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https://www.readbyqxmd.com/read/27919267/targeted-drug-delivery-of-near-ir-fluorescent-doxorubicin-conjugated-poly-ethylene-glycol-bisphosphonate-nanoparticles-for-diagnosis-and-therapy-of-primary-and-metastatic-bone-cancer-in-a-mouse-model
#1
S Rudnick-Glick, E Corem-Salkmon, I Grinberg, S Margel
BACKGROUND: Most primary and metastatic bone tumors demonstrate increased osteoclast activity and bone resorption. Current treatment is based on a combination of surgery, radiotherapy and chemotherapy. Severe side effects are associated with chemotherapy due to use of high dosage and nonspecific uptake. Bisphosphonates have a strong affinity to Ca(2+) ions and are widely used in the treatment of bone disorders. RESULTS: We have engineered a unique biodegradable bisphosphonate nanoparticle (NPs) bearing two functional surface groups: (1) primary amine groups for covalent attachment of a dye/drug (e...
December 5, 2016: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/27919185/modeling-the-effect-of-succimer-dmsa-dimercaptosuccinic-acid-chelation-therapy-in-patients-poisoned-by-lead
#2
Jan C H van Eijkeren, J Daniël N Olie, Sally M Bradberry, J Allister Vale, Irma de Vries, Harvey J Clewell, Jan Meulenbelt, Claudine C Hunault
CONTEXT: Kinetic models could assist clinicians potentially in managing cases of lead poisoning. Several models exist that can simulate lead kinetics but none of them can predict the effect of chelation in lead poisoning. Our aim was to devise a model to predict the effect of succimer (dimercaptosuccinic acid; DMSA) chelation therapy on blood lead concentrations. MATERIALS AND METHODS: We integrated a two-compartment kinetic succimer model into an existing PBPK lead model and produced a Chelation Lead Therapy (CLT) model...
December 5, 2016: Clinical Toxicology
https://www.readbyqxmd.com/read/27915165/re-assessing-gallium-67-as-a-therapeutic-radionuclide
#3
Muhamad F Bin Othman, Nabil R Mitry, Valerie J Lewington, Philip J Blower, Samantha Y A Terry
INTRODUCTION: Despite its desirable half-life and low energy Auger electrons that travel further than for other radionuclides, (67)Ga has been neglected as a therapeutic radionuclide. Here, (67)Ga is compared with Auger electron emitter (111)In as a potential therapeutic radionuclide. METHODS: Plasmid pBR322 studies allowed direct comparison between (67)Ga and (111)In (1MBq) in causing DNA damage, including the effect of chelators (EDTA and DTPA) and the effects of a free radical scavenger (DMSO)...
October 29, 2016: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/27913518/treatment-options-for-patients-with-myelodysplastic-syndromes-after-hypomethylating-agent-failure
#4
Hetty E Carraway
The treatment of patients with myelodysplastic syndromes (MDSs) has hinged primarily on supportive care (ie, blood transfusions, colony stimulating agents, iron chelation, etc.) and the US Food and Drug Administration-approved agents, including 5-azacytidine, deoxyazacytidine, and lenalidomide. For patients no longer benefitting from these agents, there is a paucity of effective therapies. The challenges at this time include our limited understanding of the mechanisms of resistance to these therapies and the variables employed to select next best therapies for patients based on: (1) their performance status and medical comorbidities; (2) the molecular feature(s) of their MDS; (3) the prior treatments they have received; and (4) the long-term goal(s)/possibilities for their future treatment (ie, transplant vs no transplant)...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27911474/is-chelation-therapy-efficient-for-the-treatment-of-intravenous-metallic-mercury-intoxication
#5
Daniela Pelclova, Stepanka Vlckova, Ondrej Bezdicek, Manuela Vaneckova, Pavel Urban, Petr Ridzon, Pavel Diblik, Tomas Navratil, Pavlina Klusackova, Kamil Vlcek, Olga Benesova, Pavel Trestik, Jiri Homolka, Sergey Zakharov
The efficacy of treatment for intravenous elemental mercury intoxication has not been fully studied with regard to clinical outcomes, and treatment recommendations vary. We treated a 41-year-old man with a history of drug abuse and depression who attempted suicide using 1 mL (13.53 g) metallic Hg i.v. He was admitted to the hospital two months later for dyspnoea and thoracic pain and was diagnosed with pneumonia. Hg deposits were seen in the lungs and extra-pulmonary organs. His blood level (372 μg/L) exceeded the population level of 5 μg/L by more than 70-fold...
