Original scientific paper

The influence of transforming growth factor beta-1 proven in autologous omental graft on the healing of critical size defects in rabbit radius.

Ozren Smolec ; Clinic of Surgery, Orthopaedics and Ophthalmology, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Berislav Radišić ; Clinic of Surgery, Orthopaedics and Ophthalmology, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Zhongjie Liu ; China Agricultural University, Beijing, PR China
Fan Kai ; China Agricultural University, Beijing, PR China
Nika Brkljača Bottegaro ; Clinic of Surgery, Orthopaedics and Ophthalmology, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Marko Pećin ; Clinic of Surgery, Orthopaedics and Ophthalmology, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Danijela Jelčić ; Police Academy Zagreb, Croatia
Josip Kos ; Clinic of Surgery, Orthopaedics and Ophthalmology, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia

Abstract

Fracture healing is a complex physiological process. Multiple factors regulate this cascade of molecular reactions, affecting different sites in the osteoblast lineage, through various processes such as: migration, proliferation, chemotaxis, differentiation, inhibition, and extracellular protein synthesis. The omentum is a serous membrane made up of a lattice of blood vessels and fat. Basically, it is a highly vasculated organ with a rich source of angiogenic factors that promote the growth of blood vessels into whatever tissue it is placed close to. Recent studies have revealed that the omentum, apart from being a great source of various growth factors, also contains omnipotent stem cells that can differentiate into a variety of cell types. The study was carried out on 16 adult male New Zealand rabbits in the same condition. A large segmental defect was created in the radius of each animal in groups A and B. In group B the defect was filled with a piece omental fat tissue. The animals were euthanized 56 days after the operation and the bones removed for histomorphometric analysis. Histomorphometric analysis was performed. The osteoblast interface (Ob.S/BS) proved to be the statistically significant parameter (P = 0.005). An osteoblast interface was found in the treated group in contrast to the control. The surface of trabecula covered with the osteiod and osteoblast interface showed a high degree of positive linear correlation, in both the control and the treated group. Our study shows that the statistically significant osteoblast interface leads to the conclusion that omental fat tissue has a certain influence on bone turnover, especially on the formation of the newly-created bone.

Keywords

rabbit; omentum; fat tissue; bone; healing

Hrčak ID:

99795

URI

https://hrcak.srce.hr/99795

Publication date:

28.3.2013.

Article data in other languages: croatian

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