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https://www.readbyqxmd.com/read/28721202/defining-the-inflammatory-signature-of-human-lung-explant-tissue-in-the-presence-and-absence-of-glucocorticoid
#1
Tracy L Rimington, Emily Hodge, Charlotte K Billington, Sangita Bhaker, Binaya K C, Iain Kilty, Scott Jelinsky, Ian P Hall, Ian Sayers
BACKGROUND:  Airway inflammation is a feature of many respiratory diseases and there is a need for newer, more effective anti-inflammatory compounds. The aim of this study was to develop an ex vivo human lung explant model which can be used to help study the mechanisms underlying inflammatory responses and which can provide a tool to aid drug discovery for inflammatory respiratory diseases such as asthma and COPD. METHOD:  Parenchymal lung tissue from 6 individual donors was dissected and cultured with two pro-inflammatory stimuli, lipopolysaccharide (LPS) (1 µg/ml) and interleukin-1 beta (IL-1β) (10 ng/ml) in the presence or absence of dexamethasone (1 µM)...
2017: F1000Research
https://www.readbyqxmd.com/read/28714319/protective-effect-of-teucrium-polium-on-carbon-tetrachloride-induced-genotoxicity-and-oxidative-stress-in-rats
#2
Fatma Rahmouni, Mongi Saoudi, Nahed Amri, Abdelfattah El-Feki, Tarek Rebai, Riadh Badraoui
This study aimed to investigate the protective effects of Teucrium polium (TP) on carbon tetrachloride (CCl4) induced spleen, erythrocyte's oxidative stress, and genotoxicity in rats. TP was found to contain large amounts of polyphenols (150 mg GAE/G of dry plant) and flavonoids (60 mg QE/g of quercetin dry plant). The CCl4 (0.5 ml/kg) treated rats exhibited significant reductions in serum vitamin A (VA), vitamin E (VE) and total antioxidant status (TAS). Thiobarbituric acid reactive substances (TBARS) and conjugated dienes (CD) were significantly high in the CCl4 group compared to controls...
July 16, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28713991/pien-tze-huang-gan-bao-attenuates-carbon-tetrachloride%C3%A2-induced-hepatocyte-apoptosis-in-rats-associated-with-suppression-of-p53-activation-and-oxidative-stress
#3
Jinyan Zhao, Yuchen Zhang, Yun Wan, Haixia Hu, Zhenfeng Hong
Pien Tze Huang Gan Bao (PZH‑GB), a traditional Chinese medicine, has been used for thousands of years as a protective remedy effective against liver injury induced by excessive alcohol and smoking. The present study aimed to evaluate the protective effects and potential mechanisms of PZH‑GB against carbon tetrachloride (CCl4)‑induced hepatic injury. Rats were pre‑treated with silymarin (50 mg/kg) or different doses of PZH‑GB (150, 300 or 600 mg/kg) orally administered for 7 days. At the end of treatment, the rats were intraperitoneally injected with CCl4, or control rats received a corn oil injection...
July 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713871/immune-dysfunctionality-of-replicative-senescent-mesenchymal-stromal-cells-is-corrected-by-ifn%C3%AE-priming
#4
Raghavan Chinnadurai, Devi Rajan, Spencer Ng, Kenneth McCullough, Dalia Arafat, Edmund K Waller, Larry J Anderson, Greg Gibson, Jacques Galipeau
Industrial-scale expansion of mesenchymal stromal cells (MSCs) is often used in clinical trials, and the effect of replicative senescence on MSC functionality is of mechanistic interest. Senescent MSCs exhibit cell-cycle arrest, cellular hypertrophy, and express the senescent marker β-galactosidase. Although both fit and senescent MSCs display intact lung-homing properties in vivo, senescent MSCs acquire a significant defect in inhibiting T-cell proliferation and cytokine secretion in vitro. IFNγ does not upregulate HLA-DR on senescent MSCs, whereas its silencing did not reverse fit MSCs' immunosuppressive properties...
April 25, 2017: Blood Advances
https://www.readbyqxmd.com/read/28712861/a-novel-golgi-cox-staining-method-for-detecting-and-characterizing-roles-of-the-hepatic-stellate-cells-in-liver-injury
#5
Ma de Jesús Gómez Villalobos, Susana Vidrio, Ruth Giles López, Gabriel Flores Gómez, Victoria Chagoya de Sánchez
The aim of this study was to investigate the utility of the Golgi-Cox method to characterize the distribution and morphological changes of the hepatic stellate cells (HSCs) in CCl4 liver damaged rats. Six-week-old male Wistar rats were injected with CCl4 for ten weeks. The livers were processed with the Golgi-Cox method, reticuline, and Massońs Trichrome stains, and analyzed under light microscopy. Histological evaluation of livers was made through the METAVIR score. In normal livers, the HSCs show stellate form with abundant thin cytoplasmic processes, distributed into hepatic lobule, mainly in zone 1...
