Antiviral effect of polyphenol-enriched extract of Rumex Acetosa L. against Influenza A virus

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
A Derksen ◽  
W Hafezi ◽  
A Hensel ◽  
J Kühn
Keyword(s):  
Influenza A Virus ◽  
Influenza A ◽  
Antiviral Effect ◽  
Rumex Acetosa

Antiviral effect of polyphenol-enriched extract of Rumex acetosa L. against influenza A virus

2013 ◽  
Vol 34 (S 01) ◽  
Author(s):  
A Derksen ◽  
J Kühn ◽  
W Hafezi ◽  
A Hensel
Keyword(s):  
Influenza A Virus ◽  
Influenza A ◽  
Antiviral Effect ◽  
Rumex Acetosa

scholarly journals Potential of acylated peptides to target the influenza A virus

2015 ◽  
Vol 11 ◽  
pp. 589-595 ◽  
Author(s):  
Daniel Lauster ◽  
Damian Pawolski ◽  
Julian Storm ◽  
Kai Ludwig ◽  
Rudolf Volkmer ◽  
...  
Keyword(s):  
Influenza Virus ◽  
Influenza A Virus ◽  
Influenza A ◽  
Antiviral Drug ◽  
Antiviral Effect ◽  
Inhibitory Effect ◽  
Order Structure ◽  
Lipid Phase ◽  
Multivalent Display

For antiviral drug design, especially in the field of influenza virus research, potent multivalent inhibitors raise high expectations for combating epidemics and pandemics. Among a large variety of covalent and non-covalent scaffold systems for a multivalent display of inhibitors, we created a simple supramolecular platform to enhance the antiviral effect of our recently developed antiviral Peptide B (PeBGF), preventing binding of influenza virus to the host cell. By conjugating the peptide with stearic acid to create a higher-order structure with a multivalent display, we could significantly enhance the inhibitory effect against the serotypes of both human pathogenic influenza virus A/Aichi/2/1968 H3N2, and avian pathogenic A/FPV/Rostock/34 H7N1 in the hemagglutination inhibition assay. Further, the inhibitory potential of stearylated PeBGF (C18-PeBGF) was investigated by infection inhibition assays, in which we achieved low micromolar inhibition constants against both viral strains. In addition, we compared C18-PeBGF to other published amphiphilic peptide inhibitors, such as the stearylated sugar receptor mimicking peptide (Matsubara et al. 2010), and the “Entry Blocker” (EB) (Jones et al. 2006), with respect to their antiviral activity against infection by Influenza A Virus (IAV) H3N2. However, while this strategy seems at a first glance promising, the native situation is quite different from our experimental model settings. First, we found a strong potential of those peptides to form large amyloid-like supramolecular assemblies. Second, in vivo, the large excess of cell surface membranes provides an unspecific target for the stearylated peptides. We show that acylated peptides insert into the lipid phase of such membranes. Eventually, our study reveals serious limitations of this type of self-assembling IAV inhibitors.

scholarly journals High antiviral effect of TiO2·PL–DNA nanocomposites targeted to conservative regions of (−)RNA and (+)RNA of influenza A virus in cell culture

2016 ◽  
Vol 7 ◽  
pp. 1166-1173 ◽  
Author(s):  
Asya S Levina ◽  
Marina N Repkova ◽  
Elena V Bessudnova ◽  
Ekaterina I Filippova ◽  
Natalia A Mazurkova ◽  
...  
Keyword(s):  
Influenza A Virus ◽  
Influenza A ◽  
Mdck Cells ◽  
Titanium Dioxide Nanoparticles ◽  
Antiviral Effect ◽  
H3n2 Virus ◽  
Dna Fragments ◽  
Efficient System ◽  
Dna Fragment ◽  
Viral Subtypes

