Objective: To establish an enzyme linked immunosorbent assay(ELISA)for erythropoietin(EPO) in serum, and observe its clinical application value thereof. Methods: Prepare the EPO polyclonal antibody, wash the plate with isopropyl alcohol, and then choose the suitable concentration of the antibody, enzyme labeled antibody, and antigen. After the reaction, check the sensitivity, recovery, specificity and stability of the method. The serum samples of anaemia and breast carcinoma individuals were detected. The results of radioimmunodetection were compared with that of normal control group. Results: The immo-assay plate showed strong adherence to proteins. The optimal concentrations of the antibody, enzyme labelled antibody and antigen were 1∶1 000, 1∶6 000 and 1∶800 separately. The sensitivity was 0.46 U/L. The cross-reaction with growth hormone and ferritin was low. The mean recoveries of samples with high and low concentrations were 96.3%, 97.3% respectively. The coefficients of variation of intra-assay and inter-assay were just 8.31% and 7.82%, and the stability was good. The EPO levels were higher in anaemia and breast carcinoma groups than that of normal group. There was no significant difference between the results of the radioimmunodetection and ELISA. Conclusion: The double-antibody sandwich ELISA method was established for EPO in serum, which had certain clinical application value.

Objective To prepare a detective membrane strip for detection of food allergen-specific IgE in serum samples and estimate its clinical application value in allergic diseases. Methods The crude extracts of the food allergens were prepared. Nitrocellulose membrane as the solid support was selected and the coating and the detecting conditions were optimized. The membrane strips were used to detect serum samples in 210 patients with allergic diseases and the results were compared with German Allergy Screentesting system. Results The optima] experimental conditions were as follows: The NC membrane was adopted as the solid support. After being spotted, the food allergens were incubated for 2 hours at room temperature, followed by 2% PVA blocking for 1 hour. After serum samples were diluted (1: 10) and incubated for 2 hours at room temperature, the concentration of anti-human IgE was 2 μg/mL Compared with the German Allergy Screen-testing system, their positive detectical coincidence was 63.6%, and negative detectical coincidence was 94. 6%. The two methods had no difference in detecting the majority of food allergens such as egg white, milk, peanut, soybean, crab and shrimp (X2 2.53, 2.40, 2.08, 2.38, 0.17,1.13, P>0.05). Conclusions The advantages of our method for detecting allergic diseases are little serum needed, multiple detective allergens, simple manipulation and low cost. This method has obvious clinical application value, which should be a new detective method for the allergic diseases with broad perspectives.

[ABSTRACT]OBJECTIVETo investigate the expression levels of IL-25 and IL-33 mRNA in the nasal mucosa of allergic rhinitis(AR) mice.METHODSBalb/c mice were used for establishing the animal model of allergic rhinitis with oval bumin sensitization as AR group, at the same time, the physiological saline as the control group. IL-25 and IL-33 mRNA in nasal mucosa of the two groups were detected by real-time quantitative PCR.RESULTSThe expression of IL-25 and IL-33 mRNA could be detected in both the control and AR group. The expression level of IL-25 and IL-33 mRNA in AR group were significantly higher than that in control group, the difference was statistically significant (P<0.05).CONCLUSIONIL-25 and IL-33 were involved in the development of allergic rhinitis. This result will be helpful for the further understanding of the pathogenesis of allergic rhinitis, and provide a theoretical basis for the treatment of allergic rhinitis.

Objective To investigate the characteristics of depression in the chronic hepatitis C (CHC) patients who received pegylated interferon therapy.Methods Clinical data of 218 CHC patients who were treated with pegylated interferon were collected in Huzhou Central Hospital,Zhengjiang from January 2008 to December 2013.The Hamilton Depression Rating Scale (HAMD) was used to assess the patient's depression symptoms during the treatment process.The sustained virological response (SVR) rate was assessed 24 weeks after the completion of treatment.Chi square test was used to compare the effects of treatment,gender,age,different types of interferon during the treatment process on depression,and to analyze the dynamic changes of depression and the effect of depression on SVR.Results Of the 218 CHC patients who completed pegylated interferon treatment,the proportion of patients with HAMD score ≥8 (n=73,33.19％) after treatment was significantly higher than that before treatment (n=20,9.17％;x2=40.321,P＜0.05).The female CHC patients were more prone to have depressive symptoms than the male patients (40.50％o [49/121] vs 24.74％ [24/97];x2 =6.097,P＜0.05).The incidence rate of depression in patients younger than 55 years old was lower than that of over 55 years (27.48％ [36/131] vs42.53％ [37/87];x2=5.271,P＜0.05).The incidence rate was not significant different between pegylated interferon α-2a group and pegylated interferon α-2b group after treatment (35.04％ [41/117] vs31.68％ [32/01];x2=0.275,P＞0.05).At week 8 of treatment,the number of depression patients increased most significantly.Totally 113 (51.83 ％) of 218 patients achieved SVR,including 57.53％ (42/73) of patients with depression and 48.97％ (71/145) of patients without depression,but there was no statistical significance (x2 =1.432,P＞0.05).Conclusion In CHC patients received pegylated interferon treatment,elderly and female patients are more susceptible to develop depression and the incidence of depression peaks at week 8 of treatment.

