Objective:To analyze the policy tools designed for function orientation and development of China′s infectious disease hospitals, in order to provide references for formulating and optimizing the functional implementation and sustainable development policies of these hospitals.Methods:Consulting the website of Peking University Law and official websites on health, and using such keywords as " medical institutions, infectious diseases, hospitals for infectious diseases, public health emergencies, specialized hospitals", and searching the national policy texts on the functions and development of infectious disease hospitals issued from December 1991 to January 2023. By means of Rothwell and Zegveld′s policy tool classification method, Nvivo 11 Pro software was used to analyze the text content from the dimensions of demand-type, supply-type, and environmental-type policy tools.Results:A total of 41 policy texts were included and 204 codes were obtained through text analysis. Of all the tools, environmental and supply-oriented policy tools were used the most, being 104 (50.99%) and 95 (46.56%) respectively, while demand-oriented policy tools were used the least, only 5 (2.45%). Of all the environmental-oriented policy tools, " goal planning" was the most used, being 34 (16.67%), while " publicity and guidance" was less used, only 4 (1.96%). Among the supply-oriented policy tools, " clarifying the reporting and handling service functions of public health emergencies" was the most widely used, being 34 (16.67%), while " Informationization" and " infrastructure construction" was less used, being 8 (3.92%) and 6 (2.94%) respectively. Few of the demand-oriented policy tools were in use, as " government purchase" and " medical insurance support" were both 2 (0.98% each), and " social medical care" was only 1 (0.49%).Conclusions:The distribution of three types of policy tools for function and development of infectious disease hospitals is unbalanced, the use of environmental and supply-oriented policy tools is excessive and internal structure is unbalanced. The proportion of environmental-oriented policy tools needs to be adjusted, and the frequency of use of supporting tools such as relevant standards, norms, incentives, supervision and publicity should be increased. Supply-oriented policies need to be further optimized, especially in terms of personnel training, funding, information technology and infrastructure construction. Demand-oriented policy tools are seriously underused and need to be further developed.

Objective:To explore the application effect of the teaching ward-round workshop on the teaching ability training for clinical teachers.Methods:From July to October 2019, 83 clinical teachers from The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University included in the study were divided into 8 groups for the training of teaching ward-round workshop. After the training, the evaluation results of clinical teaching ward-round, the satisfaction of clinical teaching ward-round, and the satisfaction of the workshop teaching model were compared. Chi-square test and t test were performed by SPSS 22.0. Results:The trainees were highly satisfied with the training mode of the teaching ward-round workshop. After the training, the clinical teaching ward-round assessment scores [(96.83±1.77) points] were higher than the average scores of the same period from April to June in 2019 [(91.25±2.86) points], with statistical significance ( P<0.05). In terms of satisfaction with clinical teaching ward rounds, the scores of 7 dimensions including preparation before ward rounds, highlighting the key and difficulties, and standard physical examination after the training were all higher than those before the training, with significant differences ( P<0.05). Conclusion:The training model of the teaching ward-round workshop helps to enhance the training effect, promote the teaching ability of clinical teachers, and improve the clinical teaching ward-round assessment results and satisfaction, which provides new ideas and references for the training of clinical medical professionals.

