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https://www.readbyqxmd.com/read/29667734/celastrol-reverses-palmitic-acid-pa-caused-tlr4-md2-activation-dependent-insulin-resistance-via-disrupting-md2-related-cellular-binding-to-pa
#1
Xue Zhang, Ying Wang, Hui-Ya Ge, Yi-Jun Gu, Fan-Fan Cao, Chun-Xin Yang, Georges Uzan, Bin Peng, Deng-Hai Zhang
Elevated plasma statured fatty acids (FFAs) cause TLR4/MD2 activation-dependent inflammation and insulin tolerance, which account for the occurrence and development of obesity. It has been confirmed that statured palmitic acid (PA) (the most abundant FFA) could bind MD2 to cause cellular inflammation. The natural compound celastrol could improve obesity, which is suggested via inhibiting inflammation, yet the detailed mechanism for celastrol is still unclear. As celastrol is reported to directly target MD2, we thought disrupting the binding between FFAs and MD2 might be one of the ways for celastrol to inhibit FFAs-caused inflammation and insulin resistance...
April 18, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29666152/phenylmethimazole-abrogates-diet-induced-inflammation-glucose-intolerance-and-nafld
#2
Ashley Patton, Tyler Church, Caroline Wilson, Jean Thuma, Douglas J Goetz, Darlene E Berryman, Edward O List, Frank L Schwartz, Kelly D McCall
Nonalcoholic fatty liver disease (NAFLD) is the hepatic manifestation of both metabolic and inflammatory diseases and has become the leading chronic liver disease worldwide. High fat (HF) diets promote an increased uptake and storage of free fatty acids (FFAs) and triglycerides (TGs) in hepatocytes, which initiates steatosis and induces lipotoxicity, inflammation, and insulin resistance. Activation and signaling of Toll-like receptor 4 (TLR4) by FFAs induces inflammation evident in NAFLD and insulin resistance...
April 17, 2018: Journal of Endocrinology
https://www.readbyqxmd.com/read/29660095/effect-of-dietary-bacillus-coagulans-supplementation-on-growth-performance-and-immune-responses-of-broiler-chickens-challenged-by-salmonella-enteritidis
#3
Wenrui Zhen, Yujing Shao, Xiuyan Gong, Yuanyuan Wu, Yanqiang Geng, Zhong Wang, Yuming Guo
This study was conducted to evaluate the protective efficacy of dietary Bacillus coagulans (B. coagulans) supplementation in birds receiving Salmonella enteritidis (SE). Two hundred and forty 1-day-old Cobb broilers were randomly assigned to 2 × 2 factorial arrangements of treatments with 2 levels of dietary B. coagulans (0 or 400 mg/kg) and 2 levels of SE challenge (0 or 1 × 109 SE between d 9 to 11). Results showed that SE infection did not affect growth performance, but caused intestinal inflammation and barrier function impairment by reducing intestinal goblet cells and beneficial bacteria numbers, increasing cecal Salmonella colonization and liver Salmonella invasion, downregulating jejunal mucin-2 (at 7 and 17 d post-infection, DPI), TLR2 (at 7 and 17 DPI), TLR4 (at 17 DPI), TNFSF15 (at 7 and 17 DPI) gene mRNA levels, and upregulating jejunal IFN-γ mRNA levels (at 17 DPI) compared to uninfected birds...
April 11, 2018: Poultry Science
https://www.readbyqxmd.com/read/29622518/beta-sitosterol-and-its-derivatives-repress-lipopolysaccharide-d-galactosamine-induced-acute-hepatic-injury-by-inhibiting-the-oxidation-and-inflammation-in-mice
#4
Yongxia Yin, Xiaofeng Liu, Jinping Liu, Enbo Cai, Hongyan Zhu, Haijun Li, Lianxue Zhang, Pingya Li, Yan Zhao
Beta-sitosterol (Sit) widely exists in natural plants, is classed as phytosterol and known as the "key of life". Most pharmacological studies and clinical applications are limited because of the fact that Sit is difficult to be solved. Therefore, it is viable to enhance pharmacologic activities of Sit by using its derivatives which can be obtained through the modification of Sit. In this study, 4 kinds of new Sit derivatives were obtained by the esterification reaction. Further, the hepatoprotective effects of Sit and its derivatives were investigated against acute liver injury induced by lipopolysaccharide/d-galactosamine (LPS/GalN) in mice and its mechanism was illustrated by western blot analysis and real-time PCR...
