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https://www.readbyqxmd.com/read/29149650/iron-chelation-therapy-in-lower-ipss-risk-myelodysplastic-syndromes-which-subtypes-benefit
#1
Shannon A Wong, Heather A Leitch
BACKGROUND: Analyses suggest MDS patients with higher serum ferritin levels (SF) have inferior overall survival (OS), in one study across MDS subtypes. Multiple analyses suggest those with high SF receiving iron chelation therapy (ICT) have superior OS, but which MDS subtypes benefit from ICT remains undefined. METHODS: We performed survival analyses of MDS subtypes by receipt of ICT. RESULTS: 182 MDS were lower IPSS risk and received red blood cell (RBC) transfusions; 63 received ICT...
November 11, 2017: Leukemia Research
https://www.readbyqxmd.com/read/29148726/a-novel-approach-for-99mtc-labeling-of-red-blood-cells-evaluation-of-99mtc-4saboroxime-as-a-blood-pool-imaging-agent
#2
Min Liu, Zuoquan Zhao, Wei Fang, Shuang Liu
Angiography with radiolabeled red blood cells (RBCs) plays an important role in diagnosis and prognosis in vascular diseases. Both in vitro and in vivo methods have been developed for 99mTc-labeling of RBCs. However, these methods are complicated and lack of reproducibility. Therefore, it is highly desirable to develop an alternative method for routine 99mTc-labeling of RBCs. In this report, we present a novel approach for 99mTc-labeling of RBCs. We prepared a new 99mTc(III) radiotracer [99mTcCl(CDO)(CDOH)2B-4AS] (99mTc-4ASboroxime: 4AS-B(OH)2 = 4-aminosulfonylphenyl)boronic acid, and CDOH2 = cyclohexanedione dioxime) in >95% radiochemical purity...
November 17, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29145790/innate-immunity-in-cardiac-myxomas-and-its-pathological-and-clinical-correlations
#3
Anna Di Vito, Gianluca Santise, Chiara Mignogna, Eusebio Chiefari, Gabriella Cardillo, Ivan Presta, Franco Arturi, Natalia Malara, Francesco Brunetti, Annalidia Donato, Domenico Maisano, Stefania Leonetti, Daniele Maselli, Tullio Barni, Giuseppe Donato
Cardiac myxomas are the most common benign cardiac tumor. We investigated the immunohistochemical properties of 11 surgically excised cardiac myxomas, in order to analyze the correlation between macrophages and mast cell populations and clinical parameters. CD68(+)/CD163(-)/iNOS(-) (M0) cells represent the most abundant macrophage phenotype; however, CD68(+)/CD163(+) cells (M2) were also frequent. CD68(+)/iNOS(+) (M1) elements were rare. Mast cells, defined as a population of c-kit (CD117)(+) and/or tryptase(+) cells were also detected...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/29145693/early-erythropoiesis-stimulating-agents-in-preterm-or-low-birth-weight-infants
#4
REVIEW
Arne Ohlsson, Sanjay M Aher
BACKGROUND: Preterm infants have low plasma levels of erythropoietin (EPO), providing a rationale for the use of erythropoiesis-stimulating agents (ESAs) to prevent or treat anaemia and to provide neuro protection and protection against necrotising enterocolitis (NEC). Darbepoetin (Darbe) and EPO are currently available ESAs. OBJECTIVES: To assess the effectiveness and safety of ESAs (erythropoietin (EPO) and/or Darbe) initiated early (before eight days after birth) compared with placebo or no intervention in reducing red blood cell (RBC) transfusions, adverse neurological outcomes, and feeding intolerance including necrotising enterocolitis (NEC) in preterm and/or low birth weight infants...
November 16, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29145599/a-role-for-thiopurine-metabolites-in-the-synergism-between-thiopurines-and-infliximab-in-inflammatory-bowel-disease
#5
Ditte V Mogensen, Jørn Brynskov, Mark A Ainsworth, Jacob Nersting, Kjeld Schmiegelow, Casper Steenholdt
Background: Interactions between principal cytotoxic thiopurine metabolites, 6-thioguanine nucleotides (6-TGN), and infliximab (IFX) and anti-IFX antibodies (Abs) may contribute to higher effectiveness of IFX-thiopurine-combination therapy than monotherapies in inflammatory bowel disease. Methods: To examine if thiopurine metabolites influenced trough IFX and anti-IFX Abs, 89 patients previously assessed for anti-IFX Abs were included. To assess if IFX influenced thiopurine metabolites, 8 patients having responded to 12 weeks of intensified IFX at a constant thiopurine dosing were included...
