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Development of Antiviral Agents for Enteroviruses
Journal of Antimicrobial Chemotherapy (2008) 62, 1169–1173 doi:10.1093/jac/dkn424 Advance Access publication 18 October 2008 Development of antiviral agents for enteroviruses Tzu-Chun Chen1–3, Kuo-Feng Weng1,2, Shih-Cheng Chang1,2, Jing-Yi Lin1,2, Peng-Nien Huang1,2 and Shin-Ru Shih1,2,4,5* 1Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan, Taiwan; 2Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan, Taiwan; 3Institute Downloaded from https://academic.oup.com/jac/article/62/6/1169/774341 by guest on 26 September 2021 of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan; 4Clinical Virology Laboratory, Chang Gung Memorial Hospital, Taoyuan, Taiwan; 5Division of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Chunan, Taiwan Enteroviruses (EVs) are common human pathogens that are associated with numerous disease symptoms in many organ systems of the body. Although EV infections commonly cause mild or non- symptomatic illness, some of them are associated with severe diseases such as CNS complications. The current absence of effective vaccines for most viral infection and no available antiviral drugs for the treatment of EVs highlight the urgency and significance of developing antiviral agents. Several key steps in the viral life cycle are potential targets for blocking viral replication. This article reviews recent studies of antiviral developments for EVs based on various molecular targets that interrupt viral attach- ment, viral translation, polyprotein processing and RNA replication. Keywords: capsid proteins, viral proteases, viral RNA replication, 50 untranslated region Introduction EVs such as echovirus 6, 9 and 30 and CVB5 were the most common causes of aseptic meningitis in children.4 EV70 and Enteroviruses (EVs) are a common cause of infections in CVA24 were associated with acute haemorrhagic conjunctivitis.4 humans, especially children. -
Drug Name Peramivir Brand Name(S)
Antimicrobial Stewardship Program Drug Name Peramivir Brand Name(s) Rapivab Drug Class Neuraminidase inhibitor Restriction level Restricted to Infectious Diseases and Pulmonology/Critical Care Accepted Indications Management of Influenza A or B in patients with the following: Strict NPO (no NGT/OGT/G-tube/J-tube) Concerns about poor gut absorption (i.e. ileus) Unacceptable Uses Management of Influenza A or B in a patient who can tolerate oral therapy whether by mouth, G-tube, or J-tube Side Effects Insomnia (3%), Diarrhea (8%), Hyperglycemia (serum glucose >160 mg/dL, 5%), Neutropenia (8%), Increased serum ALT/AST (3%), Increased CPK, 4% Pregnancy Class C Dosing Adult: 600 mg IV once* Renal dosing: - CrCl 30-50 mL/min: 200 mg dose IV once* - CrCl 15-29 mL/min: 100 mg dose IV once* - CrCl <10 mL/min or ESRD on HD: 100 mg dose once after HD‡ Pediatrics: - Children: 2-12 years: 12 mg/kg as a single dose; maximum 600mg - Adolescents ≥13 years: Refer to adult dosing Renal dosing: Infants, Children, and Adolescents <18 years: Note: Dosage adjustment based on renal function estimated using the Schwartz equation. CrCl ≥50 mL/minute/1.73 m2: No adjustment necessary CrCl 31 to 49 mL/minute/1.73 m2: 29 to 30 days of life: 1.5 mg/kg/dose once daily for 5 to 10 days 31 to 90 days of life: 2 mg/kg/dose once daily for 5 to 10 days 91 to 180 days of life: 2.5 mg/kg/dose once daily for 5 to 10 days 181 days of life through 5 years: 3 mg/kg/dose once daily for 5 to 10 days; maximum dose: 150 mg/dose 6 to 17 years: 2.5 mg/kg/dose once daily for 5 to 10 -
The Evolution of Pleconaril: Modified O-Alkyl Linker Analogs Have
molecules Communication The Evolution of Pleconaril: Modified O-Alkyl Linker Analogs Have Biological Activity towards Coxsackievirus B3 Nancy 1, 2, 1 3 Alexandrina Volobueva y, Anna Egorova y, Anastasia Galochkina , Sean Ekins , Vladimir Zarubaev 1 and Vadim Makarov 2,* 1 Saint-Petersburg Pasteur Institute, Mira str., 14, 197101 Saint Petersburg, Russia; [email protected] (A.V.); [email protected] (A.G.); [email protected] (V.Z.) 2 Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky prospect, 33, build. 