scholarly journals The Role of Panx3 in Age-Associated and Injury-Induced Intervertebral Disc Degeneration

2021 ◽  
Vol 22 (3) ◽  
pp. 1080
Author(s):  
Meaghan Serjeant ◽  
Paxton M. Moon ◽  
Diana Quinonez ◽  
Silvia Penuela ◽  
Frank Beier ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Knockout Mice ◽  
Annulus Fibrosus ◽  
Intervertebral Disc Degeneration ◽  
Lamellar Thickness ◽  
Wild Type ◽  
Post Injury ◽  
Post Traumatic ◽  
Ivd Degeneration

Pannexin 3 (Panx3) is a mechanosensitive, channel-forming glycoprotein implicated in the progression of post-traumatic osteoarthritis. Despite evidence for Panx3 expression in the intervertebral disc (IVD), its function in this cartilaginous joint structure remained unknown. Using Panx3 knockout mice, this study investigated the role of Panx3 in age-associated IVD degeneration and degeneration induced by annulus fibrosus (AF) needle puncture. Loss of Panx3 did not significantly impact the progression of age-associated histopathological IVD degeneration; however, loss of Panx3 was associated with decreased gene expression of Acan, Col1a1, Mmp13 and Runx2 and altered localization of COLX in the IVD at 19 months-of-age. Following IVD injury in the caudal spine, histological analysis of wild-type mice revealed clusters of hypertrophic cells in the AF associated with increased pericellular proteoglycan accumulation, disruptions in lamellar organization and increased lamellar thickness. In Panx3 knockout mice, hypertrophic AF cells were rarely detected and AF structure was largely preserved post-injury. Interestingly, uninjured IVDs adjacent to the site of injury more frequently showed evidence of early nucleus pulposus degeneration in Panx3 knockout mice but remained healthy in wild-type mice. These findings suggest a role for Panx3 in mediating the adaptive cellular responses to altered mechanical stress in the IVD, which may buffer aberrant loads transferred to adjacent motion segments.

scholarly journals Mesenchymal Stem Cell for Prevention and Management of Intervertebral Disc Degeneration

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Umile Giuseppe Longo ◽  
Nicola Papapietro ◽  
Stefano Petrillo ◽  
Edoardo Franceschetti ◽  
Nicola Maffulli ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Annulus Fibrosus ◽  
Intervertebral Disc Degeneration ◽  
Surgical Intervention ◽  
Pathological Condition ◽  
Treatment Strategies ◽  
Clinical Applications ◽  
Ivd Degeneration

Intervertebral disc degeneration (IVD) is a frequent pathological condition. Conservative management often fails, and patients with IVD degeneration may require surgical intervention. Several treatment strategies have been proposed, although only surgical discectomy and arthrodesis have been proved to be predictably effective. The aim of biological strategies is to prevent and manage IVD degeneration, improve the function, the anabolic and reparative capabilities of the nucleus pulposus and annulus fibrosus cells, and inhibit matrix degradation. At present, clinical applications are still in their infancy. Further studies are required to clarify the role of mesenchymal stem cells and gene therapy for the prevention and treatment of IVD degeneration.

scholarly journals Growth Factors and Anticatabolic Substances for Prevention and Management of Intervertebral Disc Degeneration

2012 ◽  
Vol 2012 ◽  
pp. 1-9
Author(s):  
Umile Giuseppe Longo ◽  
Stefano Petrillo ◽  
Edoardo Franceschetti ◽  
Nicola Maffulli ◽  
Vincenzo Denaro
Keyword(s):  
Growth Factors ◽  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Annulus Fibrosus ◽  
Intervertebral Disc Degeneration ◽  
Surgical Intervention ◽  
Treatment Strategies ◽  
Clinical Applications ◽  
Ivd Degeneration

Intervertebral disc (IVD) degeneration is frequent, appearing from the second decade of life and progressing with age. Conservative management often fails, and patients with IVD degeneration may need surgical intervention. Several treatment strategies have been proposed, although only surgical discectomy and arthrodesis have been proved to be predictably effective. Biological strategies aim to prevent and manage IVD degeneration, improving the function and anabolic and reparative capabilities of the nucleus pulposus and annulus fibrosus cells and inhibiting matrix degradation. At present, clinical applications are still in their infancy. Further studies are required to clarify the role of growth factors and anticatabolic substances for prevention and management of intervertebral disc degeneration.