Background: The development of new antiviral drugs based on nucleic acids is under scrutiny. An important problem in this aspect is to find the most vulnerable conservative regions in the viral genome as targets for the action of these agents. Another challenge is the development of an efficient system for their delivery into cells. To solve this problem, we proposed a TiO2·PL–DNA nanocomposite consisting of titanium dioxide nanoparticles and polylysine (PL)-containing oligonucleotides. Results: The TiO2·PL–DNA nanocomposites bearing the DNA fragments targeted to different conservative regions of (−)RNA and (+)RNA of segment 5 of influenza A virus (IAV) were studied for their antiviral activity in MDCK cells infected with the H1N1, H5N1, and H3N2 virus subtypes. Within the negative strand of each of the studied strains, the efficiency of DNA fragments increased in the direction of its 3’-end. Thus, the DNA fragment aimed at the 3’-noncoding region of (−)RNA was the most efficient and inhibited the reproduction of different IAV subtypes by 3–4 orders of magnitude. Although to a lesser extent, the DNA fragments targeted at the AUG region of (+)RNA and the corresponding region of (−)RNA were also active. For all studied viral subtypes, the nanocomposites bearing the DNA fragments targeted to (−)RNA appeared to be more efficient than those containing fragments aimed at the corresponding (+)RNA regions. Conclusion: The proposed TiO2·PL–DNA nanocomposites can be successfully used for highly efficient and site-specific inhibition of influenza A virus of different subtypes. Some patterns of localization of the most vulnerable regions in IAV segment 5 for the action of DNA-based drugs were found. The (−)RNA strand of IAV segment 5 appeared to be more sensitive as compared to (+)RNA.

scholarly journals Haemagglutinin of Influenza A Virus Is a Target for the Antiviral Effect of NorakinR

1986 ◽  
Vol 67 (6) ◽  
pp. 1115-1122 ◽  
Author(s):  
Y. Ghendon ◽  
S. Markushin ◽  
H. Heider ◽  
S. Melnikov ◽  
V. Lotte
Keyword(s):  
Influenza A Virus ◽  
Influenza A ◽  
Antiviral Effect

scholarly journals Pudilan xiaoyan oral liquid (PDL) inhibit the replication of influenza A virus through regulating TLR3/MyD88 signaling pathway

2022 ◽  
Author(s):  
Zheng Zhihui ◽  
Yuqian Zhang ◽  
Gang Tian ◽  
Zehua Wang ◽  
Ronghua Wang ◽  
...  
Keyword(s):  
Influenza Virus ◽  
Influenza A Virus ◽  
Influenza A ◽  
Antiviral Effect ◽  
Inhibitory Effect ◽  
Tnf Α ◽  
Oral Liquid ◽  
Ifn Γ

Abstract Background Pudilan Xiaoyan Oral Liquid (PDL) as a famous Chinese patent medicine has been widely used for treating upper respiratory tract infection. However, the antiviral effect of PDL remain unclear. Here, the antiviral effect of in vitro and in vivo of PDL against influenza A virus were for the first time investigated. Methods The in vitro inhibitory effect of PDL on influenza A virus was investigated using MDCK cell model. The in vivo inhibitory effect on influenza virus pneumonia was evaluated with the ICR female mice (14-16 g) model infected by influenza A virus (A/FM/1/47, H1N1, mouse-adapted). Moreover, expression levels of inflammatory cytokines including TNF-α, IP10, IL-10, IL-1β, IL-6 and IFN-γ in lung tissue were measured by qRT-PCR. The potential mechanism of PDL against acute lung injury caused by influenza A virus was investigated by RT-PCR and Western blot. Results Our results indicated that in vitro PDL has a broad-spectrum inhibitory effect on different subtypes of influenza A viruses and in vivo PDL could dose-dependently prevent weight loss of mice, increase food intake and reduce mortality caused by influenza A H1N1 virus. Furthermore, PDL could markedly improve the acute lung injury caused by influenza A virus and significantly reduce the mRNA levels of inflammatory factors such as TNF-α, IP10, IL-10, IL-1β, IL-6, and IFN-γ. Mechanistic research indicated that the protective effect of PDL on viral pneumonia might be achieved by inhibiting TLR3/MyD88/IRAK4/TRAF3 signaling pathway. Conclusion PDL not only showed a good inhibitory effect on influenza A virus in vitro, but also exhibited a significant protective effect against lethal influenza virus infection in vivo. These findings provide evidence for the clinical treatment of influenza A virus infection with PDL.

scholarly journals Antiviral effect of Glycine coated Iron oxide nanoparticles iron against H1N1 influenza A virus

