Objective:To observe the changes of lung function and inflammatory factors in rat models of coal workers' pneumoconiosis at different time points.Methods:In June 2021, 96 healthy male SD rats with SPF grade were divided into 1, 3, and 6-month control group and dust staining group (coal dust group, coal silica dust group, quartz group) according to random number table method, with 8 rats in each group. After one week of adaptive feeding, a one-time non-exposed tracheal perfusion method (1 ml/ piece) was used. The dust dyeing group was given 50 g/L coal dust, coal silica mixed dust and quartz dust suspension, respectively, and the control group was given 0.9% normal saline solution. At 1, 3 and 6 months after perfusion, lung function was detected by animal lung function apparatus, then all lung tissues and alveolar lavage fluid were killed, and lung histopathological morphological changes were observed by HE staining, and the contents of interleukin (IL-1β), IL-18, IL-4 and IL-10 in alveolar lavage fluid were detected by ELISA. One-way analysis of variance was used to compare groups. Two factors (inter-group treatment factor (4 levels) and observation time factor (3 levels) ) were used in the analysis of the effects of inter-group treatment and treatment time on related indicators.Results:HE staining results showed that coal spot appeared in the lung tissue of coal dust group, coal spot and coal silicon nodule appeared in the lung tissue of coal dust group, and silicon nodule appeared in the lung tissue of quartz group. Compared with the control group, the forced vital capacity (FVC) and forced expiratory volume at 0.2 second (FEV 0.2) of rats in the dust staining group had interaction between the treatment and treatment time ( P<0.05). With the increase of dust dyeing time, FVC and FEV 0.2 decreased significantly at 3-6 months of dust dyeing, and the maximum gas volume per minute (MVV) decreased significantly at 1-3 months of dust dyeing ( P<0.05). The lowest lung function index was in quartz group, followed by coal-silica group and coal-dust group. There were statistically significant differences in the main effect and interaction effect of the pro-inflammatory factor IL-18 among all groups in treatment and treatment time (IL-18: F=70.79, 45.97, 5.90, P<0.001), and interaction existed. The highest content of inflammatory factors in alveolar lavage fluid of all dust groups was quartz group, followed by coal silica group and coal dust group. There were significant differences in the main effect and interaction effect of anti-inflammatory factors between groups and treatment time (IL-4: F=41.55, 33.01, 5.23, P<0.001, <0.001, <0.001; IL-10: F=7.46, 20.80, 2.91, P=0.002, <0.001, 0.024), and there was interaction. The highest content of anti-inflammatory factor was in quartz group, followed by coal silica group and coal dust group. Conclusion:Lung function decreased and levels of inflammatory fators increased in rat models of coal workers' pneumoconiosis, with the quartz group being the most severely damaged. Lung function is mainly impaired in thrid-six months, and the content of inflammatory factors begins to change in first-thrid months. MVV are the earliest and most obvious in lung function. IL-18 is suitable for monitoring changes in the pro-inflammatory response of coal workers' pneumoconiosis, and IL-10 is suitable for monitoring changes in anti-inflammatory response.

