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Microorganisms-07-00521-V2.Pdf
microorganisms Review Are Community Acquired Respiratory Viral Infections an Underestimated Burden in Hematology Patients? Cristian-Marian Popescu 1,* , Aurora Livia Ursache 2, Gavriela Feketea 1 , Corina Bocsan 3, Laura Jimbu 1, Oana Mesaros 1, Michael Edwards 4,5, Hongwei Wang 6, Iulia Berceanu 7, Alexandra Neaga 1 and Mihnea Zdrenghea 1,7,* 1 Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Babes str., 400012 Cluj-Napoca, Romania; [email protected] (G.F.); [email protected] (L.J.); [email protected] (O.M.); [email protected] (A.N.) 2 The Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăs, tur 3-5, 400372 Cluj-Napoca, Romania; [email protected] 3 Department of Pharmacology, Toxicology and Clinical Pharmacology, Iuliu Ha¸tieganuUniversity of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania; [email protected] 4 National Heart and Lung Institute, St Mary’s Campus, Imperial College London, London W2 1PG, UK; [email protected] 5 Medical Research Council (MRC) and Asthma UK Centre in Allergic Mechanisms of Asthma, London W2 1PG, UK 6 School of Medicine, Nanjing University, 22 Hankou Road, Nanjing 210093, China; [email protected] 7 Department of Hematology, Ion Chiricuta Oncology Institute, 34-36 Republicii Street, 400015 Cluj-Napoca, Romania; [email protected] * Correspondence: [email protected] (C.-M.P.); [email protected] (M.Z.) Received: 8 October 2019; Accepted: 31 October 2019; Published: 2 November 2019 Abstract: Despite a plethora of studies demonstrating significant morbidity and mortality due to community-acquired respiratory viral (CRV) infections in intensively treated hematology patients, and despite the availability of evidence-based guidelines for the diagnosis and management of respiratory viral infections in this setting, there is no uniform inclusion of respiratory viral infection management in the clinical hematology routine. -
Drug Repurposing for Identification of Potential Inhibitors Against SARS-Cov-2 Spike Receptor-Binding Domain: an in Silico Approach
Indian J Med Res 153, January & February 2021, pp 132-143 Quick Response Code: DOI: 10.4103/ijmr.IJMR_1132_20 Drug repurposing for identification of potential inhibitors against SARS-CoV-2 spike receptor-binding domain: An in silico approach Santosh Kumar Behera1, Namita Mahapatra1, Chandra Sekhar Tripathy1 & Sanghamitra Pati2 1Health Informatics Centre, 2ICMR-Regional Medical Research Centre, Bhubaneswar, Odisha, India Received April 10, 2020 Background & objectives: The world is currently under the threat of coronavirus disease 2019 (COVID-19) infection, caused by SARS-CoV-2. The objective of the present investigation was to repurpose the drugs with potential antiviral activity against receptor-binding domain (RBD) of SARS-CoV-2 spike (S) protein among 56 commercially available drugs. Therefore, an integrative computational approach, using molecular docking, quantum chemical calculation and molecular dynamics, was performed to unzip the effective drug-target interactions between RBD and 56 commercially available drugs. Methods: The present in silico approach was based on information of drugs and experimentally derived crystal structure of RBD of SARS-CoV-2 S protein. Molecular docking analysis was performed for RBD against all 56 reported drugs using AutoDock 4.2 tool to screen the drugs with better potential antiviral activity which were further analysed by other computational tools for repurposing potential drug or drugs for COVID-19 therapeutics. Results: Drugs such as chalcone, grazoprevir, enzaplatovir, dolutegravir, daclatasvir, tideglusib, presatovir, remdesivir and simeprevir were predicted to be potentially effective antiviral drugs against RBD and could have good COVID-19 therapeutic efficacy. Simeprevir displayed the highest binding affinity and reactivity against RBD with the values of −8.52 kcal/mol (binding energy) and 9.254 kcal/mol (band energy gap) among all the 56 drugs under investigation. -
Development of Novel Anti-Respiratory Syncytial Virus Therapies
