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Hepatic iron

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https://www.readbyqxmd.com/read/28534724/maternal-protein-restriction-depresses-the-duodenal-expression-of-iron-transporters-and-serum-iron-level-in-male-weaning-piglets
#1
Wenqiang Ma, Jingyu Lu, Shuxia Jiang, Demin Cai, Shifeng Pan, Yimin Jia, Ruqian Zhao
To investigate the effects of maternal dietary protein restriction on offspring Fe metabolism, twenty-four second-parity Landrace×Yorkshire sows were randomly allocated to standard-protein (SP) and low-protein (LP) groups. The SP sows were fed diets containing 15 and 18 % crude protein throughout pregnancy and lactation, respectively, whereas the LP sows were subjected to 50 % dietary protein restriction. Offspring birth weight was not affected, but the body weight at weaning (P=0·06) and average daily gain (P=0·01) of the female piglets were significantly decreased...
April 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28532285/utility-of-transient-elastography-in-estimating-hepatic-iron-concentration-in-comparison-to-magnetic-resonance-imaging-in-patients-who-are-transfusion-dependent-a-canadian-center-experience
#2
George Ou, Hin Hin Ko, Pari Tiwari, Navdeep Sandhu, Cherry Galorport, Terry Lee, Hatoon Ezzat
Transfusion-dependent hereditary anemias such as β-thalassemia (β-thal), predispose patients to iron overload and its numerous clinical sequelae. Accurate assessment of overall iron status and prompt initiation of chelation therapy to prevent irreversible end-organ damage can be achieved using magnetic resonance imaging (MRI) to measure liver iron concentration (LIC) as a surrogate marker of total body iron; however, its access may be associated with long wait times and delay in treatment. We report an observational cohort study at a single tertiary care center assessing the theoretical role of transient elastography (TE), which measures liver stiffness, in estimating LIC compared to other established diagnostic measures...
January 2017: Hemoglobin
https://www.readbyqxmd.com/read/28521822/central-nervous-system-manganese-induced-lesions-and-clinical-consequences-in-patients-with-hereditary-hemorrhagic-telangiectasia
#3
M M Serra, C H Besada, A Cabana Cal, A Saenz, C V Stefani, D Bauso, A B Golimstok, J C Bandi, D H Giunta, C M Elizondo
BACKGROUND: Around 47-74% of patients with hereditary hemorrhagic telangiectasia (HHT) have hepatic vascular malformations (HVMs); magnetic resonance images (MRI) of the central nervous system (CNS) might show in T1 sequences a hyper-intensity signal in different areas, mainly in the basal ganglia (BG) as consequence of manganese (Mn) deposits as observed in cirrhotic patients. These patients might suffer from different neuropsychiatric disorders (hepatic encephalopathy). In HHT patients, even in the presence of hepatic shunts, hepatocellular function is usually preserved...
May 18, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28512555/assessment-of-obesity-and-hepatic-late-adverse-effects-in-the-egyptian-survivors-of-pediatric-acute-lymphoblastic-leukemia-a-single-center-study
#4
Farida H El-Rashedy, Mahmoud A El-Hawy, Sally M El Hefnawy, Mona M Mohammed
BACKGROUND: Childhood acute lymphoblastic leukemia (ALL) with current cure rates reaching 80% emphasizes the necessity to determine treatment-related long-term effects. The aim of this study is to estimate the prevalence of overweight, obesity, and hepatic late adverse effects in a cohort of ALL survivors treated at the Hematology and Oncology Unit, Pediatrics Department, Menoufia University, Egypt. METHODS: In this case-control study, height, weight, and body mass index (BMI) were assessed for 35 pediatric ALL survivors and 35 healthy children...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28504544/radial-ultrashort-te-imaging-removes-the-need-for-breath-holding-in-hepatic-iron-overload-quantification-by-r2-mri
#5
Aaryani Tipirneni-Sajja, Axel J Krafft, M Beth McCarville, Ralf B Loeffler, Ruitian Song, Jane S Hankins, Claudia M Hillenbrand
OBJECTIVE: The objective of this study is to evaluate radial free-breathing (FB) multiecho ultrashort TE (UTE) imaging as an alternative to Cartesian FB multiecho gradient-recalled echo (GRE) imaging for quantitative assessment of hepatic iron content (HIC) in sedated patients and subjects unable to perform breath-hold (BH) maneuvers. MATERIALS AND METHODS: FB multiecho GRE imaging and FB multiecho UTE imaging were conducted for 46 test group patients with iron overload who could not complete BH maneuvers (38 patients were sedated, and eight were not sedated) and 16 control patients who could complete BH maneuvers...