Objective:To analyze the risk factors of bronchopulmonary dysplasia(BPD)in very preterm infants(VPI), and to provide scientific basis for the prevention and treatment of BPD in VPI.Methods:A prospective multicenter study was designed to collect the clinical data of VPI in department of neonatology of 28 hospitals in 7 regions from September 2019 to December 2020.According to the continuous oxygen dependence at 28 days after birth, VPI were divided into non BPD group and BPD group, and the risk factors of BPD in VPI were analyzed.Results:A total of 2 514 cases of VPI including 1 364 cases without BPD and 1 150 cases with BPD were enrolled.The incidence of BPD was 45.7%.The smaller the gestational age and weight, the higher the incidence of BPD( P<0.001). Compared with non BPD group, the average birth age, weight and cesarean section rate in BPD group were lower, and the incidence of male infants, small for gestational age and 5-minute apgar score≤7 were higher( P<0.01). In BPD group, the incidences of neonatal respiratory distress syndrome(NRDS), hemodynamically significant patent ductus arteriosus, retinopathy of prematurity, feeding intolerance, extrauterine growth restriction, grade Ⅲ~Ⅳ intracranial hemorrhage, anemia, early-onset and late-onset sepsis, nosocomial infection, parenteral nutrition-associated cholestasis were higher( P<0.05), the use of pulmonary surfactant(PS), postnatal hormone exposure, anemia and blood transfusion were also higher, and the time of invasive and non-invasive mechanical ventilation, oxygen use and total hospital stay were longer( P<0.001). The time of starting enteral nutrition, cumulative fasting days, days of reaching total enteral nutrition, days of continuous parenteral nutrition, days of reaching 110 kcal/(kg·d) total calorie, days of reaching 110 kcal/(kg·d) oral calorie were longer and the breastfeeding rate was lower in BPD group than those in non BPD group( P<0.001). The cumulative doses of amino acid and fat emulsion during the first week of hospitalization were higher in BPD group( P<0.001). Multivariate Logistic regression analysis showed that NRDS, invasive mechanical ventilation, age of reaching total enteral nutrition, anemia and blood transfusion were the independent risk factors for BPD in VPI, and older gestational age was the protective factor for BPD. Conclusion:Strengthening perinatal management, avoiding premature delivery and severe NRDS, shortening the time of invasive mechanical ventilation, paying attention to enteral nutrition management, reaching whole intestinal feeding as soon as possible, and strictly mastering the indications of blood transfusion are very important to reduce the incidence of BPD in VPI.

The vagina contains at least a billion microbial cells,dominated by lactobacilli.Here we perform metagenomic shotgun sequencing on cervical and fecal samples from a cohort of 516 Chinese women of reproductive age,as well as cervical,fecal,and salivary samples from a second cohort of 632 women.Factors such as pregnancy history,delivery history,cesarean section,and breastfeeding were all more important than menstrual cycle in shaping the microbiome,and such information would be necessary before trying to interpret differences between vagino-cervical micro-biome data.Greater proportion of Bifidobacterium breve was seen with older age at sexual debut.The relative abundance of lactobacilli especially Lactobacillus crispatus was negatively associated with pregnancy history.Potential markers for lack of menstrual regularity,heavy flow,dysmenor-rhea,and contraceptives were also identified.Lactobacilli were rare during breastfeeding or post-menopause.Other features such as mood fluctuations and facial speckles could potentially be predicted from the vagino-cervical microbiome.Gut and salivary microbiomes,plasma vitamins,metals,amino acids,and hormones showed associations with the vagino-cervical microbiome.Our results offer an unprecedented glimpse into the microbiota of the female reproductive tract and call for international collaborations to better understand its long-term health impact other than in the settings of infection or pre-term birth.

Objective To investigate the significance of fibroblast growth factor 23 in metabolic bone disease of prematuriy.Methods 60 patients who had been treated in our hospital from March 2016 to March 2017 were included in this study.Blood biochemistry was examined two weeks after birth,and values of blood phosphorus, serum calcium and alkaline phosphatase were recorded. Serum levels of 25 hydroxyvitamin D3,parathyroid hormone and fibroblast growth factor 23 were detected two weeks after birth. 20 premature infants with metabolic bone disease were selected as a study group. 40 infants without metabolic bone disease were treated as a control group. Two weeks after treatment,the above indicators were measured and compared in the study group. Results Serum levels of 25 hydroxyvitamin D3,parathyroid hormone and fibroblast growth factor 23 were compared between the two groups 2 weeks after birth,the difference was statistically significant(P<0.05).Levels of serum parathyroid hormone and fibroblast growth factor 23 in the study group were not statistically significant after treat-ment(P > 0.05). Levels of 25 hydroxy vitamin D3 in the study group had statistically significant after treatment (P<0.05).Conclusions Early detection of fibroblast growth factor 23 can reflect metabolic bone disease in pre-term infants.It suggests that vitamin D should be adequately supplemented in early.

