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Hepatic iron

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https://www.readbyqxmd.com/read/28922657/methods-employed-in-cytofluorometric-assessment-of-eryptosis-the-suicidal-erythrocyte-death
#1
Mohamed Jemaà, Myriam Fezai, Rosi Bissinger, Florian Lang
Suicidal erythrocyte death or eryptosis contributes to or even accounts for anemia in a wide variety of clinical conditions, such as iron deficiency, dehydration, hyperphosphatemia, vitamin D excess, chronic kidney disease (CKD), hemolytic-uremic syndrome, diabetes, hepatic failure, malignancy, arteriitis, sepsis, fever, malaria, sickle-cell disease, beta-thalassemia, Hb-C and G6PD-deficiency, Wilsons disease, as well as advanced age. Moreover, eryptosis is triggered by a myriad of xenobiotics and endogenous substances including cytotoxic drugs and uremic toxins...
September 1, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28918510/acquired-hepatocerebral-degeneration-ahd-a-peculiar-neurological-impairment-in-advanced-chronic-liver-disease
#2
A Pigoni, F Iuculano, C Saetti, L Airaghi, L Burdick, S Spreafico, M Curioni, R Lombardi, L Valenti, A L Fracanzani, S Fargion
We discuss the case of a rare and often unrecognized neurologic syndrome, called Acquired Hepatocerebral Degeneration (AHD), observed in patients with advanced liver disease and portosystemic shunts. The clinical manifestations can be very heterogeneous and in our case included a combination of cerebellar and extrapyramidal signs, arisen in a period of few days. Brain Magnetic Resonance Imaging (MRI) showed, in T1-weighted images, diffuse bilateral hyper intensities in basal ganglia and biemispheric brain and cerebellar cortices, resembling paramagnetic deposits...
September 16, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28902419/reassessing-the-safety-concerns-of-utilizing-blood-donations-from-patients-with-hemochromatosis
#3
REVIEW
Adam C Winters, Douglas Tremblay, Suzanne Arinsburg, John Mascarenhas, Thomas D Schiano
Hereditary hemochromatosis (HH) is a genetic disorder of iron metabolism which may lead to iron overload. Clinical penetrance is low, however those afflicted may develop cirrhosis, hepatocellular carcinoma, diabetes mellitus and cardiomyopathy. Treatment involves regular phlebotomy to reduce the systemic iron burden. In many countries-including the United States-numerous blood centers do not accept donated blood obtained from HH patients during therapeutic phlebotomy and there are inconsistent positions regarding this globally...
September 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28900315/efficacy-and-safety-of-deferasirox-in-pediatric-patients-of-thalassemia-at-a-tertiary-care-teaching-hospital
#4
Dhaval R Thakor, Chetna K Desai, Jigar D Kapadia, Ram K Dikshit, K M Mehariya
OBJECTIVE: To evaluate efficacy, safety and utilization pattern of deferasirox in paediatric patients of transfusion dependant β Thalassemia Major at a tertiary care teaching hospital in Gujarat. MATERIALS AND METHODS: This observational, prospective-retrospective, single centre, continuous study was conducted in a tertiary care teaching hospital among paediatric patients of transfusion dependent β Thalassemia Major. Patients treated with deferasirox for not more than 12 weeks were enrolled...
April 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/28894708/hepatic-proteins-and-inflammatory-markers-in-rheumatoid-arthritis-patients
#5
Manel Ben-Hadj-Mohamed, Souhir Khelil, Mokhles Ben Dbibis, Latifa Khlifi, Hend Chahed, Salima Ferchichi, Elyes Bouajina, Abdelhédi Miled
BACKGROUND: Rheumatoid arthritis is an autoimmune inflammatory rheumatic disease that causes chronic synovial inflammation eventually leading to joint destruction and disability. The aim of this study was to determine the variations of hepatic proteins, myeloperoxidase, and iron in rheumatoid arthritis Tunisian patients and their implications in inflammation and in iron metabolism. METHODS: Overall, 172 patients from the Rheumatology Department of the University Hospital "Farhat Hached", Sousse-Tunisia between 2011 and 2012, with rheumatoid arthritis (97...
