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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

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

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

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

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

In vitro inhibitory properties of sesquiterpenes from Chloranthus serratus on cell motility via down-regulation of LIMK1 activation in human breast cancer
Conclusion collectively, 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 - June 14, 2018 Category: Drugs & Pharmacology 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

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

Hispidulin induces ER stress-mediated apoptosis in human hepatocellular carcinoma cells in vitro and in vivo by activating AMPK signaling pathway.
This study provides new insights into the anti-tumor activity of hispidulin in HCC. PMID: 30218072 [PubMed - as supplied by publisher]
Source: Acta Pharmacologica Sinica - September 14, 2018 Category: Drugs & Pharmacology Authors: Han M, Gao H, Xie J, Yuan YP, Yuan Q, Gao MQ, Liu KL, Chen XH, Han YT, Han ZW Tags: Acta Pharmacol Sin Source Type: research

Epigenetic Targeting DNMT1 of Pancreatic Ductal Adenocarcinoma using interstitial control release biodegrading polymer reduced tumor growth through Hedgehog pathway inhibition
Publication date: Available online 29 October 2018Source: Pharmacological ResearchAuthor(s): Mao-Hsuan Huang, Yi-Wen Chou, Ming-Hsun Li, Tina E. Shih, Shinn-Zong Lin, Hong-Meng Chuang, Tzyy-Wen Chiou, Hong-Lin Su, Horng-Jyh HarnAbstractAnnually, 48,000 people die from pancreatic ductal adenocarcinoma (PDAC), ranking it the fourth among cancer-related deaths in the United States. Currently, anti-cancer drugs are not effective against PDAC, and only extends survival by 3 months. Aberrant DNA methylation has been shown to play an important role during carcinogenesis in PDAC, with approximately 80% of tumor overexpressing the ...
Source: Pharmacological Research - October 30, 2018 Category: Drugs & Pharmacology Source Type: research

Shikonin Suppresses Lymphangiogenesis via NF- κB/HIF-1α Axis Inhibition.
In conclusion, shikonin inhibits lymphangiogenesis in vitro by interfering the NF-κB/HIF-1α pathway and involves in suppression of VEGF-C and VEGFR-3 mRNA expression. PMID: 30381665 [PubMed - in process]
Source: Biological and Pharmaceutical Bulletin - November 2, 2018 Category: Drugs & Pharmacology Authors: Prangsaengtong O, Jantaree P, Lirdprapamongkol K, Svasti J, Koizumi K Tags: Biol Pharm Bull Source Type: research

Magnesium lithospermate B protects the endothelium from inflammation-induced dysfunction through activation of Nrf2 pathway.
In this study, we investigated the protective effects of MLB against inflammation-induced endothelial dysfunction in vitro and in vivo, and the underlying mechanisms. Endothelial dysfunction was induced in human dermal microvascular endothelial cells (HMEC-1) in vitro by lipopolysaccharide (LPS, 1 μg/mL). We showed that pretreatment with MLB (10-100 μM) dose-dependently inhibited LPS-induced upregulation of inflammatory cytokines ICAM1, VCAM1, and TNFα, which contributed to reduced leukocytes adhesion and attenuation of endothelial hyperpermeability in HMEC-1 cells. SD rats were injected with LPS (10 mg/kg, ip) to...
Source: Acta Pharmacologica Sinica - January 7, 2019 Category: Drugs & Pharmacology Authors: Gao F, Li JM, Xi C, Li HH, Liu YL, Wang YP, Xuan LJ Tags: Acta Pharmacol Sin Source Type: research

Targeted regulation of Rell2 by microRNA-18a is implicated in the anti-metastatic effect of polyphyllin VI in breast cancer cells.
Abstract Polyphyllin VI (PP-VI) is one of the major saponins present in Paris polyphylla Sm., a medicinal plant primarily used for cancer treatment in China and India. However, its anti-metastatic activity remains largely unknown. The current study thus investigated the anti-metastatic activity of PP-VI in mouse mammary carcinoma 4T1 and human breast cancer MDA-MB-231 cells. The anti-metastatic effect of PP-VI was investigated at a sub-cytotoxic dose in migration and invasion assays in vitro. Experimental metastasis mouse model was used to examine the anti-metastatic effect of PP-VI in vivo. Additionally, target p...
Source: European Journal of Pharmacology - February 24, 2019 Category: Drugs & Pharmacology Authors: Wang P, Yang Q, Du X, Chen Y, Zhang T Tags: Eur J Pharmacol Source Type: research

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