Objective:To observe the changes of lung function and inflammatory factors in rat models of coal workers' pneumoconiosis at different time points.Methods:In June 2021, 96 healthy male SD rats with SPF grade were divided into 1, 3, and 6-month control group and dust staining group (coal dust group, coal silica dust group, quartz group) according to random number table method, with 8 rats in each group. After one week of adaptive feeding, a one-time non-exposed tracheal perfusion method (1 ml/ piece) was used. The dust dyeing group was given 50 g/L coal dust, coal silica mixed dust and quartz dust suspension, respectively, and the control group was given 0.9% normal saline solution. At 1, 3 and 6 months after perfusion, lung function was detected by animal lung function apparatus, then all lung tissues and alveolar lavage fluid were killed, and lung histopathological morphological changes were observed by HE staining, and the contents of interleukin (IL-1β), IL-18, IL-4 and IL-10 in alveolar lavage fluid were detected by ELISA. One-way analysis of variance was used to compare groups. Two factors (inter-group treatment factor (4 levels) and observation time factor (3 levels) ) were used in the analysis of the effects of inter-group treatment and treatment time on related indicators.Results:HE staining results showed that coal spot appeared in the lung tissue of coal dust group, coal spot and coal silicon nodule appeared in the lung tissue of coal dust group, and silicon nodule appeared in the lung tissue of quartz group. Compared with the control group, the forced vital capacity (FVC) and forced expiratory volume at 0.2 second (FEV 0.2) of rats in the dust staining group had interaction between the treatment and treatment time ( P<0.05). With the increase of dust dyeing time, FVC and FEV 0.2 decreased significantly at 3-6 months of dust dyeing, and the maximum gas volume per minute (MVV) decreased significantly at 1-3 months of dust dyeing ( P<0.05). The lowest lung function index was in quartz group, followed by coal-silica group and coal-dust group. There were statistically significant differences in the main effect and interaction effect of the pro-inflammatory factor IL-18 among all groups in treatment and treatment time (IL-18: F=70.79, 45.97, 5.90, P<0.001), and interaction existed. The highest content of inflammatory factors in alveolar lavage fluid of all dust groups was quartz group, followed by coal silica group and coal dust group. There were significant differences in the main effect and interaction effect of anti-inflammatory factors between groups and treatment time (IL-4: F=41.55, 33.01, 5.23, P<0.001, <0.001, <0.001; IL-10: F=7.46, 20.80, 2.91, P=0.002, <0.001, 0.024), and there was interaction. The highest content of anti-inflammatory factor was in quartz group, followed by coal silica group and coal dust group. Conclusion:Lung function decreased and levels of inflammatory fators increased in rat models of coal workers' pneumoconiosis, with the quartz group being the most severely damaged. Lung function is mainly impaired in thrid-six months, and the content of inflammatory factors begins to change in first-thrid months. MVV are the earliest and most obvious in lung function. IL-18 is suitable for monitoring changes in the pro-inflammatory response of coal workers' pneumoconiosis, and IL-10 is suitable for monitoring changes in anti-inflammatory response.

Background/Aims: Low educational attainment is a well-established risk factor for nonalcoholic fatty liver disease (NAFLD) in developed areas. However, the association between educational attainment and the risk of NAFLD is less clear in China. Methods: A cross-sectional study including over 200,000 Chinese adults across mainland China was conducted. Information on education level and lifestyle factors were obtained through standard questionnaires, while NAFLD and advanced fibrosis were diagnosed using validated formulas. Outcomes included the risk of NAFLD in the general population and high probability of fibrosis among patients with NAFLD. Logistic regression analysis was employed to estimate the risk of NAFLD and fibrosis across education levels. A causal mediation model was used to explore the potential mediators. Results: Comparing with those receiving primary school education, the multi-adjusted odds ratios (95% confidence intervals) for NAFLD were 1.28 (1.16 to 1.41) for men and 0.94 (0.89 to 0.99) for women with college education after accounting for body mass index. When considering waist circumference, the odds ratios (95% CIs) were 0.94 (0.86 to 1.04) for men and 0.88 (0.80 to 0.97) for women, respectively. The proportions mediated by general and central obesity were 51.00% and 68.04% for men, while for women the proportions were 48.58% and 32.58%, respectively. Furthermore, NAFLD patients with lower educational attainment showed an incremental increased risk of advanced fibrosis in both genders. Conclusions In China, a low education level was associated with a higher risk of prevalent NAFLD in women, as well as high probability of fibrosis in both genders.

