Objective To investigate the relationship between Helicobacter pylori (H. pylori) infection and concentration of reactive oxygen species (ROS) in AGS cells. Methods AGS cells were cultured with either Hp11638 (CagA~+ , VacA~+ ) extract or Hp11638 mutant (CagA~+ , VacA~-) extract for 48 hours, then the cells and supernatants were collected. The concentration of ROS in AGS cells was measured by flow cytometry. The eytochrome C reduction was detected by spectrophotometer at 550 nm. Results The ROS levels in the AGS cells were correlated with two H. pylori strains in a concentration- and time-dependent manner. The ROS levels in AGS cells treated with Hp11638 extract in different concentrations or times were correspondingly higher than those treated with Hp11638 mutant extract. Similar results were found in examination of cytochrome C reduction. Conclusion The elevation of ROS in AGS cells is related to effects of H. pylori proteins, and the VaeA protein involves in the process.

Objective To understand the various HPV types and the factors influencing their distribution among women with normal cervical cytology in the Shanghai area, to provide basic data for cervical cancer prevention and vaccine use.Methods A questionnaire-based survey was conducted among 3 372 married women in the Shanghai area. A PCR reverse dot blot (PCR-RDB) method was adopted for HPV genotyping of cervical exfoliated cell samples from 3 206 women. Odds ratio (OR) for HPV infection were analyzed using logistic regression. Results Of the 3 206 women investigated, 669 (20.87%) were positive for HPV infection. The highest incidence of HPV infections was seen in the age groups of 55-59 years, 50-54 years and 45-49 years, with the rates of positive detection being 27.67%, 21.65%, and 21.55%, respectively. While 70.4% of the positive cases had a single infection, 29.6% showed multiple infections. In cases with multiple infections, double infection was predominant (20.63%). The top five high-risk gene types were HPV52(3.65%),HPV53(2.71%),HPV51(2.03%),HPV58(1.87%),and HPV16 (1.40%). The top three low-risk gene types were HPV81 (2.03%), HPV42 (1.43%), and HPV55 (1.31%). Among the women with HPV infections,there were 483 having medium-high-risk HPV infection.There were significant differences in the age,the age at first sexual activity,sexual activities per week,education,and alcohol consumption between HPV positive and HPV negative patients. Age stratification showed that the infection rates in the 55-59 years old group were significantly higher than that in the other age groups(χ2=15.349, P=0.000). Both single factor and multivariate non-conditional logistic regression analyses showed that higher education and the start of sexual activity at a later age were protective factors for medium-high-risk HPV infection,with regression coefficients of-0.165 and-0.08,respectively (P<0.01) in the multivariate analysis. The risk factors included age between 55- 59 years, menstrual status (menopause), sexual activity (≥3 times per week) and alcohol consumption. High-risk HPV infections also had the same risk factors,and the odds ratios were 1.558,1.275,and 1.678,respectively(P<0.01).However, 55-59 years of age and alcohol consumption are independent risk factors for medium-high risk HPV infection. Conclusions High-risk HPV in women of Shanghai is commonly caused by HPV52, HPV53, HPV51,HPV58,and HPV16.The high-risk group includes women who are 55-59 years old.While drinking is an independent risk factor for medium-high risk HPV infection, a moderate sex life and delayed age at first sex can reduce the risk of high-risk HPV infections.

Objective: To explore the effect of continuing nursing intervention with traditional Chinese medicine (TCM) characteristics on mental state and quality of life of empty nest elderly patients with hypertension, and to provide evidence-based theoretical basis for the development of continuing nursing care for empty nest elderly patients with hypertension. Methods: Totally 100 cases of empty nest elderly patients with hypertension were randomly divided into study group and control group by random number method, 50 cases in each group; two groups of patients were given regular nursing according to doctor's instructions to adjust blood pressure drugs and hypertension; control group patients were given routine continuing nursing intervention after discharge; study group patients were given traditional Chinese medicine characteristics on the basis of the control group. Sustained nursing intervention; Self-rating Anxiety Scale (SAS) was used to measure the degree of anxiety at admission, discharge and 6 months after discharge. The rate of blood pressure control reaching the standard at admission, discharge and 6 months after discharge and the clinical effect at discharge and 6 months after discharge were compared between the two groups. SF-36 was used to assess the quality of life of the 2 groups at admission, at the time of discharge and 6 months after discharge. Results: There was no significant difference in SAS scores between the two groups at admission and discharge (P>0.05). The SAS score in the study group at 6 months after discharge was (44.65 ± 4.32) points and (46.91 ± 4.56) points in the control group, and there was significant difference (t=2.544, P=0.006). There was no significant difference in the control rates of systolic and diastolic blood pressure between the two groups at admission and discharge (P>0.05). The control rates of systolic blood pressure and diastolic blood pressure in the study group were better than those in the control group at 6 months after discharge (t=4.762,4.336, P = 0.029, 0.037); there was no significant difference in the clinical efficacy between the two groups at discharge (P>0.05), and the clinical efficacy of the study group at 6 months after discharge was better than that of the control group (u=1.997, P=0.046). There was no significant difference in the scores of SF-36 at discharge (P>0.05); the scores of SF-36 at discharge for 6 months in the study group were significantly better than those in the control group (t=4.875-8.975, P=0.000); no cardiovascular and cerebrovascular events occurred in the study group for 6 months, 4 cases of unstable angina pectoris and 4 cases of cerebral infarction occurred in the control group. In 2 cases, the incidence of cardiovascular and cerebrovascular events was 12.00% (6/50). The difference between the two groups was statistically significant (χ²=4.433, P=0.035). Conclusion Continuous nursing intervention with TCM characteristics can significantly improve the anxiety level of empty nest elderly patients with hypertension, is conducive to the control of blood pressure, improve the clinical efficacy, reduce the incidence of cardiovascular and cerebrovascular events, improve the quality of life of patients, and has the advantages of simplicity, safety and reliability, low cost, and so on. It is worth popularizing and applying.