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Memantine derived compounds as potent in vitro inhibitors of urease: Repurposing of memantine, sonication assisted derivatization and in vitro enzyme inhibition, kinetics and molecular docking studies. Med Chem Res 2023. [DOI: 10.1007/s00044-023-03020-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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2
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Jia R, Zhang G, Liu H, Chen Y, Zhou J, Liu Y, Ding P, Wang Y, Zang W, Wang A. Novel Application of Nanofluidic Chip Digital PCR for Detection of African Swine Fever Virus. Front Vet Sci 2021; 7:621840. [PMID: 33614757 PMCID: PMC7894257 DOI: 10.3389/fvets.2020.621840] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 12/11/2020] [Indexed: 01/06/2023] Open
Abstract
African swine fever virus (ASFV) gives rise to a grievous transboundary and infectious disease, African swine fever (ASF), which has caused a great economic loss in the swine industry. To prevent and control ASF, once suspicious symptoms have presented, the movement of animal and pork products should be stopped, and then, laboratory testing should be adopted to diagnose ASF. A method for ASFV DNA quantification is presented in this research, which utilizes the next-generation PCR platform, nanofluidic chip digital PCR (cdPCR). The cdPCR detection showed good linearity and repeatability. The limit of detection for cdPCR is 30.1995 copies per reaction, whereas no non-specific amplification curve was found with other swine viruses. In the detection of 69 clinical samples, the cdPCR showed significant consistency [91.30% (63/69)] to the Office International des Epizooties-approved quantitative PCR. Compared with the commercial quantitative PCR kit, the sensitivity of the cdPCR assay was 86.27% (44/50), and the specificity was 94.44% (17/18). The positive coincidence rate of the cdPCR assay was 88% (44/50). The total coincidence rate of the cdPCR and kit was 89.86% (62/69), and the kappa value reached 0.800 (P < 0.0001). This is the first time that cdPCR has been applied to detecting ASFV successfully.
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Affiliation(s)
- Rui Jia
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Gaiping Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Hongliang Liu
- Henan Zhongze Biological Engineering Co. LTD, Zhengzhou, China
| | - Yumei Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, China.,Henan Zhongze Biological Engineering Co. LTD, Zhengzhou, China
| | - Jingming Zhou
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Yankai Liu
- Henan Zhongze Biological Engineering Co. LTD, Zhengzhou, China
| | - Peiyang Ding
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Yanwei Wang
- Henan Zhongze Biological Engineering Co. LTD, Zhengzhou, China
| | - Weimin Zang
- Henan Zhongze Biological Engineering Co. LTD, Zhengzhou, China
| | - Aiping Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
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3
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Zilker M, Sörgel F, Holzgrabe U. A systematic review of the stability of finished pharmaceutical products and drug substances beyond their labeled expiry dates. J Pharm Biomed Anal 2019; 166:222-235. [PMID: 30660807 DOI: 10.1016/j.jpba.2019.01.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 01/09/2019] [Indexed: 11/16/2022]
Abstract
In recent years, there has been a very active debate about the stability of drug products especially after exceeding the expiry dates. The regulatory authorities require comprehensive stability data for market approval. The shelf-life obtained determines the expiry date, which is typically between 1 and 5 years and commonly set in a conservative manner. Conducting stability studies is a resource- and time-consuming matter for the pharmaceutical manufacturer. Short shelf-lives of drug products are also a challenge for managers of hospitals, nursing homes, and strategic national stockpile agencies which have to dispose of large quantities of outdated medicines every year. This conflict raises the question whether shelf-lives are often longer than the labeled one. In the past years, the FDA has launched several programs for shelf-life extension in order to defer replacement costs and to prevent drug shortages due to supply disruption. The aim of this review was to bring together the available literature of expired drug products as well as historical pharmaceutical relicts with an age of more than 80 years and to discuss the actual shelf-life with regard to the respective dosage form and the affiliation of the drug class. It seems to be reasonable for a large portion of drugs to extend the expiry dates far beyond five years.
