tetano
Editor, Senior Moderator
Phytomedicine. 2017 Dec 1;36:18-25. doi: 10.1016/j.phymed.2017.09.009. Epub 2017 Sep 25.
[h=1]Anti-inflammatory and antiviral activities of cynanversicoside A and cynanversicoside C isolated from Cynanchun paniculatum in influenza A virus-infected mice pulmonary microvascular endothelial cells.[/h] Wei P[SUP]1[/SUP], Zhang T[SUP]1[/SUP], Dong H[SUP]1[/SUP], Chen Q[SUP]1[/SUP], Mu X[SUP]2[/SUP], Hu G[SUP]3[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] [h=4]BACKGROUND:[/h] Outbreaks of the influenza A virus (IAV) often occur in various avian and mammalian species, including humans, causing serious respiratory injury worldwide. Therapeutic actions are limited to vaccines and a few antiviral drugs. Combination antiviral compounds and anti-inflammatory modulators to control the propagation of viruses would be more efficient therapeutic strategies for infectious diseases.
[h=4]PURPOSE:[/h] This study was designed to isolate anti-inflammatory and antiviral compounds from Cynanchun paniculatum and elucidate their potential molecular mechanisms.
[h=4]METHODS/STUDY DESIGNS:[/h] Bioactivity-guided isolation (via in vitro anti-inflammatory assay) was performed on the ethanolic extract of C. paniculatum, the structures of active compounds were elucidated by comparing spectral data (ESI-MS, [SUP]1[/SUP]H NMR and [SUP]13[/SUP]C NMR) with literature values. The antiviral activity of active compounds against Influenza A virus (IAV) was determined using the cytopathic effect (CPE) inhibition assay. Inhibitory effects of active compounds on influenza A/FM1/1/47 (H1N1) virus infection were also determined by RT-PCR. Effect of active compounds on NF-kB and MAPK signaling pathways after virus infection was determined by ELISA.
[h=4]RESULTS:[/h] Two compounds that showed great anti-inflammatory activity were isolated from C. paniculatum and elucidated as cynanversicoside A and cynanversicoside C. Cytokine assay demonstrated that cynanversicoside A and cynanversicoside C can suppress the production of TNF-α, IL-6 and IL-1β in Mice Pulmonary Microvascular Endothelial Cells (MPMEC) after Influenza virus A/FM/1/47 infection (p < .05) and also decreased the expressions of p-p65 and p-IκBα in infected cells. Furthermore, the phosphorylation of p38, ERK and JNK was also significantly attenuated. Subsequently, cynanversicoside A and cynanversicoside C treatment resulted in decreased viral replication and viral mRNA synthesis.
[h=4]CONCLUSIONS:[/h] These results indicate that cynanversicoside A isolated from C. paniculatum has potent anti-inflammatory and antiviral effects on IAV-infected MPMEC by the regulation of NF-κB and MAPK signaling pathways.
Copyright ? 2017 Elsevier GmbH. All rights reserved.
[h=4]KEYWORDS:[/h] Cynanchun paniculatum; Cynanversicoside A; Cynanversicoside C; Influenza virus; NF-κB and MAPK
PMID: 29157813 DOI: 10.1016/j.phymed.2017.09.009
[h=1]Anti-inflammatory and antiviral activities of cynanversicoside A and cynanversicoside C isolated from Cynanchun paniculatum in influenza A virus-infected mice pulmonary microvascular endothelial cells.[/h] Wei P[SUP]1[/SUP], Zhang T[SUP]1[/SUP], Dong H[SUP]1[/SUP], Chen Q[SUP]1[/SUP], Mu X[SUP]2[/SUP], Hu G[SUP]3[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] [h=4]BACKGROUND:[/h] Outbreaks of the influenza A virus (IAV) often occur in various avian and mammalian species, including humans, causing serious respiratory injury worldwide. Therapeutic actions are limited to vaccines and a few antiviral drugs. Combination antiviral compounds and anti-inflammatory modulators to control the propagation of viruses would be more efficient therapeutic strategies for infectious diseases.
[h=4]PURPOSE:[/h] This study was designed to isolate anti-inflammatory and antiviral compounds from Cynanchun paniculatum and elucidate their potential molecular mechanisms.
[h=4]METHODS/STUDY DESIGNS:[/h] Bioactivity-guided isolation (via in vitro anti-inflammatory assay) was performed on the ethanolic extract of C. paniculatum, the structures of active compounds were elucidated by comparing spectral data (ESI-MS, [SUP]1[/SUP]H NMR and [SUP]13[/SUP]C NMR) with literature values. The antiviral activity of active compounds against Influenza A virus (IAV) was determined using the cytopathic effect (CPE) inhibition assay. Inhibitory effects of active compounds on influenza A/FM1/1/47 (H1N1) virus infection were also determined by RT-PCR. Effect of active compounds on NF-kB and MAPK signaling pathways after virus infection was determined by ELISA.
[h=4]RESULTS:[/h] Two compounds that showed great anti-inflammatory activity were isolated from C. paniculatum and elucidated as cynanversicoside A and cynanversicoside C. Cytokine assay demonstrated that cynanversicoside A and cynanversicoside C can suppress the production of TNF-α, IL-6 and IL-1β in Mice Pulmonary Microvascular Endothelial Cells (MPMEC) after Influenza virus A/FM/1/47 infection (p < .05) and also decreased the expressions of p-p65 and p-IκBα in infected cells. Furthermore, the phosphorylation of p38, ERK and JNK was also significantly attenuated. Subsequently, cynanversicoside A and cynanversicoside C treatment resulted in decreased viral replication and viral mRNA synthesis.
[h=4]CONCLUSIONS:[/h] These results indicate that cynanversicoside A isolated from C. paniculatum has potent anti-inflammatory and antiviral effects on IAV-infected MPMEC by the regulation of NF-κB and MAPK signaling pathways.
Copyright ? 2017 Elsevier GmbH. All rights reserved.
[h=4]KEYWORDS:[/h] Cynanchun paniculatum; Cynanversicoside A; Cynanversicoside C; Influenza virus; NF-κB and MAPK
PMID: 29157813 DOI: 10.1016/j.phymed.2017.09.009