November 14, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29143777/margination-of-fluorescent-polylactic-acid-polyaspartamide-based-nanoparticles-in-microcapillaries-in-vitro-the-effect-of-hematocrit-and-pressure
#6
Emanuela Fabiola Craparo, Rosa D'Apolito, Gaetano Giammona, Gennara Cavallaro, Giovanna Tomaiuolo
The last decade has seen the emergence of vascular-targeted drug delivery systems as a promising approach for the treatment of many diseases, such as cardiovascular diseases and cancer. In this field, one of the major challenges is carrier margination propensity (i.e., particle migration from blood flow to vessel walls); indeed, binding of these particles to targeted cells and tissues is only possible if there is direct carrier-wall interaction. Here, a microfluidic system mimicking the hydrodynamic conditions of human microcirculation in vitro is used to investigate the effect of red blood cells (RBCs) on a carrier margination in relation to RBC concentration (hematocrit) and pressure drop...
October 28, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29143484/response-of-red-blood-cell-folate-to-supplementation-in-non-pregnant-women-is-predictable-a-proposal-for-personalized-supplementation
#7
Rima Obeid, Christiane Schön, Manfred Wilhelm, Rajiv P Shrestha, Stefan Pilz, Klaus Pietrzik
SCOPE: We modelled red blood cell (RBC)-folate response to supplementation and developed personalized folate supplementation concepts. METHODS AND RESULTS: The changes of RBC-folate were modelled in a time- (4 or 8 weeks) and dose- (400 μg/d or 800 μg/d folate) dependent manner. Post-supplementation RBC-folate levels were predicted from folate-loading capacities [ = measured RBC-folate - (baseline RBC-folate * RBC-survival)]. The prediction equations were validated in 119 participants...
November 15, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29143311/interleukin-12-and-its-procoagulant-effect-on-erythrocytes-platelets-and-fibrin-ogen-the-lesser-known-side-of-inflammation
#8
Martin J Page, Janette Bester, Etheresia Pretorius
Inflammation, with its associated inflammatory molecules, is integral to most chronic diseases, including the various cardiovascular diseases. Interleukin 12 (IL12) is one of the inflammatory cytokines that is upregulated during inflammation; however, we know very little about its exact effect on red blood cells (RBCs), platelets and fibrin(ogen). IL12 is an important pleiotropic cytokine in early inflammatory responses and has potent immunomodulatory, antitumour and anti-infection activity. Here we investigate how low levels of circulating IL12, comparable to levels found during chronic inflammation, affect coagulation parameters, platelets and RBCs...
November 16, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/29142420/exploring-the-cytotoxic-potential-of-triterpenoids-enriched-fraction-of-bacopa-monnieri-by-implementing-in-vitro-in-vivo-and-in-silico-approaches
#9
Md Nasar Mallick, Washim Khan, Rabea Parveen, Sayeed Ahmad, Sadaf, Mohammad Zeeshan Najm, Istaq Ahmad, Syed Akhtar Husain
Background: Bacopa monnieri (BM) is a herbaceous plant traditionally used from time immemorial in Ayurvedic and folklore medicines. We hypothesized that the extract of the whole plant might contain numerous molecules with having antitumor activities that could be very effective in killing of human cancer cells. Objectives: This work investigated anticancer activity of bioactive fraction of BM. Materials and Methods: The hydroalcoholic extract of BM was fractionated with different solvent, namely, hexane, dichloromethane (DCM), acetone, methanol, and water...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29142415/are-polyunsaturated-fatty-acid-metabolites-the-protective-effect-of-4-hydroxytyrosol-on-human-red-blood-cell-membranes-and-oxidative-damage-4-hydroxyalkenals-compatible-in-hypertriglyceridemic-patients
#10
Giuseppe Gallo, Rosalinda Bruno, Adele Taranto, Guglielmo Martino
Background: Increased levels of malondialdehyde (MDA) and 4-hydroxynonenal (HNE) are demonstrated in plasma of uremic patients. A study showed that the comparison of erythrocytes of healthy and diseased patients (obese, hypertensive, and Type 2 diabetics) with age is associated to a disturbed oxidant/antioxidant balance when obesity is associated with hypertension. 4-hydroxytyrosol is shown to significantly protect red blood cells (RBCs) from oxidative damage (4-HNE). In literature, there are partial discussions on the role of lipids and their oxidation products...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29139138/folate-status-in-women-of-reproductive-age-as-basis-of-neural-tube-defect-risk-assessment
#11
Lynn B Bailey, Dorothy B Hausman
Reliable folate status data for women of reproductive age (WRA) to assess global risk for neural tube defects (NTDs) are needed. We focus on a recent recommendation by the World Health Organization that a specific "optimal" red blood cell (RBC) folate concentration be used as the sole indicator of NTD risk within a population and discuss how to best apply this guidance to reach the goal of assessing NTD risk globally. We also emphasize the importance of using the microbiologic assay (MBA) as the most reliable assay for obtaining comparable results for RBC folate concentration across time and countries, the need for harmonization of the MBA through use of consistent key reagents and procedures within laboratories, and the requirement to apply assay-matched cutoffs for folate deficiency and insufficiency...
