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ObjectiveTo investigate the effect of Danzhi Xiaoyaosan on the phosphorylation of tau protein and different sites of glycogen synthase kinase-3β （GSK-3β） and phosphoseryl/suanyl phosphate protein phosphatase 2A （PP2A） in the hippocampus of rats with Alzheimer's disease （AD） and its mechanism. MethodThe rat model of AD was established by injecting okadaic acid into the bilateral hippocampus of 90 male Wistar rats in SPF grades. The rats with successful modeling were selected and randomly divided into model group， aricept group （0.5 mg·kg-1）， and Danzhi Xiaoyaosan high， medium， and low groups （17.55， 8.77， and 4.38 g·kg-1）， and then gavaged for 42 d， once a day. Morris water maze was used to detect the learning and memory ability of rats， Nissl's staining was used to observe the morphological structure of neurons in the hippocampus， and Real-time polymerase chain reaction （Real-time PCR） was used to detect the mRNA expression levels of tau protein， GSK-3β， and PP2A. Western blot was used to determine the protein expression levels of tau protein， GSK-3β， and PP2A. ResultAs compared with the control group， the learning and memory abilities of the rats in the model group were significantly decreased （P<0.01）， and the hippocampal CA3 region cells had abnormal structure， disorderly arrangement， and decreased number. The expression levels of GSK-3β mRNA， GSK-3β， p-GSK-3β-Tyr216， p-PP2A， and p-tau were increased in the model group as compared with the control group （P<0.01）， and those of p-GSK-3β-Ser9 and PP2A decreased significantly （P<0.01）. As compared with the model group， the learning and memory ability of the Aricept group and the Danzhi Xiaoyaosan groups were improved （P<0.05， P<0.01）， and the cell morphology and the number of hippocampal CA3 regions were better. The mRNA expression levels of PP2A and tau in the Aricept group were significantly up-regulated （P<0.05）， the mRNA expression level of GSK-3β was significantly down-regulated （P<0.01）， and the protein expression levels of GSK-3β， p-GSK-3β-Tyr216， and p-PP2A were down-regulated （P<0.05， P<0.01）， and the protein expression level of PP2A was significantly up-regulated （P<0.01）. As compared with the model group， the mRNA expression level of PP2A in the high-dose Danzhi Xiaoyaosan group was significantly up-regulated （P<0.01）， and that of GSK-3β was significantly down-regulated （P<0.01）， whereas the protein expression levels of p-PP2A， p-GSK-3β-Tyr216， and p-tau were down-regulated （P<0.05， P<0.01）， and the protein expression level of PP2A was significantly up-regulated （P<0.01）. As compared with the model group， the mRNA expression level of GSK-3β was significantly down-regulated in the medium-dose Danzhi Xiaoyaosan group （P<0.01）， the protein expression levels of GSK-3β， p-GSK-3β-Tyr216， and p-tau were down-regulated （P<0.05， P<0.01）， and the protein expression level of PP2A was significantly up-regulated （P<0.01）. As compared with the model group， the mRNA expression level of PP2A was significantly up-regulated in the low-dose Danzhi Xiaoyaosan group （P<0.01）， and that of GSK-3β was significantly down-regulated （P<0.01）， whereas the protein expression levels of GSK-3β and p-GSK-3β-Tyr216 were down-regulated （P<0.05， P<0.01）， and those of p-GSK-3β-Ser9 and PP2A were significantly up-regulated （P<0.01）. ConclusionDanzhi Xiaoyaosan can improve the learning and memory ability of rats with AD， and its mechanism may be related to the regulation of the activities of GSK-3β and PP2A protein-related sites and the phosphorylation of tau protein.
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Objective@#The current situation and associated factors of primary and middle school students screen time and related eye hygiene in different periods before and after COVID-19 were investigated, so as to provide a scientific basis for taking targeted measures of preventing and controlling myopia among those students.@*Methods@#A total of 11 402 students were selected from 24 primary schools, 18 junior high schools and 16 high schools by multi stage stratified cluster sampling method. And a questionnaire survey was conducted among students and their parents to understand students screen time and screen hygiene behaviors and related factors in different periods before and after the outbreak of COVID-19.@*Results@#The rate of screen overuse was 7.26%, 9.12% and 35.30% during school days, weekends and home study, respectively. The overuse rate of mobile phones and tablets at home increases with the increase of school stage. Totally 16.30% of students use mobile phones for online learning. The screen overuse rate of those who have not been diagnosed with myopia was lower than that of those who have been diagnosed during home study( OR=0.77, P <0.05). The higher the parents educational level was, the lower the screen overuse rate of children during the weekends became( P <0.05). In any period, the high proportion of screens used in homework and poor home screen eye environment increased the risk of screen overuse and poor eye hygiene ( P <0.05). Parental good behavior was conducive to reducing the risk( OR= 0.65-0.97, P <0.05). When the family had regulation on the screen use time, the implementation of laxity would increase the risk of screen overuse ( OR=1.18-2.48, P <0.05).@*Conclusion@#The screen overuse rate of urban primary and middle school students during home study is high, and a certain proportion of students still use mobile phones for online learning. The proportion of screens used in homework, home screen eye environment and screen use management are related to screens overuse. More attention should be paid to those with myopia and low educational level of parents.
