[Objective]To examine the effects of fast setting calcium phosphate scaffold on human mesenchymal stem cells(MSCs) adhesion and proliferation.[Method]Scaffolds were self-hardened in molds.Three ml human bone marrow aspirates,taken form the iliac crest of normal donors were suspended in low glucose DMEM supplemented with 10% fetal bovine serum.Atfer 72 hours the nonadherent cells were removed by changing medium,and the adherent layer cultured until it reached 80% conference.Cultured cells at passage 3 were used for the experiments.MSCs were seeded on calcium phosphate scaffold.The cell-scaffold constructs were cultured with complete media for 1 week.Scanning electron microscope(SEM)and the terazolium-based colorimetric assay(MTT test)examinations were performed.[Result]When cells were cultured in scaffolds in vitro,the number of cells on scaffold increased with time.SEM showed that the scaffold had a three-dimensional interconnected pore structure.The cells appeared to infiltrate into the macropores of the scaffold and the extracellular matrix components were observed.[Conclusion]This study demonstrates that the fast setting calcium phosphate scaffold has good biocompatibility,cells are able to adhere and proliferate on scaffold specimens,and it is a good substrate candidate for tissue engineered bone substitute.

Objective To study the quality standard of different specifications of Frutus Aurantii Immaturus. Methods The contents of synephrine, volatile oil, total ash, acid- insoluble ash and water in different specifications of Frutus Aurantii Immaturus were determined by HPLC or other methods according the china pharmacopoeia. Results The contents of volatile oil and synephrine in different specifications of Frutus Aurantii Immaturus were obviously different, and in accordance with empirically traditional classification. The contents of the total ash, acid- insoluble ash and water were similar in the different specifications and the total ash content was lower than 7 % which was in accordance with that recorded in China Pharmacopoeia.Conclusion Volatile oil, acid- insoluble ash, water and synephrine with a definite content limit can be chosen as the parameters for the research of quality standard of Frutus Aurantii Immaturus, which will supply evidence for the medicinal trade and research of Frutus Aurantii Immaturus.

Objective To establish a method for the determination of berberine hydrochloride in Weichangning granules.Methods RP-HPLC method was set up,using Merck-LiChrospher RP-18 column(4 mm ? 250 mm,5?m);the mobile phase was methnd-water(including 0.18 % phosphoric acid and 0.22 % sodium laurylsulfonate)(68 ∶ 32),flow rate being 1.0 mL / min;column temperature was 35 ℃ and the detection wavelength was 345nm.Results A good linearity was obtained in the range of 0.30 ~ 1.80 ?g(r = 0.9995).The average recovery was 98.32 %,with RSD 0.83 %.Conclusion The method is simple,rapid and with good reproducibility for the determination of berberine hydrochloride in Weichangning granules.

To compare the effects of laparoscopic total or subtotal hysterectomy and myomectomy on ovarian reserve by measuring the serum level of anti-Mullerian hormone (AMH).A total of 96 patients with uterine fibroids underwent total laparoscopic hysterectomy (TLH group,n =32),laparoscopic subtotal hysterectomy (LSH group,n =31) and laparoscopic myomectomy (LM group,n =33).Changes in ovarian reserve were examined by measuring the level of AMH pre-operation and at 1 and 4 months post-operation.No significant differences existed in AMH in LM group[(1.42 ±0.65),(1.31 ±0.53) & (1.33 ±0.61) μg/L,P ＞ 0.05].The levels of AMH in both groups were significantly lower than those at pre-operation [(1.17 ± 0.11),(1.01 ±0.10),(0.48±0.54) & (1.18±0.93),(0.45 ±0.39),(0.14±0.0) μg/L,P＜0.001].The mean percentage decrease in AMH was lower in TLH group than that in LSH group at 4-month follow-up [(-37.4 ± 37.6) ％ vs.(-27.0 ± 23.0) ％,P =0.017].The results showed that LM had no effect on ovarian reserve.Both LSH and TLH had adverse effects on ovarian reserve and TLH was more marked.

