[Comparative study on HPLC fingerprints between crude and processed Ligustri Lucidi Fructus].

To establish high performance liquid chromatography(HPLC) fingerprints for crude and processed Ligustri Lucidi Fructus,and to evaluate their quality through the similarity calculation and chemical pattern recognition. The separation was performed with Syncronis C_(18) column(4.6 mm × 250 mm, 5 µm), with acetonitrile(A) and 0.1% phosphoric acid solution(B) as the mobile phase for gradient elution, and a detection wavelength of 280 nm. HPLC was used to detect 22 batches of crude and processed Ligustri Lucidi Fructus,and the Similarity Evaluation System for Chromatographic Fingerprint of Traditional Chinese Medicine(2012 Edition) was used to evaluate the similarity among 22 batches. The research on pattern recognition was conducted with cluster analysis(CA), principal component analysis(PCA), and partial least squares discriminate analysis(PLS-DA). HPLC fingerprints of crude and processed Ligustri Lucidi Fructus were established, with similarity ranging from 0.9 to 1.0. The crude and processed Ligustri Lucidi Fructus can be obviously distinguished by using CA, PCA and PLS-DA. According to the results of PLS-DA,11 constituents including hydroxytyrosol, tyrosol, specnuezhenide and oleuropein were the main marker components leading to the difference. The established fingerprint method is stable and reliable, and can provide method basis for quality control of crude and processed Ligustri Lucidi Fructus. Chemical pattern recognition is proved to be helpful in comprehensive quality control and evaluation of Ligustri Lucidi Fructus before and after the process.

[Fingerprint research on immunosuppressive fraction of Rehmanniae Radix by HPLC].

OBJECTIVE: To study the HPLC fingerprint of immunosuppressive fraction of Rehmanniae Radix, the genuine medicinal materials in Henan province. METHODS: By HPLC method,Dikma Platisil-C18 column (250 mm x 4.6 mm, 5 microm) was used with acetonitrile-0.1% phosphoric acid as mobile phase by gradient elution. The detection wavelength was 210 nm, flow rate was 1.0 mL/min and column temperature was set at 30 degrees C. RESULTS: Compared the 10 batches sample of the fingerprint similarity, 18 common peaks were marked and five peaks were identified. The similarities were more than 0.9. CONCLUSION: HPLC fingerprint of immunosuppressive fraction of Rehmanniae Radix is established, which lays the foundation for further pharmacodynamics research on Rehmanniae Radix.

[Study on the triterpenoids from the fruits of Ligustrum lucidum].

OBJECTIVE: To study the triterpenoids from the fruits of Ligustrum lucidum. METHODS: The constituents were extracted with 95% EtOH, partitioned with different solvents, isolated and purified by silica gel, Sephadex LH-20 and PHPLC column chromatography. The structures were elucidated by physicochemical properties and spectroscopic data. RESULTS: Thirteen compounds were isolated and identified as methyl oleanolate (1), 3-O-acetylursolic acid (2), 3-ketooleanolic acid (3), 19alpha-hydroxyl ursolic acid (4), lupeol (5), 3-O-acetyl oleanolic acid (6), oleanolic acid (7), betulin (8), ursolic acid (9), fouquierol (10), 19alpha-hydroxyl acetylursolic acid (11), 3-O-cis-P-coumaroyl maslinic acid (12) and 3-O-trans-P-coumaroyl maslinic acid (13). CONCLUSION: Compounds 1 - 4 are obtained from this plant for the first time.

[Experimental research about the effect of Rehmannia glutinosa on the drug effect fingerprints of the rabbit's blood serum of Yin deficiency and heat flourishing syndrome].

OBJECTIVE: To study about the effect of Rehmannia glutinosa Libosch on the drug effect fingerprints of the rabbit's blood serum of yin deficiency and heat flourishing syndrome. METHODS: The infusion of furosemide and escherichia coli endotoxin were used to replicate rabbit' s yin deficiency and heat flourishing syndrome animal model; high performance liquid chromatography gradient elution was adopped to study the change of the rabbit serum drug effect fingerprint in copying between before and after model-making and administration. RESULTS: Rehmannia glutinosa Libosch mainly affected metabolism level of the inner substance with the function of nourishing yin clearing heat. CONCLUSION: The serum HPLC fingerprint established is capable to reflect the function of nourishing yin clearing heat of Rehmannia glutinosa Libosch; the further study on its drug effect fingerprint will help to clarify its activity and metabolism of action.

[Outcomes and defecation after one-stage transanal endorectal pull-through procedure for Hirschsprung disease].

OBJECTIVE: To evaluate the efficacy, safety, and defecation after one-stage transanal endorectal pull-through(TOSEPT) for Hirschsprung disease. METHODS: Clinical data of 56 patients with Hirschsprung disease undergoing TOSEPT in the Third Hospital of Guangzhou Medical College between 2005 and 2011 were retrospectively analyzed. According to age at operation, the patients were divided into newborn group(n=21, surgery performed within 1 month after birth) and non-newborn group(n=35). Recovery period was defined as the period required for normal defecation pattern after operation. Intraoperative and postoperative parameters were compared. RESULTS: The mean operative time was(121.5±39.2) minutes. The mean length of bowel resection was(17.6±4.2) cm. The mean intraoperative blood loss was(34.6±5.2) ml. The mean postoperative hospital stay was(7.2±3.6) days. Postoperative complication occurred in 6 patients(4 had enteritis and 2 had recurrent constipation) in whom 1 were considered as failure of TOSEPT because of redo-surgery or persistent problems in defecation. The remaining 53 patients had normal defecation pattern after(9.2±5.8) weeks of postoperative recovery period. Neonatal cases had significantly shorter operative time and postoperative hospital stay, and longer postoperative recovery period than non-neonatal cases(P<0.05). There were no significant differences in intraoperative blood loss and postoperative complication rate between the two groups(P>0.05). CONCLUSIONS: TOSEPT is effective and safe in the management of patients with Hirschsprung disease. However, a postoperative recovery period is required for a normal defecation pattern. Although neonatal cases have significantly shorter operative time and postoperative hospital stay than non-neonatal cases, but longer postoperative recovery period should be consider when evaluating the outcome of TOSEPT.