March 28, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29611132/modulation-of-diabetes-related-liver-injury-by-the-hmgb1-tlr4-inflammatory-pathway
#5
Sofija Jovanović Stojanov, Vesna Martinović, Desanka Bogojević, Goran Poznanović, Anja Petrović, Svetlana Ivanović-Matić, Ilijana Grigorov
Chronic inflammation plays an essential role in the development of diabetic complications. Understanding the molecular mechanisms that support inflammation is a prerequisite for the design of novel anti-inflammatory therapies. These would take into consideration circulating levels of cytokines and damage-associated molecular patterns (DAMPs) that include the high mobility group box 1 (HMGB1) protein which, in part, promotes the inflammatory response through TLR4 signaling. The liver, as the source of circulating cytokines and acute-phase proteins, contributes to the control of systemic inflammation...
April 2, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29602239/inflammatory-factor-receptor-toll-like-receptor-4-controls-telomeres-through-heterochromatin-protein-1-isoforms-in-liver-cancer-stem-cell
#6
Qidi Zheng, Jie Xu, Zhuojia Lin, Yanan Lu, Xiaoru Xin, Xiaonan Li, Yuxin Yang, Qiuyu Meng, Chen Wang, Wujun Xiong, Dongdong Lu
Toll-like receptor 4 (TLR4) which acts as a receptor for lipopolysaccharide (LPS) has been reported to be involved in carcinogenesis. However, the regulatory mechanism of it has not been elucidated. Herein, we demonstrate that TLR4 promotes the malignant growth of liver cancer stem cells. Mechanistically, TLR4 promotes the expression of histone-lysine N-methyltransferase (SUV39 h2) and increases the formation of trimethyl histone H3 lysine 9-heterochromatin protein 1-telomere repeat binding factor 2 (H3K9me3-HP1-TRF2) complex at the telomeric locus under mediation by long non coding RNA urothelial cancer-associated 1 (CUDR)...
March 30, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29566963/analysis-of-the-relationship-between-interleukin-polymorphisms-within-mirna-binding-regions-and-alcoholic-liver-disease
#7
I Novo-Veleiro, C Cieza-Borrella, I Pastor, Rogelio González-Sarmiento, F-J Laso, M Marcos
INTRODUCTION: Alcohol consumption promotes inflammation through the Toll-like receptor 4 (TLR4)/nuclear factor (NF)-κB pathway, leading to organic damage. Some micro-RNA (miRNA) molecules modulate this inflammatory response by downregulating TLR4/NF-κB pathway mediators, like interleukins (ILs). Thus, polymorphisms within IL genes located near miRNA binding sites could modify the risk of ethanol-induced damage. The present study analyzed potential relationships between alcoholism or alcoholic liver disease (ALD) and IL12B 2124 G>T (rs1368439), IL16 5000 C>T (rs1131445), IL1R1 3114 C>T (rs3917328), and NFKB1 3400 A>G (rs4648143) polymorphisms...
March 19, 2018: Revista Clínica Española
https://www.readbyqxmd.com/read/29552860/-protective-effects-of-total-saponins-of-panax-japonicas-on-hepg2-cell-apoptosis-induced-with-palmitic-acid
#8
Hao Tu, Qin Zhou, Xun Zhang, Ting Wang, Cheng-Fu Yuan, Chang-Cheng Zhang, Ding Yuan, Zhao-Qi Liu
This study aimed to investigate the molecular mechanism and protective effect of total saponins of Panax japonicas (TSPJ) on HepG2 cells apoptosis induced by palmitic acid (PA).The HepG2 cells were cultured in vitro , and divided into five groups: the control group, the model group, the high-dose group (50 mg·L⁻¹), the middle-dose group (25 mg·L⁻¹) and the low-dose group (12.5 mg·L⁻¹).The cells of the five groups were cultured continuously for 24 hours. The cell viability was measured with MTT. HepG2 cells apoptosis was detected by Hoechest staining and Annexin V-FITC/PI staining...