June 30, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/28710422/enmd-1068-inhibits-liver-fibrosis-through-attenuation-of-tgf-%C3%AE-1-smad2-3-signaling-in-mice
#6
Quan Sun, Yan Wang, Jie Zhang, Jing Lu
Protease-activated receptor 2 (PAR-2) plays an important role in the pathogenesis of liver fibrosis. We studied the effect of N1-3-methylbutyryl-N4-6-aminohexanoyl-piperazine (ENMD-1068), a PAR-2 antagonist, on the development of CCl4-induced liver fibrosis in mice and activation of hepatic stellate cells (HSCs) isolated from the mice. Before CCl4 injection, the mice were injected intraperitoneally with either 25 mg/kg or 50 mg/kg ENMD-1068 or with 200 μL of the vehicle control twice per week for 4 weeks...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28706418/naringenin-prevents-experimental-liver-fibrosis-by-blocking-tgf%C3%AE-smad3-and-jnk-smad3-pathways
#7
Erika Hernández-Aquino, Natanael Zarco, Sael Casas-Grajales, Erika Ramos-Tovar, Rosa E Flores-Beltrán, Jonathan Arauz, Mineko Shibayama, Liliana Favari, Víctor Tsutsumi, José Segovia, Pablo Muriel
AIM: To study the molecular mechanisms involved in the hepatoprotective effects of naringenin (NAR) on carbon tetrachloride (CCl4)-induced liver fibrosis. METHODS: Thirty-two male Wistar rats (120-150 g) were randomly divided into four groups: (1) a control group (n = 8) that received 0.7% carboxy methyl-cellulose (NAR vehicle) 1 mL/daily p.o.; (2) a CCl4 group (n = 8) that received 400 mg of CCl4/kg body weight i.p. 3 times a week for 8 wk; (3) a CCl4 + NAR (n = 8) group that received 400 mg of CCl4/kg body weight i...
June 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28705556/supersonic-shear-wave-imaging-of-the-spleen-for-staging-of-liver-fibrosis-in-rats
#8
Xiang-Dong Hu, Hui-Ying Geng, Lei Wang, Hu-Feng Xu, Yuan Su, Si Liang, Lin-Xue Qian
The goal of the work described here was to explore the cause of spleen stiffness (SS) in hepatic fibrogenesis and evaluate the value of SS in liver fibrosis (LF) staging. LF was induced with carbon tetrachloride (CCl4) in rats (n = 40). Supersonic shear wave imaging and contrast-enhanced ultrasound were performed to determine liver stiffness (LS), SS and splenic hemodynamics. SS, LS and free portal pressure exhibited moderate correlations with fibrosis stage (r = 0.744-0.835, p < 0.001). Time-intensity curves of contrast-enhanced ultrasound for the spleen were presented as decreasing peak intensity and slope of decrease, and increasing time to peak...
July 10, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28701872/ginseng-essence-a-medicinal-and-edible-herbal-formulation-ameliorates-carbon-tetrachloride-induced-oxidative-stress-and-liver-injury-in-rats
#9
Kuan-Hung Lu, Ching-Yi Weng, Wei-Cheng Chen, Lee-Yan Sheen
BACKGROUND: Ginseng essence (GE) is a formulation comprising four medicinal and edible herbs including ginseng (Panax ginseng), American ginseng (Panax quinquefolius), lotus seed (Nelumbo nucifera), and lily bulb (Lilium longiflorum). This study was aimed at investigating the hepatoprotective effect of GE against carbon tetrachloride (CCl4)-induced liver injury in rats. METHODS: We treated Wistar rats daily with low, medium, and high [0.625 g/kg body weight (bw), 1...
July 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28700704/screening-for-the-protective-effect-target-of-deproteinized-extract-of-calf-blood-and-its-mechanisms-in-mice-with-ccl4-induced-acute-liver-injury
#10
Guangyu Xu, Xiao Han, Guangxin Yuan, Liping An, Peige Du
Liver injury is a common pathological basis of various liver diseases, and long-term liver injury is often an important initiation factor leading to liver fibrosis and even liver cirrhosis and hepatocellular carcinoma (HCC). It has been reported that deproteinized extract of calf blood (DECB) can inhibit the replication of hepatitis B virus and confers a protective effect on the liver after traumatic liver injury. However, few studies on the regulatory factors and mechanisms of DECB have been reported. In this current study, an acute mouse liver injury model was established with carbon tetrachloride (CCl4)...
