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Comparative Study on Acellular Dermal Graft Versus Propylene Mesh Both Either Loaded or Unloaded with BM-MSCs in Healing of Skull Bone Defect in Rats: Histological and Immunohistochemical Study
Int J Stem Cells 2018;11:216-226
Published online November 30, 2018;  
© 2018 Korean Society for Stem Cell Research.

Lobna Elkhateb1, Adel Zohdy1, Suzi Sobhy Atalla1, Manal Hassan Moussa1, Ghada Galal Hamam1, Fatma Abd Elkarim Abu Zahra2

1Department of Histology and Cell Biology, Faculty of Medicine Ain Shams University, Cairo, Egypt
2Medical Research Center, Ain Shams University, Cairo, Egypt
Correspondence to: Ghada Galal Hamam
Department of Histology and Cell Biology, Faculty of Medicine Ain Shams University, Abbassyia, Cairo 11566, Egypt
Tel: +201003960601, Fax: +20 223496662
Received March 4, 2018; Revised April 17, 2018; Accepted April 23, 2018.
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Bone defect occurs as a consequence of many conditions. Diseased bones don’t heal properly and defects in face area need proper bone reconstruction to avoid psychological and social problems. Tissue engineering is an emerging new modality of treatment. We thought to study different methods to fill skull bone defect in rats in order to find the most safe and effective method. So, this study was designed to evaluate the efficacy of acellular dermal graft (ADM) versus propylene mesh both either loaded or unloaded with bone marrow derived mesenchymal stem cells (BM-MSCs) in healing of skull bone defect of a 5 mm diameter. The study included 36 adult male Wistar albino rats that were divided into three groups according to the way of filling skull bone defect. Group I: Ia (sham control), Ib (negative control). Group II: IIa (unseeded propylene), IIb (seeded propylene) and Group III: IIIa (unseeded ADM), IIIb (seeded ADM). The trephine operation was done on the left parietal bone. Specimens were collected four weeks postoperative and processed for H&E, osteopontin immunohistochemistry and scanning electron microscope. Morphometric and statistical analysis were also performed. After studying the results of the experiment, we found that propylene mesh and ADM were suitable scaffolds that could support new bone formation in clavarial bone defect. Healing of skull bone defect was better in rats that received seeded scaffolds more than rats with unseeded scaffolds. The seeded ADM showed significant increase in bone forming activity as confirmed by histomorphometric and statistical results.
Keywords : Bone defect, Propylene mesh, Acellular dermal graft, Histology, Bone marrow derived mesenchymal stem cells, Immunohistochemical

November 2018, 11 (2)