May 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28500320/oral-administration-of-trace-element-magnesium-significantly-improving-the-cognition-and-locomotion-in-hepatic-encephalopathy-rats
#6
Ying Li, Chang Xue Ji, Li Hong Mei, Jin Wei Qiang, Shuai Ju
The therapeutic effects of iron, zinc and magnesium trace elements, as well as rifaximin were investigated and compared in HE rats. In this study, HE rats were treated with either ferrous sulfate (HE-Fe, 30 mg/kg/day), zinc sulfate (HE-Zn, 30 mg/kg/day), magnesium sulfate (HE-Mg, 50 mg/kg/day) or rifaximin (HE-Rf, 50 mg/kg/day), which was mixed with water and administered orally for 61 days. The Morris water maze (MWM) and open-field tests were used to evaluate cognitive and locomotor function. The blood ammonia levels before and after administration of the glutamine challenge test, manganese concentration and glutamine synthetase (GS) activity were measured...
May 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28493820/deoxyguanosine-kinase-deficiency-a-report-of-four-patients
#7
Özlem Ünal, Burcu Hişmi, Mustafa Kılıç, Hayriye Hızarcıoğlu Gülşen, Turgay Coşkun, Serap Hatice Sivri, Ali Dursun, Aysel Yüce, Ayşegül Tokatlı
BACKGROUND: Hepatic involvement is a common feature in childhood mitochondrial disorders. Deoxyguanosine kinase (DGUOK) deficiency is one of the mitochondrial DNA depletion syndromes associated with hepatocerebral syndrome. Hepatic disease and neurologic dysfunction occurs within weeks after birth. Low birth weight is one of the common features. This study aims to describe the clinical and laboratory features of four infants carrying four different pathogenic variants in the DGUOK gene...
May 11, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28490733/pharmacometabolomics-for-predicting-variable-busulfan-exposure-in-paediatric-haematopoietic-stem-cell-transplantation-patients
#8
Bora Kim, Ji Won Lee, Kyung Taek Hong, Kyung-Sang Yu, In-Jin Jang, Kyung Duk Park, Hee Young Shin, Hyo Seop Ahn, Joo-Youn Cho, Hyoung Jin Kang
Owing to its narrow therapeutic range and high pharmacokinetic variability, optimal dosing for busulfan is important to minimise overexposure-related systemic toxicity and underexposure-related graft failure. Using global metabolomics, we investigated biomarkers for predicting busulfan exposure. We analysed urine samples obtained before busulfan administration from 59 paediatric patients divided into 3 groups classified by area under the busulfan concentration-time curve (AUC), i.e., low-, medium-, and high-AUC groups...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28483679/sensitive-and-non-invasive-assessment-of-hepatocellular-iron-using-a-novel-room-temperature-susceptometer
#9
Johannes Mueller, Hanna Raisi, Vanessa Rausch, Teresa Peccerella, David Simons, Christian Ziener, Heinz-Peter Schlemmer, Helmut Karl Seitz, Nina Waldburger, Thomas Longerich, Beate Katharina Straub, Sebastian Mueller
PURPOSE: Liver iron accumulates in various chronic liver diseases where it is an independent factor of survival and cancerogenesis. We here tested a novel room-temperature susceptometer (RTS) to noninvasively assess liver iron concentration (LIC). MATERIALS AND METHODS: 264 patients with or without signs of iron overload or liver disease were prospectively enrolled. 35 patients underwent liver biopsy with semiquantitative iron determination (Prussian Blue staining), atomic absorption spectroscopy (AAS, n=33) or MRI (n=15)...
