In vitro toxicity evaluations of Tibetan medicine Zuota from four institutions.

Zuota is regarded as the king of Tibetan medicine. However, the major starting material of Zuota is mercury, which is one very toxic heavy metal. This has aroused serious doubts on the biosafety of Zuota containing drugs.

[UPLC fingerprint spectra for discrimination of Aucklandiae radix and Vladimiriae radix].

It's difficult to identify Aucklandiae Radix and Vladimiriae Radix because of their similar composition. In this paper, UPLC method was used to establish their UPLC fingerprint to identify them with the mobile of acetonitrile -0. 05% phosphoric acid water solution by gradient elution at the detection wavelength of 238 nm.

[Spectrum-effect correlation analysis of traditional Tibetan medicine "Morina nepalensis" on nitric oxide production inhibition].

Objective: To establish an HPLC-ELSD fingerprint of the whole herbs of Morina nepalensis and perform the correlation analysis of chemical components of the herb and nitric oxide (NO) production inhibition.

Method: HPLC-ELSD assay was performed to evaluate 10 batches of M. nepalensis herbs.