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steatosis and liver transplantation

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https://www.readbyqxmd.com/read/28331449/cyclin-d1-in-the-liver-role-of-noncanonical-signaling-in-liver-steatosis-and-hormone-regulation
#1
Kelley G Núñez, Janet Gonzalez-Rosario, Paul T Thevenot, Ari J Cohen
BACKGROUND: Cyclin D1 is an important protein for cell cycle progression; however, functions independent of the cell cycle have been described in the liver. Cyclin D1 is also involved in DNA repair, is overexpressed in many cancers, and functions as a proto-oncogene. The lesser-known roles of Cyclin D1, specifically in hepatocytes, impact liver steatosis and hormone regulation in the liver. METHODS: A comprehensive search of PubMed was conducted using the keywords Cyclin D1, steatosis, lipogenesis, and liver transplantation...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28328941/cynomolgus-monkeys-are-successfully-and-persistently-infected-with-hepatitis-e-virus-genotype-3-hev-3-after-long-term-immunosuppressive-therapy
#2
Noemi Rovaris Gardinali, Juliana Rodrigues Guimarães, Juliana Gil Melgaço, Yohan Britto Kevorkian, Fernanda de Oliveira Bottino, Yasmine Rangel Vieira, Aline Campos de Azevedo da Silva, Douglas Pereira Pinto, Laís Bastos da Fonseca, Leandro Schiavo Vilhena, Edilson Uiechi, Maria Cristina Carlan da Silva, Julio Moran, Renato Sérgio Marchevsky, Oswaldo Gonçalves Cruz, Rodrigo Alejandro Arellano Otonel, Amauri Alcindo Alfieri, Jaqueline Mendes de Oliveira, Ana Maria Coimbra Gaspar, Marcelo Alves Pinto
Epidemiological studies found that hepatitis E virus genotype 3 (HEV-3) infection was associated with chronic hepatitis and cirrhosis in immunocompromised patients. Our study aimed to investigate the relationship between the host immunosuppressive status and the occurrence of HEV-related chronic hepatitis. Here we describe a successful experimental study, using cynomolgus monkeys previously treated with tacrolimus, a potent calcineurin inhibitor immunosuppressant, and infected with a Brazilian HEV-3 strain isolated from naturally infected pigs...
2017: PloS One
https://www.readbyqxmd.com/read/28296807/long-term-outcomes-in-patients-undergoing-liver-transplantation-for-nonalcoholic-steatohepatitis-related-cirrhosis
#3
Chandra Bhati, Michael O Idowu, Arun J Sanyal, Maria Rivera, Carolyn Driscoll, Richard Todd Stravitz, Divyanshoo R Kohli, Scott Matherly, Puneet Puri, HoChong Giles, Adrian Cotterrell, Marlon Levy, Richard Sterling, Velimir Luketic, Hannah Lee, Amit Sharma, Mohammad Shadab Siddiqui
BACKGROUND: Nonalcoholic steatohepatitis (NASH), a clinically aggressive variant of nonalcoholic fatty liver disease (NAFLD), is becoming an increasingly common indication for liver transplantation (LT); however, relatively little is known regardings its clinical course post-LT. The aim of the current study is to describe disease recurrence and clinical course after LT. METHODS: All surviving patients transplanted for NASH at the authors' institution had transient elastography (TE) to evaluate hepatic steatosis and fibrosis...
March 15, 2017: Transplantation
https://www.readbyqxmd.com/read/28277807/magnetic-resonance-imaging-and-transient-elastography-in-the-management-of-nonalcoholic-fatty-liver-disease-nafld
#4
Ma Ai Thanda Han, Rola Saouaf, Walid Ayoub, Tsuyoshi Todo, Edward Mena, Mazen Noureddin
Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease and cirrhosis worldwide and the second most common cause of liver transplantation in major medical centers. Because liver steatosis and fibrosis severity are related to disease morbidity and mortality, the extent of disease, and disease progression, they need to be assessed and monitored. In addition, innovation with new drug developments requires disease staging and monitoring in both phase 2 and 3 clinical trials. Currently, disease assessment in both clinical practice and research is mostly performed by liver biopsy, an invasive, procedure with risks...
