This paper systematically summarizes the practical experience of the 2025 Dingri earthquake emergency medical rescue in Tibet. It analyzes the requirements for earthquake medical rescue under conditions of high-altitude hypoxia, low temperature, and low air pressure. The paper provides a detailed discussion on the strategic layout of earthquake medical rescue at the national level, local government level, and through social participation. It covers the construction of rescue organizational systems, technical systems, material support systems, and information systems. The importance of building rescue teams is emphasized. In high-altitude and cold conditions, rapid response, scientific decision-making, and multi-party collaboration are identified as key elements to enhance rescue efficiency. By optimizing rescue organizational structures, strengthening the development of new equipment, and promoting telemedicine technologies, the precision and effectiveness of medical rescue can be significantly improved, providing important references for future similar disaster rescues.

[摘 要] 目的：探究吲哚胺2，3-双加氧酶1（IDO1）在不同类型乳腺癌组织中的表达及其与患者预后和免疫细胞浸润的关系。方法：收集 TCGA 数据库中乳腺癌RNA测序数据和相应临床资料，分析IDO1 mRNA在不同亚型、不同分期、不同绝经阶段及不同年龄等各类型乳腺癌组织与癌旁组织中的表达差异。将IDO1 mRNA表达有明显差异的乳腺癌类型的患者分为IDO1高、低表达组，比较3组间的疾病特异性生存率（DSS），分析IDO1 mRNA在DSS有明显差异的癌组织中的表达水平与免疫细胞浸润的关系。采用免疫组化法检测IDO1蛋白在ER阴性、PR阴性、HER2阳性及Ⅱ期乳腺癌组织中的表达情况，对数据库数据进行验证。结果：IDO1 mRNA在乳腺癌组织中呈高表达，但在不同类型乳腺癌中的表达不同。IDO1 mRNA在ER阴性、PR阴性、HER2阳性、HER2阴性亚型、Ⅱ期、T2期、N0期和M0期分期、绝经前、绝经后和年龄≤ 60岁患者的乳腺癌组织中呈高表达（P < 0.05或P < 0.01或P < 0.001）。ER阴性、PR阴性、HER2阳性和Ⅱ期亚组中，IDO1 mRNA高表达患者的DSS明显高于低表达患者（P < 0.05或P < 0.01）。ER阴性、PR阴性、HER2阳性和Ⅱ期乳腺癌组织中IDO1 mRNA表达与活化的树突状细胞（aDC）、Th1细胞、T细胞、CD56dim NK细胞、CTL和Treg细胞等免疫细胞浸润有关联（均P < 0.001）。IDO1蛋白在ER阴性、PR阴性、HER2阳性及Ⅱ期乳腺癌组织中均呈高表达（均P < 0.001），与数据库数据分析结果一致。结论：IDO1在不同类型的乳腺癌组织中的表达不同，IDO1表达与ER阴性、PR阴性、HER2阳性和Ⅱ期乳腺癌患者的预后和免疫细胞浸润有关联。

Objective To explore the mediating role of activities of daily living (ADL) in pain and depressive symptoms in the elderly in China. Methods Utilizing the data from 2020 China Health and Retirement Longitudinal Study, 4403 Chinese elderly individuals aged ≥ 60 years old were selected as the research subjects. Depression Scale (CES-D 10) of the Center for Epidemiological Survey and ADL scale were used in the study. The PROCESS4.1 macro was used to test the mediating effect of daily living activities between pain and depressive symptoms, and the Bootstrap method was applied for verification of the mediating variables. Results A total of 2368 cases of depressive symptoms were detected in the elderly in China, with a detection rate of 53.78%. Pain was positively correlated with depressive symptoms (r=0.27, P<0.01), and activities of daily living were negatively correlated with pain and depressive symptoms (r=-0.27, -0.337, P<0.01). The results showed that the total effect value of pain on depressive symptoms was 0.33, the direct effect value was 0.24, and the mediating effect value of daily living activities was 0.09, accounting for 27.27%. Conclusion Pain and activities of daily living are important factors influencing depressive symptoms in the elderly, and activities of daily living play a partial mediating role in the relationship between pain and depressive symptoms in the elderly.

