1
|
Abusara Z, Moo EK, Haider I, Timmermann C, Miller S, Timmermann S, Herzog W. Functional Assessment of Human Articular Cartilage Using Second Harmonic Generation (SHG) Imaging: A Feasibility Study. Ann Biomed Eng 2024; 52:1009-1020. [PMID: 38240956 DOI: 10.1007/s10439-023-03437-1] [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] [Received: 08/13/2023] [Accepted: 12/26/2023] [Indexed: 03/16/2024]
Abstract
Many arthroscopic tools developed for knee joint assessment are contact-based, which is challenging for in vivo application in narrow joint spaces. Second harmonic generation (SHG) laser imaging is a non-invasive and non-contact method, thus presenting an attractive alternative. However, the association between SHG-based measures and cartilage quality has not been established systematically. Here, we investigated the feasibility of using image-based measures derived from SHG microscopy for objective evaluation of cartilage quality as assessed by mechanical testing. Human tibial plateaus harvested from nine patients were used. Cartilage mechanical properties were determined using indentation stiffness (Einst) and streaming potential-based quantitative parameters (QP). The correspondence of the cartilage electromechanical properties (Einst and QP) and the image-based measures derived from SHG imaging, tissue thickness and cell viability were evaluated using correlation and logistic regression analyses. The SHG-related parameters included the newly developed volumetric fraction of organised collagenous network (Φcol) and the coefficient of variation of the SHG intensity (CVSHG). We found that Φcol correlated strongly with Einst and QP (ρ = 0.97 and - 0.89, respectively). CVSHG also correlated, albeit weakly, with QP and Einst, (|ρ| = 0.52-0.58). Einst and Φcol were the most sensitive predictors of cartilage quality whereas CVSHG only showed moderate sensitivity. Cell viability and tissue thickness, often used as measures of cartilage health, predicted the cartilage quality poorly. We present a simple, objective, yet effective image-based approach for assessment of cartilage quality. Φcol correlated strongly with electromechanical properties of cartilage and could fuel the continuous development of SHG-based arthroscopy.
Collapse
Affiliation(s)
- Ziad Abusara
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada.
- McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada.
| | - Eng Kuan Moo
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada
- Department of Mechanical and Aerospace Engineering, Faculty of Engineering and Design, Carleton University, Ottawa, Canada
| | - Ifaz Haider
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada
- McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Claire Timmermann
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada
| | - Sue Miller
- McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada
- Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, Canada
- Taylor Institute for Teaching and Learning, University of Calgary, Calgary, Canada
| | - Scott Timmermann
- McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada
- Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, Canada
| | - Walter Herzog
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada
- McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada
| |
Collapse
|
2
|
Yoshioka NK, Young GM, Khajuria DK, Karuppagounder V, Pinamont WJ, Fanburg-Smith JC, Abraham T, Elbarbary RA, Kamal F. Structural changes in the collagen network of joint tissues in late stages of murine OA. Sci Rep 2022; 12:9159. [PMID: 35650306 PMCID: PMC9160297 DOI: 10.1038/s41598-022-13062-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/28/2022] [Indexed: 11/23/2022] Open
Abstract
Osteoarthritis (OA) is the most prevalent degenerative joint disease, resulting in joint pain, impaired movement, and structural changes. As the ability of joint tissue to resist stress is mainly imparted by fibrillar collagens in the extracellular matrix, changes in the composition and structure of collagen fibers contribute to the pathological remodeling observed in OA joints that includes cartilage degeneration, subchondral bone (SCB) sclerosis, and meniscal damage. Using the established OA model of destabilization of the medial meniscus (DMM) in C57BL/6J mice, we performed a comprehensive analysis of the content and structure of collagen fibers in the articular cartilage, subchondral bone, and menisci using complementary techniques, which included second harmonic generation microscopy and immunofluorescence staining. We found that regions exposed to increased mechanical stress in OA mice, typically closest to the site of injury, had increased collagen fiber thickness, dysregulated fiber formation, and tissue specific changes in collagen I and II (Col I and Col II) expression. In cartilage, OA was associated with decreased Col II expression in all regions, and increased Col I expression in the anterior and posterior regions. Col I fiber thickness was increased in all regions with disorganization in the center region. In the superficial SCB, all regions exhibited increased Col I expression and fiber thickness in OA mice; no changes were detected in the deeper regions of the subchondral bone except for increased Col I fiber thickness. In the menisci, OA led to increased Col I and Col II expression in the vascular and avascular regions of the anterior meniscus with increased Col I fiber thickness in these regions. Similar changes were observed only in the vascular region of the posterior meniscus. Our findings provide, for the first time, comprehensive insights into the microarchitectural changes of extracellular matrix in OA and serve as guidelines for studies investigating therapies that target collagenous changes as means to impede the progression of osteoarthritis.
