tetano
Editor, Senior Moderator
Probiotics Antimicrob Proteins. 2010 Jun;2(2):104-11. doi: 10.1007/s12602-010-9036-5.
[h=1]Antiviral Action of Methylated β-Lactoglobulin on the Human Influenza Virus A Subtype H3N2.[/h] Sitohy M[SUP]1,[/SUP][SUP]2[/SUP], Besse B[SUP]3[/SUP], Billaudel S[SUP]3[/SUP], Haertl? T[SUP]1[/SUP], Chobert JM[SUP]4[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] Antiviral activity of methylated β-lactoglobulin (Met-BLG) against H3N2 infected into MDCK cell lines depended on concentration of Met-BLG, viral load, and duration of infection. IC50% of the hemagglutination activity for 1 and 0.2 MOI (multiplicity of infection) after 24 h of incubation at 37 ?C in the presence of 5% CO2 were 20 ? 0.8 and 17 ? 0.7 μg mL(-1) Met-BLG, respectively. Longer incubation period (4 days) was associated with low IC50% of the hemagglutination activity (7.1 ? 0.3 μg mL(-1) Met-BLG) and low IC50% of immuno-fluorescence of viral nucleoproteins (9.7 ? 0.4 μg mL(-1) Met-BLG) when using 0.2 and 0.1 MOI, respectively. A concentration of 25 μg mL(-1) of Met-BLG reduced the amount of replicating virus by about 2 and 1.3 logs when the viral load was 0.01 and 0.1 MOI, respectively, while higher concentrations reduced it by about 5-6 logs. Antiviral action of Met-BLG was coupled with a cellular protective action, which reached 100% when using 0.01 and 0.1 MOI and 83% when using 1.0 MOI. The time of Met-BLG addition after the viral infection was determinant for its antiviral efficacy and for its protection of the infected MDCK cell lines. Anti-hemagglutination action and cell protective action decreased gradually and in parallel with the delay in the time of Met-BLG addition to disappear totally after 10 h delay.
[h=4]KEYWORDS:[/h] Antiviral activity; Beta-lactoglobulin; Esterification; H3N2
PMID: 26781119 [PubMed]
[h=1]Antiviral Action of Methylated β-Lactoglobulin on the Human Influenza Virus A Subtype H3N2.[/h] Sitohy M[SUP]1,[/SUP][SUP]2[/SUP], Besse B[SUP]3[/SUP], Billaudel S[SUP]3[/SUP], Haertl? T[SUP]1[/SUP], Chobert JM[SUP]4[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] Antiviral activity of methylated β-lactoglobulin (Met-BLG) against H3N2 infected into MDCK cell lines depended on concentration of Met-BLG, viral load, and duration of infection. IC50% of the hemagglutination activity for 1 and 0.2 MOI (multiplicity of infection) after 24 h of incubation at 37 ?C in the presence of 5% CO2 were 20 ? 0.8 and 17 ? 0.7 μg mL(-1) Met-BLG, respectively. Longer incubation period (4 days) was associated with low IC50% of the hemagglutination activity (7.1 ? 0.3 μg mL(-1) Met-BLG) and low IC50% of immuno-fluorescence of viral nucleoproteins (9.7 ? 0.4 μg mL(-1) Met-BLG) when using 0.2 and 0.1 MOI, respectively. A concentration of 25 μg mL(-1) of Met-BLG reduced the amount of replicating virus by about 2 and 1.3 logs when the viral load was 0.01 and 0.1 MOI, respectively, while higher concentrations reduced it by about 5-6 logs. Antiviral action of Met-BLG was coupled with a cellular protective action, which reached 100% when using 0.01 and 0.1 MOI and 83% when using 1.0 MOI. The time of Met-BLG addition after the viral infection was determinant for its antiviral efficacy and for its protection of the infected MDCK cell lines. Anti-hemagglutination action and cell protective action decreased gradually and in parallel with the delay in the time of Met-BLG addition to disappear totally after 10 h delay.
[h=4]KEYWORDS:[/h] Antiviral activity; Beta-lactoglobulin; Esterification; H3N2
PMID: 26781119 [PubMed]