Objective To analyze the occurrence status and risk factors of frailty in elderly patients with heart failure (HF), and improve the prognosis of elderly patients with HF. Methods Totally 306 elderly patients with HF who received treatment in the hospital were selected from April 2021 to April 2024 as the study subjects. The occurrence of frailty was counted, and the patients were divided into frailty group and non-frailty group according to occurrence status of frailty. Univariate and logistic multivariate regression analyses were adopted to analyze the risk factors of frailty in elderly HF patients. Results Among the 306 patients, there were 92 cases of frailty, with an incidence rate of 30.07%. There were obvious differences in age, HF grading, nutritional status, negative emotions, left ventricular ejection fraction, hemoglobin and creatinine between groups (P<0.05). After logistic multivariate analysis, it was found that age≥70 years old, HF grading, malnutrition, negative emotions and creatinine were the high risk factors for frailty in elderly patients with HF, and left ventricular ejection fraction and hemoglobin level were the protective factors (OR: 1.662, 95%CI: 0.845-3.268; OR: 4.586, 95%CI: 2.318-9.071; OR: 3.971, 95%CI: 1.806-8.731; OR: 3.307, 95%CI: 1.457-7.503; OR: 0.456, 95%CI: 0.255-0.816; OR: 0.525, 95%CI: 1.156-0.967, P<0.05). Conclusion The risk of frailty is high in elderly patients with HF, and is affected by age, heart failure grading, nutritional status, negative emotions, left ventricular ejection fraction, hemoglobin and creatinine. Clinically, it is necessary to take prevention and intervention measures for such patients to reduce the occurrence of frailty.

Objective : To explore the polymorphism of endothelial nitric oxide synthase(eNOS) gene in umbilical cord blood of preterm infants and its relationship with major complications in preterm infants. Methods : A total of 254 preterm infants(<37 weeks) who were hospitalized were selected as the study subjects. Umbilical cord blood was collected at delivery to determine the genotypes and alleles of eNOS gene at three loci: rs61722009, rs2070744,and rs1799983. Clinical data of the preterm infants were recorded, and the relationship between eNOS gene polymorphism and major complications in preterm infants was analyzed. Results: (1) The TC+CC genotype at locus rs2070744 was an independent risk factor for bronchopulmonary dysplasia(BPD) in preterm infants, with an OR(95%CI) of 1.266(1.017-1.577).(2) The GT+TT genotype at locus rs1799983 was an independent risk factor for retinopathy prematurity(ROP), with an OR(95%CI) of 1.184(1.008-1.391).(3) The AB+AA genotype at locus rs61722009 was also an independent risk factor for ROP,with an OR(95%CI) of 1.335(1.033-1. 726).(4) There was no significant relationship between gene polymorphism and the occurrence of respiratory distress syndrome( RDS) and periventricular-intraventricular hemorrhage( PIVH). Conclusion eNOS gene polymorphism is associated with the occurrence of BPD and ROP in preterm infants. The evaluation of e NOS gene polymorphism by umbilical cord blood measurement is helpful for the prevention and correct management of some serious complications.