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Affiliation(s)
- Markus Zilker
- University of Würzburg, Institute for Pharmacy and Food Chemistry, Am Hubland, 97074 Würzburg, Germany
| | - Fritz Sörgel
- IBMP - Institute for Biomedical and Pharmaceutical Research, Paul-Ehrlich-Straße 19, 90562 Nürnberg-Heroldsberg, Germany; Institute of Pharmacology, University of Duisburg-Essen, Hufelandstraße 55, 45122 Essen, Germany
| | - Ulrike Holzgrabe
- University of Würzburg, Institute for Pharmacy and Food Chemistry, Am Hubland, 97074 Würzburg, Germany.
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4
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Zilker M, Sörgel F, Holzgrabe U. A stability-study of expired ampoules manufactured more than 40 years ago. J Pharm Biomed Anal 2018; 150:318-326. [DOI: 10.1016/j.jpba.2017.12.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 12/07/2017] [Accepted: 12/08/2017] [Indexed: 10/18/2022]
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5
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Du B, Daniels VR, Vaksman Z, Boyd JL, Crady C, Putcha L. Evaluation of physical and chemical changes in pharmaceuticals flown on space missions. AAPS J 2011; 13:299-308. [PMID: 21479701 PMCID: PMC3085701 DOI: 10.1208/s12248-011-9270-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Accepted: 03/24/2011] [Indexed: 11/30/2022] Open
Abstract
Efficacy and safety of medications used for the treatment of astronauts in space may be compromised by altered stability in space. We compared physical and chemical changes with time in 35 formulations contained in identical pharmaceutical kits stowed on the International Space Station (ISS) and on Earth. Active pharmaceutical content (API) was determined by ultra- and high-performance liquid chromatography after returning to Earth. After stowage for 28 months in space, six medications aboard the ISS and two of matching ground controls exhibited changes in physical variables; nine medications from the ISS and 17 from the ground met the United States Pharmacopeia (USP) acceptance criteria for API content after 28 months of storage. A higher percentage of medications from each flight kit had lower API content than the respective ground controls. The number of medications failing API requirement increased as a function of time in space, independent of expiration date. The rate of degradation was faster in space than on the ground for many of the medications, and most solid dosage forms met USP standard for dissolution after storage in space. Cumulative radiation dose was higher and increased with time in space, whereas temperature and humidity remained similar to those on the ground. Exposure to the chronic low dose of ionizing radiation aboard the spacecraft as well as repackaging of solid dosage forms in flight-specific dispensers may adversely affect stability of pharmaceuticals. Characterization of degradation profiles of unstable formulations and identification of chemical attributes of stability in space analog environments on Earth will facilitate development of space-hardy medications.
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Affiliation(s)
- Brian Du
- />Wyle Integrated Science and Engineering Group, 1290 Hercules Drive, Suite 120, Houston, Texas 77058–2769 USA
| | - Vernie R. Daniels
- />Wyle Integrated Science and Engineering Group, 1290 Hercules Drive, Suite 120, Houston, Texas 77058–2769 USA
| | - Zalman Vaksman
- />Texas Medical Center, University of Texas, Houston, Texas 77025 USA
| | - Jason L. Boyd
- />Universities Space Research Association, Houston, Texas 77058 USA
| | - Camille Crady
- />Wyle Integrated Science and Engineering Group, 1290 Hercules Drive, Suite 120, Houston, Texas 77058–2769 USA
| | - Lakshmi Putcha
- />Pharmacotherapeutics Laboratory, SK/Human Adaptation and Countermeasures Division, NASA Johnson Space Center, 2101 NASA Parkway, Houston, Texas 77058 USA
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6
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Kaefer V, Semedo JG, Silva Kahl VF, Von Borowsky RG, Gianesini J, Ledur Kist TB, Pereira P, Picada JN. DNA damage in brain cells and behavioral deficits in mice after treatment with high doses of amantadine. J Appl Toxicol 2010; 30:745-53. [DOI: 10.1002/jat.1550] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Revised: 04/26/2010] [Accepted: 04/29/2010] [Indexed: 12/25/2022]
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7
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Alvis N, la Hoz FD, Darío Gómez R. Medicamentos antivirales para la epidemia de influenza: efectividad y costo-efectividad del oseltamivir. INFECTIO 2009. [DOI: 10.1016/s0123-9392(09)70153-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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8
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Claudet I, Maréchal C. Status epilepticus in a pediatric patient with amantadine overdose. Pediatr Neurol 2009; 40:120-2. [PMID: 19135627 DOI: 10.1016/j.pediatrneurol.2008.10.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Revised: 10/13/2008] [Accepted: 10/20/2008] [Indexed: 10/21/2022]
Abstract
A 2-year-old boy who ingested 0.8-1.5 g of amantadine developed status epilepticus. One hour later, the child presented with agitation, diaphoresis, and vomiting. He was admitted to the pediatric emergency department 2 hours later. Generalized seizures evolved to status epilepticus, with alternating generalized tonic-clonic and partial seizures, over a period of 7 hours. Other initial clinical signs were sinusal tachycardia and reactive bilateral mydriasis. All symptoms resolved within 20 hours, with a good recovery; the child was released from the hospital on day 3.