April 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28276821/current-and-future-treatment-options-in-non-alcoholic-steatohepatitis-nash
#5
Nikos Lazaridis, Emmanuel Tsochatzis
Non-alcoholic steatohepatitis (NASH) is a chronic liver disease that can progress to cirrhosis and hepatocellular carcinoma. Diagnosis of NASH requires a liver biopsy and is defined as presence of hepatic steatosis, ballooning and lobular inflammation with or without fibrosis. Although NASH is the most common cause of liver disease in the west world and among the top three indications for liver transplantation, there are no universally accepted pharmacological therapies and therapeutic advances have been slow...
April 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28267886/primary-non-function-is-frequently-associated-with-fatty-liver-allografts-and-high-mortality-after-re-transplantation
#6
Ulf Kulik, Frank Lehner, Jürgen Klempnauer, Jürgen Borlak
BACKGROUND & AIMS: The shortage of liver donations demands the use of suboptimal grafts with steatosis being a frequent finding. Although ≤30% macrovesicular steatosis is considered to be safe the risk for primary non-function (PNF) and outcome after re-transplantation (re-OLT) is unknown. METHODS: Among 1205 orthotropic liver transplantations performed at our institution the frequency, survival and reason of re-OLT was evaluated. PNF (group A) cases and those with initial transplant function but subsequent need for re-OLT (group B) were analyzed...
March 7, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28261903/testing-of-microencapsulated-porcine-hepatocytes-in-a-new-model-of-fulminant-liver-failure-in-baboons
#7
Zurab Machaidze, Heidi Yeh, Lingling Wei, Christian Schuetz, Michele Carvello, Antonino Sgroi, Rex N Smith, Henk-Jan Schuurman, David H Sachs, Philippe Morel, James F Markmann, Léo H Bühler
BACKGROUND: There is no standard therapy for acute liver failure. Hepatocyte transplantation has been proposed for temporary liver function support, while the injured liver regenerates or while waiting for transplantation. We have previously shown such efficacy for microencapsulated porcine hepatocytes in mice with fulminant liver failure. We aimed to establish a large animal model for fulminant liver failure to assess the efficacy of microencapsulated porcine hepatocytes in temporary liver function support...
March 5, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28260484/impact-of-a-full-time-donor-management-protocol-on-donors-liver-biopsy-findings-progress-to-date
#8
Meysam Mojtabaee, Alireza Shamsaeefar, Siavash Gholami, Mojtaba Mohsenzadeh, Farahnaz Sadegh Beigee
OBJECTIVES: This study investigated a fixed coordinator-directed donor management strategy's impact on donated liver quality, as determined by definitive biopsy results. MATERIALS AND METHODS: We collected donated liver biopsy results from donations both before and after implementing a fixed coordinator-directed donor management strategy. This strategy involved full-time attendance by a donor coordinator and continued resuscitation of brain-dead donors. All donations took place in a single organ procurement unit...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28253211/nonalcoholic-steatohepatitis-recurrence-and-rate-of-fibrosis-progression-following-liver-transplantation
#9
Achuthan Sourianarayanane, Sowminya Arikapudi, Arthur J McCullough, Abhinav Humar
BACKGROUND: Nonalcoholic steatohepatitis (NASH) is known to recur following liver transplantation (LT). Metabolic risk factors increase with immunosuppression. However, the rate of fibrosis progression following LT for NASH while on immunosuppression is less clear. AIM: The incidences of steatosis, NASH, and fibrosis following LT for NASH were quantified and compared with those transplanted for alcoholic liver disease (ALD). PATIENTS AND METHODS: Records of all NASH patients and 1 : 2 match with ALD transplant recipients between 2001 and 2006 were reviewed retrospectively...
April 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28246131/the-effect-of-cortisol-in-rat-steatotic-and-non-steatoticliver-transplantation-from-brain-dead-donors
#10
Mónica Bibiana Jiménez-Castro, Elsa Negrete-Sánchez, Araní Casillas-Ramírez, Jose Gulfo, Ana I Álvarez-Mercado, Maria Eugenia Cornide-Petronio, Jordi Gracia-Sancho, Juan Rodés, Carmen Peralta
In this study, we examined the effects of cortisol on steatotic and non-steatotic liver grafts from brain-dead donors and characterized the underlying mechanisms involved. Non-steatotic liver grafts showed reduced cortisol and increased cortisone levels in association with upregulation of enzymes that inactivate cortisol. Conversely, steatotic liver grafts exhibited increased cortisol and reduced cortisone levels. The enzymes involved in cortisol generation were overexpressed, and those involved in cortisol inactivation or clearance were downregulated in steatotic liver grafts...
