagnosis of Osteogenesis Imperfecta (OI) requires invasive, commonly bone biopsy, time consuming and destructive methods. This paper proposes an alternative method using a combination of two-photon excitation fluorescence (TPEF) and second-harmonic generation (SHG) microscopies from easily obtained human skin biopsies. We show that this method can distinguish subtypes of human OI. METHODOLOGY/PRINCIPAL FINDINGS Different aspects of collagen microstructure of skin fresh biopsies and standard H&E-stained sections of normal and OI patients (mild and severe forms) were distinguished by TPEF and SHG images. Moreover, important differences between subtypes of OI were identified using different methods of quantification such as collagen density, ratio between collagen and elastic tissue, and gray-level co-occurrence matrix (GLCM) image-pattern analysis. Collagen density was lower in OI dermis, while the SHG/autofluorescence index of the dermis was significantly higher in OI as compared to that of the normal skin. We also showed that the energy value of GLCM texture analysis is useful to discriminate mild from severe OI and from normal skin. CONCLUSIONS/SIGNIFICANCE This work demonstrated that nonlinear microscopy techniques in combination with image-analysis approaches represent a powerful tool to investigate the collagen organization in skin dermis in patients with OI and has the potential to distinguish the different types of OI. The procedure outlined in this paper requires a skin biopsy, which is almost painless as compared to the bone biopsy commonly used in conventional methods. The data presented here complement existing clinical diagnostic techniques and can be used as a diagnostic procedure to confirm the disease, evaluate its severity and treatment efficacy.
Collapse
Affiliation(s)
- Javier Adur
- Biophotonic Group, Optics and Photonics Research Center (CEPOF), Institute of Physics "Gleb Wataghin," State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil.
| | | | | | | | | | | | | | | |
Collapse
|