2, 119071 Moscow, Russia; [email protected] 3 Collaborations Pharmaceuticals, Inc., 840 Main Campus Drive, Lab 3510, Raleigh, NC 27606, USA; [email protected] * Correspondence: [email protected] These authors contributed equally to this work. y Received: 10 February 2020; Accepted: 13 March 2020; Published: 16 March 2020 Abstract: Coxsackieviruses type B are one of the most common causes of mild upper respiratory and gastrointestinal illnesses. At the time of writing, there are no approved drugs for effective antiviral treatment for Coxsackieviruses type B. We used the core-structure of pleconaril, a well-known antienteroviral drug candidate, for the synthesis of novel compounds with O-propyl linker modifications. Some original compounds with 4 different linker patterns, such as sulfur atom, ester, amide, and piperazine, were synthesized according to five synthetic schemes. The cytotoxicity and bioactivity of 14 target compounds towards Coxsackievirus B3 Nancy were examined. Based on the results, the values of 50% cytotoxic dose (CC50), 50% virus-inhibiting dose (IC50), and selectivity index (SI) were calculated for each compound. Several of the novel synthesized derivatives exhibited a strong anti-CVB3 activity (SI > 20 to > 200). -
Which Drugs Are Most Effective for Recurrent Herpes Labialis?
Evidence-based answers from the clinical inquiries Family Physicians Inquiries Network Eiko Tubridy, MD; Gary Kelsberg, MD Valley Family Residency Which drugs are most Program, Renton, Wash Leilani St Anna, MLIS, effective for recurrent AHIP University of Washington Health Sciences Libraries, herpes labialis? Seattle AssistanT EDITOR EvidEncE-basEd answEr Jon O. neher, MD Valley Family Residency daily oral acyclovir or vala- ing to the agent used: valacyclovir reduces Program, Renton, Wash A cyclovir may help prevent her- both healing time and duration of pain, pes simplex labialis (HSL) recurrences famciclovir reduces both in one dosage (strength of recommendation [SOR]: B, form but not another, and acyclovir reduces meta-analysis of randomized controlled only pain duration (SOR: B, single RCTs). trials [RCTs] with heterogeneous results). Several topical medications (acyclovir, No trials compare oral or topical treat- penciclovir, docosanol) modestly decrease ments for HSL outbreaks against each oth- healing time and pain duration—typically er. Oral antivirals modestly reduce healing by less than a day—and require multiple time and duration of pain, varying accord- doses per day (SOR: B, multiple RCTs). Evidence summary The authors of the meta-analysis noted A systematic review and meta-analysis of the that although 9 studies favored the use of an effectiveness of oral and topical nucleoside antiviral drug, only 4 showed statistically sig- antiviral agents to prevent recurrent HSL in nificant differences when compared with pla- immunocompetent people found 11 RCTs cebo, and none of them had a low risk of bias. with a total of 1250 patients that compared They concluded that the review supported us- an active drug against placebo.1 The medi- ing oral acyclovir and valacyclovir to prevent cations were topical 5% acyclovir, topical 1% recurrent HSL.1 penciclovir, and oral acyclovir, valacyclovir, or famciclovir in various doses. -
Debate Regarding Oseltamivir Use for Seasonal and Pandemic Influenza
Debate Regarding Oseltamivir Use for Seasonal and Pandemic Influenza Aeron Hurt WHO Collaborating Centre for Reference and Research on Influenza, Melbourne, Australia www.influenzacentre.org NA inhibitor antiviral drugs Top view of NA NA inhibitor NA enzyme active site The NA inhibitors Oseltamivir Zanamivir - Oral, IV(?) - Inhaled, IV(?) - Global - Global Peramivir Laninamivir -IV - Inhaled (single) - Japan, - Japan S.Korea, China, US The NA inhibitors Oseltamivir Zanamivir - Oral, IV(?) - Inhaled, IV(?) - Global - Global • Came on the market in many countries in 2000 after clinical studies had been conducted among influenza virus–infected patients with uncomplicated illness. • Oseltamivir is market leader ……due to ease of oral administration • Use for seasonal influenza mainly in Japan and US • With human infections of highly pathogenic influenza A(H5N1) virus from 2003 with a high case‐fatality risks of >50%, governments began to consider antiviral drug administration as a key component of their pandemic response • suitable vaccines would not be available Stockpiling for a pandemic • Oseltamivir was simpler (oral) administration than zanamivir (inhalation) and because of systemic effect of oseltamivir was expected to be appropriate for treatment of highly pathogenic viruses • Oseltamivir was suddenly in high demand! • Roche had warned that need to stockpile to guarantee availability • Since 2005, governments of middle‐income and high‐income countries around the world have spent billions of dollars (estimated) stockpiling oseltamivir (US Gov. Accounting Office). 2009 A(H1N1)pdm09 pandemic • The first pandemic of the 21st century occurred unexpectedly in 2009 after the global spread of a novel virus—influenza A(H1N1)pdm09—of swine (rather than avian) origin. -