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Affiliation(s)
- Isabelle Claudet
- Pediatric Emergency Department, Children's Hospital, Toulouse, France.
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9
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Waste not? Am J Nurs 2008; 108:86-7. [PMID: 18580138 DOI: 10.1097/01.naj.0000325822.00252.5c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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He G, Qiao J, Dong C, He C, Zhao L, Tian Y. Amantadine-resistance among H5N1 avian influenza viruses isolated in Northern China. Antiviral Res 2008; 77:72-6. [PMID: 17897729 DOI: 10.1016/j.antiviral.2007.08.007] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2007] [Revised: 08/15/2007] [Accepted: 08/17/2007] [Indexed: 11/21/2022]
Abstract
We tested the amantadine-resistance among avian influenza A (H5N1) viruses isolated from chicken in Hebei Province of Northern China from 2001 to 2005, and investigated the amantadine use in this area. Plague reduction assay in MDCK cells showed that 83.3% isolates (5/6) were amantadine-resistant strains. The M2 sequence analysis revealed that four of five resistant isolates contained the point mutations (Ser to Asn) at position 31 that could confer resistance to amantadine. These results indicated that the incidence of amantadine-resistant viruses isolated in Northern China was particularly high. In the investigation of amantadine use, we found that amantadine was used extensively in poultry farms in this area, which maybe was one of reasons of the high amantadine-resistance incidence.
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Affiliation(s)
- Guimei He
- Department of Pathophysiology, College of Veterinary Medicine, China Agricultural University, Beijing 100094, People's Republic of China.
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11
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Tsiodras S, Mooney JD, Hatzakis A. Role of combination antiviral therapy in pandemic influenza and stockpiling implications. BMJ 2007; 334:293-4. [PMID: 17289732 PMCID: PMC1796666 DOI: 10.1136/bmj.39105.428981.be] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/16/2007] [Indexed: 11/04/2022]
Affiliation(s)
- Sotirios Tsiodras
- Fourth Academic Department of Internal Medicine, University of Athens Medical School, Athens 12462, Greece.
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12
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Lyon RC, Taylor JS, Porter DA, Prasanna HR, Hussain AS. Stability profiles of drug products extended beyond labeled expiration dates. J Pharm Sci 2006; 95:1549-60. [PMID: 16721796 DOI: 10.1002/jps.20636] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The American Medical Association has questioned whether expiration dating markedly underestimates the actual shelf life of drug products. Results from the shelf life extension program (SLEP) have been evaluated to provide extensive data to address this issue. The SLEP has been administered by the Food and Drug Administration for the United States Department of Defense (DOD) for 20 years. This program probably contains the most extensive source of pharmaceutical stability data extant. This report summarizes extended stability profiles for 122 different drug products (3,005 different lots). The drug products were categorized into five groups based on incidence of initial extension failures and termination failures (extended lot eventually failed upon re-testing). Based on testing and stability assessment, 88% of the lots were extended at least 1 year beyond their original expiration date for an average extension of 66 months, but the additional stability period was highly variable. The SLEP data supports the assertion that many drug products, if properly stored, can be extended past the expiration date. Due to the lot-to-lot variability, the stability and quality of extended drug products can only be assured by periodic testing and systematic evaluation of each lot.