December 2, 2016: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/27906525/the-clinical-utility-of-qsm-disease-diagnosis-medical-management-and-surgical-planning
#6
REVIEW
Sarah Eskreis-Winkler, Yan Zhang, Jingwei Zhang, Zhe Liu, Alexey Dimov, Ajay Gupta, Yi Wang
Quantitative susceptibility mapping (QSM) is an MR technique that depicts and quantifies magnetic susceptibility sources. Mapping iron, the dominant susceptibility source in the brain, has many important clinical applications. Herein, we review QSM applications in the diagnosis, medical management, and surgical treatment of disease. To assist in early disease diagnosis, QSM can identify elevated iron levels in the motor cortex of amyotrophic lateral sclerosis patients, in the substantia nigra of Parkinson's disease (PD) patients, in the globus pallidus, putamen, and caudate of Huntington's disease patients, and in the basal ganglia of Wilson's disease patients...
December 1, 2016: NMR in Biomedicine
https://www.readbyqxmd.com/read/27900772/hematopoietic-stem-cell-transplantation-for-people-with-%C3%A3-thalassaemia-major
#7
REVIEW
Vanitha A Jagannath, Zbys Fedorowicz, Amani Al Hajeri, Akshay Sharma
BACKGROUND: Thalassemia is an inherited autosomal recessive blood disorder, caused by mutations in globin genes or their regulatory regions. This results in a reduced rate of synthesis of one of the globin chains that make up haemoglobin. In ß-thalassaemia major there is an underproduction of ß-globin chains combined with excess of free α-globin chains. The excess free α-globin chains precipitate in red blood cells, leading to their destruction (haemolysis) and ineffective erythropoiesis...
November 30, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27896275/rationale-for-the-successful-management-of-edta-chelation-therapy-in-human-burden-by-toxic-metals
#8
REVIEW
Maria Elena Ferrero
Exposure to environmental and occupational toxicants is responsible for adverse effects on human health. Chelation therapy is the only procedure able to remove toxic metals from human organs and tissue, aiming to treat damage related to acute and/or chronic intoxication. The present review focuses on the most recent evidence of the successful use of the chelating agent ethylenediaminetetraacetic acid (EDTA). Assessment of toxic-metal presence in humans, as well as the rationale of EDTA therapy in cardiovascular and neurodegenerative diseases, is reported...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27894072/-rusty-hearts-is-it-time-to-rethink-iron-chelation-therapies-in-post-myocardial-infarction-setting
#9
EDITORIAL
Rohan Dharmakumar
No abstract text is available yet for this article.
October 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27893170/safety-profiles-of-iron-chelators-in-young-patients-with-haemoglobinopathies
#10
REVIEW
Sebastian Botzenhardt, Niya Li, Esther W Chan, Chor Wing Sing, Ian C K Wong, Antje Neubert
BACKGROUND: This review describes the safety of deferoxamine (DFO), deferiprone (DFP), deferasirox (DFX), and combined therapy in young patients less than 25 years of age with haemoglobinopathies. METHOD: Searches in electronic literature databases were performed. Studies reporting adverse events associated with iron chelation therapy were included. Study and reporting quality was assessed using AHRQ Risk of Bias Assessment Tool and McMaster Quality Assessment Scale of Harms...
