title: Combined effects of flavonoids and acyclovir against herpesviruses in cell cultures.
abstract: The combined antiviral effects of some flavonoid compounds and acycloguanosine (acyclovir, Zovirax) were studied on the multiplication of herpes simplex virus types 1 and 2 in HEp-2 cells and on pseudorabies (Aujeszky) virus in chick embryo fibroblast cells by the yield reduction method. The flavonoids quercetin, quercitrin (quercetin-3-L-rhamnoside) and apigenin exhibit antiviral activity against these herpesviruses, and acyclovir is currently one of the most effective antiherpetic agents. In these studies, the simultaneous application of flavonoids with acyclovir resulted in an enhanced antiviral activity. A mathematical formula was used to interpret the drug interaction, resulting in FIC (fractional inhibitory concentration) indices. Meaning a synergic interaction, all combinations exhibited synergy, FIC values of 0.6-0.8 being commonly observed.
authors.affiliation: Institute of Microbiology, Albert Szent-Györgyi University Medical School, Szeged, Hungary.
authors.forename: I
authors.initials: I
authors.lastname: Mucsi
authors.forename: Z
authors.initials: Z
authors.lastname: Gyulai
authors.forename: I
authors.initials: I
authors.lastname: Béládi
mesh_terms: D000212:Acyclovir / Q000494:pharmacology*; D000998:Antiviral Agents / Q000494:pharmacology*; D002460:Cell Line; D020843:Chamomile; D004305:Dose-Response Relationship, Drug; D004357:Drug Synergism; D004359:Drug Therapy, Combination; D005419:Flavonoids / Q000494:pharmacology*; D006564:Herpesviridae / Q000187:drug effects*; D011558:Herpesvirus 1, Suid / Q000187:drug effects; D006801:Humans; D009822:Oils, Volatile / Q000494:pharmacology; D010946:Plants, Medicinal; D011794:Quercetin / Q000031:analogs & derivatives / Q000494:pharmacology; D018139:Simplexvirus / Q000187:drug effects; D014779:Virus Replication / Q000187:drug effects
chemical_list: D000998:Antiviral Agents; D005419:Flavonoids; D009822:Oils, Volatile; C012526:quercitrin; D011794:Quercetin; D000212:Acyclovir