Read by QxMD icon Read


Alfonso González-Noriega, Colette Michalak, Rafael Cervantes-Roldán, Vania Gómez-Romero, Alfonso León-Del-Río
Annexin A6 is a multicompetent, multifunctional protein involved in several biological processes within and outside of the cell. Whereas HeLa cells express annexin A6 only as a 68/67-kDa doublet, indicating alternative splicing (Smith PD et al. (1994) Proc Natl Acad Sci USA 91, 2713-2717), the GMO2784 human fibroblast cell line expresses two additional isoforms at 64 and 58kDa. In both cell lines, annexin A6 is located intracellularly and on the plasma membrane. In vitro eukaryotic protein synthesis of pIRESneoAnxA6 cDNA and pIRESneoAnxA6/Met(1-) or Met(33-) using a reticulocyte lysate coupled transcription/translation system revealed that this gene contains two translation start codons, Met(1) and Met(33)...
October 11, 2016: Molecular Genetics and Metabolism
Francesca Lupo, Elena Tibaldi, Alessandro Matte, Alok K Sharma, Anna Maria Brunati, Seth L Alper, Carlo Zancanaro, Donatella Benati, Angela Siciliano, Mariarita Bertoldi, Francesca Zonti, Alexander Storch, Ruth H Walker, Adrian Danek, Benedikt Bader, Andreas Hermann, Lucia De Franceschi
Chorea-acanthocytosis is one of the hereditary neurodegenerative disorders known as the neuroacanthocytoses. Chorea-acanthocytosis is characterized by circulating acanthocytes deficient in chorein, a protein of unknown function. We report here for the first time that chorea-acanthocytosis red-cells are characterized by impaired autophagy, with cytoplasmic accumulation of active Lyn and of autophagy-related proteins Ulk1, Atg7. In chorea-acanthocytosis erythrocytes, active Lyn is sequestered by HSP90-70 to form high-molecular-weight complexes that stabilize and protect Lyn from its proteasomal degradation, contributing to toxic Lyn accumulation...
October 14, 2016: Blood
Jeffrey K Wickliffe, Stephen D Dertinger, Dorothea K Torous, Svetlana L Avlasevich, Bridget R Simon-Friedt, Mark J Wilson
Obesity increases the risk of a number of chronic diseases in humans including several cancers. Biological mechanisms responsible for such increased risks are not well understood at present. Increases in systemic inflammation and oxidative stress, endogenous production of mutagenic metabolites, altered signaling in proliferative pathways, and increased sensitivity to exogenous mutagens and carcinogens are some of the potential contributing factors. We hypothesize that obesity creates an endogenously mutagenic environment in addition to increasing the sensitivity to environmental mutagens...
October 14, 2016: Environmental and Molecular Mutagenesis
Jonathan W Hennek, Ashok A Kumar, Alex B Wiltschko, Matthew R Patton, Si Yi Ryan Lee, Carlo Brugnara, Ryan P Adams, George M Whitesides
Iron deficiency anemia (IDA) is a nutritional disorder that impacts over one billion people worldwide; it may cause permanent cognitive impairment in children, fatigue in adults, and suboptimal outcomes in pregnancy. IDA can be diagnosed by detection of red blood cells (RBCs) that are characteristically small (microcytic) and deficient in hemoglobin (hypochromic), typically by examining the results of a complete blood count performed by a hematology analyzer. These instruments are expensive, not portable, and require trained personnel; they are, therefore, unavailable in many low-resource settings...
October 5, 2016: Lab on a Chip
Yuji Shimizu, Shimpei Sato, Jun Koyamatsu, Hirotomo Yamanashi, Mako Nagayoshi, Koichiro Kadota, Takahiro Maeda
Previously, we reported that height is an indicator of the capacity of vascular repair in elderly men, especially hypertensive men. On the other hand, hemoglobin could act as a possible biochemical index of hypertension-induced vascular damage. However, no studies have clarified the correlation between height and hematopoietic activity. We conducted a cross-sectional study of 249 men aged 65-69 undergoing a general health check-up. Reticulocyte was used to evaluate hematopoietic activity. Because hemoglobin concentration should influence hematopoietic activity, analyses stratified by hemoglobin level were performed...
October 4, 2016: Aging
N M Gevorkyan, N V Tishevskaya, A A Bolotov
Total RNA from the bone marrow of healthy donor rats was injected to experimental rats 6 h, 2 h, or 30 min prior to a single γ-irradiation in the sublethal dose of 6 Gy. Injection total RNA 30 min prior to the exposure most effectively restored erythropoiesis in experimental animals. In 5 days, reticulocyte count in these animals 30-fold surpassed the control (injection of 0.9% NaCl). In 12 days, the content of new erythroblastic islands in the bone marrow in rats injected with the total RNA 2 h or 30 min prior to irradiation increased significantly and erythropoiesis recovery activation was observed...
