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https://www.readbyqxmd.com/read/28331341/investigating-the-expression-effect-and-tumorigenic-pathway-of-padi2-in-tumors
#1
Wei Guo, Yabing Zheng, Bing Xu, Fang Ma, Chang Li, Xiaoqian Zhang, Yao Wang, Xiaotian Chang
BACKGROUND: Peptidylarginine deiminase (PAD) catalyzes the conversion of arginine residues to citrulline residues, termed citrullination. Recent studies have suggested that PAD isoform 2 (PADI2) plays an important role in tumors, although its tumorigenic effect and mechanism are largely unknown. MATERIALS AND METHODS: Immunohistochemistry and enzyme-linked immunosorbent assay (ELISA) were used to investigate the expression level of PADI2 in various tumor tissues and patient blood samples, respectively...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28315563/impact-of-serum-erythropoietin-level-on-collateral-vessel-development-in-patients-with-coronary-artery-disease
#2
Nil Özyüncü, Sadi Güleç, Çağdaş Özdöl, Başar Candemir, Aydan Ongun, Cansın Tulunay Kaya, Çetin Erol
OBJECTIVE: Experimental data have shown that Erythropoietin (EPO) stimulates angiogenesis and neovascularization which may result in improved collateral development. The aim of this study was to investigate the association between serum EPO levels and the extent of coronary collaterals. Patient characteristics possibly related with coronary collaterals were also sought. METHODS: A total of 256 patients with high grade coronary stenosis or occlusion were evaluated for the extent of coronary collaterals using Rentrop classification...
March 9, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28306566/anemia-management-in-chronic-kidney-disease-and-dialysis-a-narrative-review
#3
David Collister, Claudio Rigatto, Navdeep Tangri
PURPOSE OF REVIEW: This review describes the current state of anemia management with erythropoietin (EPO)-stimulating agents and iron supplementation in both chronic kidney disease and dialysis patients, with a focus on novel therapies. RECENT FINDINGS: We review the benefits and risks of EPO-stimulating agents, focusing on health-related quality of life and the uncertainties regarding optimal iron utilization in patients with kidney disease. We discuss novel therapies for iron supplementation including iron-based phosphate binders and dialysate iron delivery as well as alternatives to EPO-stimulating agents including hypoxia-inducible factor prolyl hydroxylase inhibitors...
March 16, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28306159/positioning-the-principles-of-precision-medicine-in-care-pathways-for-allergic-rhinitis-and-chronic-rhinosinusitis-an-euforea-aria-epos-airways-icp-statement
#4
P W Hellings, W J Fokkens, C Bachert, C A Akdis, T Bieber, I Agache, M Bernal-Sprekelsen, G W Canonica, P Gevaert, G Joos, V Lund, A Muraro, M Onerci, T Zuberbier, B Pugin, S F Seys, J Bousquet
Precision medicine (PM) is increasingly recognized as the way forward for optimizing patient care. Introduced in the field of oncology, it is now considered of major interest in other medical domains like allergy and chronic airway diseases, which face an urgent need to improve the level of disease control, enhance patient satisfaction and increase effectiveness of preventive interventions. The combination of personalized care, prediction of treatment success, prevention of disease and patient participation in the elaboration of the treatment plan is expected to substantially improve the therapeutic approach for individuals suffering from chronic disabling conditions...
March 17, 2017: Allergy
https://www.readbyqxmd.com/read/28302753/erythropoietin-receptor-mediated-molecular-crosstalk-promotes-t-cell-immunoregulation-and-transplant-survival
#5
Carolina Purroy, Robert L Fairchild, Toshiaki Tanaka, William M Baldwin, Joaquin Manrique, Joren C Madsen, Robert B Colvin, Alessandro Alessandrini, Bruce R Blazar, Miguel Fribourg, Chiara Donadei, Umberto Maggiore, Peter S Heeger, Paolo Cravedi
Although spontaneous kidney transplant acceptance/tolerance occurs in mice and occasionally in humans, mechanisms remain unclear. Herein we test the hypothesis that EPO, a hormone predominantly produced by the adult kidney, has immunomodulating properties that are required for spontaneous kidney graft acceptance. In vitro, in a manner dependent on the EPO receptor and CD131 on antigen-presenting cells, EPO induced the secretion of active TGFβ by antigen-presenting cells, which in turn converted naïve CD4(+) T cells into functional Foxp3(+) regulatory T cells (Treg)...