Background Aluminum activates signal transducer and activator of transcription 3 (STAT3), causing microglial nucleotide-binding and oligomerization domain-like receptors protein 3 (NLRP3) inflammasome activation and inflammatory responses and producing neurotoxicity. Objective To explore the role of STAT3 regulated NLRP3 inflammasomes in the inflammatory response of mouse microglia cell line (BV2) cells induced by maltol aluminum [Al(mal)₃]. Methods BV2 cells were assigned to five groups: one control group, three Al(mal)₃ exposure groups (low, medium, and high doses at 40, 80, and 160 μmol·L⁻¹ Al(mal)₃ respectively), and one C188-9 (STAT3 antagonist) intervention group [10 μmol·L⁻¹ C188-9 +160 μmol·L⁻¹ Al(mal)₃]. Cell viability was detected by CCK8. The expression of M1/M2 type markers, i.e. CD68/CD206, STAT3, p-STAT3, NLRP3, cleaved-casepase-1, and apoptosis-associated speck-like protein (ASC) in BV2 cells were detected by Western blotting, and proinflammatory cytokines interleukin (IL)-1β and IL-18, and anti-inflammatory cytokine IL-10 were determined by ELISA. Results The results of cell viability assay showed that cell viability gradually decreased with the increase of Al(mal)₃ dose. Compared with the control group, the cell viability of the Al(mal)₃ high-dose group was decreased by 18% (P<0.05); compared with the Al(mal)₃ high-dose group, the cell viability of the C188-9 intervention group was significantly elevated by 14% (P<0.05). Compared with the control group, the expression levels of CD68 in the Al(mal)₃ low-, medium-, and high-dose groups were elevated by 19%, 20%, and 21%, respectively (P<0.05); the expression level of CD206 in the Al(mal)₃ high-dose group was decreased by 25% (P<0.05). Compared with the Al(mal)₃ high-dose group, the expression level of CD68 in the C188-9 intervention group was reduced by 9% (P<0.05), whereas the expression level of CD206 was elevated by 22% (P<0.05). Compared with the control group, the p-STAT3 protein expression and the p-STAT3/STAT3 ratio in the Al(mal)₃ high-dose group increased by 129% and 127%, respectively (P<0.05). Compared with the Al(mal)₃ high-dose group, the p-STAT3 protein expression and the p-STAT3/STAT3 ratio in the C188-9 intervention group were decreased by 55% and 54%, respectively (P>0.05). Compared with the control group, the expression level of NLRP3 protein increased by 75% in the Al(mal)₃ high-dose group (P<0.05), the expression levels of cleaved-casepase-1 protein increased by 28% and 35% in the Al(mal)₃ medium- and high-dose groups (P<0.05), and the expression levels of ASC increased by 22%, 25%, and 53% in the Al(mal)₃ low-, medium- and high-dose groups (P<0.05), respectively. Compared with the Al(mal)₃ high-dose group, the expression levels of NLRP3, cleaved-casepase-1, and ASC proteins in the C188-9 intervention group decreased by 30%, 19%, and 32%, respectively (P<0.05). Compared with the control group, the levels of IL-1β in the Al(mal)₃ medium- and high-dose groups increased by 18% and 21%, respectively (P<0.05), and the level of IL-18 in the Al(mal)₃ high-dose group increased by 10% (P<0.05). Compared with the Al(mal)₃ high-dose group, the IL-18 levels were reduced by 23% in the C188-9 intervention group (P<0.05). The content of anti-inflammatory factor IL-10 did not differ significantly between groups (P>0.05). Conclusion Aluminum can induce inflammatory responses in BV2 microglia and is predominantly pro-inflammatory, and the mechanism may involve STAT3 regulation of NLRP3 inflammasome secretion of inflammatory factors.

Objective To construct the rapid training program for auxiliary rescue personnel within the restricted area after major disasters,and to provide references for disaster rescue in China.Methods Based on literature review and group discussion,two rounds of consultation with experts using Delphi method were conducted to construct the rapid training program for post-disaster auxiliary rescue personnel.Results The authority coefficients of two rounds of consultations were 0.81 and 0.82,and the coordination coefficients ranged from 0.272 to 0.460.Conclusion Experts had consistent opinions on items of each level for the rapid training program for post-disaster auxiliary rescue personnel.Experts had high levels of enthusiasm and authority,and the rapid training program can meet training requirements for post-disaster auxiliary rescue personnel,and provide references for efficient rescue after major disasters in China.

Objective To design a questionnaire to explore nursing care behavior demand from patients'vision, and verify its reliability and validity. Methods The nursing care behavior index entry pool were summed up through literature analysis and discussion, and then a questionnaire containing 40 items was designed through per-investigation. A total of 150 patients from 30 departments in general hospital of Shenyang military region were selected for questionnaire survey using the convenience sampling method. The SPSS 19.0 was used to test the reliability and validity. Results Totally 149 effective questionnaires were recycled. Finally the questionnaires contained 6 dimensions and 35 items. Six factors were extracted with exploratory factor analysis, which explained 57.976% variance respectively. Total questionnaire Cronbach alpha coefficient was 0.892, the dimension Cronbach alpha coefficient was 0.747-0.914; Total remeasuring reliability was 0.824, the remeasuring reliability was 0.733-0.867. Binary validity was 0.806, binary coefficient was 0.748-0.872. Conclusions This study scientifically and reliably built a nursing care behavior demand questionnaire from patients′vision, which can be used to survey patients′satisfaction on nursing humanities.

