Effects of Alkaline Solutions on the Structure and Function of Influenza A Virus

Influenza A virus (IAV) infection contributes to high annual morbidity and mortality, thus necessitating measures aimed at protecting against the disease. Alcohol-based disinfectants are commonly used to inactivate IAV, but they have several undesirable properties. In search of other means which wou...

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Published inViruses Vol. 16; no. 10; p. 1636
Main Authors Seguchi, Manato, Yamaguchi, Seiji, Tanaka, Mamoru, Mori, Yukihiro, Tsurudome, Masato, Ito, Morihiro
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 01.10.2024
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Abstract Influenza A virus (IAV) infection contributes to high annual morbidity and mortality, thus necessitating measures aimed at protecting against the disease. Alcohol-based disinfectants are commonly used to inactivate IAV, but they have several undesirable properties. In search of other means which would inactivate IAV, we focused on the effect of alkaline solutions on IAV. We found the viral infectivity remarkably decreased with treatment of an alkaline solution at pH 12.0 for 1 min, where destruction of the viral spikes was observed using an electron microscope. A more detailed examination revealed that the infectivity of IAV was remarkedly reduced by brief treatment with the alkaline solution at pH 11.75 or above, most likely due to the degradation of viral hemagglutinin protein. These results show that at a high pH, the haemagglutinin protein is degraded, resulting in very rapid inactivation of IAV.
AbstractList Influenza A virus (IAV) infection contributes to high annual morbidity and mortality, thus necessitating measures aimed at protecting against the disease. Alcohol-based disinfectants are commonly used to inactivate IAV, but they have several undesirable properties. In search of other means which would inactivate IAV, we focused on the effect of alkaline solutions on IAV. We found the viral infectivity remarkably decreased with treatment of an alkaline solution at pH 12.0 for 1 min, where destruction of the viral spikes was observed using an electron microscope. A more detailed examination revealed that the infectivity of IAV was remarkedly reduced by brief treatment with the alkaline solution at pH 11.75 or above, most likely due to the degradation of viral hemagglutinin protein. These results show that at a high pH, the haemagglutinin protein is degraded, resulting in very rapid inactivation of IAV.Influenza A virus (IAV) infection contributes to high annual morbidity and mortality, thus necessitating measures aimed at protecting against the disease. Alcohol-based disinfectants are commonly used to inactivate IAV, but they have several undesirable properties. In search of other means which would inactivate IAV, we focused on the effect of alkaline solutions on IAV. We found the viral infectivity remarkably decreased with treatment of an alkaline solution at pH 12.0 for 1 min, where destruction of the viral spikes was observed using an electron microscope. A more detailed examination revealed that the infectivity of IAV was remarkedly reduced by brief treatment with the alkaline solution at pH 11.75 or above, most likely due to the degradation of viral hemagglutinin protein. These results show that at a high pH, the haemagglutinin protein is degraded, resulting in very rapid inactivation of IAV.
Influenza A virus (IAV) infection contributes to high annual morbidity and mortality, thus necessitating measures aimed at protecting against the disease. Alcohol-based disinfectants are commonly used to inactivate IAV, but they have several undesirable properties. In search of other means which would inactivate IAV, we focused on the effect of alkaline solutions on IAV. We found the viral infectivity remarkably decreased with treatment of an alkaline solution at pH 12.0 for 1 min, where destruction of the viral spikes was observed using an electron microscope. A more detailed examination revealed that the infectivity of IAV was remarkedly reduced by brief treatment with the alkaline solution at pH 11.75 or above, most likely due to the degradation of viral hemagglutinin protein. These results show that at a high pH, the haemagglutinin protein is degraded, resulting in very rapid inactivation of IAV.
Audience Academic
Author Tanaka, Mamoru
Mori, Yukihiro
Yamaguchi, Seiji
Seguchi, Manato
Tsurudome, Masato
Ito, Morihiro
AuthorAffiliation 4 Department of Food and Nutritional Sciences, College of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-cho, Kasugai-shi 487-8501, Aichi, Japan; m-tanaka@isc.chubu.ac.jp
5 Department of Nursing, College of Life and Health Science, Chubu University, 1200 Matsumoto-cho, Kasugai-shi 487-8501, Aichi, Japan; moriyuki0821@isc.chubu.ac.jp
2 Support for Pioneering Research Initiated by the Next Generation (SPRING), Chubu University, 1200 Matsumoto-cho, Kasugai-shi 487-8501, Japan
1 Graduate School of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai-shi 487-8501, Aichi, Japan; rb24801-4974@sti.chubu.ac.jp (M.S.); sy-esi@isc.chubu.ac.jp (S.Y.); tsuru@isc.chubu.ac.jp (M.T.)
6 Department of Lifelong Sports and Health Sciences, College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai-shi 487-8501, Aichi, Japan
3 Department of Biomedical Sciences, College of Life and Health Science, Chubu University, 1200 Matsumoto-cho, Kasugai-shi 487-850
AuthorAffiliation_xml – name: 3 Department of Biomedical Sciences, College of Life and Health Science, Chubu University, 1200 Matsumoto-cho, Kasugai-shi 487-8501, Aichi, Japan
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CitedBy_id crossref_primary_10_1080_10643389_2025_2457980
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Keywords alkaline condition
hemagglutinin
hydrolysis
influenza A virus
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Snippet Influenza A virus (IAV) infection contributes to high annual morbidity and mortality, thus necessitating measures aimed at protecting against the disease....
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StartPage 1636
SubjectTerms Acids
Alkalies - pharmacology
alkaline condition
Animals
Care and treatment
Diagnosis
Disinfectants
Disinfectants - pharmacology
Disinfection & disinfectants
Dogs
Epidemics
Health aspects
hemagglutinin
Hemagglutinin Glycoproteins, Influenza Virus - chemistry
Hemagglutinin Glycoproteins, Influenza Virus - metabolism
Hemagglutinins
Humans
Hydrogen-Ion Concentration
hydrolysis
Infections
Infectivity
Influenza
Influenza A
influenza A virus
Influenza A virus - drug effects
Influenza A virus - physiology
Madin Darby Canine Kidney Cells
Microorganisms
Monoclonal antibodies
Morbidity
pH effects
Proteins
Solutions
Structure-function relationships
Viral infections
Virus Inactivation - drug effects
Viruses
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Title Effects of Alkaline Solutions on the Structure and Function of Influenza A Virus
URI https://www.ncbi.nlm.nih.gov/pubmed/39459968
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https://pubmed.ncbi.nlm.nih.gov/PMC11512367
https://doaj.org/article/d82f40bd24334f2ea04f2daa8f2d171f
Volume 16
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