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https://www.readbyqxmd.com/read/28719864/in-vivo-magnetic-resonance-imaging-of-pancreatic-tumors-using-iron-oxide-nanoworms-targeted-with-ptr86-peptide
#1
Yasaman Ahmadi, Genady Kostenich, Mor Oron-Herman, Wolfgang Wadsak, Markus Mitterhauser, Arie Orenstein, Siroos Mirzaei, Peter Knoll
To cut the high mortality rate of malignant disease such as pancreatic cancer, development of newly diagnostic probes for early stage detection of tumor lesions is required. Multimodal imaging nanoprobes allowing targeted and real time functional/anatomical imaging of tumors meet the demands. For this purpose, a MRI/optical dual-modality probe based on biodegradable magnetic iron oxide nanoworms has been developed. The cross-linked surface of nanoworms were anchored to fluorescent dyes and to FITC.PTR86; a novel synthetic peptide with high affinity towards somatostatin receptors...
July 6, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28719818/insights-into-the-unique-functionality-of-inorganic-micro-nanoparticles-for-versatile-ultrasound-theranostics
#2
REVIEW
Xiaoqin Qian, Xiaoxia Han, Yu Chen
The clinical ultrasound (US)-based theranostic biomedicine suffers from the critical issue that traditional microbubbles (MBs) have lots of drawbacks such as low stability, large particle size, difficult structural control, etc. The unique composition, structure and functionality of inorganic micro/nanoplatforms have shown their great prospect for solving these critical issues and drawbacks of traditional organic MBs. This review summarizes and discusses the state-of-art development on exploring inorganic micro/nanoparticles for versatile US-based biomedical applications, ranging from US imaging, photoacoustic imaging, sonodynamic therapy, high intensity-focused US ablation and US-triggered chemotherapy...
July 11, 2017: Biomaterials
https://www.readbyqxmd.com/read/28719745/highly-efficient-water-decontamination-by-using-sub-10-nm-feooh-confined-within-millimeter-sized-mesoporous-polystyrene-beads
#3
Xiaolin Zhang, Cheng Cheng, Jieshu Qian, Zhenda Lu, Siyuan Pan, Bing-Cai Pan
Millimeter-sized polymer-based FeOOH nanoparticles (NPs) provide a promising option to overcome the bottlenecks of direct use of NPs in scaled-up water purification, and decreasing the NP size below 10 nm is expected to improve the decontamination efficiency of the polymeric nanocomposites due to the size and surface effect. However, it is still challenging to control the dwelled FeOOH NP sizes to sub-10 nm, mainly due to the wide pore size distribution of the currently available polymeric hosts. Herein, we synthesized mesoporous polystyrene beads (MesoPS) via flash freezing to assemble FeOOH NPs...
July 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28719386/is-there-a-standard-of-care-for-transfusion-therapy-in-thalassemia
#4
Massimo Franchini, Gian L Forni, Giancarlo M Liumbruno
PURPOSE OF REVIEW: Thalassemia is the most common form of inherited anemia, characterized by variable clinical phenotypes. The purpose of this review is to summarize the transfusion support in thalassemia patients and the management of transfusion-related iron overload. RECENT FINDINGS: The most recent evidence on transfusion strategy and iron chelation therapy in thalassemia arising from clinical trials as well as from recommendation guidelines are critically discussed...
July 14, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28719364/is-there-a-link-between-self-perceived-stress-and-physical-activity-levels-in-scottish-adolescents
#5
Joe Cowley, John Kiely, Dave Collins
Purpose Accumulating life stress is a driving factor underlying the most pervasive, incapacitating health conditions in 21st century, First World societies. The most widely supported strategy, for remediating the negative health consequences of elevated life stress, is physical activity (PA). Evidence also suggests accumulating life stress impedes PA uptake. Thus, ironically, persistently elevated life stress not only negatively impacts multiple dimensions of health, simultaneously it may also reduce likelihood of participation in the most effective remediating strategy, PA...
