Please use this identifier to cite or link to this item:
|Title:||An in vitro study of dynamic cyclic compressive stress on human inner annulus fibrosus and nucleus pulposus cells||Authors:||Hee, H.T.
Inner annulus fibrosus and Nucleus pulposus cells
|Issue Date:||2010||Citation:||Hee, H.T., Zhang, J., Wong, H.K. (2010). An in vitro study of dynamic cyclic compressive stress on human inner annulus fibrosus and nucleus pulposus cells. Spine Journal 10 (9) : 795-801. ScholarBank@NUS Repository. https://doi.org/10.1016/j.spinee.2010.06.009||Abstract:||Background Context: Intervertebral disc (IVD) cells exhibit diverse biologic responses to compressive stress depending on the compressive stress type, magnitude, duration, and anatomic zone of IVD cell origin. The previous studies mainly focused on the effects of compressive stress on animal IVD tissue. Few studies have investigated the response of human IVD tissue to compressive stress. Purpose: To assess the effect of dynamic cyclic compressive stress on biosynthesis of collagen and glycosaminoglycan of human inner annulus fibrosus (AF) and nucleus pulposus (NP) cells. Study Design/Setting: Observation of moderate and high magnitudes of compressive stress on human IVD cell biosynthesis. Patient Sample: Human IVD of adolescent idiopathic scoliosis case undergoing thoracoscopic discectomy and fusion was collected. Outcome Measures: Cell morphology, cell proliferation assay, as well as collagen and glycosaminoglycan content were examined in vitro. Methods: Intervertebral discs were cultured under 0.2 or 0.4 MPa of compressive stress at 1 Hz for 2 hours twice a day up to 7 days. These were compared with samples unloaded. The analysis was done via electron microscopy examination, cell proliferation assay, as well as collagen and glycosaminoglycan content analysis. Results: Collagen and glycosaminoglycan content in the inner AF and NP cells cultured under 0.2 MPa of compressive stress was significantly higher than that in the control cells but was significantly lower than that in the control cells under 0.4 MPa of compressive stress. The number of endoplasmic reticulum in the inner AF and NP cells cultured under 0.2 MPa of compressive stress was significantly higher than that in the control cells but was significantly lower than that in the control cells under 0.4 MPa of compressive stress. Conclusion: These findings imply that biosynthetic characteristics of human inner AF and NP cells may vary under varying degrees of compressive stresses, which may result in varying amounts of extracellular matrix being secreted. © 2010 Elsevier Inc. All rights reserved.||Source Title:||Spine Journal||URI:||http://scholarbank.nus.edu.sg/handle/10635/25291||ISSN:||15299430||DOI:||10.1016/j.spinee.2010.06.009|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Apr 17, 2019
WEB OF SCIENCETM
checked on Apr 1, 2019
checked on Apr 19, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.