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Objective@#To development teacher health literacy on students visual protection questionnaire for kindergarten, primary and middle schools, and to provide a basis for quantitative assessment of visual protection health literacy of school teachers.@*Methods@#Based on official documents related to prevention and control of myopia as well as the integrated definition of health literacy of WHO Europe, the framework for technical evaluation was established. Totally 24 multi disciplinary experts in related fields conducted two round Delphi expert consultation. Evaluation items, questions and corresponding weights were determined based on experts opinions and scores.@*Results@#In two rounds of Delphi consultation, the response rates were 83.3% and 79.2% respectively, and the authority coefficient was 0.91. The final questionnaire was composed by dimensions of core knowledge of myopia, daily instruction, guidance for myopic behaviors, promotion of outdoor activities, and creation of teaching light environment, including 30 and 23 items for middle and primary school teachers and kindergarten teachers respectively. The coefficient of variation ( CV ) of the five dimensions ranged from 0.07 to 0.15, and that of each question ranged from 0.08 to 0.29. Expert opinions were accordant and credible.@*Conclusion@#A reliable questionnaire of teacher health literacy on students visual protection health literacy for school teachers is established, which can be used as the entry point and effectiveness evaluation basis for the school based intervention of myopia.
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Objective:To explore the effect of narrative nursing plan on patients with cancer fatalism at the initial stage of radiotherapy for nasopharyngeal carcinoma.Methods:Convenience sampling was used to select 126 patients with nasopharyngeal carcinoma who were admitted to the Third Ward of Radiotherapy, Affiliated Tumor Hospital of Guangxi Medical University from July 2019 to June 2020 with cancer fatalism at the initial stage of radiotherapy. Among them, 62 cases from July to December 2019 were set as the control group, and 64 cases from January to June 2020 were set as the observation group. Routine nursing intervention and narrative nursing intervention were given respectively, and before the intervention (the second day after admission), after 7 weeks of intervention, the Fatalism Scale and Center for Epidemiologic Studies-Depression scale scores of the two groups were compared.Results:Before the intervention, the cancer fatalism and depression scores of the two groups were at a high level and the difference was not statistically significant ( P>0.05); after the implementation of the narrative nursing intervention program, the cancer fatalism and depression scores of the observation group were (37.23±6.12), (9.42±1.36) points, lower than (47.78±9.14), (15.65±2.03) points of the control group. There was statistical significance ( t values were 7.698, 7.524, P<0.05). Conclusion:In the early stage of radiotherapy, patients with nasopharyngeal carcinoma have a strong concept of cancer fatalism, and narrative nursing intervention can effectively reduce their cancer fatalism and depression.
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Sunhe Community Health Service Center is the member of medical partnership of China-Japan Friendship Hospital. According to the real needs of local patients, the center started hemodialysis service on January 2017 with the help of superior partnership hospital. The responsible doctor from the China-Japan Friendship Hospital provided assistance in staff training, facility construction, technical guidance and clinical supervision; and the superior hospital also offered a green channel for patients` referral from the community center. Since starting hemodialysis service with this model, 73 local patients received total 16 768 hemodialyses up to January 2020. During this period 82 patient/times were transferred to superior hospital due to vascular access dysfunction, secondary hyperparathyroidism and other conditions, and referred back after appropriate treatment. This cooperative model makes full use of medical resources and expands the service scope of community health service centers; provides easy access for local chronic renal failure patients, and also improves the clinical capacity of primary care medical staff with sense of professional honor.
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Objective To evaluate the effect of community management of diabetic patients with hypertension in Beijing Cuigezhuang community in last three years.Methods A community diabetic management program was started from 2007 in Beijing Cuigezhuang community.Three hundred and seventy six patients who participated in the program for more than 3 years were enrolled in the study, including 196 with type 2 diabetes mellitus (T2DM) only (DM group) and 180 with T2DM and hypertension (DMH). The control rate of blood glucose, blood pressure, lipids and the comprehensive control rate were compared between two groups after 3-year intervention.Results There were no significant differences in age, gender ratio, course of diabetes, education background, monthly income and the history of stoke between two groups;while prevalence of dyslipidemia in DMH group was significantly higher than that in DM group [41.7%(75/180) vs.24.5%(48 196),χ2 =11.938,P=0.001].Compared with the baseline data, the types of antidiabetic drugs used were not significantly changed in two groups after 3-year intervention ( DM group:1.32 ±0.81 vs.1.31 ±0.93, t=-0.155, P=0.877, DMH group:1.43 ±0.72 vs.1.48 ±0.82, t=0,831, P =0.407) .The types of antihypertensive drug in DMH group were significantly decrease. (1.12 ±0.77 vs.1.25 ±0.45, t=2.484, P=0.014), while the rate of statins usage in DM group was significantly increased [13.3%(26/196) vs.5.1%(10/196),χ2 =7.830, P=0.005].The hemoglobin A1c (HbA1c) levels in DM group was decreased [(7.4 ±1.5)% vs.(7.8 ±2.1)%, t=2.586, P=0.011].The systolic pressure [(129 ±12) mmHg (1 mmHg=0.133 kPa) vs.(133 ±16) mmHg, t=3.503, P=0.001] and the diastolic pressure [(80 ±8) mmHg ratio (82 ±10) mmHg, t=2.436, P=0.016] in DMH group were significantly declined. The average LDL-C level [ DM group: ( 3.0 ± 0.9) mmol/L vs.(3.2 ±1.0) mmol/L, t =2.165, P=0.032; DMH group (2.9 ±1.0) mmol/L vs. (3.2 ±1.1) mmol/L, t=3.210, P=0.002] were also significantly decrease.Compared with the baseline, the comprehensive control rates of blood glucose, blood pressure and lipid level were increased in both groups [DM group:9.7% (19/196) vs.6.1%(12/196),χ2 =1.716, P=0.190, DMH group 13.9%(25/180) vs.5.0%(9/180),χ2 =8.315, P =0.004] .Conclusions The community management program is effective for improvement of comprehensive control rates of blood glucose, blood pressure and blood lipids in diabetic patients with hypertension in Beijing Cuigezhuang community.