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Curcumin attenuates glutamate neurotoxicity in the hippocampus by suppression of ER stress-associated TXNIP/NLRP3 inflammasome activation in a manner dependent on AMPK.
This study aims to investigate the action of curcumin in the hippocampus subjected to glutamate neurotoxicity. Glutamate stimulation induced reactive oxygen species (ROS), endoplasmic reticulum stress (ER stress) and TXNIP/NLRP3 inflammasome activation, leading to the damage in the hippocampus. Curcumin treatment in the hippocampus or SH-SY5Y cells inhibited IRE1α and PERK phosphorylation with suppression of intracellular ROS production. Curcumin increased AMPK activity and knockdown of AMPKα with specific siRNA abrogated its inhibitory effects on IRE1α and PERK phosphorylation, indicating that AMPK activity was essenti...
Source: Toxicology and Applied Pharmacology - March 16, 2015 Category: Toxicology Authors: Li Y, Li J, Li S, Li Y, Wang X, Liu B, Fu Q, Ma S Tags: Toxicol Appl Pharmacol Source Type: research

Curcumin analogue 1, 5-Bis (2-trifluoromethylphenyl)-1, 4-pentadien-3-one exhibit enhanced ability on Nrf2 activation and protection against acrolein-induced ARPE-19 cell toxicity.
Abstract Curcumin, a phytochemical agent in the spice turmeric, has received increasing attention for its anticancer, anti-inflammatory and antioxidant properties. However, application of curcumin have been limited due to its insolubility in water and poor bioavailability both clinically and experimentally. In addition, the protective effects and mechanisms of curcumin in eye diseases have been poorly studied. In the present study, we synthesized a curcumin analogue, 1, 5-Bis (2-trifluoromethylphenyl)-1, 4-pentadien-3-one (C3), which displayed improved protective effect against acrolein-induced toxicity in a human...
Source: Toxicology and Applied Pharmacology - August 13, 2013 Category: Toxicology Authors: Li Y, Zou X, Cao K, Xu J, Yue T, Dai F, Zhou B, Lu W, Feng Z, Liu J Tags: Toxicol Appl Pharmacol Source Type: research