Antiviral Agents Active Against Influenza a Viruses
REVIEWS Antiviral agents active against influenza A viruses Erik De Clercq Abstract | The recent outbreaks of avian influenza A (H5N1) virus, its expanding geographic distribution and its ability to transfer to humans and cause severe infection have raised serious concerns about the measures available to control an avian or human pandemic of influenza A. In anticipation of such a pandemic, several preventive and therapeutic strategies have been proposed, including the stockpiling of antiviral drugs, in particular the neuraminidase inhibitors oseltamivir (Tamiflu; Roche) and zanamivir (Relenza; GlaxoSmithKline). This article reviews agents that have been shown to have activity against influenza A viruses and discusses their therapeutic potential, and also describes emerging strategies for targeting these viruses. HXNY In the face of the persistent threat of human influenza A into the interior of the virus particles (virions) within In the naming system for (H3N2, H1N1) and B infections, the outbreaks of avian endosomes, a process that is needed for the uncoating virus strains, H refers to influenza (H5N1) in Southeast Asia, and the potential of to occur. The H+ ions are imported through the M2 haemagglutinin and N a new human or avian influenza A variant to unleash a (matrix 2) channels10; the transmembrane domain of to neuraminidase. pandemic, there is much concern about the shortage in the M2 protein, with the amino-acid residues facing both the number and supply of effective anti-influenza- the ion-conducting pore, is shown in FIG. 3a (REF. 11). virus agents1–4. There are, in principle, two mechanisms Amantadine has been postulated to block the interior by which pandemic influenza could originate: first, by channel within the tetrameric M2 helix bundle12. -
Multipurpose Tenofovir Disoproxil Fumarate Electrospun Fibers for the Prevention of HIV-1 and HSV-2 Infections
University of Louisville ThinkIR: The University of Louisville's Institutional Repository Electronic Theses and Dissertations 8-2016 Multipurpose tenofovir disoproxil fumarate electrospun fibers for the prevention of HIV-1 and HSV-2 infections. Kevin Tyo Follow this and additional works at: https://ir.library.louisville.edu/etd Part of the Other Chemicals and Drugs Commons, Polymer Chemistry Commons, Preventive Medicine Commons, and the Virus Diseases Commons Recommended Citation Tyo, Kevin, "Multipurpose tenofovir disoproxil fumarate electrospun fibers for the prevention of HIV-1 and HSV-2 infections." (2016). Electronic Theses and Dissertations. Paper 2486. https://doi.org/10.18297/etd/2486 This Master's Thesis is brought to you for free and open access by ThinkIR: The University of Louisville's Institutional Repository. It has been accepted for inclusion in Electronic Theses and Dissertations by an authorized administrator of ThinkIR: The University of Louisville's Institutional Repository. This title appears here courtesy of the author, who has retained all other copyrights. For more information, please contact [email protected]. MULTIPURPOSE TENOFOVIR DISOPROXIL FUMARATE ELECTROSPUN FIBERS FOR THE PREVENTION OF HIV-1 AND HSV-2 INFECTIONS By Kevin Tyo B.S. Virginia Tech, 2010 A Thesis Submitted to the Faculty of the School of Medicine of the University of Louisville In Partial Fulfillment of the Requirement for the Degree of Master of Science In Pharmacology and Toxicology Department of Pharmacology and Toxicology School of Medicine University of Louisville Louisville, KY August, 2016 MULTIPURPOSE TENOFOVIR DISOPROXIL FUMARATE ELECTROSPUN FIBERS FOR THE PREVENTION OF HIV-1 AND HSV-2 INFECTIONS By Kevin Tyo B.S. -
Efficacy and Safety of Imiquimod for Verruca Planae: a Systematic Review
