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Cholestasis

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https://www.readbyqxmd.com/read/28646549/inhibition-of-jnk-signaling-mediates-ppar%C3%AE-dependent-protection-against-intrahepatic-cholestasis-by-fenofibrate
#1
Manyun Dai, Julin Yang, Minzhu Xie, Jiao Lin, Min Luo, Huiying Hua, Gangming Xu, Hante Lin, Danjun Song, Yuqing Cheng, Bin Guo, Jinshun Zhao, Frank J Gonzalez, Aiming Liu
BACKGROUND AND PURPOSE: Fenofibrate, a PPARα agonist, is the most widely prescribed drug for the treatment of hyperlipidemia. Although fibrate drugs were reported to be beneficial for cholestasis, the underlying mechanism has not been determined. EXPERIMENTAL APPROACH: Wild-type mice and Pparα-null mice were orally pretreated with fenofibrate for three days, following which ANIT was administered to induce cholestasis. The potent experimental PPARα agonist WY14643 was used to validate the role of PPARα, and the JNK inhibitor SP600125 was employed to explore the role of the JNK pathway in cholestatic liver injury...
June 23, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28646179/herbal-medicine-yinchenhaotang-protects-against-%C3%AE-naphthylisothiocyanate-induced-cholestasis-in-rats
#2
Jingyu Yan, Guoxiang Xie, Chungeng Liang, Yiyang Hu, Aihua Zhao, Fengjie Huang, Ping Hu, Ping Liu, Wei Jia, Xiaoning Wang
Cholestasis is a clinical disorder defined as an impairment of bile flow, and that leads to toxic bile acid (BA) accumulation in hepatocytes. Here, we investigated the hepatoprotective effect of Yinchenhaotang (YCHT), a well-known formulae for the treatment of jaundice and liver disorders, against the cholestasis using the α-naphthylisothiocyanate (ANIT)-induced cholestasis in male Wistar rats. ANIT feeding induced significant cholestasis with substantially increased intrahepatic retention of hydrophobic BAs...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28644566/clinical-characteristics-and-outcome-of-liver-transplantation-for-alagille-syndrome-in-children
#3
Tao Zhou, Jianjun Zhang, Yi Luo, Yuan Liu, Sy Zhuang, Feng Xue, Longzhi Han, Qiang Xia
AIM: The aim of this study was to analyze clinical characteristics and outcome of liver transplantation for Alagille syndrome in children. METHOD: By retrospectively reviewing the medical records of 9 Alagille syndrome patients(AGS) with liver transplantation(LT) in Renji Hospital between 2006 and 2015,After operative,the height and weight Z score were compared with preoperative. RESULT: There were 9 patients included in the study; cholestasis and peculiar faces were seen in all of the patients (100%), heart defect in 8 patients (88...
June 23, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28635176/genetic-loss-of-the-muscarinic-m3-receptor-m3-r-markedly-alters-bile-formation-and-cholestatic-liver-injury-in-mice
#4
Franziska Durchschein, Elisabeth Krones, Marion J Pollheimer, Gernot Zollner, Martin Wagner, Jean-Pierre Raufman, Peter Fickert
Hepatic innervation represents a potentially underestimated regulator of liver function and regeneration. The muscarinic 3 receptor (M3 -R) is the primary cholangiocyte receptor for the afferent parasympathetic innervation of bile ducts. We aimed to determine the specific role of the M3 -R in bile formation and models for cholestatic liver disease in mice. We compared bile flow and composition in M3 -R knock-out mice (M3 -R(-/-) ) and wild type littermates (WT). M3 -R(-/-) mice showed significantly reduced bile flow compared to WT mice, most likely due to decreased biliary HCO3(-) secretion...
June 21, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28630805/dermatitis-herpetiformis-as-the-initial-presentation-of-primary-biliary-cholangitis-in-a-male-with-gluten-sensitivity
#5
Cyriac Philips, Rajaguru Paramaguru, Divya A Indiran, Philip Augustine
Celiac disease is commonly associated with elevated liver enzymes that normalize on a gluten-free diet. Celiac disease is rarely described in patients with primary biliary cholangitis. Dermatitis herpetiformis is the skin manifestation of the celiac disease that is very rarely associated with primary biliary cirrhosis. We present the case of a 62-year-old man who presented with severe chronic pruritus, in whom a diagnosis of primary biliary cholangitis was made initially. However, in the presence of atypical skin lesions, not confirming to chronic cholestasis, an in-depth evaluation including histopathological examination led to the diagnosis of dermatitis herpetiformis associated with gluten sensitivity...
