[Serum anti-hepatitis E virus IgG antibody and risk factors among female residents of Xinmi in Henan Province].

Objective: To determine the distribution of anti-hepatitis E virus (HEV) IgG antibody and anti-human papilloma virus (HPV) IgG antibody among female residents of Xinmi and investigate the risk factors of HEV infection.

Methods: A questionnaire was used to collect data on the demographic characteristics and suspected risk factors of HEV infection, including behavioral habits. All questionnaire responders also provided peripheral blood samples for investigation by enzyme-linked immunosorbent assay to detect HEV-IgG.

[Knowledge, attitude and practice on drinking water of primary and secondary students in Shenzhen].

Objective: To investigate the status on drinking water related knowledge, attitude and practice of primary and secondary students in Shenzhen.

Methods: All 832 primary and secondary students from three schools in Shenzhen were selected by using multi-stage random sampling method. The information of drinking water related knowledge, time of drinking water and the type of drink chose in different situations were collected by questionnaires.

[Prospective study on the relation between serum vitamin D levels and liver cirrhosis risk].

Objective: To explore the relation between serum vitamin D (25(OH)D) concentrations and liver cirrhosis.

Methods: A nested case control study was designed based on the Nutrition Intervention Trial (NIT) cohort, from which non-degraded serum samples and complete baseline and follow-up data were available for 282 individuals diagnosed with liver cirrhosis and 564 healthy controls. The serum samples were tested by enzyme-linked immunosorbent assay to detect and quantify 25(OH)D, as well as hepatitis B virus surface antigen and core antibody and hepatitis C virus antibody.

[Prospective study of the association between fasting glucose concentrations and liver cirrhosis risk].

Objective: To investigate the association between concentration levels of fasting serum glucose and liver cirrhosis.

Methods: A nested case-control study was carried out based on the sample cohort from the Nutrition Intervention Trials previously conducted in one country in Henan province. Using an automatic biochemical analysis system and enzyme-linked immunoassay, baseline serum samples from 310 liver cirrhosis patients and 620 healthy controls were tested for fasting glucose concentration, hepatitis B surface antigen (HBsAg), hepatitis B core antibody (anti-HBc), and hepatitis C virus antibody (anti-HCV).

The association between dietary intake and cervical intraepithelial neoplasia grade 2 or higher among women in a high-risk rural area of China.

Objective: To evaluate the relationship between dietary intake and risk of cervical intraepithelial neoplasia grade 2 or higher (CIN2+) while controlling for human papillomavirus (HPV) infection.

Methods: In 1999 and 2002, 11,031 women aged 35–50, were screened as part of two cross-sectional population-based cervical cancer screening studies in China. Dietary food intake information was collected by a 79-item Food Frequency Questionnaire (FFQ).

[Study of molecular mechanism of Rheum offcinale against Yersinia pestis].

To investigate molecular mechanism of traditional Chinese medicine Rheum offcinale against Yersinia pestis, whole genome DNA microarray that contains 4005 annotated genes of Y. pestis was used. The minimal inhibition concentration (MIC) of R.

[Determine and parallel analysis of three kinds of PAEs in serum for obese children].

Objective: To study the serum contents of the PAEs of obese children at the ages of 10 to 12 years, in order to estimate the harm of PAEs on obese children.

Methods: The contents of three kinds PAEs(DEP, DBP and DEHP) in the serum for two groups of children, including 36 obese children and 36 normal weight children, were determined by the reversed phase high performance liquid chromatography (RP-HPLC) method And the average measure value of three kind PAEs between two groups of children were analysed.

Results: The median serum levels of PAEs were 0.