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https://www.readbyqxmd.com/read/28429085/the-role-of-rna-alternative-splicing-in-regulating-cancer-metabolism
#1
REVIEW
Itamar Kozlovski, Zahava Siegfried, Adi Amar-Schwartz, Rotem Karni
Tumor cells alter their metabolism by a wide array of mechanisms to promote growth and proliferation. Dysregulated expression and/or somatic mutations of key components of the glycolytic pathway/TCA cycle as well as other metabolic pathways allow tumor cells to improve their ability to survive harsh conditions such as hypoxia and the presence of reactive oxygen species, as well as the ability to obtain nutrients to increase lipids, protein, and nucleic acids biogenesis. Approximately 95% of the human protein encoding genes undergo alternative splicing (AS), a regulated process of gene expression that greatly diversifies the proteome by creating multiple proteins from a single gene...
April 20, 2017: Human Genetics
https://www.readbyqxmd.com/read/28428550/structure-based-dynamic-arrays-in-regulatory-domains-of-sodium-calcium-exchanger-ncx-isoforms
#2
Moshe Giladi, Su Youn Lee, Yarden Ariely, Yotam Teldan, Rotem Granit, Roi Strulovich, Yoni Haitin, Ka Young Chung, Daniel Khananshvili
Mammalian Na(+)/Ca(2+) exchangers, NCX1 and NCX3, generate splice variants, whereas NCX2 does not. The CBD1 and CBD2 domains form a regulatory tandem (CBD12), where Ca(2+) binding to CBD1 activates and Ca(2+) binding to CBD2 (bearing the splicing segment) alleviates the Na(+)-induced inactivation. Here, the NCX2-CBD12, NCX3-CBD12-B, and NCX3-CBD12-AC proteins were analyzed by small-angle X-ray scattering (SAXS) and hydrogen-deuterium exchange mass-spectrometry (HDX-MS) to resolve regulatory variances in the NCX2 and NCX3 variants...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28414973/regulation-of-antibiotic-resistance-by-non-coding-rnas-in-bacteria
#3
REVIEW
Daniel Dar, Rotem Sorek
Antibiotic resistance genes are commonly regulated by sophisticated mechanisms that activate gene expression in response to antibiotic exposure. Growing evidence suggest that cis-acting non-coding RNAs play a major role in regulating the expression of many resistance genes, specifically those which counteract the effects of translation-inhibiting antibiotics. These ncRNAs reside in the 5'UTR of the regulated gene, and sense the presence of the antibiotics by recruiting translating ribosomes onto short upstream open reading frames (uORFs) embedded in the ncRNA...
April 14, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28406726/role-of-heterotrimeric-g-proteins-in-platelet-activation-and-clot-formation-in-platelets-treated-with-integrin-%C3%AE-iib%C3%AE-3-inhibitor
#4
Ivan Budnik, Boris Shenkman, Hagit Hauschner, Isaac Zilinsky, Naphtali Savion
Mechanisms of platelet activation are triggered by thrombin, adenosine diphosphate (ADP), epinephrine, thromboxane A2, and other soluble agonists which induce signaling via heterotrimeric Gαq, Gαi, and Gα12/13 proteins. We have undertaken a study addressing the contribution of these G proteins to platelet activation and clot formation in the presence of eptifibatide, thus excluding outside-in signaling provided by integrin αIIbβ3-fibrinogen engagement. Selective and combined activation of the G proteins was achieved by using combinations of platelet agonists and inhibitors...
April 13, 2017: Platelets
https://www.readbyqxmd.com/read/28406575/monitoring-once-weekly-recombinant-factor-ix-prophylaxis-in-hemophilia-b-with-thrombin-generation-assay-and-factor-ix-activity
#5
V Nummi, A Jouppila, R Lassila
INTRODUCTION: Prophylaxis is the recommended treatment mode for severe hemophilia B. However, no single treatment regimen fits for all patients. Once-weekly prophylaxis with high-dose recombinant factor IX (rFIX) is efficacious, nevertheless, laboratory outcomes following 72 h after administration are lacking. METHODS: In a prospective open-label noncomparative study, 10 severe/moderate (FIX ≤2 IU/dL) adult patients received rFIX dose (60-100 IU/kg) after >72 h washout on two occasions, separated by 7 days...
