Loganin (cas 18524-94-2) protects against hydrogen peroxide-induced apoptosis by inhibiting phosphorylation of JNK, p38, and ERK 1/2 MAPKs in SH-SY5Y cells
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Add time:09/27/2019 Source:sciencedirect.com
We investigated the mechanisms underlying the protective effects of Loganin (cas 18524-94-2) against hydrogen peroxide (H2O2)-induced neuronal toxicity in SH-SY5Y cells. The neuroprotective effect of loganin was investigated by treating SH-SY5Y cells with H2O2 and then measuring the reduction in H2O2-induced apoptosis using 3-(4,5-dimethyl thiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and lactate dehydrogenase (LDH) release assays. Following H2O2 exposure, Hoechst 33258 staining indicated nuclear condensation in a large proportion of SH-SY5Y cells, along with an increase in reactive oxygen species (ROS) production and an intracellular decrease in mitochondria membrane potential (MMP). Loganin was effective in attenuating all the above-stated phenotypes induced by H2O2. Pretreatment with loganin significantly increased cell viability, reduced H2O2-induced LDH release and ROS production, and effectively increased intracellular MMP. Pretreatment with loganin also significantly decreased the nuclear condensation induced by H2O2. Western blot data revealed that loganin inhibited the H2O2-induced up-regulation of cleaved poly (ADP-ribose) polymerase (PARP) and cleaved caspase-3, increased the H2O2-induced decrease in the Bcl-2/Bax ratio, and attenuated the H2O2-induced release of cytochrome c from mitochondria to the cytosol. Furthermore, pretreatment with loganin significantly attenuated the H2O2-induced phosphorylation of c-Jun N-terminal kinase (JNK), p38 mitogen-activated protein kinase (MAPK), and extracellular signal-regulated kinase 1/2 (ERK 1/2). These results suggest that the protective effects of loganin against H2O2-induced apoptosis may be due to a decrease in the Bcl-2/Bax ratio expression due to the inhibition of the phosphorylation of JNK, p38, and ERK 1/2 MAPKs. Loganin's neuroprotective properties indicate that this compound may be a potential therapeutic agent for the treatment of neurodegenerative diseases.
► Loganin rescued neuronal cells against H2O2-induced apoptosis. ► Neuroprotective effects of loganin may be related to its anti-oxidative effects. ► Loganin can potentially be used in the design and development of drugs to prevent oxidative stress-mediated neurodegenerative diseases.
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