Objective To evaluate the effects of preventive cardiac pacing on acute inferior wall myocardiac infarction ( AIMI ) . Methods A total of 52 patients were given preventive cardiac pacing before Percutaneous coronary intervention (PCI) (group T),while another 68 patients were not (group N).Heart rate and average blood pressure level before reperfusion, average blood pressure level after reperfusion,TIMI flow grade before and after reperfusion,the incidence of malignant ventricular arrhythmia after reperfusion and adverse cardiovascular events during hospitalization were compared in two groups. Results There were no significant differences in heart rate before reperfusion , average blood pressure levels before and after reperfusion , and the TIMI flow grade before and after reperfusion between two groups. The malignant ventricular arrhythmia after reperfusion in group T was significantly higher than that in group N while heart failure and nonfatal myocardial infarction were no significantly different between them. Mortality rate and mortality rate of cardiovascular disease in group T were higher than those in group N, but there were no significant differences between them. Conclusions The temporary cardiac pacing has no additional preventive effect on hemodynamic , but increases the occurrence of malignant ventricular arrhythmia , and the risk of death and cardiovascular events.

Objective To investigate the prevalence and risk factors of metabolic syndrome (MS) in residents in Pudong New District of Shanghai. MethodsA total of 5 584 residents aged 20-80 years were randomly selected from Pudong New District of Shanghai through multistage sampling and interviewed from April to July of 2008. Metabolic syndrome was defined according to three diagnostic criteria for MS, issued by the modified National Cholesterol Education Program Adult Treatment Panel Ⅲ criteria ( NCEP-ATP Ⅲ ), International Diabetes Federation (IDF), and Chinese Diabetes Society (CDS). ResultsThe crude prevalences of MS in the adult population in Pudong New District were 18.2％ and 13.1％ standardized ( male 19. 1％, female 17.4％, the age-standardized 15.6％ and 13.2％ ) with CDS criterion, 31.8％ and 24.4％ standardized ( male 28.4％ ,female 35.1％ ,the agestandardized 22. 7％ and 25.0％ ) with NCEP-ATP Ⅲ criterion, and 21.7％ and 17.0％ standardized ( male 15.9％ ,female 26.7％, the age-standardized 13.8％ and 19.2％ ) with IDF criterion. The age-specific prevalence of MS increased according to three diagnostic criteria, and the age-adjusted prevalence was higher in males than females in junior age groups and higher in females than males in senior ones. Significant differences were present among region, education, marriage status, smoking, work intensity, recreation, and physical activity according to some diagnostic criteria. ConclusionsSubstantial proportions of adults in Pudong New District of Shanghai suffer from metabolic syndrome, and there exists a tendency for young people involved. MS has become a noteworthy public health problem. It suggests that community-integrated control strategy of MS should be made a priority.

Objective: To investigate the migration characteristics and follow-up treatment among HIV/AIDS patients after HIV confirmation in Yiwu City, Zhejiang Province from 2016 to 2020, so as to provide insights into the optimization of the HIV/AIDS control strategy among floating populations. Methods: The reported HIV/AIDS patients' demographics, follow-up and treatment data in Yiwu City from 2016 to 2020 were captured from the HIV/AIDS Prevention and Control Information System of Chinese Disease Control and Prevention Information System. The migration characteristics, antiretroviral therapy and outcomes of HIV/AIDS patients were analyzed after HIV confirmation, and the factors affecting the migration of HIV/AIDS patients after HIV confirmation were identified using a Cox proportional hazard regression model. Results: A total of 1 189 HIV/AIDS patients were enrolled, including 988 men (83.10%) and 806 cases without Zhejiang provincial household registration (67.79%). There were 441 patients (37.09%) migrating out of Yiwu City after HIV confirmation, with a migration rate of 17.73/100 person-years, and there were 366 patients migrating out of Zhejiang Province, with a cross-province migration rate of 30.78%. Among participants without Zhejiang provincial household registration, 395 patients (49.01%) migrated out of Yiwu City, including 337 patients (85.32%) returning to their household registration provinces, which mainly included Yunnan, Sichuan, Guizhou and Hunan. Cox proportional hazard regression analysis showed a high risk of migration among minority ethnic populations (HR=1.375, 95%CI: 1.044-1.811), retires (HR=3.605, 95%CI: 1.771-7.335), students (HR=8.969, 95%CI: 4.095-19.645), patients without Zhejiang provincial household registration (HR=4.545, 95%CI: 3.164-6.529) and patients identified through physical examination of floating populations or employees (HR=1.318, 95%CI: 1.006-1.727), and a low risk among married patients with spouses (HR=0.721, 95%CI: 0.569-0.913) and with an educational level of junior high school and above (HR: 0.428~0.753, 95%CI: 0.280-0.952). Among all floating HIV/AIDS patients, there were 26 cases lost to follow-up (5.90%) and 49 deaths (11.11%). In addition, the proportion of absence of antiretroviral therapy, HIV infection progressing into AIDS patients and failure in HIV inhibition were all greater among floating HIV/AIDS patients than among non-floating patients (P<0.05). Conclusions A high risk of migration was found among HIV/AIDS patients without Zhejiang provincial household registration, unmarried patients, patients with a low education level, retirees, students, and patients identified through physical examination of floating populations or employees in Yiwu City from 2016 to 2020, and migration does not facilitate the sustainability of antiretroviral therapy and follow-up, which may affect the prognosis of HIV/AIDS.

