Further increased osteogenic differentiation and mineralization of co-cultured PDLSCs under hypoxia were regulated by MEK/ERK and p38 MAPK pathways. And the ECs-mediated paracrine of PGE(2) and VEGF may facilitate the unidirectional PDLSC-EC communication and promote PDLSCs osteogenesis.
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Wu et al. (2012) studied this question.
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