May 5, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28481195/prevalence-of-fatty-liver-disease-and-hepatic-iron-overload-in-a-northeastern-german-population-by-using-quantitative-mr-imaging
#10
Jens-Peter Kühn, Peter Meffert, Christian Heske, Marie-Luise Kromrey, Carsten O Schmidt, Birger Mensel, Henry Völzke, Markus M Lerch, Diego Hernando, Julia Mayerle, Scott B Reeder
Purpose To quantify liver fat and liver iron content by measurement of confounder-corrected proton density fat fraction (PDFF) and R2* and to identify clinical associations for fatty liver disease and liver iron overload and their prevalence in a large-scale population-based study. Materials and Methods From 2008 to 2013, 2561 white participants (1336 women; median age, 52 years; 25th and 75th quartiles, 42 and 62 years) were prospectively recruited to the Study of Health in Pomerania (SHIP). Complex chemical shift-encoded magnetic resonance (MR) examination of the liver was performed, from which PDFF and R2* were assessed...
May 5, 2017: Radiology
https://www.readbyqxmd.com/read/28473864/activation-of-ampk-by-buddleja-officinalis-maxim-flower-extract-contributes-to-protecting-hepatocytes-from-oxidative-stress
#11
Ji Yun Jung, Chul Won Lee, Sang Mi Park, Kyung Hwan Jegal, Jae Kwang Kim, Chung A Park, Il Je Cho, Dae Hwa Jung, Won G An, Sae Kwang Ku, Rongjie Zhao, Sang Chan Kim
The Buddleja officinalis Maxim. flower is used in traditional Chinese and Korean medicine to treat inflammation, vascular diseases, headache, and stroke, as well as enhance liver function. This research investigated the effects of B. officinalis Maxim. flower extract (BFE) on hepatotoxicity. The cytoprotective effects and mechanism of BFE against severe mitochondrial dysfunction and H2O2 production in hepatotoxicity induced by coadministration of arachidonic acid (AA) and iron were observed in the HepG2 cell line...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28471307/complications-pattern-and-burden-of-the-disease-in-patients-affected-by-beta-thalassaemia-major
#12
Fedele Bonifazi, Rosa Conte, Paola Baiardi, Donato Bonifazi, Mariagrazia Felisi, Paola Giordano, Viviana Giannuzzi, Angela Iacono, Rosa Padula, Alessia Pepe, Maria Caterina Putti, Lucia Ruggieri, Giovanni Carlo Del Vecchio, Aldo Filosa, Aurelio Maggio, Adriana Ceci
OBJECTIVES: Despite the correct application of blood transfusions and chelation treatments, beta-thalassaemia patients have many complications. Systematic population analyses on types and frequency of these complications are very few. The aim of this study is to characterize the complications,their risk factors and their clinical and economic impact. METHODS: Complications at baseline and events occurred during 1 observational year were analysed in 272 patients aged >12 years...
May 4, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28464763/sporadic-porphyria-in-a-patient-with-stage-ii-melanoma-treated-with-interferon-%C3%AE
#13
Valerie Reymann, Celine Girard, Olivier Dereure, Bernard Guillot, Aurélie Du Thanh
Porphyria cutanea tarda (PCT) is the most common form of human porphyria, due to reduced activity of uroporphyrinogen decarboxylase (UROD). There are many factors which can trigger PCT such as viral infections, excessive alcohol intake, iron overload, hepatotoxic drugs and hepatic tumours. Drug induced PCT is well documented but PCT induced by interferon α has rarely been described and only in cases of Hepatitis C Virus (HCV) infection or haematological malignancies. Here, we report the first case of de novo PCT induced by adjuvant interferon α (IFNα) therapy in a patient with stage II melanoma...
May 2, 2017: Current Drug Safety
https://www.readbyqxmd.com/read/28448199/deferiprone-for-the-treatment-of-transfusional-iron-overload-in-thalassemia
#14
Janet L Kwiatkowski, Ami Belmont
Transfusional iron overload can lead to hepatic fibrosis, arrhythmias and congestive heart failure and a number of endocrinopathies. Deferiprone is an oral iron chelator recently approved for use in the United States as a second line agent for the treatment of transfusional iron overload in patients with thalassemia. Areas covered: This article will review the data regarding the efficacy of deferiprone for iron chelation and prevention and reversal of iron related complications, the drug's adverse effect profile, and the use of this drug in combination regimens...