April 13, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28403868/the-use-of-viscoelastic-haemostatic-assays-in-goal-directing-treatment-with-allogeneic-blood-products-a-systematic-review-and-meta-analysis
#6
REVIEW
Mathilde Fahrendorff, Roberto S Oliveri, Pär I Johansson
BACKGROUND: Management of the critically bleeding patient can be encountered in many medical and surgical settings. Common for these patients is a high risk of dying from exsanguination secondary to developing coagulopathy. The purpose of this meta-analysis was to systematically review and assess randomised controlled trials (RCTs) performed on patients in acute need for blood transfusions due to bleeding to evaluate the effect of viscoelastic haemostatic assay (VHA) guidance on bleeding, transfusion requirements and mortality...
April 13, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28399457/cumulative-pain-related-stress-and-developmental-outcomes-among-low-risk-preterm-infants-at-one-year-corrected-age
#7
Iris Morag, Ifat Rotem, Mor Frisch, Israel Hendler, Michal J Simchen, Leah Leibovitz, Ayala Maayan-Metzger, Tzipora Strauss
BACKGROUND: Extensive exposure of preterm infants to pain-related stress (PRS) at a time of physiological immaturity and rapid brain development may contribute to altered neurodevelopment. OBJECTIVE: To examine the relationship between early PRS and neurodevelopmental outcomes among low-risk very preterm infants at the age of one year corrected age (CA). METHODS: Participants included 107 infants born <32weeks gestational age (GA) and monitored prospectively at 12...
April 8, 2017: Early Human Development
https://www.readbyqxmd.com/read/28394315/corrigendum-frequency-phase-analysis-of-resting-state-functional-mri
#8
Gadi Goelman, Rotem Dan, Filip Růžička, Ondrej Bezdicek, Evžen Růžička, Jan Roth, Josef Vymazal, Robert Jech
No abstract text is available yet for this article.
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28393783/coagulopathies-in-cyanotic-cardiac-patients-an-analysis-with-three-point-of-care-testing-devices-thromboelastography-rotational-thromboelastometry-and-sonoclot-analyzer
#9
Vandana Bhardwaj, Poonam Malhotra, Suruchi Hasija, Ujjwal Kumar Chowdury, Neha Pangasa
INTRODUCTION: In the last few years, viscoelastic point-of-care (POC) coagulation devices such as thromboelastography (TEG), rotational thromboelastometry (ROTEM), and Sonoclot (SON) analyzer have been increasingly used in major surgeries for timely assessment and management of coagulopathies. The aim of the present study was to evaluate coagulation profile of cyanotic cardiac patients with TEG, ROTEM, and SON analyzer. In addition, we assessed the correlation of standard laboratory coagulation tests and postoperative chest drain output (CDO) with the parameters of POC testing devices...
April 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28385331/generalized-verrucosis-and-abnormal-t-cell-activation-due-to-homozygous-taok2-mutation
#10
Vered Molho-Pessach, Yuval Ramot, Maxim Mogilevsky, Leonor Cohen-Daniel, Eli M Eisenstein, Abdulsalam Abu-Libdeh, Ihab Siam, Michael Berger, Rotem Karni, Abraham Zlotogorski
BACKGROUND: Generalized verrucosis (GV) is a chronic and progressive cutaneous human papillomavirus (HPV) infection resulting in multiple warts and associated with acquired or genetic immune defects. We identified a consanguineous Arab family manifesting GV and recurrent bacterial and viral infections, in association with inflammatory bowel disease (IBD). OBJECTIVE: To identify the mutated gene responsible for GV, recurrent infections and IBD, in this family. METHODS: Flow cytometry of peripheral blood mononuclear cells was performed, as well as proliferation and cell cycle assays of T cells...
March 27, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28383467/the-effect-of-blood-transfusion-on-compensatory-reserve-a-prospective-clinical-trial
#11
Avi Benov, Ori Yaslowitz, Tal Hakim, Rotem Amir-Keret, Roy Nadler, Anat Brand, Elon Glassberg, Avi Yitzhak, Victor A Convertino, Haim Paran
BACKGROUND: Bleeding activates the body's compensatory mechanisms, causing changes in vital signs to appear late in the course of progressive blood loss. These vital signs are maintained even when up to 30% to 40% of blood volume is lost. Laboratory tests such as hemoglobin, hematocrit, lactate, and base deficit levels do not change during acute phase of bleeding. The compensatory reserve measurement (CRM) represents a new paradigm that measures the total of all physiological compensatory mechanisms, using noninvasive photoplethysmography to read changes in arterial waveforms...