July 18, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28719337/determination-of-some-heavy-metals-in-mastacembelus-mastacembelus-banks-solander-1794-in-terms-of-public-health
#6
M Eroğlu, M Düşükcan, Ö Canpolat, M Çalta, D Şen
In this study, the accumulation of some heavy metals in spiny eel (Mastacembelus mastacembelus Banks and Solander, 1794) living in Karakaya Dam Lake was determined and human health risk of this fish when consumed as food was examined. For this purpose, the amounts of copper (Cu), chromium (Cr), cadmium(Cd), iron (Fe), zinc (Zn) in water samples and in the muscle tissues of the fishes were determined. The amounts of heavy metals showed differences in the muscle tissues of Mastacembelus mastacembelus according to weight, length, sex and age groups of fish...
May 20, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28719049/pulmonary-vein-stenosis-in-patients-with-smith-lemli-opitz-syndrome
#7
Aaron R Prosnitz, Jane Leopold, Mira Irons, Kathy Jenkins, Amy E Roberts
OBJECTIVE: To describe a group of children with co-incident pulmonary vein stenosis and Smith-Lemli-Opitz syndrome and to generate hypotheses as to the shared pathogenesis of these disorders. DESIGN: Retrospective case series. PATIENTS: Five subjects in a pulmonary vein stenosis cohort of 170 subjects were diagnosed with Smith-Lemli-Opitz syndrome soon after birth. RESULTS: All five cases were diagnosed with Smith-Lemli-Opitz syndrome within 6 weeks of life, with no family history of either disorder...
July 18, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28718824/associations-between-red-meat-intakes-and-the-micronutrient-intake-and-status-of-uk-females-a-secondary-analysis-of-the-uk-national-diet-and-nutrition-survey
#8
Emma Derbyshire
Blanket health messages to lower red meat intakes are being communicated at present. These could have adverse implications on the micronutrient quality of women's diets. The current paper evaluates the nutritional impact of lower red meat intakes on British women's micronutrient intakes and status. A secondary analysis of the UK National Diet and Nutrition Survey was undertaken using data from years 2008/2009 to 2011/2012. This was comprised of dietary and blood analyte data from 1384 and 641 females aged 11 to 64 years...
July 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28718696/tumor-induced-disorder-of-iron-metabolism-in-major-organs-a-new-insight-from-chemical-speciation-of-iron
#9
Rujie Chen, Guangcun Chen
Objective To investigate the evolution of iron speciation in major organs of tumor-bearing mice and its role in cancer formation and cancer-associated complications. Methods The concentration and chemical speciation of iron in the spleen, liver, lung, kidney, heart, blood, muscle, and tumor tissue of healthy mice and tumor-bearing mice were studied by synchrotron radiation-based total reflection X-ray fluorescence spectrometry (SR-TXRF) coupled with X-ray absorption spectroscopy (XAS). Results The TXRF and XAS results showed that the iron content, especially the ferritin content, significantly decreased in the blood and spleen but significantly increased in the liver, lung, and muscle of mice after tumor implantation...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28718587/-drugs-induced-osteopathies
#10
Bérengère Aubry-Rozier
Drug induced bone diseases concerns : induced osteoporosis, induced osteomalacia (by loss of calcium, phosphate or vitamin D) and induced sarcopenia. Some of these drugs are well known, such as anti-hormones, corticotherapy (which could induce all of osteoporosis, osteomalacia and sarcopenia). In the present article, we will focus on 3 others less known but frequently used drugs : iron replacement, proton pump inhibitors therapy, and serotonin reuptake inhibitor antidepressants treatment. For each of them we will discuss the pathophysiological mechanism leading to bone fragility as well as the recommendations of prevention / management to be proposed in case of absolute necessity of the treatment...
