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https://www.readbyqxmd.com/read/28534853/the-1-tosylpentan-3-one-protects-against-6-hydroxydopamine-induced-neurotoxicity
#1
Chien-Jen Kao, Wu-Fu Chen, Bo-Lin Guo, Chien-Wei Feng, Han-Chun Hung, Wen-Ya Yang, Chun-Sung Sung, Kuan-Hao Tsui, Hsin Chu, Nan-Fu Chen, Zhi-Hong Wen
Previous studies have demonstrated that the marine compound austrasulfone, isolated from the soft coral Cladiella australis, exerts a neuroprotective effect. The intermediate product in the synthesis of austrasulfone, dihydroaustrasulfone alcohol, attenuates several inflammatory responses. The present study uses in vitro and in vivo methods to investigate the neuroprotective effect of dihydroaustrasulfone alcohol-modified 1-tosylpentan-3-one (1T3O). Results from in vitro experiments show that 1T3O effectively inhibits 6-hydroxydopamine-induced (6-OHDA-induced) activation of both p38 mitogen-activated protein kinase (MAPK) and caspase-3 in SH-SY5Y cells; and enhances nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) expression via phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) signaling...
May 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28529531/the-protective-effect-of-lavender-essential-oil-and-its-main-component-linalool-against-the-cognitive-deficits-induced-by-d-galactose-and-aluminum-trichloride-in-mice
#2
Pan Xu, Kezhu Wang, Cong Lu, Liming Dong, Li Gao, Ming Yan, Silafu Aibai, Yanyan Yang, Xinmin Liu
Lavender essential oil (LO) is a traditional medicine used for the treatment of Alzheimer's disease (AD). It was extracted from Lavandula angustifolia Mill. This study was designed to investigate the effects of lavender essential oil (LO) and its active component, linalool (LI), against cognitive impairment induced by D-galactose (D-gal) and AlCl3 in mice and to explore the related mechanisms. Our results revealed that LO (100 mg/kg) or LI (100 mg/kg) significantly protected the cognitive impairments as assessed by the Morris water maze test and step-though test...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28529240/protective-effects-of-curcumin-on-manganese-induced-bv-2-microglial-cell-death
#3
Euteum Park, Hong Sung Chun
Curcumin, a bioactive component in tumeric, has been shown to exert antioxidant, anti-inflammatory, anticarcinogenic, hepatoprotective, and neuroprotective effects, but the effects of curcumin against manganese (Mn)-mediated neurotoxicity have not been studied. This study examined the protective effects of curcumin on Mn-induced cytotoxicity in BV-2 microglial cells. Curcumin (0.1-10 μM) dose-dependently prevented Mn (250 μM)-induced cell death. Mn-induced mitochondria-related apoptotic characteristics, such as caspase-3 and -9 activation, cytochrome c release, Bax increase, and Bcl-2 decrease, were significantly suppressed by curcumin...
May 20, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28524859/mesenchymal-stem-cells-sense-mitochondria-released-from-damaged-cells-as-danger-signals-to-activate-their-rescue-properties
#4
Meriem Mahrouf-Yorgov, Lionel Augeul, Claire Crola Da Silva, Maud Jourdan, Muriel Rigolet, Sylvie Manin, René Ferrera, Michel Ovize, Adeline Henry, Aurélie Guguin, Jean-Paul Meningaud, Jean-Luc Dubois-Randé, Roberto Motterlini, Roberta Foresti, Anne-Marie Rodriguez
Mesenchymal stem cells (MSCs) protect tissues against cell death induced by ischemia/reperfusion insults. This therapeutic effect seems to be controlled by physiological cues released by the local microenvironment following injury. Recent lines of evidence indicate that MSC can communicate with their microenvironment through bidirectional exchanges of mitochondria. In particular, in vitro and in vivo studies report that MSCs rescue injured cells through delivery of their own mitochondria. However, the role of mitochondria conveyed from somatic cells to MSC remains unknown...
May 19, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28524081/protective-effects-of-tormentic-acid-a-major-component-of-suspension-cultures-of-eriobotrya-japonica-cells-on-acetaminophen-induced-hepatotoxicity-in-mice
#5
Wen-Ping Jiang, Shyh-Shyun Huang, Yoshikazu Matsuda, Hiroshi Saito, Naoto Uramaru, Hui-Ya Ho, Jin-Bin Wu, Guan-Jhong Huang
An acetaminophen (APAP) overdose can cause hepatotoxicity and lead to fatal liver damage. The hepatoprotective effects of tormentic acid (TA) on acetaminophen (APAP)-induced liver damage were investigated in mice. TA was intraperitoneally (i.p.) administered for six days prior to APAP administration. Pretreatment with TA prevented the elevation of serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), total bilirubin (T-Bil), total cholesterol (TC), triacylglycerol (TG), and liver lipid peroxide levels in APAP-treated mice and markedly reduced APAP-induced histological alterations in liver tissues...