Collapse
Affiliation(s)
- Natalie K Yoshioka
- Center for Orthopedic Research and Translational Sciences (CORTS), Penn State College of Medicine, Hershey, PA, USA
- Department of Orthopedics and Rehabilitation, Penn State College of Medicine, Hershey, PA, USA
| | - Gregory M Young
- Center for Orthopedic Research and Translational Sciences (CORTS), Penn State College of Medicine, Hershey, PA, USA
- Department of Orthopedics and Rehabilitation, Penn State College of Medicine, Hershey, PA, USA
| | - Deepak Kumar Khajuria
- Center for Orthopedic Research and Translational Sciences (CORTS), Penn State College of Medicine, Hershey, PA, USA
- Department of Orthopedics and Rehabilitation, Penn State College of Medicine, Hershey, PA, USA
| | - Vengadeshprabhu Karuppagounder
- Center for Orthopedic Research and Translational Sciences (CORTS), Penn State College of Medicine, Hershey, PA, USA
- Department of Orthopedics and Rehabilitation, Penn State College of Medicine, Hershey, PA, USA
| | - William J Pinamont
- Center for Orthopedic Research and Translational Sciences (CORTS), Penn State College of Medicine, Hershey, PA, USA
- Department of Orthopedics and Rehabilitation, Penn State College of Medicine, Hershey, PA, USA
| | - Julie C Fanburg-Smith
- Department of Pathology, Penn State Health/Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Thomas Abraham
- Department of Neural and Behavioral Science, Penn State University College of Medicine, Hershey, PA, USA
- Microscopy Imaging Facility, Penn State University College of Medicine, Hershey, PA, USA
| | - Reyad A Elbarbary
- Center for Orthopedic Research and Translational Sciences (CORTS), Penn State College of Medicine, Hershey, PA, USA.
- Department of Orthopedics and Rehabilitation, Penn State College of Medicine, Hershey, PA, USA.
- Department of Biochemistry and Molecular Biology, Penn State College of Medicine, Hershey, PA, USA.
| | - Fadia Kamal
- Center for Orthopedic Research and Translational Sciences (CORTS), Penn State College of Medicine, Hershey, PA, USA.
- Department of Orthopedics and Rehabilitation, Penn State College of Medicine, Hershey, PA, USA.
- Department of Pharmacology, Penn State College of Medicine, Hershey, PA, USA.
| |
Collapse
|
3
|
A Second Harmonic Wave Angle Sensor with a Collimated Beam of Femtosecond Laser. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12105211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
An optical angle sensor based on the collimated mode-locked femtosecond laser (Fs) beam, in which the angle measurement is carried out by observing the second harmonic wave generated by irradiating the Fs beam towards MgO:LiNbO3 crystal, is proposed. The angle detection is demonstrated by identifying the second harmonic generation (SHG) spectrum peaks against the angular position of the rotating stage-mounted MgO:LiNbO3 crystal that represents the measurement object. The MgO:LiNbO3 with a length of 2 mm, a cut-off angle of 47°, a diameter of 5 mm, and 5% of MgO:LN, is rotated within the phase-matching angle over a wavelength range from 1480 nm to 1640 nm. Angle measurement is also carried out by placing the crystal at different positions along the laser beam propagation direction to confirm the feasibility of the angle sensor where the measurement range, measurement sensitivity, and resolution of the proposed method are also evaluated. The result shows that the proposed angle sensor can overcome the working distance limitation of conventional angle sensors and has no specific material target requirement. Since the configuration of the proposed angle sensor is not limited by the specification of the measurement target, it is expected to have wide potential applications, especially in the manufacturing process and inspection process.
