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The effect of combination therapy on critical-size bone defects using non-activated platelet-rich plasma and adipose-derived stem cells

 Woonhyeok Jeong  ;  Young Seok Kim  ;  Tai Suk Roh  ;  Eun Hye Kang  ;  Bok Ki Jung  ;  In Sik Yun 
 CHILDS NERVOUS SYSTEM, Vol.36(1) : 145-151, 2020-01 
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Mesenchymal stem cells ; Osteogenesis ; Platelet-rich plasma ; Skull
Purpose: Non-activated platelet-rich plasma (nPRP) slowly releases growth factors that induce bone regeneration. Adipose tissue-derived stem cells (ASCs) are also known to induce osteoblast differentiation. In this study, we investigated the combined effect of nPRP and ASC treatment compared with single therapy on bone regeneration. Methods: Thirty New Zealand white rabbits with 15 × 15 mm2 calvarial defects were randomly divided into four treatment groups: control, nPRP, ASC, or nPRP + ASC groups. For treatment, rabbits received a collagen sponge (Gelfoam®) saturated with 1 ml normal saline (controls), 1 ml non-activated PRP (nPRP group), 2 × 106 ASCs (ASCs group), or 2 × 106 ASCs plus l ml nPRP (nPRP + ASCs group). After 16 weeks, bone volume and new bone surface area were measured, using three-dimensional computed tomography and digital photography. Bone regeneration was also histologically analyzed. Results: Bone surface area in the nPRP group was significantly higher than both the control and ASC groups (p < 0.001 and p < 0.01, respectively). The percentage of regenerated bone surface area in the nPRP + ASC group was also significantly higher than the corresponding ratios in the control group (p < 0.001). The volume of new bone in the nPRP group was increased compared to the controls (p < 0.05). Conclusion: Our results demonstrate that slow-releasing growth factors from nPRP did not influence ASC activation in this model of bone healing. PRP activation is important for the success of combination therapy using nPRP and ASCs.
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1. College of Medicine (의과대학) > Dept. of Plastic and Reconstructive Surgery (성형외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Young Seok(김영석) ORCID logo https://orcid.org/0000-0002-0981-2107
Roh, Tai Suk(노태석) ORCID logo https://orcid.org/0000-0001-8681-159X
Yun, In Sik(윤인식) ORCID logo https://orcid.org/0000-0003-1103-7047
Jung, Bok Ki(정복기) ORCID logo https://orcid.org/0000-0002-4347-560X
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