Background and Purpose:The objective of this study was to assess the value of tumor markers and clinical characteristics in making a differential diagnosis between mature cystic teratoma(MCT) and its malignant transformation(MT).Methods:176 patients with mature cystic teratoma of the ovary diagnosed by postoperative pathology were treated in our hospital between 1997 and December 2004,the authors studied their clinicopathologic data and tested several serum tumor markers.Results:170 were MCT,the mean age was 35.8,the mean tumor size was 8.8cm,153 were tested for CA125,the mean serum CA125 level was 33u/ml,37 with serum CA125 level over 35u/ml;140 for tested CA19-9,the mean serum CA19-9 level was 217u/ml,77 with serum CA19-9 level over 37u/ml;112 tested for SCC,the mean serum SCC level was 1.82ng/ml,29 with serum SCC level over 1.5ng/ml;115 tested for CEA,the mean serum CEA level was 1.42ng/ml,8 with serum CEA level over 5ng/ml;6 cases were malignant transformation,the mean age was 47,the mean tumor size was 17.6cm,the mean serum CA125 level was 500u/ml,5 with serum CA125 level over 35u/ml,the mean serum CA19-9 level was 609.8u/ml,5 with serum CA19-9 level over 37u/ml,the mean serum SCC level was 23.4ng/ml,5 with serum SCC level over 1.5ng/ml,the mean serum CEA level was 22.8ng/ml,4 with serum CEA level over 5ng/ml.There were significant differences in age,tumor size and levels of the serum tumor markers between MCT and MT.(P

Objective To study the protective effects of momordica saponins compounds on the kidney of type 2 diabetic mice. Methods The mouse model of type 2 diabetes was induced by feeding high￣fat diet for a week,followed by intraperitoneal injection of streptozotocin(STZ)at 150 mg.kg-1 .The mice were randomly divided into groups of normal control group(A), model control group ( B), rosiglitazone group ( C, 0. 4 mg . kg-1 ), the compounds at low￣dosage group ( D, 350 mg.kg-1 ) and high￣dosage group(E,700 mg.kg-1 ).The levels of fasting blood glucose,UCr,SCr,TGF￣β1 ,mALB,and HbAlc were determined respectively after being treated for 12 weeks. Results Compared with normal control group,the level of fasting blood glucose,SCr,TGF￣β1 ,mALB,and HbAlc in all other groups increased significantly (P<0.01);Compared with model control group,the level of fasting blood glucose,SCr,TGF￣β1 ,mALB and HbAlc in all treatment groups decreased significantly (P<0.01) ,the level of UCr increased markedly (P<0.01). Conclusion The Momordica saponins compounds can inhibit renal injury and exert kidney protective effect on type 2 diabetic mice.

The neurovascular unit (NVU) consists of neurons,gllal cells and microvessels,etc.There were complex interactions among the various cellular components,which form as a uniform entirety preferably.Anong the various cellular components of NVU,the signal transduction occurred disorders during cerebral ischemia,resulting in neuronal and extracellular ratrix destruction,and thus occurring cerebral infarction and hemorrhagic transformation.Therefore,the treatment of ischemic sttroke should be based on the protection of the overall function of NVU.This article describes the changes and protection of NVU after cerebral ischemia.

Objective This study aims to synthesize a novel gadolinium loaded nanoprobe targeted to vascular endothelial growth factor (VEGF) and assess its clinical value for imaging micro hepatic carcinoma.Methods A carrier was made by the biocompatible polymer material polylactic acid-polyethylene glycol-poly-L-lysinenanoparticles (PLA-PEG-PLLs).The targeted nanoprobe was obtained with anti-VEGF antibody and gadolinium (Gd) bonding to the surface of the carrier.MRI in vitro determined the T1 relaxivity of the nanoprobe.A live cancer model enhanced MR scan was performed by injecting targeted nanoprobes into the tail vein of grafted H22 tumor mice.The enhanced characteristics of the subcutaneous tumors and micro-heatic carcinoma were then reviewed.Results The particle size of the VEGF-targeted PLA-PEG-PLL gadolinium loaded nanoprobe was 85.8±7.2 nm with a zeta potential of 21.63±2.4 mV.The R1 relaxivity of the targeted nanoprobe was 18.394 mmol/s at 3.0 T when its gadolinium concentration was 8.0 μmol/ml.The enhanced MR scan using targeted probes showed that the big and micro-subcutaneous cancer exhibited a specifically delayed enhancement with an enhanced peak value at 2 or 3 hours,rather than the enhancement of the tumor using the nontargeted nanoparticles.Conclusion In conclusion,the VEGF targeted PLA-PEG-PLL gadolinium loaded nanoprobe was synthesized successfully,showed a high relaxivity,achieved targeted imaging of the micro-hepatic carcinoma,and exhibits a promising potential in the detection of this liver cancer.

Medical education should combine clinical professional skills with humanities skills,integrate humanities knowledge into vocational education.Taking 2008 grade seven-year program clinical medicine students in the 2nd affiliated hospital of Harbin Medical University as fostering object,we made researches into students' understanding of doctor-patient relationship before practice and their mastering of skills.Through conducting questionnaire,we got to know the effect of humanities practice skill training for seven-year program clinical medicine students.Meanwhile,we compared students' self evaluation results before and after training,discussed on how to improve medical students' communication skills,cultural skills and the reform direction in an aim to guide students to transit from students to clinical doctor.