May 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28523535/self-protection-against-triptolide-induced-toxicity-in-human-hepatic-cells-via-nrf2-are-nqo1-pathway
#6
Ling-Ling Zhou, Cong Zhou, Xiao-Wen Liang, Zhe Feng, Zhang-Pu Liu, Hao-Lu Wang, Xue-Ping Zhou
OBJECTIVE: To find the signaling pathway of triptolide (TP)-induced liver injury and to reveal whether NF-E2-related factor 2 (Nrf2) plays an important role in cellular self-protection. METHODS: The L-02 and HepG2 cells were cultured and treated with various concentrations of TP. The cell viability was observed, and the cell medium was collected for detecting the aspartate aminotransferase (ALT), alanine aminotransferase (AST), lactate dehydrogenase (LDH), superoxide dismutase (SOD) and L-glutathione production (GSH) levels...
May 18, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28522909/in-vitro-and-in-vivo-antioxidative-and-hepatoprotective-activity-of-aqueous-extract-of-cortex-dictamni
#7
Lin Li, Yun-Feng Zhou, Yan-Lin Li, Li-Li Wang, Hiderori Arai, Yang Xu
AIM: To investigate the antioxidant and hepatoprotective effects of Cortex Dictamni aqueous extract (CDAE) in carbon tetrachloride (CCl4)-induced liver damage in rats. METHODS: The in vitro antioxidant effect of CDAE was investigated using α,α-diphenyl-β-picrylhydrazyl (DPPH), 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS), β-carotene bleaching, reducing power, and thiobarbituric acid reactive substance assays. A linoleic acid system, including ferric thiocyanate (FTC) and thiobarbituric acid (TBA) assays, was used to evaluate the inhibition of lipid peroxidation...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28521455/kdm3a-promotes-inhibitory-cytokines-secretion-by-participating-in-tlr4-regulation-of-foxp3-transcription-in-lung-adenocarcinoma-cells
#8
Yinan Li, Wei Yang, Bin Wu, Yaqing Liu, Dongbei Li, Yantong Guo, Haiying Fu, Yi Li
Toll-like receptor 4 (TLR4) is a pattern recognition receptors, a member of the Toll-like receptor family and it serves a role in innate and acquired immunity. It has previously been reported that TLR4 was overexpressed in a variety of tumor tissues and cells, including colorectal cancer, gastric cancer and ovarian cancer. In the tumor microenvironment, the TLR4 signaling pathway may be activated in order to upregulate forkhead box P3 (Foxp3) expression in regulatory T cells (Tregs), and thus enhance the immunosuppressive function of Tregs...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28518138/betulin-exhibits-anti-inflammatory-activity-in-lps-stimulated-macrophages-and-endotoxin-shocked-mice-through-an-ampk-akt-nrf2-dependent-mechanism
#9
Xinxin Ci, Junfeng Zhou, Hongming Lv, Qinlei Yu, Liping Peng, Shucheng Hua
Continued oxidative stress can lead to chronic inflammation, which in turn could mediate most chronic diseases including cancer. Nuclear factor erythroid 2-related factor (Nrf2), a critical transcriptional activator for antioxidative responses, has envolved to be an attractive drug target for the treatment or prevention of human diseases. In the present study, we investigated the effects and mechanisms of betulin on Nrf2 activation and its involvement in the lipopolysaccharide (LPS)-triggered inflammatory system...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28515173/heme-oxygenase-1-mitigates-ferroptosis-in-renal-proximal-tubule-cells
#10
Oreoluwa Adedoyin, Ravindra Boddu, Amie M Traylor, Jeremie M Lever, Subhashini Bolisetty, James George, Anupam Agarwal
Ferroptosis is an iron-dependent form of regulated, non-apoptotic cell death, which contributes to damage in models of acute kidney injury (AKI). Heme oxygenase-1 (HO-1) is a cytoprotective enzyme induced in response to cellular stress, and is protective against AKI due to its anti-apoptotic and anti-inflammatory properties. However, the role of HO-1 in regulating ferroptosis is unclear. The purpose of this study was to elucidate the role of HO-1 in regulating ferroptotic cell death in renal proximal tubule cells (PTCs)...
