Objective To study the viability of S.aureus in common cosmetics and the sensitivities of different detection methods adopted in detecting faecal coliform. Methods A standard method stated in "Hygienic Standard for Cosmetics" and lactose-bile salt medium improved by adding neutralizers were adopted in detecting Faecal coliform. Results The amounts of S.aureus dropped gradually as the prolongation of preservation period and in cosmetics containing or not containing antiseptics were different too. In detecting Faecal coliform, the sensitivity of the improved method was higher than that of the standard method. Conclusion Some ingredients of common cosmetics, especially antiseptics, obviously affected the viability of S.aureus. The lactose-bile salt broths containing Lecithin and Tween 80 were much better than those not containing Lecithin and Tween 80 in detecting faecal coliform.

Objective To evaluate the abilities and thresholds of stroke volume variation (SVV) and pleth variability index (PVI) in predicting fluid responsiveness during increased intra-abdominal pressure.Methods 28 patients undergoing laparoscopy-assisted radical gastrectomy were selected.PV1 was continuously displayed by the Masimo.Radical 7.All patients were also monitored with Vigileo/FloTrac system.Haemodynamic data such as MAP,HR,SVI,SVV,PI,PVI and C VP were recorded before and after volume expansion(HES 6％,7ml/kg).Fluid responsiveness was defined as an increase in SVI≥ 15％ (△ SVI ≥ 15).Results The SVV threshold of 9.5％ before volume expansion was able to diserimihate the responders from the non-responders with a sensitivity of 100％,and a specificity of 63.6％.The threshold for PVI was 14.0％,the sensitivity of 100％ and specificity of 81.8％ were obtained.There was no significant difference between the area under the receiver operating characteristics (ROC) curves of SVV and PVI(0.981,0.939,respectively),and there was significant correlation between the baseline SVV and the baseline PVI(r =0.740,P ＜ 0.01).Conclusion SVV and PVI can predict fluid responsiveness accurately during increased intra-abdominal pressure,the baseline SVV is correlated well with baseline PVI,and the ability of SVV and PVI in predicting fluid responsiveness is similar.

Objective To explore the role of cell cycle regulators in tuberculosis with lung carcinoma.Methods p53,MDM_2,p21~ ras and p21~ WAF1 proteins were detected by LsAB immunohistochemical technique in 69 cases of tuberculosis with lung carcinoma.Results As compared with primary tuberculosis with lung carcinoma,the expression rate p53 or MDM_2 protein in relapsing NPC was similar(78% to 80%,84% to 83%),and the expression rate of p21~ ras and p21~ WAF1 protein in relapsing NPC was obviously descended(73% to 93%,52% to 84%);The high-expression rate of p53 protein in relapsing NPC was similar(42% to 51%),the high-expression rate of MDM_2 protein in relapsing NPC was obviously risen(57% to 32%),and the high-expression rate of p21~ ras and p21~ WAF1 protein in relapsing NPC was obviously descended(16% to 65%,17% to 46%).Among of them,the significant rise of MDM_2 protein expression level in relapsing NPC mainly occurred in the patients of group 2 which relapsing-interval was shorter than 34 months(P

Objective To investigate the influence of a combination of Chinese herbs,Astragalus membranaceus var.mongholicus and A ngelica sinensis (A&A)on the production and elimination of reactive oxygen species (ROS)and the underlying mechanism during the process of renal interstitial fibrosis in the obstructive kidneys of rats with unilateral ureteral obstruction(uuo).Method Male Wistar rats were randomly divided into control,sham,UUO and UAA (UUO+A&A)groups.The rats in UAA group were administered with A&A(14 g/kg)by oral gavage once daily:the ones in sham and UUO group were given with equal volumes of water.Three days after setting up models,pathological injury of renal tissue was evaluated.Level of total antioxidant capacity(T-AOC)and activity of CuZn superoxide dismutase(CuZn-SOD)in renal homogenates were measured bv spectrophotometry.Expression of NADPH oxidase subunits p47-phox,p22-phox and nintrotyrosine was analyzed by Western blot. Results Severe interstitial inflammatory cells infiltration, mild tubular atrophy and interstitial fibrosis were found in UUO group, which were alleviated by A&A administration. Compared to sham group, T-AOC of UUO group was not significantly changed, but the expression of the nitrotyrosine, NADPH oxidase subunits p47-phox and p22-phox was increased significantly (P<0.05). After A&A administration, T-AOC level was increased (2.5±1.1 vs 1.5±0.5, P<0.05) and the expression of nitrotyrosine was decreased (P< 0.05) in UAA group compared with UUO group. Additionally, the expression of p47-phox was reduced at day 3 (P<0.05), accompanied with a reduced expression of p22-phox (P< 0.05). CuZn-SOD activity was not significantly changed among the groups. Conclusion The inhibition of A&A in NADPH oxidase subunits p47-phox and p22-phox, which is responsible for reduction of oxidative stress, is associated with the alleviation of renal fibrosis in obstructive rat kidney.

