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Hepatic iron

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https://www.readbyqxmd.com/read/29772226/potential-role-of-peroxisome-proliferator-activated-receptor-gamma-activation-on-serum-visfatin-and-trace-elements-in-high-fat-diet-induced-type-2-diabetes-mellitus
#1
Arshia Tabassum, Syeda Nuzhat Fatima Zaidi, Kausar Yasmeen, Tabassum Mahboob
AIMS: Electrolytes and trace elements dysregulation play an important role in the progression of obesity and diabetes complications. The present study was designed to evaluate the insulin sensitizing effects of peroxisomes proliferators activated receptor gamma (PPAR-γ) agonist on trace elements in obesity induced type 2 diabetes mellitus and correlate with serum visfatin. MATERIALS AND METHODS: Wistar rats were categorized into five groups. Group I served as control; Group II fed on high fat diet (HFD); Group III fed on HFD and treated with rosiglitazone (3 mg/kg) for 7 days; Group IV were T2DM rats induce by HFD and low dose of streptozotocin (i...
May 14, 2018: Life Sciences
https://www.readbyqxmd.com/read/29771984/dna-methylation-of-hepatic-iron-sensing-genes-and-the-regulation-of-hepcidin-expression
#2
Paul A Sharp, Rachel Clarkson, Ahmed Hussain, Robert J Weeks, Ian M Morison
Production of the iron regulatory peptide hepcidin is tightly controlled by a network of proteins in hepatocytes that sense levels of iron in the circulation (as diferric-transferrin) and in tissues (in ferritin). Human studies show high variability in the normal range of serum hepcidin levels. We have postulated that this may, in part, be related to inter-individual variability in the expression of genes in the iron sensing pathway, potentially governed by epigenetic factors. Here, we have investigated whether genes encoding hepatic iron sensing proteins and hepcidin are regulated by DNA methylation...
2018: PloS One
https://www.readbyqxmd.com/read/29769185/unusual-case-of-iron-overload-with-cancer-mimicking-abdominal-splenosis
#3
Giacomo Marchi, Giacomo Avesani, Alberto Zamò, Domenico Girelli
A 48-year-old man, former alcohol abuser and drug addicted, was referred to our tertiary referral centre for iron disorders because of marked hyperferritinaemia. His clinical history revealed chronic hepatitis C, ß-thalassaemia trait and post-traumatic splenectomy at age of 22. MRI-estimated liver iron content was markedly elevated, while first-line genetic test for haemochromatosis was negative. Alpha-fetoprotein was increased but liver ultrasonography did not reveal focal liver lesions. Multiphasic contrast-enhanced CT confirmed this result but showed two abdominal masses (diameter of 9 cm and 7 cm, respectively) among bowel loops, strongly suspicious for cancer...
May 16, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29761622/host-heme-oxygenase-1-friend-or-foe-in-tackling-pathogens
#4
REVIEW
Nisha Singh, Zeeshan Ahmad, Navin Baid, Ashwani Kumar
Infectious diseases are a major challenge in management of human health worldwide. Recent literature suggests that host immune system could be modulated to ameliorate the pathogenesis of infectious disease. Heme oxygenase (HMOX1) is a key regulator of cellular signaling and it could be modulated using pharmacological reagents. HMOX1 is a cytoprotective enzyme that degrades heme to generate carbon monoxide (CO), biliverdin, and molecular iron. CO and biliverdin (or bilirubin derived from it) can restrict the growth of a few pathogens...
May 14, 2018: IUBMB Life
https://www.readbyqxmd.com/read/29752985/hemochromatosis-evaluation-of-the-dietary-iron-model-and-regulation-of-hepcidin
#5
Gautam Rishi, Eriza S Secondes, V Nathan Subramaniam
Our knowledge of iron homeostasis has increased steadily over the last two decades; much of this has been made possible through the study of animal models of iron-related disease. Analysis of transgenic mice with deletions or perturbations in genes known to be involved in systemic or local regulation of iron metabolism has been particularly informative. The effect of these genes on iron accumulation and hepcidin regulation is traditionally compared with wildtype mice fed a high iron diet, most often a 2% carbonyl iron diet...