May 14, 2017: Curēus
https://www.readbyqxmd.com/read/28629226/no-significant-impact-of-foxf1-sirna-treatment-in-acute-and-chronic-ccl4-liver-injury
#6
Kerstin Abshagen, Tobias Rotberg, Berit Genz, Brigitte Vollmar
Chronic liver injury of any etiology is the main trigger of fibrogenic responses and thought to be mediated by hepatic stellate cells. Herein, activating transcription factors like forkhead box f1 are described to stimulate pro-fibrogenic genes in hepatic stellate cells. By using a liver-specific siRNA delivery system (DBTC), we evaluated whether forkhead box f1 siRNA treatment exhibit beneficial effects in murine models of acute and chronic CCl4-induced liver injury. Systemic administration of DBTC-forkhead box f1 siRNA in mice was only sufficient to silence forkhead box f1 in acute CCl4 model, but was not able to attenuate liver injury as measured by liver enzymes and necrotic liver cell area...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28619387/evaluation-of-ameliorative-ability-of-silibinin-against-zidovudine-and-isoniazid-induced-hepatotoxicity-and-hyperlipidaemia-in-rats-role-of-silibinin-in-phase-i-and-ii-drug-metabolism
#7
Raghu Ramanathan, Karthikeyan Sivanesan
HIV/AIDS patients have suppressed immune system, making them vulnerable to many opportunistic infections including tuberculosis (TB). The patients who are co-infected with TB undergo combined regimens with anti-retroviral drugs such as zidovudine (AZT) and anti-tubercular drug such as isoniazid (INH) for therapy leading to hepatotoxicty. Silibinin (SBN), extracted from Silybum marianum commonly called as "Milk thistle" is used against several drugs-induced hepatotoxicity. The present study evaluates the ameliorative effect of SBN against AZT alone, INH alone, and INH + AZT-induced toxic insults to liver of rats...
June 13, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28618047/focal-b-catenin-mutation-identified-on-formalin-fixed-and-paraffin-embedded-inflammatory-hepatocellular-adenomas
#8
Joan Saldarriaga, Bettina Bisig, Gabrielle Couchy, Claire Castain, Jessica Zucman-Rossi, Charles Balabaud, Christine Sempoux, Paulette Bioulac-Sage
The identification of hepatocellular adenoma (HCA) with mutation in exon 3 of the CTNNB1 gene encoding for b-catenin is clinically relevant due to higher risk of malignant transformation. Inflammatory HCA (IHCA) can exhibit b-catenin activation (b-IHCA). We report 2 cases with multiple IHCA in which focal b-catenin activation has been found in one of the IHCA. In both cases, the diagnosis of IHCA was confirmed on the resected nodules by routine stains, immunohistochemical detection of C-reactive protein (CRP), and molecular biology on frozen material...
June 15, 2017: Histopathology
https://www.readbyqxmd.com/read/28617828/erad-defects-and-the-hfe-h63d-variant-are-associated-with-increased-risk-of-liver-damages-in-alpha-1-antitrypsin-deficiency
#9
Philippe Joly, Hélène Vignaud, Julie Di Martino, Mathias Ruiz, Roman Garin, Lioara Restier, Abdelouahed Belmalih, Christelle Marchal, Christophe Cullin, Benoit Arveiler, Patricia Fergelot, Aaron D Gitler, Alain Lachaux, Julien Couthouis, Marion Bouchecareilh
BACKGROUND: The most common and severe disease causing allele of Alpha 1-Antitrypsin Deficiency (1ATD) is Z-1AT. This protein aggregates in the endoplasmic reticulum, which is the main cause of liver disease in childhood. Based on recent evidences and on the frequency of liver disease occurrence in Z-1AT patients, it seems that liver disease progression is linked to still unknown genetic factors. METHODS: We used an innovative approach combining yeast genetic screens with next generation exome sequencing to identify and functionally characterize the genes involved in 1ATD associated liver disease...
