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Oral & Craniofacial Tissue Engineering

Edited by Ole T. Jensen, DDS, MS

Official Journal of the Tissue Engineering Society, the Chinese Society of Oral Biomedicine, and the Japanese Society of Regenerative Medicine

ISSN (print) 2158-3722 • ISSN (online) 2158-3706

Oral & Craniofacial Tissue Engineering
Spring 2011
Volume 1 , Issue 1

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Effect of Gabapentin-Lactam and Gamma-AminobutyricAcid/Lactam Analogs on Proliferation and Phenotype of Ovine Mesenchymal Stem Cells

Sebastian Sauerbier, MD, DDS/Ralf Gutwald, MD, DDS/Margit Wiedmann-Al-Ahmad, PhD/Martin Wolkewitz, PhD/Jörg Haberstroh, DVM/Julia Obermeyer, DDS/Arne Kuenz, DDS/Helene Betz/Franziska Wolter, DDS/Fabian Duttenhöfer, MD/Rainer Schmelzeisen, MD, DDS/Heiner Nagursky, PhD/Susanne Proksch, DMD/Ali Al-Ahmad, PhD

Pages: 20–28

Purpose: Classic tissue engineering consists of three components: scaffold, cells, and growth or differentiation factors. Currently, expensive bone morphogenetic proteins are the most common substance used for hard tissue regeneration. An alternative could be gamma-aminobutyric acid/lactam (GABA-lactam) analogs. Materials and Methods: The effects of gabapentin-lactam, cis- and trans-8-tertbutyl-GABA-pentin-lactam (trans-TB-GBP-L), and phenyl-GABA-lactam were tested in this study on ovine mesenchymal stem cell (MSC) proliferation. MSCs were selected from bone marrow aspirate concentrate by plastic adherence and amplified. Aliquots of the cells were incubated in medium, with four different concentrations of the GABA-lactam analogs dissolved in dimethyl sulfoxide. Cells in medium with and without dimethyl sulfoxide served as controls. Cell proliferation was tested with a nonradioactive assay. Before and after GABA-lactam analog influence, the MSC character was evaluated by the ability of the cells to differentiate into osteoblasts, chondrocytes, and adipocytes. Results: Proliferation was significantly increased under the influence of the analogs, depending on their concentration. MSCs cultured in 1 nmol/L trans-TB-GBP-L showed the highest proliferation rate. The MSC character was not altered. Conclusions: GABA-lactam analogs could be suited to stimulate MSC proliferation for tissue engineering applications. Further in vivo studies are necessary to evaluate the possible clinical potential of GABA-lactam analogs for hard tissue regeneration. Oral Craniofac Tissue Eng 2011;1:20–28

Key words: cell differentiation, GABA-lactam analogs, gamma-aminobutyric acid, mesenchymal stem cells

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