Objective To explore the relationship between serum reproductive hormone levels and premenopausal and postmenopausal breast cancer patients.Methods We recruited healthy women and breast cancer patients who came to our hospital from September 2007 to February 2012 for routine physical examination or surgery and divided them into premenopausal healthy group Ⅰ and breast cancer group Ⅰ ;Postmenopausal healthy group Ⅱ and breast cancer group Ⅱ,with 175 cases in each group.Reproductive hormone levels was measured in all cases.Results There were significant differences among the four groups on estradiol (E2),testosterone (T),progesterone (P),luteotropic hormone (LH),follicle-stimulating hormone (FSH),and prolactin (PRL) (F =76.459,57.224,82.932,161.047,74.801 and 15.246 respectively,P ＜ 0.05).In premenopausal cases:There were significant statistical difference on the levels of E2 [(61.5 ±32.2) ng/L vs.(74.1 ±41.6) ng/L],T [(48.1 ±22.2) μg/L vs.(80.1 ±41.8) μg/L],P [(2.9±1.6) μg/Lvs.(3.5 ±1.3) μg/L],LH [(1.3 ±0.9) U/L vs.(3.5 ±1.4) U/L],FSH [(14.8 ±8.9) U/L vs.(25.1 ±23.3) U/L],PRL [(15.8 ±6.7) μg/L vs.(39.4 ±27.4) μg/L] between the healthy Ⅰ group and the breast cancer Ⅰ group (P ＜ 0.05).In postmenopausal cases:There were significant statistical difference on the E2 [(18.8 ± 8.3) ng/L vs.(55.9±34.1) ng/L],T [(34.1 ±16.2) μg/L vs.(84.7 ±66.4) μg/L],P [(1.3 ±0.9) μg/L vs.(3.5 ±1.4) μg/L],LH [(38.1 ±33.7) U/L vs.(45.6 ± 31.2) U/L] in healthy group Ⅱand the breast cancer Ⅱ group (P ＜ 0.05).The difference was statistically significant on the E2 [(74.1 ± 41.6) ng/L vs.(55.9±34.1) ng/L],LH [(3.5 ±1.4) U/L vs.(45.6 ±31.2) U/L],FSH [(25.1 ±23.3) U/L vs.(70.5±58.2) U/L],PRL [(39.4 ±27.4) μg/L vs.(15.9 ±15.5) μg/L] between the breast group of premenopausal and postmenopausal (P ＜ 0.05).Conclusion Reproductive hormone levels has important clinical significance for the onset and development of breast cancer and provides a reference point for the treatment of menopausal and post-menopausal breast cancer.

Objective To study the relationship between interleukin(IL)-4,IL-12 and IL-18 and intrauterine infection of hepatitis B virus (HBV),in order to provide the basis for prevention and treatment.Methods Forty pregnant women with positive HBsAg and intrauterine infection of HBV were selected as study group,and 80 pregnant women with positive HBsAg and non-intrauterine infection of HBV were selected as control group.The levels of IL-4,IL-12,IL-18 were compared.Results The level of IL-4 was (51.56 ± 7.86) ng/L in study group,which was higher than that in control group [(31.67 ± 8.64) ng/L],and there was significant difference between two groups (P ＜0.01).The leveh ofIL-12 and IL-18 were (803.45 ± 132.64),(627.87 ± 134.38) ng/L in study group,which werelower than that in control group [(904.87 ± 231.86),(734.78 ± 165.67) ng/L],and there were significant differences between two groups (P ＜ 0.01).Conclusions The levels of IL-4,IL-12,IL-18 are correlated with intrauterine infection of HBV.The increase of IL-4 and the decrease of IL-18,IL-12 may lead to positive HBsAg pregnant women happening intrauterine HBV infection.