Objective To investigate the classification of cerebral arteriovenous malformation (AVM) associated with hemodynamics correlative aneurysms and its efficiency treated by endovascular treatment.Methods The clinical data of 17 patients of AVM associated with hemodynamics correlative aneurysms undergoing endovascular treatment were analyzed retrospectively.Results Eleven cases of aneurysms with great divergence between the aneurysm and arteriovenous malformation were embolized,6 cases of aneurysms without a great divergence between the aneurysm and arteriovenous malformation,1 case of aneurysm was treated with stent,other 5 cases of aneurysms were not treated.Eleven cases of arteriovenous malformations were embolized completely,4 cases were embolized 71％-90％ and 2 cases were embolized 50％-70％.Six cases with residual were given radiotherapy.Follow-up 3 months to 3 years,there were no cases of cerebral hemorrhage or death.Unhandled 5 cases of aneurysm and 1 case of stent implantation with the follow-up by using digital subtraction angiography,laneurysm with a stent was closed.Three aneurysms were disappeared and 2 aneurysms were reduced significantly among the 5 cases of aneurysms without treatment.One case of aneurysm occlusion in patients with stent implantation.Conclusions Classification based on a great divergence artery or not between the aneurysm and arteriovenous malformation is more instructive for clinical treatmen of cerebral arteriovenous malformation associated with hemodynamics correlative aneurysm.If it has not a great divergence artery between aneurysm and arteriovenous malformation,arteriovenous malformation after a thorough treatment,aneurysms need not be treated.The endovascular treatment for cerebral arteriovenous malformation associated with hemodynamics correlative aneurysms has a good efficiency and can be treated as a priority.

Objective To study whether Bay 11-7082,a nuclear factor-kappa B (NF-KB) inhibitor,could enhance the treatment efficacy of 131I on DTC in nude mice.Methods Total thyroid ablation nude mice models were prepared by intraperitoneal injection of 37 MBq 131I.The xenografted mice were divided into4 groups (18/group):131I group,Bay 11-7082 group,combination of 131I and Bay 11-7082 group and control group.Drug dosages were given as:intraperitoneal injection of 37 MBqT31I on day 1 in the 7th week in the 131I group; intraperitoneal injection of 10 mg/kg Bay 11-7082 on day 1,2 and 3 in the 7th week in the Bay 11-7082 group; intraperitoneal injection of both 131I and Bay 11-7082 as above-mentioned in the combined treatment group; injection of saline in the control group.The xenografted tumor volume curves were drawn every 7 days.Pertechnetate imaging was performed before thyroid ablation.Post-ablative and post-therapeutic 131I whole body imaging was conducted.On day 7 in the 7th week,6 mice in each group were sacrificed and apoptotic staining was performed on excised xenograft tumors.Apoptosis index was determined as positive cells over total ceils × 100％.One-way analysis of variance and q test were performed for statistical analysis.Results Thyroid and stomach could be visualized on pertechnetate imaging before thyroid ablation.Post-ablative 131I imaging showed increased uptake by the thyroid gland.Post-therapeutic 131I imaging showed increased uptake by the malignant tumor lesions in both the 131I and combined groups.Tumor volume curves showed significant differences in volume changes among different methods of therapy from the end of the 8th week (F =11.91-246.56,all P ＜ 0.01).Combined treatment was more effective than single-therapies (q =3.36-14.99,all P ＜ 0.01).Apoptosis indices for the control group,131I group,Bay 11-7082 group and combined group were (0.28 ±0.15)％,(5.49 ±0.69)％,(6.82 ±0.72)％ and (16.21 ± 1.57) ％,respectively (F =304.40,P ＜ 0.01).Apoptosis index in the combined group was significantly higher than those in each single therapy group (q =15.33 and 13.33,both P ＜ 0.01).Conclusion NF-κB inhibition by Bay 11-7082 could effectively enhance the treatment efficacy of 131I on DTC.

