title: Injury of cortical neurons is caused by the advanced glycation end products-mediated pathway.
abstract: Advanced glycation end products lead to cell apoptosis, and cause cell death by increasing endoplasmic reticulum stress. Advanced glycation end products alone may also directly cause damage to tissues and cells, but the precise mechanism remains unknown. This study used primary cultures of rat cerebral cortex neurons, and treated cells with different concentrations of glycation end products (50, 100, 200, 400 mg/L), and with an antibody for the receptor of advanced glycation end products before and after treatment with advanced glycation end products. The results showed that with increasing concentrations of glycation end products, free radical content increased in neurons, and the number of apoptotic cells increased in a dose-dependent manner. Before and after treatment of advanced glycation end products, the addition of the antibody against advanced glycation end-products markedly reduced hydroxyl free radicals, malondialdehyde levels, and inhibited cell apoptosis. This result indicated that the antibody for receptor of advanced glycation end-products in neurons from the rat cerebral cortex can reduce glycation end product-induced oxidative stress damage by suppressing glycation end product receptors. Overall, our study confirms that the advanced glycation end products-advanced glycation end products receptor pathway may be the main signaling pathway leading to neuronal damage.
authors.affiliation: China-Japan Union Hospital, Jilin University, Changchun 130033, Jilin Province, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Xing
authors.affiliation: China-Japan Union Hospital, Jilin University, Changchun 130033, Jilin Province, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.affiliation: College of Public Health, Jilin University, Changchun 130021, Jilin Province, China.
authors.forename: Xiangfu
authors.initials: X
authors.lastname: Song
authors.affiliation: China-Japan Union Hospital, Jilin University, Changchun 130033, Jilin Province, China.
authors.forename: Zhongwen
authors.initials: Z
authors.lastname: Lv
authors.affiliation: China-Japan Union Hospital, Jilin University, Changchun 130033, Jilin Province, China.
authors.forename: Lingling
authors.initials: L
authors.lastname: Hou
authors.affiliation: China-Japan Union Hospital, Jilin University, Changchun 130033, Jilin Province, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Li
keywords: advanced glycation end products; advanced glycation end products receptor; antibody; apoptosis; brain injury; cortical neurons; neural regeneration; neuroregeneration; oxidative stress; oxidative stress injury; pathway