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NAFLD and MR

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https://www.readbyqxmd.com/read/29128063/radiologic-imaging-in-nonalcoholic-fatty-liver-disease-and-nonalcoholic-steatohepatitis
#1
REVIEW
Yonah B Esterson, Gregory M Grimaldi
The article reviews the multimodality (ultrasound, computed tomography, and magnetic resonance [MR]) imaging appearance of nonalcoholic fatty liver disease (NAFLD) and discusses the radiologic diagnostic criteria as well as the sensitivity and specificity of these imaging methods. The authors review the role of both ultrasound and MR elastography for the diagnosis of fibrosis and for the longitudinal evaluation of patients following therapeutic intervention. Lastly, the authors briefly discuss the screening and diagnosis of hepatocellular carcinoma in patients with NAFLD, as there are special considerations in this population...
February 2018: Clinics in Liver Disease
https://www.readbyqxmd.com/read/29058029/increased-severity-of-liver-fat-content-and-liver-fibrosis-in-non-alcoholic-fatty-liver-disease-correlate-with-epicardial-fat-volume-in-type-2-diabetes-a-prospective-study
#2
Sharon S Brouha, Phirum Nguyen, Ricki Bettencourt, Claude B Sirlin, Rohit Loomba
OBJECTIVES: To determine whether severity of non-alcoholic fatty liver disease (NAFLD) and liver fibrosis quantitatively assessed in individuals with diabetes mellitus (DM)-2 correlate with increased coronary heart disease (CHD) risk using non-invasive markers. METHODS: We conducted a single-centre, prospective, cross-sectional study in 100 consecutive diabetic individuals without known CHD recruited between March 2013 and September 2014. History, physical examination, serum markers, cardiac computed tomography (CT), magnetic resonance (MR) imaging-estimated proton density fat fraction (PDFF) and MR elastography (MRE) were obtained for 95 participants...
October 20, 2017: European Radiology
https://www.readbyqxmd.com/read/28915103/mr-spectroscopy-derived-proton-density-fat-fraction-is-superior-to-controlled-attenuation-parameter-for-detecting-and-grading-hepatic-steatosis
#3
Jurgen Henk Runge, Loek Pieter Smits, Joanne Verheij, Annekatrien Depla, Sjoerd Douwe Kuiken, Bert Cornelis Baak, Aart Johannes Nederveen, Ulrich Beuers, Jaap Stoker
Purpose To prospectively compare the diagnostic accuracy of controlled attenuation parameter (CAP) obtained with transient elastography and proton density fat fraction (PDFF) obtained with proton magnetic resonance (MR) spectroscopy with results of liver biopsy in a cohort of adult patients suspected of having nonalcoholic fatty liver disease (NAFLD). Materials and Methods The institutional review board approved this study. Informed consent was obtained from all patients. The authors evaluated 55 patients suspected of having NAFLD (40 men, 15 women)...
September 15, 2017: Radiology
https://www.readbyqxmd.com/read/28914407/association-of-fetuin-b-with-markers-of-liver-fibrosis-in-nonalcoholic-fatty-liver-disease
#4
Thomas Ebert, Nicolas Linder, Alexander Schaudinn, Harald Busse, Joachim Berger, Ralf Lichtinghagen, Volker Keim, Johannes Wiegand, Thomas Karlas
OBJECTIVE: The liver-derived plasma protein fetuin B is associated with nonalcoholic fatty liver disease (NAFLD) and impaired glucose homeostasis in mice. However, its association with non-invasive ultrasound- and magnetic resonance (MR)-based markers of liver fibrosis and steatosis, the enhanced liver fibrosis (ELF) score, liver biopsy, as well as rs738409 in PNPLA3, has not been elucidated in NAFLD, so far. DESIGN AND METHODS: The association of circulating fetuin B and transient elastography (TE), controlled attenuation parameter (CAP), (1)H-MR-spectroscopy, the ELF score, liver biopsy, as well as risk alleles in rs738409 in PNPLA3, was studied in 101 NAFLD patients as compared to 15 healthy controls...
November 2017: Endocrine
https://www.readbyqxmd.com/read/28752925/management-of-portal-hypertension-before-and-after-liver-transplantation
#5
L W Unger, G Berlakovich, M Trauner, T Reiberger
Orthotopic liver transplantation (OLT) represents a curative treatment option for end-stage liver disease (ESLD). While epidemiology of ESLD has recently changed due the rising prevalence of non-alcoholic fatty liver disease (NAFLD) and decreased burden of hepatitis C virus (HCV) infections due to highly-effective antiviral regimens, the management of portal hypertension (PHT) remains a clinical challenge in the pre- and post-OLT setting. The measurement of hepatic venous pressure gradient (HVPG) represents the most reliable, but invasive tool for assessment of the severity of PHT...