January 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29550814/effects-of-kudingcha-nanoparticles-in-hyperlipidaemic-rats-induced-by-a-high-fat-diet
#9
Hongliang Zhang, Xiaoqin Zou, Qiuyan Huang, Xiaobin Zhong, Zhenguang Huang
BACKGROUND/AIMS: The herbal medicine Kudingcha has a bitter taste and low bioavailability for lipid reduction. To improve the bioavailability and ameliorate the compliance, we prepared Kudingcha nanoparticles and investigated their effect in hyperlipidaemic rats. In addition, the safety and lipid-lowering mechanism of the Kudingcha nanoparticles were examined. METHODS: Kudingcha nanoparticles were prepared by ionotropic gelation and spray-drying. Seventy rats were randomly assigned into eight groups: a normal fat diet group (NF), a high-fat group (HF), a spontaneous recovery group (SR), a Kudingcha group (KDC), a blank nanoparticle group (B-N), and a Kudingcha nanoparticle groups (low, medium and high doses)...
March 10, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29539590/fructose-liquid-and-solid-formulations-differently-affect-gut-integrity-microbiota-composition-and-related-liver-toxicity-a-comparative-in-vivo-study
#10
Raffaella Mastrocola, Ilario Ferrocino, Erica Liberto, Fausto Chiazza, Alessia Sofia Cento, Debora Collotta, Giulia Querio, Debora Nigro, Valeria Bitonto, Juan Carlos Cutrin, Kalliopi Rantsiou, Mariaconcetta Durante, Emanuela Masini, Manuela Aragno, Chiara Cordero, Luca Cocolin, Massimo Collino
Despite clinical findings suggesting that the form (liquid versus solid) of the sugars may significantly affect the development of metabolic diseases, no experimental data are available on the impact of their formulations on gut microbiota, integrity and hepatic outcomes. In the present sudy, C57Bl/6j mice were fed a standard diet plus water (SD), a standard diet plus 60% fructose syrup (L-Fr) or a 60% fructose solid diet plus water (S-Fr) for 12 weeks. Gut microbiota was characterized through 16S rRNA phylogenetic profiling and shotgun sequencing of microbial genes in ileum content and related volatilome profiling...
February 13, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29521104/association-of-toll-like-receptor-4-with-hepatitis-a-virus-infection-in-assam
#11
P Kashyap, M Deka, S Medhi, S Dutta, K Kashyap, N Kumari
Hepatitis A virus (HAV) which causes liver disease is recognized by Toll-like receptors (TLRs) through the viral nucleic acid, initiating the host defense response. The study aims to analyze the role of TLR4 rs11536889 polymorphism in the pathogenesis of hepatitis A cases from Assam. There was significant correlation between TLR4 SNP G/C (rs11536889) and between acute viral hepatitis (AVH) A cases and controls. The correlation of the 3 different genotypes GG, GC and CC of TLR4 rs11536889 with the TLR4 mRNA expression level in all the HAV cases groups have been found to be statistically significant (p <0...