Objective: To explore the trichloroethylene-induced alteration of methylation on the promoter region of SET and related mechanisms in hepatic L-02 cells. Methods: L-02 cells were treated with different concentrations of TCE(0 mmol/L, 1 mmol/L, 2 mmol/L, 4 mmol/L, 8 mmol/L) for 24 h. The genomic DNA were then extracted and modified by bisulfite sodium. The DNA methylation was then analyzed using bisulfite sequencing PCR (BSP). Results: The overall methylation on promoter region of SET was decreased along with the increased concentrations of TCE in hepatic L-02 cells. Moreover, 73 CpG islands were found abnormally altered, among which 9 were predicted in transcriptional factor binding regions. Conclusion The decreased levels of CpG islands in the transcriptional factor binding region may contribute to the elevation of SET in TCE-induced hepatotoxicity.

Objective: To further explore TCE-induced hepatotoxicity and its mechanisms by identification of trichloroethylene (TCE) induced abnormal histone methylation in human liver cells. Methods: L-02 cells were treated with 0 and 8 mmol/L TCE for 24 h. Histones were extracted by acid. Liquid chromatography electrospray ionization tandem mass spectrometry (ESI-LC-MS/MS) were used to identify and quantify TCE related histone methylations. TCE induced abnormal methylation of H3K79 me2 and H3K79 me3 were validated by Western blot analysis. The further analysis of the function of histone abnormal methylation modifications were done by single cell gel electrophoresis (SCGE) and Western blot analysis of p53 and ɤH2AX. Results: After treatment with TCE for 24 h in L-02 cells, the 36 TCE related histone methylation sites in 28 peptide segments were identified by MS. After treatment with TCE in concentrations of 0 and 8.0 mmol/L in L-02 cells for 24 h, the relative expression level of histone H3K79 me3 were 1.00±0.06, 0.70±0.09 (t=15.01, P=0.015); the relative expression level of histone H3K79 me2 were 1.00±0.05, 0.74±0.07 (t=16.69, P=0.018); the Olive Tail Moment about DNA damage were 1.46±0.28, 3.12± 0.68 (t=15.22, P=0.018); the relative expression levels of p53 were 1.00±0.04, 1.24±0.04 (t=18.71, P= 0.012); and the relative expression levels of ɤH2AX were 1.00 ± 0.03, 1.56 ± 0.11 (t=8.32, P=0 045). Conclusion TCE can induce changes in the relative expression level of H3K79 me2 and H3K79 me3 in L-02 cell, and induce DNA damage, suggesting that TCE may induce changes in the relative expression level of H3K79 me2 and H3K79 me3 by DNA damage.

Objective To investigate the prevalence and risk factors of chronic kidney disease (CKD) in adult residents of Shanghai Pudong New Area. Methods A total of 5584 residents aged 20-80 years old were randomly selected from Shanghai Pudong New Area through multistage sampling and interview between April and July 2008. Fasting blood samples and morning urine samples were collected to detect Scr and urinary albumin and creatinine. Urine albumin to creatinine ratio (ACR) and glomerular filtration rate (GFR) was calculated to estimate the renal function. Logistic regression model was used to examine the associations of demographic and lifestyle factors with indicators of kidney damage. Results The age-standardized prevalence of albuminuria, reduced renal function and CKD was 9.9% (male 8.0%, female 12.4%), 1.1% (male 1.3%, female 0.9%) and 11.0%(male 8.8%, female 12.7%), respectively. The prevalence of CKD was higher in female and increased with age. No significant difference in the prevalence was observed between urban and rural areas. Elder, female, high blood pressure, high fasting glucose, dyslipidemia and obesity were associated with CKD independently. Conclusions The prevalence of CKD in Shanghai Pudong New Area is comparable to that previously reported in China or other developed countries, and even higher. CKD is going to be a public health problem and warrants the community-integrated control strategy to prevent the incidence of end-stage renal disease (ESRD) and related complications.

Objective:To explore the research hotspots and development trends in the field of liver fibrosis diagnosis by using visualization methods.Methods:The relevant literatures on liver fibrosis diagnosis were downloaded from the China National Knowledge Infrastructure database. CiteSpace 5.3.R6 software was used to analyze the authors, institutions and key node information to explore the main research groups, institutions and research hotspots and development trends of this field.Results:The analysis showed that the main research authors were Cai Weimin, Guo Qiyong, etc. The main research institutions included were Shengjing Hospital affiliated to China Medical University, Shenzhen Third People's Hospital, etc. The current diagnosis of liver fibrosis was mainly focused on invasive (liver biopsy) and non-invasive (serology, imaging) diagnosis. The non-invasive diagnosis may be the research hotspot and direction of liver fibrosis in the future.Conclusion:The visualization analysis of liver fibrosis diagnosis by CiteSpace software can quickly and intuitively understand the basic knowledge and evolution of this field, as well as the main research directions, hot spots and future development trends.