November 15, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29138283/frequency-of-and-reasons-for-paroxysmal-nocturnal-haemoglobinuria-screening-in-patients-with-unexplained-anaemia
#12
James T England, Bakul Dalal, Heather A Leitch
Referral to hematology for anemia is common. In paroxysmal nocturnal hemoglobinuria (PNH), cells deficient in the glycosylphosphatidyl inositol (GPI) anchor are lysed by complement. Eculizumab improves overall survival and quality of life while reducing hemolysis, transfusion requirements, and thrombosis. We evaluated the frequency of screening for PNH in patients with unexplained anemia. Key clinical features, laboratory data, and investigations were recorded for patients referred for anemia since 2010, without a specific cause found...
November 14, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29137368/the-protective-effects-of-carboxyhemoglobin-during-the-resuscitation-from-hemorrhagic-shock-in-rats
#13
Hongyu Liu, Songyan Yu, Yaojun Peng, Xin Chang, Xinguang Yu
Aim: This study was aimed to explore the effects of carboxyhemoglobin on reperfusion injury in hemorrhagic shock, as well as its action time and related mechanisms. Results: CO-RBC group showed milder oxidative injury than O2-RBC group. CO reperfusion did not show advantages in functions of kidney and lung during resuscitation. The level of Bax was decreased in CO-RBC group, especially in early CO-RBC group. Moreover, the autophay-related gene Beclin-1 was down-regulated in CO-RBC and early CO-RBC groups...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29134976/uptake-of-zinc-by-pteridium-aquilinum-bracken-fern-and-response-of-clarias-gariepinus-juveniles-during-chronic-and-sub-lethal-exposure
#14
F E Olaifa, A A Fabusoro
Zinc is an essential trace element but can be toxic to fish at elevated concentrations. This study was carried out to assess the uptake of zinc by Clarias gariepinus juveniles and Pteridium aquilinum during chronic exposure to sub lethal concentrations. Two experiments were undertaken simultaneously in static renewal bioassays for 28 days.Haematology, histology, zinc accumulation in tissues of C.gariepinus and P. aquilinum were recorded fortnightly. Packed Cell Volume, haemoglobin concentration, Red Blood Cells, White blood cells, Lymphocytes, Neutrophils, Mean Corpuscular Volume, Mean Corpuscular Haemoglobin Concentration and Mean Corpuscular Haemoglobin of C...
June 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
https://www.readbyqxmd.com/read/29134668/factors-affecting-patient-reported-outcomes-after-red-blood-cell-transfusion-in-medical-patients
#15
Ka Lok Luke Chan, Wai Man Vivien Mak, Yat Hung Tam, Kwok Kuen Harold Lee
BACKGROUND: Physical variables like mortality or cardiac events were used to evaluate the requirement of red blood cell (RBC) transfusion. However, patient-reported outcomes (PROs) of blood transfusion recipients were seldom assessed. The health-related quality of life (HRQoL) of patients before and after RBC transfusion was compared in this study. STUDY DESIGN AND METHODS: The study period was February to June 2016. Standardized generic and anemia symptom-specific HRQoL instruments were administered to patients receiving RBC transfusion in the medical unit of a single center...
