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Tetrahydroxystilbene glycoside improves endothelial dysfunction and hypertension in obese rats: the role of omentin-1
CONCLUSIONS: Down-regulation of omentin-1 induces endothelial dysfunction and hypertension in obesity. TSG treatment (at least partially) increases omentin-1 via promoting binding of PPAR-γ and Itln-1 promoter in adipose tissues, subsequently exerts protective effects on endothelial function via activating Akt/eNOS/NO signaling and attenuating oxidative/nitrative stress. These results suggest that TSG could be developed as a promising anti-hypertension agent that protects against endothelial dysfunction and obesity-associated cardiovascular diseases.PMID:33647262 | DOI:10.1016/j.bcp.2021.114489
Source: Biochemical Pharmacology - March 1, 2021 Category: Drugs & Pharmacology Authors: Qianqian Dong Wenjuan Xing Kaifeng Li Xuanxuan Zhou Siwang Wang Haifeng Zhang Source Type: research

Tetrahydroxy stilbene glycoside alleviated inflammatory damage by mitophagy via AMPK related PINK1/Parkin signaling pathway.
In conclusion, these phenomena suggested that TSG prevented LPS/ATP and Aβ-induced inflammation via AMPK/PINK1/Parkin-dependent enhancement of mitophagy. We found the neuroprotective effect of TSG, suggesting it may be beneficial for AD prevention and treatment by suppressing the activation of inflammation. PMID: 32353422 [PubMed - as supplied by publisher]
Source: Biochemical Pharmacology - April 26, 2020 Category: Drugs & Pharmacology Authors: Gao Y, Li J, Li J, Hu C, Zhang L, Yan J, Li L, Zhang L Tags: Biochem Pharmacol Source Type: research

Novel compound from Polygonum multiflorum inhibits inflammatory response in LPS-stimulated microglia by upregulating AMPK/ Nrf2 pathways
Publication date: Available online 19 August 2016 Source:Neurochemistry International Author(s): Sun Young Park, Mei Ling Jin, Seon Yeong Chae, Min Jung Ko, Yung Hyun Choi, Geuntae Park, Young-Whan Choi Polygonum multiflorum extracts are known to improve memory and learning ability, and have neuroprotective and anti-aging activity. However, its function and the underlying mechanisms in neuroinflammation-mediated neurodegenerative disease remain poorly understood. In the present study, we investigated the anti-neuroinflammatory effects of several compounds from P. multiflorum, and found a novel compound, CRPE55IB. The CRPE...
Source: Neurochemistry International - August 19, 2016 Category: Neuroscience Source Type: research

Anti-neuroinflammatory Effect of Emodin in LPS-Stimulated Microglia: Involvement of AMPK/Nrf2 Activation.
This study examined whether emodin can activate AMPK/Nrf2 signaling and induce the expression of genes targeted by this pathway. In addition, the anti-neuroinflammatory properties of emodin in lipopolysaccharide (LPS)-stimulated microglia were examined. In microglia, the emodin treatment increased the levels of LKB1, CaMKII, and AMPK phosphorylation. Emodin increased the translocation and transactivity of Nrf2 and enhanced the levels of HO-1 and NQO1. In addition, the emodin-mediated expression of HO-1 and NQO1 was attenuated completely by an AMPK inhibitor (compound C). Moreover, emodin decreased dramatically the LPS-indu...
Source: Neurochemical Research - August 18, 2016 Category: Neuroscience Authors: Park SY, Jin ML, Ko MJ, Park G, Choi YW Tags: Neurochem Res Source Type: research