March 8, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28718470/co2-activation-and-dissociation-on-the-low-miller-index-surfaces-of-pure-and-ni-coated-iron-metal-a-dft-study
#11
Caroline R Kwawu, Richard Tia, Evans Adei, Nelson Y Dzade, C Richard A Catlow, Nora H de Leeuw
We have used spin polarized density functional theory calculations to perform extensive mechanistic studies of CO2 dissociation into CO and O on the clean Fe(100), (110) and (111) surfaces and on the same surfaces coated by a monolayer of nickel. CO2 chemisorbs on all three bare facets and binds more strongly to the stepped (111) surface than on the open flat (100) and close-packed (110) surfaces, with adsorption energies of -88.7 kJ mol(-1), -70.8 kJ mol(-1) and -116.8 kJ mol(-1) on the (100), (110) and (111) facets, respectively...
July 18, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28718291/porous-structured-ni-fe-p-nanocubes-derived-from-prussian-blue-analogue-as-electrocatalyst-for-efficient-overall-water-splitting
#12
Cuijuan Xuan, Jie Wang, Weiwei Xia, Zongkai Peng, Zexing Wu, Wen Lei, Kedong Xia, Huolin L Xin, Deli Wang
Exploring non-precious metal electrocatalysts to replace the noble metal based catalysts for full water electrocatalysis is still an ongoing challenge. In this work, porous structured ternary nickel-iron-phosphides (Ni-Fe-P) nanocubes were synthesized through one-step phosphidation of Ni-Fe based Prussian blue analogue. The Ni-Fe-P nanocubes exhibit rough and loose porous structure on the surface under suitable phosphating temperature, which is favorable for the mass transfer and oxygen diffusion during electrocatalysis process...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28718256/iron-deficiency-anaemia-as-risk-factor-for-simple-febrile-seizures-a-case-control-study
#13
Khawaja Tahir Aziz, Naheem Ahmed, Abdul Ghaffar Nagi
BACKGROUND: Febrile fits is common problem in children. Among other risk factors, iron deficiency anaemia is considered as aggravating factor for febrile fits. Iron deficiency anaemia is preventable and treatable disease. The objective of the study was to find out iron deficiency anaemia as risk factor for febrile fits. METHODS: It was a case control study. Thirty cases of febrile fits were recorded. Control group of 30 cases was taken at the same time with same variables but without febrile fits...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28718091/nutritional-and-micronutrient-care-of-bariatric-surgery-patients-current-evidence-update
#14
REVIEW
Michael A Via, Jeffrey I Mechanick
PURPOSE OF REVIEW: The continued success of bariatric surgery to treat obesity and obesity-associated metabolic conditions creates a need for a strong understanding of clinical nutrition both before and after these procedures. RECENT FINDINGS: Surgically induced alteration of gastrointestinal physiology can affect the nutrition of individuals, especially among those who have undergone malabsorptive procedures. While uncommon, a subset of patients may develop protein-calorie malnutrition...
July 17, 2017: Current Obesity Reports
https://www.readbyqxmd.com/read/28717990/iron-based-phosphate-binders-a-paradigm-shift-in-the-treatment-of-hyperphosphatemic-anemic-ckd-patients
#15
REVIEW
Francesco Locatelli, Lucia Del Vecchio
The partial correction of anemia and the normalization of phosphate and blood pressure are the mainstay of treatment of patients with chronic kidney disease (CKD). Available anti-hypertensive drugs, erythropoiesis stimulating agents (ESAs) and iron supplements have resolved quite satisfactorily the goal of controlling hypertension and partially correcting anemia. Unfortunately, the treatment of hyperphosphatemia is still far from resolved. Phosphate binders have poor tolerability and/or limited efficacy, leading to the prescription of many tablets that achieve only a mild-to-moderate effect...