目的：探讨穿心莲内酯（Andro）调节脂肪酸合成酶（Fas）/脂肪酸合成酶配体（FasL）信号轴对子宫内膜癌Ishikawa细胞顺铂（DDP）耐药性的影响。方法：采用0、5、10、20 μg/mL DDP分别处理Ishikawa细胞和顺铂耐药的Ishikawa/DPP细胞，0、5、10、25、50 μmol/L Andro处理Ishikawa/DDP细胞，MTT法检测细胞增殖情况并为后续实验选择合适的给药剂量。将Ishikawa/DDP细胞随机分为对照组、DDP组（DDP干预）、Andro组（DDP、Andro干预）、pcDNA3.1-NC组（转染pcDNA3.1+DDP、Andro干预）、pcDNA3.1-Fas/FasL组（转染pcDNA3.1-Fas/FasL+DDP、Andro干预），24 h后，采用qPCR法检测Fas、FasL mRNA的表达，平板克隆形成实验、Transwell实验和流式细胞术分别检测细胞克隆能力、细胞迁移与侵袭和细胞凋亡，WB法检测增殖细胞核抗原（PCNA）、BAX、Bcl-2、MMP-2、PD-L1、多药耐药蛋白-1（MDR-1）及Fas、FasL蛋白表达。结果：DDP以剂量依赖的方式抑制Ishikawa和Ishikawa/DPP细胞增殖，并且与Ishikawa细胞比较，Ishikawa/DPP细胞对DDP的敏感性更低（均P<0.05）；Andro以剂量依赖性的方式抑制Ishikawa/DPP细胞的增殖（均P<0.05）。Ishikawa/DPP细胞中Fas、FasL的表达水平均高于Ishikawa细胞（均P<0.05）。选取20 μg/mL DDP和25 μmol/L Andro为干预剂量，干预时间24 h。与对照组比较，DDP组Ishikawa/DPP细胞中PD-L1、MDR-1、Fas、FasL mRNA及蛋白表达水平显著升高（P<0.05），而克隆形成率、迁移与侵袭细胞数、凋亡率差异均无统计学意义（均P>0.05）；与DDP组比较，Andro组Ishikawa/DPP细胞中Fas、FasL mRNA表达水平、细胞克隆形成率、迁移与侵袭细胞数、PCNA、Bcl-2、MMP-2、PD-L1、MDR-1、Fas、FasL蛋白表达水平显著降低，BAX蛋白表达水平及凋亡率显著升高（P<0.05或P<0.01），pcDNA3.1-NC组与Andro组类似；与pcDNA3.1-NC组比较，pcDNA3.1-Fas/FasL组Ishikawa/DPP细胞上述指标变化均被逆转（P<0.05）。结论：Andro可能通过抑制Fas/FasL信号轴来抑制Ishikawa/DPP细胞增殖、迁移与侵袭，促进凋亡，从而降低细胞对DDP的耐药性。

Objective To investigate the current situation and health effects of indoor microbial pollution in Xi&#39;an, to analyze the purification effect of air purifiers on indoor microbial pollution, and to provide reference for improving the indoor environment. Methods Through stratified random sampling, 20 families from rural areas and 20 families from upwind and downwind urban areas respectively were selected from Xi&#39;an. Data was collected by questionnaire surveys and on-site environmental sampling. Non-parametric analysis and correlation analysis were used for statistical analysis. Results Overall, the standard-exceeding rate of total count of bacteria was 5.00%. The medians of the total count of bacteria and fungi were 312.50 cfu/m3 and 260.00 cfu/m³, respectively. In terms of health effects, the correlation between rhinitis and cold with total bacterial count was statistically significant (P<0.05), with the correlation coefficients of 0.182 and 0.223, respectively. Purification effect of air purifiers on microbial pollution was statistically significant (P<0.05). After opening for 2 hours, the total numbers of bacteria and fungi decreased significantly. Conclusion The occurrence risk of colds and rhinitis is increased by indoor microbial pollution. Air purifiers have a certain effect on decreasing the total number of bacteria and fungi. It is recommended to use air purifiers with high CADR of particulate matter, double-layer filter and sterilization and dehumidification function, and replace the filters regularly to reduce indoor microbiological contamination.

