Objective:To explore the expression of Netrin-1 protein in human renal clear cell carcinoma (RCCC) and the relationships between Netrin-1, pathology and prognosis. Methods:72 cases of RCCC admitted in our hospital from 2008 June to 2009 June and their adjacent tissues were selected for study. They included 30 cases in stage I-II, 42 cases in stageⅢ-IV;9 cases in grade I, 9 cases in grade II, 40 cases in gradeⅢand 14 cases in grade IV. All cases were followed up for more than 5 years. Survival analysis lines were made by Kaplan—Meier method and the difference between groups was tested by the Log-rank test. The expression of Netrin-1 protein was detected by immunohistochemistry staining and its clinical significance was analyzed. Results:Renal clear cell carcinoma:51 cases in high expression of Netrin-1 and 21 cases in low expression, normal tissues: 12 cases in high expression of Netrin-1 and 60 cases in low expression, the difference between the two groups is significant (χ2=42.921, P<0.01). The difference of the expression of Netrin-1in Fuhrman grade and AJCC clinical stage is significant (χ2=8.000,χ2=6.203;P<0.05). The 5-year survival rate in low protein expression group and in high protein expression group was 79%(17/21) and 62%(32/51). The survival curve had different trend, with no significant difference between groups (χ2=1.360, P=0.245). Conclusions: Netrin-1 protein plays an important role in the development of RCCC. It might be a new specific tumor marker of RCCC, and might become a new target in treatment of RCCC.

The association of serum adiponectin concentration with coronary heart disease (CHD) in Chinese Han population was evaluated. Present evidence demonstrated that the lowered serum adiponectin concentration was a susceptibility risk factor for CHD, while the precise relationship between serum adiponectin concentration and CHD in Chinese population requires further study.

BACKGROUND: Stem cells, cells with special function in animals and humans, exist in various tissues. Most of stem cells differentiate into special tissue organs and some of them remain in the status of stem cells for tissue repair. Mesenchymal stem cells were transplanted to burn wounds in some researches for inducing the proliferation and activation of skin stem cells so as to cure burn.OBJECTIVE: To observe the effect of stem cell culture medium cultured in vitro instilled locally into the severely traumatic skin in guinea pigs on healing time and healing degree of the wound.DESIGN: Random grouping and blank control trial.SETTING: Department of Toxicology, School of Public Health, Jilin University.MATERIALS: Totally 14 adult healthy guinea pigs of either gender weighing 300 to 350 g were recruited.METHODS: The experiment was conducted in the Laboratory of Toxicology Department, School of Public Health, Jilin University, from March to September 2003. Ten guinea pigs were put to death by bloodletting on the neck. The bone marrow was extracted and cultured in unicellular supematant fluid for use. The 14 guinea pigs were made into models of bilateral severe skin trauma.Ten of the guinea pigs were chosen randomly, stem cell culture was instilled into one side of the animals (stem cell group), while the culture medium was instilled into the other side of the animals (culture medium group). The remaining 4 guinea pigs that received no treatment were blank control group.Three days later, transparent lucite was put on the wound every other day for drawing the shape and observing the wound. After the shape was copied onto the transparent lucite, the wound area was worked out on the rectangular coordinate paper and the speed of wound healing was calculated.MAIN OUTCOME MEASURES: Gross observation was performed on the healing status of the wound and average healing time and speed of the guinea pigs in each group.wound healing status of the guinea pigs in each group: At day 3, the wound in stem cell group was dry without obvious exudation. There was a layer of membrane at the bottom of the wound and it stuck to the pledget closely so that the dressing could not easily be removed. The wound status in the culture medium was practically the same as that of the stem cells, but no membrane-ike material was formed and the dressing was easily removed. Inflammation appeared obviously in blank control group.nificantly less in stem cell group than in culture medium group and blank control group [(12.45±2.18) days vs (26.29±1.38) days and ＞ 30It was obviously faster in stem cell group than in culture medium group and blank control group [(40.42±2.14) mm2 per day vs (15.53±5.22) mm2 per day and(10.27±4.57) mm2 per day,P ＜ 0.05].CONCLUSION: The stem cells of homologous animals were instilled on the skin surface to repair injury wound. Stem cells can grow on the wound and transform into skin cells, which promotes the recovery of wounded skin. Therefore, it is feasible to treat severe skin defect with stem cells.