Development of Novel Anti-Respiratory Syncytial Virus Therapies by Michael J Norris A thesis submitted in conformity with the requirements for the degree of Doctor of Philosophy Laboratory Medicine and Pathobiology University of Toronto © Copyright by Michael J Norris 2017 Development of Novel Anti-Respiratory Syncytial Virus Therapies Michael J Norris Doctor of Philosophy Laboratory Medicine and Pathobiology University of Toronto 2017 Abstract Respiratory syncytial virus (RSV) is a leading cause of mortality in infants and young children. Despite the RSV disease burden, no vaccine is available and treatment remains non-specific. New drug candidates are needed to combat RSV. Towards this goal, we investigated two broad strategies to control RSV infection. First, we examined the utility of delivering an anti-4-1BB agonist antibody to enhance CD8 T cell costimulation in a mouse model of RSV infection. This strategy enhanced CD8 T cell numbers, however failed to reduce RSV titers in the lung. We found that this was likely due to reduced RSV specific CD8 T cells in the lung. Overall, this strategy did not attenuate RSV associated disease outcomes and was associated with increased morbidity. Second, we screened over 2000 FDA approved compounds to identify approved drugs with novel anti-RSV activity. Cardiac glycosides, inhibitors of the membrane bound Na+/K+-ATPase, were identified to have anti-RSV activity. Cardiac glycosides diminished RSV infection in HEp-2 cells and in primary human airway epithelial cells grown at an air liquid interface. Digoxin, an FDA approved cardiac glycoside, was further able to inhibit RSV infection of community isolates of RSV in primary nasal epithelial cells. -
Communication DOI: 10.5582/Ddt.2020.01012
58 Drug Discoveries & Therapeutics. 2020; 14(1):58-60. Communication DOI: 10.5582/ddt.2020.01012 Discovering drugs to treat coronavirus disease 2019 (COVID-19) Liying Dong1, Shasha Hu2, Jianjun Gao1,* 1 Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao, Shandong, China; 2 Department of Pathology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China. SUMMARY The SARS-CoV-2 virus emerged in December 2019 and then spread rapidly worldwide, particularly to China, Japan, and South Korea. Scientists are endeavoring to find antivirals specific to the virus. Several drugs such as chloroquine, arbidol, remdesivir, and favipiravir are currently undergoing clinical studies to test their efficacy and safety in the treatment of coronavirus disease 2019 (COVID-19) in China; some promising results have been achieved thus far. This article summarizes agents with potential efficacy against SARS-CoV-2. Keywords novel coronavirus, pneumonia, COVID-19, 2019-nCoV, SARS-CoV-2 The virus SARS-CoV-2 (formerly designated 2019- day. Ribavirin should be administered via intravenous nCoV) emerged in December 2019 and then spread infusion at a dose of 500 mg for adults, 2 to 3 times/ rapidly worldwide, particularly to China, Japan, and day in combination with IFN-α or lopinavir/ritonavir. South Korea. As of February 21, 2020, a total of Chloroquine phosphate is orally administered at a dose 76,288 confirmed cases of coronavirus disease 2019 of 500 mg (300 mg for chloroquine) for adults, 2 times/ (COVID-19) and 2,345 deaths have been reported in day. Arbidol is orally administered at a dose of 200 mg mainland China (1). -
RSV in the Elderly. Troubled Past, Dark Present, Bright Future?
RSV infection in the elderly troubled past, dark present, bright future ? Nicolas Dauby MD, PhD, Infectious Diseases Department - CHU Saint Pierre 4th April 2019 – SBIMC-SBP-BSGG Symposium In collaboration with Valérie Martinet MD, PhD, Geriatrics, CHU Saint Pierre Outline 1. Introduction 2. Mechanisms of RSV disease in elderly 3. Epidemiology and burden 4. Future therapeutical intervention 5. Prevention : vaccination Respiratory syncytial virus (RSV) • Discovered in 1956 • Enveloped RNA virus • Common & ubiquitous respiratory virus • North hemisphere : Annual epidemics during the cold season (nov-march) • A & B subtypes Seasonality of RSV infection Alberta, Canada 2008-2015 Proportion of RSV positive assay by luminex Assay Griffiths CMR 2017 Age as a major determinant of RSV disease Most common respiratory infection in infants 95% infected before 2 years Openshaw Annual Rev Immunol 2017 1. Introduction 2. Mechanisms of RSV disease in elderly 3. Epidemiology and burden 4. Future therapeutical intervention 5. Prevention : vaccination Pathways leading to antiviral defense & immunopathology during RSV infection Protective vs Harmful immunity Openshaw, Annual Rev Immunol 2017 Impact of aging on systemic immune functions Defective phagocytosis Defective phagocytosis Reduced functions Inflammaging Lower effector functions Reduced proliferation The ageing lung Alveolar epithelial cells Pro-Inf. Cytokines Neutrophils Functionality Bowdish Chest 2019 Mechanisms of diseases in the elderly • Lower frequency of RSV-specific CD8 T cells – Associated -
