ABSTRACT
Objective To understand the molecular epidemiological characteristics of staphylococcus aureus(S.aureus),which was isolated from food poisoning in Xian between 2013 and 2017. Methods A total of 26 S.aureusisolates from 8 outbreaks were analyzed by using pulsed field gel electrophoresis(PFGE), multilocus sequence typing(MLST) and spa typing. polymerase chain reaction(PCR) analysis was used to analyze the staphylococcal enterotoxin genes sea to sei. Results 26 strains of S.aureus were divided into 7 types of A-G by PFGE; They were divided into 3 types by MSLT, ST6 accounted for 65.38% which was the main type; They were Divided into 4 types by spa typing, t701 accounted for 65.38 % which is the dominant type. The sea accounted for 76.92% (20/26) in the enterotoxin gene testing; sed-seg accounted for 23.08% (6/26); other enterotoxin genes were not detected. Conclusion The predominant type of S.aureus isolated from food poisoning in Xi'an was ST6-t701-seaprofile from 2013 to 2017. The first detection of the new enterotoxin gene seg, PFGE, MLST and spa typing were combined to fully understand the molecular epidemic characteristics of strains.
ABSTRACT
Objective To understand the relationship between green tea drinking and/or garlic consumption and lung cancer.Methods A population-based case-control study was conducted in Ganyu county,Jiangsu province.Epidemiological data including demography,lifestyle,environmental exposures and dietary habits were collected by face-to-face interviews using a standardized questionnaire.Unconditional logistic regression was used to estimate adjusted odds ratios (OR) and their 95％ confidence intervals (CI) in both univariate and multivariate analyses.Results Both green tea drinking and garlic consumption were inversely associated with lung cancer and the adjusted ORs were:0.78 (95％CI:0.65-0.95) for green tea,0.79 (95％ CI:0.66-0.95) for garlic intake,and 0.69 (95％CI:0.53-0.89) for both,respectively.They also modified the associations of smoking,fried food intake and cooking oil under high-temperature with lung cancer as risk factors.Potential interactions were found between garlic or green tea and the risk factors of lung cancer.Conclusion Both green tea drinking and garlic consumption might serve as protective factors on lung cancer.
ABSTRACT
<p><b>OBJECTIVE</b>To estimate the association between overweight, obesity and the risk of breast cancer in Chinese female population.</p><p><b>METHODS</b>Literatures published in China and abroad about overweight, obesity and breast cancer risk among Chinese females were searched. We used "breast cancer", "overweight", "obesity", "weight", "body mass index" and "risk factors" as keywords, to retrieve papers in Chinese literature databases including CNKI, Wanfang and Weipu database. The same strategy was used to retrieve English papers in English literature database including Embase database, PubMed, Science Direct, Elsevier and Cochrane database, supplemented by literature tracing method. Time range was from the founding of each database to April 2012. A total of 124 research papers were collected. Using Stata11.2 software, meta-analysis was conducted, combined odds ratio (OR) and 95% confidence interval (CI) were calculated to estimate the associations between overweight, obesity and the risk of breast cancer in Chinese female population.</p><p><b>RESULTS</b>Eighteen studies were included in meta-analysis, among them 12 studies were in Chinese and 6 were in English, with a number of 7217 cases and 81 605 controls. Results showed a 7.7% increased risk of breast cancer among overweight or obesity women (OR = 1.08, 95%CI: 1.04 - 1.12). Compared with normal BMI women, the OR (95%CI) of overweight or obesity women were 1.07 (1.03 - 1.11) and 1.56 (1.29 - 1.84) before and after the adjustment of menopausal status.</p><p><b>CONCLUSION</b>Overweight, obesity may be important risk factors of breast cancer in Chinese female population. The intervention and control activities may reduce the risk of breast cancer at population level.</p>
Subject(s)
Female , Humans , Asian People , Breast Neoplasms , Epidemiology , China , Epidemiology , Obesity , Epidemiology , Overweight , Epidemiology , Risk FactorsABSTRACT
Objective To examine the association between tea drinking and the risk of lung cancer in Chinese population.Methods All relevant published articles in Chinese and English literature database were identified.Meta-analysis was conducted.Combined odds ratio (OR) and 95％ confidence interval (CI) were calculated to estimate the associations and dose-response relationship between tea drinking and the risk of lung cancer.Results Twelve studies were included.An inverse association with lung cancer was observed on tea drinkers when compared to non-tea drinkers (OR=0.66,95％CI:0.49-0.89).Conclusion Tea drinking might serve as a protective factor on lung cancer in the Chinese population.