May 17, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28515158/the-anti-psoriatic-drug-monomethylfumarate-increases-nuclear-factor-erythroid-2-related-factor-2-nrf2-levels-and-induces-aquaporin-3-aqp3-mrna-and-protein-expression
#11
Inas Helwa, Vivek Choudhary, Xunsheng Chen, Ismail Kaddour-Djebbar, Wendy B Bollag
BACKGROUND: Oxidative stress contributes to inflammatory skin diseases including psoriasis. Monomethylfumarate (MMF) is an anti-psoriatic agent with a poorly understood mechanism of action. In other cell types MMF increases the expression of nuclear factor erythroid-derived 2-like 2 (Nrf2), a transcription factor that regulates cellular anti-oxidant responses, to reduce oxidative stress like that observed in inflammatory disorders such as multiple sclerosis. OBJECTIVE: We tested the hypothesis that MMF enhances Nrf2 activity in keratinocytes, thereby improving their capacity to counteract environmental stresses...
May 17, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28514495/protective-effects-of-dioscin-against-cisplatin-induced-nephrotoxicity-via-regulating-mir-34a-sirt1-signal-pathway
#12
Yimeng Zhang, Xufeng Tao, Lianhong Yin, Lina Xu, Youwei Xu, Yan Qi, Xu Han, Shasha Song, Yanyan Zhao, Yuan Lin, Kexin Liu, Jinyong Peng
BACKGROUND AND PURPOSE: Dioscin has various pharmacological actions in our previous works, however, little is known concerning the role of it on cisplatin (CDDP)-induced nephrotoxicity. The aim of the present study was to investigate the effects and possible mechanisms of dioscin against CDDP-induced nephrotoxicity. EXPERIMENTAL APPROACH: In the present study, the in vivo models of CDDP-induced nephrotoxicity in rats and mice were used, and the in vitro models on NRK-52E and HK-2 cells were developed...
May 17, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28513870/activation-of-the-nrf2-are-signaling-pathway-prevents-hyperphosphatemia-induced-vascular-calcification-by-inducing-autophagy-in-renal-vascular-smooth-muscle-cells
#13
Li Yao, Jian Wang, Bin-Yao Tian, Tian-Hua Xu, Zi-Tong Sheng
This study investigates the effect of nuclear factor erythroid 2-related factor 2-antioxidant response element (Nrf2-ARE) signaling pathway in vascular calcification (VC) via inducing Autophagy in renal vascular smooth muscle cells (VSMCs). VSMCs were assigned into six experimental groups: the normal control, high phosphorus, si-negative control (si-NC), Nrf2-siRNA, over-expressed Nrf2 and negative control (NC) groups. RT-PCR was applied to detect the mRNA expressions of the desired Nrf2-ARE signaling pathway-related genes (Nrf2, NQO-1, HO-1, γ-GCS)...
May 17, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28513573/nrf2-inhibits-periodontal-ligament-stem-cell-apoptosis-under-excessive-oxidative-stress
#14
Yanli Liu, Hongxu Yang, Yi Wen, Bingyi Li, Yinhua Zhao, Jing Xing, Min Zhang, Yongjin Chen
The present study aimed to analyze novel mechanisms underlying Nrf2-mediated anti-apoptosis in periodontal ligament stem cells (PDLSCs) in the periodontitis oxidative microenvironment. We created an oxidative stress model with H₂O₂-treated PDLSCs. We used real-time PCR, Western blotting, TUNEL staining, fluorogenic assay and transfer genetics to confirm the degree of oxidative stress and apoptosis as well as the function of nuclear factor-erythroid 2-related factor 2 (Nrf2). We demonstrated that with upregulated levels of reactive oxygen species (ROS) and malondialdehyde (MDA), the effect of oxidative stress was obvious under H₂O₂ treatment...
May 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28512172/in-vivo-hemin-conditioning-targets-the-vascular-and-immunological-compartments-and-restrains-prostate-tumor-development
#15
Felipe M Jaworski, Lucas Gentilini, Geraldine Gueron, Roberto P Meiss, Emiliano G Ortiz, Paula M Berguer, Asif Ahmed, Nora M Navone, Gabriel A Rabinovich, Daniel Compagno, Diego J Laderach, Elba S Vazquez
Purpose: Conditioning strategies constitute a relatively unexplored and exciting opportunity to shape tumor fate by targeting the tumor microenvironment. In this study we assessed how hemin, a pharmacological inducer of Heme Oxygenase-1 (HO-1), impacts upon prostate cancer (PCa) development in an in vivo conditioning model. <p>Experimental Design: The stroma of C57BL/6 mice was conditioned by subcutaneous administration of hemin prior to TRAMP-C1 tumor challenge. Complementary in vitro and in vivo assays were performed to evaluate hemin effect on both angiogenesis and the immune response...