Objective: To understand the awareness of HIV testing results before having sex among men who have sex with men （MSM） . Methods: The MSM from a gay bar in Zhejiang Province were recruited through convenience sampling method. A questionnaire survey was conducted to collect the information about demographic characteristics,sexual behaviors,awareness of HIV status between sexual partners and HIV testing results during August of the year 2016. The awareness of HIV testing results before having sex among MSM and the influencing factors were analyzed . Results: A total of 124 MSM were recruited in this study,56.56% of whom aged from 25 to 39 years,and 61.29% were single,divorced or widowed. The number of sexual partners they had in the last year ranged from 1 to 40,with median of 8. The MSM who had casual sexual partners accounted for 70.97%. The MSM who had regular HIV testing accounted for 90.32%,yet who would like to share the HIV testing reports with partners only accounted for 18.55%. Whether asking about the HIV status before having sex or not was associated with age,marriage status,the number and characters of sexual partners（P<0.05）. The MSM who were informed of the HIV status of commercial partners,casual partners and regular partners accounted for 0,5.10% and 19.77%,respectively. The main reasons for MSM not knowing about the HIV status of their sexual partners were“condom use would prevent HIV infection”（78.38%）,“never thought about HIV infection”（53.15%）,and “there was no need to ask as the partner looked healthy”（36.94%） . Conclusion The proportion of MSM who were aware of HIV testing results before having sex was not high and was associated with age,marriage status,the number and characters of sexual partners. Lack of knowledge about HIV infection might contributed to this low proportion.

Objective To explore the prevalence and epidemic characteristics of overweight, obesity, and central obesity in Shanghai Pudong New Area. Methods Multi-stage stratified random sampling method was conducted in Pudong New Area in 2013. Residents over 15 years old were randomly selected from 13 communities and participated in the cross-sectional study. A structured questionnaire was used to collect the information and physical examination, biochemical assays were also conducted. SPSS 20. 0 was used to analyze the results. Results The averagebodymassindexofparticipantswas(25.04±3.79)kg/m2andtheaveragewaistcircumferencewas(82.44± 9. 51) cm. The prevalences of overweight, obesity, and central obesity were 41. 67%, 17. 70%, and 31. 32%respectively. Standardized prevalences of overweight, obesity, and central obesity were 34. 39%, 16. 96%, and 25. 66% respectively, according to 2010 national age composition of population. Statistically significant sex differences were found among the prevalence of overweight, obesity, and central obesity groups(all P<0. 05). The prevalence of central obesity in female was raised by increasing age. Residents with hypertension, hyperglycemia, dyslipidemia, and metabolic disorders had higher prevalences in overweight, obesity, and central obesity ( all P<0. 05). Conclusion The prevalences of overweight, obesity, and central obesity among the residents in Shanghai Pudong New Area were relatively high. Relevant risk factors should be explored to promote health education that may enhance people′s awareness of weight management.

Objective To summarize the clinical efficacy of thoracic endovascular aortic repair (TEVAR) in the treatment of Stanford type B thoracic aortic dissection. Methods The clinical data of 80 patients with Stanford type B aortic dissection who had underwent TEVAR in cardiac surgery of the First Affiliated Hospital of University of Science and Technology of China from January 2017 to December 2017 were analyzed retrospectively. Among them, there were 56 males and 24 females. The effect of operation and postoperative complications were observed. The diameters of different aortic levels before and after TEVAR were compared in order to understand the aortic remodeling after TEVAR. Results All 80 patients were operated successfully. A total of 87 stents were implanted, of which 2 stents were placed in 7 patients. Four patients died 30 days after operation, 3 of whom were diagnosed as dissection rupture before operation and underwent emergency TEVAR. The cause of death was massive hemorrhage due to re-rupture of dissection. One patient complicated with massive cerebral infarction before operation died of respiratory failure. Six months after operation, CTA showed that the diameter of the aortic true lumen at the level of the left subclavian artery, the maximum diameter of the tumor and the level of the diaphragm significantly increased: (30.1 ± 3.5) mm vs. (24.4 ± 4.2)mm, (33.4 ± 5.1) mm vs. (24.9 ± 6.2) mm,(26.1±4.9) mm vs. (19.3 ± 3.1) mm; all P values＜0.01, and the false lumen significantly decreased: (3.5 ± 1.7) mm vs. (11.2 ± 5.7) mm, (9.1 ± 2.4) mm vs. (18.3 ± 5.9) mm, (6.2 ± 1.3) mm vs. (14.7 ± 5.2) mm, all P values＜0.01. There was no significant difference in the overall diameter of aorta before and after operation (P > 0.05). Conclusions The treatment of Stanford type B aortic dissection with TEVAR has significantly good short-term clinical efficacy, which is less traumatic and quick to recover. However, the long-term efficacy remains to be observed.