[Effects of lipopolysaccharides of Bacterium prodigiosum on tumor growth and immunosuppression in mice].

Objective: To observe the effects of lipopolysaccharides of Bacterium prodigiosum (BP-LPS) in inhibiting tumor growth and improving immunosuppression in mice.

Methods: In mice bearing S180 tumor and a mouse model of immunosuppression induced by cyclophosphamide (CTX), the tumor growth, indexes of the immune organs and peripheral white blood cell count were measured after intraperitoneal injection of BP-LPS.

Results: Injections of BP-LPS (40 U/kg) for 8 consecutive days resulted in a significant inhibition of the tumor growth in mice bearing S180 tumor (P<0.

[Studies on TLC fingerprint of flavonoids in rhizome of Polygonatum odoratum].

Objective: To study the thin layer chromatographic (TLC) fingerprint of flavonoid constituents from Polygonatum odoratum, to set up the identification protocol of the herbal and provide scientific information for its quality control.

Method: The ethanol extracts were separated on silica gel G precoated plate with a mixture of toluene-ethylacetate-formic acid (5:4:1) as the mobile phase. The spots were visualized with ammonia vapor, then were examined under ultraviolet light (365 nm).