September 2016: Bulletin of Experimental Biology and Medicine
Laetitia Piane, Karen M Young, Lena Giraud, Nathalie Bourges-Abella, Catherine Trumel
BACKGROUND: Erroneously high reticulocyte counts (pseudoreticulocytosis) have been reported in dogs with leukemia. Pseudoreticulocytosis and an abnormal reticulocyte profile were observed in a dog with large form babesiosis presented at our institution. OBJECTIVES: The aims of this retrospective study were to determine if dogs with babesiosis and other dogs had abnormal reticulocyte profiles, and to correlate these profiles with the primary diagnosis. METHODS: All canine CBCs obtained with the Sysmex XT-2000iV or Procyte DX were reviewed...
October 4, 2016: Veterinary Clinical Pathology
Mark Wunderlich, Courtney Stockman, Mahima Devarajan, Navin Ravishankar, Christina Sexton, Ashish R Kumar, Benjamin Mizukawa, James C Mulloy
Transgenic expression of key myelosupportive human cytokines in immune-deficient mice corrects for the lack of cross-species activities of stem cell factor (SCF), IL-3, and GM-CSF. When engrafted with human umbilical cord blood (UCB), these triple-transgenic mice produce BM and spleen grafts with much higher myeloid composition, relative to nontransgenic controls. Shortly after engraftment with UCB, these mice develop a severe, fatal macrophage activation syndrome (MAS) characterized by a progressive drop in rbc numbers, increased reticulocyte counts, decreased rbc half-life, progressive cytopenias, and evidence of chronic inflammation, including elevated human IL-6...
September 22, 2016: JCI Insight
Jacob Bejder, Niels Jacob Aachmann-Andersen, Thomas Christian Bonne, Niels Vidiendal Olsen, Nikolai Baastrup Nordsborg
The sensitivity of the adaptive model of the Athlete Biological Passport (ABP) and reticulocyte percentage (ret%) in detection of recombinant human erythropoietin (rHuEPO) misuse was evaluated using both a long-term normal dose and a brief high dose treatment regime. Sixteen subjects received either 65 IU rHuEPO × kg(-1) every second day for two weeks (normal-dose), 390 IU rHuEPO × kg(-1) on three consecutive days (high-dose), or frequent placebo treatment for 13 days in a randomized, placebo-controlled, double-blind crossover design...
October 2016: Drug Testing and Analysis
Maranda Esterhuizen-Londt, Stephan Pflugmacher
Even though the frequency and prevalence of cylindrospermopsin producing cyanobacteria are increasing, several publications have reported the absence of free cylindrospermopsin bioaccumulation in aquatic food chains. Cylindrospermopsin modification by protein binding has been suggested, however, only one publication has investigated this with eukaryotic reticulocyte lysate and concluded that cylindrospermopsin binds non-covalently to soluble proteins larger than 100 kDa associated with eukaryotic translation...
September 28, 2016: Toxicon: Official Journal of the International Society on Toxinology
Edward H Ntege, Nobuko Arisue, Daisuke Ito, Tomoyuki Hasegawa, Nirianne M Q Palacpac, Thomas G Egwang, Toshihiro Horii, Eizo Takashima, Takafumi Tsuboi
Genetic variability in Plasmodium falciparum malaria parasites hampers current malaria vaccine development efforts. Here, we hypothesize that to address the impact of genetic variability on vaccine efficacy in clinical trials, conserved antigen targets should be selected to achieve robust host immunity across multiple falciparum strains. Therefore, suitable vaccine antigens should be assessed for levels of polymorphism and genetic diversity. Using a total of one hundred and two clinical isolates from a region of high malaria transmission in Uganda, we analyzed extent of polymorphism and genetic diversity in four recently reported novel blood-stage malaria vaccine candidate proteins: Rh5 interacting protein (PfRipr), GPI anchored micronemal antigen (PfGAMA), rhoptry-associated leucine zipper-like protein 1 (PfRALP1) and Duffy binding-like merozoite surface protein 1 (PfMSPDBL1)...
September 28, 2016: Vaccine
Harriët M Loovers, Nienke Tamminga, André B Mulder, Rienk Y J Tamminga
Case reports on the effect of hydroxyurea (HU) therapy for unstable hemoglobins (Hbs) are sparse; only three adult cases have been reported. We report for the first time on the effect of HU therapy in children carrying unstable Hbs. The first case concerns a female child with a familial history of chronic hemolytic anemia. She was diagnosed with Hb Volga (HBB: c.83C>A) at the age of 7 months. At age 6, treatment options were reconsidered due to increasing fatigue and decreasing Hb concentration. The second case also concerns a female child with chronic hemolytic anemia and icterus since the age of 5...
September 30, 2016: Hemoglobin
Eric W Mills, Jamie Wangen, Rachel Green, Nicholas T Ingolia
Protein synthesis continues in platelets and maturing reticulocytes, although these blood cells lack nuclei and do not make new mRNA or ribosomes. Here, we analyze translation in primary human cells from anucleate lineages by ribosome profiling and uncover a dramatic accumulation of post-termination unrecycled ribosomes in the 3' UTRs of mRNAs. We demonstrate that these ribosomes accumulate as a result of the natural loss of the ribosome recycling factor ABCE1 during terminal differentiation. Induction of the ribosome rescue factors PELO and HBS1L is required to support protein synthesis when ABCE1 levels fall and for hemoglobin production during blood cell development...
