PMID- 23239606 OWN - NLM STAT- MEDLINE DCOM- 20131029 LR - 20131121 IS - 1552-4965 (Electronic) IS - 1549-3296 (Linking) VI - 101 IP - 7 DP - 2013 Jul TI - Magnesium incorporation into beta-TCP reduced its in vivo resorption by decreasing parathormone production. PG - 1986-93 LID - 10.1002/jbm.a.34502 [doi] AB - Beta-tricalcium phosphate (beta-TCP), one of the most widely used bioresorbable materials for bone therapy, can be doped with magnesium ions, generating beta-TCMP. The objectives of this work were to evaluate, on a murine dental alveolus grafting model, the biocompatibility of beta-TCP and beta-TMCP granules by histomorphometric analysis, as well as the impact on plasmatic levels of receptor activator of nuclear factor kappaB ligand (RANK-L), osteoprotegerin (OPG), osteocalcin, osteopontin, and parathormone (PTH) during bone repair, using Luminex multiplexing technology. After grafting for 42 days, beta-TCP grafted group presented higher bioresorption and induced more newly formed bone than beta-TCMP (p < 0.05). beta-TCP grafting also induced higher plasmatic levels of RANK-L, compared to beta-TCMP and control (blood clot) groups at 21st day (p < 0.05). PTH, which remained at low levels in control group, presented a time-dependent increase in grafted groups, attaining significantly higher levels with beta-TCP by the 42nd day (p < 0.05). RANK-L/OPG ratio increased on beta-TCP group and attained a peak on the 21st day. In conclusion, beta-TCP granules were more bioresorbable and osteogenic than beta-TCMP granules, and the resorption of both materials might have been affected by osteoclastogenesis modulated by changes in the plasmatic levels of PTH and RANK-L. CI - Copyright (c) 2012 Wiley Periodicals, Inc. FAU - Yassuda, Debora H AU - Yassuda DH AD - Department of Metallurgy and Materials, Federal University of Rio de Janeiro/COPPE, Rio de Janeiro, RJ, Brazil. FAU - Costa, Neusa F M AU - Costa NF FAU - Fernandes, Gustavo O AU - Fernandes GO FAU - Alves, Gutemberg G AU - Alves GG FAU - Granjeiro, Jose M AU - Granjeiro JM FAU - Soares, Gloria de A AU - Soares Gde A LA - eng PT - Journal Article DEP - 20121213 PL - United States TA - J Biomed Mater Res A JT - Journal of biomedical materials research. Part A JID - 101234237 RN - 0 (Biocompatible Materials) RN - 0 (Calcium Phosphates) RN - 0 (Osteoprotegerin) RN - 0 (Parathyroid Hormone) RN - 0 (Powders) RN - 0 (RANK Ligand) RN - 0 (beta-tricalcium phosphate) RN - 104982-03-8 (Osteocalcin) RN - 106441-73-0 (Osteopontin) RN - I38ZP9992A (Magnesium) SB - IM MH - Animals MH - Biocompatible Materials/*chemistry MH - Calcium Phosphates/*chemistry/*pharmacology MH - Crystallization MH - Immunoassay MH - Magnesium/*chemistry/*pharmacology MH - Materials Testing MH - Osteocalcin/blood MH - Osteogenesis MH - Osteopontin/blood MH - Osteoprotegerin/blood MH - Parathyroid Hormone/*biosynthesis MH - Powders MH - RANK Ligand/blood MH - Rats MH - Rats, Wistar MH - Tooth Socket MH - X-Ray Diffraction EDAT- 2012/12/15 06:00 MHDA- 2013/10/30 06:00 CRDT- 2012/12/15 06:00 PHST- 2012/07/17 00:00 [received] PHST- 2012/10/05 00:00 [revised] PHST- 2012/10/11 00:00 [accepted] PHST- 2012/12/15 06:00 [entrez] PHST- 2012/12/15 06:00 [pubmed] PHST- 2013/10/30 06:00 [medline] AID - 10.1002/jbm.a.34502 [doi] PST - ppublish SO - J Biomed Mater Res A. 2013 Jul;101(7):1986-93. doi: 10.1002/jbm.a.34502. Epub 2012 Dec 13.