2018: Acta Virologica
https://www.readbyqxmd.com/read/29511434/augmenter-of-liver-regeneration-alr-regulates-acute-pancreatitis-via-inhibiting-hmgb1-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway
#12
Long-Fei Pan, Lei Yu, Li-Ming Wang, Jun-Tao He, Jiang-Li Sun, Xiao-Bo Wang, Hai Wang, Zheng-Hai Bai, Hui Feng, Hong-Hong Pei
This research aimed to explore the effect of augmenter of liver regeneration (ALR) in acute pancreatitis (AP) of mice and the underlying mechanism. Caerulein were given to mice to get AP models. AP mice were given saline, ALR plasmids or negative control plasmids. Then, pancreas tissues were fixed and stained for histological examination. The levels of serum amylase, serum lipase, MPO, HMGB1, TNF-α, IL-1β as well as MCP-1 were detected by ELISA assay. The mRNA levels of TLR4, p65, IκBα, iNOS, COX-2 and GAPDH were examined by RT-qPCR...
2018: American Journal of Translational Research
https://www.readbyqxmd.com/read/29507582/differential-effects-of-three-techniques-for-hepatic-vascular-exclusion-during-resection-for-liver-cirrhosis-on-hepatic-ischemia-reperfusion-injury-in-rats
#13
Changjun Jia, Chaoliu Dai, Hailiang Wang, Yi Wan, Yunyu Qiao, Feng Xu, Songlin Peng, Yang Zhao, Chuang Zhao, Liang Zhao
Background/Aims: Hepatic ischemia-reperfusion (I/R) injury is a serious concern during hepatic vascular occlusion. The objectives of this study were to assess effects of three techniques for hepatic vascular occlusion on I/R injury and to explore the underlying mechanisms. Methods: Liver cirrhotic rats had undertaken Pringle maneuver (PR), hemihepatic vascular occlusion (HH), or hepatic blood inflow occlusion without hemihepatic artery control (WH). Levels of tumor necrosis factor alpha (TNF- α ), nuclear factor kappa B (NF- κ B), toll-like receptor 4 (TLR4), TIR-domain-containing adapter-inducing interferon- β (TRIF), and hemeoxygenase 1 (HMOX1) were assayed...
2018: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/29505573/clonorchis-sinensis-adult-derived-proteins-elicit-th2-immune-responses-by-regulating-dendritic-cells-via-mannose-receptor
#14
Lu Zhao, Mengchen Shi, Lina Zhou, Hengchang Sun, Xiaona Zhang, Lei He, Zeli Tang, Caiqin Wang, Yinjuan Wu, Tingjin Chen, Mei Shang, Xinyi Zhou, Zhipeng Lin, Xuerong Li, Xinbing Yu, Yan Huang
BACKGROUND: Clonorchis sinensis (C. sinensis) is the most widespread human liver fluke in East Asia including China and Korea. Clonorchiasis as a neglected tropical zoonosis, leads to serious economic and public health burden in China. There are considerable evidences for an etiological relation between chronic clonorchiasis and liver fibrosis in human beings. Liver fibrosis is a highly conserved and over-protected response to hepatic tissue injury. Immune cells including CD4+ T cell as well as dendritic cell (DC), and pro-fibrogenic cytokines like interleukin 4 (IL-4), IL-13 have been identified as vital manipulators in liver fibrogenesis...
March 5, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29475512/activation-of-liver-x-receptors-inhibit-lps-induced-inflammatory-response-in-primary-bovine-mammary-epithelial-cells
#15
Jingjing Wang, Chong Xiao, Zhengkai Wei, Yanan Wang, Xu Zhang, Yunhe Fu
Liver X Receptors (LXRs) belong to the nuclear receptor superfamily, have been reported that activation of LXRs with synthetic ligands has anti-inflammatory effects in various inflammatory diseases. This study aims at investigating the effects of T0901317 (T0), a synthetic LXRs ligand, on lipopolysaccharide (LPS)-stimulated primary bovine mammary epithelial cells (bMECs). BMECs were stimulated by LPS in the presence or absence of T0. The results showed that treatment with T0 significantly inhibited LPS-induced tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) expression...