2017: PloS One
https://www.readbyqxmd.com/read/28700350/thymosin-%C3%AE-4-inhibits-proliferation-and-induces-apoptosis-of-hepatic-stellate-cells-through-pi3k-akt-pathway
#11
Lili Zhu, Mingliang Cheng, Yongmei Liu, Yumei Yao, Zixin Zhu, Baofang Zhang, Qiuju Mou, Yiju Cheng
Liver fibrosis is a necessary stage for chronic liver diseases, and serious threat to human health. Hepatic fibrosis is a necessary stage for chronic liver diseases. Hepatic stellate cells (HSCs) are the primary cell type responsible for fibrosis. Thymosin beta 4 (Tβ4) has a potential role in the pathogenesis of liver fibrosis and that it is especially associated with the activation of HSCs, however, the underlying mechanisms are not fully elucidated. Herein, we investigated the potential role of Tβ4 in liver fibrosis by describing the effects of Tβ4, and we discuss the possible signaling pathway regulated by Tβ4...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28694668/potential-application-of-neogalactosylalbumin-in-positron-emission-tomography-evaluation-of-liver-function
#12
Shun-Da Du, Shao-Hua Li, Bao Jin, Zhao-Hui Zhu, Yong-Hong Dang, Hai-Qun Xing, Fang Li, Xue-Bing Wang, Xin Lu, Xin-Ting Sang, Hua-Yu Yang, Shou-Xian Zhong, Yi-Lei Mao
AIM: To investigate the evaluation of neogalactosylalbumin (NGA) for liver function assessment based on positron emission tomography technology. METHODS: Female Kunming mice were assigned randomly to two groups: fibrosis group and normal control group. A murine hepatic fibrosis model was generated by intraperitoneal injection of 10% carbon tetrachloride (CCl4) at 0.4 mL every 48 h for 42 d. (18)F-labeled NGA ([(18)F]FNGA) was synthesized and administered at a dosage of 3...
June 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28693887/novel-1-2-4-triazole-derivatives-as-antitumor-agents-against-hepatocellular-carcinoma
#13
Rasha R Radwan, Nashwa H Zaher, Marwa G El-Gazzar
Fifteen novel 1,2,3-triazole derivatives were prepared in series of synthetic steps starting from 4-amino-5-hydrazino-4H-1,2,4-triazole-3-thiol 1. The structures of the obtained compounds were verified through micoanalytical and spectral data. All the compounds were screened for their anticancer activity against liver human cancer cell lines (HEPG2) using Doxorubicin as standard. The most promising triazolothiadiazine derivative 12 was further tested for its degree of toxicity by estimating the median lethal dose (LD 50) and its antitumor activity through inhibiting the angiogenesis and progression of tumor against diethylnitrosamine (DENA)/CCl4 induced hepatocellular carcinoma (HCC) in rats...
July 8, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28691017/reduction-of-the-oxidative-stress-status-using-steviol-glycosides-in-a-fish-model-cyprinus-carpio
#14
Livier Mireya Sánchez-Aceves, Octavio Dublán-García, Leticia-Xochitl López-Martínez, Karen Adriana Novoa-Luna, Hariz Islas-Flores, Marcela Galar-Martínez, Sandra García-Medina, María Dolores Hernández-Navarro, Leobardo Manuel Gómez-Oliván
Steviol glycosides are sweetening compounds from the Stevia rebaudiana Bertoni plant. This product is considered safe for human consumption and was approved as a food additive by the Food and Drugs Administration (FDA) and European Food Safety Authority (EFSA). Its effects on the ecosystem have not been studied in depth; therefore, it is necessary to carry out ecotoxicological studies in organisms such as Cyprinus carpio. The present study aimed to evaluate the antioxidant activity by SGs on diverse tissues in C...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28689299/4-o-methylhonokiol-protects-from-alcohol-carbon-tetrachloride-induced-liver-injury-in-mice
#15
Eleonora Patsenker, Andrea Chicca, Vanessa Petrucci, Sheida Moghadamrad, Andrea de Gottardi, Jochen Hampe, Jürg Gertsch, Nasser Semmo, Felix Stickel
Alcoholic liver disease (ALD) is a leading cause of liver cirrhosis, liver cancer, and related mortality. The endocannabinoid system contributes to the development of chronic liver diseases, where cannabinoid receptor 2 (CB2) has been shown to have a protecting role. Thus, here, we investigated how CB2 agonism by 4'-O-methylhonokiol (MHK), a biphenyl from Magnolia grandiflora, affects chronic alcohol-induced liver fibrosis and damage in mice. A combination of alcohol (10% vol/vol) and CCl4 (1 ml/kg) was applied to C57BL/6 mice for 5 weeks...
