» Articles » PMID: 9455664

Elevated Synthesis of Biglycan and Decorin in an Ovine Annular Lesion Model of Experimental Disc Degeneration

Overview
Journal Eur Spine J
Specialty Orthopedics
Date 1997 Jan 1
PMID 9455664
Citations 15
Authors
Affiliations
Soon will be listed here.
Abstract

The aim of this study was to extend our earlier observations on the changes that occur in the proteoglycans (PGs) of discs subjected to experimental injury to the annulus fibrosus (AF). We employed the alginate bead culture method to examine the metabolism of the dermatan sulphate (DS) containing PGs by cells derived from different regions of ovine discs that had been subjected to experimental annular injury. This was compared with the metabolism of the DS-PGs by cells isolated from equivalent regions of normal sham-operated discs. Six months after induction of the annular lesion, AF cells isolated from the lesion produced significantly higher levels of decorin and biglycan in alginate bead culture than did cells from equivalent zones of the controls. Decorin and biglycan were identified in culture media samples by immunoblotting, using specific antibodies (6-B-6, LF-96), and also by positive identification of their de-glycosylated core proteins. The core protein of the DS-PGs has been shown to inhibit type I/II collagen fibrillogenesis, to negatively regulate the action of transforming growth factor-beta (TGF-beta) and to diminish cellular proliferation in vitro; events which may be detrimental to tissue repair. The findings are therefore consistent with our previous observation the annular lesions in the avascular inner annulus have no capacity to heal.

Citing Articles

Potential molecular targets and drugs for basement membranes-related intervertebral disk degeneration through bioinformatics analysis and molecular docking.

Zhou Z, Qin W, Zhang P, He J, Cheng Z, Gong Y BMC Musculoskelet Disord. 2023; 24(1):772.

PMID: 37784117 PMC: 10544312. DOI: 10.1186/s12891-023-06891-z.


Nonviral overexpression of Scleraxis or Mohawk drives reprogramming of degenerate human annulus fibrosus cells from a diseased to a healthy phenotype.

Tang S, Gantt C, Salazar Puerta A, Bodine L, Khan S, Higuita-Castro N JOR Spine. 2023; 6(3):e1270.

PMID: 37780832 PMC: 10540831. DOI: 10.1002/jsp2.1270.


Comparison and optimization of sheep in vivo intervertebral disc injury model.

Constant C, Hom W, Nehrbass D, Carmel E, Albers C, Deml M JOR Spine. 2022; 5(2):e1198.

PMID: 35783908 PMC: 9238284. DOI: 10.1002/jsp2.1198.


Spatiotemporal Expression of 3-B-3(-) and 7-D-4 Chondroitin Sulfation, Tissue Remodeling, and Attempted Repair in an Ovine Model of Intervertebral Disc Degeneration.

Farrugia B, Smith S, Shu C, Melrose J Cartilage. 2019; 11(2):234-250.

PMID: 31578084 PMC: 7097983. DOI: 10.1177/1947603519876354.


Effects of Level, Loading Rate, Injury and Repair on Biomechanical Response of Ovine Cervical Intervertebral Discs.

Long R, Zderic I, Gueorguiev B, Ferguson S, Alini M, Grad S Ann Biomed Eng. 2018; 46(11):1911-1920.

PMID: 29926304 PMC: 6279553. DOI: 10.1007/s10439-018-2077-8.


References
1.
Hampton D, Laros G, McCarron R, Franks D . Healing potential of the anulus fibrosus. Spine (Phila Pa 1976). 1989; 14(4):398-401. DOI: 10.1097/00007632-198904000-00009. View

2.
Collier S, Ghosh P . Effects of transforming growth factor beta on proteoglycan synthesis by cell and explant cultures derived from the knee joint meniscus. Osteoarthritis Cartilage. 1995; 3(2):127-38. DOI: 10.1016/s1063-4584(05)80045-7. View

3.
Westergren-Thorsson G, Antonsson P, Malmstrom A, Heinegard D, Oldberg A . The synthesis of a family of structurally related proteoglycans in fibroblasts is differently regulated by TFG-beta. Matrix. 1991; 11(3):177-83. DOI: 10.1016/s0934-8832(11)80156-3. View

4.
Westergren-Thorsson G, Hernnas J, Sarnstrand B, Oldberg A, Heinegard D, Malmstrom A . Altered expression of small proteoglycans, collagen, and transforming growth factor-beta 1 in developing bleomycin-induced pulmonary fibrosis in rats. J Clin Invest. 1993; 92(2):632-7. PMC: 294895. DOI: 10.1172/JCI116631. View

5.
Yeo T, Brown L, Dvorak H . Alterations in proteoglycan synthesis common to healing wounds and tumors. Am J Pathol. 1991; 138(6):1437-50. PMC: 1886391. View