April 5, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28381526/mirna-132-induces-hepatic-steatosis-and-hyperlipidaemia-by-synergistic-multitarget-suppression
#12
Geula Hanin, Nadav Yayon, Yonat Tzur, Rotem Haviv, Estelle R Bennett, Shiran Udi, Yoganathan R Krishnamoorthy, Eleni Kotsiliti, Rivka Zangen, Ben Efron, Joseph Tam, Orit Pappo, Eyal Shteyer, Eli Pikarsky, Mathias Heikenwalder, David S Greenberg, Hermona Soreq
OBJECTIVE: Both non-alcoholic fatty liver disease (NAFLD) and the multitarget complexity of microRNA (miR) suppression have recently raised much interest, but the in vivo impact and context-dependence of hepatic miR-target interactions are incompletely understood. Assessing the relative in vivo contributions of specific targets to miR-mediated phenotypes is pivotal for investigating metabolic processes. DESIGN: We quantified fatty liver parameters and the levels of miR-132 and its targets in novel transgenic mice overexpressing miR-132, in liver tissues from patients with NAFLD, and in diverse mouse models of hepatic steatosis...
April 5, 2017: Gut
https://www.readbyqxmd.com/read/28380019/thromboelastometric-analysis-of-the-risk-factors-for-return-of-spontaneous-circulation-in-adult-patients-with-out-of-hospital-cardiac-arrest
#13
Hiroyuki Koami, Yuichiro Sakamoto, Ryota Sakurai, Miho Ohta, Hisashi Imahase, Mayuko Yahata, Mitsuru Umeka, Toru Miike, Futoshi Nagashima, Takashi Iwamura, Kosuke Chris Yamada, Satoshi Inoue
It is well known that coagulopathy is observed in patients with out-of-hospital cardiac arrest (OHCA). Thrombolytic therapy for those patients has been controversial until now. The purpose of this study was to identify a significant predictor for return of spontaneous circulation (ROSC) of OHCA patients in the emergency department (ED) using whole blood viscoelastic testing. Adult non-trauma OHCA patients transported to our hospital that underwent thromboelastometry (ROTEM) during cardiopulmonary resuscitation between January 2013 and December 2015 were enrolled in this study...
2017: PloS One
https://www.readbyqxmd.com/read/28374470/the-effect-of-fresh-frozen-plasma-in-critically-ill-patients
#14
E Vibede, C L Hvas, E Tønnesen, A-M Hvas
BACKGROUND: Critically ill patients often receive fresh frozen plasma (FFP) if they have abnormal conventional coagulation tests. The aim of this study was to investigate the effect of FFP transfusion judged by a wide range of coagulation tests. METHODS: We included 30 critically ill patients receiving FFP and 30 critically ill patients who did not receive FFP. For patients receiving FFP, blood samples were obtained before and 1 h after FFP transfusion. Conventional coagulation tests, thromboelastometry (ROTEM(®) , EXTEM, INTEM and FIBTEM) and thrombin generation were performed...
May 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28362128/a-pilot-study-on-the-applicability-of-thromboelastometry-in-detecting-brain-tumour-induced-hypercoagulation
#15
Erik Jansohn, Johan Bengzon, Thomas Kander, Ulf Schött
Patients with intracranial tumours have an increased risk of venous thromboembolism, particularly during the first month after neurosurgery. A proposed explanation for this increased risk, are procoagulant tumour-derived substances, such as tissue factor, usually measured in peripheral blood. The aim of the present study is to investigate whether a rotational thromboelastometry (ROTEM) can measure the procoagulative activity of tumour tissue. The study included 21 patients who were undergoing a craniotomy and complete tumour resection after written consent and ethical approval were obtained...