May 16, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28508430/combined-delivery-of-a-lipopolysaccharide-binding-peptide-and-the-heme-oxygenase-1-gene-using-deoxycholic-acid-conjugated-polyethylenimine-for-the-treatment-of-acute-lung-injury
#16
Ji Yeon Kim, Chunxian Piao, Gyeungyun Kim, Seonyeong Lee, Min Sang Lee, Ji Hoon Jeong, Minhyung Lee
A ternary complex comprising plasmid DNA, lipopolysaccharide-binding peptide (LBP), and deoxycholic acid-conjugated polyethylenimine (PEI-DA) is prepared for combinational therapy of acute lung injury (ALI). The LBP is designed as an anti-inflammatory peptide based on the lipopolysaccharide (LPS)-binding domain of HMGB-1. In vitro cytokine assays show that LBP reduces levels of proinflammatory cytokines by inhibiting LPS. PEI-DA is synthesized as the gene carrier by conjugation of deoxycholic acid to low-molecular weight polyethylenimine (2 kDa, PEI2k)...
May 16, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28506553/inhibition-of-12-15-lo-ameliorates-cvb3-induced-myocarditis-by-activating-nrf2
#17
Feng Ai, Jiayong Zheng, Yanwei Zhang, Taibing Fan
Cardiac 12/15-lipoxygenase (12/15-LO) was reported to be markedly up-regulated and involved in the development of heart failure. Nuclear factor E2-related factor 2 (Nrf2) plays anti-inflammatory and anti-oxidation roles in response to oxidative stress. However, the role of 12/15-LO in viral myocarditis (VMC) and its underlying molecular mechanism have not yet been elucidated. Here, we demonstrated that 12/15-LO was up-regulated and Nrf2 was down-regulated in coxsackievirus B3 (CVB3)-infected mice and cardiac myocytes...
May 12, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28505498/ameliorative-effects-of-rutin-on-hepatic-encephalopathy-induced-by-thioacetamide-or-gamma-irradiation
#18
Somaya Z Mansour, Seham M El-Marakby, Fatma S M Moawed
Hepatic encephalopathy (HE) is a syndrome resulting from acute or chronic liver failure. This study was designed to evaluate the effect of rutin on thioacetamide (TAA) or γ-radiation-induced HE model. Animals were received with TAA (200mg/kg, i.p.) twice weekly for four weeks or exposed to 6Gy of γ-radiation to induce HE then groups orally treated with rutin (50mg/kg b.wt.) for four weeks. At the end of experiment, blood, liver and brain samples were collected to assess biochemical and biophysical markers as well histopathological investigations...
May 8, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28503683/cellular-evaluation-of-diselenonicotinamide-dsna-as-a-radioprotector-against-cell-death-and-dna-damage
#19
M Raghuraman, Prachi Verma, Amit Kunwar, Prasad P Phadnis, V K Jain, K Indira Priyadarsini
Diselenonicotinamide (DSNA), a synthetic organoselenium compound, was evaluated for its radioprotective effect in cellular models. A clonogenic assay in Chinese Hamster Ovary (CHO) cells and an apoptosis assay in murine splenic lymphocytes indicated that pre-treatment with DSNA at a concentration of 25 μM significantly protected them from radiation-induced cell death. Upon irradiation (1-12 Gy), dose-response studies were carried out under similar treatment conditions, and its dose modification factor (DMF) was estimated to be 1...
May 15, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28503033/15-deoxy-%C3%AE-12-14-prostaglandin-j2-exerts-antioxidant-effects-while-exacerbating-inflammation-in-mice-subjected-to-ureteral-obstruction
#20
Line Nilsson, Fredrik Palm, Rikke Nørregaard
Urinary obstruction is associated with inflammation and oxidative stress, leading to renal dysfunction. Previous studies have shown that 15-deoxy-Δ(12,14)-prostaglandin J2 (15d-PGJ2) has both antioxidant and anti-inflammatory effects. Using a unilateral ureteral obstruction (UUO) mouse model, we examined the effects of 15d-PGJ2 on oxidative stress and inflammation in the kidney. Mice were subjected to UUO for 3 days and treated with 15d-PGJ2. Protein and RNA expression were examined using immunoblotting and qPCR...
2017: Mediators of Inflammation
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