July 28, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28688543/liver-steatosis-the-new-epidemic-of-the-third-millennium-benign-liver-state-or-silent-killer
#6
REVIEW
Claudio Puoti, Maria Giuseppa Elmo, Daniela Ceccarelli, Michela Ditrinco
Until the end of the 90's of the last century, rather little attention was paid to the issue of the non-alcoholic fatty liver disease (NAFLD), perhaps due to the fact that the newly discovered hepatitis C virus did attract a paramount interest of hepatologists and researchers. On the other side, fatty liver was considered a relatively uncommon cause of liver damage, occurring almost exclusively in obese females, often associated with non-insulin dependent diabetes mellitus (NIDDM), and with a relatively benign prognosis...
July 5, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28679028/hepatic-iron-is-the-major-determinant-of-serum-ferritin-in-nafld-patients
#7
John D Ryan, Andrew E Armitage, Jeremy F Cobbold, Rajarshi Banerjee, Oscar Borsani, Paola Dongiovanni, Stefan Neubauer, Reza Morovat, Lai Mun Wang, Sant-Rayn Pasricha, Silvia Fargion, Jane Collier, Eleanor Barnes, Hal Drakesmith, Luca Valenti, Michael Pavlides
BACKGROUND AND AIMS: Elevated serum ferritin is common in NAFLD, and is associated with more advanced disease and increased mortality. Hyperferritinemia in NAFLD is often attributed to inflammation, while in other conditions ferritin closely reflects body iron stores. The aim of this study was to clarify the underlying cause of hyperferritinemia in NAFLD. METHODS: Ferritin levels were examined with markers of iron status, inflammation and liver injury across the clinical spectrum of NAFLD using blood, tissue and magnetic resonance (MR) imaging...
July 5, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28536464/the-protective-effect-of-human-renal-sinus-fat-on-glomerular-cells-is-reversed-by-the-hepatokine-fetuin-a
#8
R Wagner, J Machann, M Guthoff, P P Nawroth, S Nadalin, M A Saleem, N Heyne, A Königsrainer, F Fend, F Schick, A Fritsche, N Stefan, H-U Häring, E Schleicher, D I Siegel-Axel
Renal sinus fat (RSF) is a perivascular fat compartment located around renal arteries. In this in vitro and in vivo study we hypothesized that the hepatokine fetuin-A may impair renal function in non alcoholic fatty liver disease (NAFLD) by altering inflammatory signalling in RSF. To study effects of the crosstalk between fetuin-A, RSF and kidney, human renal sinus fat cells (RSFC) were isolated and cocultured with human endothelial cells (EC) or podocytes (PO). RSFC caused downregulation of proinflammatory and upregulation of regenerative factors in cocultured EC and PO, indicating a protective influence of RFSC...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28493388/magnetic-resonance-elastography-measured-shear-stiffness-as-a-biomarker-of-fibrosis-in-pediatric-nonalcoholic-fatty-liver-disease
#9
MULTICENTER STUDY
Jeffrey B Schwimmer, Cynthia Behling, Jorge Eduardo Angeles, Melissa Paiz, Janis Durelle, Jonathan Africa, Kimberly P Newton, Elizabeth M Brunt, Joel E Lavine, Stephanie H Abrams, Prakash Masand, Rajesh Krishnamurthy, Kelvin Wong, Richard L Ehman, Meng Yin, Kevin J Glaser, Bogdan Dzyubak, Tanya Wolfson, Anthony C Gamst, Jonathan Hooker, William Haufe, Alexandra Schlein, Gavin Hamilton, Michael S Middleton, Claude B Sirlin
Magnetic resonance elastography (MRE) is a promising technique for noninvasive assessment of fibrosis, a major determinant of outcome in nonalcoholic fatty liver disease (NAFLD). However, data in children are limited. The purpose of this study was to determine the accuracy of MRE for the detection of fibrosis and advanced fibrosis in children with NAFLD and to assess agreement between manual and novel automated reading methods. We performed a prospective, multicenter study of two-dimensional (2D) MRE in children with NAFLD...