March 31, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28360822/impact-of-blood-hypercoagulability-on-in-vitro-fertilization-outcomes-a-prospective-longitudinal-observational-study
#16
Grigoris T Gerotziafas, Patrick Van Dreden, Emmanuelle Mathieu d'Argent, Eleftheria Lefkou, Matthieu Grusse, Marjorie Comtet, Rabiatou Sangare, Hela Ketatni, Annette K Larsen, Ismail Elalamy
BACKGROUND: Blood coagulation plays a crucial role in the blastocyst implantation process and its alteration may be related to in vitro fertilization (IVF) failure. We conducted a prospective observational longitudinal study in women eligible for IVF to explore the association between alterations of coagulation with the IVF outcome and to identify the biomarkers of hypercoagulability which are related with this outcome. METHODS: Thirty-eight women eligible for IVF (IVF-group) and 30 healthy, age-matched women (control group) were included...
2017: Thrombosis Journal
https://www.readbyqxmd.com/read/28359136/point-of-care-testing-in-burn-patients
#17
Marion Wiegele, Sibylle Kozek-Langenecker, Eva Schaden
Severe burn injury has an impact on the coagulation system, but a unique definition regarding these changes is still missing. The results of conventional coagulation assays (CCAs) measured in daily clinical practice are often interpreted as coagulopathic, which implies a bleeding tendency. However, viscoelastic coagulation assays (VCA) like Rotational Thromboelastometry (ROTEM) and Thromboelastography (TEG) depict a hypercoagulable state. Therefore, hemostatic interventions should not be indicated according to deranged CCA results, but only in case of clinically relevant bleeding plus indicative VCA results...
March 30, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28359133/point-of-care-coagulation-testing-in-cardiac-surgery
#18
Daniel Bolliger, Kenichi A Tanaka
Bleeding complications after cardiac surgery are common and are associated with increased morbidity and mortality. Their etiology is multifactorial, and treatment decisions are time sensitive. Point-of-care (POC) testing has an advantage over standard laboratory tests for faster turn-around times, and timely decision on coagulation intervention(s). The most common POC coagulation testing is the activated clotting time (ACT), used to monitor heparin therapy while on cardiopulmonary bypass. Viscoelastic coagulation tests including thromboelastometry (ROTEM) and thromboelastography (TEG) have been recommended for the treatment of postoperative bleeding after cardiac surgery because the ROTEM/TEG-guided treatment algorithms reduced the use of blood products...
March 30, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28348172/database-independent-protein-sequencing-dips-enables-full-length-de-novo-protein-and-antibody-sequence-determination
#19
Alon Savidor, Rotem Barzilay, Dalia Elinger, Yosef Yarden, Moshit Lindzen, Alexandra Gabashvili, Ophir Adiv Tal, Yishai Levin
Traditional 'bottom-up' proteomics approaches use proteolytic digestion, LC-MS/MS and database searching to elucidate peptide identities and their parent proteins. Protein sequences absent from the database cannot be identified, and even if present in the database, complete sequence coverage is rarely achieved even for the most abundant proteins in the sample. Thus, sequencing of unknown proteins such as antibodies or constituents of metaproteomes remains a challenging problem. To date, there is no available method for full-length protein sequencing, independent of a reference database, in high throughput...
March 27, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28347811/whole-blood-coagulation-assays-rotem-and-t-tas-to-monitor-dabigatran-treatment
#20
Viktor Taune, Håkan Wallén, Anna Ågren, Gunilla Gryfelt, Carolina Sjövik, Anna M Wintler, Rickard E Malmström, Agneta Wikman, Mika Skeppholm
BACKGROUND: A rapid and reliable assessment of the dabigatran effect is desirable in dabigatran treated patients with uncontrolled bleeding or before acute surgery. OBJECTIVE: To evaluate how the viscoelastic point-of-care test Rotational thromboelastometry (ROTEM) and Total Thrombus-formation system (T-TAS), which studies thrombus formation under flowing conditions, correlate with dabigatran concentrations in patients with atrial fibrillation (AF). METHOD: ROTEM using the reagents In-tem, Ex-tem, Fib-tem or low tissue factor concentration (TF), and T-TAS with the AR-chip (shear rate 600s(-1), representing flow in large arteries) were investigated in whole blood samples...
March 18, 2017: Thrombosis Research
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