August 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28893916/the-role-of-activins-in-hepcidin-regulation-during-malaria
#6
Natasha Spottiswoode, Andrew E Armitage, Andrew R Williams, Alex J Fyfe, Sumi Biswas, Susanne H Hodgson, David Llewellyn, Prateek Choudhary, Simon J Draper, Patrick Duffy, Hal Drakesmith
Epidemiological observations have linked increased host iron with malaria susceptibility, and perturbed iron handling has been hypothesized to contribute to the potentially life threatening anemia that may accompany blood-stage malaria infection. To improve our understanding of these relationships, we examined the pathways involved in regulation of the master controller of iron metabolism, the hormone hepcidin, in malaria infection. We show that hepcidin upregulation in Plasmodium berghei murine malaria infection was accompanied by changes in expression of bone morphogenetic protein (BMP)/sons of mothers against decapentaplegic (SMAD) pathway target genes, a key pathway involved in hepcidin regulation...
September 11, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28888833/iron-depletion-induces-hepatic-secretion-of-biliary-lipids-and-glutathione-in-rats
#7
Alena Prasnicka, Jolana Cermanova, Milos Hroch, Eva Dolezelova, Lucie Rozkydalova, Tomas Smutny, Alejandro Carazo, Jaroslav Chladek, Martin Lenicek, Petr Nachtigal, Libor Vitek, Petr Pavek, Stanislav Micuda
Iron depletion (ID) has been shown to induce the liver expression of Cyp7a1, the rate-limiting enzyme initiating conversion of cholesterol to bile acids (BA), although the effect on bile acids metabolism and bile production is unknown. Therefore, we investigated changes in bile secretion and BA synthesis during diet-induced iron depletion (ID) in rats. ID increased bile flow along with augmented biliary excretion of bile acids, glutathione, cholesterol and phospholipids. Accordingly, we found transcriptional upregulation of the Cyp7a1, Cyp8b1, and Cyp27a1 BA synthetic enzymes, as well as induction of the Abcg5/8 cholesterol transporters in ID rat livers...
September 6, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28888202/iron-accumulation-in-senescent-cells-is-coupled-with-impaired-ferritinophagy-and-inhibition-of-ferroptosis
#8
Shashank Masaldan, Sharnel A S Clatworthy, Cristina Gamell, Peter M Meggyesy, Antonia-Tonia Rigopoulos, Sue Haupt, Ygal Haupt, Delphine Denoyer, Paul A Adlard, Ashley I Bush, Michael A Cater
Cellular senescence is characterised by the irreversible arrest of proliferation, a pro-inflammatory secretory phenotype and evasion of programmed cell death mechanisms. We report that senescence alters cellular iron acquisition and storage and also impedes iron-mediated cell death pathways. Senescent cells, regardless of stimuli (irradiation, replicative or oncogenic), accumulate vast amounts of intracellular iron (up to 30-fold) with concomitant changes in the levels of iron homeostasis proteins. For instance, ferritin (iron storage) levels provided a robust biomarker of cellular senescence, for associated iron accumulation and for resistance to iron-induced toxicity...
September 1, 2017: Redox Biology
https://www.readbyqxmd.com/read/28882060/mri-assessment-of-pituitary-iron-accumulation-by-using-pituitary-r2-in-%C3%AE-thalassemia-patients
#9
Mustafa Bozdağ, Selen Bayraktaroğlu, Yeşim Aydınok, Mehmet Cem Çallı
Background Patients with thalassemia major (TM) require repeated blood transfusions, which leads to accumulation of iron in a wide variety of tissues. Accumulation of iron in the pituitary gland can lead to irreversible hypogonadotropic hypogonadism (HH) in this group of patients. Purpose To investigate the reliability of pituitary-R2 as a marker to estimate the extent of pituitary iron load by comparing the pituitary magnetic resonance imaging (MRI) findings with hepatic iron load and serum ferritin levels...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28879543/apex-predatory-mammals-as-bioindicator-species-in-environmental-monitoring-of-elements-in-dinaric-alps-croatia
#10
Maja Lazarus, Ankica Sekovanić, Tatjana Orct, Slaven Reljić, Josip Kusak, Jasna Jurasović, Đuro Huber
Tissue element investigations of apex terrestrial mammals are very scarce in Europe. We quantified 16 essential and nonessential elements in the kidney cortex, liver, and muscle tissue of 467 brown bears (Ursus arctos), 125 gray wolves (Canis lupus), one Eurasian lynx (Lynx lynx), and three golden jackals (Canis aureus) from Croatia by inductively coupled plasma mass spectrometry (ICP-MS). Renal cadmium (0.6% of animals) and lead (1%) and hepatic lead (5%) were found in toxicologically relevant levels for mammals only in bears, while the other elements were within normal range...