March 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29463000/awrk6-a-synthetic-cationic-peptide-derived-from-antimicrobial-peptide-dybowskin-2cdya-inhibits-lipopolysaccharide-induced-inflammatory-response
#16
Qiuyu Wang, Lili Jin, Huan Wang, Sijia Tai, Hongsheng Liu, Dianbao Zhang
Lipopolysaccharides (LPS) are major outer membrane components of Gram-negative bacteria and produce strong inflammatory responses in animals. Most antibiotics have shown little clinical anti-endotoxin activity while some antimicrobial peptides have proved to be effective in blocking LPS. Here, the anti-LPS activity of the synthetic peptide AWRK6, which is derived from antimicrobial peptide dybowskin-2CDYa, has been investigated in vitro and in vivo. The positively charged α-helical AWRK6 was found to be effective in blocking the binding of LBP (LPS binding protein) with LPS in vitro using ELISA...
February 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29454967/sarm1-deletion-restrains-nafld-induced-by-high-fat-diet-hfd-through-reducing-inflammation-oxidative-stress-and-lipid-accumulation
#17
Zhen-Guo Pan, Xu-Sheng An
SARM1 (Sterile alpha and armadillo motif-containing protein 1) is the recently identified TIR domain-containing cytosolic protein, which is involved in toll-like receptors (TLRs) signaling transduction. In the present study, the role of SARM1 in high fat diet (HFD)-induced non-alcoholic fatty liver disease (NAFLD) progression was explored. We found that SARM1 was expressed highly in fatty liver. And SARM1-knockout (KO) reduced steatohepatitis and metabolic disorders induced by HFD. SARM1-deletion decreased aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels in HFD-fed mice...
February 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29452207/glycogen-synthase-kinase-3%C3%AE-promotes-liver-innate-immune-activation-by-restraining-amp-activated-protein-kinase-activation
#18
Haoming Zhou, Han Wang, Ming Ni, Shi Yue, Yongxiang Xia, Ronald W Busuttil, Jerzy W Kupiec-Weglinski, Ling Lu, Xuehao Wang, Yuan Zhai
BACKGROUND & AIMS: Glycogen synthase kinase 3β (Gsk3β) is a ubiquitously expressed kinase with distinctive functions in different types of cells. Although its roles in regulating innate immune activation and ischemia and reperfusion injuries (IRI) have been well documented, underlying mechanisms remain ambiguous, due in part to the lack of cell-specific tools in vivo. METHODS: We created a myeloid-specific Gsk3β KO strain to study its function in macrophages in a murine liver partial warm ischemia model...
February 13, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29426925/ageing-potentiates-diet-induced-glucose-intolerance-%C3%AE-cell-failure-and-tissue-inflammation-through-tlr4
#19
Wei He, Ting Yuan, Dolma Choezom, Hannah Hunkler, Karthika Annamalai, Blaz Lupse, Kathrin Maedler
Ageing and obesity are two major risk factors for the development of type 2 diabetes (T2D). A chronic, low-grade, sterile inflammation contributes to insulin resistance and β-cell failure. Toll-like receptor-4 (TLR4) is a major pro-inflammatory pathway; its ligands as well as downstream signals are increased systemically in patients with T2D and at-risk individuals. In the present study we investigated the combined effects of high fat/high sucrose diet (HFD) feeding, ageing and TLR4-deficiency on tissue inflammation, insulin resistance and β-cell failure...
February 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29416856/effects-of-bacillus-coagulans-supplementation-on-the-growth-performance-and-gut-health-of-broiler-chickens-with-clostridium-perfringens-induced-necrotic-enteritis
#20
Yuanyuan Wu, Yujing Shao, Bochen Song, Wenrui Zhen, Zhong Wang, Yuming Guo, Muhammad Suhaib Shahid, Wei Nie
Background: The poultry industry is in need of effective antibiotic alternatives to control outbreaks of necrotic enteritis (NE) due to Clostridium perfringens. Methods: This study was conducted to investigate the effects of feeding Bacillus coagulans on the growth performance and gut health of broiler chickens with C. perfringens-induced NE. Two hundred and forty 1-day-old broiler chicks were randomly assigned to a 2 × 2 factorial arrangement with two dietary B...
2018: Journal of Animal Science and Biotechnology
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