2017: PloS One
https://www.readbyqxmd.com/read/28617032/intraductal-papillary-neoplasia-of-the-bile-duct-with-malignancy-a-differentiated-entity-of-cholangiocarcinoma-with-a-better-prognosis-a-review-of-three-new-cases
#10
Baltasar Pérez Saborido, Martín Bailón Cuadrado, Mario Rodríguez López, Enrique Asensio Díaz, Beatriz Madrigal Rubiales, Asterio Barrera Rebollo
INTRODUCTION: Intraductal papillary neoplasms of the bile duct have been recognized as a differentiated entity to other biliary tumors since 2001. They are characterized by intraductal growth, with or without mucus production, and have malignant potential, although they have a better prognosis than other types of cholangiocarcinoma. MATERIAL AND METHODS: From January 2010 to August 2015, we included three patients with a confirmed diagnosis of bile duct intraductal papillary neoplasia with malignancy that were treated at our center...
June 15, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28612126/immaturity-of-bile-canalicular-ductule-networks-in-the-future-liver-remnant-while-associating-liver-partition-and-portal-vein-occlusion-for-staged-hepatectomy-alpps
#11
Kenichi Matsuo, Yukihiko Hiroshima, Kazuto Yamazaki, Kohei Kasahara, Yutaro Kikuchi, Daisuke Kawaguchi, Takashi Murakami, Yasuo Ishida, Kuniya Tanaka
BACKGROUND: We studied histologic changes of bile canalicular-ductule networks in the future liver remnant (FLR) while associating liver partition and portal vein occlusion for staged hepatectomy (ALPPS), since little is known about regeneration of these networks during the relatively short interval between procedures in ALPPS. METHODS: Bile canalicular-ductule networks were examined in specimens from eight patients treated with ALPPS and six patients undergoing hepatectomy following portal vein embolization (PVE)...
June 13, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28611260/sensitivity-and-specificity-of-biochemical-tests-for-diagnosis-of-intrahepatic-cholestasis-of-pregnancy
#12
Jurate Kondrackiene, Rimantas Zalinkevicius, Jolanta Sumskiene, Vladas Gintautas, Limas Kupcinskas
BACKGROUND AND AIM: Intrahepatic cholestasis of pregnancy (ICP) is linked with increased risk of fetal complications. An accurate diagnostic test is needed to diagnose this disorder on time. We aimed to assess sensitivity and specificity of laboratory tests used for diagnosis of intrahepatic cholestasis of pregnancy and determine more reliable cut-off values of transaminases. MATERIAL AND METHODS: Sixty one symptomatic patients with ICP and 29 healthy pregnant women were included in the retrospective analysis...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28611259/prevalence-risk-factors-and-survival-of-patients-with-intrahepatic-cholangiocarcinoma
#13
Paulina Chinchilla-López, Nancy Aguilar-Olivos, Jaime García-Gómez, Karen Hernández-Alejandro, Fredy Chablé-Montero, Daniel Motola-Kuba, Tushar Patel, Nahum Mendez-Sánchez
PURPOSE: To investigate the prevalence, related risk factors, and survival of intrahepatic cholangiocarcinoma in a Mexican population. MATERIAL AND METHODS: We conducted a cross-sectional study at Medica Sur Hospital in Mexico City with approval of the local research ethics committee. We found cases by reviewing all clinical records of in-patients between October 2005 and January 2016 who had been diagnosed with malignant liver tumors. Clinical characteristics and comorbidities were obtained to evaluate the probable risk factors and the Charlson index...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28607998/highlight-report-adaptations-of-the-biliary-tree-to-cholestasis
#14
EDITORIAL
Reham Hassan
No abstract text is available yet for this article.