Objective To evaluate the relation of circadian blood pressure rhythm with vascular status in elderly patients with isolated systolic hypertension.MethodsAnkle-brachial index (ABI),brachial-ankle pulse wave velocity (baPWV) and carotid intima-media thickness (IMT) were measured in 74 elderly patients with non-dipper hypertension (non-dipper group)、78 elderly patients with dipper hypertension ( dipper group),and 72 healthy controls ( control group).Results In comparison with the dipper group,baPWV and IMT of the non-dipper group were significantly increased [ baPWV (1801.61± 314.27) vs (1658.67±274.80) (cm/s)],P＜0.01; IMT:(0.96 ±0.22) vs (0.87 +0.19) (mm),(P＜0.05),while ABI of the non-dipper group was decreased (1.03 ±0.17 vs1.12 ±0.18,P＜0.01).Identification rate was significantly different among 3 groups when baPWV ＞1400 cm/s (x2 =12.57,P ＜0.01) or ABI ＜0.9 ( x2 =9.74,P ＜0.01).The detection of carotid plaques was also significantly different ( x2 =16.49,P ＜ 0.01).Conclusions These findings suggest that vascular damage could be found in elderly patients with isolated systolic hypertension,especially in those with non-dipper hypertension.ABI,baPWV and IMT measurement may be helpful for the assessment of vascular status.

The article is to discuss the effect of the trained SPs acted by retired nurses in the test of internal medicine inquiry in OSCE for the graduates. The results were evaluated by those samples drawn from medical students who took part in OSCE and the professors. The evaluation of the SPs was objective and accurate, and they acted well. There are remarkable advantages in retired nurses simulating standardized patients, and it deserves extensive application in clinical medical education in our country.

To further explore the result of bilingual teaching in pediatrics,we randomly chose 200 undergraduates of 4 class and released students'questionnaires about bilingual teaching with teaching content before and after class to assess students'understanding of bilingual teaching and analysed appraisal result.We found no significant difference of student score between students accepting bilingual teaching and not accepting the bilingual teaching,but there was difference for English tests and expression level.So we think that students can fully accept the bilingual teaching of pediatrics under the premise with selecting appropriate teaching methods and means.

Objective To study the antibacterial property of silver loaded titanium dioxide (TiO2) antibacterial coated endotracheal intubation tube,and to determine the minimum effective antibacterial concentration.Methods Intubation tubes coated with different concentrations of antibacterial agents were prepared with sol gel method.Polyethylene endotracheal intubation tubes were used as substrate,and silver loaded TiO2 was used as the antibacterial agent.According to the different antibacterial concentrations of the antibacterial agent,the tubes were divided into nine groups:10.0％ group,5.0％ group,2.0％ group,1.5％ group,1.0％ group,0.8％ group,0.6％ group,0.2％ group,and conrol group.They were respectively immersed in three standard bacteria suspensions with 1.0 × l05 cfu/mL:Pseudomonas aeruginosa,Staphylococcus aureus,and Escherichia coll Together with standard bacteria liquid group,there were 10 experimental groups.They were kept overnight for 24 hours.10 μL of respective culture medium was smeared on blood agar culture medium.After being cultured overnight in 35 ℃,the number of bacteria colonies was respectively counted.Results In 1.0 × 105 cfu/mL of three standard bacteria liquids with antibacterial agent concentration≥ 1.0％,three bacterial colonies had un-obviously growth rate.Almost the same strong antibacterial effects to achieve sterilizing rates of more than 98％ was shown in each group of the antibacterial coating endotracheal intubation tubes (all P＞0.05).As the antibacterial agent concentration decreased,three bacterial colonies were increasing gradually.Intermediate antibacterial effects were shown in tubes of 0.8％ group,with significant statistic difference as compared with 1.0％ and 0.6％ groups [Pseudomonas aeruginosa:7.300 (4.050,8.350) vs.0.200 (0.050,1.200),9.700 (9.000,10.000); Staphylococcus aureus:4.100 (3.300,4.650) vs.0.000 (0.000,0.150),5.800 (5.350,7.650); Escherichia coli:1.400 (0.750,3.750) vs.0.050 (0.025,0.050),9.500 (8.500,9.800),all P＜0.01].Conclusions Silver loaded TiO2 antibacterial coated endotracheal intubation tube had definite antibacterial properties,which were related to the antibacterial concentration.Strong antibacterial effects were shown when antibacterial concentration was above 1.0％,with bacteria almost completely killed in the immersing liquid.

