PMID- 33425299 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210112 IS - 2008-9783 (Print) IS - 2228-6721 (Electronic) IS - 2008-9783 (Linking) VI - 11 IP - 4 DP - 2020 Fall TI - Photobiomodulation Therapy in the Proliferation and Differentiation of Human Umbilical Cord Mesenchymal Stem Cells: An In Vitro Study. PG - 469-474 LID - 10.34172/jlms.2020.73 [doi] AB - Introduction: Since photobiomodulation therapy (PBMT) favors in vitro mesenchymal stem cell (MSC) preconditioning before MSC transplantation, increasing the proliferation of these cells without molecular injuries by conserving their characteristics, in the present in vitro study we analyzed the effect of PBMT on the proliferation and osteogenic differentiation of human umbilical cord mesenchymal stem cells (hUCMSCs). Methods: Irradiation with an InGaAIP Laser (660 nm, 10 mW, 2.5 J/cm(2) , 0.08 cm(2) spot size, and 10 s) was carried out. The cells were divided into four groups: CONTROL [cells grown in Dulbecco's Modified Eagle Medium (DMEM)], OSTEO (cells grown in an osteogenic medium); PBMT (cells grown in DMEM+PBMT), and OSTEO+PBMT (cells grown in an osteogenic medium plus PBMT). The cell proliferation curve was obtained over periods of 24, 48 and 72 hours using the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. Osteogenic differentiation was analyzed by the formation of calcium nodules over periods of 7, 14 and 21 days. Morphometric analysis was performed to quantify the total area of nodular calcification. Results: The highest cell proliferation and cell differentiation occurred in the OSTEO+PBMT group, followed by the PBMT, OSTEO and CONTROL groups respectively, at the observed times (P <0.05). Conclusion: PBMT enhanced the osteogenic proliferation and the differentiation of hUCMSCs during the periods tested, without causing damage to the cells and preserving their specific characteristics, a fact that may represent an innovative pretreatment in the application of stem cells. CI - Copyright (c) 2020 J Lasers Med Sci. FAU - Miranda, Jessica Meirinhos AU - Miranda JM AD - Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. AD - Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. FAU - de Arruda, Jose Alcides Almeida AU - de Arruda JAA AD - Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. FAU - Moreno, Lara Marques Magalhaes AU - Moreno LMM AD - Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. AD - Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. FAU - Gaiao, Wyndly Daniel Cardoso AU - Gaiao WDC AD - Department of Biophysics and Radiobiology, Universidade Federal de Pernambuco, Recife, PE, Brazil. FAU - do Nascimento, Sinval Vinicius Barbosa AU - do Nascimento SVB AD - Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. AD - Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. FAU - Silva, Eduardo Vinicius de Souza AU - Silva EVS AD - Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. AD - Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. FAU - da Silva, Marcia Bezerra AU - da Silva MB AD - Department of Biophysics and Radiobiology, Universidade Federal de Pernambuco, Recife, PE, Brazil. FAU - Rodrigues, Claudio Gabriel AU - Rodrigues CG AD - Department of Biophysics and Radiobiology, Universidade Federal de Pernambuco, Recife, PE, Brazil. FAU - de Albuquerque, Diana Santana AU - de Albuquerque DS AD - Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. FAU - Braz, Rodivan AU - Braz R AD - Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. FAU - Pinheiro, Antonio Luiz Barbosa AU - Pinheiro ALB AD - Center of Biophotonics, School of Dentistry, Universidade Federal da Bahia, Salvador, BA, Brazil. FAU - Gerbi, Marleny Elizabeth Marquez de Martinez AU - Gerbi MEMM AD - Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. AD - Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil. LA - eng PT - Journal Article DEP - 20201003 PL - Iran TA - J Lasers Med Sci JT - Journal of lasers in medical sciences JID - 101580415 PMC - PMC7736934 OTO - NOTNLM OT - Cell differentiation OT - Lasers OT - Photobiomodulation OT - Stem cells EDAT- 2021/01/12 06:00 MHDA- 2021/01/12 06:01 PMCR- 2020/09/01 CRDT- 2021/01/11 05:39 PHST- 2021/01/11 05:39 [entrez] PHST- 2021/01/12 06:00 [pubmed] PHST- 2021/01/12 06:01 [medline] PHST- 2020/09/01 00:00 [pmc-release] AID - 10.34172/jlms.2020.73 [doi] PST - ppublish SO - J Lasers Med Sci. 2020 Fall;11(4):469-474. doi: 10.34172/jlms.2020.73. Epub 2020 Oct 3.