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OBJECTIVES@#To identify the alternative splicing isoform of mouse sweet taste receptor T1R2, and investigate the effect of lipopolysaccharide (LPS) local injection on T1R2 alternative splicing and the function of sweet taste receptor as one of the bacterial virulence factors.@*METHODS@#After mouse taste bud tissue isolation was conducted, RNA extraction and reverse transcription polymerase chain reaction (PCR) were performed to identify the splicing isoform of T1R2. Heterologous expression experiments @*RESULTS@#T1R2 splicing isoform T1R2_Δe3p formed sweet taste receptors with T1R3, which could not be activated by sweet taste stimuli and significantly downregulated the function of canonical T1R2/T1R3. Local LPS injection significantly increased the expression ratio of T1R2_Δe3p in mouse taste buds.@*CONCLUSIONS@#LPS stimulation affects the alternative splicing of mouse sweet taste receptor T1R2 and significantly upregulates the expression of non-functional isoform T1R2_Δe3p, suggesting that T1R2 alternative splicing regulation may be one of the mechanisms by which microbial infection affects host taste perception.
Subject(s)
Animals , Mice , Alternative Splicing , Lipopolysaccharides , Receptors, G-Protein-Coupled/metabolism , Taste , Taste BudsABSTRACT
Objective To evaluate the safety of two types of enterovirus 71(EV71) inactivated vaccine (Vero cell vs. Human Diploid cell) after inoculation. Methods Subjects were children vaccinated EV71 vaccine between November 2016 and May 2017 at vaccination clinics in Xiacheng District. According to the type of EV71 vaccine, subjects were divided into the Vero Cell group and the Human Diploid Cell group. The adverse effects were collected after 30 min, 3 days and 30 days of injection, respectively. Results A total of 3158 vaccinated children were observed, with 1529 in Vero Cell group and 1629 in Human Diploid Cell group. The rates of adverse effects were 0.59％ (9 cases) of Vero cell group and 0.55 ％ (9cases) of Human Diploid Cell group. All of the adverse effects were systemic reactions such as fever, diarrhea and vomiting. No significant differences were observed between the two groups above in the incidence and severity of adverse effects(P >0.05) . The incidence and severity of adverse effects of the first dose were significantly higher than the second dose in two groups (P<0.05) . Conclusion EV71 vaccine was safe to vaccinate, and no statistical difference in the adverse effects was found between the two types of vaccine.
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Objective To investigate health-related quality of life of the empty-nest elderly in Hangzhou and its influencing factors.Methods A total of 1000 empty-nest elderly were selected to participate the questionaire survey, using a stratified cluster sampling method,and the five-dimensional European quality of health scale(EQ-5D)was used to measure the health status of the empty-nest elderly. Chi square test and univariate ANOVA analysis were used to identify potential influencing factors.Results A total of 992 participants were involved in this study. The proportions of participants who had difficulties or problems in mobility,self-care,usual activities,pain/discomfort,and anxiety/depression were 16.13%,11.09%,19.76%,48.49% and 29.84% respectively. In terms of usual activities, pain/discomfort,and anxiety/depression,the proportions of empty-nest elderly who had difficulties or problems in those three dimensions were significantly higher in urban areas than in rural areas(P<0.05). The range of EQ-5D utility value was -0.11 to 0.85,with an average value of 0.75±0.13. The study showed that the elderly without chronic diseases, tending to pour out their feelings or ask for help when they were in trouble,participating activities held by political parties or communities,with lower personal incomes,and depending on children to support their life after retirement were more likely to have higher EQ-5D utility values(all P<0.01).Conclusion The health-related quality of life of empty-nest elderly in Hangzhou is at a low level,and is influenced by several soci-demographic factors. Encouraging the elderly to ask for help,improving the management of chronic diseases and providing more social supports could improve the health-related quality of life of the elderly.
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Objective To learn the pension willingness and influencing factors of empty-nest elderly in Hangzhou City. Methods A total of 1000 empty-nest elderly in Hangzhou, taking a formal hosusehold registration, living≥1 year, age≥ 65 years old, were selected from two urban districts and three suburbs by multi-stage simple random sampling, and were surveyed with questionnaires. The data was analyzed by logistic regression model to study the influencing factors of pension willingness. Results A total of 992 valid questionnaires were collected and the effective rate was 99.20%. There were 407 (41.03%) , 365 (36.79%) , 208 (20.97%) and 12 (1.21%) people in the 992 empty-nest elderly, choosing their children's support, social pension insurance, personal pension and other old-age methods. Multivariate logistic regression analysis showed that, the empty-nest elderly who worried about pension costs (OR=3.007, 95%CI:1.751-5.155), and the greatest wish was physical health (OR=4.404, 95%CI:1.461-13.276), family harmony (OR=7.724, 95% CI: 2.158-27.646), children work smoothly (OR=4.811, 95%CI: 1.203-19.246) . The lower health score (OR=0.982, 95% CI: 0.965-0.999), choosing their children's support as their pension willingness were relatively high, and the empty-nest elderly who worried about pension costs (OR=2.058, 95%CI: 1.267-3.344), the original occupation for the staff (OR=2.353, 95% CI: 1.091-5.078) , city household registration (OR=0.546, 95% CI:0.349-0.856) . The lower the health score (OR=0.979, 95%CI: 0.966-0.993) choose social pension insurance as their pension willingness would be relatively high pension. Conclusion The influencing factors of the pension willingness of the empty-nest elderly were worried about pension costs, the greatest wish, and health status, urban and rural household registration.