March 16, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28299330/erythropoietin-modification-enhances-the-protection-of-mesenchymal-stem-cells-on-diabetic-rat-derived-schwann-cells-implications-for-diabetic-neuropathy
#6
Shuyun Zhang, Baolin Shi
Diabetes-triggered apoptosis of Schwann cells (SC) contributes to the degradation of diabetic peripheral neuropathy (DNP). In recent years, mesenchymal stem cells (MSC) were applied to DPN repair and it was demonstrated that paracrine secretion played a key role in neuroprotection exerted by MSC. Erythropoietin (EPO) is a potent cytokine capable of reducing apoptosis of SC. However, the expression of EPO in MSC is limited. In this study, we hypothesized that overexpression of EPO in MSC (EPO-MSC) may significantly improve their neuroprotective potentials...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28298334/erythropoietin-facilitates-definitive-endodermal-differentiation-of-mouse-embryonic-stem-cells-via-activation-of-erk-signaling
#7
Taku Kaitsuka, Kohei Kobayashi, Wakako Otsuka, Takuya Kubo, Farzana Hakim, Fan-Yan Wei, Nobuaki Shiraki, Shoen Kume, Kazuhito Tomizawa
Artificially generated pancreatic β-cells from pluripotent stem cells are expected for cell replacement therapy for type 1 diabetes. Several strategies are adopted to direct pluripotent stem cells toward pancreatic differentiation. However, a standard differentiation method for clinical application has not been established. It is important to develop more effective and safer methods for generating pancreatic β-cells without toxic or mutagenic chemicals. In the present study, we screened several endogenous factors involved in organ development to identify the factor, which induced the efficiency of pancreatic differentiation and found that treatment with erythropoietin (EPO) facilitated the differentiation of mouse embryonic stem cells (ESCs) into definitive endoderm...
March 15, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28294062/warming-up-to-new-possibilities-with-the-capsaicin-receptor-trpv1-mtor-ampk-and-erythropoietin
#8
Kenneth Maiese
BACKGROUND: Transient receptor potential (TRP) channels are a superfamily of ion channels termed after the trp gene in Drosophila that are diverse in structure and control a wide range of biological functions including cell development and growth, thermal regulation, and vascular physiology. Of significant interest is the transient receptor potential cation channel subfamily V member 1 (TRPV1) receptor, also known as the capsaicin receptor and the vanilloid receptor 1, that is a non-selective cation channel sensitive to a host of external stimuli including capsaicin and camphor, venoms, acid/basic pH changes, and temperature...
March 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28293718/transfection-of-primary-brain-capillary-endothelial-cells-for-protein-synthesis-and-secretion-of-recombinant-erythropoietin-a-strategy-to-enable-protein-delivery-to-the-brain
#9
Annette Burkhart, Thomas Lars Andresen, Achim Aigner, Louiza Bohn Thomsen, Torben Moos
Treatment of chronic disorders affecting the central nervous system (CNS) is complicated by the inability of drugs to cross the blood-brain barrier (BBB). Non-viral gene therapy applied to brain capillary endothelial cells (BCECs) denotes a novel approach to overcome the restraints in this passage, as turning BCECs into recombinant protein factories by transfection could result in protein secretion further into the brain. The present study aims to investigate the possibility of transfecting primary rat brain endothelial cells (RBECs) for recombinant protein synthesis and secretion of the neuroprotective protein erythropoietin (EPO)...
March 14, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28290859/-prognostic-significance-of-erythropoietin-in-patients-with-acute-coronary-syndrome
#10
M V Menzorov, A M Shutov, N V Larionova, A A Strakhov, D V Serova
AIM: to investigate the prognostic role of erythropoietin (EPO) in patients with acute coronary syndrome (ACS). MATERIAL AND METHODS: Eighty-four patients (46 men, 38 women, mean age 63+/-11 years) with ACS were studied. Twenty-one patients had ST-elevation myocardial infarction (STEMI), 12 - non-ST-elevation myocardial infarction, 51 - unstable angina (UA). Ten patients with STEMI received thrombolytic therapy. Coronary angiography during hospitalization was criterion for exclusion from the study...
