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OBJECTIVE:To establish the method for the determination of oleanolic acid and ursolic acid in different medicinal parts of Tibetan medicine Pteocephalus hookeri,and compare the differences among the different parts. METHODS:The contents of oleanolic acid and ursolic acid from different medicinal parts(whole plant,aerial part,underground part)of P. hookeri were de-termined by UPLC-PDA. The separation was performed on Acquity UPLC HSS T3 column(150 mm×2.1 mm,1.8 μm)with mobile phase consisted of methanol-0.1 mol/L ammonium acetate(88:12,V/V)at the flow rate of 0.2 mL/min. The detection wavelength was set at 210 nm,and column temperature was 30 ℃. The sample size was 5 μL. RESULTS:The linear ranges of oleanolic acid and ursolic acid were 10.65-1065 μg/mL (r=0.9996) and 18.8-1880 μg/mL (r=0.9994),separately. The recoveries were 96.95%(RSD=1.24%,n=9) and 98.12%(RSD=2.13%,n=9),separately. RSDs of precision,stability and reproducibility tests were all less than 3%. The contents of oleanolic acid and ursolic acid from different medicinal parts in P. hookeri were in de-scending order of aerial part>whole plant>underground part;the average total content of oleanolic acid and ursolic acid from whole plants was 0.35%,the aerial part reached 0.56% and underground part was 0.09%. CONCLUSIONS:The method is rapid, accurate and reproducible,and it is suitable for the content determination of oleanolic acid and ursolic acid in different medicinal parts of Tibetan medicine P. hookeri. The contents of oleanolic acid and ursolic acid from aerial part of P. hookeri are higher than whole plant and underground part. It is suggested to use aerial parts of medicine.
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Objective To investigate the efficacy of nutritional support for human immunodeficiency virus (HIV)-infected and malnutritional patients during perioperative period.Methods The clinical data of 283 HIV-infected patients who were admitted to the Shanghai Public Health Clinical Center from October 2008 to February 2012 were retrospectively analyzed.All patients were divided into malnutritional group and non-malnutritional group according to nutritional condition before operation.Twenty-eight patients with malnutrition (7 patients did not receive perioperative nutritional support due to emergency operation,and they were excluded from the study) and 248 patients in normal nutritional status were enrolled in the study.Nutritional support was given for 5-7 days before operation for patients with malnutrition,and all patients received nutritional support after operation.Differences in the immune function,nutrional status,the incidences of surgical incisional infection and sepsis,and perioperative mortality between the 2 groups were compared.Measurement data were analyzed using the paired t test,and the enumeration data were analyzed using the chi-square test.Results The levels of CD4,CD8 and hemoglobin in patients with malnutrition were (205 ± 24)× 106/L,(559 ± 55)× 106/L and (103 ± 24)g/L after perioperative nutritional support,which were significantly higher than (150 ± 33) × 106/L,(491 ± 45) × 106/L and (97 ± 19)g/L before nutritional support (t =-2.561,-1.302,-1.349,P ＜ 0.05).The levels of CD4,CD8 and hemoglobin were (197 ± 43) × 106/L,(547 ± 52) × 106/L and (103 ± 22) g/L at postoperative day 14,which were decreased compared with those after nutritional support,while no significant difference was detected (t =-1.108,0.600,-0.148,P ＞ 0.05).The incidence of incisional infection in patients with malnutrition was 42.9％ (12/28),which was lower than 45.2％ (112/248) of patients in normal nutritional status,with no significant difference (P ＞0.05).The incidence of postoperative sepsis and perioperative mortality were 75.0％ (21/28)and 3.6％ (1/28) in patients with malnutrition after operation,which were significantly higher than 32.7％ (81/248)and 0.8％ (2/248) in patients in normal nutritional status (P ＜ 0.05).Conclusion The mobidity of HIV-infected patients is high,and nutritional support for HIV-infected patients during perioperative period can improve their immunity.
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Objective To investigate the expression of Notch1 and its ligand DLL4 in human gastric carcinoma tissues and its correlation with tumor angiogenic metastasis.Methods Immunohistochemical SP method was used to detect the expression of Notch1,DLL4 and VEGF in 45 gastric carcinoma tissues and paired adjacent normal gastric mucosa,and the relationship between them and clinico-pathological parameters were analyzed.Results The positive expression rate of Notch1,DLL4 and VEGF in gastric carcinoma were higher than that in normal gastric mucosa(P