September 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28875336/progression-of-liver-fibrosis-can-be-controlled-by-adequate-chelation-in-transfusion-dependent-thalassemia-tdt
#11
D Maira, E Cassinerio, A Marcon, M Mancarella, M Fraquelli, P Pedrotti, M D Cappellini
A substantial proportion of patients with transfusion-dependent beta-thalassemia major suffer from chronic liver disease. Iron overload resulting from repeated transfusions and HCV infection has been implicated in the development of liver fibrosis. Hepatic siderosis and fibrosis were assessed in 99 transfusion-dependent thalassemia (TDT) patients using transient elastography (TE) and liver iron concentration (LIC) assessed by T2*MRI at baseline and after 4 years. Data were analyzed retrospectively. At baseline, the overall mean liver stiffness measurement (LSM) was 7...
September 5, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28870272/in-rats-gestational-iron-deficiency-does-not-change-body-fat-or-hepatic-mitochondria-in-the-aged-offspring
#12
W D Rees, S M Hay, H E Hayes, C Birgovan, H J McArdle
Mitochondrial dysfunction and resulting changes in adiposity have been observed in the offspring of animals fed a high fat (HF) diet. As iron is an important component of the mitochondria, we have studied the offspring of female rats fed complete (Con) or iron-deficient (FeD) rations for the duration of gestation to test for similar effects. The FeD offspring were ~12% smaller at weaning and remained so because of a persistent reduction in lean tissue mass. The offspring were fed a complete (stock) diet until 52 weeks of age after which some animals from each litter were fed a HF diet for a further 12 weeks...
September 5, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28866669/observational-monitoring-of-patients-with-aplastic-anemia-and-low-intermediate-1-risk-of-myelodysplastic-syndromes-complicated-with-iron-overload
#13
Yali Du, Zhangbiao Long, Miao Chen, Bing Han, Bo Hou, Feng Feng
BACKGROUND: This study focuses on the iron overload (IOL) of patients with transfused aplastic anemia (AA) or a low/intermediate-1 risk of myelodysplastic syndrome (MDS). METHODS: Ninety-two AA or MDS patients with IOL were prospectively recruited. Clinical data were collected every 6 months, and organ magnetic resonance imaging T2* values were collected annually. Patients with IOL were chelated. RESULTS: Serum ferritin was correlated with liver T2* and pancreatic T2* in the AA and MDS groups...
2017: Acta Haematologica
https://www.readbyqxmd.com/read/28863932/tissue-iron-quantification-in-chronic-liver-diseases-using-mri-shows-a-relationship-between-iron-accumulation-in-liver-spleen-and-bone-marrow
#14
M França, L Martí-Bonmatí, G Porto, S Silva, S Guimarães, Á Alberich-Bayarri, J R Vizcaíno, H Pessegueiro Miranda
AIM: To investigate iron loading within the liver, pancreas, spleen, and bone marrow using magnetic resonance imaging (MRI) transverse relaxation rate (R2*), in patients with diffuse liver diseases; to evaluate the relationships between iron accumulation in these tissue compartments; and to assess the association between tissue iron overload and the pattern of hepatic cellular iron distribution (hepatocytes versus Kupffer cells). MATERIAL AND METHODS: Fifty-six patients with diffuse liver diseases had MRI-derived R2* values, using a multi-echo chemical-shift encoded MRI sequence, of the liver, pancreas, spleen, and vertebral bone marrow...
August 29, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28859237/cystathionine-%C3%AE-synthase-is-required-for-body-iron-homeostasis
#15
Yu-Fu Zhou, Xiao-Mei Wu, Gan Zhou, Ming-Dao Mu, Fa-Li Zhang, Fe-Mi Li, Christopher Qian, Fang Du, Wing-Ho Yung, Zhong-Ming Qian, Ya Ke
Cystathionine β-synthase (CBS) catalyzes the transsulfuration pathway and contributes, among other functions, to the generation of hydrogen sulfide (H2 S). In view of the exceptionally high expression of CBS in the liver and the common interleukin-6 (IL-6) pathway utilized in the regulatory systems of H2 S and hepcidin, we speculate that CBS is involved in body iron homeostasis. We found that CBS knock-out (CBS(-/-) ) mice exhibited anemia and a significant increase in iron content in the serum, liver, spleen and heart, along with severe damage to the liver, displaying a hemochromatosis-like phenotype...