May 9, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29743790/safety-and-efficacy-of-sofosbuvir-and-daclatasvir-for-hepatitis-c-virus-infection-in-patients-with-%C3%AE-thalassemia-major
#6
Rajiv Mehta, Mayank Kabrawala, Subhash Nandwani, Pankaj Desai, Vishwa Bhayani, Sanjay Patel, Viral Parekh
Background and Aims: β-thalassemia major patients are susceptible to Hepatitis C Virus (HCV) infection owing to life-long dependency for blood-transfusion. Moreover, this patient population is at risk of progression of liver fibrosis or development of cirrhosis as a consequence of both iron overload and HCV infection. Hence, this study was carried out to evaluate efficacy and safety of the combination regimen of sofosbuvir and daclatasvir for HCV infection in β-thalassemia major patients...
March 2018: Journal of Clinical and Experimental Hepatology
https://www.readbyqxmd.com/read/29743673/ancient-hepatitis-b-viruses-from-the-bronze-age-to-the-medieval-period
#7
Barbara Mühlemann, Terry C Jones, Peter de Barros Damgaard, Morten E Allentoft, Irina Shevnina, Andrey Logvin, Emma Usmanova, Irina P Panyushkina, Bazartseren Boldgiv, Tsevel Bazartseren, Kadicha Tashbaeva, Victor Merz, Nina Lau, Václav Smrčka, Dmitry Voyakin, Egor Kitov, Andrey Epimakhov, Dalia Pokutta, Magdolna Vicze, T Douglas Price, Vyacheslav Moiseyev, Anders J Hansen, Ludovic Orlando, Simon Rasmussen, Martin Sikora, Lasse Vinner, Albert D M E Osterhaus, Derek J Smith, Dieter Glebe, Ron A M Fouchier, Christian Drosten, Karl-Göran Sjögren, Kristian Kristiansen, Eske Willerslev
Hepatitis B virus (HBV) is a major cause of human hepatitis. There is considerable uncertainty about the timescale of its evolution and its association with humans. Here we present 12 full or partial ancient HBV genomes that are between approximately 0.8 and 4.5 thousand years old. The ancient sequences group either within or in a sister relationship with extant human or other ape HBV clades. Generally, the genome properties follow those of modern HBV. The root of the HBV tree is projected to between 8.6 and 20...
May 9, 2018: Nature
https://www.readbyqxmd.com/read/29743442/fluoride-induced-iron-overload-contributes-to-hepatic-oxidative-damage-in-mouse-and-the-protective-role-of-grape-seed-proanthocyanidin-extract
#8
Qiang Niu, Ping He, Shangzhi Xu, Ruling Ma, Yusong Ding, Lati Mu, Shugang Li
Emerging evidence has demonstrated that iron overload plays an important role in oxidative stress in the liver. This study aimed to explore whether fluoride-induced hepatic oxidative stress is associated with iron overload and whether grape seed proanthocyanidin extract (GSPE) alleviates oxidative stress by reducing iron overload. Forty Kunming male mice were randomly divided into 4 groups and treated for 5 weeks with distilled water (control), sodium fluoride (NaF) (100 mg/L), GSPE (400 mg/kg bw), or NaF (100 mg/L) + GSPE (400 mg/kg bw)...
2018: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/29732486/metallothionein-is-elevated-in-liver-and-duodenum-of-atp7b-mice
#9
Chengcheng Christine Zhang, Martin Volkmann, Sabine Tuma, Wolfgang Stremmel, Uta Merle
Different mutations in the copper transporter gene Atp7b are identified as the primary cause of Wilson's disease. These changes result in high copper concentrations especially in the liver and brain, and consequently lead to a dysfunction of these organs. The Atp7(-/-) mouse is an established animal model for Wilson's disease and characterized by an abnormal copper accumulation, a low serum oxidase activity and an increased copper excretion in urine. Metallothionein (MT) proteins are low molecular weight metal-binding proteins and essential for the zinc homeostasis but also play a role for the regulation of other metals, e...