Global Dermatology Research Article ISSN: 2056-7863 Efficacy and safety of imiquimod for verruca planae: A systematic review Xin-rui Zhang#, Bi-huan Xiao#, Rui-qun Qi*, and Xing-hua Gao* Department of Dermatology, No 1 Hospital of China Medical University, Shenyang 110001, PR China #These authors contributed equally to this work Abstract Objective: To assess the efficacy and safety of imiquimod for treating verruca planae. Methods: We searched the Pubmed, Cochrane Register of Controlled Trials, EMbase, CBM, CNKI and Wanfang databases (Chinese) to collect randomized controlled trials (RCTs). We screened the retrieved studies according to the predefined inclusion and exclusion criteria, evaluated the quality of include studies, and performed meta-analyses using the Cochrane Collaboration’s RevMan 5.1. Software. Results: Twenty-six RCTs involving 2169 patients with verruca planae were included and assessed. At the end of the 6th and ≥8th week, the effective rate of topical imiquimod was obviously higher than that of control [ RR=1.42, 95%CI (1.27, 1.60), P <0.00001; RR=1.43, 95%CI (1.22,1.67), P<0.00001]. The effective rate of imiquimod cream was higher than tretinoin cream, tazarotene gel and other antiviral drugs. [RR=1.41, 95%CI (1.25, 1.59), P <0.00001; RR=1.76, 95%CI (1.48, 2.10), P<0.00001; RR=1.71, 95%CI (1.29, 2.26), P =0.0002]. However, the effectiverate of imiquimod cream was lower than 5-ALA-PDT (RR=0.6, 95%CI (0.5, 0.71), P<0.00001). Conclusions: The limited evidence demonstrates that topical imiquimod is safe and efficient. -
Influenza: Diagnosis and Treatment
Influenza: Diagnosis and Treatment David Y. Gaitonde, MD; Cpt. Faith C. Moore, USA, MC; and Maj. Mackenzie K. Morgan, USA, MC Dwight D. Eisenhower Army Medical Center, Fort Gordon, Georgia Influenza is an acute viral respiratory infection that causes significant morbidity and mortality worldwide. Three types of influ- enza cause disease in humans. Influenza A is the type most responsible for causing pandemics because of its high susceptibility to antigenic variation. Influenza is highly contagious, and the hallmark of infection is abrupt onset of fever, cough, chills or sweats, myalgias, and malaise. For most patients in the outpatient setting, the diagnosis is made clinically, and laboratory con- firmation is not necessary. Laboratory testing may be useful in hospitalized patients with suspected influenza and in patients for whom a confirmed diagnosis will change treatment decisions. Rapid molecular assays are the preferred diagnostic tests because they can be done at the point of care, are highly accurate, and have fast results. Treatment with one of four approved anti-influenza drugs may be considered if the patient presents within 48 hours of symptom onset. The benefit of treatment is greatest when antiviral therapy is started within 24 hours of symptom onset. These drugs decrease the duration of illness by about 24 hours in otherwise healthy patients and may decrease the risk of serious complications. No anti-influenza drug has been proven superior. Annual influenza vaccination is recommended for all people six months and older who do not have contraindications. (Am Fam Physician. 2019; 100:online. Copyright © 2019 American Academy of Family Physicians.) Published online November 11, 2019 BEST PRACTICES IN INFECTIOUS DISEASE Influenza is an acute respiratory infection caused by a negative-strand RNA virus of the Orthomyxoviridae fam- Recommendations from the Choosing ily. -
Treating the Oral Creeper: Herpes
ISSN: 2574-1241 Volume 5- Issue 4: 2018 DOI: 10.26717/BJSTR.2018.08.001639 Karthik D Yadav. Biomed J Sci & Tech Res Short Communication Open Access Treating the Oral Creeper: Herpes Yadav Karthik D1*, Pai Anuradha2, R Shesha Prasad3, Yaji Anisha4 1M.D.S - Master of Dental surgery, Department of oral medicine and radiology, Bangalore 2HOD & Professor, Department of oral medicine and radiology, The oxford dental college and research center, Bangalore 3M.D.S - Master of Dental surgery, Department of oral medicine and radiology, Senior lecturer, The oxford dental college and research center, Bangalore 4M.D.S – Master of Dental surgery, Department of oral medicine and radiology, Bangalore Received: August 19, 2018; Published: August 24, 2018 *Corresponding author: Karthik D Yadav, 10th Milestone, Bommanahalli, Hosur Road, Bangalore-560 102, India Short Communication combination of all these drugs is more effective in treating HSV The term “herpes” creates