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https://www.readbyqxmd.com/read/28213269/protective-effects-of-morin-on-lipopolysaccharide-d-galactosamine-induced-acute-liver-injury-by-inhibiting-tlr4-nf-%C3%AE%C2%BAb-and-activating-nrf2-ho-1-signaling-pathways
#1
Ye Tian, Zheng Li, Bingyu Shen, Qiaoling Zhang, Haihua Feng
Morin, a bioactive flavonoid extracted from the bark of Moraceae plants and many medicinal herbs, has anti-inflammatory and antioxidative effects. In this research, we explored the protective effects of morin against lipopolysaccharide (LPS) and d-galactosamine (D-GalN) induced acute liver injury in mice. Mice were given an intraperitoneal injection of morin before LPS and D-GalN treatment and the HepG2 cells were only given morin to investigate its effects. The results showed that morin markedly inhibited the production of serum alanine transaminase (ALT), aspartate aminotransferase (AST), interleukin-6 (IL-6), tumor necrosis factor (TNF-α) and hepatic TNF-α, IL-6, and myeloperoxidase (MPO) induced by LPS/D-GalN...
February 14, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28197212/herbal-compound-jiedu-huayu-reduces-liver-injury-in-rats-via-regulation-of-il-2-tlr4-and-pcna-expression-levels
#2
Minggang Wang, Qinglan Shi, Rongzhen Zhang, Hua Qiu, Dewen Mao, Fuli Long
Aim of the Study. To investigate the preventative effects of Jiedu Huayu (JDHY) on D-galactosamine (D-GalN) and lipopolysaccharide-induced acute liver failure (ALF) and to evaluate the possible mechanisms of action. Materials and Methods. ALF was induced in Wistar rats by administrating D-GalN (900 mg/kg) and lipopolysaccharide (10 μg/kg). After treatment with JDHY granules, the levels of blood alanine aminotransferase, aspartate aminotransferase, total bilirubin, and prothrombin time were determined. Proliferating cell nuclear antigen was detected by immunohistochemistry staining...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28196704/toll-like-receptor-4-antagonist-tak-242-inhibits-autoinflammatory-symptoms-in-ditra
#3
Akitaka Shibata, Kazumitsu Sugiura, Yasuhide Furuta, Yoshiko Mukumoto, Osamu Kaminuma, Masashi Akiyama
BACKGROUND: IL36RN encodes the IL-36 receptor antagonist (IL-36Ra), and loss-of-function mutations in IL36RN define a recessively inherited autoinflammatory disease named "deficiency of IL-36Ra" (DITRA). DITRA causes systemic autoinflammatory diseases, including generalized pustular psoriasis (GPP), an occasionally life-threatening disease that is characterized by widespread sterile pustules on the skin, fever and other systemic symptoms. GPP can present at any age, and provocative factors include various infections, medicines and pregnancy...
February 11, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28165624/myeloid-myd88-contributes-to-ethanol-induced-liver-injury-in-mice-linking-hepatocellular-death-to-inflammation
#4
Hao Zhou, Minja Yu, Sanjoy Roychowdhury, Carlos Sanz-Garcia, Katherine A Pollard, Megan R McMullen, Xiuli Liu, Xiaoxia Li, Laura E Nagy
BACKGROUND: Toll-like receptor 4 (TLR4) is critical for ethanol-induced liver injury. TLR4 signaling is mediated by two proximal adaptor molecules: myeloid differentiation primary-response protein (MyD88) and TLR-domain-containing adapter-inducing interferon-β (TRIF). Studies utilizing global knock-outs of MyD88 and TRIF identified a predominant role for TRIF signaling in the progression of ethanol-induced liver injury. In contrast, IL1 receptor, which signals solely via the MyD88 pathway, is also known to mediate ethanol-induced liver injury...