May 7, 2018: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/29718659/bacteria-carried-iron-oxide-nanoparticles-for-treatment-of-anemia
#10
Victor Garcés, Alba Rodriguez-Nogales, Ana Gonzalez, Natividad Gálvez, Elena Rodriguez-Cabezas, María-Luisa García-Martín, Lucía Gutiérrez, Deyanira Rondon, Monica Olivares, Julio Galvez, Jose Dominguez-Vera
The efficiency of maghemite nanoparticles for the treatment of anemia was sensibly higher when nanoparticles were incorporated onto the probiotic bacterium Lactobacillus fermentum (MNP-bacteria) than when administrated as uncoated nanoparticles (MNP). Plasma iron and hemoglobin, intestine expression of divalent metal transporter 1 (DMT1) and duodenal cytochrome B (DcytB), as well as hepatic expression of the hormone hepcidin were fully restored to healthy levels after administration of MNP-bacteria but not of MNP...
May 2, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29712435/prolyl-hydroxylase-inhibitors-a-breakthrough-in-the-therapy-of-anemia-associated-with-chronic-diseases
#11
Amit Arvind Joharapurkar, Vrajesh Bhaskarbhai Pandya, Vishal J Patel, Ranjit C Desai, Mukul R Jain
Chronic kidney disease, cancer, chronic inflammatory disorders, nutritional and genetic deficiency can cause anemia. Hypoxia causes induction of hypoxia-inducible factor (HIF), which stimulates erythropoietin (EPO) synthesis. Prolyl hydroxylase domain (PHD) enzyme inhibition can stabilize hypoxia-inducible factor (HIF). HIF stabilization also decreases hepcidin, a hormone of hepatic origin, which regulates iron homeostasis. PHD inhibitors represent the novel pharmacological treatment of anemia of chronic diseases...
May 1, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29701149/nigella-sativa-l-and-its-bioactive-constituents-as-hepatoprotectant-a-review
#12
Heena Tabassum, Asad Ahmad, Iffat Zareen Ahmad
BACKGROUND: The pharmacological properties of Nigella sativa L. are well attributed to the presence of bioactive compounds, mainly, thymoquinone (TQ), thymol (THY) and α hederin and their antioxidant effects. TQ,THY and alpha-hederin (α-hederin) provide protection to liver from injury via different mechanisms including inhibition of iron-dependent lipid peroxidation, elevation in total thiol content and (GSH) level, radical scavenging, increasing the activity of quinone reductase, catalase, superoxide dismutase(SOD) and glutathione transferase (GST), inhibition of NF-κB activity and inhibition of both (COX) and (LOX) protects liver from injuries...
April 26, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29692934/a-web-based-platform-to-collect-data-from-esrd-patients-undergoing-dialysis-methods-and-preliminary-results-from-the-brazilian-dialysis-registry
#13
Jocemir R Lugon, Pedro A Gordan, Fernando S Thomé, Antonio A Lopes, Yoshimi J A Watanabe, Carmen Tzanno, Ricardo C Sesso
Introduction: The methods and initial results of a web-based platform to collect data from patients receiving maintenance dialysis in Brazil are reported. Methods: Companies providing management software for dialysis centers adapted their system to comply with a formulary of the Brazilian Society of Nephrology. Baseline and follow-up individual patients' data were transmitted via Internet on monthly bases to the coordinating center from 2011 to 2017. Results: 73 dialysis centers provided information of 24,930 patients: 57% were male, 28% were 64 years old or older, and 13% were overweight/obese...
2018: International Journal of Nephrology
https://www.readbyqxmd.com/read/29684610/fishmeal-replacement-by-rice-protein-concentrate-with-xylooligosaccharides-supplement-benefits-the-growth-performance-antioxidant-capability-and-immune-responses-against-aeromonas-hydrophila-in-blunt-snout-bream-megalobrama-amblycephala
#14
Kenneth Prudence Abasubong, Wen-Bin Liu, Ding-Dong Zhang, Xiang-Yang Yuan, Si-Lei Xia, Chao Xu, Xiang-Fei Li
This study aimed to investigate the effects of fishmeal (FM) replacement by rice protein concentrate (RPC) with a xylooligosaccharides supplement on the growth performance, antioxidant capability and immune response against Aeromonas hydrophila in blunt snout bream (Megalobrama amblycephala). Fish (46.85 ± 0.34 g) were randomly assigned to one of 6 diets, namely the control diet (containing FM), the RPC diet (FM replaced by RPC) and RPC diet supplemented with 0.5, 1.5, 2.3 and 3% XOS respectively, for 8 weeks...