February 28, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28223722/to-screen-or-not-to-screen-celiac-antibodies-in-liver-diseases
#11
REVIEW
Janaína Luz Narciso-Schiavon, Leonardo Lucca Schiavon
Celiac disease (CD) is a systemic immune-mediated disorder triggered by dietary gluten in genetically predisposed individuals. The typical symptoms are anemia, diarrhea, fatigue, weight loss, and abdominal pain. CD has been reported in patients with primary sclerosing cholangitis, primary biliary cholangitis, autoimmune hepatitis, aminotransferase elevations, nonalcoholic fatty liver disease, hepatitis B, hepatitis C, portal hypertension and liver cirrhosis. We evaluate recommendations for active screening for CD in patients with liver diseases, and the effect of a gluten-free diet in these different settings...
February 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28223721/current-and-future-therapies-for-inherited-cholestatic-liver-diseases
#12
REVIEW
Wendy L van der Woerd, Roderick Hj Houwen, Stan Fj van de Graaf
Familial intrahepatic cholestasis (FIC) comprises a group of rare cholestatic liver diseases associated with canalicular transport defects resulting predominantly from mutations in ATP8B1, ABCB11 and ABCB4. Phenotypes range from benign recurrent intrahepatic cholestasis (BRIC), associated with recurrent cholestatic attacks, to progressive FIC (PFIC). Patients often suffer from severe pruritus and eventually progressive cholestasis results in liver failure. Currently, first-line treatment includes ursodeoxycholic acid in patients with ABCB4 deficiency (PFIC3) and partial biliary diversion in patients with ATP8B1 or ABCB11 deficiency (PFIC1 and PFIC2)...
February 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28129776/administration-of-multipotent-mesenchymal-stromal-cells-restores-liver-regeneration-and-improves-liver-function-in-obese-mice-with-hepatic-steatosis-after-partial-hepatectomy
#13
Fernando Ezquer, Javiera Bahamonde, Ya-Lin Huang, Marcelo Ezquer
BACKGROUND: The liver has the remarkable capacity to regenerate in order to compensate for lost or damaged hepatic tissue. However, pre-existing pathological abnormalities, such as hepatic steatosis (HS), inhibits the endogenous regenerative process, becoming an obstacle for liver surgery and living donor transplantation. Recent evidence indicates that multipotent mesenchymal stromal cells (MSCs) administration can improve hepatic function and increase the potential for liver regeneration in patients with liver damage...
January 28, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28123443/liver-illness-and-psychiatric-patients
#14
REVIEW
Paul Carrier, Marilyne Debette-Gratien, Murielle Girard, Jérémie Jacques, Philippe Nubukpo, Véronique Loustaud-Ratti
Patients with psychiatric disorders are usually more exposed to multiple somatic illnesses, including liver diseases. Specific links are established between psychiatric disorders and alcohol hepatitis, hepatitis B, and hepatitis C in the population as a whole, and specifically in drug abusers. Metabolic syndrome criteria, and associated steatosis or non-alcoholic steato-hepatitis (NASH) are frequent in patients with chronic psychiatric disorders under psychotropic drugs, and should be screened. Some psychiatric medications, such as neuroleptics, mood stabilizers, and a few antidepressants, are often associated with drug-induced liver injury (DILI)...
December 2016: Hepatitis Monthly
https://www.readbyqxmd.com/read/28112071/early-life-programming-and-the-risk-of-non-alcoholic-fatty-liver-disease
#15
C Lynch, C S Chan, A J Drake
Non-alcoholic fatty liver disease (NAFLD) is associated with obesity, insulin resistance, type 2 diabetes and cardiovascular disease and can be considered the hepatic manifestation of the metabolic syndrome. NAFLD represents a spectrum of disease, from the relatively benign simple steatosis to the more serious non-alcoholic steatohepatitis, which can progress to liver cirrhosis, hepatocellular carcinoma and end-stage liver failure, necessitating liver transplantation. Although the increasing prevalence of NAFLD in developed countries has substantial implications for public health, many of the precise mechanisms accounting for the development and progression of NAFLD are unclear...
