Objective Here we intend to find out activity of EC-PAOA on the proliferation of normal endometrial and eutopic endometrial cells in vitro.Methods Normal human endometrium and eutopic human endometriosis were used,stromal and epihelisl cells were separated by selective enzymatic digestion method,Cells types and purities of cells were identified through immunohistochemistry result;The isolated cells were primarily cultured,while the other pat cultured with different concentrations of EC-PAOA(10,100,1000ug/ml ) for 24,48 and 72h,The effect of cultured cells from nomal endometrium and eutopic endometriosis were observed by MTT assay.Results EC-PAOA was observed no effect on normal endometrium, in the contrast, EC-PAOA was found to anti proliferation of eutopic endometrial cells and was most notable to anti proliferation of eutopic endometrial cells(P

Objective To explore the protective effects of Quercetin on hypoxic ischemic brain damage (HIBD). Methods Forty-eight 7-day-old SD rats were randomly divided into sham-operation group, HIBD group and Que treatment group, 16 rats each. HIBD group and Que treatment group were treated by ligation of right common carotid artery to make anoxia and build HIBD model; sham-operation group had the separation of the right common carotid artery only. Que treatment group were injected intraperitoneally with quercetin (40 mg/kg) once a day for 7 days immediately after modeling while sham-operation group and HIBD group received equivalent normal saline at the same time. The rats in each group were scored of neurological function at 1 h after the last administration, and the ability of spatial learning-memory was tested by Morris water maze at the age of 28 days. After performing the test above, all rats were decapitated and the brains were taken. Pathological changes of hippocampus were observed by HE staining; the expression of brain-derived neurotrophic factor (BDNF) and nerve growth associated protein (GAP-43) in hippocampus CA1 area were detected by immunohistochemistry. Results There were significant differences in neurological deficit score and learning-memory ability among the three groups (P<0.01), and neurological deficit score was the highest and the learning-memory ability was the lowest in HIBD group. Pathological examination showed that the structure of hippocampal neurons was intact in sham-operation group. It was loose and disorder, and even loss of neurons in HIBD group. Compared with the HIBD group, the loose in the structure of hippocampal was lighter, and the number of neurons was increased in the Que treatment group. There was statistical difference in the positive expression of BDNF and GAP-43 in the hippocampal CA1 area among the three groups (P<0.01), with those in HIBD group being lower than in Que treatment group and sham-operation group and those in treatment group being lower than in sham-operation group (P<0.01). Conclusions Quercetin can enhance the expression of BDNF and GAP-43 in hippocampal CA1 region, promote nerve regeneration, improve the long-term learning-memory ability of HIBD neonatal rats, and protect the brain.

Objective To explore the effect of Quercetin on the long-term memory and PARP-1/AIF signal path in neonatal rats with hypoxic-ischemic brain damage (HIBD). Methods Fifty-six 7-day-old SD rats were randomly divided into sham-operation group, HIBD group, low dose of Quercetin group (20 mg/kg), and high dose of Quercetin group (40 mg/kg), each of 14 rats. Except for sham-operation group, in the other groups HIBD model were made by right common carotid artery ligation and anoxiate. The Quercetin groups were injected with the corresponding doses of Quercetin immediately once a day continuously for 7 days after the model was made,. Sham-operation group and HIBD group were intraperitoneally injected with normal saline at the same time. Neural function was evaluated by Hanging wire test and Vertical pole test at 21 days old. The capacity of learning and memory was detected by Morris water maze at 28 days old, and then rats were killed and brains were taken. HE was used to observe the pathological changes of hippocampus. Western blot were used to detect the expression of PARP-1 and AIF in hippocampus. Results Compared with sham-operation group, the neural function and learning and memory ability decreased significantly in HIBD group. Those ability in both low dose and high dose of Quercetin groups were remarkably increased in comparison with HIBD group, and there were statistic differences (P??0.05). Conclusion Quercetin could improve long-term learning memory in newborn rats with HIBD, and the mechanism may be down-regulation of PARP-1/AIF cell apoptosis signaling pathway, inhibition of neuronal apoptosis, and thus play a role in protection of brain.

Objective To compare the efficacy of video-assisted thoracoscopy plus minithoracotomy(VAMT) and limited axillary thoracotomy(LAT) for the treatment of lung cancer.Methods 85 consecutive lung cancer patients were treated by either VAMT or LAT.The operative time,blood loss during operation,postoperative chest drainage time,and hospital stay time and postoperative complication were compared between the two groups.Results There was no death in two groups.The operative time and blood loss during operation were significant less in VAMT than inLAT(t =6.514,2.413,all P ＜0.05).But postoperative chest drainage time,and hospital stay time and postoperative complication were no significant difference between the two groups (t =0.490,0.338,all P ＞ 0.05).Conclusion VAMT is a safe and less traumatic procedure in the treatment of lung cancer,which is worthy of promotion and application.

