Fifty kg of roots and stems of Urtica fissa were extracted with hot water and subjected to ultrafiltration to obtain 402 g of crude polysaccharide fraction.
The main active compounds of Urtica remain undetermined, although many compounds were reported in Urtica water or aqueous alcohol extracts, including: fatty acids, sterols, flavonoids, proteins, polysaccharides and lectins (Akbay et al.
In this study, the water extract of Urtica fissa was subjected to ultrafiltration in order to remove the monosaccharides or oligosaccharides, which were decreased to 8% in UFP.
Es necesario considerar que al aumentar progresivamente las cantidades de alcohol cetilico y esperma de ballena como responsables de la consistencia de la crema y disminuir la fraccion acuosa se dificulto mantener en el seno de la preparacion el porcentaje de extracto fluido de Urtica
Stimulation of lymphocyte proliferation and inhibition of nitric oxide production by aqueous Urtica dioica extract.
Urtica dioica extract BNO 1250 inhibits aromatase activity in human JEG-3 cells.
As the toxicology of Urtica herbal extract is concerned, it has to be carfully proven, whether in the allergic skin side-effects observed in some patients after administration of the Urtica extract, the caffeoylesters are involved.
Lipid separation from Urtica dioica: existence of platelet-activating factor.
Urtica dioica plants were collected from the Samsun, Turkey, in July-August (2001), during the early hours of the day.
Modulatory effect of two different doses of Urtica dioica L.
Sivkov A, Kohler S, Engelmann U, Medvedev A, Lopatkin N (2001) Long-term efficacy and safety of a combination of sabal and urtica extracts in LUTS--a placebo-controlled, double-blind, multicenter trial.
Sokeland J (2000) Combined sabal and urtica extract compared with finasteride in men with benign prostatic hyperplasia: analysis of prostate volume and therapeutic outcome.