November 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28445310/diagnostic-accuracy-of-serum-alanine-aminotransferase-as-biomarker-for-nonalcoholic-fatty-liver-disease-and-insulin-resistance-in-healthy-subjects-using-3t-mr-spectroscopy
#10
Jose Luis Martin-Rodriguez, Jorge Gonzalez-Cantero, Alvaro Gonzalez-Cantero, Juan Pedro Arrebola, Jorge Luis Gonzalez-Calvin
Recognition of the close relationship of nonalcoholic fatty liver disease (NAFLD) with diabetes mellitus 2, obesity, metabolic syndrome, and cardiovascular disease has stimulated growing interest in NAFLD as a public health problem. Serum alanine aminotransferase (ALT) has been proposed as a marker of NAFLD, but levels are within the range currently considered "normal" in a large proportion of NAFLD subjects.The aim of the study was to determine the diagnostic accuracy of serum ALT for identifying individuals with NAFLD, using 3-Tesla (T) magnetic resonance spectroscopy (H-MRS)...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28425401/mre-in-nafld-promising-but-further-validation-is-required
#11
John D Ryan, Emmanuel A Tsochatzis
MR elastography is a novel method for non-invasive fibrosis assessment, not yet sufficiently validated. In a recent study in 104 patients Park, Gastroenterology 2017; 152: 598-602), MRE was compared to transient elastography for the diagnosis of fibrosis is nonalcoholic fatty liver disease. The current viewpoint critically appraises this study.
May 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28358240/molecular-mr-imaging-of-myeloperoxidase-distinguishes-steatosis-from-steatohepatitis-in-nonalcoholic-fatty-liver-disease
#12
Benjamin Pulli, Gregory Wojtkiewicz, Yoshiko Iwamoto, Muhammad Ali, Matthias W Zeller, Lionel Bure, Cuihua Wang, Yuri Choi, Ricard Masia, Alex R Guimaraes, Kathleen E Corey, John W Chen
Purpose To test whether MPO-Gd, an activatable molecular magnetic resonance (MR) imaging agent specific for myeloperoxidase (MPO) activity, could detect MPO activity in nonalcoholic steatohepatitis (NASH) mouse models and human liver biopsy samples. Materials and Methods In this study, 20 leptin receptor-deficient and three MPO knockout mice were injected with endotoxin (lipopolysaccharide) or fed a methionine and choline-deficient (MCD) diet to induce experimental NASH and underwent MR imaging with MPO-Gd...
August 2017: Radiology
https://www.readbyqxmd.com/read/28325853/deletion-of-macrophage-mineralocorticoid-receptor-protects-hepatic-steatosis-and-insulin-resistance-through-er%C3%AE-hgf-met-pathway
#13
Yu-Yao Zhang, Chao Li, Gao-Feng Yao, Lin-Juan Du, Yuan Liu, Xiao-Jun Zheng, Shuai Yan, Jian-Yong Sun, Yan Liu, Ming-Zhu Liu, Xiaoran Zhang, Gang Wei, Wenxin Tong, Xiaobei Chen, Yong Wu, Shuyang Sun, Suling Liu, Qiurong Ding, Ying Yu, Huiyong Yin, Sheng-Zhong Duan
Although the importance of macrophages in nonalcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (T2DM) has been recognized, how macrophages affect hepatocytes remains elusive. Mineralocorticoid receptor (MR) has been implicated to play important roles in NAFLD and T2DM. However, cellular and molecular mechanisms are largely unknown. We report that myeloid MR knockout (MRKO) improves glucose intolerance, insulin resistance, and hepatic steatosis in obese mice. Estrogen signaling is sufficient and necessary for such improvements...
June 2017: Diabetes
https://www.readbyqxmd.com/read/28277807/magnetic-resonance-imaging-and-transient-elastography-in-the-management-of-nonalcoholic-fatty-liver-disease-nafld
#14
REVIEW
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/28225569/hepatic-alanine-differentiates-nonalcoholic-steatohepatitis-from-simple-steatosis-in-humans-and-mice-a-proton-mr-spectroscopy-study-with-long-echo-time
#15
Tae-Hoon Kim, Hong Young Jun, Ki-Jong Kim, Young Hwan Lee, Myeung Su Lee, Keum Ha Choi, Ki Jung Yun, Yong Yeon Jeong, Chung Hwan Jun, Eun Young Cho, Kwon-Ha Yoon
PURPOSE: To evaluate the hepatic metabolic alterations in nonalcoholic fatty liver disease (NAFLD) by using (1) H-MRS (proton magnetic resonance spectroscopy) with long echo time and to test the reproducibility of human study in an animal model. Liver biopsy is the gold standard for diagnosing NAFLD but with practical constraints. (1) H-MRS allows in vivo assessment of hepatocellular metabolism and has shown potential for biochemical differentiation in diffuse liver disease. MATERIALS AND METHODS: In all, 32 subjects (11 patients with nonalcoholic steatohepatitis [NASH], 15 with simple steatosis [SS], and six healthy controls) were studied...
