Objective To explore the role of Kupffer cell-expressed Fas ligand(FasL) on acute pancreatitis(AP),and the protective effect of gadolinium chloride(GdCl3),a Kupffer cell inhibitor,on liver injury during AP.Methods Fifty-four ICR mice were randomly assigned into three groups: healthy control group(n=6);AP group(four time points for observation,6 mice each);Gd+AP group(GdCl3 pretreatment group,four time points for observation,6 mice each).AP was induced in mice using cerulein.Liver parenchymal enzymes(AST,ALT and LDH) and amylase(AMY) were assayed using an automatic analyzer.Serum FasL was assayed with ELISA and FasL protein expression in liver was assayed by Western blotting.Results After induction of AP in mice,the serum levels of AST,ALT,LDH,AMY and liver FasL expression were significantly elevated.Serum FasL levels at 4,8,16 and 24h after AP induction were 505.94?36.21,496.60?33.65,476.64?22.66 and 450.75?38.21,respectively,which were significantly higher than those in healthy control group(83.60?7.75,P

Objective To evaluate the effect of reference mAs on radiation dose and image quality characteristics of chest CT scanned with CARE kV technique compared with CARE Dose4D.Methods According to the date of examination,158 consecutive patients were selected in our department and randomly divided into 5 groups:CARE Dose4D group (30 cases,group 1); using CARE kV technology,reference mAs were 110 (32 cases),90 (31 cases),70 (33 cases),50 (32 cases),which were recorded asthe group from 2 to 5,respectively.Volume CT dose index (CTDIvol),dose length product (DLP) and the effective dose (ED) were analyzed.CT value and objective image noise were measured in the lungparenchyma and descending aorta.Two radiologists assessed the images for subjective noise,artefacts and diagnostic acceptability.The radiation dose,CT value and objective noise were compared with the analysis of variance,and the difference between two groups was compared with SNK test; the rank sum tests (Kruskal-Wallis) were used in subjective image quality score,and difference between two groups was compared with K-W test.Results The CTDIvol,DLP,ED values in five groups were (7.7±1.7),(7.7±2.0),(5.5±1.4),(4.2±1.5),(2.8±1.2)mGy,(290.7±67.4),(290.1±85.2),(194.2±52.1),(150.7±63.8),(96.5±38.9) mGy· cm,(4.1±0.9),(4.1±1.2),(2.7±0.7),(2.1 ± 0.9),(1.3±0.5) mSv,respectively.There were significant difference among the 5 groups(F=59.305,57.76,57.76,P＜0.01).With the decrease of the reference mAs,the radiation dose decreased significantly.There were no significant difference among the 5 groups on the average CT values of lung parenchyma and descending aorta(F=0.353,0.102,P＞0.05).The objective noise of 5 groups in pulmonary parenchyma and the descending aorta were (48.7 ± 9.1),(49.2 ± 10.0),(55.5± 11.2),(56.5± 8.3),(63.7 ± 13.2) HU; (9.2± 1.6),(9.5 ± 2.1),(10.7 ± 2.6),(11.6 ± 2.7),(13.6 ± 2.6) HU respectively,and the difference was significant(F=10.774,17.157,P＜0.01).Level assessment onsubjective noise of five groups by radiological expertsalso showed the significant difference (U=33.967,P＜0.01),butthe evaluation on motion,streak,blotchy pixellatedartefacts and diagnostic acceptability had no statistical difference (U=8.847,2.054,6.186,5.296,P＞0.05).Conclusion Comparedwith CARE Dose4D,the use of CARE kV technique of suitable reference mAs for unenhanced chest CT can reduce radiation dose significantly with diagnostically acceptable image quality.

OBJECTIVE:To compare the difference of the information about smoking affecting pharmacodynamics and pharma-cokinetics in prescription drug instructions between US and China. METHODS:The US and Chinese guidance for drug R&D and drug instructions editing,prescription drug instructions were collected;the information about smoking affecting pharmacodynamics and pharmacokinetics were retrieved from FDA drug instruction official website DailyMed and Yaozhi Network in China up to Jun. 19th,2014. The difference in related regulations and drug instruction were compared between US and China. RESULTS & CON-CLUSIONS:The guidance issued by US and China require that great importance should be attached to the effects of smoking on pharmacodynamics and pharmacokinetics,and it must be noted in drug instructions. Of 62 857 drugs recorded,smoking affected pharmacodynamics and pharmcokinetics of 34 drugs in US drug instructions,among which 9 drugs needed dose modifications;for above drugs,Chinese drug instructions pointed out great importance should be attached to the effect of smoking on pharmacodynam-ics and pharmacokinetics of 6 drugs,and only one drug(erlotinid hydrochloride)needed to be modified. The label rate of smoking affecting pharmacodynamics and pharmacokinetics was relatively low in Chinese drug instructions compared to US. It is suggested that the regulatory agent should standardize and improve related description in drug instruction,correct unsuitable content,revise the items which may result in severe consequence,and set up official website which can provide all drug instructions as soon as possible. Drug manufacturers should standardize clinical study of drugs before marketing,focus on the scientificity,completeness and normalization of drug instructions.