panic among the general population. infections than the anesthetic preparations alone. They are also Oral herpes simplex virus is most commonly seen affecting the oral soft tissue region the perioral area [1,2]. They have been categorized treating HSV. Further, ice can be used and lip materials containing into HSV -1 and HSV -2, wherein HSV-1 affects the orofacial region, used with systemic antiviral agents for increased efficacy while cocoa, lanolin and petroleum products have been recommended to most commonly above the waist region and HSV-2 affects the treat recurrent herpes [6]. genital region below the waist. However, change in sexual practices have been the basis for the variations of the virus, affecting the While the use of topical drugs has few adverse effects and are non-conventional regions of the body [3,4]. -
Case Report Prolonged Shedding of Amantadine- and Oseltamivir- Resistant Influenza A(H3N2) Virus with Dual Mutations in an Immunocompromised Infant
Antiviral Therapy 2010 15:1059–1063 (doi: 10.3851/IMP1657) Case report Prolonged shedding of amantadine- and oseltamivir- resistant influenza A(H3N2) virus with dual mutations in an immunocompromised infant Guillermo Ruiz-Carrascoso1*, Inmaculada Casas1, Francisco Pozo1, Marta González-Vincent2, Pilar Pérez-Breña1 1Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain 2Hospital Infantil Universitario Niño Jesús, Madrid, Spain *Corresponding author e-mail: [email protected] In this study, we report a case of multidrug-resistant contained the substitutions E119V in neuraminidase and influenza A(H3N2) virus isolated from an immunosup- V27A in M2, which produce resistance to oseltamivir and pressed patient with prolonged viral shedding. We also adamantanes, respectively. This is the first report of this describe the genetic characterization of the haemagglu- dual mutation pattern in multidrug-resistant influenza tinin, neuraminidase and M2 influenza genes. The virus A(H3N2) virus. Introduction Influenza, which causes significant morbidity and daily because of neurological toxicity). After receiving mortality in immunocompromised patients, is often fludarabine and melphalan as conditioning therapy, he associated with prolonged viral shedding [1,2] underwent allogenic non-identical peripheral blood regardless of vaccination and antiviral therapy. The transplantation from his mother in May 2005 (day 0). multidrug-resistant influenza viruses, including pan- Total lymphocyte cell (TLC) count prior to transplan- demic A(H1N1) and seasonal A(H1N1) and A(H3N2), tation was 1,340 cells/mm3 (25%). On day 10, fever as reported to date in treated immunocompromised was observed and oxygen therapy was required because patients [1,3–6], have presented the E119V, R292K or of respiratory insufficiency. -
Alpivab, INN-Peramivir
22 February 2018 EMA/CHMP/148367/2018 Committee for Medicinal Products for Human Use (CHMP) Assessment report Alpivab International non-proprietary name: peramivir Procedure No. EMEA/H/C/004299/0000 authorised Note longer Assessment report as adopted by the CHMP with allno information of a commercially confidential nature deleted. Product Medicinal 30 Churchill Place ● Canary Wharf ● London E14 5EU ● United Kingdom Telephone +44 (0)20 3660 6000 Facsimile +44 (0)20 3660 5555 Send a question via our website www.ema.europa.eu/contact An agency of the European Union © European Medicines Agency, 2018. Reproduction is authorised provided the source is acknowledged. Table of contents 1. Background information on the procedure .............................................. 6 1.1. Submission of the dossier ...................................................................................... 6 1.2. Steps taken for the assessment of the product ......................................................... 7 2. Scientific discussion ................................................................................ 8 2.1. Problem statement ............................................................................................... 8 2.1.1. Disease or condition ........................................................................................... 8 2.1.2. Epidemiology and risk factors, screening tools/prevention ...................................... 8 2.1.3. Aetiology and pathogenesis ...............................................................................