Objective To summarize the experiences in diagnosis and treatment of thymoma in 120 cases. Methods 120 patients with thymoma were operated on, and the diagnosis was confirmed pathologically, from January 1994 to December 2003 in our department. According to Masaoka clinical and pathological classification, 54 cases were stage Ⅰ, 32 were stage Ⅱ, 22 were stage Ⅲ, 12 were stage Ⅳ. In 42 cases there were symptoms of myasthenia gravis. Result Total excision was performed in 112 cases and partial excision in 8 cases. When the tumor was beyond stage Ⅱ, postoperative radiotherapy was given. Recurrence occurred in 5 patients 1-7 years after operation. Conclusions Surgical resection is currently the main therapeutic method for tumor of the thymus. The preferred surgical approach was excision of thymoma and removal of perithymic fat in the anterior mediastinum through a median sternotomy. Thymoma is a potentially malignant disease, and the patients with the tumor beyond stage Ⅰ must undergo postoperative radiotherapy. Local recurrence of the tumor should be surgically excised.

Objective To explore the relationship between paraoxonase1 (PON1) L55M gene polymorphisms and atherosclerotic cerebral infarction(CI)in Hunan Han people. Methods The study population was comprised of 153 atherosclerotic cerebral infarction patients and 153 healthy individuals. The PON1-L55M genotypes were determined by restriction fragment length polymorphism. Results MM genotype was not found both in CI and control group. In CI group, genotypic frequency of LL was 96.7% and LM was 3.3%. The allele frequency of L was 0.984 and M was 0.016. In control group, genotypic frequency of LL was 93.5% and LM was 6.5%. The allele frequency of L was 0.968 and M was 0.032. PON1-L55M polymorphism revealed no significant difference of genotype and allelic distribution in CI patients and controls.Conclusion The polymorphism of PON1-L55M is not related to the incidence of atherosclerotic cerebral infarction in Hunan Han people.

Objective To compare the changes in the management of severe preeclampsia during a ten-year period, and the maternal and perinatal outcome. Methods Totally, 305 cases of severe preeclampsia were collected in our hospital from January 1999 to December 2003. The management, mode of delivery, frequency of complications and maternal and fetal outcomes were compared with the 349 cases from January 1994 to December 1998. Results The incidence of severe preeclampsia, that being diagnosed at 0. 05], but the perinatal mortality rate of those cases

Objective To investigate the antibiotic-resistant gene mecA and the prevalence of Panton-Valentine leukocidin (PVL) gene, toxic shock syndrome toxin (TSST-Ⅰ) gene in S. aureus. Methods A total of 74 S. aureus were collected from clinical specimens. The mecA, PVL and TSST-Ⅰ genes were detected by PCR.Results PVL gene was identified in 22 S. aureus isolates. The prevalence of PVL was 29.7% in S. aureus, 36.6% in MRSA and 21.2% in MSSA. The difference was not statistically significant (P>0.05). The prevalence of MRSA was 55.4% in 74 S. aureus. The prevalence of TSST-Ⅰ gene was 6.8%. TSST-Ⅰ gene was not detected in MSSA.Conclusions MRSA strains show highly resistant to antibiotics. PVL- and TSST-Ⅰ-positive S. aureus are more pathogenic.

Objective To explore the changes of different echocardiographic indices in patients receiving catheter ablation for atrial fibrillation with different outcomes. Methods 75 patients received catheter ablation for atrial fibrillation during the period of January 2012 to February 2014. Before and 6 monthes after ablation , all the patients were examined left atrial volume index (LAVi), left atrium pressure (LAP), and left atrial ejection force (LAF) with echocardiography. Then after 6 months, according to the outcomes of the procedure, we divided the patients into two groups and compared the changes of these three parameters. Results In sinus group, LAVi decreased while LAF increased after treatment [LAVi: (29.3 ± 1.9) vs. (41.2 ± 9.3), LAF:(1.31 ± 0.61) (kg·cm)/s2 vs. (0.83 ± 0.22) (kg·cm)/s2, P < 0.05]; But LAP did not change [(55.7 ± 23.3)mmHg vs. (58.9 ± 18.6)mmHg, P > 0.05]; while in recurrent group, there were no changes in LAVi, LAP, and LAF after treatment (P > 0.05). Conclusions Radiofrequency catheter ablation is safe and effective in treatment of atrial fibrillation, resulting in significant improvements in left atrial volume and cardiac function.

Through summarization on published literatures on allergic rat model in recent 20 years, domestic current research status and trend were analyzed. Some insights were provided on how to build a standard process for modeling and post-modeling evaluation. “Allergic rhinitis,” “rat model of allergic rhinitis”, or “animal experiment” was used as search terms. Related published articles were searched in the CNKI database from August, 1993 to October, 2013. Documents and data, including modeling method, drug dose, modeling cycle, model assessment described in the articles were extracted, summarized and quantitative analyzed. The results showed that 208 valid articles were included in this study. SD rat was used as animal model. Ovalbumin plus aluminum hydroxide were used as adjuvant sensitizing agents. Intraperitoneal injection plus nasal stimulation were the most commonly used modeling method. Behavioral evaluation scale score was used as the main evaluation index. It was concluded that currently there were many methods for allergic rhinitis animal modeling domestically. The post-modeling evaluation was relatively single. It was urgent and necessary to establish the standard process for modeling and post-modeling evaluation for allergic rhinitis animal model.