Respiratory Syncytial Virus Entry and How to Block It
REVIEWS Respiratory syncytial virus entry and how to block it Michael B. Battles1 and Jason S. McLellan 2* Abstract | Respiratory syncytial virus (RSV) is a leading cause of lower respiratory tract disease in young children and elderly people. Although the virus was isolated in 1955, an effective RSV vaccine has not been developed, and the only licensed intervention is passive immunoprophylaxis of high-risk infants with a humanized monoclonal antibody. During the past 5 years, however, there has been substantial progress in our understanding of the structure and function of the RSV glycoproteins and their interactions with host cell factors that mediate entry. This period has coincided with renewed interest in developing effective interventions, including the isolation of potent monoclonal antibodies and small molecules and the design of novel vaccine candidates. In this Review , we summarize the recent findings that have begun to elucidate RSV entry mechanisms, describe progress on the development of new interventions and conclude with a perspective on gaps in our knowledge that require further investigation. Nasopharynx Respiratory syncytial virus (RSV) was first isolated increase mucus production and inflammation, leading The upper part of the pharynx in 1955 from chimpanzees suffering from respiratory to a narrowing of the airway that results in bronchiolitis that connects with the nasal illness at the Walter Reed Army Institute of Research in young children and acute respiratory illness in older cavity. in the United States1. In the following years, the virus adults or those with underlying chronic conditions13. Bronchioles was also isolated from infants with severe lower respira- During a series of clinical trials in the 1960s, aberrant 2,3 Small tubes in the lung through tory illness . -
2019 Icar Program & Abstracts Book
Hosted by the International Society for Antiviral Research (ISAR) ND International Conference 32on Antiviral Research (ICAR) Baltimore MARYLAND PROGRAM and USA Hyatt Regency BALTIMORE ABSTRACTS May 12-15 2019 ND TABLE OF International Conference CONTENTS 32on Antiviral Research (ICAR) Daily Schedule . .3 Organization . 4 Contributors . 5 Keynotes & Networking . 6 Schedule at a Glance . 7 ISAR Awardees . 10 The 2019 Chu Family Foundation Scholarship Awardees . 15 Speaker Biographies . 17 Program Schedule . .25 Posters . 37 Abstracts . 53 Author Index . 130 PROGRAM and ABSTRACTS of the 32nd International Conference on Antiviral Research (ICAR) 2 ND DAILY International Conference SCHEDULE 32on Antiviral Research (ICAR) SUNDAY, MAY 12, 2019 › Women in Science Roundtable › Welcome and Keynote Lectures › Antonín Holý Memorial Award Lecture › Influenza Symposium › Opening Reception MONDAY, MAY 13, 2019 › Women in Science Award Lecture › Emerging Virus Symposium › Short Presentations 1 › Poster Session 1 › Retrovirus Symposium › ISAR Award of Excellence Presentation › PechaKucha Event with Introduction of First Time Attendees TUESDAY, MAY 14, 2019 › What’s New in Antiviral Research 1 › Short Presentations 2 & 3 › ISAR Award for Outstanding Contributions to the Society Presentation › Career Development Panel › William Prusoff Young Investigator Award Lecture › Medicinal Chemistry Symposium › Poster Session 2 › Networking Reception WEDNESDAY, MAY 15, 2019 › Gertrude Elion Memorial Award Lecture › What’s New in Antiviral Research 2 › Shotgun Oral -
Measuring Clinical and Virologic Outcomes in Different Age and Risk Groups
