tetano
Editor, Senior Moderator
Yonago Acta Med. 2016 Mar;59(1):61-65. Epub 2016 Apr 1.
[h=1]In Vitro Inhibition of Cytopathic Effect of Influenza Virus and Human Immunodeficiency Virus by Bamboo Leaf Extract Solution and Sodium Copper Chlorophyllin.[/h] Ito A[SUP]1[/SUP], Tsuneki A[SUP]2[/SUP], Yoshida Y[SUP]1[/SUP], Ryoke K[SUP]1[/SUP], Kaidoh T[SUP]3[/SUP], Kageyama S[SUP]2[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] [h=4]BACKGROUND:[/h] Although the link between oral and oropharyngeal health status and susceptibility to infection has long been recognized, there is a limit to the selection of antiseptics for oral care.
[h=4]METHODS:[/h] Madin-Darby canine kidney (MDCK) cells were exposed to influenza virus and cultured in the presence or absence of test reagents: bamboo leaf extract solution and sodium copper chrolophyllin. MDCK cells were pre-incubated with the reagents to assess the inhibitory activity at adsorption (viral attachment). Similarly, anti-HIV activity and the inhibitory mechanism at adsorption were assessed by MT-2 cell culture system. Mixture of HIV and bamboo leaf extract solution was fixed and examined by transmission electron microscopy.
[h=4]RESULTS:[/h] The 50% inhibitory concentration (IC[SUB]50[/SUB]) of bamboo leaf extract solution against influenza virus and the 50% cytotoxic concentration (CC[SUB]50[/SUB]) in MDCK cells of the solution lay between 0.0313-0.0625% and 0.5-1.0%. The solution inhibited the influenza virus adsorption at the concentration of 0.5% (P < 0.05). The values of IC[SUB]50[/SUB] and CC[SUB]50[/SUB] of sodium copper chlorophyllin lay between 50-100 ?M and 200-400 ?M, respectively. This inhibited the virus adsorption at 200 ?M (P < 0.05). The bamboo leaf extract solution showed values of IC[SUB]50[/SUB] against HIV and CC[SUB]50[/SUB] in MT-2 cells at around 0.0313% and between 0.25-0.5%, respectively. This solution inhibited HIV adsorption at 1.25% (P < 0.05). The IC[SUB]50[/SUB] and CC[SUB]50[/SUB] of sodium copper chlorophyllin lay between 50-100 ?M and 200-400 ?M, respectively. Sodium copper chlorophyllin inhibited HIV adsorption at 2.5 mM (P < 0.05). HIV particles survived after the exposure to 0.5% bamboo leaf extract solution.
[h=4]CONCLUSION:[/h] Sodium copper chlorophyllin exerted antiviral activities against influenza virus and HIV as the major ingredient of bamboo leaf extract solution by blocking adsorption. This mechanism of action is different completely from the one of povidone-iodine.
[h=4]KEYWORDS:[/h] HIV; adsorption; bamboo leaf extract solution; human; influenza; sodium copper chlorophyllin
PMID: 27046952 [PubMed - as supplied by publisher]
[h=1]In Vitro Inhibition of Cytopathic Effect of Influenza Virus and Human Immunodeficiency Virus by Bamboo Leaf Extract Solution and Sodium Copper Chlorophyllin.[/h] Ito A[SUP]1[/SUP], Tsuneki A[SUP]2[/SUP], Yoshida Y[SUP]1[/SUP], Ryoke K[SUP]1[/SUP], Kaidoh T[SUP]3[/SUP], Kageyama S[SUP]2[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] [h=4]BACKGROUND:[/h] Although the link between oral and oropharyngeal health status and susceptibility to infection has long been recognized, there is a limit to the selection of antiseptics for oral care.
[h=4]METHODS:[/h] Madin-Darby canine kidney (MDCK) cells were exposed to influenza virus and cultured in the presence or absence of test reagents: bamboo leaf extract solution and sodium copper chrolophyllin. MDCK cells were pre-incubated with the reagents to assess the inhibitory activity at adsorption (viral attachment). Similarly, anti-HIV activity and the inhibitory mechanism at adsorption were assessed by MT-2 cell culture system. Mixture of HIV and bamboo leaf extract solution was fixed and examined by transmission electron microscopy.
[h=4]RESULTS:[/h] The 50% inhibitory concentration (IC[SUB]50[/SUB]) of bamboo leaf extract solution against influenza virus and the 50% cytotoxic concentration (CC[SUB]50[/SUB]) in MDCK cells of the solution lay between 0.0313-0.0625% and 0.5-1.0%. The solution inhibited the influenza virus adsorption at the concentration of 0.5% (P < 0.05). The values of IC[SUB]50[/SUB] and CC[SUB]50[/SUB] of sodium copper chlorophyllin lay between 50-100 ?M and 200-400 ?M, respectively. This inhibited the virus adsorption at 200 ?M (P < 0.05). The bamboo leaf extract solution showed values of IC[SUB]50[/SUB] against HIV and CC[SUB]50[/SUB] in MT-2 cells at around 0.0313% and between 0.25-0.5%, respectively. This solution inhibited HIV adsorption at 1.25% (P < 0.05). The IC[SUB]50[/SUB] and CC[SUB]50[/SUB] of sodium copper chlorophyllin lay between 50-100 ?M and 200-400 ?M, respectively. Sodium copper chlorophyllin inhibited HIV adsorption at 2.5 mM (P < 0.05). HIV particles survived after the exposure to 0.5% bamboo leaf extract solution.
[h=4]CONCLUSION:[/h] Sodium copper chlorophyllin exerted antiviral activities against influenza virus and HIV as the major ingredient of bamboo leaf extract solution by blocking adsorption. This mechanism of action is different completely from the one of povidone-iodine.
[h=4]KEYWORDS:[/h] HIV; adsorption; bamboo leaf extract solution; human; influenza; sodium copper chlorophyllin
PMID: 27046952 [PubMed - as supplied by publisher]