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An organ culture system to model early degenerative changes of the intervertebral disc

INTRODUCTION: Back pain, a significant source of morbidity in our society, is related to the degenerative changes of the intervertebral disc. At present, the treatment of disc disease consists of therapies that are aimed at symptomatic relief. This shortcoming stems in large part from our lack of un...

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Autores principales: Ponnappan, Ravi K, Markova, Dessislava Z, Antonio, Paul JD, Murray, Hallie B, Vaccaro, Alexander R, Shapiro, Irving M, Anderson, D Greg, Albert, Todd J, Risbud, Makarand V
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3308106/
https://www.ncbi.nlm.nih.gov/pubmed/22018279
http://dx.doi.org/10.1186/ar3494
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author Ponnappan, Ravi K
Markova, Dessislava Z
Antonio, Paul JD
Murray, Hallie B
Vaccaro, Alexander R
Shapiro, Irving M
Anderson, D Greg
Albert, Todd J
Risbud, Makarand V
author_facet Ponnappan, Ravi K
Markova, Dessislava Z
Antonio, Paul JD
Murray, Hallie B
Vaccaro, Alexander R
Shapiro, Irving M
Anderson, D Greg
Albert, Todd J
Risbud, Makarand V
author_sort Ponnappan, Ravi K
collection PubMed
description INTRODUCTION: Back pain, a significant source of morbidity in our society, is related to the degenerative changes of the intervertebral disc. At present, the treatment of disc disease consists of therapies that are aimed at symptomatic relief. This shortcoming stems in large part from our lack of understanding of the biochemical and molecular events that drive the disease process. The goal of this study is to develop a model of early disc degeneration using an organ culture. This approach is based on our previous studies that indicate that organ culture closely models molecular events that occur in vivo in an ex vivo setting. METHODS: To mimic a degenerative insult, discs were cultured under low oxygen tension in the presence of TNF-α, IL-1β and serum limiting conditions. RESULTS: Treatment resulted in compromised cell survival and changes in cellular morphology reminiscent of degeneration. There was strong suppression in the expression of matrix proteins including collagen types 1, 2, 6 and 9, proteoglycans, aggrecan and fibromodulin. Moreover, a strong induction in expression of catabolic matrix metalloproteinases (MMP) 3, 9 and 13 with a concomitant increase in aggrecan degradation was seen. An inductive effect on NGF expression was also noticed. Although similar, nucleus pulposus and annulus fibrosus tissues showed some differences in their response to the treatment. CONCLUSIONS: Results of this study show that perturbations in microenvironmental factors result in anatomical and gene expression change within the intervertebral disc that may ultimately compromise cell function and induce pathological deficits. This system would be a valuable screening tool to investigate interventional strategies aimed at restoring disc cell function.
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spelling pubmed-33081062012-03-20 An organ culture system to model early degenerative changes of the intervertebral disc Ponnappan, Ravi K Markova, Dessislava Z Antonio, Paul JD Murray, Hallie B Vaccaro, Alexander R Shapiro, Irving M Anderson, D Greg Albert, Todd J Risbud, Makarand V Arthritis Res Ther Research Article INTRODUCTION: Back pain, a significant source of morbidity in our society, is related to the degenerative changes of the intervertebral disc. At present, the treatment of disc disease consists of therapies that are aimed at symptomatic relief. This shortcoming stems in large part from our lack of understanding of the biochemical and molecular events that drive the disease process. The goal of this study is to develop a model of early disc degeneration using an organ culture. This approach is based on our previous studies that indicate that organ culture closely models molecular events that occur in vivo in an ex vivo setting. METHODS: To mimic a degenerative insult, discs were cultured under low oxygen tension in the presence of TNF-α, IL-1β and serum limiting conditions. RESULTS: Treatment resulted in compromised cell survival and changes in cellular morphology reminiscent of degeneration. There was strong suppression in the expression of matrix proteins including collagen types 1, 2, 6 and 9, proteoglycans, aggrecan and fibromodulin. Moreover, a strong induction in expression of catabolic matrix metalloproteinases (MMP) 3, 9 and 13 with a concomitant increase in aggrecan degradation was seen. An inductive effect on NGF expression was also noticed. Although similar, nucleus pulposus and annulus fibrosus tissues showed some differences in their response to the treatment. CONCLUSIONS: Results of this study show that perturbations in microenvironmental factors result in anatomical and gene expression change within the intervertebral disc that may ultimately compromise cell function and induce pathological deficits. This system would be a valuable screening tool to investigate interventional strategies aimed at restoring disc cell function. BioMed Central 2011 2011-10-21 /pmc/articles/PMC3308106/ /pubmed/22018279 http://dx.doi.org/10.1186/ar3494 Text en Copyright ©2011 Ponnappan et al.; licensee BioMed Central Ltd.
spellingShingle Research Article
Ponnappan, Ravi K
Markova, Dessislava Z
Antonio, Paul JD
Murray, Hallie B
Vaccaro, Alexander R
Shapiro, Irving M
Anderson, D Greg
Albert, Todd J
Risbud, Makarand V
An organ culture system to model early degenerative changes of the intervertebral disc
title An organ culture system to model early degenerative changes of the intervertebral disc
title_full An organ culture system to model early degenerative changes of the intervertebral disc
title_fullStr An organ culture system to model early degenerative changes of the intervertebral disc
title_full_unstemmed An organ culture system to model early degenerative changes of the intervertebral disc
title_short An organ culture system to model early degenerative changes of the intervertebral disc
title_sort organ culture system to model early degenerative changes of the intervertebral disc
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3308106/
https://www.ncbi.nlm.nih.gov/pubmed/22018279
http://dx.doi.org/10.1186/ar3494
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