April 27, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28438835/il-1%C3%AE-transcriptionally-activates-hepcidin-by-inducing-c-ebp%C3%AE-expression-in-hepatocytes
#15
Yohei Kanamori, Masaru Murakami, Makoto Sugiyama, Osamu Hashimoto, Tohru Matsui, Masayuki Funaba
Hepcidin is a liver-derived hormone that negatively regulates serum iron levels and is mainly regulated at the transcriptional level. Previous studies have clarified that in addition to hepatic iron levels, inflammation also efficiently increases hepatic hepcidin expression. The principle regions responsible for efficient hepcidin transcription are bone morphogenetic protein-responsive elements (BMP-REs) 1 and 2 as well as the signal transducer and activator of transcription 3-binding site (STAT-BS). Here, we show that the proinflammatory cytokine interleukin-1β (IL-1β) efficiently increases hepcidin expression in human HepG2 liver-derived cells and primary mouse hepatocytes...
April 24, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28436143/corrigendum-strain-and-time-dependent-alterations-in-hepatic-iron-metabolism-in-a-murine-model-of-nonalcoholic-steatohepatitis
#16
Steven A Bloomer, Alicia K Olivier, Ottar M Bergmann, M Meleah Mathahs, Kimberly A Broadhurst, Hasan Hicsasmaz, Kyle E Brown
No abstract text is available yet for this article.
April 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28433108/genetic-and-environmental-modifiers-of-wilson-disease
#17
Valentina Medici, Karl-Heinz Weiss
Wilson disease (WD) is characterized by remarkable variety in its phenotypic presentation. Patients with WD can present with hepatic, neurologic, and psychiatric symptoms combined in different and unpredictable ways. Importantly, no convincing phenotype-genotype correlation has ever been identified, opening the possibility that other genes, aside from ATPase copper-transporting beta (ATP7B), are involved in the pathogenesis of this condition. In addition, modifier genes, or genes that can affect the expression of other genes, may be involved...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28429228/magnetic-resonance-imaging-of-tumors-with-the-use-of-iron-oxide-magnetic-nanoparticles-as-a-contrast-agent
#18
A S Semkina, M A Abakumov, N F Grinenko, A A Lipengolts, N V Nukolova, V P Chekhonin
We studied the possibility of using BSA-coated magnetic iron oxide nanoparticles for magnetic resonance imaging diagnosis of C6 glioblastoma, 4T1 mammary adenocarcinoma, and RS-1 hepatic mucous carcinoma. In all three cases, magnetic nanoparticles accumulated in the tumor and its large vessels. Magnetic resonance imaging with contrast agent allows visualization of the tumor tissue and its vascularization.
April 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28426710/change-in-iron-metabolism-in-rats-after-renal-ischemia-reperfusion-injury
#19
Guang-Liang Xie, Lin Zhu, Yan-Min Zhang, Qian-Nan Zhang, Qing Yu
Previous studies have indicated that hepcidin, which can regulate iron efflux by binding to ferroportin-1 (FPN1) and inducing its internalization and degradation, acts as the critical factor in the regulation of iron metabolism. However, it is unknown whether hepcidin is involved in acute renal ischemia/reperfusion injury (IRI). In this study, an IRI rat model was established via right renal excision and blood interruption for 45 min in the left kidney, and iron metabolism indexes were examined to investigate the change in iron metabolism and to analyze the role of hepcidin during IRI...
2017: PloS One
https://www.readbyqxmd.com/read/28411055/ppar%C3%AE-ppar%C3%AE-and-srebp-1-pathways-mediated-waterborne-iron-fe-induced-reduction-in-hepatic-lipid-deposition-of-javelin-goby-synechogobius-hasta
#20
Guang-Hui Chen, Zhi Luo, Feng Chen, Xi Shi, Yu-Feng Song, Wen-Jing You, Xu Liu
The 42-day experiment was conducted to investigate the effects and mechanism of waterborne Fe exposure influencing hepatic lipid deposition in Synechogobius hasta. For that purpose, S. hasta were exposed to four Fe concentrations (0 (control), 0.36, 0.72 and 1.07μM Fe) for 42days. On days 21 and 42, morphological parameters, hepatic lipid deposition and Fe contents, and activities and mRNA levels of enzymes and genes related to lipid metabolism, including lipogenic enzymes (6PGD, G6PD, ME, ICDH, FAS and ACC) and lipolytic enzymes (CPTI, HSL), were analyzed...
April 11, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
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