OBJECTIVE:To compare the efficacy and safety of Leonurus artemisia cream and Dan’e fukang cream in the treat-ment of primary dysmenorrhea. METHODS:80 patients with primary dysmenorrheal were randomly divided into L. artemisia cream group (40 cases) and Dan’e fukang cream group (40 cases). L. artemisia cream group received L. artemisia cream 10 g, orally,twice a day. Dan’e fukang cream group received Dan’e fukang cream 10 g,orally,twice a day. The treatment was stated before 10 days of menstruation. 10 days was regarded as 1 treatment course,and it lasted for 6 courses. Cold drink and food were forbid during medication,washing face and feet with warm water,soaking feet with hot water if they can,paying attention to keep the lower abdomen and legs warm. If patients felt unbearable pain in menstruation,0.3 g Ibuprofen sustained release capsule was given,orally twice a day. Clinical efficacy,symptom score(dysmenorrhea degree,abdominal pain,lumbosacral pain)before and af-ter treatment,dysmenorrhea duration,frequency of taking painkillers and the incidence of adverse reactions in 2 groups were ob-served. RESULTS:There were no significant differences in the total effective rate and the incidence of adverse reactions in 2 groups (P>0.05). Before treatment,there were no significant differences in dysmenorrhea degree,abdominal pain,lumbosacral pain score,dysmenorrheal duration and frequency of taking painkillers in 2 groups (P>0.05). After treatment,the dysmenorrhea degree,abdominal pain,lumbosacral pain score in 2 groups were significantly lower than before,and Dan’e fukang cream group was lower than L. artemisia cream group with statistical sighificance(P<0.05),and dysmenorrheal duration and frequency of taking painkillers were significantly lower than before,with statistical significance(P<0.05),while there was no significant difference in 2 groups(P>0.05). CONCLUSIONS:Both L. artemisia cream and Dan’e fukang cream have good efficacy and safety in the treat-ment of primary dysmenorrhea,while Dan’e fukang cream is superior to L. artemisia cream in terms of improving clinical symp-toms.

BACKGROUND:Maxil ofacial malformation limits the function of the mandible, produces the overload of the temporalmandibular joint leading to oral diseases. OBJECTIVE:To measure the characteristics of mandibular movement in populations with various types of dental occlusion. METHODS:Thirty-three volunteers (1 male and 32 females, mean age 21.71 years) meeting the inclusion criteria were enrol ed from Dalian Medical University, China and divided into four groups:normal control (n=10), Angle’s class I, II, III malocclusion (n=10, 8, 5). The protrusion, lateral, opening motion trace of mandibular central incisor and the right mandibular first molar, and the trace from mandibular postural position to intercuspal position were measured using the mandibular kinesiograph. The features of different occlusal patterns were analyzed using SPSS 17.0 software. RESULTS AND CONCLUSION:In the trace of protrusion, lateral, opening and closing motion, there were significant differences in the trace of the right mandibular first molar’s Max.Slant between Angle’s class II malocclusion group and the other three groups (P<0.05). In the trace of open wide and close fast, there were significant differences in the trace of mandibular central incisor in vertical distances between normal control group and Angle’s class I, III malocclusion groups (P<0.05);there were significant differences in the trace of mandibular central incisor in Max.Slant between normal control group and Angle’s class I malocclusion group (P<0.05);there were significant differences in the trace of the right mandibular first molar in vertical distances between Angle’s class II malocclusion group and the other three groups (P<0.05);there were significant differences in the trace of the right mandibular first molar in Max.Opening velocity between normal control group and Angle’s class II, III malocclusion groups (P<0.05). There were no significant differences in free space between the four groups (P>0.05). These results indicate that there are differences in the trace of mandibular central incisor and the trace of the right mandibular first molar in range and speed between different occlusal patterns. We can draw a conclusion that malocclusion has effects on the direction, range and speed of mandibular movement.

Objective To investigate the characteristics of the diagnosis and treatment center for Ebola observing ward and reduce infection risk according to allocation scheduling method of nursing staff. To provide reference for other similar tasks. Methods We used the method of grouping fixed group scheduling method and fixed working hours to identify and refine the content of nursing work. Results A total of 65 cases of suspected Ebola including 5 cases diagnosed as EVD patients were cured. No case of infection occurred in nursing staff. Conclusions During the infectious disease nursing work, reasonable personnel allocation and scheduling method can make the nursing staff work with full energy and strength and ensure the realization ofzero infectiontargets.