Measuring Clinical and Virologic Outcomes in Different Age and Risk Groups Prabha Viswanathan, MD Senior Medical Officer Division of Antiviral Products Center for Drug Evaluation and Research, FDA ESCMID eLibrary © by author Overview • Common respiratory viruses and factors impacting the illness they cause • Endpoints in clinical trials – general concepts • Clinical and virologic outcomes in clinical trials of respiratory antivirals • Case Examples in antiviral drug development – Influenza – RSV ESCMID eLibrary 2 © by author Adenovirus (ADV) Coronavirus (CoV) Common Enterovirus (EV) Respiratory Human Metapneumovirus (hMPV) Viruses Influenza Parainfluenza (PIV) Respiratory Syncytial Virus (RSV) Rhinovirus (HRV) ESCMID eLibrary 3 © by author Virus + Host Factors = Clinical Disease ESCMID eLibrary 4 4 © by author Anatomy Environment Health Status Comorbidity Immune Function ESCMID eLibrary 5 5 © by author Impact of Host Factors • The same virus causes a different clinical illness in various population subgroups • The virus causes a similar disease across groups, but host factors affect the severity of the clinical illness ESCMID eLibrary 6 © by author Examples: Virus Causes Different Disease Manifestation RSV Bronchiolitis URI LRTI PIV Croup URI ESCMIDURI = Upper Respiratory Infection; LRTI = LowereLibrary Respiratory Tract Infection 7 © by author Example: Virus Causes Similar Disease Influenza Common signs and symptoms: fever, headache, myalgia, malaise, URI symptoms, cough Populations at risk for more severe disease – respiratory failure ESCMID eLibrary 8 © by author Relevance to Clinical Trials • Understanding when diseases are similar and different is important when designing trials for new antivirals, particularly for endpoint selection • Different endpoints may be needed for trials evaluating the same drug and same virus in different populations (e.g. RSV) • Similar endpoints could be utilized for different drugs and viruses that cause similar clinical illness (e.g. -
Respiratory Syncytial Virus
RSV Respiratory syncytial virus RSV (Respiratory syncytial virus) is a leading cause of acute respiratory infections. RSV can exploit host immunity and cause a strong inflammatory response that leads to lung damage and virus dissemination. There is a single RSV serotype with two major antigenic subgroups, A and B. RSV is a non-segmented negative-sense single-stranded enveloped RNA virus that belongs to the family of Paramyxoviridae, genus Pneumovirus, subfamily Pneumovirinae. Its 10 genes encode 11 proteins since two overlapping open reading frames in the M2 mRNA yield two distinct matrix proteins, M2-1 and M2-2. The viral envelope contains three proteins, the G glycoprotein, the fusion (F) glycoprotein, and the small hydrophobic (SH) protein. The RSV virus comprises five other structural proteins, the large (L) protein, nucleocapsid (N), phosphoprotein (P), matrix (M), and M2-1, and two non-structural proteins (NS1 and NS2). www.MedChemExpress.com 1 RSV Inhibitors Ac-CoA Synthase Inhibitor1 ALS-8112 Cat. No.: HY-104032 Cat. No.: HY-12983 Ac-CoA Synthase Inhibitor1 is a potent, reversible ALS-8112 is a potent and selective respiratory acetate-dependent acetyl-CoA synthetase 2 syncytial virus (RSV) polymerase inhibitor. The (ACSS2) inhibitor with an IC50 of 0.6 µM. Ac-CoA 5'-triphosphate form of ALS-8112 inhibits RSV Synthase Inhibitor1 inhibits the respiratory polymerase with an IC50 of 0.02 μM. syncytial virus (RSV). Purity: 99.23% Purity: 99.97% Clinical Data: No Development Reported Clinical Data: No Development Reported Size: 10 mM × 1 mL, 5 mg, 10 mg, 25 mg, 50 mg Size: 10 mM × 1 mL, 1 mg, 5 mg, 10 mg, 50 mg, 100 mg Amentoflavone ent-11β-Hydroxyatis-16-ene-3,14-dione (Didemethyl-ginkgetin) Cat. -
27-2-Erraigkarl HASS at TORNEYS
Dec. 24, 1968 A. LENZ ETAL 3,418,383 PRODUCTION OF ALKALI METAL, ALCOHOLATES Filed Nov. 8, 1966 g-Lower and higher olcohol vapors Lower Olcohol Condenser X Distillation column Reactor column Receiver Zy -IO 3 lower alcohol Higher olcohol Olcoholote vopor higher olcohol Liquid alcohol Solution S mixture Resevoir Superheater 15 a - 13 Higher alcohol Pump1 D HigherOlcohol olcoholote NVENTORS ARNOLD LENZ OTTO BLEH 27-2-erraigKARL HASS AT TORNEYS. 3,418,383 United States Patent Office Patented Dec. 24, 1968 2 e.g., isopropanol, butanol - (2), pentanol - (2), pentanol 3,418,383 (3), 2-methylbutanol - (3) and the like; and the tertiary PRODUCTION OF ALKALIMETAL ALCOHOLATES alcohols, e.g., 2-methylpropanol-(2), 2-methylbutanol-(2) Arnold Lenz, Gerstenkamp, Otto Bleh, Bergheim, and and the like. In addition to the univalent aliphatic alco Karl Hass, Niederkassel, Germany, assignors to Dyna hols, cycloaliphatic alcohols can be interchanged such as: mit Nobel Aktiengesellschaft cyclopropanol, cyclobutanol, cyclopentanol, cyclohexanol, Claims Filedpriority, Nov. application 8, 1966, Germany,Ser. No. 594,333 Nov. 10, 1965, and the alkyl-substituted derivatives thereof having a total D 48,614 of up to 12 carbon atoms. 9 Claims. (CI. 260-632) Both the alkali alcoholates of methanol and those of O ethanol can be used as starting products, and the alkali metal of the alcoholate can be sodium, potassium and ABSTRACT OF THE DISCLOSURE lithium, and, of course, cesium and rubidium as well. The improved interchange reaction between a lower The process of the invention is to be explained by alcoholate of an alkali metal and a higher alcohol to pro means of the annexed drawing which is a flow diagram of duce a higher alcoholate of the alkali metal, wherein the 15 the process. -
