The basic study for the progression of the order-made medicine by cytokines for periodontal tissue regeneration

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In vivo study, two weeks after the BDNF application, periodontal tissue regeneration was insufficient, but invasion of epithelial cells to defects was not observed. TrkB, PCNA and OPN-positive cells were detected on the denuded root surface, around the regenerating alveolar bone and in the soft connective tissue of regenerating periodontal tissues. TrkB positive cells may quickly responded to applied BDNF and started to proliferate and differentiate for the periodontal tissue regeneration within 2 weeks. Furthermore, we investigated the trkB single nucleotide polymorphisms(SNPs) which are reported to have some relationships with Alzheimer' s disease. We also compared effect of BDNF on HAS-1 mRNA expression on human gingival fibroblasts with the results of SNP analyses