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In vitro antiviral activity of Phyllanthus orbicularis extracts against herpes simplex virus type 1. 2003
J A Fernández Romero, and
G Del Barrio Alonso, and
B Romeu Alvarez, and
Y Gutiérrez, and
V S Valdés, and
F Parra
Departamento de Microbiología y Virología, Facultad de Biología, Universidad de La Habana, Ciudad Habana, Cuba.
The antiviral activity of butanol- and acetic acid-soluble fractions, prepared from the leaves and stems of Phyllanthus orbicularis H.B.K., has been investigated against acyclovir-sensitive or -resistant herpes simplex virus type 1 (HSV-1) strains, using human foreskin fibroblast (HFF) and green ape kidney (Vero) cell lines. Both fractions showed antiviral selectivity indexes (SI) from 10.3 to 22.8, while their extracellular virucidal activities reached SI values ranging from 371 to 1,040. Time-addition experiments suggested that the active compounds present in the studied fractions acted on early steps of the virus replication cycle.
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