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Effect of platelet-rich plasma on the in vitro proliferation and osteogenic differentiation of human mesenchymal stem cells on distinct calcium phosphate scaffolds: the specific surface area makes a difference.

Abstract：

:The in vitro effect of platelet-rich plasma (PRP) on cell loading, proliferation, and osteogenic differentiation of human mesenchymal stem cells (MSC) is assessed on distinct resorbable and synthetic calcium phosphate scaffolds. A high specific surface area scaffold composed of calcium-deficient hydroxyapatite (CDHA; 48m2/g) is compared with one made out of beta-tricalcium phosphate (beta-TCP; surface area <0.5 m2/g). Fivefold concentrated fresh PRP is applied to scaffolds loaded with 2 x 10(5) MSC (n = 5). These constructs are kept in a medium with osteogenic supplements for 3 weeks. The addition of PRP leads to a higher cell loading efficiency of MSC on CDHA (p = 0.0001), that reaches the values of beta-TCP. Proliferation over 21 days is improved by PRP both on CDHA (p = 0.0001) and beta-TCP (p = 0.014) compared to MSC/calcium phosphate composites. Without the addition of PRP, CDHA has a lower cell loading efficiency (p= 0.0001) and proliferation (p= 0.001) than beta-TCP. The ALP activity is higher in the MSC/ceramics groups than in the monolayer controls (p<0.05). The addition of PRP does not significantly affect ALP activity. However, ALP activity varies considerably within the cell donors and different PRP-pools (p = 0.001), while the cell numbers do not vary within these two parameters. PRP generates a positive effect on the loading efficiency of MSC on the high specific surface scaffold CDHA that thereby reaches the loading efficiency of beta-TCP. PRP improved proliferation, but its osteogenic properties on both calcium phosphate scaffolds are weak.

journal_name

J Biomater Appl

journal_title

Journal of biomaterials applications

authors

Kasten P,Vogel J,Beyen I,Weiss S,Niemeyer P,Leo A,Lüginbuhl R

doi

10.1177/0885328207088269

subject

Has Abstract

pub_date

2008-09-01 00:00:00

pages

169-88

issue

eissn

0885-3282

issn

1530-8022

pii

0885328207088269

journal_volume

pub_type

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Effect of platelet-rich plasma on the in vitro proliferation and osteogenic differentiation of human mesenchymal stem cells on distinct calcium phosphate scaffolds: the specific surface area makes a difference.