January 23, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28105255/pi3k-ship2-pten-pathway-in-cell-polarity-and-hepatitis-c-virus-pathogenesis
#16
REVIEW
Aline Awad, Ama Gassama-Diagne
Hepatitis C virus (HCV) infects hepatocytes, polarized cells in the liver. Chronic HCV infection often leads to steatosis, fibrosis, cirrhosis and hepatocellular carcinoma, and it has been identified as the leading cause of liver transplantation worldwide. The HCV replication cycle is dependent on lipid metabolism and particularly an accumulation of lipid droplets in host cells. Phosphoinositides (PIs) are minor phospholipids enriched in different membranes and their levels are tightly regulated by specific PI kinases and phosphatases...
January 8, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28073175/postreperfusion-microcirculatory-derangements-after-liver-transplantation-relationship-to-hemodynamics-serum-mediators-and-outcome
#17
Carlo Pulitano, David Joseph, Charbel Sandroussi, Deborah Verran, Phong Ho, Ashe Debiasio, Adriano Luongo, Geoffrey W McCaughan, Nicholas A Shackel, Michael Crawford
Despite the growing data supporting the role of microcirculation in regulating liver function, little of this knowledge has been translated into clinical practice. The aim of this study is to quantify hepatic microcirculation in vivo using sidestream dark field (SDF) imaging and correlate these findings with hepatic blood flow, hemodynamic parameters, and soluble mediators. Postreperfusion hepatic microcirculation was assessed using SDF imaging. Hepatic microcirculation measurements included functional sinusoidal density (cm/cm(2) ), sinusoidal diameter (μm), red blood cell velocity (μm/second), volumetric blood flow (pl/second), and flow heterogeneity (FH) index...
April 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28059835/donor-liver-small-droplet-macrovesicular-steatosis-is-associated-with-increased-risk-for-recipient-allograft-rejection
#18
Won-Tak Choi, Kuang-Yu Jen, Dongliang Wang, Mehdi Tavakol, John P Roberts, Ryan M Gill
Although donor livers with <30% large droplet macrovesicular steatosis (MaS) and/or small droplet MaS (irrespective of percentage) are considered safe to use, this consensus is based on variable definitions of MaS subtypes and/or without a reproducible scoring system. We analyzed 134 donor liver biopsies from allografts transplanted at University of California at San Francisco between 2000 and 2015 to determine whether large and/or small droplet MaS is a risk factor for poor outcomes. Large droplet MaS was defined as a fat droplet occupying greater than one half of an individual hepatocyte, with nuclear displacement, and scored as the percentage of total parenchymal area replaced by large fat droplets on ×40 magnification...
March 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28058221/quality-of-life-10-years-after-liver-transplantation-the-impact-of-graft-histology
#19
Vincent Karam, Mylène Sebagh, Kinan Rifai, Funda Yilmaz, Prashant Bhangui, Colette Danet, Faouzi Saliba, Didier Samuel, Denis Castaing, René Adam, Cyrille Feray
AIM: To evaluate the relationship between the state of transplanted liver graft and the recipient quality of life (QOL) of histologically proven lesions in a 10-year post liver transplantation (LT) cohort of patients. METHODS: Seventy-two recipients with a functional first graft at 10 years post-LT underwent liver biopsy and completed a QOL questionnaire. Logistic regression analysis was used to explore associations between histological, clinical and QOL criteria...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28052626/therapies-in-non-alcoholic-steatohepatitis-nash
#20
REVIEW
Abdul M Oseini, Arun J Sanyal
The hallmark of non-alcoholic fatty liver disease (NAFLD) is excessive fatty accumulation in the hepatocytes, which may be an isolated event (non-alcoholic fatty liver, NAFL) or accompanied by evidence of inflammation and cell injury with or without fibrosis (non-alcoholic steatohepatitis, NASH). NASH, the more aggressive form of NAFLD, may progress to cirrhosis and hepatocellular carcinoma. Since NASH is estimated to overtake hepatitis C virus infection as the leading cause of liver transplantation in the US in the coming decade, and there are no current FDA-approved therapies for this disease, the need to find appropriate therapeutic targets is now more urgent than ever before...
January 2017: Liver International: Official Journal of the International Association for the Study of the Liver
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