Objective　To evaluate the effects of meglumine diatrizoate mucilage (MDC) used as contrast medium in bronchography. Methods A total of 500 patients undergoing bronchography were reviewed, including male 346, female 154, with an average age of 42 (ranged 5～71). Among them, 415 were examined with bilateral bronchography in a dose of 20～30 ml, 85 with unilateral bronchography in 10～15 ml of MDC. Results　In 487 cases (97.4%), the lobes, segments, subsegment bronchi were revealed very well, and 456 cases (91.2%) had no cough. Conclusion　MDC is regarded as an ideal bronchial contrast medium, and may replace dionosil and iodized oil.

Objective To determine the relationship between blood biochemical metabolites and benign prostatic hyperplasia (BPH).Methods From Jan.2008 to Oct.2010,the medical records of 73 BPH patients diagnosed by postoperative histopathology were retrospectively studied.The age of patients ranged from 55 to 86 years.The average patient age was 70 years.Of the 73 cases,65 cases were not taking medications which could have an impact on metabolic levels of serum glucose and lipoprotein.Three months prior to operation,the patients were placed in a group to analyze the correlation between the total volume of the prostate (TP),prostate average annual growth rate and biochemical metabolites including serum glucose,high-density lipoprotein cholesterol (HDL-c) and prostate specific antigen (PSA).To compare the changes of prostate volume,prostate annual growth rate and PSA,the 73 cases were divided into two groups; patients with metabolic syndrome (MS) and those without MS.Results Of the 65 BPH patients,the mean of TP and prostate annual growth rate were (58.76 ± 25.96) ml and (1.32 ± 0.89) ml,serum glucose was (4.99 ± 0.73) mmol/L,HDL-c was (1.36 ± 0.39) mmol/L,and PSA was (5.99 ±8.30) μg/L.Stratified with prostate volume,patient's serum glucose,prostate annual growth rate and PSA levels increased with the increased TP (F =4.63,P =0.0060; F =62.98,P =0.0001 ; F =4.83,P =0.0044).On the other hand.HDL-c decreased with the increased TP (F =5.32,P =0.0025).There was a positive relationship between TP and serum glucose (r =0.48,P =0.0005).There was a negative correlation between TP and HDL-c (r =-0.26,P =0.0353).Of the 73 patients,20 cases had MS.The MS group had PSA levels (6.52 ± 5.28) μg/L,TP (79.41 ± 38.24) ml and prostate annual growth rate (1.86 ± 1.14) ml.These levels were higher than the 53 cases without MS.The group without MS had PSA levels (3.95 ± 3.77) μg/L,TP (54.98 ± 20.94) ml and prostate annual growth rate (1.23 ± 0.80) ml (t=2.29,P=0.0253; t=2.65,P=0.0147; t=2.22,P=0.0360).Conclusions PSAlevels,TP and prostate annual growth rate in BPH patients are related with blood biochemical metabolites.Both serum glucose and HDL-c affect prostate volume.BPH patients with MS have a remarkable clinical progression.

Objective To investigate the changes in tumor necrosis factor-alpha ( TNF-a) and interleukin-8 (IL-8) mRNA in skeletal muscle during open heart surgery with cardiopulmonary bypass (CPB) . Methods Ten patients (4 male, 6 female) aged 35-62 yr undergoing valve replacement under CPB were enrolled in this study. Anesthesia was induced with midazolam, fentanyl and pancuronium and maintained with isoflurane-fentanyl and pancuronium. A specimen of rectus muscle of abdomen (2g) was taken while chest was being opened (baseline) and closed. Blood samples were obtained before anesthesia (T0), while chest was being opened (T1), 15 min after initiation of CPB (T2), 5 min after aortic unclampmg (T3) and while chest was being closed (T4) for determination of plasma TNF-a and IL-8 level using enzyme-linked immunosorbent assay technique. Results TNF-a and IL-8 mRNA expression in skeletal muscle were significantly increased while chest was being closed as compared with the baseline ( P