Objective To study the effects of experimental varicocele on the apoptosis of spermatogenic cell in adolescent rats.Methods Experimental varicocele models were created by partial ligation of left renal vein in Sprague-Dawley(SD) male rats.The apoptosis of spermatogenic cells was detected by in situ terminal deoxylnucleotidyl transferase mediated-dUTP nick end labeling(TUNEL) technique.Results The incidence of apoptosis was increased significantly in experimental group than that in control group(P

Objective To study the influence of survivin targetedly inhibited with antisense oligonucleotide (ASODN)technique on the apoptosis of hepatoma carcinoma cells SMMC-7221,and to clarify the mechanism of promotion effect of survivin-ASODN on the apoptosis of SMMC-7721 cells.Methods The ASODN sequence of survivin marked by FAM fluorescein was designed and synthized. The SMMC-7721 cells were transfected by different concentrations (100,200,300,400,and 600 nmol· L-1 )of survivin-ASODN (ASODN transfection groups),at the same time blank control group and blank liposome control group and sense oligonucleotide (SODN) control group were set up.The apoptotic rates and the changes of cell cycle of the SMMC-7721 cells 24,48,and 72 h after transfected with different concentrations of survivin-ASODN were detected by FCM. The expression levels of survivin were measured by Western blotting method.Results Compared with each control group,24 h after transfection,the apoptotic rates of survivin-ASODN transfected SMMC-7221 cells were increased,the growth of cells was inhibited (P<0.05),and the effects had time-dose dependent tendency.48 h after transfection,the hypodiploid apoptotic peak appeared in ASODN transfection groups before G1 phase, the number of the cells at G0/G1 phase was decreased (P<0.05)and the number of the cells at G2/M phase wsa increased (P<0.05). Compared with each control group,the survivin expression levels in the SMMC-7721 cells in ASODN transfection groups were decreased (P<0.05 ), and the effects of survivin-ASODN was time-dose dependent (P<0.05 ). Conclusion Survivin-ASODN can block the expression of survivin in SMMC-7721 cells and inhibit the proliferation of SMMC-7721 cells by changing the cell cycle and increasing apoptosis in a time-dose dependent manner.

Objective To estimate the relationships between lipoprotein-associated phospholipase A2 (Lp-PLA2) activity and cerebral feeding artery athemsclemsis.Methods The blood samples were obtained from 148 atheroselerosis patients (atheroselerosis group) and 40 normal controls (control group).Activity of plasma Lp-PLA2 and traditional factors were determined.Logistic and regression model was adopted to analyze the roles of Lp-PLA2 and generally inflammatory risk factors in athemselemsis.Results Lp-PLA2 activity was significantly higher in atheroselerosis group than that in control group [(29.84±3.50)lesion number showed positive correlation with Lp-PLA2 (r=0.491,P＜0.01 and r=0.249,P=0.026).Adjusted other risk factors,Lp-PLA2 was an independent risk factor in cerebral feeding artery atherosclerosis.Conclusion Lp-PLA2,a novel inflammatory marker,is an independent risk factor of cerebral feeding artery atherosclerosis.

Purpose To investigate the serum prostate specific antigen( PSA)feature of high grade prostatic intraepithe1ia1 neop1asia ( HGPIN)patients,and the association of the number of cores positive for HGPIN on initia1 biopsy and the risk of cancer deve1opment in second biopsy. Methods 492 cases of patients with suspicious prostate cancer were schedu1ed for transrecta1 u1trasound prostatic biopsy with an 8-core temp1ate. In the first biopsy,186 cases of patients with PCa,34 cases of patients with iso1ated HGPIN( on1y one core invo1ved with HGPIN)and 13 cases of patients with extensive HGPIN( two or more cores invo1ved with HGPIN),64 cases of pa-tients with LGPIN,195 cases of patients with BPH. The va1ues of PSA were ana1yzed and compared within these groups. In patients with extensive HGPIN or iso1ated HGPIN we proposed a repeat 8-core biopsy after 6 months independent of serum PSA 1eve1. The same measure was app1ied for patients diagnosed as LGPIN or BPH in the first biopsy with accompanying increase or persistent e1evation of serum PSA 1eve1. The incidence of PCa was ana1yzed and compared within these groups. Results The serum PSA 1eve1s were no sig-nificant1y different between LGPIN and BPH(P>0. 05),between iso1ated HGPIN and LGPIN(P>0. 05),and between iso1ated HG-PIN and BPH(P>0. 05). The serum PSA 1eve1s were significant1y different between extensive HGPIN and LGPIN(P<0. 05),be-tween extensive HGPIN and BPH(P<0. 05),and between extensive HGPIN and iso1ated HGPIN(P<0. 05). In the second biopsy, the incidence of PCa in patients with extensive HGPIN was 38. 48%,that in patients with iso1ated HGPIN was 9. 68%,that in patients with LGPIN was 12. 50%,and that in patients with BPH was 12. 20%. Conclusions The features of PSA in patients with iso1ated HGPIN are simi1ar to BPH,PSA 1eve1 in patients with extensive HGPIN were between PCa and BPH,and patients with extensive HG-PIN have a higher incidence of PCa in second biopsy than iso1ated HGPIN and BPH.

Objective:To investigate the imaging manifestations and diagnosis of hepatic hereditary hemorrhagic telangiectasia (HHHT). Methods:The imaging features and clinical data of three HHHT patients were analysed and the related data were reviewed. B-type ultra-sonography, contrast enhanced CT and DSA were utilized to show the changes of the involved liver and the vessels. Results:B-type ultra-sonic graph showed abnormal blood vessels in hepatic hila. CT or DSA demonstrated intra-and extra-hepatic abnormal ectatic arteries, intrahepatic telangiectasia, cirrhosis and hepatic enlargement. Conclusion:CT might be used as one of the key measures for the diagnosis of HHHT.