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https://www.readbyqxmd.com/read/29790100/the-neurogenesis-actuator-and-nr2b-nmda-receptor-antagonist-ro25-6981-consistently-improves-spatial-memory-retraining-via-brain-region-specific-gene-expression
#1
Marina A Gruden, Alexander M Ratmirov, Zinaida I Storozheva, Olga A Solovieva, Vladimir V Sherstnev, Robert D E Sewell
NR2B-containing NMDA (NR2B/NMDA) receptors are important in controlling neurogenesis and are involved in generating spatial memory. Ro25-6981 is a selective antagonist at these receptors and actuates neurogenesis and spatial memory. Inter-structural neuroanatomical profiles of gene expression regulating adult neurogenesis and neuroapoptosis require examination in the context of memory retrieval and reversal learning. The aim was to investigate spatial memory retrieval and reversal learning in relation to gene expression-linked neurogenetic processes following blockade of NR2B/NMDA receptors by Ro25-6981...
May 22, 2018: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29790071/impact-of-polar-body-biopsy-on-embryo-morphokinetics-back-to-the-roots-in-preimplantation-genetic-testing
#2
Michael Schenk, Andrea Groselj-Strele, Katharina Eberhard, Elisabeth Feldmeier, Darja Kastelic, Stefanie Cerk, Gregor Weiss
PURPOSE: Polar body biopsy (PBB) is a common technique in preimplantation genetic testing (PGT) to assess the chromosomal status of the oocyte. Numerous studies have been implemented to investigate the impact of biopsies on embryo development; however, information on embryo morphokinetics is still lacking. Hence, we investigated the impact of PBB on morphokinetic parameters in early embryo development. METHODS: Four hundred four embryos (202 PBB, 202 control) were retrospectively analyzed...
May 22, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29784618/ovarian-reserve-and-response-to-stimulation-in-women-undergoing-fertility-preservation-according-to-malignancy-type
#3
Tiphaine Lefebvre, Sophie Mirallié, Florence Leperlier, Arnaud Reignier, Paul Barrière, Thomas Fréour
RESEARCH QUESTION: Does ovarian reserve and ovarian response to ovarian stimulation in women with cancer undergoing oocyte vitrification for fertility preservation vary according to the type of malignancy? DESIGN: Retrospective cohort study including 105 women aged between 18 and 40 years, who were referred for fertility preservation (oocyte vitrification) between 2013 and 2016. The women were divided into three groups: breast cancer, lymphoma or other cancer. All of them had been recently diagnosed with cancer, with gonadotoxic treatment scheduled, and had oocyte vitrification after ovarian stimulation with antagonist protocol...
May 2, 2018: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29783037/premature-progesterone-rise-on-day-of-hcg-negatively-correlated-with-live-birth-rate-in-ivf-cycles-an-analysis-of-1-022-cycles
#4
Lepage Julien, Keromnès Gwenola, Sylvie Epelboin, Luton Dominique, Yazbeck Chadi
OBJECTIVE: To investigate the relationship between serum P levels on the day of hCG administration and pregnancy outcomes in patients undergoing IVF. DESIGN: Retrospective study SETTING: Teaching hospital PATIENTS: A total of 1022 IVF-ICSI cycles, frozen embryo transfer excluded INTERVENTION(S):: Patients- all types of responder - underwent IVF with agonist or antagonist protocols. Clinical outcomes of IVF were analyzed according to plasma P levels. MAIN OUTCOME MEASURE(S): Ongoing pregnancy rates...