July 8, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28682508/bone-marrow-endothelial-progenitor-cells-activate-hepatic-stellate-cells-and-aggravate-carbon-tetrachloride-induced-liver-fibrosis-in-mice-via-paracrine-factors
#16
Manali Garg, Savneet Kaur, Arpita Banik, Vikash Kumar, Archana Rastogi, Shiv K Sarin, Asok Mukhopadhyay, Nirupma Trehanpati
OBJECTIVES: Bone marrow derived endothelial progenitor cells (BM-EPCs) are increased in chronic liver disease (CLD). Their role in hepatic fibrosis and regeneration remains an area of intense studies. We investigated the migration and secretory functions of BM-EPCs in fibrotic mice liver. MATERIALS AND METHODS: Bone marrow cells from C57BL6-GFP mice were transplanted into the femur of irradiated C57BL6 mice, followed by CCl4 doses for 8 weeks, to develop hepatic fibrosis (n = 36)...
July 6, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28681206/protective-effect-of-ganoderma-lucidum-polysaccharide-against-carbon-tetrachloride-induced-hepatic-damage-in-precision-cut-carp-liver-slices
#17
Yingjuan Liu, Chunyun Zhang, Jinliang Du, Rui Jia, Liping Cao, Galina Jeney, Hiroki Teraoka, Pao Xu, Guojun Yin
The aim of the present study was to investigate the protective effects of Ganoderma lucidum polysaccharide (GLPS) against carbon tetrachloride (CCl4)-induced hepatotoxicity in vitro in common carp. Precision-cut liver slices (PCLSs), which closely resemble the organ from which they are derived, were employed as an in vitro model system. GLPS (0.1, 0.3, and 0.6 mg/ml) was added to PCLS culture system before the exposure to 12 mM CCl4. The supernatants and slices were collected to detect molecular and biochemical responses to CCl4 and PCLS treatments...
July 5, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28677756/protective-effect-and-mechanism-of-ginsenoside-rg1-on-carbon-tetrachloride%C3%A2-induced-acute-liver-injury
#18
Benquan Qi, Suzhi Zhang, Daohua Guo, Sanxing Guo, Xiaodong Jiang, Xiling Zhu
Liver injury is a common pathological state in various types of liver disease; severe or persistent liver damage is the basis of hepatic failure. Ginsenoside Rg1 (Rg1), one of the primary active ingredients of ginseng, has been reported to reduce concanalin A‑induced hepatitis and protect against lipopolysaccharide‑ and galactosamine‑induced liver injury. However, the underlying protective mechanism of Rg1 in acute liver injury remains unclear. In the present study, a carbon tetrachloride (CCl4)‑induced acute liver injury model was established, and the protective effect of Rg1 on CCl4‑induced acute liver injury was demonstrated in cell culture and animal experimental systems...
July 5, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28676458/vitamin-d-deficiency-and-sex-specific-dysregulation-of-placental-inflammation
#19
Nancy Q Liu, Dean P Larner, Qingqiang Yao, Rene F Chun, Yuxin Ouyang, Rui Zhou, Jennifer A Tamblyn, Carol L Wagner, Martin Hewison
To investigate an immunomodulatory role for vitamin D in pregnancy we used mice raised on vitamin D-sufficient (SUFF), or -deficient (DEF) diets. At embryonic day 14, pregnant mice received intraperitoneal injection of lipopolysaccharide (LPS) or vehicle for 24hrs, with age-matched non-pregnant mice as controls. In non-pregnant mice, 6 serum analytes (IL-1β, IL-18, MDC/CCL22, MIP-1α/CCL3, EGF, IgA) were lower in DEF mice. In pregnant DEF mice only GH was higher. In non-pregnant mice LPS induced 28 analytes, with 5 (IL-18, IP-10/CXCL10, MCP-1/CCL2, MIP-1β/CCL4, MIP-3β/CCL19) being highest in DEF mice...
July 1, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28671700/metabolomics-combined-with-pattern-recognition-and-bioinformatics-analysis-methods-for-the-development-of-pharmacodynamic-biomarkers-on-liver-fibrosis
#20
Junwei Fang, Liping Wang, Yang Wang, Mingfeng Qiu, Yongyu Zhang
The major obstacle for the development of targeted therapies is the lack of pharmacodynamic (PD) biomarkers to provide an early readout of biological activities. As the modulation of metabolites may reflect the biological changes occurring in the targets, metabolomics is promising to be an efficient way to explore PD biomarkers. In the present study, a liver fibrosis rat model was established by intraperitoneal injection of CCl4 twice weekly for 6 weeks, the treatment of total aglycone extracts of Scutellaria baicalensis (TAES) was begun 4 weeks after the modeling, and gas chromatography-mass spectrometry (GC-MS) based metabolomics combined with pattern recognition and network analysis were carried out for the research on PD biomarkers of TAES on liver fibrosis...
July 3, 2017: Molecular BioSystems
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