Compared with proinflammatory processes in the development of type 2 diabetes,our knowledge on anti-inflammatory cytokines is rather limited.Anti-inflammatory cytokines such as adiponectin,interleukin 1 receptor antagonist(IL-1RA),transforming growth factor-β1 (TGF-β1),growth differentiation factor-15 (GDF-15),omentin,and secreted frizzled-related protein 5 (SFRP5) are strongly associated with increased risk of type 2 diabetes:Adiponectin and omentin levels decreased before type 2 diabetes,in contrast,concentrations of IL-1RA,TGF-β1,GDF-15 are increased.Change of SFRP5 levels in impaired glucose tolerance and type 2 diabetes remains controversial.This paper will summarize and recommend studies that investigated associations between circulating levels of anti-inflammatory cytokines and type 2 diabetes.

Objective To evaluate the effects of exercise therapy in the treatment of hemiplegia following cerebral hemorrhage. Methods Activities of daily living(ADL) scoring and Fugl Meyer test were performed in 46 patients with hemiplegia following cerebral hemorrhage undergoing exercise therapy before and after treatment. Results Significant improvement of ADL, upper extremity function, and balance and walking abilities was found after treatment( P

We investigated the Toxop lasma infection prevalence among planned pregnant women in Chongqing ,and to pro‐vide reference for the first level intervention of birth defects in the region .A total of 11 953 planned pregnant women were se‐lected by proportionally stratified multi‐stage random sampling method .Questionnaire survey was given to the women ,and blood samples were collected .Specific IgM and IgG antibodies against Toxoplasma were detected with ELISA .Results showed that among the 11 953 cases surveyed ,Toxoplasma IgM was positive in 71 cases ,with the positive rate of 0 .59% ;IgG was positive in 771 cases ,with the positive rate of 6 .54% .The positive rate of IgM and IgG antibodies in the metropolitan core re‐gion of the city was higher than that in the suburb areas (χ2 =35 .28 ,P<0 .000 1 ;χ2 =82 .65 ,P<0 .000 1) .The positive rate of IgM antibody increased with the educational level (χ2trend=3 .25 ,P=0 .001 1) .The positive rates of IgM and IgG varied in occupations among women (χ2 =13 .93 , P= 0 .016 0;χ2 = 15 .58 ,χ2 =0 .008 1) ,with the highest rate of public officials . Planned pregnant women with the history of abnormal pregnancy outcomes had higher positive rate of T .gondii IgM and IgG antibodies than those in the control (χ2 =6 .85 ,P=0 .008 9;χ2 =59 .25 ,P<0 .000 1) .There was no significant difference of IgM positive rate between the planned pregnancy women who had closed contact to cats and the control group (χ2 =0 .23 ,P=0 .628 6) ,while the positive rate of IgG was higher than that of the control group (χ2 =9 .95 ,P=0 .001 6) .T .gondii infec‐tion rate was on the low level of planned pregnant women in Chongqing .Adverse pregnancy outcomes are related to Toxoplas‐ma infection .

Objective To investigate the prevalence of hepatitis B virus infection and its epidemiological characteristics among planned pregnancy couples in Chongqing.Methods A total of 10 712 planned pregnancy couples were selected by proportionally stratified multi-stage random sampling method during April and December 2013.A questionnaire survey was performed, and enzyme linked immunosorbent assay ( ELISA) was used for hepatitis B virus surface antigen ( HBsAg ) and hepatitis B surface antibody ( anti-HBs) detection.SAS 8.2 was adopted for data process.Chi-square test and test for linear trend were performed to compare the rates of HBsAg and anti-HBs among different populations.Results Among 21 424 individuals, 1 718 (8.02%) were HBsAg positive.The positive rate of HBsAg in husbands was 9.48%, which was significantly higher than that in wives (6.55%,χ2 =63.39, P<0.01).Anti-HBs was positive in 8 967 (41.85%) individuals, and the positive rates in husbands and wives were 42.39% and 41.32%respectively (χ2 =2.54, P>0.05).The positive rates of HBsAg and anti-HBs increased with the age (χ2 =2.98 and 9.83,P<0.01).The highest HBsAg positive rate and lowest anti-HBs positive rate were observed among individuals of southeast of Chongqing.The positive rates of HBsAg and anti-HBs varied in people with different occupation.The highest HBsAg and anti-HBs positive rates were found in private business owners (9.18%) and public employees (49.69%) , respectively;and the lowest HBsAg and anti-HBs positive rates were found in public employees (6.79%) and farmers (39.08%), respectively.As the education level increased, HBsAg positive rate was decreasing (χ2 =-3.33, P<0.01), and anti-HBs positive rate was increasing (χ2 =9.73, P<0.01).Conclusions The prevalence of HBV infection is still high among planned pregnancy couples in Chongqing in the year of 2013.Vaccination and the related treatments should be enforced in population with high risk of HIV infection.