Depression is a difficult problem because of its unresolved etiology , complex pathogenic factors ,and unknown path-ogenesis in the field of neuroscience .In recent years,the research of the pathogenesis in depression had made important progress at home and abroad .This article elaborates the mainstream hypothesis of depression mechanism to broaden the understanding depression in the fields of neurobiochemical study , neuroendocrine and neural plasticity studies .

Objective To investigate the efficacy of TTC and FTC regimens as neoadjuvant chemotherapy in breast cancer. Methods Collecting clinical data of 325 patients received neoadjuvant chemotherapy with TIC and FTC regimens from June 2004 to April 2008, among them 138 patients received neoadjuvant chemotherapy with TTC regimen in one group, and 187 patients received neoadjuvant chemotherapy with CTF regimen in the other group. The expression of Topo Ⅱ a in specimen of 325 patients before neoadjuvant chemotherapy were detected by immunohistochemical method. Results Among the 325 cases of neoadjuvant chemotherapy, the overall response rate (RR) was 87.7 % in TIC arm and 67.4 % in FTC arm (P=0.000), but in the group of Topo Ⅱ a(+) Her-2(-), the overall response rate (RR) was 87.8 % in TTC arm and 79.4 % in FTC arm (P=0.266), and in the groups of Topo Ⅱ a(-), there was statistical significance; the pathologic complete response rate (pCR) was 13.7 % in TIC ann and 11.2 % in CTF ann (P=0.491). Conclusion TIC regimen is superior to FTC regimen in the response rate of neoadjuvant chemotherapy, but patients with negative expression of Topo Ⅱ a may get more benefits from 9eoadjuvant taxane and anthracycline chemotherapy.

Objective To examine the relationship between inflammatory response induced by cardiopulmonary bypass and postoperative cognitive dysfunction.Methods Twenty-five patients undergoing elective cardiac valve replacement under cardiopulmonary bypass were randomly divided into two groups:ulinastatin group(group U,n=13) and control group(group C,n=12).In group U,ulinastatin 12 000 U/kg Was given intravenously immediately after induction of anesthesia,6 000 U/kg ulinastatin Was added to the priming solution,and 6000 U/kg ulinastatin was given at 5 min before the aortic decamping.In group C,normal saline was given instead of ulinastatin.Venous blood samples were taken after induction of anesthesia,at the end of CPB,and 24 h after operation for determination of plasma IL-6 concentration and neutrophils NF-kB expression.The cognitive function of the patients was evaluated by Mini-Mental State Examination(MMSE) before and 3 d,7 d after operation.Results The concentraion of IL-6 and neutrophils NF-kB expression were lower in group U than in group C(P<0.05 or 0.01).There wag no significant difference in the incidence of postoperative cognitive dysfunction between group C and U.Conclusion Inflammatory response induced by cardiopulmonary bypass is not related to postoperative cognitive dysfunction.

Objective To explore the application of the ultraviolet spectrophotometry method in detecting colchicine poisoning serum to provide the basis for clinical diagnosis and treatment of colchicine poisoning.Methods 0.5 mL of serum was taken and added with the extract solution(chloroform∶methanol=95 ∶5)4.0 mL.The sufficient oscillation extraction and high-speed cen-trifugation were performed.Then the organic layer was taken into another test tube for drying by nitrogen.0.2 mL of methanol dis-solved residue was taken and blended.50 μL of the mixed solution was taken for conducting ultraviolet scanning.Results The max-imum absorption peak of serum colchicine was (351 ±1)nm,the concentration within 5.0-40 μg/mL showed linearity,the regres-sion equation wasY =0.050 2X +0.001 3,the correlation coefficient was 0.999 5,the recovery rate was 83.8% -102.8%,the rel-ative standard deviation:3.3% -4.8%.The intra-day and inter-day were 3.22%-4.74% and 3.45%-4.66%,the lowest detec-tion concentration was 1 .0 μg/mL.Conclusion This method is simple to operate,fast in analysis,accurate in the detection result, which provides a simple and accurate detection method for clinical diagnosis of colchicine poisoning.

AIM:To study the effect of mistletoe lectins on cell proliferation and apoptosis in HT-29 human colon cancer cell.METHODS:The effect of mistletoe lectins on cell viability in HT-29 cell was evaluated by MTT assay.Cell apoptosis was observed by DNA ladder analysis and Tunel.RESULTS:Mistletoe lectins(eg.,1-4 mg/L) inhibited cell growth in a dose and time dependent way in HT-29 cells.HT-29 cells apoptosis can be induced when exposed to mistletoe lectins(eg.,1-4 mg/L).CONCLUSION:Mistletoe lectins can inhibits proliferation and induces apoptosis in HT-29 cells in vitro.

