Evaluation of in vitro biocompatibility of scaffolds for the repair of bone defects

Home/2021, Vol. 9, No. 2/Evaluation of in vitro biocompatibility of scaffolds for the repair of bone defects

Cell and Organ Transplantology. 2021; 9(2):in press.
DOI: 10.22494/cot.v9i2.128

Evaluation of in vitro biocompatibility of scaffolds for the repair of bone defects

Bezdieniezhnykh N.1, Holiuk Ye.2, Gerasymenko S.2, Saulenko K.2, Mayko V.3, Lykhova O.1

  • 1R. E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, National Academy of Sciences of Ukraine, Kyiv, Ukraine
  • 2State Institute of Traumatology and Orthopedics, National Academy of Medical Sciences of Ukraine, Kyiv, Ukraine
  • 3M. I. Pyrogov Vinnytsia Regional Clinical Hospital, Vinnytsia , Ukraine

Abstract

The use of bone scaffolds in traumatology and orthopedics is an extremely important issue. The growing number of cases of significant bone defects, in particular after revision arthroplasty, combat trauma and due to the introduction of new methods of reconstructive surgery of bones and joints, requires more detailed studies of the using different osteoplastic materials.
Materials and methods. As scaffolds used 4 types of materials that are most often used in the clinic for the correction of bone defects – ceramic hydroxylapatite, beta-tricalcium phosphate, allogeneic bone matrix treated with gamma irradiation, allogeneic bone matrix scaffold. The effect of matrices on the viability of normal human fibroblasts (M19 cell line) in cell culture in vitro was studied. The viability of cells after their co-cultivation with scaffolds was determined by colorimetric method by staining with crystal violet. To obtain an osteoinductive effect used platelet-rich plasma (PRP), standardized by the method of Araki with some modifications. The proliferative activity of fibroblasts was assessed by the level of expression of the proliferation marker Ki-67 by immunocytochemical analysis.
Results. It was found that the least pronounced antiproliferative effect is shown by allogeneic bone matrix treated with gamma irradiation. Data on the complex effect of co-cultivation of fibroblasts with scaffolds in the presence of PRP on cell viability and proliferative activity were obtained. It was found that PRP improves the survival of fibroblasts by 15-30 % and increases their proliferative activity by 35-75 %. Delipidization with 70 % ethyl alcohol for allogeneic bone matrix scaffolds, heat-treated by local bone bank technology, increased its biocompatibility with human fibroblasts.
Conclusions. According to the results of a comparative analysis of the impact of different scaffolds on the viability of normal human fibroblasts, it was found that scaffolds from allogeneic bone matrix have the least pronounced antiproliferative effect. Platelet-rich plasma has been shown to improve fibroblast survival and increase their proliferative activity.

Key words: scaffold; allogeneic bone matrix; platelet-rich plasma; tissue engineering 

 

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Bezdieniezhnykh N, Holiuk Ye, Gerasymenko S, Saulenko K, Mayko V, Lykhova O. Evaluation of in vitro biocompatibility of scaffolds for the repair of bone defects. Cell Organ Transpl. 2021; 9(2):in press. doi:10.22494/cot.v9i2.128

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