November 28, 2016: European Journal of Haematology
https://www.readbyqxmd.com/read/27890816/pathophysiology-of-hemophilic-arthropathy-and-potential-targets-for-therapy
#11
REVIEW
Astrid E Pulles, Simon C Mastbergen, Roger E G Schutgens, Floris P J G Lafeber, Lize F D van Vulpen
Hemophilia is a congenital clotting factor deficiency characterized by spontaneous and trauma-related bleeding. Spontaneous bleeding shows a predilection for joints, and repeated hemarthroses lead to a disabling condition called hemophilic arthropathy. Treatment of this condition consists of preventing joint bleeding on the one hand and orthopedic surgery as a last resort on the other. Up till now, there is no disease modifying therapy available to fill the gap between these extremes. This review provides an overview of the pathogenesis of hemophilic arthropathy in order to identify potential targets for therapy...
November 24, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27879229/the-incidence-of-ototoxicity-in-patients-using-iron-chelators
#12
Serhan Derin, Fatih Mehmet Azık, Yaşar Topal, Hatice Topal, Volkan Karakuş, Petek Uzay Çetinkaya, Murat Şahan, Tansel Erdem Azık, Can Naci Kocabaş
OBJECTIVE: In this study, we aimed to detect the incidences of ototoxicity in patients with hemoglobinopathies taking deferoxamine (DFO), deferiprone, and deferasirox using the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) scale to obtain more objective data. MATERIALS AND METHODS: Fifty-five transfusion-dependent patients were evaluated in this study. The NCI CTCAE scale was used to assess ototoxicity levels. The average ferritin and hemoglobin levels, the type of iron chelator, and the duration of therapy of all the patients were recorded...
November 23, 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27872646/mercury-vapour-long-lasting-exposure-lymphocyte-muscarinic-receptors-as-neurochemical-markers-of-accidental-intoxication
#13
E Roda, A Giampreti, S Vecchio, P Apostoli, T Coccini
Introduction. Chronic poisoning may result in home setting after mercury (Hg) vapours inhalation from damaged devices. We report a chronic, nonoccupational Hg poisoning due to 10-year indoor exposure to mercury spillage. Case Report. A 72-year-old man with polyneuropathy of suspected toxic origin. At hospitalization, toxicological clinical evaluations confirmed the altered neurological picture documented across the last decade. Periodic blood and urine Hg levels (BHg, UHg) monitoring were performed from admission (t0), until 1 year later (t2), paralleled by blood neurochemical markers assessment, that is, lymphocytes muscarinic receptors (l-MRs)...
2016: Case Reports in Medicine
https://www.readbyqxmd.com/read/27863114/zinc-complexes-of-cyclodextrin-bearing-8-hydroxyquinoline-ligands-a-comparative-study
#14
Valentina Oliveri, Adriana Pietropaolo, Carmelo Sgarlata, Graziella Vecchio
The mounting evidence supporting the role of metal ions in several diseases has turned metal-ion chelation therapy into a promising treatment strategy. The design of efficient metal-binding ligands requires in-depth knowledge of molecular structure and stability constants of the complexes formed. This paper presents an extensive overview on the stability of zinc(II) and copper(II) complexes of a series of cyclodextrin-8-hydroxyquinoline conjugates. In order to explain the differences observed in the conditional stability constants between the metal complexes of the 6-functionalized and 3-functionalized cyclodextrin isomers, conformational analysis and DFT simulations were also performed...
November 10, 2016: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/27859648/limitations-of-serum-ferritin-to-predict-liver-iron-concentration-responses-to-deferasirox-therapy-in-patients-with-transfusion-dependent-thalassemia
#15
John B Porter, Mohsen Elalfy, Ali Taher, Yesim Aydinok, Szu-Hee Lee, Pranee Sutcharitchan, Ali El-Ali, Jackie Han, Amal El-Beshlawy
BACKGROUND: In transfusion-dependent anaemias, while absolute serum ferritin levels broadly correlate with liver iron concentration (LIC), relationships between trends in these variables are unclear. These relationships are important because serum ferritin changes are often used to adjust or switch chelation regimens when liver magnetic resonance imaging (MRI) is unavailable. OBJECTIVES AND METHODS: This post-hoc analysis of the EPIC study compared serum ferritin and LIC in 317 patients with transfusion-dependent thalassaemia before and after 1 year of deferasirox...
