Oroxylin A shows limited antiviral activity towards dengue virus.
BMC Res Notes
; 15(1): 154, 2022 May 04.
Article
in En
| MEDLINE
| ID: mdl-35509105
ABSTRACT
OBJECTIVE:
The mosquito transmitted dengue virus (DENV) the causative agent of dengue fever (DF) remains a significant public health burden in many countries. Thailand, along with many countries in Asia and elsewhere, has a long history of using traditional medicines to combat febrile diseases such as DF. Screening bioactive compounds from traditional medicines reported to have antipyretic or anti-inflammatory activity may lead to the development of potent antivirals. In this study oroxylin A (OA), a flavonoid derivative found in Oroxylum indicum (commonly called the Indian trumpet flower or tree of Damocles), was screened for antiviral activity towards DENV.RESULTS:
Cytotoxicity analysis in BHK-21 cells showed a 50% cytotoxic concentration (CC50) of 534.17 µM. The compound showed no direct virucidal activity towards DENV, and pre-treatment of cells had no effect on virus production. A deficit was seen in virus production when cells were post-infection treated with oroxylin A. Under conditions of post-infection treatment, the EC50 value was 201.1 µM, giving a selectivity index (SI) value of 2.66. Accumulation of DENV E protein inside the cell was seen under conditions of post-infection treatment, suggesting that oroxylin A may exert some effects at the virus assembly/egress stages of the replication cycle.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Dengue
/
Dengue Virus
Limits:
Animals
Country/Region as subject:
Asia
Language:
En
Journal:
BMC Res Notes
Year:
2022
Document type:
Article
Affiliation country:
Thailand