May 18, 2018: Journal of Gynecology Obstetrics and Human Reproduction
https://www.readbyqxmd.com/read/29778554/cumulative-live-birth-rates-after-ivf-in-patients-with-polycystic-ovaries-phenotype-matters
#5
Michel De Vos, Stéphanie Pareyn, Panagiotis Drakopoulos, José M Raimundo, Ellen Anckaert, Samuel Santos-Ribeiro, Nikolaos P Polyzos, Herman Tournaye, Christophe Blockeel
RESEARCH QUESTION: Do cumulative live birth rates (CLBR) vary among women with different polycystic ovary syndrome (PCOS) phenotypes who undergo IVF/intracytoplasmic sperm injection (ICSI) treatment? DESIGN: In this retrospective cohort study, data from 567 patients undergoing an assisted reproductive technology (ART) cycle between January 2010 and December 2015 were collected. Demographical traits, cycle characteristics and clinical and laboratory data were analysed...
May 7, 2018: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29775170/rationale-design-and-protocol-of-a-randomized-controlled-trial-of-the-safety-and-efficacy-of-dabigatran-etexilate-versus-dose-adjusted-warfarin-in-patients-with-cerebral-venous-thrombosis
#6
José M Ferro, Francesco Dentali, Jonathan M Coutinho, Adam Kobayashi, Jorge Caria, Marc Desch, Mandy Fraessdorf, Holger Huisman, Hans-Christoph Diener
Rationale To prevent recurrent venous thrombotic events after acute cerebral venous or dural sinus thrombosis, guidelines recommend long-term oral anticoagulation with vitamin K antagonists. Non-vitamin K oral anticoagulant experience in cerebral venous or dural sinus thrombosis is limited to case reports and series. Aim To compare dabigatran with dose-adjusted warfarin in patients with cerebral venous or dural sinus thrombosis for the prevention of recurrent venous thrombotic event. Sample size One hundred and twenty patients...
January 1, 2018: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/29767965/bifunctional-chimera-that-coordinately-targets-human-immunodeficiency-virus-1-hiv-1-envelope-gp120-and-host-cell-ccr5-co-receptor-at-the-virus-cell-interface
#7
Adel A Rashad, Li-Rui Song, Andrew P Holmes, Kriti Acharya, Shiyu Zhang, Zhi-Long Wang, Ebony Gary, Xin Xie, Vanessa Pirrone, Michele A Kutzler, Ya-Qiu Long, Irwin Chaiken
To address the urgent need for new agents to reduce the global occurrence and spread of AIDS, we investigated the underlying hypothesis that antagonists of HIV-1 Envelope (Env) gp120 and host cell co-receptor (CoR) proteins can be covalently joined into bifunctional synergistic combinations that will improve antiviral. A synthetic protocol was established to covalently combine a CCR5 small molecule antagonist and a gp120 peptide triazole antagonist to form the bifunctional chimera. Importantly, the chimeric inhibitor preserved the specific targeting properties of the two separate chimera components, and at the same time exhibited low to sub-nanomolar potencies, in inhibiting cell infection by different pseudoviruses, that were substantially greater than those of a non-covalent mixture of individual components...
May 16, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29766148/endogenous-luteinizing-hormone-concentration-and-ivf-outcome-during-ovarian-stimulation-in-fixed-versus-flexible-gnrh-antagonist-protocols-an-rct
#8
Raffaella Depalo, Paolo Trerotoli, Annarosa Chincoli, Margherita Patrizia Vacca, Giuseppina Lamanna, Ettore Cicinelli
Background: Luteinizing hormone (LH) is essential for normal follicular development and oocyte maturation. In particular, fluctuations of LH during the follicular phase have a significant impact on morphological and functional changes of the oocyte and determine its meiotic status and ability to be fertilized. Objective: This prospective randomized controlled trial examined effects of endogenous follicular phase LH levels on oocyte maturity and IVF outcomes in fixed vs...
March 2018: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29765614/bivalirudin-versus-heparin-in-primary-pci-clinical-outcomes-and-cost-analysis
#9
Pierre Deharo, Thomas W Johnson, Hazim Rahbi, Raveen Kandan, Ruth Bowles, Abdul Mozid, Stephen Dorman, Julian W Strange, Andreas Baumbach
Background: The evidence for benefits of bivalirudin over heparin has recently been challenged. We aimed to analyse the safety and cost-effectiveness following reintroduction of heparin instead of bivalirudin as the standard anticoagulation for primary percutaneous coronary intervention (PPCI) in a high-volume centre. Methods and results: This analysis was an open-label, prospective registry including all patients admitted to our centre for PPCI from April 2014 to April 2016...
