PMID- 18573993 OWN - NLM STAT- MEDLINE DCOM- 20080812 LR - 20170214 IS - 0022-0345 (Print) IS - 0022-0345 (Linking) VI - 87 IP - 7 DP - 2008 Jul TI - MMP-3 response to compressive forces in vitro and in vivo. PG - 692-6 AB - During orthodontic tooth movement, bone resorption occurs at the compression site. However, the mechanism underlying resorption remains unclear. Applying compressive force to human osteoblast-like cells grown in a 3D collagen gel, we examined gene induction by using microarray and RT-PCR analysis. Among 43 genes exhibiting significant changes, cyclo-oxygenase-2, ornithine decarboxylase, and matrix metalloproteinase-3 (MMP-3) were up-regulated, whereas membrane-bound interleukin-1 receptor accessory protein was down-regulated. The MMP-3 protein increases were further confirmed by Western blot. To ascertain whether MMP-3 is up-regulated in vivo by orthodontic force, we examined human bone samples at the compressive site by realigning the angulated molars. Immunohistochemical staining revealed MMP-3 distributed along the compressive site of the bony region within 3 days of compression. Since MMP-3 participates in degradation of a wide range of extracellular matrix molecules, we propose that MMP-3 plays an important role in bone resorption during orthodontic tooth movement. FAU - Chang, H-H AU - Chang HH AD - School of Dentistry, National Taiwan University, Taiwan. FAU - Wu, C-B AU - Wu CB FAU - Chen, Y-J AU - Chen YJ FAU - Weng, C-Y AU - Weng CY FAU - Wong, W-P AU - Wong WP FAU - Chen, Y-J AU - Chen YJ FAU - Chang, B-E AU - Chang BE FAU - Chen, M-H AU - Chen MH FAU - Yao, C-C J AU - Yao CC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Dent Res JT - Journal of dental research JID - 0354343 RN - 0 (Gels) RN - 9007-34-5 (Collagen) RN - EC 1.14.99.1 (Cyclooxygenase 2) RN - EC 1.14.99.1 (PTGS2 protein, human) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - EC 4.1.1.17 (Ornithine Decarboxylase) SB - IM MH - Adaptation, Physiological MH - Alveolar Process/*enzymology MH - Bone Remodeling/*physiology MH - Cell Culture Techniques MH - Cells, Cultured MH - Collagen MH - Cyclooxygenase 2/metabolism MH - Gels MH - Gene Expression Profiling MH - Gene Expression Regulation MH - Humans MH - Matrix Metalloproteinase 3/*metabolism MH - Models, Biological MH - Oligonucleotide Array Sequence Analysis MH - Ornithine Decarboxylase/metabolism MH - Osteoblasts/cytology/*enzymology MH - Statistics, Nonparametric MH - *Tooth Movement Techniques MH - Transcriptional Activation EDAT- 2008/06/25 09:00 MHDA- 2008/08/13 09:00 CRDT- 2008/06/25 09:00 PHST- 2008/06/25 09:00 [pubmed] PHST- 2008/08/13 09:00 [medline] PHST- 2008/06/25 09:00 [entrez] AID - 87/7/692 [pii] AID - 10.1177/154405910808700714 [doi] PST - ppublish SO - J Dent Res. 2008 Jul;87(7):692-6. doi: 10.1177/154405910808700714.