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Smiglaside A ameliorates LPS-induced acute lung injury by modulating macrophage polarization via AMPK-PPAR γ pathway.
In this study, we evaluated the effects of the natural product smiglaside A, a phenylpropanoid glycoside isolated from the traditional Chinese medicinal herb Smilax riparia, on macrophage polarization and investigated the underlying mechanisms. We found that smiglaside A promoted M2 polarization and reduced M1 polarization in LPS-stimulated RAW264.7 cells and primary mouse peritoneal macrophages. Further mechanistic studies showed that the promoting effect of smiglaside A on M2 polarization was attenuated by pharmacological inhibition or gene silencing of AMP-activated protein kinase (AMPK) or peroxisome proliferator-activ...
Source: Biochemical Pharmacology - September 6, 2018 Category: Drugs & Pharmacology Authors: Wang Y, Xu Y, Zhang P, Ruan W, Zhang L, Yuan S, Pang T, Jia AQ Tags: Biochem Pharmacol Source Type: research

Anti-inflammatory activity of the decoction of Forsythia suspensa (Thunb.) Vahl is related to Nrf2 and A20
ConclusionWFF activated Nrf2 and expressed A20. Given that Nrf2 suppresses inflammation and A20 broadly disrupts inflammatory signaling cascades, our results suggest that the anti-inflammatory activity of WFF is attributable to Nrf2 and A20.Graphical abstract
Source: Journal of Ethnopharmacology - August 24, 2018 Category: Drugs & Pharmacology Source Type: research

Contribution of human UDP-glucuronosyltransferases to the antioxidant effects of propolis, artichoke and silymarin
Conclusion: In conclusion, this study provides a possible molecular mechanism for protective antioxidant effects associated with the herbal drugs propolis, artichoke and silymarin. The herbal drug-mediated transcriptional upregulation of human detoxifying UGT1A enzymes via activation of AhR and Nrf2 leads to reduced hydrogen peroxide and oxidative stress. Because of UGT1A activation, the intake of these drugs could affect the therapeutic efficacy of other drugs when these also undergo metabolism by glucuronidation.Graphical abstract
Source: Phytomedicine - August 10, 2018 Category: Drugs & Pharmacology Source Type: research

In vitro inhibitory properties of sesquiterpenes from Chloranthus serratus on cell motility via down-regulation of LIMK1 activation in human breast cancer
Conclusioncollectively, it was concluded that SERA exhibited significant inhibitory effects on breast cancer cells migration, and these effects of this sesquiterpene are due to its properties reducing the activation of LIM kinase 1.Graphical Abstract
Source: Phytomedicine - July 10, 2018 Category: Drugs & Pharmacology Source Type: research

Anti-inflammatory effect of the extracts from the branch of Taxillus yadoriki being parasitic in Neolitsea sericea in LPS-stimulated RAW264.7 cells
In this study, we evaluated the anti-inflammatory effect of extracts of branch from Taxillus yadoriki being parasitic in Neolitsea sericea (TY-NS-B) using in vitro model. TY-NS-B significantly inhibited LPS-induced secretion of NO and PGE2 in RAW264.7 cells. TY-NS-B was also observed to inhibit LPS-mediated iNOS COX-2 expression. In addition, TY-NS-B attenuated production of inflammatory cytokines such as TNF-α and IL-1β induced by LPS. TY-NS-B blocked LPS-mediated inhibitor of IκB-α, and inhibited p65 translocation to the nucleus and NF-κB activation. Furthermore, TY-NS-B reduced the phosphorylation of MAPKs such as ...
Source: Biomedicine and Pharmacotherapy - May 11, 2018 Category: Drugs & Pharmacology Source Type: research

Cellular mechanism for herbal medicine Junchoto to facilitate intestinal Cl − /water secretion that involves cAMP-dependent activation of CFTR
AbstractConstipation is a common symptom frequently compromising the quality of daily life. Several mechanistically different drugs have been used to mitigate constipation, including Japanese herbal (Kampo) medicines. However, the mechanisms of their actions are often not well understood. Here we aimed to investigate the molecular mechanisms underlying the effects of Junchoto (JCT), a Kampo medicine empirically prescribed for chronic constipation. Cl− channel activity was measured by the patch-clamp method in human cystic fibrosis transmembrane conductance regulator (CFTR)-expressing HEK293T cells and human intestinal Ca...
Source: Journal of Natural Medicines - March 22, 2018 Category: Drugs & Pharmacology Source Type: research

Shikonin upregulates the expression of drug-metabolizing enzymes and drug transporters in primary rat hepatocytes
Conclusions Shikonin effectively upregulates the transcription of CYP isozymes, phase II detoxification enzymes, and phase III membrane transporters and this function is at least partially through activation of AhR and Nrf2. Moreover, Nrf2 activation is dependent on mitogen-activated protein kinases. Graphical abstract
Source: Journal of Ethnopharmacology - February 4, 2018 Category: Drugs & Pharmacology Source Type: research