September 27, 2016: Cell Reports
Camila T França, Wen-Qiang He, Jakub Gruszczyk, Nicholas T Y Lim, Enmoore Lin, Benson Kiniboro, Peter M Siba, Wai-Hong Tham, Ivo Mueller
BACKGROUND: Major gaps in our understanding of Plasmodium vivax biology and the acquisition of immunity to this parasite hinder vaccine development. P. vivax merozoites exclusively invade reticulocytes, making parasite proteins that mediate reticulocyte binding and/or invasion potential key vaccine or drug targets. While protein interactions that mediate invasion are still poorly understood, the P. vivax Reticulocyte-Binding Protein family (PvRBP) is thought to be involved in P. vivax restricted host-cell selectivity...
September 2016: PLoS Neglected Tropical Diseases
Ion Udroiu, Antonio Antoccia, Antonella Sgura
PURPOSE: To investigate the genotoxic effects of prenatal X-irradiation in mice and the possible presence of late genomic instability. MATERIALS AND METHODS: Pregnant mice were exposed to 0, 1, or 2 Gy at embryonic day 11.5. Blood smears were obtained from pups at birth and on post-natal day 11, 21, 42 and 140. Hematological data (diameter of erythrocytes, percentage of reticulocytes and Granulocyte-to-Lymphocyte ratio - GLR) and genotoxicity (micronucleated erythrocytes, micronucleated reticulocytes, CREST-positive and negative micronuclei) were assessed...
September 23, 2016: International Journal of Radiation Biology
Mugahid Faroug Mohamed Ali, Mohammed Osman Swar, Atika Mohamed Osman
Iron deficiency anaemia is frequently seen in the paediatric age group. Modifying the treatment options according to the affected area resources will help accessibility and compliance to treatment. Response of children with Iron deficiency anaemia to a natural hematinic (Carboadeim) versus iron syrup plus folic acid treatment was compared in this study. This is a prospective, interventional, controlled, hospital-based study conducted among children with iron deficiency anaemia residing in Hussein Village, Gezira State who attended Giad Hospital...
2016: Sudan J Paediatr
Pablo E Pergola, Bruce S Spinowitz, Charlotte S Hartman, Bradley J Maroni, Volker H Haase
Current treatment of anemia in chronic kidney disease (CKD) with erythropoiesis-stimulating agents can lead to substantial hemoglobin oscillations above target range and high levels of circulating erythropoietin. Vadadustat (AKB-6548), a novel, titratable, oral hypoxia-inducible factor prolyl hydroxylase inhibitor induces endogenous erythropoietin synthesis and enhances iron mobilization. In this 20-week, double-blind, randomized, placebo-controlled, phase 2b study, we evaluated the efficacy and safety of once-daily vadadustat in patients with stages 3a to 5 non-dialysis-dependent CKD...
November 2016: Kidney International
Charles T Quinn, Eric P Smith, Shahriar Arbabi, Paramjit K Khera, Christopher J Lindsell, Omar Niss, Clinton H Joiner, Robert S Franco, Robert M Cohen
Hemolysis is a key feature of sickle cell anemia (HbSS). Direct quantitation of hemolysis could be used as an objective outcome in clinical trials of new therapeutics for HbSS and would also enable better human studies of the pathogenesis of complications of HbSS that are ostensibly hemolysis-related, such as pulmonary hypertension. However, contemporary human studies in HbSS have used only surrogate markers of hemolysis rather than direct measurements of RBC survival. We directly quantified hemolysis in HbSS by measuring survival of an age cohort of RBCs labeled with a stable isotope, administered orally as (15) N-glycine, a metabolic precursor of heme...
September 20, 2016: American Journal of Hematology
Wenqing Hu, Bing Shi, Lihui Liu, Shengke He, Liping Ye, DengMei Tian, Yongqing Zhang
Linezolid (LZD), severed as the first oxazolidinone antibiotic, was active against multidrug-resistant gram-positive strains. LZD can induce thrombocytopenia, anemia and leukocytopenia. Currently, reports on pure red cell aplasia (PRCA) cases induced by LZD are relatively rare (4-7). In this paper, we reported a patient with PRCA twice induced by LZD. A 37-year-old man was diagnosed with myelodysplatic syndrome (MDS) and underwent allo-HSCT from an unrelated donor with ABO blood type and leukocyte antigen (HLA)-matching...
2016: Iranian Journal of Pharmaceutical Research: IJPR
Kelly-Anne Masterman, Andrew C Barnes
Neutrophils are a short-lived, terminally differentiated, innate immune cell, that are critical first responders during infection. Research into neutrophil-pathogen interactions in fish has primarily employed cells derived from the pro-nephros and nephros. Since these sites are also the location of neutrophil and other immune cell development, there may be some ambiguity in maturation and functional ability of these cells, and difficulty in differentiating the effects of neutrophils from those of macrophages and monocytes...
September 15, 2016: Fish & Shellfish Immunology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"