November 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28199729/spectrum-of-disease-associated-with-partial-lipodystrophy-lessons-from-a-trial-cohort
#16
Nevin Ajluni, Rasimcan Meral, Adam H Neidert, Graham F Brady, Eric Buras, Barbara McKenna, Frank DiPaola, Thomas L Chenevert, Jeffrey F Horowitz, Colleen Buggs-Saxton, Amit R Rupani, Peedikayil E Thomas, Marwan K Tayeh, Jeffrey W Innis, M Bishr Omary, Hari Conjeevaram, Elif A Oral
CONTEXT: Partial lipodystrophy (PL) is associated with metabolic co-morbidities but may go undiagnosed as the disease spectrum is not fully described. OBJECTIVE: The objective of the study was to define disease spectrum in PL using genetic, clinical (historical, morphometric) and laboratory characteristics. DESIGN: Cross-sectional evaluation. PARTICIPANTS: Twenty-three patients (22 with familial, one acquired, 78·3% female, aged 12-64 years) with PL and non-alcoholic fatty liver disease (NAFLD)...
May 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28169509/nonalcoholic-fatty-liver-disease-and-measures-of-early-brain-health-in-middle-aged-adults-the-cardia-study
#17
Lisa B VanWagner, James G Terry, Lisa S Chow, Amy C Alman, Hakmook Kang, Katherine H Ingram, Christina Shay, Cora E Lewis, R Nick Bryan, Lenore J Launer, J Jeffrey Carr
OBJECTIVE: To assess associations between nonalcoholic fatty liver disease (NAFLD) and measures of brain health in a population-based sample of adults. METHODS: Participants from the CARDIA study (Y25 exam; age 43-55 years) with concurrent computed tomography quantification of liver fat, visceral adipose tissue (VAT), and brain magnetic resonance (MR) images were included (n = 505). NAFLD was identified after exclusion of other causes of liver fat. Total tissue volume (TTV) and gray matter cerebral blood flow (GM-CBF) were estimated using 3T brain MR images...
March 2017: Obesity
https://www.readbyqxmd.com/read/28064372/effects-of-bariatric-surgery-on-non-alcoholic-fatty-liver-disease-magnetic-resonance-imaging-is-an-effective-non-invasive-method-to-evaluate-changes-in-the-liver-fat-fraction
#18
Dennis M Hedderich, Till Hasenberg, Stefan Haneder, Stefan O Schoenberg, Özlem Kücükoglu, Ali Canbay, Mirko Otto
INTRODUCTION: Non-alcoholic fatty liver disease (NAFLD) is considered the most common liver disease worldwide and is highly associated with obesity. The prevalences of both conditions have markedly increased in the Western civilization. Bariatric surgery is the most effective treatment for morbid obesity and its comorbidities such as NAFLD. OBJECTIVES: Measure postoperative liver fat fraction (LFF) in bariatric patients by using in-opposed-phase MRI, a widely available clinical tool validated for the quantification of liver fat METHODS: Retrospective analyses of participants, who underwent laparoscopic Roux-Y-gastric-bypass (17) or laparoscopic sleeve gastrectomy (2) were performed using magnetic resonance imaging (MRI), bioelectrical impedance analysis (BIA), and anthropometric measurements 1 day before surgery, as well as 6, 12, and 24 weeks after surgery, LFF was calculated from fat-only and water-only MR images...
July 2017: Obesity Surgery
https://www.readbyqxmd.com/read/27986169/hepatic-steatosis-etiology-patterns-and-quantification
#19
REVIEW
Ilkay S Idilman, Ilknur Ozdeniz, Musturay Karcaaltincaba
Hepatic steatosis can occur because of nonalcoholic fatty liver disease (NAFLD), alcoholism, chemotherapy, and metabolic, toxic, and infectious causes. Pediatric hepatic steatosis is also becoming more frequent and can have distinctive features. The most common pattern is diffuse form; however, it can present in heterogenous, focal, multinodular, perilesional, perivascular, subcapsular, and lobar forms. Focal steatosis and fat sparing can occur because of the presence of veins of Sappey, pancreaticoduodenal vein, and aberrant right and left gastric veins, which drain into the liver as third inflow...
December 2016: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/27937040/multiparametric-or-practical-quantitative-liver-mri-towards-millisecond-fat-fraction-kilopascal-and-function-era
#20
REVIEW
Emre Unal, Ilkay Sedakat Idilman, Muşturay Karçaaltıncaba
New advances in liver magnetic resonance imaging (MRI) may enable diagnosis of unseen pathologies by conventional techniques. Normal T1 (550-620 ms for 1.5 T and 700-850 ms for 3 T), T2, T2* (>20 ms), T1rho (40-50 ms) mapping, proton density fat fraction (PDFF) (≤5%) and stiffness (2-3kPa) values can enable differentiation of a normal liver from chronic liver and diffuse diseases. Gd-EOB-DTPA can enable assessment of liver function by using postcontrast hepatobiliary phase or T1 reduction rate (normally above 60%)...
February 2017: Expert Review of Gastroenterology & Hepatology
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