Investigation of some Hypericum species native to Southern of Brazil for antiviral activity

Antiviral activity-guided fractionation from Araucaria angustifolia leaves extract

“…Moreover, the research for new antiviral drugs, especially those from our biota, is still being carried out in tune with Andrighetti-Frohner et al Silva et al (2006), Schmitt et al (2001), and Simões et al (1999). Accordingly, this study may contribute to conserve local cultural traditions and increase the knowledge and the preservation of this species.…”

Hypericum sp.: essential oil composition and biological activities

“…Ethanolic and water extracts of the flowers of H. venustum showed a strong reducing power, free radicals and hydrogen peroxide scavenging activity (Spiteller et al 2008). Various extracts from H. undulatum, such as EO, decoctions and ethanolic extracts showed inhibitory activity of acetylcholinesterase and antioxidant activity, demonstrating that it may help to prevent or alleviate patients suffering from Alzheimer's Disease (Ferreira et al 2006 (Schmitt et al 2001). The fact that FIV has similarity to HIV-1 in many molecular and biochemical properties, and the pathogenesis of FIV infection is thought to be similar to that of HIV infection makes it an attractive model for AIDS research.…”

Antiviral activity in vitro of Urtica dioica L., Parietaria diffusa M. et K. and Sambucus nigra L.

“…In the study of natural products that have antiviral activity, previous studies have shown that inhibition of syncytium formation in CrFK cells is a useful screening method for de- tecting substances that block FIV infection, such as natural extracts (Nicoletti et al, 1999;Schmitt et al, 2001).…”