Objective To explore the effect of laparoscopic ovarian drilling technique in the treatment of polycystic ovarian syndrome.Methods 60 patients with polycystic ovarian syndrome were randomly devided into observation group( 30 cases) and the control group(30 cases).The effect of the two groups was observed.Results LH and T of all the patients were significantly improved after the treatments( t =27.2158,20.4752,9.7169,0.4551,all P ＜0.05);The ovulation rate and the pregnancy rate of observation group(86.7％ and 86.7％ ) was significantly higher than those of the control group( x2 =5.4545,9.3496,all P ＜ 0.05 ),and the OHSS rate of observation group was 0,significantly lower than that of the control group ( 16.7％ ) ( x2 =5.4545,P ＜ 0.05 ).Conclusion Laparoscopic ovarian drilling technique was effective and safe in treating polycystic ovarian syndrome.

Objective To compare clinical efficacy between improved vaginal hysterectomy (IVH)and traditional vaginal hysterectomy (TVH) and its influences on blood glucose and serum corticosteroid levels.Methods One hundred patients undergoing hysterectomy were divided into using IVH (treatment group,50 patients) and TVH (control group,50 patients).Clinical efficacy,blood glucose and serum corticosteroid levels were compared between two groups.Results There was no significant difference in operation time between two groups (P＞ 0.05).The amount of intraoperative bleeding,postoperative exhaust time and postoperative vaginal bleeding time in treatment group were significantly less than those in control group [(86.7 ± 5.7) ml vs.(131.2 ± 14.5) ml,(24.8 ± 12.9) h vs.(42.8 ± 17.7) h,(16.5 ± 2.9) d vs.(24.3 ±6.7) d,P ＜ 0.05],and the time of blood glucose and serum corticosteroid levels returned to normal levels in treatment group were much earlier than those in control group.Conclusion The clinical efficacy of IVH is preonunced,and postoperative stress reaction is mild.

Objective To investigate the protective effects and mechanisms of NF-KB inhibitor pyrrolidine dithiocarbamate (PDTC) on infant rabbits with lung injury caused by mechanical ventilation. Methods Twenty healthy infant rabbits were randomly divided into four groups. (1) Mechanical ventilation (MV, with VT = 24 ml/kg);(2) Mechanical ventilation plus PDTC pre-treatment (MVP, VT = 24 ml/kg with PDTC 100 mg/kg injection via ear vein half an hour prior to MV) ; (3) Mechanical ventilation combined with endotoxin (EMV, 0.1 ml/kg of endotoxin dripping into trachea then on MV, VT = 24 ml/kg) ; (4) EMV plus PDTC pretreatment (EMVP, PDTC 100 mg/kg injection via ear vein followed by 0.1 mg/kg of endotoxin dripping into trachea in half an hour then on MV with VT = 24 ml/kg for 4 h continuously. MPO and the activation of NF-κB in lung tissues and the genetic expression and protein quantity of TNF-α and IL-8 in homogenate were measured. The pathological changes in lung tissues were examined. Results Pre-treatment with PDTC had significant minor pathological changes caused by MV and MV plus endotoxin, which were indicated by the fact that MPO, activation of NF-KB and the genetic expression and protein quantity of TNF-α and IL-8 were significantly suppressed. Conclusions PDTC could decrease the expression, synthesis and release of pro-inflammatory cytokines. This may be through suppressing the activation of NF-κB resulting in less infiltration with inflammatory cells and protective effects on lung injury caused by MV and MV plus endotoxin.