Objectives To understand the quality status of disinfection products in the market in Shaanxi Province, and to provide a basis for taking targeted management measures. Methods From 2020 to 2023, in accordance with the national disinfection product management regulations and standards, the physicochemical and microbial tests of disinfection products in Shaanxi Province were carried out through supervised sampling, and the test results were analyzed according to the active ingredients, illegal addition, stability, and bactericidal or bacteriostatic performance. Results The overall qualification rate of the active ingredient content of disinfectants sampled in Shaanxi Province was 90.48%, with the lowest qualification rate in 2023 (84.38%). The overall qualification rate of quantitative sterilization test of disinfectants was 90.12%, showing a decreasing trend year by year (P=0.272). The overall qualification rate of anti-bacterial products was 88.59%, and the bactericidal test results of 20 antibacterial products were all qualified. The overall qualification rate of bacteriostatic performance testing for bacteriostatic products was 86.17%, with the pass rate of bacteriostatic product germicidal efficacy testing of different components in descending order being quaternary ammonium salt/silver ion > guanidine > others > lysozyme, and there was statistically significant difference (P=0.004). The detection rate of illegal additives in antimicrobial products was 7.07%, with the main detection indicators being miconazole nitrate, clobetasol propionate, and dexamethasone acetate. Conclusion The qualified rate of disinfection products in Shaanxi Province is relatively high, but there is a downward trend. It is necessary to continue to strengthen the daily supervision and product testing of disinfection product manufacturers, and promote the continuous improvement of disinfection product quality.

OBJECTIVE To establish a high-performance liquid chromatography method for the simultaneous determination of 14 components including geniposide, mangiferin, baicalin, berberine hydrochloride, wogonoside, baicalein, aloe-emodin, rhein, wogonin, emodin, praeruptorin A, chrysophanol, physcion and praeruptorin B in Qingfei Yihuo tablets. METHODS Titank C18 (250 mm×4.6 mm, 5 μm) column was used; 0.1% phosphoric acid solution(A)-acetonitrile(B) was used as the mobile phase with gradient elution; detection wavelengths: geniposide at 238 nm, aloe-emodin, rhein, emodin, chrysophanol, physcion and mangiferin at 254 nm, berberine hydrochloride at 265 nm, baicalin, wogonoside, baicalein, and wogonin at 280 nm, praeruptorin A and praeruptorin B at 321 nm. The flow rate was 1.0 mL·min−1 and the column temperature was 35 ℃; the injection volume was 10 μL. RESULTS The linear ranges of geniposide, mangiferin, baicalin, berberine hydrochloride, wogonoside, baicalein,aloe-emodin, rhein, wogonin, emodin, praeruptorin A, chrysophanol, physcion and, praeruptorin B were 4.96−223.17, 0.84−42.22, 18.76−938.16, 4.46−223.17, 4.86−243.10, 1.59−79.32, 0.76−38.17, 1.03−51.49, 1.59−79.40, 1.21−60.72, 1.80−90.06, 0.91−45.48, 1.04−51.83 and 0.86−43.23 μg·mL−1, with r all ≥ 0.999 9. The RSDs of instrument precision, stability and reproducibility tests were <3%, and the average recoveries in sample(n=6) were >90%, with the RSDs <3%. CONCLUSION The method is simple and reproducible and can provide a scientific basis for improving the quality standard of Qingfei Yihuo tablets.

Objective To investigate the clinical features of hospitalized children with pertussis.Methods The clinical data of 87 hospitalized children with pertussis admitted to Women and Children&#39;s Hospital Affiliated to Xiamen University from January 2019 to December 2022 were retrospectively analyzed.According to the age of the children,they were divided into group A(≤3 months of age,35 cases),group B(4-12 months of age,36 cases)and group C(>12 months of age,16 cases).The clinical features of children at different ages were compared.Results The majority of children with pertussis were<1 year old(81.61%),and August was the month of high incidence.Spastic cough(72.41%)was the main clinical manifestation.Other manifestations included redness or cyanosis,vomiting after coughing,crow echo,etc.There were statistically significant differences in the incidence of spastic cough,redness or cyanosis and the contact history of patients with chronic cough among three groups(P<0.05).There were significant differences in the incidence of pneumonia and the average length of hospital stay among three groups(P<0.05).There was significant difference in C-reactive protein level among three groups(P<0.05).Among 87 children with pertussis,37 cases(42.53%)were infected with other pathogens,among which virus infection was the most common.The treatment is effective with macrolides and compound sulfamethoxazole.Conclusion Pertussis is more common in infants under 1 year of age,and the incidence is high in August.Chronic cough patients with close contact may be the source of infection.Spastic cough is the main clinical symptom of children;the younger,the more common symptoms such as spastic cough,redness and cyanosis,the higher incidence of pneumonia and the longer hospital stay.