Objective To investigate the effect of fluvastatin sodium on the risk factors of atherosclerosis in patients with previous coronary heart disease.Methods 58 cases meeting the inclusion criteria and diagnosed coronary heart disease history of chlamydial infection were selected and randomly divided into study group and control group, 29 cases in each group, the control group were given routine treatment, study group on the basis of conventional treatment of fluvastatin sodium(20 mg pertime, once daily) treatment.A total of 4 weeks treatment for a course, the blood lipid and vascular endothelial function, matrix metalloproteinases and inflammatory factor levels were determined before and after treatment, and adverse reactions were recorded between the two groups.Results Compared with the control group, the total cholesterol ( TC ) , triglyceride ( TG ) , low density lipoprotein cholesterol(LDL-C) and lipid comprehensive index(LCI) in study group after treatment were lower, the high density lipid-cholesterol(HDL-C) was higher, the soluble intercellular adhesion molecule-1(sI-CAM-1) and endothelin-1(ET-1) were lower, the NO was higher, matrix metalloproteinase-1 (MMP-1), MMP-9 and tissue inhibitor of metalloproteinase-1(TIMP-1) were lower, and tumor necrosis factor-α(TNF-α), interleukin 1 beta(IL-1β), high-sensitivity c-reactive protein( Hs-CRP ) and IL-6 were lower ( all P <0.05 ).All patients were followed up, only slight gastrointestinal adverse reaction, there was no significant difference in adverse reactions between the two groups.Conclusion The fluvastatin sodium can reduce the blood lipid, the level of matrix metalloproteinases, improve vascular endothelial function and inflammatory state, with high safety.

Objective To study the expression of bivalent DNA vaccine against Schistosoma japonicum in vitro/vivo and lasting time in vivo. Methods The bivalent DNA pVIVO2-SjFABP/Sj23 was transfected transiently into the human embryonic kidney cells of the line 293. RT-PCR was used to detect the expressions of SjFABP and Sj23 mRNA in the 293 cells. Indirect immunofluorescence antibody test(IFAT) was used to detect the expressions of SjFABP and Sj23 proteins. Twelve BALB/c mice were inoculated with pVIVO2-SjFABP/Sj23 via intramuscular injection. Two blood samples were collected from eye sockets and two mice were vivi-perfused each month. This work lasted for 6 months. IFAT was used to detect the expression of proteins in skeletal muscle. Western-blot was used to detect the serum IgG level. Results RT-PCR and IFAT showed the expressions of SjFABP and Sj23 in the HEK-293 cells. IFAT showed SjFABP/ Sj23 was present in vivo at least for 6 months. Special IgG was not detected by Western blot. Conclusions pVIVO2-SjFABP/Sj23, bivalent DNA vaccine, could express correctly in vitro/vivo, and lasts for 6 months at least in vivo.

Objective: To explore the growth inhibition and apoptosis-inducing effects of apigenin in human gastric cancer SGC-7901 cells. Method: MTT and flowcytometry were used to detect the growth inhibition and cell cycle distribution in apigenin-treated SGC-7901 cells respectively. DAPI fluorescence staining and DNA ladder assay were applied to study the pro-apoptosis effects of apigenin. The expression of apoptosis relative proteins, caspase-3 and Bcl-2, were analyzed by using Western blotting. Results: Apigenin treatment significantly inhibited the growth of human gastric cancer cell SGC-7901 and markedly caused their apoptosis following activation of caspase-3 and downregulation of Bcl-2 protein expression. Conclusion: The activation of caspase-3 and downregulation of apoptosis relative protein Bcl-2 expression were the possible mechanism of apigenin induced growth inhibition and apoptosis in SGC-7901 cells.

Objective To evaluate the mutagenicity of Schistosoma japonicum bivalent DNA vaccine.Methods The mutagenicity of Schistosoma japonicum bivalent DNA vaccine was studied by Ames test,micronucleus test and chromosome aberration test.Results On the conditions of actived and unactived,Schistosoma japonicum bivalent DNA vaccine did not lead obvious increase of colony units,and the result of the Ames test was negative.Compared with the control group,there were no significant differences in the treated groups on the frequency of micronucleus in PCE or chromosome aberration.Conclusion There is no mutagenicity of Schistosoma japonicum bivalent DNA vaccine.