September 2016: Kardiologiia
https://www.readbyqxmd.com/read/28288167/erythropoietin-epo-ameliorates-obesity-and-glucose-homeostasis-by-promoting-thermogenesis-and-endocrine-function-of-classical-brown-adipose-tissue-bat-in-diet-induced-obese-mice
#11
Kazuki Kodo, Satoru Sugimoto, Hisakazu Nakajima, Jun Mori, Ikuyo Itoh, Shota Fukuhara, Keiichi Shigehara, Taichiro Nishikawa, Kitaro Kosaka, Hajime Hosoi
Erythropoietin (EPO), clinically used as a hematopoietic drug, has received much attention due to its nonhematopoietic effects. EPO reportedly has beneficial effects on obesity and diabetes mellitus. We investigated whether interscapular brown adipose tissue (iBAT: main part of classical BAT) could play a role in EPO's anti-obesity and anti-diabetic effects in diet-induced obese mice. Four-week-old male C57BL/6J mice were fed a high-fat diet (HFD-Con), and half were additionally given an intraperitoneal injection of recombinant human EPO (200 IU/kg) (HFD-EPO) thrice a week for four weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28287743/a-systematic-study-of-molecular-interactions-of-anionic-drugs-with-a-dimethylaminoethyl-methacrylate-copolymer-regarding-solubility-enhancement
#12
Wiebke Saal, Alfred Ross, Nicole Wyttenbach, Jochem Alsenz, Martin Kuentz
The methacrylate-copolymer Eudragit EPO (EPO) has raised interest in solubility enhancement of anionic drugs. Effects on aqueous drug solubility at rather low polymer concentrations are barely known despite their importance upon dissolution and dilution of oral dosage forms. We provide evidence for substantial enhancement (factor 4-230) of aqueous solubility of poorly water-soluble anionic drugs induced by low (0.1-5% (w/w)) concentration of EPO for a panel of seven acidic crystalline drugs. Diffusion data (determined by (1)H nuclear magnetic resonance spectroscopy) indicate that the solubility increasing effect monitored by quantitative ultraperformance liquid chromatography was caused primarily by molecular API polymer interactions in the bulk liquid phase...
March 21, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28286727/a-novel-combination-of-four-flavonoids-derived-from-astragali-radix-relieves-the-symptoms-of-cyclophosphamide-induced-anemic-rats
#13
Li Zhang, Amy G W Gong, Kashif Riaz, Jun Y Deng, Chih M Ho, Huang Q Lin, Tina T X Dong, Yi-Kuen Lee, Karl W K Tsim
By using a feedback system control scheme, the best combination of formononetin, ononin, calycosin, and calycosin-7-O-β-d-glucoside derived from Astragali Radix was shown to activate a hypoxia response element, a regulator for erythropoietin (EPO) transcription, in kidney fibroblast. In cyclophosphamide-induced anemic rats, the treatment of combined flavonoids, or EPO, improved the levels of red blood cells, white blood cells, hemoglobin, and hematocrit. In addition, the altered levels of antioxidant capacity, super oxidase dismutase, and malondialdehyde, triggered in anemic rats, were restored to control levels by the treatment of flavonoids...
March 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28283542/sex-difference-in-mouse-metabolic-response-to-erythropoietin
#14
Yuanyuan Zhang, Heather M Rogers, Xiaojie Zhang, Constance Tom Noguchi
Erythropoietin (EPO) is the cytokine that regulates red blood cell production. Less understood is the nonerythroid action of EPO, including metabolic regulation of fat accumulation and glucose homeostasis. Although EPO treatment increased hematocrit and improved glucose tolerance in male and female mice, we observed a gender difference in EPO effects in weight control. EPO treatment reduced diet-induced weight gain from 9.6 ± 1.5 g to 4.2 ± 1.4 g in male mice (P < 0.001), while the weight gain in female mice were similar (4...
March 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28283061/functional-selectivity-in-cytokine-signaling-revealed-through-a-pathogenic-epo-mutation
#15
Ah Ram Kim, Jacob C Ulirsch, Stephan Wilmes, Ekrem Unal, Ignacio Moraga, Musa Karakukcu, Daniel Yuan, Shideh Kazerounian, Nour J Abdulhay, David S King, Namrata Gupta, Stacey B Gabriel, Eric S Lander, Turkan Patiroglu, Alper Ozcan, Mehmet Akif Ozdemir, K Christopher Garcia, Jacob Piehler, Hanna T Gazda, Daryl E Klein, Vijay G Sankaran
Cytokines are classically thought to stimulate downstream signaling pathways through monotonic activation of receptors. We describe a severe anemia resulting from a homozygous mutation (R150Q) in the cytokine erythropoietin (EPO). Surprisingly, the EPO R150Q mutant shows only a mild reduction in affinity for its receptor but has altered binding kinetics. The EPO mutant is less effective at stimulating erythroid cell proliferation and differentiation, even at maximally potent concentrations. While the EPO mutant can stimulate effectors such as STAT5 to a similar extent as the wild-type ligand, there is reduced JAK2-mediated phosphorylation of select downstream targets...