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Affiliation(s)
- Robbe C Lyon
- Division of Product Quality Research, Center for Drug Evaluation and Research, Food and Drug Administration, HFD-941, White Oak, Life Sciences Building 64, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993-0002, USA.
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Abstract
Pandemic influenza in humans is a zoonotic disease caused by the transfer of influenza A viruses or virus gene segments from animal reservoirs. Influenza A viruses have been isolated from avian and mammalian hosts, although the primary reservoirs are the aquatic bird populations of the world. In the aquatic birds, influenza is asymptomatic, and the viruses are in evolutionary stasis. The aquatic bird viruses do not replicate well in humans, and these viruses need to reassort or adapt in an intermediate host before they emerge in human populations. Pigs can serve as a host for avian and human viruses and are logical candidates for the role of intermediate host. The transmission of avian H5N1 and H9N2 viruses directly to humans during the late 1990s showed that land-based poultry also can serve between aquatic birds and humans as intermediate hosts of influenza viruses. That these transmission events took place in Hong Kong and China adds further support to the hypothesis that Asia is an epicentre for influenza and stresses the importance of surveillance of pigs and live-bird markets in this area.
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Affiliation(s)
- R J Webby
- Department of Virology and Molecular Biology, St Jude Children's Research Hospital, 332 North Lauderdale, Memphis, TN 38105, USA
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Suckow RF. Separation methods for tricyclic antiviral drugs. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 2001; 764:313-25. [PMID: 11817035 DOI: 10.1016/s0378-4347(01)00318-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A review of the published analytical methodology for the tricyclic antiviral (TAV) drugs is presented. While amantadine and rimantadine are the only two approved drugs for the prophylaxis and treatment of the influenza A virus, amantadine has also been approved for the treatment of Parkinson's disease. In addition, a few structurally related compounds are finding important clinical applications in other central nervous system-related disorders. To effectively evaluate the pharmacokinetics, biotransformations, stability, and other critical parameters that are necessary for pre-clinical and clinical studies, analytical methodology that conforms to the rigors of regulatory requirements must be developed and made available. This review discusses the analytical methods used in the determination of amantadine, rimantadine, tromantadine and memantine and the pre-clinical and clinical application of these techniques.
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Affiliation(s)
- R F Suckow
- Analytical Psychopharmacology Laboratory, New York State Psychiatric Institute, NY 10032, USA.
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15
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Govorkova EA, Leneva IA, Goloubeva OG, Bush K, Webster RG. Comparison of efficacies of RWJ-270201, zanamivir, and oseltamivir against H5N1, H9N2, and other avian influenza viruses. Antimicrob Agents Chemother 2001; 45:2723-32. [PMID: 11557461 PMCID: PMC90723 DOI: 10.1128/aac.45.10.2723-2732.2001] [Citation(s) in RCA: 191] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The orally administered neuraminidase (NA) inhibitor RWJ-270201 was tested in parallel with zanamivir and oseltamivir against a panel of avian influenza viruses for inhibition of NA activity and replication in tissue culture. The agents were then tested for protection of mice against lethal H5N1 and H9N2 virus infection. In vitro, RWJ-270201 was highly effective against all nine NA subtypes. NA inhibition by RWJ-270201 (50% inhibitory concentration, 0.9 to 4.3 nM) was superior to that by zanamivir and oseltamivir carboxylate. RWJ-270201 inhibited the replication of avian influenza viruses of both Eurasian and American lineages in MDCK cells (50% effective concentration, 0.5 to 11.8 microM). Mice given 10 mg of RWJ-270201 per kg of body weight per day were completely protected against lethal challenge with influenza A/Hong Kong/156/97 (H5N1) and A/quail/Hong Kong/G1/97 (H9N2) viruses. Both RWJ-270201 and oseltamivir significantly reduced virus titers in mouse lungs at daily dosages of 1.0 and 10 mg/kg and prevented the spread of virus to the brain. When treatment began 48 h after exposure to H5N1 virus, 10 mg of RWJ-270201/kg/day protected 50% of mice from death. These results suggest that RWJ-270201 is at least as effective as either zanamivir or oseltamivir against avian influenza viruses and may be of potential clinical use for treatment of emerging influenza viruses that may be transmitted from birds to humans.