April 20, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29678877/deferoxamine-ameliorates-adipocyte-dysfunction-by-modulating-iron-metabolism-in-ob-ob-mice
#15
Hong-Fa Yan, Zhao-Yu Liu, Zhi-Ang Guan, Chuang Guo
OBJECTIVE: The mechanisms underlying obesity and anti-obesity processes have garnered remarkable attention as potential therapeutic targets for obesity-associated metabolic syndromes. Our prior work has shown the healing efficacy of iron reduction therapies for hepatic steatosis in a rodent model of diabetes and obesity. In this study, we investigated how iron depletion by deferoxamine (DFO) affected adipocyte dysfunction in the epididymal adipose tissues of ob/ob mice. METHODS: Male ob/ob mice were assigned to either a vehicle-treated or DFO-treated group...
April 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29675354/quantification-of-liver-iron-concentration-using-the-apparent-susceptibility-of-hepatic-vessels
#16
Saifeng Liu, Chaoyue Wang, Xiaoqi Zhang, Panli Zuo, Jiani Hu, E Mark Haacke, Hongyan Ni
Background: The quantification of liver iron concentration (LIC) is important for the monitoring of the body iron level in patients with iron overload. Conventionally, LIC is quantified through R2 or R2* mapping using MRI. In this paper, we demonstrate an alternative approach for LIC quantification through measuring the apparent susceptibility of hepatic vessels using quantitative susceptibility mapping (QSM). Methods: QSM was performed in the liver region with the iterative susceptibility weighted imaging and mapping (iSWIM) algorithm, using the geometry of the vessels extracted from magnitude images as constraints...
March 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29666722/postmenopausal-deep-infiltrating-endometriosis-of-the-colon-rare-location-and-novel-medical-therapy
#17
Benjamin M Snyder, Joseph W Beets, Bruce A Lessey, Samuel R W Horton, Gary A Abrams
We report an uncommon case of deep infiltrating endometriosis of the colon presenting as iron deficiency anemia nine years after hysterectomy with bilateral salpingo-oophorectomy. The endometrial implant was found at the hepatic flexure, an exceedingly rare location for endometriosis invasion with no cases distinctly reported in the literature. Additionally, the presentation of gastrointestinal endometriosis as iron deficiency anemia is not well documented in the literature. Instead of surgery, we prescribed a novel medical therapeutic approach using conjugated estrogen-bazedoxifene to antagonize the proliferative effects of estrogen on endometrial tissue...
2018: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/29663188/magnetic-resonance-imaging-during-management-of-patients-with-transfusion-dependent-thalassemia-a-single-center-experience
#18
Zeynep Karakas, Yasin Yilmaz, Zuhal Bayramoglu, Serap Karaman, Selime Aydogdu, Ayse Ozkan Karagenc, Deniz Tugcu, Memduh Dursun
BACKGROUND: Cardiac and hepatic magnetic resonance imaging evaluation during treatment can tailor physicians' chelation therapy titrations. AIM: The aim of the study was to assess the relationship of cardiac and hepatic T2* values with chelation therapy in patients with transfusion-dependent thalassemia (TDT). METHODS: A total of 106 patients with TDT who were followed up in Istanbul Medical Faculty Thalassemia Center were evaluated for the study...
April 16, 2018: La Radiologia Medica
https://www.readbyqxmd.com/read/29644058/porphyria-and-kidney-diseases
#19
Nicolas Pallet, Alexandre Karras, Eric Thervet, Laurent Gouya, Zoubida Karim, Hervé Puy
The kidneys, after the bone marrow and liver, are third in terms of the amounts of haem synthesized daily. Haem is incorporated into haemoproteins that are critical to renal physiology. In turn, disturbances in haem metabolism interfere with renal physiology and are tightly interrelated with kidney diseases. Acute intermittent porphyria causes kidney injury, whereas medical situations associated with end-stage renal disease, such as porphyrin accumulation, iron overload and hepatitis C, participate in the inhibition of uroporphyrinogen decarboxylase and predispose the individual to porphyria cutanea tarda...
April 2018: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29642600/erratum-long-term-dexamethasone-exposure-down-regulates-hepatic-tfr1-and-reduces-liver-iron-concentration-in-rats-nutrients-2017-9-617
#20
(no author information available yet)
The Editorial Office of Nutrients would like to report an error in the published paper [1] [...].
April 10, 2018: Nutrients
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