Objective:To determine the risk factor for early stage atherosclerosis in elderly patients with impaired glucose tolerance(IGT).Methods:One hundred patients were divided into 2 groups,experimental group(IGT,n=50)and control group(NGT,n=50).Patients in both groups underwent high-frequency Doppler echocardiography to evaluate intima-media thickness(IMT)of carotid artery and flow-mediated diastolic function(FMD)of brachial artery,which was indicated by diastolic inner diameter changing rate(D %).The values were measured in both groups of including body height,body weight,waist line,hip line,blood pressure,fasting plasma glucose(FPG),two hours plasma glucose(2hPG),fasting insulin(FINS),triglyceride(TG),total cholesterol(TC),low density lipoprotein-cholesterol(LDL-C),high density lipoprotein-cbolesterel(HDL-C),high sensitive C-reactive protein(hs-CRP),nitrogen monoxidum(NO),body mass index(BMl),waist-to-hip ratios(WHR),and insulin resistance index with homeostasis model(HOMA-IR).The association between all of the parameters and IMT,and the risk factors for the carotid artery were analysed in IGT group.Results:The values of BMI,WHR,2hPG,TG,LDL-C,hs-CRP,FINS and IMT of carotid artery were significantly increased in IGT group compared with those of the NGT group.Conversely,NO,HOMA-IR and D% were significantly decreased in IGT group than those of NGT group(P ＜ 0.05 or P ＜ 0.01).There was positive correlation between carotid-IMT and the age,BMI,WHR,2hPG,TC,LDL-C,hs-CRP and HOMA-IR in IGT group(P ＜0.05 or P ＜ 0.01).Inversely,there was negative correlation between carotid-IMT with D% in IGT group(P ＜ 0.01).The risk factors for carotid-IMT were age,WHR,HOMA-IR and D%.Conclusion:Elderly patients with IGT have already had risk factors for early stage atherosclerosis,including age,concentric obesity,insulin resistance,and impaired endothelial function.

Objective: To investigate the effect of type-A character on endothelial function in the elderly. Methods:According to type-A character scale of Zhang Baiyuan, type-A character group and non-type-A character group were screened from the normal elderly, 60 eases for each respectively. Flow-mediated diastolic function of brachial artery was examined by high-frequency eehocardiography, which was reflected by diastolic inner diameter changing rate (D %). Other parameters included height, weight, body mass index (BMI), systolic and diastolic blood pressure (SBP and DBP), fasting blood glucose (FPG), triglyceride (TG), total cholesterol(TC), low-density lipoprotein-cholesterol (LDL-C), nitric oxide (NO), endothelin (ET)and angiotensin Ⅱ (AngⅡ). All of the parameters and the scores of type-A character were compared and analyzed between the two groups. ResultS:(1) The levels of SBP and DBP were significantly higher in type A character group than those of non-type A character group (P＜0.05). There were no significant differences in values of FPG, TC, TG and LDL-C between two groups (P＞0.05). (2) The values of D% and NO were significantly lower in type A character group than those of non-type-A character group (P＜0.05 ). The values of Ang Ⅱand ET were significantly higher in type-A character group than those of non-type-A group (P＜0.05 ). (3)Pearson correlation analysis indicated that the scores of type-A character were positively correlated with Ang Ⅱ, ET, SBP and DBP (P＜0.05, P＜0.01), but negatively correlated with D% and NO (P＜0.05). Multiple linear stepwise regression analysis showed that only Ang Ⅱwas an independent risk factor for type-A character. Conclusion:h was showed that the increased Ang Ⅱinduced by abnormal activation of reunin-angiotensin-aldosteerone system (RAAS)may be the main mechanism of endothelial dysfunction in the eldedy with type-A character.

Background and purpose:Breast cancer is one of the most common carcinoma among female patients with high mortalities. Drug-resistance is the major reason that leads to chemotherapy failure in clinical practice. MCF-7/ADR is a multi-drug resistant cell line that was established on the basis of breast cancer cell line MCF-7. This research aimed to investigate the anti-apoptotic effect of c-fos in resistant breast cancer cell MCF-7/ADR, and to compare with its sensitive counterpart MCF-7.Methods:Doxorubicin with various concentrations was used to treat MCF-7 as well as its MDR- counterpart MCF-7/ADR. The growth inhibitory rate of MCF-7 and MCF-7/ADR wasdetermined by MTT assay. Additionally, RT-PCR was used to test the expression of P-gp and c-fos mRNA in MCF-7 and MCF-7/ADR; The expression of c-fos mRNA was detected by RT-PCR after 3 μmol doxorubicin treatment;We further established cell lines that stably interfered with c-fos, named MCF-7/ADR/si-fos-8B, MCF-7/ADR/si-fos-3D. Flow cytometry and MTT assay were used to investigate the apoptosis rate and inhibitory rate in these above cells under the treatment of 5-FU, CDDP or γ-radiation. At last, RT-PCR and Western blot analysis were used to detect the expression of bax, bcl-2, puma, p53.Results:The expression of c-fos and P-gp (MDR-1) was up-regulated in MCF-7/ADR, compared with its sensitive counterpart MCF-7. Additionally, the resistant fold of MCF-7/ADR to doxorubicin was nearly 40; The expression of c-fos was gradually up-regulated after 3 μmol doxorubicin treatment; The sensitivity to drugs (5-FU and CDDP) was increased after c-fos interference while the apoptosis rate was also increased after 5-FU, CDDP and γ-radiation treatment. RT-PCR and Western blot analysis indicated that up-regulation ofbax,puma,p53 after c-fos interference while the expression of bcl-2 was down-regulated.Conclusion:c-fos may act as an anti-apoptotic protein in resistant breast cancer cell line MCF-7/ADR by regulating the expression of apoptosis related proteins, and may play a vital role in the formation of multi-drug resistance phenotype.