Objective The aim of this study was to investigate the mechanism underlying pruritus by comparing the epidermal growth factor receptor inhibitor(EGFRI)-erlotinib mouse model with the substance P(SP)-induced pruritus mouse model. Methods Two randomized groups of mice were treated with erlotinib or SP to induce pruritus. Behavioral and skin manifestations were observed. Pathological images and neurokinin 1 receptor(NK-1R)expression of the skin were determined. Concentration of interleukin(IL)-31, IL-33, histamine, leukotriene B4, and SP was analyzed by enzyme-linked immunosorbent assay. Nitric oxide was analyzed by colorimetry. Results Transient pruritus induced by erlotinib appeared 2 to 5 days after treatment. In contrast, continuous pruritus was observed during the first hour, but was then gradually relieved. These two shared similar scratching behavior. Concentration of neurotransmitters showed similar trends in changes among the erlotinib group and SP group. Immunohistochemical expression was also consistent between the erlotinib group and SP group. Conclusions Erlotinib-associated pruritus is related to release of signaling factors through the SP/NK-1R signaling pathway.

Objective To explore the application of fuzzy mathematics theory in the evaluation of medical students' comprehensive mental quality. Methods A total of 80 medical undergraduates studying in the Affiliated Huai'an No.1 People’s Hospital of Nanjing Medical University from October to December 2017 were randomly selected to conduct a questionnaire survey on medical students' mental quality. The questionnaires were designed by the study group, containing 3 first-level items (learning pressure, life stress and interpersonal stress), and 19 secondary items, with the recovery rate as 95%. Fuzzy comprehensive evaluation method was used for data processing and analysis. Results By comparing the data obtained from the comprehensive evaluation of the secondary factors with those of the pre-set evaluation set, the study concluded that 25.00% of the medical students need to adjust the future pressure, 41.70% the family health status pressure and 26.79% the appearance pressure according to the principle of maximum mem-bership degree. The comprehensive evaluation of the first four factors (0.249 7, 0.268 9, 0.270 2, and 0.211 2) showed that the comprehensive mental quality of medical students was "good". The quantitative analysis results showed that 27.02% of the medical students had good comprehensive mental quality, 24.97% need the mental quality adjustments, 26.89% had the average mental quality, and 21.12% had outstanding mental quality. Fuzzy comprehensive evaluation indicated that it is necessary to adjust the learning pressure and life stress of medical students, while the interpersonal stress had little effect on the mental quality of medical students. Conclusion The fuzzy comprehensive evaluation adopts the quantitative method to deal with the qualitative indicators uniformly, being scientific and reasonable. The corresponding data of each indicator can be easily identified with the help of the indicator system built up in the evaluation, which provides evidence for distinguishing and improving the corresponding decision-making for improving the medical students' mental quality. This evaluation method has strong applicability and provides new methods and ideas for objectively evaluating the comprehensive mental quality of medical students.

Objective To investigate the effects of curcumin on myosin light chain kinase(MLCK)in the intestinal mucosa of rats with nonalcoholic fatty liver disease(NAFLD). Methods 35 SD rats were randomly di-vided into the normal control group ,the high fat group and the curcumin group. The high fat group ,curcumin group were given high fat diet for 16 weeks. After 8 weeks of high fat feeding in the curcumin group ,the rats were gavaged with 200 mg/(kg·d)curcumin for 8 weeks. The levels of ALT,AST,LPS and DAO in blood and expres-sion of MLCK in the intestinal mucosa were detected. The changes of liver pathology and tight junction(TJ)of the intestinal mucosa were observed. Results Compared with the control group,the blood levels of ALT,AST,LPS and DAO in the high fat group were obviously increased(P<0.05);Compared with the high fat group,the blood levels of ALT、AST、LPS and DAO in the curcumin group were obviously decreased (P < 0.05). In the high fat group ,hepatocellular steatosis was obvious ,while in the curcumin group hepatocellular steatosis was decreased. TJ was disrupted in the high fat group ,and the intercellular space was larger in the TJ group than the control group (P<0.05). The intercellular space was narrower in the curcumin group than the high fat group(P<0.05). The expression of MLCK in the high fat group was significant higher than that in the control group(P<0.05). The pos-itive staining in the curcumin group was significant lower than that in the high fat group (P < 0.05). Conclusion Curcumin can ameliorate hepatic steatosis by downregulating expression of MLCK in the intestinal mucosa of rats with NAFLD,improving TJ structure of the intestinal mucosa.