2018: Open Heart
https://www.readbyqxmd.com/read/29749291/antithrombotic-therapy-in-pediatric-ventricular-assist-devices-multicenter-survey-of-the-european-excor-pediatric-investigator-group
#10
Oliver Miera, Katharina L Schmitt, Hakan Akintuerk, Angele Boet, Robert Cesnjevar, Teresa Chila, Thilo Fleck, Ranny Goldwasser, Luis G Guereta, Beatrice Heineking, Juergen Hoerer, Alexander Horke, Tain Y Hsia, Michael Huebler, Andrzej Kansy, Ann Karimova, Bohdan Maruszewski, Constancio Medrano, Szymon Pawlak, Zdenka Reinhardt, Birgitta Romlin, Eugen Sandica, Florian Schmidt, René Schramm, Martin Schweiger, Joanna Śliwka, Brigitte Stiller, Josef Thul, Antonio Amodeo
OBJECTIVES: Mechanical circulatory support for pediatric heart failure patients with the Berlin Heart EXCOR ventricular assist system is the only approved and established bridging strategy for recovery or heart transplantation. In recent years, the burden of thromboembolic events has led to modifications of the recommended antithrombotic therapy. Therefore, we aimed to assess modifications of antithrombotic practice among the European EXCOR Pediatric Investigator Group members. METHODS: We sent a questionnaire assessing seven aspects of antithrombotic therapy to 18 European hospitals using the EXCOR device for children...
May 1, 2018: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29745251/amd3100-ameliorates-cigarette-smoke-induced-emphysema-like-manifestations-in-mice
#11
Daria Barwinska, Houssam Oueini, Christophe Poirier, Marjorie E Albrecht, Natalia V Bogatcheva, Matthew J Justice, Jacob Saliba, Kelly S Schweitzer, Hal E Broxmeyer, Keith L March, Irina Petrache
We have shown that cigarette smoke (CS)-induced pulmonary emphysema-like manifestations are preceded by marked suppression of the number and function of bone marrow hematopoietic progenitor cells (HPC). To investigate if a limited availability of HPC may contribute to CS-induced lung injury, we used an FDA-approved antagonist of the interactions of SDF-1 with its receptor CXCR4 to promote intermittent HPC mobilization and tested its ability to limit emphysema-like injury following chronic CS. We administered AMD3100 (5mg/kg) to mice during a chronic CS exposure protocol of up to 24 weeks...
May 10, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29731924/the-spectrum-of-histopathological-changes-in-the-renal-allograft-a-12-months-protocol-biopsy-study
#12
Galina Severova-Andreevska, Ladislava Grcevska, Gordana Petrushevska, Koco Cakalaroski, Aleksandar Sikole, Olivera Stojceva-Taneva, Ilina Danilovska, Ninoslav Ivanovski
INTRODUCTION: Renal transplantation became a routine and successful medical treatment for Chronic Kidney Disease in the last 30 years all over the world. Introduction of Luminex based Single Antigen Beads (SAB) and recent BANFF consensus of histopathological phenotypes of different forms of rejection enables more precise diagnosis and changes the therapeutic approach. The graft biopsies, protocol or cause, indicated, remain a golden diagnostic tool for clinical follow up of kidney transplant recipients (KTR)...