Collapse
|
4
|
Ding DF, Xue Y, Zhang JP, Zhang ZQ, Li WY, Cao YL, Xu JG. Similarities and differences between rat and mouse chondrocyte gene expression induced by IL-1β. J Orthop Surg Res 2022; 17:70. [PMID: 35120538 PMCID: PMC8815127 DOI: 10.1186/s13018-021-02889-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/14/2021] [Indexed: 11/15/2022] Open
Abstract
Background Osteoarthritis (OA) is the most prevalent degenerative joint disease. In vitro experiments are an intuitive method used to investigate its early pathogenesis. Chondrocyte inflammation models in rats and mice are often used as in vitro models of OA. However, similarities and differences between them in the early stages of inflammation have not been reported. Objective This paper seeks to compare the chondrocyte phenotype of rats and mice in the early inflammatory state and identify chondrocytes suitable for the study of early OA. Methods Under similar conditions, chondrocytes from rats and mice were stimulated using the same IL-1β concentration for a short period of time. The phenotypic changes of chondrocytes were observed under a microscope. The treated chondrocytes were subjected to RNA-seq to identify similarities and differences in gene expression. Chondrocytes were labelled with EdU for proliferation analysis. Cell proliferation-associated proteins, including minichromosome maintenance 2 (MCM2), minichromosome maintenance 5 (MCM5), Lamin B1, proliferating cell nuclear antigen (PCNA), and Cyclin D1, were analysed by immunocytochemical staining, cell immunofluorescence, and Western blots to verify the RNA-seq results. Results RNA-seq revealed that the expression patterns of cytokines, chemokines, matrix metalloproteinases, and collagen were similar between the rat and mouse chondrocyte inflammation models. Nonetheless, the expression of proliferation-related genes showed the opposite pattern. The RNA-seq results were further verified by subsequent experiments. The expression levels of MCM2, MCM5, Lamin B1, PCNA, and Cyclin D1 were significantly upregulated in rat chondrocytes (P < 0.05) and mouse chondrocytes (P < 0.05). Conclusions Based on the findings, the rat chondrocyte inflammation model may help in the study of the early pathological mechanism of OA. Supplementary Information The online version contains supplementary material available at 10.1186/s13018-021-02889-2.
Collapse
Affiliation(s)
- Dao-Fang Ding
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Yan Xue
- Shanghai Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Centre), Tongji University School of Medicine, Shanghai, 201613, China
| | - Jun-Peng Zhang
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Zeng-Qiao Zhang
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Wen-Yao Li
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Yue-Long Cao
- Shi's Center of Orthopedics and Traumatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Jian-Guang Xu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China. .,Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China.
