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Wang Z, Liu B, Ma X, Wang Y, Han W, Xiang L. lncRNA ZFAS1 promotes intervertebral disc degeneration by upregulating AAK1. Open Med (Wars) 2022; 17:1973-1986. [PMID: 36561842 PMCID: PMC9743196 DOI: 10.1515/med-2022-0530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 06/29/2022] [Accepted: 07/08/2022] [Indexed: 12/13/2022] Open
Abstract
We investigated the function of lncRNA zinc finger antisense 1 (ZFAS1) in intervertebral disc degeneration (IDD) progression in vitro and in vivo. Nucleus pulposus (NP) tissues were obtained from 20 patients with IDD. IL-1β was used to stimulate primary NP cells to establish the IDD models in vitro. Gene expression was determined by RT-qPCR. 5-Ethynyl-2'-deoxyuridine and flow cytometry were performed to determine cell proliferation and apoptosis, and western blotting was conducted to measure the apoptosis- and extracellular matrix (ECM)-related protein expression. Luciferase reporter assay was used to examine the interactions between the genes. We also investigated the effect of ZFAS1 in a mouse model of IDD induced by needle punctures. Our results showed that ZFAS1 expression was elevated in degenerative NP tissues and IL-1β-treated NP cells. ZFAS1 knockdown inhibited NP cell apoptosis and ECM degradation induced by IL-1β. Mechanically, ZFAS1 sponged miR-4711-5p and adaptor-associated kinase 1 (AAK1) was targeted by miR-4711-5p. Furthermore, AAK1 overexpression partially eliminated the impact of ZFAS1 depletion on NP cell proliferation, apoptosis, and ECM degradation. More importantly, the results of the in vivo studies confirmed the effect of silencing ZFAS1 on alleviating the symptoms of IDD mice. Overall, silencing ZFAS1 inhibits IDD progression by reducing NP cell apoptosis and ECM degradation through the miR-4711-5p/AAK1 axis.
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Affiliation(s)
- Zheng Wang
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenyang 110016, Liaoning, China
| | - Bin Liu
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenyang 110016, Liaoning, China
| | - Xiangyu Ma
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenyang 110016, Liaoning, China
| | - Yu Wang
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenyang 110016, Liaoning, China
| | - Wenfeng Han
- Department of Orthopedics, General Hospital of Northern Theater Command, No. 83 Wenhua
Road, Shenyang 110016, Liaoning, China
| | - Liangbi Xiang
- Department of Orthopedics, General Hospital of Northern Theater Command, No. 83 Wenhua
Road, Shenyang 110016, Liaoning, China
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Schwarz-Nemec U, Friedrich KM, Prayer D, Trattnig S, Schwarz FK, Weber M, Bettelheim D, Grohs JG, Nemec SF. Lumbar Intervertebral Disc Degeneration as a Common Incidental Finding in Young Pregnant Women as Observed on Prenatal Magnetic Resonance Imaging. J Womens Health (Larchmt) 2020; 29:713-720. [PMID: 31934808 DOI: 10.1089/jwh.2019.7964] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background: Obstetric imaging, subserving fetal evaluation, may yield incidental maternal findings. Based on prenatal magnetic resonance (MR) imaging, this study aims to investigate incidental intervertebral disc degeneration and displacement in young, pregnant women. Methods: This retrospective study included the sagittal 1.5 Tesla, T2-weighted lumbar spine images of 943 pregnant Central Europeans (age range, 18-47 years), who initially had undergone MR imaging because of sonographically suspected fetal abnormalities. Qualitatively, 4715 lumbar intervertebral discs were evaluated for degeneration using a modified Pfirrmann MR classification (nondegenerated, low-grade, moderate, and high-grade degeneration), as well as for displacement. In addition to descriptive statistics, an ordinal regression analysis was performed to analyze the relationship between degeneration and the women's age, and body weight. Results: With regard to the highest degree of degeneration in each woman, 578 (61.3%) showed low-grade, 211 (22.4%) moderate, and 154 (16.3%) high-grade degeneration, and no woman had entirely nondegenerated discs. For the span from 18 to 47 years of age, moderate and high-grade degeneration increased from 6.7% to 36.7% and from 13.3% to 22.4%, respectively. Of 943 women, 57 (6%) had disc displacements, of which 97% were in conjunction with high-grade degeneration. There was a statistically significant relationship (p < 0.001) between degeneration and age, and between degeneration and body weight. Conclusions: In young pregnant women, lumbar intervertebral disc degeneration is a ubiquitous, incidental finding, increasing from the late second decade of life onward, which may be part of physiological aging, as opposed to a small percentage of incidental disc displacements.
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Affiliation(s)
- Ursula Schwarz-Nemec
- Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Klaus M Friedrich
- Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Daniela Prayer
- Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Siegfried Trattnig
- MR Center of Excellence, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Felix K Schwarz
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Michael Weber
- Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Dieter Bettelheim
- Division of Obstetrics and Fetomaternal Medicine, Department of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
| | - Josef G Grohs
- Department of Orthopaedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria
| | - Stefan F Nemec
- Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
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Brayda-Bruno M, Tibiletti M, Ito K, Fairbank J, Galbusera F, Zerbi A, Roberts S, Wachtel E, Merkher Y, Sivan SS. Advances in the diagnosis of degenerated lumbar discs and their possible clinical application. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2013; 23 Suppl 3:S315-23. [PMID: 23978994 DOI: 10.1007/s00586-013-2960-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 06/27/2013] [Accepted: 08/06/2013] [Indexed: 12/13/2022]
Abstract
PURPOSE One possible source of chronic low back pain is a degenerated intervertebral disc. In this review, various diagnostic methods for the assessment of the presence of degenerative changes are described. These include clinical MRI, a number of novel MRI techniques and nuclear magnetic resonance spectroscopy. METHODS Non-systematic literature review. RESULTS Clinical MRI is the most commonly employed technique to determine the general "health status" of the intervertebral disc. Novel MRI techniques, such as quantitative MRI, T1ρ MRI, sodium MRI and nuclear magnetic resonance spectroscopy, are more sensitive in quantifying the biochemical changes of disc degeneration, as measured by alteration in collagen structure, as well as water and proteoglycan loss. As potential future diagnostic alternatives, miniature sensors are currently being developed to measure parameters associated with the disc degeneration cascade, such as intradiscal pressure and PG concentration. However, none of the methods listed above show sufficient specificity to identify a degenerated disc as the actual source of the pain. Provocative discography is the only test aimed at a direct diagnosis of discogenic pain, but it has a high false positive rate and there is some evidence of long-term adverse effects. Imaging techniques have also been tested for this purpose, but their validity has not been confirmed and they do appear to be problematic. CONCLUSIONS A reliable diagnostic tool that could help a clinician to determine if a disc is the source of the pain in patients with chronic LBP is still not available. New MRI techniques are under investigation that could result in a significant improvement over current methods, particularly as they can allow monitoring, not only of morphological but also of biochemical changes.
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Lavrador JP, Simas N, Oliveira E, Teixeira JC, Simão D, Livraghi S. Discogenic pain: Who cares? Health (London) 2013. [DOI: 10.4236/health.2013.511261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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