scholarly journals Hypotonicity differentially affects inflammatory marker production by nucleus pulposus tissue in simulated disc degeneration versus herniation

2019 ◽  
Vol 37 (5) ◽  
pp. 1110-1116 ◽  
Author(s):  
Vivian H. M. Mouser ◽  
Irene T. M. Arkesteijn ◽  
Bart G. M. van Dijk ◽  
Karin Wuertz‐Kozak ◽  
Keita Ito
Keyword(s):  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Inflammatory Marker ◽  
Nucleus Pulposus Tissue

Regeneration of nucleus pulposus tissue in an ovine intervertebral disc degeneration model by cell-free resorbable polymer scaffolds

2012 ◽  
Vol 8 (10) ◽  
pp. 811-820 ◽  
Author(s):  
Christian Woiciechowsky ◽  
Alexander Abbushi ◽  
Maria L. Zenclussen ◽  
Pablo Casalis ◽  
Jan Philipp Krüger ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Polymer Scaffolds ◽  
Nucleus Pulposus Tissue

Transplantation of Activated Nucleus Pulposus Cells after Cryopreservation: Efficacy Study in Canine Disc Degeneration Model

2014 ◽  
Vol 4 (1_suppl) ◽  
pp. s-0034-1376573-s-0034-1376573
Author(s):  
T. Nukaga ◽  
D. Sakai ◽  
A. Hiyama ◽  
T. Ishii ◽  
T. Nakai ◽  
...  
Keyword(s):  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Efficacy Study ◽  
Nucleus Pulposus Cells

scholarly journals Expression of miR-195 and its target gene Bcl-2 in human intervertebral disc degeneration and their effects on nucleus pulposus cell apoptosis

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Xue-Lin Lin ◽  
Zhao-Yun Zheng ◽  
Qing-Shan Zhang ◽  
Zhen Zhang ◽  
You-Zhi An
Keyword(s):  
Cell Proliferation ◽  
Intervertebral Disc ◽  
Nucleus Pulposus ◽  
Disc Degeneration ◽  
Rat Model ◽  
Cell Apoptosis ◽  
Intervertebral Disc Degeneration ◽  
Target Gene ◽  
Blank Group ◽  
Tnf Α

Abstract Objective To investigate the expression of miR-195 and its target gene Bcl-2 in intervertebral disc degeneration (IVDD) and its effect on nucleus pulposus (NP) cell apoptosis. Methods The expressions of miR-195 and Bcl-2 in NP tissues of IVDD patients were quantified by qRT-PCR and western blotting, respectively. NP cells were divided into blank group, TNF-α group, TNF-α + miR-NC group, TNF-α + siBcl-2 group, and TNF-α + miR-195 inhibitors + siBcl-2 group. Cell proliferation was detected by MTT assay, cell apoptosis evaluated by flow cytometry, and mitochondrial membrane potential (MMP) tested by JC-1 staining. Moreover, the function of miR-195 on IVDD in vivo was investigated using a puncture-induced IVDD rat model. Results IVDD patients had significantly increased miR-195 expression and decreased Bcl-2 protein expression in NP tissues. The expression of miR-195 was negatively correlated with the expression of Bcl-2 in IVDD patients. Dual-luciferase reporter gene assay indicated that Bcl-2 was a target gene of miR-195. In comparison with blank group, TNF-α group showed decreased cell proliferation and MMP, increased cell apoptosis, upregulated expression of miR-195, Bax, and cleaved caspase 3, and downregulated Bcl-2 protein, while these changes were attenuated by miR-195 inhibitors. Additionally, siBcl-2 can reverse the protective effect of miR-195 inhibitors on TNF-α-induced NP cells. Besides, inhibition of miR-195 alleviated IVDD degeneration and NP cell apoptosis in the rat model. Conclusion MiR-195 was significantly upregulated in NP tissues of IVDD patients, and inhibition of miR-195 could protect human NP cells from TNF-α-induced apoptosis via upregulation of Bcl-2.

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.

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