Objective To explore the related factors of insulin sensitivity in infants and toddlers. Methods From January 2006 to May 2008, 246 infants and 120 toddlers who had regular physical check-ups at the Children Healthcare Center of Third Hospital of Peking University were selected in this retrospective study. The homeostasis model assessment insulin resistance index (HOMA-IR), insulin action index(IAI), fasting glucose-to-insulin ratio (FGIR) and HOMA-β cell function (HOMA-β) were measured with the homeostasis model analysis. According to different glucose metabolic situation of the pregnant mothers and diabetes family history, the infants and toddlers were divided into different groups. The above indicators were compared among groups.Results In infants with maternal diabetes, the levels of HOMA-IR and HOMA-β were 3.24 (2.76-4.12) and 164. 00 (114. 44-192.85), higher than those born to mothers without abnomal glucose metabolism [1.51 (0. 86-2.50) and 67.07 (41.83-106.22)], while the levels of IAI and FGIR were lower[-7.18(-7.41-7.02) and 7.31(5.82-8.55) vs -6.41(-6.92-5.85) and 14.84(9.49-24. 79)] (Z=3. 76,3. 35,3. 76 and 3.71, P＜0. 017). Compared with infants of maternal impaired glucose tolerance,the level of HOMA-IR was higher (Z= 3.19, P＜0.017) in infants with maternal diabetes,the level of IAI was lower(Z= 3. 19, P＜0. 017). No significant difference of insulin sensitivity were observed between infants with and without maternal impaired glucose tolerance (P＞0. 017). The level of HOMA-IR was higher in infants and toddlers with diabetes in first-degree relatives [infants: 3.24(2. 73-4. 13) vs 1.41(0.84-2.50) ; toddlers: 3.98(2.62-4.80) vs 1.70(0.92-3.04); P＜0. 017], while the levels of IAI and FGIR were lower [infants: IAI, -7. 18(-7.42-- 7.00) vs - 6.34 ( - 6.91- 5.82); FGIR, 7.31 (5.40-7.48) vs 14.87 (9.53-25.17); toddlers: IAI,-7.38(-7.57-6.97) vs -6.54(-7.11-5.92); FGIR, 6.17(6.04-8.00) vs 12.65(8.33-21.53), P＜0. 017], and the level of HOMA-β was higher just in the infants [164.00(137.82-198.00) vs 67.06(40.40-106.83), P＜0. 017]. No significant difference was observed in infants with second-degree relatives diabetes and without diabetic family history group (P＞0. 017). Conclusions Maternal diabetes and diabetic family history in first-degree relatives were significantly related to the decrease of insulin sensitivity in infants and toddlers.

Objective To synthesize 99Tcm labeled VEGF fragment (VEGF125-136) and evaluate its biodistribution and imaging in the nude mice bearing human osteosarcoma,in order to find a probe to improve the early diagnosis and targeted therapy of osteosarcoma.Methods VEGF125-136 was synthesized by conventional solid phase synthesis method,and directly coupled with MAG3 to form MAG3-VEGF125-136,then MAG3-VEGF125-136 was labeled with 99Tcm.The osteosarcoma bearing nude mice were randomly divided into four groups by random number table and studied for 99Tcm-MAG3-VEGF125-136 distribution at 0.5,1,2,4 h,respectively.The other 10 osteosarcoma bearing nude mices were divided into the experimental group and competitive inhibition group,and underwent radionuclide imaging.The T/NT ratio was calculated.Data were analyzed using two-sample t test.Results The radioactive labeling rate was greater than 95％,radiochemical purity was still greater than 85％ after 12 h in room temperature.The 99Tcm-MAG3-VEGF125-136 was cleared fast in blood and mainly excreted through the kidneys and liver.Tumor uptake of 99Tcm-MAG3-VEGF125-136 was highest at 1 h with (0.28±0.02) ％ID/g.The T/NT ratios of experimental group at 0.5,1,2,4 h were 1.07±0.10,3.10±0.19,2.63±0.14,1.90±0.09,respectively.In competitive inhibition group,no obvious radioactivity concentration was observed in tumors.The T/NT ratios were 0.99± 0.05,1.06± 0.06,0.98±0.03,0.97±0.03 at 0.5,1,2,4 h respectively.The T/NT ratios were significantly different between the two groups at 1,2,4 h (t=22.52,26.36 and 22.31,all P＜0.05),but no significant difference was observed at 0.5 h (t =1.44,P＞0.05).Conclusion 99Tcm-MAG3-VEGF125-136 has high labeling efficacy,good stability and high specificity to osteosarcoma.It can be used as an agent for early diagnosis and therapy monitoring in osteosarcoma.

OBJECTIVE:To establish a method for the simultaneous determination of acetic acid and succinic acid in Banxia syrup. METHODS:RP-HPLC was performed on the column of GL InterSustain-C18 with mobile phase of 0.03 mol/L ammonium di-hydrogen phosphate buffer solution(pH2.0)-methanol(gradient elution)at a flow rate of 0.8 ml/min,the detection wavelength was 210 nm,column temperature was 30 ℃,injection volume was 10 μl. RESULTS:The linear range was 0.020 98-0.209 8 μg/ml for acetic acid(0.999 9)and 12.04-120.4 μg/ml for succinic acid(r=0.999 9);limits of quantification were 0.15,18.24 ng,limits of detection were 0.045, 5.53 ng;RSDs of precision, stability and reproducibility tests were lower than 2%;recoveries were 97.45%-101.68%(RSD=1.39%,n=9) and 98.31%-101.08%(RSD=1.01%,n=9). CONCLUSIONS:The method is accurate and rapid,and suitable for the simultaneous determination of acetic acid and succinic acid in Banxia syrup.

After the application of associated data in digital library and in library resources integration was described, the necessity of library resources integration was analyzed, the semantic association process of library resources and the problems of library resources in research on semantic association were studied in terms of system construction, technical implementation and discovery algorithm. The semantic integration of library resources was achieved by de-signing the integration framework, ontology and associated data.

Objective To explore the role of cell cycle regulator in tuberculosis with lung cancer.Methods The ex- pression of p21~(WAF1)gene and p53 protein in 101 cases of tuberculosis with lung cancer have been detected by immunohis- toehemical method.Results total positive staining rate of p21~(WAF1)gene and p53 protein was 42.9% and 64.1%; The expression of both was correlated with histological classification and differentiation of carcinoma.Conclusion Detection of p21W AF1 gene and p53 protein expression may have significant value in the prognosis of tuberculosis with lung cancer