Bavachin induces apoptosis through mitochondrial regulated ER stress pathway in HepG2 cells.
Abstract As a traditional herbal medicine, the fruits of Psoralea corylifolia L. (FP) have been widely used for the treatment of various skin diseases for hundred years. Recently, the emerging FP-induced toxic effects, especially hepatotoxicity, in clinic are getting the public's attention. However, its exact toxic components and mechanisms underlying remain unclear. Bavachin, one of flavonoids in FP, has been documented as a hepatotoxic substance, and the present study aimed to determine the toxicity caused by bavachin and the possible toxic mechanisms involved using HepG2 cells. Our results showed that bavachin ...
Source: Biological and Pharmaceutical Bulletin - November 29, 2017 Category: Drugs & Pharmacology Authors: Yang Y, Tang X, Hao F, Ma Z, Wang Y, Wang L, Gao Y Tags: Biol Pharm Bull Source Type: research

Chelerythrine inhibits human hepatocellular carcinoma metastasis in vitro.
In this study, we investigated the effects of Chelerythrine on the migration and invasion of the human hepatocellular carcinoma cell line Hep3B. MTT, wounding healing, transwell migration and invasion assays and cytoskeleton staining demonstrated that CHE could inhibit the migration and invasion of Hep3B cells in a dose-dependent manner with change of cell structure. RNA interference studies made a knockdown of MMP (matrix metalloproteinase)-2/9 respectively in Hep3B cells. And the results of wounding healing and transwell invasion assay with the treatment of siRNA investigated that MMP-2/9 are positively associated with H...
Source: Biological and Pharmaceutical Bulletin - October 31, 2017 Category: Drugs & Pharmacology Authors: Zhu Y, Pan Y, Zhang G, Wu Y, Zhong W, Chu C, Qian Y, Zhu G Tags: Biol Pharm Bull Source Type: research

Methyleugenol protects against t-BHP-triggered oxidative injury by induction of Nrf2 dependent on AMPK/GSK3 β and ERK activation
Publication date: Available online 19 September 2017 Source:Journal of Pharmacological Sciences Author(s): Junfeng Zhou, Xiaoyuan Ma, Yan Cui, Yang Song, Lei Yao, Yuanyuan Liu, Shanshan Li Methyleugenol (Mlg), a natural ingredient of many herbs and used as a flavoring substance in dietary products, inhibits inflammation and oxidative stress. The aim of the study is to explore the antioxidative potential of Mlg against tert-butyl hydroperoxide (t-BHP)-triggered oxidative injury and the involvement of antioxidative mechanisms. Our findings indicated that Mlg exposure significantly alleviated t-BHP-stimulated cytotoxicity,...
Source: Journal of Pharmacological Sciences - September 20, 2017 Category: Drugs & Pharmacology Source Type: research

Taraxacum mongolicum extract induced endoplasmic reticulum stress associated-apoptosis in triple-negative breast cancer cells
Conclusion ER stress related cell apoptosis accounted for the anti-cancer effect of dandelion extract, and these findings support dandelion extract might be a potential therapeutic approach to treat TNBC. Graphical abstract
Source: Journal of Ethnopharmacology - April 29, 2017 Category: Drugs & Pharmacology Source Type: research

Berberine Hydrochloride Protects C2C12 Myoblast Cells Against Oxidative Stress ‐Induced Damage via Induction of Nrf‐2‐Mediated HO‐1 Expression
ABSTRACT The aim of the present study was to evaluate the effects of berberine hydrochloride (BBH), an isoquinoline alkaloid that can be isolated from a variety of herbs, on hydrogen peroxide (H2O2)‐induced oxidative stress in C2C12 myoblasts and to investigate the molecular mechanisms involved in this process, especially the expression of the Nrf2/HO‐1 pathway. BBH preconditioning attenuated H2O2‐induced growth inhibition and DNA damage as well as apoptosis in C2C12 cells via suppression of the accumulation of intracellular reactive oxygen species (ROS). Treatment with BBHride alone effectively upregulated th...
Source: Drug Development Research - July 31, 2016 Category: Drugs & Pharmacology Authors: Yung Hyun Choi Tags: Research Article Source Type: research

Geniposide Suppresses Hepatic Glucose Production via AMPK in HepG2 Cells.
This study was designed to determine, for the first time, how geniposide from G. jasminoides regulates hepatic glucose production, and the underlying mechanisms. During in vitro study, we found the inhibitory effect of geniposide on the hepatic glucose production is partly through AMP-activated protein kinase (AMPK) activation in HepG2 cells. Geniposide significantly inhibited hepatic glucose production in a dose-dependent manner. AMPK, acetyl coenzyme A synthetase (ACC) and forkhead box class O1 (FoxO1) phosphorylation were stimulated by different concentrations of geniposide. In addition, the enzyme activities of phosp...
Source: Biological and Pharmaceutical Bulletin - February 1, 2016 Category: Drugs & Pharmacology Authors: Guo L, Zheng X, Liu J, Yin Z Tags: Biol Pharm Bull Source Type: research

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