In VitroMolecular hydrogen regulates the expression of miR-9, miR-21 and miR-199 in LPS-activated retinal microglia cellsMHID-3711683PMID: 238265192013International Journal of OphthalmologyGD Liu, H Zhang, L Wang, Q Han, SF Zhou, P LiuAIM: To explore the potential mechanism of molecular hydrogen in the regulation of miRNA expression and signal-modulating activities. METHODS: Retinal microglia cells were activated by Lipopolysaccharides (LPS) and then treated with hydrogen -saturated medium or normal medium without hydrogen. qRT-PCR was used to detect the expression difference in miR-9, miR-21 and miR-199 between these two grou