scholarly journals Role of the miR-133a-5p/FBXO6 axis in the regulation of intervertebral disc degeneration

2021 ◽  
Vol 29 ◽  
pp. 123-133
Author(s):  
Xian-Fa Du ◽  
Hai-Tao Cui ◽  
He-Hai Pan ◽  
Jun Long ◽  
Hao-Wen Cui ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration

The Influence of Axial Compression on the Cellular and Mechanical Function of Spinal Tissues; Emphasis on The Nucleus Pulposus and Annulus Fibrosus

2021 ◽  
Author(s):  
John McMorran ◽  
Diane Gregory
Keyword(s):  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Axial Compression ◽  
Disc Degeneration ◽  
Annulus Fibrosus ◽  
Intervertebral Disc Degeneration ◽  
Chronic Back Pain ◽  
Physiological State ◽  
Movement Pattern ◽  
Mechanical Function

Abstract In light of the correlation between chronic back pain and intervertebral disc degeneration, this literature review seeks to illustrate the importance of the hydraulic response across the nucleus pulposus- annulus fibrosus interface, by synthesizing current information regarding injurious biomechanics of the spine, stemming from axial compression. Damage to vertebrae, endplates, the nucleus pulposus, and the annulus fibrosus, can all arise from axial compression, depending on the segment's posture, the manner in which it is loaded, and the physiological state of tissue. Therefore, this movement pattern was selected to illustrate the importance of the bracing effect of a pressurized nucleus pulposus on the annulus fibrosus, and how injuries interrupting support to the annulus fibrosus may contribute to intervertebral disc degeneration.

Role of autophagy in intervertebral disc degeneration

2021 ◽  
Author(s):  
Rebecca Kritschil ◽  
Melanie Scott ◽  
Gwendolyn Sowa ◽  
Nam Vo
Keyword(s):  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration

scholarly journals The Myth of Fibroid Degeneration in the Canine Intervertebral Disc: A Histopathological Comparison of Intervertebral Disc Degeneration in Chondrodystrophic and Nonchondrodystrophic Dogs

2017 ◽  
Vol 54 (6) ◽  
pp. 945-952 ◽  
Author(s):  
Tove Hansen ◽  
Lucas A. Smolders ◽  
Marianna A. Tryfonidou ◽  
Björn P. Meij ◽  
Johannes C. M. Vernooij ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Histopathological Changes ◽  
Seminal Work ◽  
Notochordal Cells ◽  
Tissue Changes ◽  
Chondroid Metaplasia ◽  
Ivd Degeneration

Since the seminal work by Hans-Jörgen Hansen in 1952, it has been assumed that intervertebral disc (IVD) degeneration in chondrodystrophic (CD) dogs involves chondroid metaplasia of the nucleus pulposus, whereas in nonchondrodystrophic (NCD) dogs, fibrous metaplasia occurs. However, more recent studies suggest that IVD degeneration in NCD and CD dogs is more similar than originally thought. Therefore, the aim of this study was to compare the histopathology of IVD degeneration in CD and NCD dogs. IVDs with various grades of degeneration (Thompson grade I–III, n = 7 per grade) from both CD and NCD dogs were used (14 CD and 18 NCD dogs, 42 IVDs in total). Sections were scored according to a histological scoring scheme for canine IVD degeneration, including evaluation of the presence of fibrocyte-like cells in the nucleus pulposus. In CD dogs, the macroscopically non-degenerated nucleus pulposus contained mainly chondrocyte-like cells, whereas the non-degenerated nucleus pulposus of NCD dogs mainly contained notochordal cells. The histopathological changes in degenerated discs were similar in CD and NCD dogs and resembled chondroid metaplasia. Fibrocytes were not seen in the nucleus pulposus, indicating that fibrous degeneration of the IVD was not present in any of the evaluated grades of degeneration. In conclusion, intervertebral disc degeneration was characterized by chondroid metaplasia of the nucleus pulposus in both NCD and CD dogs. These results revoke the generally accepted concept that NCD and CD dogs suffer from a different type of IVD degeneration, in veterinary literature often referred to as chondroid or fibroid degeneration, and we suggest that chondroid metaplasia should be used to describe the tissue changes in the IVD in both breed types.

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