Objective To expore the mechanism of low-dose interfone-γ(IFN-γ) influences on differentiation of oligodendrocyte precursor cell. Methods The cerebral cortex samples were obtained from one day old SD rats to form mixed single cell suspensions. After culturing in full medium for 7 to 10 days, succession and differential velocity adherent technique were performed to acquire oligodendrocyte precursor cell and cultured in serum-free medium. IFN-γ, AG490 and Fludarabine were added during the culture of oligodendrocyte precursor cell and reverse transcription-polymerase chain reaction, Western blot and flow cytometry were performed to evaluate the expression of intracellular P27kip1 and its influence on the differentiation of oligodendrocyte precursor cell. Results (1)The expression of P27kip1 mRNA and protein was lower in IFN-γ group than in control group (t=85. 535, P<0. 05;t= 12. 481, P<0. 05), while the expression of P27kip1 mRNA and protein in IFN-γ+AG490 group and IFN-γ+Fludarabine group were both higher than those in IFN-γ group (P<0. 05). (2) The phosphorylation levels of JAK2/STAT1 in INF-γ group were higher than that in the other three groups (P<0. 05). (3) The percentage of myelin basic protein positive cells was (68. 42 ± 2. 53)% in IFN-γ group, lower than that in control group [(88.21 ± 1.97)%](t=10.682, P < 0.05). Myelin basic protein positive cells in IFN-γ + AG490 group were (57. 63 ±2. 75) %, lower than those in the IFN-γ group. The same figure in IFN-γ+Fludarabine group were (79. 53±4. 15)% , higher than those in IFN-γ group (t = 3.957, P<0.05). Conclusions Low-dose IFN-γ can regulate the expression of intracellular P27kip1 through JAK2/STAT1 signal transduction pathway and Fludarabine may participate in this process and improve the differentiation and maturation of oligodendrocyte precursor cell.

Objective To study the effect of simvastatin(SV) on NF-kappa B p65 expression in liver of insulin resistant rats. Methods Male Wistar rats were divided into two groups:basic chow(NC,n=15)or high-fat diet(HF,n=20)for 10 weeks feeding, then assessed by euglycemic-hyperinsulinemia clamp technique. Rats in HF group were treated with(HFS,n=5)and without (HFN,n=5) SV 10mgkg-1d-1 in gavage for 5 weeks.NF-kappa B p65 expressions were tested with Western blot. Results The glucose infusion rate (GIR) in HF group decreased significantly compared with NC group (P

Purpose To investigate the expression of Netrin-1 in ovarian serous carcinoma and its c1inicopatho1ogica1 significance. Methods Netrin-1 protein expression was assessed by immunohistochemica1 method in tissue specimens from 20 cases of benign ovari-an serous cystadenomas,13 cases of border1ine ovarian serous neop1asms and 32 cases of ovarian serous carcinomas( OSC). Results The positive proportion of Netrin-1 protein in OSC tissues was significant1y higher than those in border1ine and benign ovarian serous ne-op1asms(P<0. 01). The expression of Netrin-1 in OSC tissues was associated with tumor grade and c1inica1 stage(P<0. 05),but not associated with age,site,tumor size or 1ymph node metastasis( P>0. 05). Kap1an-Meier ana1ysis showed that the 5-year surviva1 rate of patients with Netrin-1 over-expression was significant1y 1ower than that of patients with 1ower expression( P<0. 05 ). Conclu-sions The high expression of Netrin-1 in OSC tissues indicates that Netrin-1 p1ays an important ro1e in cancer pathogenesis and deve1-opment and it may be a new assistant marker for prognosis of OSC.

Objective: The pathology workflow statistics, modeling, optimize procedure and establish standardized operating procedures. Methods:This paper which based on the previous studies, the standard operation management and database technology, based on pathology workflow sample collection, sample inspection, warehousing storage, picking or sorting, sample processing and handling, inspection, quality control and other aspects of the analysis, optimizing operating procedures, thus forming SOPs, and accordingly the establishment of standardized management database system. Results: The system shortens the pathological examination cycle, improve the detection efficiency. Conclusion: It can be widely used in pathology sample collection, diagnosis, management processes, and application for sound management system pathology, pathology strengthen quality control is important.

The teaching of clinical probation is the main link in the course of training medical talents. In the past fewyears the teaching of clinical probation bears much heavier pressure with the health care reform, some new unveiledpolicies and laws, and the growth of student intake scale of clinical medicine. To better carry out the clinical teaching,this article systematically analyzes many relevant factors that influence the clinical teaching. At the same time thearticle also makes research and discussion in relation to the following aspects:the clinical teaching reform,establishingthe teaching system on standardized patients,setting up simulation center for clinical skill training and implementing thesystem of Bachelor-to-Master program and Master-to-Doctorate program.[