February 6, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28145460/caffeic-acid-cyclohexylamide-rescues-lethal-inflammation-in-septic-mice-through-inhibition-of-i%C3%AE%C2%BAb-kinase-in-innate-immune-process
#5
Jun Hyeon Choi, Sun Hong Park, Jae-Kyung Jung, Won-Jea Cho, Byeongwoo Ahn, Cheong-Yong Yun, Yong Pyo Choi, Jong Hun Yeo, Heesoon Lee, Jin Tae Hong, Sang-Bae Han, Youngsoo Kim
Targeting myeloid differentiation protein 2 (MD-2) or Toll-like receptor 4 (TLR4) with small molecule inhibitor rescues the systemic inflammatory response syndrome (SIRS) in sepsis due to infection with Gram-negative bacteria but not other microbes. Herein, we provided IκB kinase β (IKKβ) in innate immune process as a molecular target of caffeic acid cyclohexylamide (CGA-JK3) in the treatment of polymicrobial TLR agonists-induced lethal inflammation. CGA-JK3 ameliorated E. coli lipopolysaccharide (LPS, MD-2/TLR4 agonist)-induced endotoxic shock, cecal ligation and puncture (CLP)-challenged septic shock or LPS plus D-galactosamine (GalN)-induced acute liver failure (ALF) in C57BL/6J mice...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28143561/transcriptomic-responses-of-water-buffalo-liver-to-infection-with-the-digenetic-fluke-fasciola-gigantica
#6
Fu-Kai Zhang, Xiao-Xuan Zhang, Hany M Elsheikha, Jun-Jun He, Zhao-An Sheng, Wen-Bin Zheng, Jian-Gang Ma, Wei-Yi Huang, Ai-Jiang Guo, Xing-Quan Zhu
BACKGROUND: Fasciola gigantica, the tropical liver fluke, infects buffaloes in Asian and African countries and causes significant economic losses and poses public health threat in these countries. However, little is known of the transcriptional response of buffaloes to infection with F. gigantica. The objective of the present study was to perform the first transcriptomic analysis of buffalo liver infected by F. gigantica. Understanding the mechanisms that underpin F. gigantica infection in buffaloes will contribute to our ability to control this parasite...
February 1, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28120431/central-role-of-the-tir-domain-containing-adaptor-inducing-interferon-%C3%AE-trif-adaptor-protein-in-murine-sterile-liver-injury
#7
Katherine J Brempelis, Sebastian Y Yuen, Nicole Schwarz, Isaac Mohar, Ian N Crispe
: Multiple pathways drive the sterile injury response in the liver; however, it is unclear how the type of cells injured or the mechanism of injury activates these pathways. Here, we use a model of selective hepatocyte death to investigate sterile liver injury. In this model, the TIR-domain-containing adaptor-inducing interferon-β (TRIF) was a central mediator of the resulting intrahepatic inflammatory response that was independent of both upstream Toll-like receptor (TLR) 4 signaling and downstream type I IFN signaling...
January 24, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28104981/sodium-butyrate-attenuates-high-fat-diet-induced-steatohepatitis-in-mice-by-improving-gut-microbiota-and-gastrointestinal-barrier
#8
Da Zhou, Qin Pan, Feng-Zhi Xin, Rui-Nan Zhang, Chong-Xin He, Guang-Yu Chen, Chang Liu, Yuan-Wen Chen, Jian-Gao Fan
AIM: To investigate whether gut microbiota metabolite sodium butyrate (NaB) is an effective substance for attenuating non-alcoholic fatty liver disease (NAFLD) and the internal mechanisms. METHODS: Male C57BL/6J mice were divided into three groups, normal control were fed standard chow and model group were fed a high-fat diet (HFD) for 16 wk, the intervention group were fed HFD for 16 wk and treated with NaB for 8 wk. Gut microbiota from each group were detected at baseline and at 16 wk, liver histology were evaluated and gastrointestinal barrier indicator such as zonula occluden-1 (ZO-1) were detected by immunohistochemistry and realtime-PCR, further serum or liver endotoxin were determined by ELISA and inflammation- or metabolism-associated genes were quantified by real-time PCR...