Objective To investigate the role of mylin basic protein,S100B and arterial blood gas analysis's levels in early diagnosis of brain injury in premature infant.Methods A total of 95 premature infants treated in our hospital were enrolled in the study.Experimental group was 45 premature infants with brain injury.Control group was 50 premature infants without brain injury were the.All patients were detected with arterial blood gas analysis,MBP and S100B on the 1st day and 7th day after birth.Results The pH,PCO2,BE,lactic acid,MBP and S100B's levels in experimental group were significantly different between the 1st day and 7th day after birth.In the 1st day after birth,compared with the control group,the pH,PCO2,BE,lactic acid,MBP and S100B in the experimental group were obviously high than that of control group.Conclusion On the 1st day after birth,monitoring arterial blood gas analysis,S100B protein and MBP's levels could be useful in early diagnosis of brain injury in preterm infants.

Objective: To investigate the effect of curcumin on intestinal mucosal mechanical barrier in rats with non-alcoholic fatty liver disease. Methods: A total of 30 male Sprague-Dawley rats were equally divided into normal control group, model group, and curcumin intervention group. The rats in the model group and the curcumin intervention group were given high-fat feed for 16 weeks, and those in the curcumin intervention group were given curcumin 200 mg/kg/day by gavage once a day after 8 weeks of high-fat feeding. The rats were sacrificed at the end of week 16. A light microscope was used to observe pathological changes in the liver, an electron microscope was used to observe the tight junction of the intestinal mucosa, an automatic biochemical analyzer was used to measure the serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST), chromogenic substrate Limulus amebocyte lysate assay was used to measure plasma lipopolysaccharide (LPS) level, spectrophotometric method was used to measure the activity of serum diamine oxidase, ELISA was used to measure the serum level of tumor necrosis factor-α (TNFα), and immunohistochemistry was used to measure the expression of the tight junction protein occludin. One-way ANOVA test and SNK-q test were used for statistical analysis. Results: Under the light microscope, the control group had no hepatocyte steatosis, the model group had significant hepatocyte steatosis and inflammatory cell infiltration, and the curcumin intervention group had reduced hepatocyte steatosis and inflammatory cell infiltration. Under the electron microscope, the control group had a clear and complete structure of the tight junction of the intestinal mucosa and normal structures of mitochondria and endoplasmic reticulum; in the model group, the structure of the tight junction of the intestinal mucosa was destroyed, the intercellular space was widened, the desmosomes had a loose structure, there was edema in some mitochondria, and the endoplasmic reticulum was dilated; the curcumin intervention group had improvements in the structure of tight junction of the intestinal mucosa, intercellular space, edema in the mitochondria, and dilation of the endoplasmic reticulum. Compared with the control group, the model group had significant increases in the serum levels of AST, ALT, DAO, TNFα, and LPS (q = -15.918, -14.402, -33.700, -8.944, and -10.832, P < 0.05); compared with the model group, the curcumin intervention group had significant reductions in the serum levels of AST, ALT, DAO, TNFα, and LPS (q = 10.457, 7.752, 18.802, 5.202, and 4.279, P < 0.05). In the control group, occludin showed a linear distribution along the top of small intestinal mucosal epithelial cells. The model group had a significant reduction in positive staining compared with the control group, and the curcumin intervention group had a significant increase in positive staining compared with the model group. The relative expression of occludin was 0.29±0.03 in the control group, 0.12±0.02 in the model group, and 0.21±0.02 in the curcumin intervention group (P < 0.05). Conclusion Intestinal mucosal mechanical barrier is impaired in rats with NAFLD. Curcumin can reduce such damage, and its mechanism of action may be related to up-regulating the expression of occludin in the intestinal mucosa and reducing the levels of TNFα and LPS.