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NAFLD and MR

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https://www.readbyqxmd.com/read/29339098/vitamin-d-and-nonalcoholic-fatty-liver-disease-bi-directional-mendelian-randomization-analysis
#1
Ningjian Wang, Chi Chen, Li Zhao, Yi Chen, Bing Han, Fangzhen Xia, Jing Cheng, Qin Li, Yingli Lu
BACKGROUND: Vitamin D deficiency is associated with nonalcoholic fatty liver disease (NAFLD) in many cross-sectional studies. However, the causality between them has not been established. We used bi-directional mendelian randomization (MR) analysis to explore the causal relationship between 25-hydroxyvitamin D [25(OH)D] and NAFLD. METHODS: 9182 participants were included from a survey in East China from 2014 to 2016. We calculated weighted genetic risk scores (GRS) for 25(OH)D concentration and NAFLD based on 25(OH)D-related and NAFLD-related single nucleotide polymorphisms...
January 9, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29279175/mr-elastography-is-effective-for-the-non-invasive-evaluation-of-fibrosis-and-necroinflammatory-activity-in-patients-with-nonalcoholic-fatty-liver-disease
#2
Luciana Costa-Silva, Silvia Marinho Ferolla, Agnaldo Soares Lima, Paula Vieira Teixeira Vidigal, Teresa Cristina de Abreu Ferrari
OBJECTIVES: To evaluate the performance of magnetic resonance elastography (MRE) in diagnosing and staging hepatic fibrosis in patients with histologically confirmed nonalcoholic fatty liver disease (NAFLD) and in distinguishing simple steatosis from nonalcoholic steatohepatitis (NASH). METHODS: Ninety subjects (49 NAFLD patients and 41 healthy volunteers) were prospectively enrolled. Liver stiffness measured by MRE was correlated with the grade of fibrosis and/or inflammation determined by liver biopsy...
January 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29278765/gd-eob-dtpa-enhanced-t1%C3%AF-imaging-vs-diffusion-metrics-for-assessment-liver-inflammation-and-early-stage-fibrosis-of-nonalcoholic-steatohepatitis-in-rabbits
#3
Yuanliang Xie, Hongfeng Zhang, Chaoling Jin, Xiang Wang, Xiaoqi Wang, Jingting Chen, Yikai Xu
To assess the value of T1ρ,T1ρ on hepatobiliary phase (HBP) and diffusion metrics in staging of Non-alcoholic fatty liver disease (NAFLD) activity scores, inflammation, fibrosis in NASH rabbits model. Non-alcoholic steatohepatitis (NASH) rabbits model was induced by feeding a varied duration of high-fat, high-cholesterol diet. T1ρ,T1ρ (HBP) 20min after administration of Gd-EOB-DTPA, and Intravoxel incoherent motion imaging (IVIM) diffusion-weighted imaging were performed on a 3.0T magnetic resonance (MR) imaging unit...
December 23, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29260576/quantification-of-pancreatic-fat-with-dual-echo-imaging-at-3-0-t-mr-in-clinical-application-how-do-the-corrections-for-t1-and-t2-relaxation-effect-work-and-simplified-correction-strategy
#4
Fang Yuan, Bin Song, Zixing Huang, Chunchao Xia, Xijiao Liu
Background Dual-echo imaging is a routine clinical magnetic resonance (MR) sequence affected by T1 and T2* relaxation effect in fat quantification. The separate impacts of T1 and T2* relaxation effect in pancreatic fat quantification using dual-echo imaging at 3.0-T MR have not been reported in detail. Purpose To demonstrate the separate T1 and T2* relaxation effect on pancreatic fat quantification by dual-echo imaging at 3.0-T MR and the simplified correction strategy is discussed for convenient clinical application...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/29222917/diagnostic-modalities-for-non-alcoholic-fatty-liver-disease-nafld-non-alcoholic-steatohepatitis-nash-and-associated-fibrosis
#5
REVIEW
Zobair M Younossi, Rohit Loomba, Quentin M Anstee, Mary E Rinella, Elisabetta Bugianesi, Giulio Marchesini, Brent A Neuschwander-Tetri, Lawrence Serfaty, Francesco Negro, Stephen H Caldwell, Vlad Ratziu, Kathleen E Corey, Scott L Friedman, Manal F Abdelmalek, Stephen A Harrison, Arun J Sanyal, Joel E Lavine, Philippe Mathurin, Michael R Charlton, Zachary D Goodman, Naga P Chalasani, Kris V Kowdley, Jacob George, Keith Lindor
NAFLD is a spectrum comprised of isolated steatosis, NASH, advanced fibrosis, and cirrhosis. The majority of NAFLD subjects do not have NASH and don't carry a significant risk for adverse outcomes (cirrhosis and mortality). Globally, the prevalence of NAFLD is approximately 25%. In Asia, a gradient of high prevalence rates to low rates are noted from urban to rural areas. Given the prevalence of NAFLD, the clinical and economic burden of NAFLD and NASH can be substantial. With increasing recognition as an important liver disease, the diagnosis of NASH still requires a liver biopsy which is suboptimal...
December 9, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29177681/clinical-strategy-of-diagnosing-and-following-patients-with-nonalcoholic-fatty-liver-disease-based-on-invasive-and-noninvasive-methods
#6
REVIEW
Masato Yoneda, Kento Imajo, Hirokazu Takahashi, Yuji Ogawa, Yuichiro Eguchi, Yoshio Sumida, Masashi Yoneda, Miwa Kawanaka, Satoru Saito, Katsutoshi Tokushige, Atsushi Nakajima
Nonalcoholic fatty liver disease (NAFLD) is an important cause of chronic liver injury in many countries. The incidence of NAFLD is rising rapidly in both adults and children, because of the currently ongoing epidemics of obesity and type 2 diabetes. Notably, histological liver fibrosis is recognized as the main predictive factor for the overall long-term outcome of NAFLD, including cardiovascular disease and liver-related mortality. Thus, staging of liver fibrosis is essential in determining the prognosis and optimal treatment for patients with NAFLD and in guiding surveillance for the development of hepatocellular carcinoma (HCC)...
November 24, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/29128063/radiologic-imaging-in-nonalcoholic-fatty-liver-disease-and-nonalcoholic-steatohepatitis
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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