Wild Geranium, Cranesbill
Geranium maculatum
Found in rich woods
Wild geraniums are not related to the garden
varieties you get at the nursery.
Photo by Karen Bergeron
Antiviral Res. 2008 Aug;79(2):114-20. Epub
2008 Apr 7.
In vitro and in vivo
anti-hepatitis B virus activities of a plant
extract from Geranium carolinianum L.
Li J, Huang H, Feng M, Zhou W, Shi X, Zhou P.
Department of Biosynthetic Medicinal Chemistry,
School of Pharmaceutical Sciences, Fudan
University, Shanghai 200032, PR China.
Abstract
Natural products provide a large reservoir of
potentially active agents with anti-hepatitis B
virus (HBV) activity. We examined the effect of
the polyphenolic extract from Geranium
carolinianum L. (PPGC) on HBV replication both in
vitro and in vivo. In the human HBV-transfected
liver cell line HepG(2) 2.2.15, PPGC effectively
suppressed the secretion of the HBV antigens in a
dose-dependent manner with IC(50) values of 46.85
microg/ml for HBsAg and 65.60 microg/ml for HBeAg
at day 9. Consistent with the HBV antigen
reduction, PPGC (100 microg/ml) also reduced HBV
DNA level by 35.9%. In the duck hepatitis B virus
(DHBV) infected ducks, after PPGC was dosed
intragastricly (i.g.) once a day for 10 days, the
plasma DHBV DNA level was reduced, with an ED(50)
value of 47.54 mg/kg. In addition, Southern blot
analysis confirmed the in vivo anti-HBV effect of
PPGC in ducks and PPGC also reduced the plasma
and the liver DHBV DNA level in a dose-dependent
manner. Furthermore, significant improvement of
the liver was observed after PPGC treatment, as
evaluated by the histopathological analysis.
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