April 15, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29730624/optimal-thromboprophylaxis-in-elderly-chinese-patients-with-atrial-fibrillation-chioteaf-registry-protocol-for-a-prospective-observational-nationwide-cohort-study
#13
Yutao Guo, Yutang Wang, Xiaoying Li, Zaoliang Shan, Xiangmin Shi, Guorong Xi, Gregory Y H Lip
INTRODUCTION: Atrial fibrillation (AF) is a worldwide healthcare burden that is associated with the ageing population. Elderly patients with AF with multiple comorbidities usually present with a high risk of thromboembolism and bleeding. Limited prospective data are available from Asian cohorts on the epidemiology and complications of AF. The present prospective cohort study aims to explore contemporary antithrombotic strategies among the elderly Chinese population in the new era of non-vitamin K antagonist oral anticoagulants and to compare the clinical characteristics and outcomes between Chinese and European AF populations...
May 5, 2018: BMJ Open
https://www.readbyqxmd.com/read/29718716/complex-chromosomal-aberrations-in-a-fetus-originating-from-oocytes-with-smooth-endoplasmic-reticulum-ser-aggregates
#14
Ioannis A Sfontouris, George T Lainas, Tryfon G Lainas, Efthimios Faros, Maria Banti, Katerina Kardara, Katerina Anagnostopoulou, Harris Kontos, George K Petsas, Efstratios M Kolibianakis
The presence of smooth endoplasmic reticulum aggregates (SERa) in the ooplasm is considered as the most severe oocyte dysmorphism due to its serious and potentially lethal outcomes in offspring. In the present case report, a couple underwent their first intracytoplasmic sperm injection (ICSI) cycle using a gonadotrophin releasing hormone (GnRH) antagonist protocol, followed by fetal ultrasound scanning and amniocentesis. SERa were observed in all oocytes retrieved. A singleton pregnancy was established. The second trimester fetal ultrasound scan revealed a female fetus with overlapping fingers in both hands, and amniocentesis was performed for the detection of chromosomal abnormalities...
May 2, 2018: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/29716637/is-intravenously-administered-subdissociative-dose-ketamine-non-inferior-to-morphine-for-prehospital-analgesia-the-ketamorph-study-study-protocol-for-a-randomized-controlled-trial
#15
Clément Le Cornec, Said Lariby, Vivien Brenckmann, Jean Benoit Hardouin, Claude Ecoffey, Marion Le Pottier, Philippe Fradin, Hélène Broch, Amine Kabbaj, Yannick Auffret, Florence Deciron, Céline Longo, François Javaudin, Quentin Le Bastard, Joël Jenvrin, Emmanuel Montassier
BACKGROUND: Acute pain is a common condition among prehospital patients and prompt management is pivotal. Opioids are the most frequently analgesics used in the prehospital setting. However, opioids are highly addictive, and some patients may develop opioid dependence, even when they are exposed to brief opioid treatments. Therefore, alternative non-opioid analgesia should be developed to manage pain in the prehospital setting. Used at subdissociative doses, ketamine, a noncompetitive N-methyl-D-aspartate and glutamate receptor antagonist, provides analgesic effects accompanied by preservation of protective airway reflexes...
May 2, 2018: Trials
https://www.readbyqxmd.com/read/29706375/balixafortide-plus-eribulin-in-her2-negative-metastatic-breast-cancer-a-phase-1-single-arm-dose-escalation-trial
#16
Sonia Pernas, Miguel Martin, Peter A Kaufman, Marta Gil-Martin, Patricia Gomez Pardo, Sara Lopez-Tarruella, Luis Manso, Eva Ciruelos, Jose Alejandro Perez-Fidalgo, Cristina Hernando, Foluso O Ademuyiwa, Katherine Weilbaecher, Ingrid Mayer, Timothy J Pluard, Maria Martinez Garcia, Linda Vahdat, Jose Perez-Garcia, Achim Wach, Debra Barker, Samson Fung, Barbara Romagnoli, Javier Cortes
BACKGROUND: The C-X-C chemokine receptor type 4 (CXCR4)-stromal cell-derived factor-1α (SDF-1α) axis regulates function and trafficking of immune cells and the tumour microenvironment. CXCR4 antagonists have been shown to enhance the activity of different anticancer treatments in preclinical models. We assessed the safety, tolerability, pharmacokinetics, and preliminary phase 1 activity of the CXCR4 antagonist, balixafortide, in combination with eribulin chemotherapy in patients with heavily pretreated, relapsed metastatic breast cancer...