March 9, 2017: Cell
https://www.readbyqxmd.com/read/28282554/erythropoietin-administration-increases-splenic-erythroferrone-protein-content-and-liver-tmprss6-protein-content-in-rats
#16
Iuliia Gurieva, Jana Frýdlová, Zuzana Rychtarčíková, Martin Vokurka, Jaroslav Truksa, Jan Krijt
Erythroferrone (ERFE) and TMPRSS6 are important proteins in the regulation of iron metabolism. The objective of the study was to examine splenic ERFE and liver TMPRSS6 synthesis in rats treated with a combination of iron and erythropoietin (EPO). EPO was administered to female Wistar rats at 600U/day for four days, iron-pretreated rats received 150mg of iron before EPO treatment. Content of ERFE and TMPRSS6 proteins was determined by commercial antibodies. Iron pretreatment prevented the EPO-induced decrease in hepcidin expression...
February 28, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28280963/development-of-an-in-vitro-bioassay-for-recombinant-human-erythropoietin-rhuepo-based-on-proliferative-stimulation-of-an-erythroid-cell-line-and-analysis-of-sialic-acid-dependent-microheterogeneity-ut-7-cell-bioassay
#17
Manoj Kumar Metta, Vasavi Malkhed, Srinivasan Tantravahi, Uma Vuruputuri, Rajkumar Kunaparaju
Determination of biological activity and its comparison with clinical behavior is important in the quality assessment of therapeutic glycoproteins. In vivo studies are usually employed for evaluating bioactivity of these glycomolecules. However, alternative methods are required to simplify the bioassay and avoid ethical issues associated with in vivo studies. Negatively charged sialic acid residues are known to be critical for in vivo bioactivity of rHuEPO. To address this need, we employed the human acute myeloid leukemia cell line UT-7 for the determination of proliferative stimulation induced by rHuEPO...
March 9, 2017: Protein Journal
https://www.readbyqxmd.com/read/28280920/erythropoietin-levels-in-patients-with-sleep-apnea-a-meta-analysis
#18
Xiao-Bin Zhang, Yi-Ming Zeng, Hui-Qing Zeng, Hua-Ping Zhang, Hui-Ling Wang
Currently available data regarding the blood levels of erythropoietin (EPO) in sleep apnea (SA) patients are contradictory. The aim of the present meta-analysis was to evaluate the EPO levels in SA patients via quantitative analysis. A systematic search of Pubmed, Embase, and Web of Science were performed. EPO levels in SA group and control group were extracted from each eligible study. Weight mean difference (WMD) or Standard mean difference (SMD) with 95% confidence interval (CI) was calculated by using fixed-effects or random effect model analysis according to the degree of heterogeneity between studies...
March 9, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28277490/erythropoietin-monotherapy-in-perinatal-asphyxia-with-moderate-to-severe-encephalopathy-a-randomized-placebo-controlled-trial
#19
R R Malla, R Asimi, M A Teli, F Shaheen, M A Bhat
OBJECTIVE: Erythropoietin (EPO) is neuroprotective after asphyxia in animal studies. The efficacy and safety of EPO monotherapy in term neonates with hypoxic ischemic encephalopathy (HIE) is uncertain. STUDY DESIGN: Hundred term neonates with moderate or severe HIE were randomized by random permuted block algorithm to receive either EPO 500 U kg(-1) per dose in 2 ml saline intravenously (50 neonates) on alternate days for a total of five doses with the first dose given by 6 h of age (treatment group) or 2 ml of normal saline (50 neonates) similarly for a total of five doses (placebo group) in a double-blind study...
March 9, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28273832/more-insight-into-bdnf-against-neurodegeneration-anti-apoptosis-anti-oxidation-and-suppression-of-autophagy
#20
REVIEW
Shang-Der Chen, Chia-Lin Wu, Wei-Chao Hwang, Ding-I Yang
In addition to its well-established neurotrophic action, brain-derived neurotrophic factor (BDNF) also possesses other neuroprotective effects including anti-apoptosis, anti-oxidation, and suppression of autophagy. We have shown before that BDNF triggers multiple mechanisms to confer neuronal resistance against 3-nitropropionic acid (3-NP)-induced mitochondrial dysfunction in primary rat cortical cultures. The beneficial effects of BDNF involve the induction of anti-oxidative thioredoxin with the resultant expression of anti-apoptotic B-cell lymphoma 2 (Bcl-2) as well as erythropoietin (EPO)-dependent stimulation of sonic hedgehog (SHH)...
March 3, 2017: International Journal of Molecular Sciences
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