Objective To analyze the effect of total parenteral nutrition (TPN) and enteral nutrition (EN) in patients with acute pancreatitis. Methods Randomized controlled trials of TPN and EN in patients with acute pancreatitis were searched in Medline and China Biological Medicine Disk from Jan 1966 to June 2004. Eight studies were enrolled into the analysis. The detail about the trial design, characters of the subjects, results of the studies were reviewed by two independent authors and analysed by using Revman 4.2 software. Results Compared with TPN, EN was associated with a significantly lower incidence of secondary infections (RR 0.45, 95% CI 0.29-0.68, P=0.0002) and other complications(RR 0.67, 95% CI 0.47-0.96, P=0.03), fewer surgical interventions (RR 0.47, 95%CI 0.24-0.94, P=0.03) and shorter hospitalization. However, there was no significant difference in mortality (RR 0.61, 95%CI 0.32-1.18, P=0.14) between patients with TPN and EN. Conclusion EN could be the preferred nutrition feeding method in patients with acute pancreatitis.

Objective To understand whether it had differences in bile culture and drug susceptibility test between patients with community-acquired acute cholecystitis and patients with community-acquired acute cholangitis at present.Methods 169 patients with community-acquired acute cholecystitis and the 97 patients with community-acquired acute cholangitis in our department were selected prospectively,in which 16 patients suffered from both community-acquired acute cholecystitis and community-acquired acute cholangitis.Bile sample was extracted in operations and delivered to perform aerobic culture and drug sensitivity test.The bile samples coming from cholecyst were divided into group A,while the bile samples coming from bile duct were divided into group B.Results The positive rates of bile culture in group A and group B were separately 24.9% and 64.9%(P<0.05).The result of the sample coming from cholecyst and the result of the sample coming from bile duct were not the same in 4 patients of the 16 patients who suffered from both community-acquired acute cholecystitis and community-acquired acute cholangitis simultaneously.The main bacteria of acute cholecystitis included Escherichia coli(28.0%),Klebsiella pneumonia(24.0%)and Enterococcus faecium(16.0%).The main bacteria of acute cholangitis included Escherichia coli(39.7%),Klebsiella pneumonia(19.2%)and Enterobacter cloacae(12.3%).The antibiotics which were lowly resistant to gram negative bacteria in the two groups(A and B) included amikacin(0%/0%),ertapenem(0%/0%),imipenem(0%/7.0%)and piperacillin/tazobactam(0%/7.0%).The antibiotics which had lower resistant rates to gram positive bacteria in the two groups included tigecycline(0%/0%)and linezolid(0%/0%).The proportions of the multidrug-resistant strains in the two groups were separately 24.0% and 35.6%(P>0.05).Conclusion Some difference exist in the results of bile culture between patients with community-acquired acutecholecystitis and patients with community-acquired acute cholangitis,but the main bacteria of the both two types of biliary tract infection are Escherichia coli and Klebsiella pneumonia.The drug resistance is serious in the both infections,and the most sensitive antibiotics to gram negative bacteria include amikacin,ertapenem,imipenem,piperacillin/tazobactam,and the most sensitive antibiotics to gram positive bacteria include tigecycline,linezolid in the both infections.

Objective To observe the effects of Xianfu Wenyang Tongluo Drink (XFWYTLD) on ANCA associated antigen in rats with thromboangiitis obliterans;To discuss its mechanism. Methods Totally 72 SPF male Wistar rats were randomized into sham-operation group, model group, Mailuoning Granule group and XFWYTLD low, medium, and high dose groups. Method of femoral artery injecting sodium laurate was used to duplicate models. From the second day after modeling, the rats in sham-operation group and model group were fed with distilled water, while other groups received gavage with relevant medicine. 15 days later, the activity of MPO in serum was detected through the method of ultraviolet spectrophotometry;the protein expressions of PR3 and LAMP-2 in femoral artery and the surrounding tissues were detected through the method of immunohistochemisty. Results Compared with sham-operation group, the activity of MPO in serum and the protein expressions of PR3 and LAMP-2 in rats of model group were significantly higher;Compared with model group, the activity of MPO in serum and the protein expressions of PR3 and LAMP-2 in rats of all medication administration groups decreased, among which the XFWYTLD medium dose group showed the most obvious decrease. Conclusion XFWYTLD may lower levels of ANCA associated antigen, and further inhibit humoral immune function.

OBJECTIVE To study the current situation and problems of military blood emergency support and nosocomial infections,and find out countermeasures.METHODS The current situations and problems of military blood emergency support and nosocomial infections management system were analyzed,especially paying attentions to those parts including selecting blood donors,blood collection,storage,transport and distribution.RESULTS There were a lot of shortcomings existed in the blood infection factors control and management on blood emergency support;many measures should be taken to elovate the level of blood emergency,and reduce the risk of blood infection.CONCLUSIONS Improving and reforming the management system of blood emergency support in army,and maximatily reducing the risk of blood infection are important.

0.05). Levels of TGF-?1 and PDGF in microparticle platelet frozen powder were higher than those in fresh platelet(P