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Low Density Lipoprotein Receptor-related Protein 2 Expression and Function in Cultured Astrocytes and Microglia
Neurochem Res. 2023 Sep 13. doi: 10.1007/s11064-023-04022-7. Online ahead of print.ABSTRACTActivation of glial cells, astrocytes and microglia, has been observed in neurodegenerative diseases including Alzheimer's disease (AD). Amyloid β (Aβ), which is aggregated and the aggregation is detected as characteristic pathology in AD brain, is known to be produced by neurons and to activate glial cells. Clearance of Aβ from the brain via active transport system is important to prevent the accumulation and aggregation. Low density lipoprotein receptor-related protein 2 (LRP2/megalin) is an Aβ transporter. However, expression ...
Source: Neurochemical Research - September 13, 2023 Category: Neuroscience Authors: Katsura Takano-Kawabe Kazuyuki Matoba Yoichi Nakamura Mitsuaki Moriyama Source Type: research

The Neuroprotective Effect of GM-1 Ganglioside on the Amyloid-Beta-Induced Oxidative Stress in PC-12 Cells Mediated by Nrf-2/ARE Signaling Pathway
We reported herein that GM-1 could activate Nrf-2 in the PC-12 cells co-treated with Aβ25-35, following with the activated expression of antioxidant response elements (ARE)-mediated antioxidant and detoxifying genes. Consistently, knock-down of Nrf-2 via siRNA abolished the beneficial decrease of Aβ-induced oxidative stress by GM-1 treatment, indicating that GM-1-improved oxidative stress was regulated by the Nrf-2 signaling pathway. Collectively, GM-1 could alleviate Aβ25-35-induced oxidative damage mediated through the Nrf-2/ARE signaling pathway, which might be a potential agent for AD treatment.PMID:35635605 | DOI:1...
Source: Neurochemical Research - May 31, 2022 Category: Neuroscience Authors: Xiaonan Wang Bei Li Xiaohong Yu Ye Zhou Yue Gao Source Type: research

Neuroprotective Effects of Rhynchophylline Against A β < sub > 1-42 < /sub > -Induced Oxidative Stress, Neurodegeneration, and Memory Impairment Via Nrf2-ARE Activation
Neurochem Res. 2021 Jun 25. doi: 10.1007/s11064-021-03343-9. Online ahead of print.ABSTRACTExtensive studies have shown that oxidative stress is a crucial pathogenic factor in Alzheimer's disease (AD). Nuclear factor E2-related factor 2 (Nrf2) is a master cytoprotective regulator against oxidative stress, and thus represents an attractive therapeutic target in AD. The goal of our study is to investigate the contribution of Nrf2 in Rhynchophylline (Rhy)-induced neuroprotection in AD. The data showed that intraperitoneal administration of Rhy (10 or 20 mg/kg) could ameliorate Aβ1-42-induced cognitive impairment, evidenced b...
Source: Neurochemical Research - June 25, 2021 Category: Neuroscience Authors: Pan Jiang Lei Chen Jian Xu Wenyuan Liu Feng Feng Wei Qu Source Type: research

Resveratrol Attenuates the Cytotoxicity Induced by Amyloid- β1-42 in PC12 Cells by Upregulating Heme Oxygenase-1 via the PI3K/Akt/Nrf2 Pathway.
Resveratrol Attenuates the Cytotoxicity Induced by Amyloid-β1-42 in PC12 Cells by Upregulating Heme Oxygenase-1 via the PI3K/Akt/Nrf2 Pathway. Neurochem Res. 2017 Oct 31;: Authors: Hui Y, Chengyong T, Cheng L, Haixia H, Yuanda Z, Weihua Y Abstract Oxidative stress and cytotoxic damage induced by amyloid beta (Aβ) have been considered pivotal in the pathogenesis of Alzheimer's disease (AD) and may represent a target for treatment. The phosphatidylinositol 3-kinase (PI3K)/Akt pathway elicits a survival signal to protect against multiple injuries, and the transcription factor nuclear factor erythroid 2...
Source: Neurochemical Research - October 31, 2017 Category: Neuroscience Authors: Hui Y, Chengyong T, Cheng L, Haixia H, Yuanda Z, Weihua Y Tags: Neurochem Res Source Type: research

Oxabicycloheptene Sulfonate Protects Against β-Amyloid-induced Toxicity by Activation of PI3K/Akt and ERK Signaling Pathways Via GPER1 in C6 Cells.
Abstract Oxabicycloheptene sulfonate (OBHS) is a novel bicyclic core selective estrogen receptor modulator (SERM) with estrogen receptor (ER) antagonistic-activity and anti-inflammatory activity. However, little is known about protective action of OBHS on neurodegenerative disorders. In the present study, OBHS demonstrated a remarkably protective effect against amyloid beta (Aβ) induced cytotoxicity via G-protein-coupled estrogen receptor 1 (GPER1) in rat astroglial cell line (C6). The C6 cell death induced by Aβ was decreased by OBHS (1 μM) treatment for 45 min. This rapid protective action was blocked by GP...
Source: Neurochemical Research - April 4, 2017 Category: Neuroscience Authors: Deng LJ, Cheng C, Wu J, Wang CH, Zhou HB, Huang J Tags: Neurochem Res Source Type: research

Complex Effect of RNA Spliceosome Inhibition on Amyloid Precursor Protein Expression.
Abstract Alzheimer's disease (AD) is a worldwide health problem that requires more effective cures and better understanding. Evidence of both pathology and genetics strongly points to the amyloid precursor protein (APP) in the pathogenesis of this devastating disease. Recent studies demonstrated U1 spliceosomal proteopathy and RNA splicing deficiency in AD brains; and inhibition of certain U1 components (U1-70K and snRNA) increased APP protein level as well as its amyloidogenic cleavage products. This intriguing discovery provides a potential mechanism for amyloid formation in AD brains. To determine whether this...
Source: Neurochemical Research - June 30, 2016 Category: Neuroscience Authors: Zhang N, He L, Feng H, Kong Y, Wang J, Zhang J Tags: Neurochem Res Source Type: research