| |
Collapse
|
5
|
Tschaikowsky M, Selig M, Brander S, Balzer BN, Hugel T, Rolauffs B. Proof-of-concept for the detection of early osteoarthritis pathology by clinically applicable endomicroscopy and quantitative AI-supported optical biopsy. Osteoarthritis Cartilage 2021; 29:269-279. [PMID: 33220445 DOI: 10.1016/j.joca.2020.10.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 09/30/2020] [Accepted: 10/14/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Clinical trials for osteoarthritis (OA), the leading cause of global disability, are unable to pinpoint the early, potentially reversible disease with clinical technology. Hence, disease-modifying drug candidates cannot be tested early in the disease. To overcome this obstacle, we asked whether early OA-pathology detection is possible with current clinical technology. METHODS We determined the relationship between two sensitive early OA markers, atomic force microscopy (AFM)-measured human articular cartilage (AC) surface stiffness, and location-matched superficial zone chondrocyte spatial organizations (SCSOs), asking whether a significant loss of surface stiffness can be detected in early OA SCSO stages. We then tested whether current clinical technology can visualize and accurately diagnose the SCSOs using an approved probe-based confocal laser-endomicroscope and a random forest (RF) model. RESULTS We demonstrated a correlation between AC surface stiffness and the SCSO (rrm = -0.91; 95%CI: -0.97, -0.73), and an extensive loss of surface stiffness specifically in those ACs with early OA-typical SCSO (95%CIs: string SCSO: 269-173 kPa, double string SCSO: 77-46 kPa). This established the SCSO as a visualizable, functionally relevant surrogate marker of early OA AC surface pathology. Moreover, SCSO-based stiffness discrimination worked well in each patient's AC. We then demonstrated feasibility of visualizing the SCSO by clinical laser-endomicroscopy and, importantly, accurate SCSO diagnosis using RF. CONCLUSION We present the proof-of-concept of early OA-pathology detection with available clinical technology, introducing a future-oriented, AI-supported, non-destructive quantitative optical biopsy for early disease detection. Operationalizing SCSO recognition, this approach allows testing for correlations between local tissue architectures with other experimental and clinical read-outs, but needs clinical validation and a larger sample size for defining diagnostic thresholds.
Collapse
Affiliation(s)
- M Tschaikowsky
- Institute of Physical Chemistry, Albert-Ludwigs-University Freiburg, Albertstr. 21, 79104, Freiburg, Germany; G.E.R.N. Research Center for Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center - Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Germany
| | - M Selig
- G.E.R.N. Research Center for Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center - Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Germany
| | - S Brander
- Institute of Physical Chemistry, Albert-Ludwigs-University Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - B N Balzer
- Institute of Physical Chemistry, Albert-Ludwigs-University Freiburg, Albertstr. 21, 79104, Freiburg, Germany; Cluster of Excellence LivMatS @ FIT - Freiburg Center for Interactive Materials and Bioinspired Technologies, Freiburg, Germany
| | - T Hugel
- Institute of Physical Chemistry, Albert-Ludwigs-University Freiburg, Albertstr. 21, 79104, Freiburg, Germany; Cluster of Excellence LivMatS @ FIT - Freiburg Center for Interactive Materials and Bioinspired Technologies, Freiburg, Germany.
| | - B Rolauffs
- G.E.R.N. Research Center for Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center - Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Germany.
| |
Collapse
|
6
|
Maturation of the Meniscal Collagen Structure Revealed by Polarization-Resolved and Directional Second Harmonic Generation Microscopy. Sci Rep 2019; 9:18448. [PMID: 31804577 PMCID: PMC6895152 DOI: 10.1038/s41598-019-54942-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 11/12/2019] [Indexed: 11/08/2022] Open
Abstract
We report Polarization-resolved Second Harmonic Generation (P-SHG) and directional SHG (forward and backward, F/B) measurements of equine foetal and adult collagen in meniscus, over large field-of-views using sample-scanning. Large differences of collagen structure and fibril orientation with maturation are revealed, validating the potential for this novel methodology to track such changes in meniscal structure. The foetal menisci had a non-organized and more random collagen fibrillar structure when compared with adult using P-SHG. For the latter, clusters of homogeneous fibril orientation (inter-fibrillar areas) were revealed, separated by thick fibers. F/B SHG showed numerous different features in adults notably, in thick fibers compared to interfibrillar areas, unlike foetal menisci that showed similar patterns for both directions. This work confirms previous studies and improves the understanding of meniscal collagen structure and its maturation, and makes F/B and P-SHG good candidates for future studies aiming at revealing structural modifications to meniscus due to pathologies.
Collapse
|