Effect of Platelet Rich Plasma on Vascularization of Tissue-Engineered Bone

Objective: To study the effects of platelet rich plasma (PRP) on vascularization of tissue-engineered bone.

Methods: Bone marrow stromal cell (BMSC) were isolated from iliac bone of dogs. PRP was obtained from the same dog and demineralized bone matrix (DBM) was prepared from homologous bone. Twelve dogs were divided into three groups and the back of each dog was divided into four areas. The DBM- BMSC- PRP was implanted in the area A and B; the DBM-BMSC without PRP was implanted in the area C and D. The implants in the areas A and C were wrapped using myo-fascia with blood vessel of latissimus dorsi. The implants in the area B and D were wrapped using superfacial fascia of the back without blood vessel. The implants were taken out 4, 8 and 12 weeks later for examination.

Results: The degree of calcification and blood vessel formation of the implants was A > B > C > D.

Conclusions: Both PRP and vessels of latissimus dorsi muscle could promote calcification and vascularization in tissue-engineered bone, when used separately or in combination.