PMID- 26994898 OWN - NLM STAT- MEDLINE DCOM- 20161213 LR - 20190816 IS - 1643-3750 (Electronic) IS - 1234-1010 (Print) IS - 1234-1010 (Linking) VI - 22 DP - 2016 Mar 20 TI - Effects of Shock Waves on Expression of IL-6, IL-8, MCP-1, and TNF-alpha Expression by Human Periodontal Ligament Fibroblasts: An In Vitro Study. PG - 914-21 AB - BACKGROUND: Extracorporeal shock wave therapy (ESWT) can modulate cell behavior through mechanical information transduction. Human periodontal ligament fibroblasts (hPDLF) are sensible to mechanical stimulus and can express pro-inflammatory molecules in response. The aim of this study was to evaluate the impacts of shock waves on interleukin-6 (IL-6), interleukin-8 (IL-8), monocyte chemotactic protein 1 (MCP-1), and tumor necrosis factor-alpha (TNF-alpha) expression by hPDLF. MATERIAL/METHODS: After being treated by shock waves with different parameters (100-500 times, 0.05-0.19 mJ/mm(2)), cell viability was tested using CCK-8. IL-6, IL-8, MCP-1, and TNF-alpha gene expression was analyzed by quantitative real-time polymerase chain reaction (qRT-PCR) and IL-6 and IL-8 protein was measured by enzyme-linked immunosorbent assay (ELISA) at different time points. RESULTS: Shock waves with the parameters used in this study had no significant effects on the viability of hPDLF. A statistical inhibition of IL-6, IL-8, MCP-1, and TNF-alpha expression during the first few hours was observed (P<0.05). Expression of IL-8 was significantly elevated in the group receiving the most pulses of shock wave (500 times) after 4 h (P<0.05). At 8 h and 24 h, all treated groups demonstrated significantly enhanced IL-6 expression (P<0.05). TNF-alpha expression in the groups receiving more shock pulses (300, 500 times) or the highest energy shock treatment (0.19 mJ/mm(2)) was statistically decreased (P<0.05) at 24 h. CONCLUSIONS: Under the condition of this study, a shock wave with energy density no higher than 0.19 mJ/mm(2) and pulses no more than 500 times elicited no negative effects on cell viability of hPDLF. After a uniform initial inhibition impact on expression of inflammatory mediators, a shock wave could cause dose-related up-regulation of IL-6 and IL-8 and down-regulation of TNF-alpha. FAU - Cai, Zhiyu AU - Cai Z AD - School and Hospital of Stomatology, Fujian Medical University, Fuzhou, Fujian, China (mainland). FAU - Falkensammer, Frank AU - Falkensammer F AD - Department of Orthodontics, Bernhard Gottlieb University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria. FAU - Andrukhov, Oleh AU - Andrukhov O AD - Competence Centre of Periodontal Research, Bernhard Gottlieb School of Dentistry, Medical University of Vienna, Vienna, Austria. FAU - Chen, Jiang AU - Chen J AD - School and Hospital of Stomatology, Fujian Medical University, Fuzhou, Fujian, China (mainland). FAU - Mittermayr, Rainer AU - Mittermayr R AD - The Austrian Cluster for Tissue Regeneration, Ludwig Boltzmann Institute for Experimental and Clinical Traumatology/Austrian Workers' Compensation Board (AUVA) Research Center, Vienna, Austria. FAU - Rausch-Fan, Xiaohui AU - Rausch-Fan X AD - Competence Centre of Periodontal Research, Bernhard Gottlieb School of Dentistry, Medical University of Vienna, Vienna, Austria. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160320 PL - United States TA - Med Sci Monit JT - Medical science monitor : international medical journal of experimental and clinical research JID - 9609063 RN - 0 (CCL2 protein, human) RN - 0 (CXCL8 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (IL6 protein, human) RN - 0 (Interleukin-6) RN - 0 (Interleukin-8) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Adolescent MH - Cell Proliferation MH - Cell Survival/genetics MH - Chemokine CCL2/*genetics/metabolism MH - Fibroblasts/cytology/*metabolism MH - *Gene Expression Regulation MH - *High-Energy Shock Waves MH - Humans MH - Interleukin-6/*genetics/metabolism MH - Interleukin-8/*genetics/metabolism MH - Male MH - Periodontal Ligament/*cytology MH - Time Factors MH - Tumor Necrosis Factor-alpha/*genetics/metabolism PMC - PMC4805137 EDAT- 2016/03/21 06:00 MHDA- 2016/12/15 06:00 PMCR- 2016/03/20 CRDT- 2016/03/21 06:00 PHST- 2016/03/21 06:00 [entrez] PHST- 2016/03/21 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] PHST- 2016/03/20 00:00 [pmc-release] AID - 897507 [pii] AID - 10.12659/msm.897507 [doi] PST - epublish SO - Med Sci Monit. 2016 Mar 20;22:914-21. doi: 10.12659/msm.897507.