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Erschienen in: Journal of Artificial Organs 4/2012

01.12.2012 | Original Article

Delivery system for autologous growth factors fabricated with low-molecular-weight heparin and protamine to attenuate ischemic hind-limb loss in a mouse model

verfasst von: Shingo Nakamura, Megumi Takikawa, Masayuki Ishihara, Takefumi Nakayama, Satoko Kishimoto, Susumu Isoda, Yuichi Ozeki, Masahiro Sato, Tadaaki Maehara

Erschienen in: Journal of Artificial Organs | Ausgabe 4/2012

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Abstract

Frozen and thawed platelet-rich plasma (PRP) contains high concentrations of various growth factors, such as fibroblast growth factor (FGF)-2, vascular endothelial growth factor, and hepatocyte growth factor. We previously reported that low-molecular-weight heparin/protamine microparticles (LH/P MPs) are useful as biodegradable carriers for the controlled release of FGF-2. In this study, we examined the ability of PRP/LH/P MPs to prevent limb loss in an induced ischemic hind-limb model that used adult BALB/c-nu/nu male mice. One day after inducing ischemia, intramuscular injections of a PRP/LH/P MPs solution were administered into several sites of the ischemic hind limb. Seven days and onward after the injections, the PRP/LH/P MPs-treated and PRP-treated groups recovered from ischemia, as reflected by the improved oxygen saturation. In the PRP-treated group, however, the level of recovery of oxygen saturation after ischemia decreased after 14 days. From the 21st day onward, there was a significant difference between those two groups. In the LH/P MPs-treated group, a partial recovery occurred only in the early period. The saline-treated group (i.e., the control) and the noninjection group (i.e., ischemia only) exhibited no recovery. The limb survival rate at 1 year in the ischemia-induced mice injected with PRP/LH/P MPs was approximately 25 % (two of eight mice) but was absent in the other groups.
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Metadaten
Titel
Delivery system for autologous growth factors fabricated with low-molecular-weight heparin and protamine to attenuate ischemic hind-limb loss in a mouse model
verfasst von
Shingo Nakamura
Megumi Takikawa
Masayuki Ishihara
Takefumi Nakayama
Satoko Kishimoto
Susumu Isoda
Yuichi Ozeki
Masahiro Sato
Tadaaki Maehara
Publikationsdatum
01.12.2012
Verlag
Springer Japan
Erschienen in
Journal of Artificial Organs / Ausgabe 4/2012
Print ISSN: 1434-7229
Elektronische ISSN: 1619-0904
DOI
https://doi.org/10.1007/s10047-012-0658-0

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