2016 ◽  
Vol 45 ◽  
pp. 281-282 ◽  
Author(s):  
R. Kumar ◽  
G.C. Sahoo ◽  
M. Chawla-Sarkar ◽  
M.K. Nayak ◽  
K. Trivedi ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Influenza A Virus ◽  
Iron Oxide Nanoparticles ◽  
Influenza A ◽  
Antiviral Effect ◽  
H1n1 Influenza ◽  
Oxide Nanoparticles

Antiviral effect of forsythoside A from Forsythia suspensa (Thunb.) Vahl fruit against influenza A virus through reduction of viral M1 protein

2017 ◽  
Vol 209 ◽  
pp. 236-247 ◽  
Author(s):  
Anna Hing-Yee Law ◽  
Cindy Lai-Hung Yang ◽  
Allan Sik-Yin Lau ◽  
Godfrey Chi-Fung Chan
Keyword(s):  
Influenza A Virus ◽  
Influenza A ◽  
Antiviral Effect ◽  
M1 Protein ◽  
Forsythia Suspensa

scholarly journals Antiviral Activity of Isoimperatorin Against Influenza A Virus in vitro and its Inhibition of Neuraminidase

2021 ◽  
Vol 12 ◽  
Author(s):  
Yanni Lai ◽  
Tiantian Han ◽  
Shaofeng Zhan ◽  
Yong Jiang ◽  
Xiaohong Liu ◽  
...  
Keyword(s):  
Antiviral Activity ◽  
Influenza A Virus ◽  
Influenza A ◽  
Direct Interaction ◽  
Public Health Problem ◽  
Antiviral Effect ◽  
Progeny Virus ◽  
Major Public Health Problem ◽  
Protein Amino Acid

Influenza A virus (IAV) poses a severe threat to human health and is a major public health problem worldwide. As global anti-influenza virus drug resistance has increased significantly, there is an urgent need to develop new antiviral drugs, especially drugs from natural products. Isoimperatorin, an active natural furanocoumarin, exhibits a broad range of pharmacologic activities including anticoagulant, analgesic, anti-inflammatory, antibacterial, anti-tumor, and other pharmacological effects, so it has attracted more and more attention. In this study, the antiviral and mechanistic effects of isoimperatorin on influenza A virus in vitro were studied. Isoimperatorin illustrated a broad-spectrum antiviral effect, especially against the A/FM/1/47 (H1N1), A/WSN/33 (H1N1, S31N, amantadine resistant), A/Puerto Rico/8/34 (H1N1), and A/Chicken/Guangdong/1996 (H9N2) virus strains. The experimental results of different administration modes showed that isoimperatorin had the best antiviral activity under the treatment mode. Further time-of-addition experiment results indicated that when isoimperatorin was added at the later stage of the virus replication cycle (6–8 h, 8–10 h), it exhibited an effective antiviral effect, and the virus yield was reduced by 81.4 and 84.6%, respectively. In addition, isoimperatorin had no effect on the expression of the three viral RNAs (mRNA, vRNA, and cRNA). Both the neuraminidase (NA) inhibition assay and CETSA demonstrated that isoimperatorin exerts an inhibitory effect on NA-mediated progeny virus release. The molecular docking experiment simulated the direct interaction between isoimperatorin and NA protein amino acid residues. In summary, isoimperatorin can be used as a potential agent for the prevention and treatment of influenza A virus.

scholarly journals 3-O-Galloylated Procyanidins from Rumex acetosa L. Inhibit the Attachment of Influenza A Virus

PLoS ONE ◽  
2014 ◽  
Vol 9 (10) ◽  
pp. e110089 ◽  
Author(s):  
Andrea Derksen ◽  
Andreas Hensel ◽  
Wali Hafezi ◽  
Fabian Herrmann ◽  
Thomas J. Schmidt ◽  
...  
Keyword(s):  
Influenza A Virus ◽  
Influenza A ◽  
Rumex Acetosa

Antiviral Effect of the Sulfated Polysaccharide, p-KG03, Against Influenza A Virus

2011 ◽  
Vol 90 (2) ◽  
pp. A34-A35
Author(s):  
Meehyein Kim ◽  
So-Yeon Kim ◽  
Hae Soo Kim ◽  
Joung Han Yim ◽  
Woo Ghil Lee ◽  
...  
Keyword(s):  
Influenza A Virus ◽  
Influenza A ◽  
Antiviral Effect ◽  
Sulfated Polysaccharide
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