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Published in: Arthritis Research & Therapy 6/2012

Open Access 01-12-2012 | Research article

Effect of autologous platelet-rich plasma-releasate on intervertebral disc degeneration in the rabbit anular puncture model: a preclinical study

Authors: Shuji Obata, Koji Akeda, Takao Imanishi, Koichi Masuda, Won Bae, Ryo Morimoto, Yumiko Asanuma, Yuichi Kasai, Atsumasa Uchida, Akihiro Sudo

Published in: Arthritis Research & Therapy | Issue 6/2012

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Abstract

Introduction

Platelet-rich plasma (PRP) is a fraction of plasma in which several growth factors are concentrated at high levels. The active soluble releasate isolated following platelet activation of PRP (PRP-releasate) has been demonstrated to stimulate the metabolism of IVD cells in vitro. The in vivo effect of PRP-releasate on degenerated IVD remains unknown. The purpose of this study was to determine the reparative effects of autologous PRP-releasate on degenerated intervertebral discs (IVDs).

Methods

To induce disc degeneration, New Zealand white rabbits (n = 12) received anular puncture in two noncontiguous discs. Autologous PRP and PPP (platelet-poor plasma) were isolated from fresh blood using two centrifugation techniques. Four weeks after the initial puncture, releasate isolated from clotted PPP or PRP (PPP- or PRP-releasate), or phosphate-buffered saline (PBS; control) was injected into the punctured discs. Disc height, magnetic resonance imaging (MRI) T2-mapping and histology were assessed.

Results

Anular puncture produced a consistent disc narrowing within four weeks. PRP-releasate induced a statistically significant restoration of disc height (PRP vs. PPP and PBS, P<0.05). In T2-quantification, the mean T2-values of the nucleus pulposus (NP) and anulus fibrosus (AF) of the discs were not significantly different among the three treatment groups. Histologically, the number of chondrocyte-like cells was significantly higher in the discs injected with PRP-releasate compared to that with PBS.

Conclusions

The administration of active PRP-releasate induced a reparative effect on rabbit degenerated IVDs. The results of this study suggest that the use of autologous PRP-releasate is safe and can lead to a clinical application for IVD degeneration.
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Metadata
Title
Effect of autologous platelet-rich plasma-releasate on intervertebral disc degeneration in the rabbit anular puncture model: a preclinical study
Authors
Shuji Obata
Koji Akeda
Takao Imanishi
Koichi Masuda
Won Bae
Ryo Morimoto
Yumiko Asanuma
Yuichi Kasai
Atsumasa Uchida
Akihiro Sudo
Publication date
01-12-2012
Publisher
BioMed Central
Published in
Arthritis Research & Therapy / Issue 6/2012
Electronic ISSN: 1478-6362
DOI
https://doi.org/10.1186/ar4084

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