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2014 ; 7
(ä): 384
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Effects of flavonoid-induced oxidative stress on anti-H5N1 influenza a virus
activity exerted by baicalein and biochanin A
#MMPMID24958200
Michaelis M
; Sithisarn P
; Cinatl J Jr
BMC Res Notes
2014[Jun]; 7
(ä): 384
PMID24958200
show ga
BACKGROUND: Different flavonoids are known to interfere with influenza A virus
replication. Recently, we showed that the structurally similar flavonoids
baicalein and biochanin A inhibit highly pathogenic avian H5N1 influenza A virus
replication by different mechanisms in A549 lung cells. Here, we investigated the
effects of both compounds on H5N1-induced reactive oxygen species (ROS) formation
and the role of ROS formation during H5N1 replication. FINDINGS: Baicalein and
biochanin A enhanced H5N1-induced ROS formation in A549 cells and primary human
monocyte-derived macrophages. Suppression of ROS formation induced by baicalein
and biochanin A using the antioxidant N-acetyl-L-cysteine strongly increased the
anti-H5N1 activity of both compounds in A549 cells but not in macrophages.
CONCLUSIONS: These findings emphasise that flavonoids induce complex
pharmacological actions some of which may interfere with H5N1 replication while
others may support H5N1 replication. A more detailed understanding of these
actions and the underlying structure-activity relationships is needed to design
agents with optimised anti-H5N1 activity.
|*Acetylcysteine/pharmacology
[MESH]
|Anticarcinogenic Agents/pharmacology
[MESH]
|Antioxidants/pharmacology
[MESH]
|Antiviral Agents/pharmacology
[MESH]
|Cell Line, Tumor
[MESH]
|Cells, Cultured
[MESH]
|Dose-Response Relationship, Drug
[MESH]
|Drug Synergism
[MESH]
|Flavanones/*pharmacology
[MESH]
|Flavonoids/*pharmacology
[MESH]
|Genistein/*pharmacology
[MESH]
|Host-Pathogen Interactions/drug effects
[MESH]
|Humans
[MESH]
|Influenza A Virus, H5N1 Subtype/*drug effects/physiology
[MESH]