Objective To analyze the risk factors related to obesity of preschool children. Methods The physical activity and eating behavior of 120 obese children aged 1～6 years were investigated with questionnaire by case control 1:1 matched. Results Obesity group spent significantly longer time to watch TV than control group, but the time for physical activity, feeding pattern during the first 4 months, the time of initial supplementary foods and the sleeping duration were not different between both groups. Conditioned logistic regression of multi-variables showed that good appetite, fast eating, overeating of carbohydrate and meat , and snacks before breakfast were the risk factors of child obesity. Conclusion The bad eating behaviors and the lack of physical activity were related to obesity in preschool children.

Objective To study the epidemiological patterns of HIV infection prevalent in HongKong.Method The epidemiological patterns of HIV infection in HongKong were analyzed with a mathematic model SI by changing its initial condition,which was used to test the related data.Results The changeable patterns of susceptible accumulative numbers of HIV infection in HongKong and the epidemiological curves and the curve of infection velocity were obtained.Conclusion The epidemic pattern of HIV infection in Hongkong and local infection velocity from 1987 to 2004 were well described using the epidemic model SI.An accumulation of 2 733 cases of HIV infection will be predicted in the year of 2005.The epidemic peak occurred in 2002 to 2004 and the overall HIV epidemic will last for 50 years approximately.

Objective To observe the changes of CD+8CD+28,CD+8CD-28 and CD+4CDhigh25CDlow127 regulate T (Treg)cellsin peripheral blood of lung cancer patients,and to analyze the correlation between CD+8CD-28 and CD+4CDhigh25CDlow127 Treg cells to reveal the role and clinical significance of them in lung cancer patients.Methods Flow cytometry was applied to evaluate the level of CD+8CD+28,CD+8CD-28 and CD+4CDhigh25CDlow127 Treg cells in peripheral blood of 60 untreated lung cancer patients and 60 healthy controls group.The association of each term with clinical features was analyzed.Results The percentage of CD+8CD-28 and CD+4CDhigh25CDlow127 Treg cells in lung cancer group[(58.430:15.749) ％,(7.365±2.025) ％]was significantly higher than those in healthy group [(41.057±15.436)％,(6.648±1.669)％,(t=6.102,P＜0.05;t=2.115,P＜0.05)],while the percentage of CD+8CD+28cells is lower(41.570±15.739)％ than that in healthy group[(58.700±15.298)％,(t=-6.043,P＜0.05)].No close associations were found between three index and gender,age,and biological characteristics.With the increase of TNM stage,The percentage of CD+4CDhigh25 CDlow127 Treg cells increased gradually,which was remarkably higher in patients rith stage Ⅳ than that with stage ⅢA(t=-3.898,P＜0.05).The percentage of CD+4CDhigh25 CDlow127 Tregcells was uncorrelated with CD+8CD-28 cells(r=-0.169,P＞0.05).Conclusion The higher percentage of CD+8CD-28 and CD+4CDhigh25 CDlow127 Treg cells,the lower percentage of CD+8CD+28 cells may be the important reasons of immune suppression in lung cancer patients.Though there is no correlation between CD+8CD-28 and CD+4CDhigh25 CDlow127 Treg cells,it is may be helpful to understand immunologic function and it may look for more specific therapy and provide a new reference in the prognosis of lung cancer.

Objective To investigate the effect of aspirin on endothelin-1 induced proliferation of cardiac fibroblasts (CFs). Methods Isolated and cultured CFs from neonatal Sprague-Dawley rats (SD) were randomly divided into 7 groups: control, ET-1, aspirin, ET-1 +aspirin 1 mmol/L, ET-1 +aspirin 2 mmol/L, ET-1 +aspirin 5 mmol/L and ET-1 + aspirinl 10 mmol/L. CFs were counted by MTr assay. Cell cycle distribution was determined with a flow cy-tometer (FCM). [~3H]-Proline incorporation was evaluated by scintillation counting. Nitric oxide (NO) was meas-ured by colorimetry. Results 10~(-7)mol/L ET-1 significantly increased the number of CFs and [~3H]-Pro incorporation and decreased NO_2~-/NO_3~--secretion compared with the control group (P <0.01).1 ～ 10 mmol/L Aspirin inhibited the effects of ET-1 on CFs in a concentration-dependent manner (P <0.05 vs ET-1). In the ET-1 group, the percent-age of cells in the S phase was higher than that of the control, which was inhibited by 10 mmol/L Aspirin (P <0.01 vs ET-1 and control). Conclusion Aspirin can restrain the proliferation and collagen synthesis of cardiac fibroblasts induced by endothelin-1, and this effect may be partially mediated by NO.