BACKGROUND:Currently, discectomy, fusion or decompression is considered an effective and conventional method for the treatment of spinal disease. Although there have been many reports on the adverse effects of diabetes on spinal surgery, but there are stil some differences. OBJECTIVE:To systematical y evaluate the observational studies and case-control studies about the effect of diabetes on the complications of spinal surgery. METHODS:The control ed and comparative studies regarding the effect of diabetes on the results and complications of spinal surgery were searched from the database according to the inclusion criteria. The observed indicators including mortality, revision rate, surgical site infection, the incidence of venous thrombosis, blood loss, operative time and hospitalization time. Two authors participated in extracting the data and evaluating the methodology and quality of the included studies. Meta-analysis was conducted according to the guidelines of epidemiological observational studies (MOOSE). The risk assessment of the extracted data was conducted using RevMan 5.2 software. RESULTS AND CONCLUSION:Eighteen literatures, involving 2 824 063 patients, were eventual y enrol ed. The experimental result showed that the mortality, surgical site infection, incidence of venous thrombosis of diabetic patients after the spinal surgery were significantly higher than those of non-diabetic patients;the hospital stay was significantly longer than that of non-diabetic patients (P<0.05). There were no significant differences in the risk of revision, intraoperative blood loss and operation time between diabetic patients and non-diabetic patients (P>0.05). These results suggest that diabetic patients take a higher risk once accepting the spinal surgery than the non-diabetic patients. Diabetes increases the risks of postoperative mortality, surgical site infection, venous thrombosis and hospitalization time after spinal surgery.

Objective:To examine the risk of long-term cognitive impairment in elderly prostate cancer patients aged 75 years and older undergoing androgen deprivation therapy(DAT), and to analyze the correlation between DAT and cognitive impairment.Methods:This was a retrospective cohort study.Elderly prostate cancer patients aged 75 years and older in the National Cancer Database(SEER)from 1996-2003 were included.According to whether ADT was received, patients were divided into the ADT group(n=82 514)and the control group(n=121 856). Baseline clinical data were compared between the two groups. Kaplan- Meier survival analysis and the Log- rank test were used to compare the incidence of cognitive impairment(dementia and Alzheimer's disease)between the two groups. Cox risk ratio regression analysis was used to assess the relationship between ADT and cognitive impairment. Results:A total of 204 370 patients were enrolled in this study.The mean age of patients was(79.2±4.6)years.Compared with the control group, the ADT group was older and had higher prostate specific antigen levels, higher proportions of poorly differentiated tumors, more complications and a higher proportion of patients receiving radiotherapy( P<0.05). During the follow-up of(12.1±3.3)years, a total of 41 661 cases of dementia were diagnosed, including 13 634 in the ADT group and 28 027 in the control group, and 28 945 cases of Alzheimer's disease were diagnosed, including 9 372 in the ADT group and 19 573 in the control group.Kaplan-Meier survival analysis and the log-rank test showed that the incidence of dementia in the ADT group was higher than that in the control group( χ2=8.10, P=0.004), and the incidence of Alzheimer's disease was also higher in the ADT group than in the control group( χ2=5.06, P=0.024). Cox regression analysis results showed that ADT significantly increased the risk of dementia( HR=1.71, 95% CI: 1.14-2.57, P=0.01)and Alzheimer's disease( HR=1.63, 95% CI: 1.08-2.46, P=0.02), compared with treatment that did not include ADT. Conclusions:The risk of dementia and Alzheimer's disease is increased in elderly prostate cancer patients aged 75 years and older after ADT.

Objective To investigate the characteristics of distribution and the changes in drug resistance of Enterococci,providing reference for clinical treatment.Methods The distribution and drug resistance in 2547 clinical isolates of Enterococci from 2001 to 2007 in Huzhou Central Hospital and the First People's Hospital of Huzhou were retrospectively analyzed.Results A total of 2547 strains of Enterococci were isolated from 94876 clinical specimens(2.68%),in which Enterococcus faecalis wag primary and Enterococcus faecium Wag ranking the second.The positive rate of Enterococci in urine specimens was the highest,and that in sputum specimens was increasing recently.Enterococci showed higg resistance to erythromycin,rifampin,ciprofloxacin and levofloxacin;Enterococcus faecalis Wag more sensitive to penicillin,ampiciilin and ndtrofurantoin than Enterococcus faecium,while Euterococcus faecium was more sensitive to chloramphended and tetracycline than Enterococcus faecalis;both of them were sensitive to vaneomycin and teicoplanin.Conclusions Enterococcus faecalis and Enterococcus faecium are the common pathogen in Enterococci infections.Enterococci show high drug resistance,so the clinical use of antibiotics should be based on the resuhs of drug sensitivity test.

Course teaching for international students in many domestic universities is in English.Some practice and experience of the department of nuclear medicine in Tianjin medical university are introduced from the aspects of teaching course,concerning preparations before class,teaching process and teaching techniques,which will give references to nuclear medicine teaching for international students.