November 13, 2017: Transfusion
https://www.readbyqxmd.com/read/29133350/extracellular-histones-induce-erythrocyte-fragility-and-anemia
#16
Farzaneh Kordbacheh, Connor H O'Meara, Lucy A Coupland, Patrick M Lelliott, Christopher R Parish
Extracellular histones have been shown to play an important pathogenic role in many diseases, primarily through their cytotoxicity towards nucleated cells and their ability to promote platelet activation with resultant thrombosis and thrombocytopenia. In contrast, little is known about the effect of extracellular histones on erythrocyte function. We demonstrate here that histones promote erythrocyte aggregation, sedimentation and, using a novel in vitro shear stress model, induce erythrocyte fragility and lysis in a concentration dependent manner...
November 13, 2017: Blood
https://www.readbyqxmd.com/read/29133160/the-changes-of-red-blood-cell-viscoelasticity-and-sports-anemia-in-male-24-hr-ultra-marathoners
#17
Che-Hung Liu, Yen-Fang Tseng, Jiun-I Lai, Yin-Quan Chen, Shih-Hao Wang, Wei-Fong Kao, Li-Hua Li, Yu-Hui Chiu, Chorng-Kuang How, Wen-Han Chang
BACKGROUND: In endurance sports, stress, dehydration and release of chemical factors have been associated with red blood cell (RBC) alterations of structure and function, which may contribute to sports anemia, a well-observed phenomenon during long-distance running. Until now, the investigation of the changes of viscoelastic properties of RBC membrane, a decisive factor of RBC deformability to avoid hemolysis, is lacking, especially in an Oriental population. METHODS: nineteen runners were prospectively recruited into our study...
November 10, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29133139/methemoglobin-reductase-activity-in-intact-fish-red-blood-cells
#18
Frank B Jensen, Karsten Nielsen
Red blood cells (RBCs) possess methemoglobin reductase activity that counters the ongoing oxidation of hemoglobin (Hb) to methemoglobin (metHb), which in circulating blood is caused by Hb autoxidation or reactions with nitrite. We describe an assay for determining metHb reductase activity in intact RBCs in physiological saline at normal Pco2 and pH. After initial loading of oxygenated RBCs with nitrite (partly oxidizing Hb to metHb), the nitrite is removed by three washes of the RBCs in nitrite-free physiological saline to enable the detection of RBC metHb reductase activity in the absence of counteracting oxidation...
November 10, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29131606/first-chemical-characterization-of-refractory-black-carbon-aerosols-and-associated-coatings-over-the-tibetan-plateau-4730-m-a-s-l
#19
Junfeng Wang, Qi Zhang, Min-Dong Chen, Sonya Collier, Shan Zhou, Xinlei Ge, Jianzhong Xu, Jinsen Shi, Conghui Xie, Jianlin Hu, Shun Ge, Yele Sun, Hugh Coe
Refractory black carbon (rBC) aerosol is an important climate forcer, and its impacts are greatly influenced by the species associated with rBC cores. However, relevant knowledge is particularly lacking at the Tibetan Plateau (TP). Here we report, for the first time, highly time-resolved measurement results of rBC and its coating species in central TP (4730 m a.s.l), by using an Aerodyne soot particle aerosol mass spectrometer (SP-AMS), which selectively measured rBC-containing particles. We found that the rBC was overall thickly coated with an average mass ratio of coating to rBC (RBC) of ~7...
November 13, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29131592/a-paper-plastic-hybrid-microfluidic-device-for-smartphone-based-colorimetric-analysis-of-urine
#20
M Jalal Uddin, Gyeong Jun Jin, Joon Sub Shim
In this work, a disposable paper-plastic hybrid microfluidic lab-on-a-chip (LOC) has been developed and successfully applied for the colorimetric measurement of urine by the smartphone-based optical platform using an "UrineAnalysis" Android app. The developed device was cost-effectively implemented as a stand-alone hybrid LOC by incorporating the paper-based conventional reagent test strip inside the plastic-based LOC microchannel. The LOC device quantitatively investigated the small volume (40 µL) of urine analytes for the colorimetric reaction of glucose, protein, pH and red blood cell (RBC) in integration with the finger-actuating micro pump...
November 13, 2017: Analytical Chemistry
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