April 26, 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29704617/the-role-of-small-molecule-kit-protein-tyrosine-kinase-inhibitors-in-the-treatment-of-neoplastic-disorders
#17
REVIEW
Robert Roskoski
The Kit proto-oncogene was found as the consequence of the discovery of the feline v-kit sarcoma oncogene. Stem cell factor (SCF) is the Kit ligand and it mediates Kit dimerization and activation. The Kit receptor contains an extracellular segment that is made up of five immunoglobulin-like domains (D1/2/3/4/5), a transmembrane segment, a juxtamembrane segment, a protein-tyrosine kinase domain that contains an insert of 77 amino acid residues, and a carboxyterminal tail. Activating somatic mutations in Kit have been documented in various neoplasms including gastrointestinal stromal tumors (GIST), mast cell overexpression (systemic mastocytosis), core-binding factor acute myeloid leukemias (AML), melanomas, and seminomas...
April 25, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29695208/comparison-of-modified-agonist-mild-stimulation-and-antagonist-protocols-for-in-vitro-fertilization-in-patients-with-diminished-ovarian-reserve
#18
Rong Yu, Hao Jin, Xuefeng Huang, Jinju Lin, Peiyu Wang
Objective To compare the efficacy of three protocols for ovarian stimulation in patients with diminished ovarian reserve during in vitro fertilization (IVF) treatment. Methods This prospective randomized study enrolled patients with diminished ovarian reserve who underwent cycles of IVF or intracytoplasmic sperm injection. The patients were randomly divided into three groups: a modified gonadotrophin releasing hormone (GnRH) agonist protocol (group A); (ii) a mild stimulation protocol (group B); or (iii) an antagonist protocol (group C)...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29687299/anticoagulation-reversal-in-vitamin-k-antagonist-associated-intracerebral-hemorrhage-a-systematic-review
#19
Darae Ko, Zayd Razouki, James Otis, Erika Marulanda-Londoño, Elaine M Hylek
The effect of rapid anticoagulation reversal on mortality and functional outcome in vitamin K antagonist-associated intracerebral hemorrhage (VKA-ICH) is uncertain. Given the approval of idarucizumab for dabigatran reversal and pending approval for andexanet alfa for reversal of factor Xa inhibitors, a systematic appraisal of the effectiveness of reversal for VKA-ICH would provide a bench mark for current practice. We performed PubMed searches and reviewed current guidelines. Using pre-specified inclusion and exclusion criteria, studies were reviewed by two physicians independently...
April 23, 2018: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/29685684/characterization-of-protease-activated-receptor-par-ligands-parmodulins-are-reversible-allosteric-inhibitors-of-par1-driven-calcium-mobilization-in-endothelial-cells
#20
Disha M Gandhi, Mark W Majewski, Ricardo Rosas, Kaitlin Kentala, Trevor J Foster, Eric Greve, Chris Dockendorff
Several classes of ligands for Protease-Activated Receptors (PARs) have shown impressive anti-inflammatory and cytoprotective activities, including PAR2 antagonists and the PAR1-targeting parmodulins. In order to support medicinal chemistry studies with hundreds of compounds and to perform detailed mode-of-action studies, it became important to develop a reliable PAR assay that is operational with endothelial cells, which mediate the cytoprotective effects of interest. We report a detailed protocol for an intracellular calcium mobilization assay with adherent endothelial cells in multiwell plates that was used to study a number of known and new PAR1 and PAR2 ligands, including an alkynylated version of the PAR1 antagonist RWJ-58259 that is suitable for the preparation of tagged or conjugate compounds...
April 6, 2018: Bioorganic & Medicinal Chemistry
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