Abstract
This study evaluated the regenerative effects of platelet-rich plasma (PRP) for the degenerated intervertebral disc (IVD) in vivo. After induction of IVD degeneration in rabbits, we prepared PRP by centrifuging blood obtained from these rabbits. These PRP were injected into the nucleus pulposus (NP) of the degenerated IVDs after impregnation into gelatin hydrogel microspheres that can immobilize PRP growth factors physiochemically and release them in a sustained manner with the degradation of the microspheres. As controls, microspheres impregnated with phosphate-buffered saline (PBS) and PRP without microspheres were similarly injected. Histologically, notable progress in IVD degeneration with time courses was observed in the PBS control, PRP-only, and sham groups. In contrast, progress was remarkably suppressed over the 8-week period in the PRP group. Moreover, in immunohistochemistry, intense immunostaining for proteoglycan in the NP and inner layer of the annulus fibrosus was observed 8 weeks after administration of PRP-impregnated microspheres. Almost all microspheres were indistinct 8 weeks after the injection, and there were no apparent side effects in this study. Our results suggest that the combined administration of PRP and gelatin hydrogel microspheres into the IVD may be a promising therapeutic modality for IVD degeneration.
| Original language | English |
|---|---|
| Pages (from-to) | 147-158 |
| Number of pages | 12 |
| Journal | Tissue Engineering |
| Volume | 13 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2007 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Biophysics
- Cell Biology
- Biotechnology
Cite this
Intervertebral disc regeneration using platelet-rich plasma and biodegradable gelatin hydrogel microspheres. / Nagae, Masateru; Ikeda, Takumi; Mikami, Yasuo; Hase, Hitoshi; Ozawa, Hitoshi; Matsuda, Ken Ichi; Sakamoto, Hirotaka; Tabata, Yasuhiko; Kawata, Mitsuhiro; Kubo, Toshikazu.
In: Tissue Engineering, Vol. 13, No. 1, 01.2007, p. 147-158.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Intervertebral disc regeneration using platelet-rich plasma and biodegradable gelatin hydrogel microspheres
AU - Nagae, Masateru
AU - Ikeda, Takumi
AU - Mikami, Yasuo
AU - Hase, Hitoshi
AU - Ozawa, Hitoshi
AU - Matsuda, Ken Ichi
AU - Sakamoto, Hirotaka
AU - Tabata, Yasuhiko
AU - Kawata, Mitsuhiro
AU - Kubo, Toshikazu
PY - 2007/1
Y1 - 2007/1
N2 - This study evaluated the regenerative effects of platelet-rich plasma (PRP) for the degenerated intervertebral disc (IVD) in vivo. After induction of IVD degeneration in rabbits, we prepared PRP by centrifuging blood obtained from these rabbits. These PRP were injected into the nucleus pulposus (NP) of the degenerated IVDs after impregnation into gelatin hydrogel microspheres that can immobilize PRP growth factors physiochemically and release them in a sustained manner with the degradation of the microspheres. As controls, microspheres impregnated with phosphate-buffered saline (PBS) and PRP without microspheres were similarly injected. Histologically, notable progress in IVD degeneration with time courses was observed in the PBS control, PRP-only, and sham groups. In contrast, progress was remarkably suppressed over the 8-week period in the PRP group. Moreover, in immunohistochemistry, intense immunostaining for proteoglycan in the NP and inner layer of the annulus fibrosus was observed 8 weeks after administration of PRP-impregnated microspheres. Almost all microspheres were indistinct 8 weeks after the injection, and there were no apparent side effects in this study. Our results suggest that the combined administration of PRP and gelatin hydrogel microspheres into the IVD may be a promising therapeutic modality for IVD degeneration.
AB - This study evaluated the regenerative effects of platelet-rich plasma (PRP) for the degenerated intervertebral disc (IVD) in vivo. After induction of IVD degeneration in rabbits, we prepared PRP by centrifuging blood obtained from these rabbits. These PRP were injected into the nucleus pulposus (NP) of the degenerated IVDs after impregnation into gelatin hydrogel microspheres that can immobilize PRP growth factors physiochemically and release them in a sustained manner with the degradation of the microspheres. As controls, microspheres impregnated with phosphate-buffered saline (PBS) and PRP without microspheres were similarly injected. Histologically, notable progress in IVD degeneration with time courses was observed in the PBS control, PRP-only, and sham groups. In contrast, progress was remarkably suppressed over the 8-week period in the PRP group. Moreover, in immunohistochemistry, intense immunostaining for proteoglycan in the NP and inner layer of the annulus fibrosus was observed 8 weeks after administration of PRP-impregnated microspheres. Almost all microspheres were indistinct 8 weeks after the injection, and there were no apparent side effects in this study. Our results suggest that the combined administration of PRP and gelatin hydrogel microspheres into the IVD may be a promising therapeutic modality for IVD degeneration.
UR - http://www.scopus.com/inward/record.url?scp=33846644391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33846644391&partnerID=8YFLogxK
U2 - 10.1089/ten.2006.0042
DO - 10.1089/ten.2006.0042
M3 - Article
C2 - 17518588
AN - SCOPUS:33846644391
VL - 13
SP - 147
EP - 158
JO - Tissue Engineering
JF - Tissue Engineering
SN - 1076-3279
IS - 1
ER -