Virucidal activity and chemical composition of essential oils from aromatic plants of central west Argentina.
The essential oils of seven aromatic plants from central west Argentina were isolated by steam distillation and analyzed by a gas chromatography/mass spectrometry technique. The oils were screened for cytotoxicity and in vitro inhibitory activity against herpes simplex virus type 1 (HSV-1), dengue virus type 2 (DENV-2) and Junin virus (JUNV). The oils showed a variable virucidal action according to the virus. JUNV was the least susceptible virus in comparison with HSV-1 and DENV-2. The better relationship between cytotoxicity and inhibitory activity was observed for the essential oil of Lantana grisebachiii (Seckt.) var. grisebachii against DENV-2 and HSV-1 with IC50 (inhibitory concentration 50%) values of 21.1 and 26.1 ppm, respectively. This effect was specific since the selectivity indices (ratio cytotoxicity/virucidal activity) were > 23.7 and > 19.1 for DENV-2 and HSV-1, respectively. Furthermore, the oil from L. grisebachii was also an effective inhibitor of HSV-2 and acyclovir resistant variants of herpes virus. This study demonstrates the effective and selective inhibitory activity of the essential oil from Lantana grisebachii against HSV and DENV by direct virus inactivation.
García
Cybele C
CC
Laboratorio de Virología, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, 1428 Buenos Aires, Argentina.
Acosta
Eliana G
EG
Carro
Ana C
AC
Fernández Belmonte
María C
MC
Bomben
Renata
R
Duschatzky
Claudia B
CB
Perotti
Marina
M
Schuff
Carola
C
Damonte
Elsa B
EB
D000998:Antiviral Agents / Q000494:pharmacology*; D001118:Argentina; D003716:Dengue Virus / Q000187:drug effects; D018259:Herpesvirus 1, Human / Q000187:drug effects; D018051:Junin virus / Q000187:drug effects; D032410:Lantana / Q000737:chemistry*; D009822:Oils, Volatile / Q000302:isolation & purification* / Q000494:pharmacology; D010946:Plants, Medicinal / Q000737:chemistry*
D000998:Antiviral Agents; D009822:Oils, Volatile