PMID- 26170859 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150714 LR - 20200930 IS - 1734-1922 (Print) IS - 1896-9151 (Electronic) IS - 1734-1922 (Linking) VI - 11 IP - 3 DP - 2015 Jun 19 TI - Influence of different intensities of vibration on proliferation and differentiation of human periodontal ligament stem cells. PG - 638-46 LID - 10.5114/aoms.2015.52370 [doi] AB - INTRODUCTION: To understand the effects of low-magnitude, high-frequency (LMHF) mechanical vibration at different intensities on human periodontal ligament stem cell (hPDLSC) proliferation and osteogenic differentiation. MATERIAL AND METHODS: The effect of vibration on hPDLSC proliferation, osteogenic differentiation, tenogenic differentiation and cytoskeleton was assessed at the cellular, genetic and protein level. RESULTS: The PDLSC proliferation was decreased after different magnitudes of mechanical vibration; however, there were no obvious senescent cells in the experimental and the static control group. Expression of osteogenesis markers was increased. The expression of alkaline phosphatase (ALP) and osteocalcin (OCN) mRNA was up-regulated at 0.1 g, 0.3 g, 0.6 g and 0.9 g magnitude, with the peak at 0.3 g. The type I collagen (Col-I) level was increased after vibration exposure at 0.1 g, 0.3 g, and 0.6 g, peaking at 0.3 g. The expression levels of both mRNA and protein of Runx2 and osterix (OSX) significantly increased at a magnitude of 0.1 g to 0.9 g, reached a peak at 0.3 g and then decreased slowly. The scleraxis, tenogenic markers, and mRNA expression decreased at 0.05 g, 0.1 g, and 0.3 g, and significantly increased at 0.6 g and 0.9 g. Compared with the static group, the F-actin stress fibers of hPDLSCs became thicker and clearer following vibration. CONCLUSIONS: The LMHF mechanical vibration promotes PDLSC osteogenic differentiation and implies the existence of a magnitude-dependent effect of vibration on determining PDLSC commitment to the osteoblast lineage. Changes in the cytoskeleton of hPDLSCs after vibration may be one of the mechanisms of the biological effects. FAU - Zhang, Chunxiang AU - Zhang C AD - Tianjin Stomatological Hospital of Nankai University, Tianjin, China. FAU - Lu, Yanqin AU - Lu Y AD - Xiangya Stomatology Hospital, Central South University, Changsha, Hunan, China. FAU - Zhang, Linkun AU - Zhang L AD - Tianjin Stomatological Hospital of Nankai University, Tianjin, China. FAU - Liu, Yang AU - Liu Y AD - State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. FAU - Zhou, Yi AU - Zhou Y AD - Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, China. FAU - Chen, Yangxi AU - Chen Y AD - State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. FAU - Yu, Haiyang AU - Yu H AD - State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. LA - eng PT - Journal Article PL - Poland TA - Arch Med Sci JT - Archives of medical science : AMS JID - 101258257 PMC - PMC4495159 OTO - NOTNLM OT - magnitude OT - mechanical vibration OT - osteogenesis OT - periodontal ligament stem cells OT - proliferation EDAT- 2015/07/15 06:00 MHDA- 2015/07/15 06:01 PMCR- 2015/06/19 CRDT- 2015/07/15 06:00 PHST- 2013/11/07 00:00 [received] PHST- 2014/01/02 00:00 [revised] PHST- 2014/03/06 00:00 [accepted] PHST- 2015/07/15 06:00 [entrez] PHST- 2015/07/15 06:00 [pubmed] PHST- 2015/07/15 06:01 [medline] PHST- 2015/06/19 00:00 [pmc-release] AID - 25319 [pii] AID - 10.5114/aoms.2015.52370 [doi] PST - ppublish SO - Arch Med Sci. 2015 Jun 19;11(3):638-46. doi: 10.5114/aoms.2015.52370.