January 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28099145/down-regulation-of-toll-like-receptor-4-alleviates-intestinal-ischemia-reperfusion-injury-and-acute-lung-injury-in-mice
#9
Qiankun Zhu, Guizhen He, Jie Wang, Yukang Wang, Wei Chen, Tai Guo
Intestinal ischemia reperfusion (IR) injury is a critical problem, which can cause intestinal injury locally and acute lung injury (ALI) distally by inflammatory responses and oxidative stress. Toll-like receptor 4 (TLR4) is involved in innate immune and inflammatory responses. This study was to determine whether TLR4 mutant can attenuate intestinal and lung injuries after intestinal IR. Wild type (WT) and TLR4 mutant mice were submitted to intestinal IR by occluding the superior mesenteric artery. Histological assessment of the intestine and the lung were conducted by HE staining...
January 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28060832/better-management-of-alcohol-liver-disease-using-a-microstructured-synbox-system-comprising-l-plantarum-and-egcg
#10
Praveen Rishi, Sumeha Arora, Ujjwal Jit Kaur, Kanwaljit Chopra, Indu Pal Kaur
Synergistic combination of probiotics with carbohydrate based prebiotics is widely employed for the treatment of various gut related disorders. However, such carbohydrate based prebiotics encourage the growth of pathogens and probiotics, equally. Aim of the study was (i) to explore the possibility of using epigallocatechin gallate (EGCG) a phenolic compound, as a prebiotic for L.plantarum; (ii) to develop and evaluate a microstructured synbox (microencapsulating both probiotic and EGCG together) in rat model of alcohol liver disease (ALD); and, (iii) to confirm whether the combination can address issues of EGCG bioavailability and probiotic survivability in adverse gut conditions...
2017: PloS One
https://www.readbyqxmd.com/read/28038359/green-tea-extract-treatment-reduces-nf%C3%AE%C2%BAb-activation-in-mice-with-diet-induced-nonalcoholic-steatohepatitis-by-lowering-tnfr1-and-tlr4-expression-and-ligand-availability
#11
Jinhui Li, Teryn N Sapper, Eunice Mah, Meredith V Moller, Joshua B Kim, Chureeporn Chitchumroonchokchai, Joshua D McDonald, Richard S Bruno
NFκB-mediated inflammation contributes to liver injury during nonalcoholic steatohepatitis (NASH). We hypothesized that antiinflammatory activities of green tea extract (GTE) during NASH would lower tumor necrosis factor receptor-1 (TNFR1)- and Toll-like receptor-4 (TLR4)-mediated NFκB activation. Male C57BL6/J mice (6 weeks old) were fed a low-fat (LF) or high-fat (HF) diet for 12 weeks to induce NASH. They were then randomized to continue on these diets supplemented with 0 or 2% GTE (n=10/group) for an additional 8 weeks prior to evaluating NASH, NFκB inflammation and TNFR1 and TLR4 receptor complexes and their respective ligands, TNFα and endotoxin...
December 21, 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/27986871/hiv-infection-of-kupffer-cells-results-in-an-amplified-proinflammatory-response-to-lps
#12
Arevik Mosoian, Lumin Zhang, Feng Hong, Francesc Cunyat, Adeeb Rahman, Riti Bhalla, Ankur Panchal, Yedidya Saiman, M Isabel Fiel, Sander Florman, Sasan Roayaie, Myron Schwartz, Andrea Branch, Mario Stevenson, Meena B Bansal
End-stage liver disease is a common cause of non-AIDS-related mortality in HIV(+) patients, despite effective anti-retroviral therapies (ARTs). HIV-1 infection causes gut CD4 depletion and is thought to contribute to increased gut permeability, bacterial translocation, and immune activation. Microbial products drain from the gut into the liver via the portal vein where Kupffer cells (KCs), the resident liver macrophage, clear translocated microbial products. As bacterial translocation is implicated in fibrogenesis in HIV patients through unclear mechanisms, we tested the hypothesis that HIV infection of KCs alters their response to LPS in a TLR4-dependent manner...