Objective To investigate the optimal time points for transplantation with in vitro cultured dopaminergic neurons as a potential treatment of Parkinson’s disease. Methods After the ventral mesencephalic precursors from E11 rat embryos were expanded for 7 days in vitro, they were harvested respectively from day 0 to day 7 in the period of induced differentiation. Then the cells were seeded again and cultured for another 7 days. The final survival of dopaminergic neurons determined the optimal time points for moving cells in vitro and, possibly, for transplantation in vivo. Result The survival rate of dopaminergic neurons moved on day 0 and day 1 in the period of induced differentiation was significantly higher than that at other time points. Conclusion The optimal time points for transplantation are found possibly to be day 0 and day 1 in the period of differentiation after the expansion of ventral mesencephalic precursors from E11 rat embryos.

Objective To develop health supervision information system. Methods The operation needs for health supervision department are analyzed; the object-oriented method is used to build the structure based on C/S mode, the client software is programmed by Delphi languages and Oracle is adopted as the database for its server. Results The functions of the health supervision system are realized including permission, inspection, punishment, statistical analysis and instruments print and so on. Conclusion The information system can be fulfilled the business needs of the health supervision department and enhanced inspection efficiency.

Objective To analyze the characteristics of rhabdomyolysis (RM) caused by alcohol withdrawal syndrome (AWS). Methods The clinical data of 7 patients with RM induced by AWS were analyzed retrospectively. Results All 7 patients were male;the age was 38-63 (51.3 ± 9.8) years. All of the 7 patients showed obvious myalgia and fatigue, of whom 4 patients had limb swelling, and 3 patients had epigastric pain. Creatine kinase and myoglobin levels of 7 cases were significantly increased. One case had acute renal failure. Seven patients were improved after treatment with a large amount of fluid infusion. Conclusions For patients with AWS who have generalized withdrawal seizures and epileptic seizures, muscle cells can be damaged due to prolonged muscle contraction, which can cause RM. Changes of myoglobin, creatine kinase, renal function and liver function in patients with AWS should be monitored at clinical admissions. If RM occurs, the patients should be given early fluid therapy.

Objective: To examine the effect of lifestyle behaviors on myopia among primary and middle school students in Yinzhou District, Ningbo City using latent class analysis, so as to provide insights into prevention of myopia among primary and middle school students. Methods: A total of 1 547 students were sampled from primary and middle schools in Yinzhou District using a stratified cluster sampling method. Myopia-associated lifestyle behaviors were collected using questionnaires, and visual acuity was tested. Myopia-associated lifestyle behaviors were subjected to latent class analysis among primary and middle school students, and the association between lifestyle behaviors and risk of myopia was examined using a logistic regression model. Results: A total of 1 547 questionnaires were allocated, and 1 494 valid questionnaires were recovered, with an effective recovery rate of 96.57%. There were 247 primary school students (16.53%), 452 junior high school students (30.25%), 532 senior high school students (35.61%) and 263 vocational high school students (17.60%), and 773 men (51.74%) and 721 women (48.26%). Latent class analysis showed that students' lifestyle behaviors were classified into three groups, including the healthy behavior group (37.68%), reading and writing fatigue group (42.64%), and video fatigue and poor diet group (19.68%), with myopia prevalence of 79.22%, 88.38% and 86.73%, respectively. Moderate myopia was predominant in the reading and writing fatigue group and video fatigue and poor diet group, and low myopia was predominant in the healthy behavior group. A higher risk of myopia was found in the reading and writing fatigue group (OR=1.996, 95%CI: 1.454-2.739) and video fatigue and poor diet group (OR=1.715, 95%CI: 1.157-2.543) than in the healthy behavior group. Conclusions Long reading and writing duration, insufficient exercise and sleep, long video watching duration, and high intake frequency of sugary drinks and fried foods may increase the risk of myopia in primary and middle school students in Yinzhou District. Targeted myopia interventions are required tailored to different categories of lifestyle behaviors.