August 31, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28851321/rare-triad-of-periampullary-carcinoid-duodenal-gastrointestinal-stromal-tumor-and-plexiform-neurofibroma-at-hepatic-hilum-in-neurofibromatosis-type-1-a-case-report
#16
Nihed Abdessayed, Rahul Gupta, Sarra Mestiri, Ahlem Bdioui, Mounir Trimech, Moncef Mokni
BACKGROUND: Neurofibromatosis type 1 is a relatively common inherited disorder. Patients with neurofibromatosis type 1 are at high risk of developing neurogenic, neuroendocrine and mesenchymal intra-abdominal tumors. Although coexistence of multiple tumors of different types is frequent in neurofibromatosis type 1, simultaneous occurrence of abdominal tumors of three types in very rare. CASE PRESENTATION: A 66-year-old lady with neurofibromatosis type 1 presented with painless progressive jaundice for six months...
August 29, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28833367/iron-metabolism-in-patients-with-graves-hyperthyroidism
#17
Stefan Fischli, Viktor von Wyl, Michael Trummler, Daniel Konrad, Stephan Wueest, Axel Ruefer, Kerstin Heering, Regina Streuli, Christian Steuer, Luca Bernasconi, Mike Recher, Christoph Henzen
OBJECTIVES: Graves' hyperthyroidism (GH) interferes with iron metabolism and elevates ferritin. The precise mechanisms remain unclear. The influence of thyroid hormones on the synthesis/regulation of hepcidin, an important regulator of iron metabolism, remains uncharacterized. DESIGN: Prospective observational study. PATIENTS: We included patients (n=31) with new-onset and untreated GH. MEASUREMENTS: Laboratory parameters indicative of iron metabolism (ferritin, transferrin, hepcidin), inflammatory markers/cytokines and smoking status were assessed at the diagnosis of GH (T0) and at euthyroidism (T1) in the same patients using multivariable analyses...
August 18, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28828587/tryptanthrin-prevents-oxidative-stress-mediated-apoptosis-through-amp-activated-protein-kinase-dependent-p38-mitogen-activated-protein-kinase-activation
#18
Eun Hye Jung, Ji Yun Jung, Hae Li Ko, Jae Kwang Kim, Sang Mi Park, Dae Hwa Jung, Chung A Park, Young Woo Kim, Sae Kwang Ku, Il Je Cho, Sang Chan Kim
Tryptanthrin (6,12-dihydro-6,12-dioxoindolo-(2,1-b)-quinazoline) has been reported to have a variety of pharmacological activities. Present study investigated the cytoprotective effects of tryptanthrin on arachidonic acid (AA) + iron-mediated oxidative stress and the molecular mechanisms responsible. In HepG2 cells, pretreatment with tryptanthrin inhibited the cytotoxic effect of AA + iron in a concentration-dependent manner. In addition, tryptanthrin prevented the changes in the levels of apoptosis-related proteins, and attenuated reactive oxygen species production, glutathione depletion, and mitochondrial membrane impairment induced by AA + iron...
August 21, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28819732/erratum-to-fructose-1-6-bisphosphate-reverts-iron-induced-phenotype-of-hepatic-stellate-cells-by-chelating-ferrous-ions
#19
Henrique Bregolin Dias, Gabriele Catyana Krause, Eamin Daidrê Squizani, Kelly Goulart Lima, Aline Daniele Schuster, Leonardo Pedrazza, Bruno de Souza Basso, Bianca Andrade Martha, Fernanda Cristina de Mesquita, Fernanda Bordignon Nunes, Márcio Vinícius Donadio, Jarbas Rodrigues de Oliveira
No abstract text is available yet for this article.
August 17, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28811946/are-all-mutations-the-same-a-rare-case-report-of-coexisting-mutually-exclusive-kras-and-braf-mutations-in-a-patient-with-metastatic-colon-adenocarcinoma
#20
Anusha Vittal, Akshay Middinti, Anup Kasi Loknath Kumar
29-year-old Hispanic woman presented to the clinic with complaints of abdominal pain, nausea, fatigue, and constipation. Laboratory tests indicated the presence of iron deficiency anemia and transaminitis. Imaging evaluation revealed marked hepatomegaly with multiple hepatic metastases and pelvic lymphadenopathy. Biopsy of the hepatic lesions showed adenocarcinoma positive for pan-cytokeratin, CMA5.2, villin, and CDX2. She was positive for tumor markers CA 19-9, CA-125, and CEA. Upon further evaluation, she was found to have colorectal cancer positive for KRAS and BRAF mutations...
2017: Case Reports in Oncological Medicine
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