Objective To evaluate the difference between nodal and extra-nodal diffuse large B-cell lymphoma (DLBCL) in clinical-pathological feature and prognosis.Methods The clinical data of 134 cases of DLBCL patients were reviewed and analyzed.Results The DLBCL patients accounted for 52.14 ％ (134/257) of non-Hodgkin lymphoma of the same period and the extra-nodal DLBCL patients accounted for 69.4 ％.The proportion of stage Ⅲ/Ⅳ disease in extra-nodal DLBCL and nodal DLBCL were 55.9 ％ (52/93) and 75.6 ％(31/41),respectively.Elevated LDH was reported in 33.3 ％ (31/93) of extra-nodal DLBCL and 58.5 ％ (24/41)of nodal DLBCL Other clinical characteristics such as B symptoms,bulky disease,elevated ESR,ECOG scores and IPI scores were not significantly different between these two groups (all P ＞ 0.05).No difference in the frequency of GCB and non-GCB subtypes was observed between extra-nodal and nodal DLBCL (P =0.623).The 3-year overall survival rates and 3-year progression free survival rates for extra-nodal and nodal DLBCL were 73.2 ％,55.2 ％ (P =0.065) and 46.3 ％,44.1％ (P =0.748).Conclusions The morbidity of extranodal DLBCL is high.Primary extra-nodal DLBCL patients present early-stage disease and normal LDH more frequently than the nodal DLBCL,while no significant difference in the frequency of pathological subtypes and 3-year OS and PFS is observed between these two groups.

Objective To evaluate the relationship between airway obstruction and peripheral arterial stiffness in elderly patients with chronic obstructive pulmonary disease (COPD).Methods Ninetyeight elderly patients with COPD were enrolled.The patients were divided into two groups according to forced expired volume in 1 second (FEV1) percentage of predicted (FEV1 ％):mild-moderate group (FEV1 ％ ≥ 50％,62 cases) and severe group (FEV1％ ＜ 50％,36 cases).The brachium-ankle pulse wave velocity (baPWV),body mass index (BMI),24 h average heart rate,blood level of lipid,fasting blood glucose,arterial partial pressure of oxygen (PaO2) and high sensitivity C reactive protein (hs-CRP) level were compared between two groups.Results Compared with mild-moderate group,the BMI in sever group was lower:(22.9 ± 4.3) kg/m2 vs.(25.4 ± 3.3) kg/m2,24 h average heart rate was higher:(77.5 ± 12.8) times/rmin vs.(70.7 ± 9.5) times/min,PaO2 was lower:(71.7 ± 13.1) mmHg (1 mmHg =0.133 kPa) vs.(84.5 ± 13.2) mmHg,and there were statistical differences (P ＜ 0.05).The baPWV in mild-moderate group was (18.9 ± 4.2) m/s,and in sever group was (21.8 ± 3.6) m/s,and there was statistical difference (P ＜ 0.05).The hs-CRP in miid-moderate group was (6.62 ± 4.57) mg/L,and in sever group was (3.38 ± 2.13) mg/L,and there was statistical difference (P＜ 0.05).Conclusions The morbidity of peripheral arterial stiffness is increased in elderly patients with COPD.Progression of peripheral arterial stiffness is related to the severity of airway obstruction.