Objective To explore the feasibility of inherent depressive Fawn-Hooded (FH/Wjd)rats as a comorbidity model of mental disorder and irritable bowel syndrome (IBS) by comparing visceral sensitivity of FH/Wjd rats and Sprague-Dawley (SD) rats. Methods Depression trait of FH/Wjd rats was validated through forced swimming test (FST) and sucrose preference test (SPT).Visceral sensitivity to colorectal distention (CRD) under various pressures was assessed by abdominal withdrawal reflex (AWR). The expression of 5-HT in rats' colon,c-fos expression in colon and brain areas of infralimbic cortex (IL),prelimbic cortex (PrL) and rostral anterior cingulated cortex (rACC)was tested with immunohistochemistry. Results FST indicated that the immobility time of FH/Wjd rats was significantly longer than that in SD rats (t=-8. 931,P＜0. 01). SPT showed that the ratio of sucrose water in total liquid consumed was significantly lower in FH/Wjd rats than that of SD rats(t=4. 155,P=0. 01). At each CRD pressure gradient (20,40,60 and 80 mm Hg,1 mm Hg=0. 133kPa),AWR score was all significantly higher in FH/Wjd rats than that of SD rats (t=-2. 697,-3.464,-6.822 and -3. 976,P=0. 022,0.006,0.000 and 0.003). The expression level of 5-HT in FH/Wjd rats' control group was significantly higher than that of SD rats' control group (t=-11.371,P=0. 000). Compared with their own control group,5-HT expression increased both in FH/Wjd rats dilated groups and SD rats dilated groups,and the expression level in FH/Wjd rats was higher than that of SD rats (t= -3. 364,P= 0. 007). There was no significant difference of c-fos expression in colon and prefrontal brain areas between FH/Wjd rats' control group and SD rats'control group (colon:t=-0. 129,P= 0. 900;IL:t=-1. 316,P= 0. 218;PrL:t=1. 241,P = 0. 243;rACC:t=2. 151,P = 0. 057). Compared with their own control group,the expression of c-fos in colon and prefrontal brain areas significantly increased both in FH/Wjd rats dilated groups and SD rats dilated groups,and the expression level in FH/Wjd rats was higher than that of SD rats (colon: t=- 5.864,P= 0.000;IL:t=-2. 530,P = 0. 030;PrL:t=-7. 039,P= 0. 000;rACC:t=-6. 489,P=0. 000). Conclusions Inherent depressive FH/Wjd rats present visceral hypersensitivity. Meanwhile,the expression of 5-HT in colon is high,and with hyperreactivity to visceral noxious stimuli in colon and brain IL,PrL,and rACC areas. FH/Wjd rats might be a comorbidity animal model of mental disorder and IBS.

Objective To investigate the spontaneous neoplastic lesions and their incidences in rats .Methods Sixty male and 60 female specific pathogen-free Wistar rats (4-weeks old ) were used in this study .The rats were acclima-ted for 1 week prior to initiation of the experiment .They were fed with conventional feed for 104 weeks and then sacrificed for histopathological examination .Results Various neoplastic lesions of the rats and their incidences were analyzed and reported.For male rats, their total tumor incidence was 49.12%, the benign tumor incidence was 38.60%and the malig-nant tumor incidence was 17.54%.The benign neoplastic lesions mainly were pituitary adenoma ( 19.30%) , testis Leydig cell tumor (5.26%) and subcutaneous fibroma (5.26%).The malignant neoplastic lesions mainly were squamous cell carcinoma (7.02%) and lymphoid hematopoietic system tumors (3.51%).For female rats, their total tumor inci-dence was 60.34%, the benign tumor incidence was 50.00%and the malignant tumor incidence was 15.52%.The benign neoplastic lesions mainly were breast fibroadenoma (25.86%) and pituitary adenoma (24.14%).The malignant neoplas-tic lesions mainly were adenocarcinoma (5.17%) and breast cancer (3.45%).Conclusions The spontaneous neoplastic lesions and their incidences reported in this paper provide another data of the spontaneous tumors of SPF Wistar rats and may provide some reference for relevant technical staffs .