December 16, 2016: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/27941348/protective-effects-of-2-dodecyl-6-methoxycyclohexa-2-5-diene-1-4-dione-isolated-from-averrhoa-carambola-l-oxalidaceae-roots-on-high-fat-diet-induced-obesity-and-insulin-resistance-in-mice
#13
Juman Li, Xiaojie Wei, Qiuqiao Xie, Thi Thai Hoa Pham, Jinbin Wei, Ping He, Yang Jiao, Xiaohui Xu, Thi Huong Giang Nguyen, Qingwei Wen, Renbin Huang
BACKGROUND/AIMS: The roots of Averrhoa carambola L. (Oxalidaceae) have long been used as a traditional Chinese medicine for the treatment of diabetes and diabetes-related diseases. 2-dodecyl-6-methoxycycyclohexa-2,5-1,4-dione (DMDD) has been isolated from A. carambola L. roots, and this study was carried out to investigate the potential beneficial effects of DMDD on obesity and insulin resistance induced by a high-fat diet (HFD) in mice. METHODS: C57BL/6J mice were fed a HFD for 16 weeks and orally administered DMDD (12...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27923447/amelioration-of-non-alcoholic-fatty-liver-disease-with-npc1l1-targeted-igy-or-n-3-polyunsaturated-fatty-acids-in-mice
#14
Jin-Sik Bae, Jong-Min Park, Junghoon Lee, Byung-Chul Oh, Sang-Ho Jang, Yun Bin Lee, Young-Min Han, Chan-Young Ock, Ji-Young Cha, Ki-Baik Hahm
Patients with non-alcoholic fatty liver disease (NAFLD) have an increased risk for progression to hepatocellular carcinoma in addition to comorbidities such as cardiovascular and serious metabolic diseases; however, the current therapeutic options are limited. Based on our previous report that omega-3 polyunsaturated fatty acids (n-3 PUFAs) can significantly ameliorate high fat diet (HFD)-induced NAFLD, we explored the therapeutic efficacy of n-3 PUFAs and N-IgY, which is a chicken egg yolk-derived IgY specific for the Niemann-Pick C1-Like 1 (NPC1L1) cholesterol transporter, on NAFLD in mice...
January 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/27899278/benznidazole-the-trypanocidal-drug-used-for-chagas-disease-induces-hepatic-nrf2-activation-and-attenuates-the-inflammatory-response-in-a-murine-model-of-sepsis
#15
Flavia Lambertucci, Omar Motiño, Silvina Villar, Juan Pablo Rigalli, María de Luján Alvarez, Viviana A Catania, Paloma Martín-Sanz, Cristina Ester Carnovale, Ariel Darío Quiroga, Daniel Eleazar Francés, María Teresa Ronco
Molecular mechanisms on sepsis progression are linked to the imbalance between reactive oxygen species (ROS) production and cellular antioxidant capacity. Previous studies demonstrated that benznidazole (BZL), known for its antiparasitic action on Trypanosoma cruzi, has immunomodulatory effects, increasing survival in C57BL/6 mice in a model of polymicrobial sepsis induced by cecal ligation and puncture (CLP). The mechanism by which BZL inhibits inflammatory response in sepsis is poorly understood. Also, our group recently reported that BZL is able to activate the nuclear factor erytroide-derived 2-Like 2 (NRF2) in vitro...
November 27, 2016: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/27895422/genetic-polymorphism-in-cd14-gene-a-co-receptor-of-tlr4-associated-with-non-alcoholic-fatty-liver-disease
#16
Shweta Kapil, Ajay Duseja, Bal Krishan Sharma, Bhupesh Singla, Anuradha Chakraborti, Ashim Das, Pallab Ray, Radha K Dhiman, Yogesh Chawla
AIM: To evaluate the pathogenic role of toll-like receptor (TLR) gene polymorphisms in patients with non-alcoholic fatty liver disease (NAFLD). METHODS: Two hundred and fifty subjects (NAFLD = 200, healthy volunteers = 50) underwent polymerase chain reaction and restriction fragment length polymorphism to assess one polymorphism in the toll-like receptor 2 (TLR2) gene (A753G), two polymorphisms in the TLR4 gene (TLR4 Asp299Gly and Thr399Ile allele), and two polymorphisms in the cluster of differentiation 14 (CD14) (C-159T and C-550T) gene, a co-receptor of TLR4...