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Affiliation(s)
- E A Govorkova
- Department of Virology and Molecular Biology, St. Jude's Children's Research Hospital, 332 N. Lauderdale, Memphis, TN 38105, USA
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16
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Abstract
Influenza virus infections remain an important cause of morbidity and mortality. Furthermore, a recurrence of pandemic influenza remains a real possibility. There are now effective ways to both prevent and treat influenza. Prevention of infection is most effectively accomplished by vaccination. Vaccination with the inactivated, intramuscular influenza vaccine has been clearly demonstrated to reduce serious morbidity and mortality associated with influenza infection, especially in groups of patients at high risk (e.g. the elderly). However, the inactivated, intramuscular vaccine does not strongly induce cell-mediated or mucosal immune responses, and protection induced by the vaccine is highly strain specific. Live, attenuated influenza vaccines administered intranasally have been studied in clinical trials and shown to elicit stronger mucosal and cell-mediated immune responses. Live, attenuated vaccines appear to be more effective for inducing protective immunity in children or the elderly than inactivated, intramuscular vaccines. Additionally, novel vaccine methodologies employing conserved components of influenza virus or viral DNA are being developed. Preclinical studies suggest that these approaches may lead to methods of vaccination that could induce immunity against diverse strains or subtypes of influenza. Because of the limitations of vaccination, antiviral therapy continues to play an important role in the control of influenza. Two major classes of antivirals have demonstrated ability to prevent or treat influenza in clinical trials: the adamantanes and the neuraminidase inhibitors. The adamantanes (amantadine and rimantadine) have been in use for many years. They inhibit viral uncoating by blocking the proton channel activity of the influenza A viral M2 protein. Limitations of the adamantanes include lack of activity against influenza B, toxicity (especially in the elderly), and the rapid development of resistance. The neuraminidase inhibitors were designed to interfere with the conserved sialic acid binding site of the viral neuraminidase and act against both influenza A and B with a high degree of specificity when administered by the oral (oseltamivir) or inhaled (zanamivir) route. The neuraminidase inhibitors have relatively low toxicity, and viral resistance to these inhibitors appears to be uncommon. Additional novel antivirals that target other phases of the life cycle of influenza are in preclinical development. For example, recombinant collectins inhibit replication of influenza by binding to the viral haemagglutinin as well as altering phagocyte responses to the virus. Recombinant techniques have been used for generation of antiviral proteins (e.g. modified collectins) or oligonucleotides. Greater understanding of the biology of influenza viruses has already resulted in significant advances in the management of this important pathogen. Further advances in vaccination and antiviral therapy of influenza should remain a high priority.
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Affiliation(s)
- R Kandel
- Hebrew Rehabilitation Center for Aged, Harvard University School of Medicine, Boston, Massachusetts 02131-1097, USA
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Kai H, Matsumoto H, Hattori N, Takase A, Fujiwara T, Sugimoto H. Anti-influenza virus activities of 2-alkoxyimino-n-(2-isoxazolin-3-ylmethyl)acetamides. Bioorg Med Chem Lett 2001; 11:1997-2000. [PMID: 11454466 DOI: 10.1016/s0960-894x(01)00362-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A series of 2-alkoxyimino-N-(2-isoxazolin-3-ylmethyl)acetamides and related compounds were synthesized and their antiviral activities against human influenza A virus were assessed. Studies of the structure-activity relationships revealed the strongest antiviral activity when position-5 of the isoxazoline ring was substituted with a tert-butyl group. When the alkoxyimino moiety was substituted with a methyl, ethyl, isopropyl or allyl group, good antiviral activity was obtained. Among the geometrical isomers at the oxime moiety, the E-isomers were more active than the Z-isomers. Among the compounds examined, (E)-2-allyloxyimino-2-cyano-N-(5-tert-butyl-2-isoxazolin-3-ylmethyl)acetamide (1j) was the most active inhibitor with an EC(50) of 3 microg/mL in vitro.
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Affiliation(s)
- H Kai
- Aburahi Laboratories, Shionogi & Co., Ltd., Koka-cho, Koka-gun, 520-3423, Shiga, Japan.
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