United States Patent Office Patented Jan
3,164,611 United States Patent Office Patented Jan. 5, 1965 1. 2 reaction, care must be taken in applying this method 3,164,611 to the oxidation of heat sensitive compounds. OXDATION OF PRIMARY AND SECONDARY AL COHOLS TO THE CORRESPONDING CARBONY These organic base-chromium trioxide complexes are CSCMPOUNDS (USNG A TERTARY AMENE particularly useful oxidizing agents for effecting the oxida (CERORySSJR, TROXDE COMPLEX tion of alcohols having at least one hydrogen atom at Lewis H. Sarett, Friscetos, N.J., assigaor to Merck & Co., tached to the carbon atom bearing the hydroxyl sub Inc., Rahway, N.J., a corporatioia of New Jersey Stituent, i.e., primary and secondary alcohols, to the No Drawing. Fied any 26, 1956, Ser. No. 686,463 corresponding carbonyl compounds. Thus, primary al 13 Caias. (C. 260-349.9) cohols are oxidized to aldehydes, and secondary alcohols IO are converted to ketones. This invention relates to a novel process for the oxida This method of oxidizing alcohols to the corresponding tion of chemical compounds, and more particularly to carbonyl compounds is generally applicable to all pri an improved method for the oxidation of primary and mary and secondary alcohols. Examples of such al Secondary alcohols to the corresponding carbonyl com cohols that might be mentioned are aliphatic alcohols pounds. 5 such as alkanals, alkenols, alkinois, polyhydric alkanols, This application is a continuation-in-part application polyhydric alkenols and polyhydric alkinols; aralkyl al of my application Serial No. 263,016, filed December cohols; aralkenyl alcohols; aralkinyl alcohols; alicyclic 22, 1951, now abandoned, and my copending application alcohols such as cycloalkyl, cycloalkenyl, cycloalkinyl, Serial No. -
A Review on Green Liquid Fuels for the Transportation Sector: a Prospect of Microbial Solutions to Climate Change
Biofuel Research Journal 23 (2019) 995-1024 Journal homepage: www.biofueljournal.com Review Paper A review on green liquid fuels for the transportation sector: a prospect of microbial solutions to climate change Hamed Kazemi Shariat Panahi1,2, Mona Dehhaghi1,2, James E. Kinder 3, Thaddeus Chukwuemeka Ezeji3,* 1 Faculty of Medicine and Health Sciences, Macquarie University, NSW, Australia. 2Department of Microbial Biotechnology, School of Biology and Centre of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran. 3Department of Animal Sciences, Ohio State Agricultural Research and Development Center (OARDC), The Ohio State University, Wooster, USA. HIGHLIGHTS GRAPHICAL ABSTRACT Microbial-based biofuel as a promising waste-to- energy technology has been scrutinized. Microbial production of bio-jet fuel is possible through DSHC, AtJ, and GtL. Future application of ammonia as bio-fuel requires special design of ICE. Cons and pros of microbial liquid fuels over gasoline have been outlined. Conversion of microbial liquid fuel into fuel derivatives has been discussed. ARTICLE INFO ABSTRACT Article history: Environmental deterioration, global climate change, and consequent increases in pollution-related health problems among Received 12 July 2019 populations have been attributed to growing consumption of fossil fuels in particular by the transportation sector. Hence, Received in revised form 18 August 2019 replacing these energy carriers, also known as major contributors of greenhouse gas emissions, with biofuels have been regarded Accepted 20 August 2019 as a solution to mitigate the above-mentioned challenges. On the other hand, efforts have been put into limiting the utilization Available online 1 September 2019 of edible feedstocks for biofuels production, i.e., first generation biofuels, by promoting higher generations of these eco-friendly alternatives.