[Determination of chyodeoxycholic acid in Bile Arisaema by HPLC-ELSD].

Objective: To develop an HPLC method for the determination of hyodeoxycholic acid in Bile Arisaema.

Method: The methanol extracts were separated on a Diamonsil ODS column eluted at 35 degrees C with a mixture of methanol-water-glacial acetic acid (75:25:0.01) at flow-rate 1.

[Quantititive study for chromatographic fingerprints of processed products of Paeonia lactiflora].

Objective: To explore the utility of Principal Factor Analysis (PFA) in chromatographic data for quality control.

Method: Chromatographic fingerprints of processed root pieces of Paeonia lactiflora were determined by HPLC, the PFA was used for data processing.

Result: The quantitative differences among different growing areas and different processing batches were found with the method.

Protective effect of recombinant human somatotropin on amyloid beta-peptide induced learning and memory deficits in mice.

This study aimed to examine the effects of the recombinant human somatotropin (rhGH) on protecting neuronal function, and improving learning and memory deficits in mice. Mice were intracerebroventricularly (icv) injected with the aggregated amyloid beta-peptide (Abeta) to mimic the Alzheimer's disease (AD). The learning and memory functions in mice were examined by the step through test (an index of long-term memory) and the water maze performance (an index of spatial recognition memory).

[Experimental study on processing of Paeonia lactiflora].

Objective: To provide experimental data for the quality control of processed Paeonia lactiflora, a Chinese herbal medicine.

Method: Traditional processing of P. lactiflora was simulated, content of paeoniflorin and water extracts among different preparations were assayed by HPLC; The quantitative correlations among different processing conditions were analyzed, the effects of processing parameters on the contents of paeoniflorin and water extracts were assayed a nanalysed.

[Study on quality control of Paeonia lactiflora].

Objective: To provide the experimental data for the quality control of Paeonia lactiflora a prepared Chinese medicinal herb.

Method: The contents paeoniflorin among different growing areas and different processing methods methods were assayed by HPLC.

Result: The quantitative differences of paeoniflorin content among different growing areas and different processing methods wereanalyzed quantitatively.