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Tropical Journal of Pharmaceutical Research
Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, Nigeria
ISSN: 1596-5996
EISSN: 1596-9827
Vol. 15, No. 2, 2016, pp. 313-317
Bioline Code: pr16041
Full paper language: English
Document type: Research Article
Document available free of charge

Tropical Journal of Pharmaceutical Research, Vol. 15, No. 2, 2016, pp. 313-317

 en Epigallocatechin-3-gallate Promotes Osteoblastic Activity in Human Osteoblast-like Cells
Peng, Yuewen; Yu, Bin & Liu, Fang

Abstract

Purpose: To investigate the effect of epigallocatechin-3-gallate (EGCG) on bone metabolism and osteoblastic activity.
Methods: MG-63 human osteoblast-like cells were treated with varied concentrations of EGCG. Alkaline phosphatase (ALP) activity and matrix mineralization assays were carried out on the treated and untreated MG-63 human osteoblast-like cells. Beta-catenin mRNA level was determined by quantitative real-time polymerase chain reaction (q-PCR).
Results: The results showed that EGCG treatment significantly increased ALP and mineralization activities at concentrations of 15 and 30 μM, in a dose-dependent manner. Furthermore, EGCG treatment significantly increased beta-catenin mRNA expression by 70.7 ± 11.0 and 126.7 ± 35.1 %, respectively, at EGCG concentration of 15 and 30 μM. In addition, the stimulating effect of EGCG treatment on ALP activity was abolished by co-treatment with ICI 182,780, an antagonist of estrogen receptor (ER). Again, the increase in beta-catenin MRNA, when treated with EGCG, was inhibited by co-treatment with ICI 182,780.
Conclusion: EGCG promotes osteoblastic activity in human osteoblast-like cells, by Wnt signaling through estrogen receptor (ER) pathway.

Keywords
Epigallocatechin-3-gallate; Osteoporosis; Osteoclast; Proliferation; Estrogen receptor

 
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