June 12, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28606651/mechanisms-of-bile-acid-mediated-inflammation-in-the-liver
#15
REVIEW
Man Li, Shi-Ying Cai, James L Boyer
Bile acids are synthesized in the liver and are the major component in bile. Impaired bile flow leads to cholestasis that is characterized by elevated levels of bile acid in the liver and serum, followed by hepatocyte and biliary injury. Although the causes of cholestasis have been extensively studied, the molecular mechanisms as to how bile acids initiate liver injury remain controversial. In this chapter, we summarize recent advances in the pathogenesis of bile acid induced liver injury. These include bile acid signaling pathways in hepatocytes as well as the response of cholangiocytes and innate immune cells in the liver in both patients with cholestasis and cholestatic animal models...
June 9, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28604124/test-systems-in-drug-discovery-for-hazard-identification-and-risk-assessment-of-human-drug-induced-liver-injury
#16
Richard J Weaver, Catherine Betts, Eric A G Blomme, Helga H J Gerets, Klaus Gjervig Jensen, Philip G Hewitt, Satu Juhila, Gilles Labbe, Michael J Liguori, Natalie Mesens, Monday O Ogese, Mikael Persson, Jan Snoeys, James L Stevens, Tracy Walker, B Kevin Park
Introduction The liver is an important target for drug-induced toxicities. Early detection of hepatotoxic drugs requires use of well-characterized test systems, yet current knowledge, gaps and limitations of tests employed remains an important issue for drug development. Areas Covered The current state of the science, understanding and application of test systems in use for the detection of drug-induced cytotoxicity, mitochondrial toxicity, cholestasis and inflammation is summarized. The test systems highlighted herein cover mostly in vitro and some in vivo models and endpoint measurements used in the assessment of small molecule toxic liabilities...
June 12, 2017: Expert Opinion on Drug Metabolism & Toxicology
https://www.readbyqxmd.com/read/28601073/role-of-na-k-atpase-in-natriuretic-effect-of-prolactin-in-a-model-of-cholestasis-of-pregnancy
#17
P A Abramicheva, T A Balakina, O A Bulaeva, A A Guseva, O D Lopina, O V Smirnova
Participation of Na+/K+-ATPase in the natriuretic effect of prolactin in a cholestasis of pregnancy model was investigated. The Na+/K+-ATPase activity in rat kidney medulla, where active sodium reabsorption occurs, decreased in the model of cholestasis of pregnancy and other hyperprolactinemia types compared with intact animals. This effect was not connected with the protein level of α1- and β-subunits of Na+/K+-ATPase measured by Western blotting in the kidney medulla. Decrease in Na+/K+-ATPase activity in the kidney cortex was not significant, as well as decrease in the quantity of mRNA and proteins of the α1- and β-subunits of Na+/K+-ATPase...
May 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28600664/optimizing-care-and-outcome-of-neonatal-cholestasis-are-we-on-the-right-track
#18
REVIEW
Anshu Srivastava
No abstract text is available yet for this article.
June 10, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28590831/effects-of-testosterone-administration-on-liver-structure-and-function-in-aging-rats
#19
Ricardo Aparecido Baptista Nucci, Ana Caroline de Souza Teodoro, Walter Krause Neto, Wellington de Assis Silva, Romeu Rodrigues de Souza, Carlos Alberto Anaruma, Eliane Florencio Gama
Aging males have a decrease in testosterone levels, by which the testosterone treatment may influence in a negatively fashion the liver. AIM: This study aimed to analyze the effects of aging with or without testosterone administration on the liver components of animals. METHODS: Wistar rats were divided into three groups: 20 months' group (G20), 24 months' group (G24), group treated with testosterone for 16 weeks (GT). All groups were sacrificed at 24 months except for G20 that was sacrificed at 20 months...
June 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28590786/liver-fibrosis-associated-with-crigler-najjar-syndrome-in-a-compound-heterozygote
#20
Cynthia R Fata, Lynette A Gillis, M Cristina Pacheco
Crigler-Najjar syndrome is a hereditary unconjugated hyperbilirubinemia. Two forms of the disease are recognized. Type I is more severe and results in kernicterus if left untreated, and Type II is less severe and responds to phenobarbital. While Crigler-Najjar syndrome is thought by many to have normal liver histology, few reports of the liver pathology exist. Herein, we present a 19-year-old patient with Crigler-Najjar who underwent liver transplantation. The liver showed marked canalicular cholestasis with portal and variable, delicate, bridging fibrosis...
January 1, 2017: Pediatric and Developmental Pathology
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