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A Proinflammatory, Degenerative Organ Culture Model to Simulate Early-Stage Intervertebral Disc Disease.
Published on: February 14, 2021
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Fibronectin expression in the intervertebral disc of monkey
Umile Giuseppe Longo, Purification Ripalda, Giuseppe Salvatore
1Department of Orthopaedic and Trauma Surgery, Campus Bio-Medico University, Via Alvaro del Portillo, 200, 00128 Trigoria, Rome, Italy. g.longo@unicampus.it.
Current Stem Cell Research & Therapy
|July 12, 2014
Summary
Fibronectin is present in the outer regions of monkey intervertebral discs but not the center. This finding may help understand disc degeneration and extracellular matrix organization.
Area of Science:
- Biochemistry
- Cell Biology
- Anatomy
Background:
- Fibronectin is a key extracellular matrix glycoprotein in vertebrates.
- Its expression in the intervertebral disc (IVD) is not well understood.
- Integrin receptors influence cell activities, potentially involving fibronectin.
Purpose of the Study:
- To map fibronectin distribution across different IVD regions.
- To examine fibronectin expression in IVDs from various spinal levels in monkeys.
Main Methods:
- Immunohistochemistry was used to detect fibronectin.
- Spinal segments from nine cynomolgus monkeys were analyzed.
- Sections included endplates, annulus fibrosus, and nucleus pulposus.
Main Results:
- Fibronectin immunoreactivity was observed in endplates, peripheral annulus fibrosus, and longitudinal ligaments.
- No fibronectin was detected in the nucleus pulposus or central annulus fibrosus.
- No significant differences in fibronectin expression were found across spinal levels or individual monkeys.
Conclusions:
- Fibronectin likely contributes to the structural organization of the IVD extracellular matrix.
- Understanding IVD matrix composition aids in elucidating disc pathologies.
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