November 17, 2016: European Journal of Haematology
https://www.readbyqxmd.com/read/27858849/mercury-poisoning-caused-by-chinese-folk-prescription-cfp-a-case-report-and-analysis-of-both-cfp-and-quackery
#16
Tingting Mo, Si Sun, Yongyi Wang, Dong Luo, Bin Peng, Yinyin Xia
BACKGROUND: Though as a heavy metal, mercury has a long history in the culture of traditional Chinese medicine (TCM). Also until now, we can still find evidence of mercury in some Chinese folk prescriptions (CFP)s in China. CASE: We report a case of a 35-year-old rural woman, who took almost 35 g of Hg2O orally to treat her itchy skin followed a folk prescription of an unlicensed practitioners engaging in quackery (UPEQ), which lead to dark red bloody stool and mucus, nausea, and numbness...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27855492/sodium-ascorbate-kills-candida-albicans-in-vitro-via-iron-catalyzed-fenton-reaction-importance-of-oxygenation-and-metabolism
#17
Pinar Avci, Fernanda Freire, Andras Banvolgyi, Eleftherios Mylonakis, Norbert M Wikonkal, Michael R Hamblin
AIM: Ascorbate can inhibit growth and even decrease viability of various microbial species including Candida albicans. However the optimum conditions and the mechanism of action are unclear. Materials/methodology: Candida albicans shaken for 90 min in a buffered solution of ascorbate (90 mM) gave a 5-log reduction of cell viability, while there was no killing without shaking, in growth media with different carbon sources or at 4°C. Killing was inhibited by the iron chelator 2,2'-bipyridyl...
November 18, 2016: Future Microbiology
https://www.readbyqxmd.com/read/27853501/evaluation-of-iron-deposition-in-the-adrenal-glands-of-%C3%AE-thalassemia-major-patients-using-3-tesla-mri
#18
Tevfik Guzelbey, Bengi Gurses, Erman Ozturk, Olcay Ozveren, Aysegul Sarsilmaz, Ebru Karasu
BACKGROUND: Beta-thalassemia major (β-TM) patients need blood transfusions, which result in iron deposition. To regulate chelation therapy, iron load has to be measured. With MRI, the amount of signal loss and T2* decay time shortening are used for iron quantification. OBJECTIVES: The aim was to measure adrenal iron load with T2* relaxometry using MRI, and to compare it with liver and cardiac iron and serum ferritin, and to find out whether adrenal iron could be predicted from those parameters...
July 2016: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
https://www.readbyqxmd.com/read/27848180/iron-overload-patients-with-unknown-etiology-from-national-survey-in-japan
#19
Katsuya Ikuta, Mayumi Hatayama, Lynda Addo, Yasumichi Toki, Katsunori Sasaki, Yasuaki Tatsumi, Ai Hattori, Ayako Kato, Koichi Kato, Hisao Hayashi, Takahiro Suzuki, Masayoshi Kobune, Miyuki Tsutsui, Akihiko Gotoh, Yasuo Aota, Motoo Matsuura, Yuzuru Hamada, Takahiro Tokuda, Norio Komatsu, Yutaka Kohgo
Transfusion is believed to be the main cause of iron overload in Japan. A nationwide survey on post-transfusional iron overload subsequently led to the establishment of guidelines for iron chelation therapy in this country. To date, however, detailed clinical information on the entire iron overload population in Japan has not been fully investigated. In the present study, we obtained and studied detailed clinical information on the iron overload patient population in Japan. Of 1109 iron overload cases, 93.1% were considered to have occurred post-transfusion...
November 15, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27843752/thalassemia-major-how-do-we-improve-quality-of-life
#20
Nonita Dhirar, Jyoti Khandekar, Damodar Bachani, Deonath Mahto
BACKGROUND: Thalassemia Major is a preventable genetic disorder characterized by abnormal hemoglobin synthesis and lifelong blood transfusions. The children suffering from Thalassemia Major have poor quality of life. This study was conducted to assess the factors influencing quality of life of these children and how it can be improved. METHODS: A descriptive cross sectional study was conducted in 2014 at Thalassemia Day Care Centre of a tertiary level children's hospital in Delhi, to assess quality of life of children suffering from Thalassemia Major...
2016: SpringerPlus
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