Effect of atorvastatin on high glucose-stimulated expressions of MALAT1 and inflammatory factors in endothelial cells

Abstract

Objective To investigate the effect of atorvastatin on the expressions of long non-coding RNA(LncRNA)metastasis-associated lung adenocarcinoma transcript 1(MALAT1)and inflammation factors in human umbilical vein endothelial cells(HUVECs)stimulated by high glucose. Methods The expression of MALAT1 in HUVECs incubated with high glucose(30 mmol/L)for different time periods were detected by real-time PCR. Under high glucose condition, the expressions of MALAT1, interleukin-6(IL-6), and interleukin-8(IL-8)in HUVECs were detected after MALAT1 was silenced by siRNA or atorvastatin was added. Results (1)After HUVECs were incubated with high glucose for different time periods, the expressions of MALAT1 were increased to some extent(P<0.05), with the peak at 12h(P<0.01). The levels of IL-6 and IL-8 expression and secretion were increased after HUVECs were stimulated by high glucose for 12h(P<0.05). (2)The silence of MALAT1 markedly suppressed high glucose-stimulated expression and secretion of IL-6 and IL-8(P<0.05). (3)Atorvastatin significantly inhibited high glucose-stimulated expressions of MALAT1, IL-6, and IL-8(all P<0.05). Conclusions High glucose induces the secretion of inflammatory factors by stimulating MALAT1 expression in endothelial cells. Atorvastatin significantly inhibits high glucose-stimulated MALAT1 expression and decreases inflammatory reaction. (Chin J Endocrinol Metab, 2017, 33: 330-334) Key words: Atorvastatin; High glucose; Metastasis-associated lung adenocarcinoma transcript 1; Inflammatory reaction