July 17, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28717590/construction-of-a-fur-null-mutant-and-rna-sequencing-provide-deeper-global-understanding-of-the-aliivibrio-salmonicida-fur-regulon
#16
Sunniva Katharina Thode, Cecilie Bækkedal, Jenny Johansson Söderberg, Erik Hjerde, Hilde Hansen, Peik Haugen
BACKGROUND: The ferric uptake regulator (Fur) is a transcription factor and the main regulator of iron acquisition in prokaryotes. When bound to ferric iron, Fur recognizes its DNA binding site and generally executes its function by repressing transcription of its target genes. Due to its importance in virulence, the Fur regulon is well studied for several model bacteria. In our previous work, we used computational predictions and microarray to gain insights into Fur-regulation in Aliivibrio salmonicida, and have identified a number of genes and operons that appear to be under direct control of Fur...
2017: PeerJ
https://www.readbyqxmd.com/read/28717516/costs-associated-with-intravenous-darbepoetin-versus-epoetin-therapy-in-hemodialysis-patients-a-randomized-controlled-trial
#17
Andrea L Woodland, Sean W Murphy, Bryan M Curtis, Brendan J Barrett
BACKGROUND: Anemia of chronic kidney disease is associated with adverse outcomes and a reduced quality of life. Erythropoiesis-stimulating agents (ESAs) have improved anemia management, and 2 agents are available in Canada, epoetin alfa (EPO) and darbepoetin alfa (DA). EPO and DA are considered equally effective in achieving target hemoglobin (Hb), but it is not clear whether there is a cost difference. There have been few head-to-head comparisons; most published studies are observational switch studies...
2017: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/28717421/isolation-of-membrane-vesicles-from-prokaryotes-a-technical-and-biological-comparison-reveals-heterogeneity
#18
Priscila Dauros Singorenko, Vanessa Chang, Alana Whitcombe, Denis Simonov, Jiwon Hong, Anthony Phillips, Simon Swift, Cherie Blenkiron
Prokaryotes release membrane vesicles (MVs) with direct roles in disease pathogenesis. MVs are heterogeneous when isolated from bacterial cultures so Density Gradient Centrifugation (DGC) is valuable for separation of MV subgroups from contaminating material. Here we report the technical variability and natural biological heterogeneity seen between DGC preparations of MVs for Mycobacterium smegmatis and Escherichia coli and compare these DGC data with size exclusion chromatography (SEC) columns. Crude preparations of MVs, isolated from cultures by ultrafiltration and ultracentrifugation were separated by DGC with fractions manually collected as guided by visible bands...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28716637/update-on-the-management-of-abnormal-uterine-bleeding
#19
Yael Levy-Zauberman, Anne-Gaëlle Pourcelot, Perrine Capmas, Hervé Fernandez
Abnormal uterine bleeding (AUB) is a common complaint that affects large numbers of women from puberty to menopause. It negatively affects health by causing anemia, and impacts the quality of life of women affected. AUB also has an economic impact for both women and society. Therefore, it should not be under- or overestimate and diagnosis, investigations and treatment should be proposed, taking into account the scientific data available in the current state of medical knowledge. Using the new terminology and etiologic classification of AUB is essential to communicate properly around the subject...
July 14, 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28716262/new-genetic-causes-for-complex-hereditary-spastic-paraplegia
#20
Paulo Victor Sgobbi de Souza, Thiago Bortholin, Renan Braido Dias, Marco Antônio Troccoli Chieia, Stênio Burlin, Fernando George Monteiro Naylor, Wladimir Bocca Vieira de Rezende Pinto, Acary Souza Bulle Oliveira
INTRODUCTION: Hereditary Spastic Paraplegia (HSP) represents a complex and heterogeneous group of rare neurodegenerative disorders that share a common clinical feature of weakness and lower limb spasticity that can occur alone or in combination with a constellation of other neurological or systemic signs and symptoms. Although the core clinical feature of weakness and lower limb spasticity is virtually universal, the genetic heterogeneity is almost uncountable with more than 70 genetic forms described so far...
August 15, 2017: Journal of the Neurological Sciences
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