November 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27875107/the-effect-of-elevated-intra-abdominal-pressure-on-tlr4-signaling-in-intestinal-mucosa-and-on-intestinal-bacterial-translocation-in-a-rat
#17
Adam Strier, Dragan Kravarusic, Arnold G Coran, Isaac Srugo, Nir Bitterman, Tatiana Dorfman, Yulia Pollak, Ibrahim Matter, Igor Sukhotnik
BACKGROUND: Recent evidence suggests that elevated intra-abdominal pressure (IAP) may adversely affect the intestinal barrier function. Toll-like receptor 4 (TLR-4) is responsible for the recognition of bacterial endotoxin or lipopolysaccharide and for initiation of the Gram-negative septic shock syndrome. The objective of the current study was to determine the effects of elevated IAP on intestinal bacterial translocation (BT) and TLR-4 signaling in intestinal mucosa in a rat model. METHODS: Male Sprague-Dawley rats were randomly assigned to one of two experimental groups: sham animals (Sham) and IAP animals who were subjected to a 15 mmHg pressure pneumoperitoneum for 30 minutes...
February 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/27857173/endotoxemia-contributes-to-cd27-memory-b-cell-apoptosis-via-enhanced-sensitivity-to-fas-ligation-in-patients-with-cirrhosis
#18
Li-Yuan Chang, Yonghai Li, David E Kaplan
Peripheral CD27(+) memory B-cells become quantitatively reduced and dysfunctional in patients with cirrhosis through poorly characterized mechanisms. We hypothesized that the disappearance of CD27(+) memory B-cells results from enhanced sensitivity to apoptosis caused by exposure to gut microbial translocation products. Using isolated naïve and memory B-cells from patients with cirrhosis and age-matched controls, ex vivo and activation-induced sensitivity to Fas-mediated apoptosis was assessed under relevant experimental conditions...
November 18, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27834881/salidroside-regulates-inflammatory-response-in-raw-264-7-macrophages-via-tlr4-tak1-and-ameliorates-inflammation-in-alcohol-binge-drinking-induced-liver-injury
#19
Peng Sun, Shun-Zong Song, Shuang Jiang, Xia Li, You-Li Yao, Yan-Ling Wu, Li-Hua Lian, Ji-Xing Nan
The current study was designed to investigate the anti-inflammatory effect of salidroside (SDS) and the underlying mechanism by using lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages in vitro and a mouse model of binge drinking-induced liver injury in vivo. SDS downregulated protein expression of toll-like receptor 4 (TLR4) and CD14. SDS inhibited LPS-triggered phosphorylation of LPS-activated kinase 1 (TAK1), p38, c-Jun terminal kinase (JNK), and extracellular signal-regulated kinase (ERK). Degradation of IκB-α and nuclear translocation of nuclear factor (NF)-κB were effectively blocked by SDS...
November 9, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27830004/ferulic-acid-attenuated-acetaminophen-induced-hepatotoxicity-though-down-regulating-the-cytochrome-p-2e1-and-inhibiting-toll-like-receptor-4-signaling-mediated-inflammation-in-mice
#20
Junhui Yuan, Kuang Ge, Junhuan Mu, Jiang Rong, Li Zhang, Bin Wang, Jingyuan Wan, Gong Xia
Ferulic acid (FA), a phenolic acid which is abundant in vegetables and fruits, has been reported to exert anti-oxidative and anti-inflammatory activities. In the present study, the pharmacological effects and the underlying mechanisms of FA in mice with acetaminophen-induced hepatotoxicity were investigated. Our results revealed that FA pretreatment inhibited the augments of serum aminotransferases in a dose-dependent manner and attenuated the hepatic histopathological abnormalities and hepatocellular apoptosis in acetaminophen (APAP) exposed mice...
2016: American Journal of Translational Research
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