Objective To explore the relationship between serum soluble semaphorin 4D(sSema4D),CXC chemokine ligand 12(CXCL12)levels and left ventricular diastolic function in young and middle-aged patients with essential hypertension.Methods A total of 148 young and middle-aged patients with essential hyperten-sion admitted to a hospital from November 2020 to November 2022 were selected as the study subjects,and were grouped into left ventricular diastolic dysfunction group(n=41)and normal left ventricular diastolic function group(n=107)according to their left ventricular diastolic function.The serum levels of sSema4D and CXCL12 were detected by enzyme-linked immunosorbent assay.Pearson correlation analysis was applied to analyze the correlation between the serum levels of sSema4D and CXCL12 and the left ventricular end-diastolic diameter(LVEDD),left ventricular end-systolic diameter(LVESD),left ventricular septal thickness(IVST),left ventricular end-diastolic posterior wall thickness(LVPWT),left ventricular ejection fraction(LVEF),E peak/A peak(E/A)and maximum velocity of tricuspid regurgitation(TRVmax).The predictive value of ser-um sSema4D and CXCL12 levels in left ventricular diastolic dysfunction in young and middle-aged patients with essential hypertension was analyzed by receiver operating characteristic(ROC)curve.Results There were significant differences in diastolic blood pressure and gender between the left ventricular diastolic dys-function group and the left ventricular diastolic function normal group(P＜0.05).Compared with the normal left ventricular diastolic function group,serum levels of sSema4D,CXCL12 in the left ventricular diastolic dys-function group were obviously increased,and the difference was statistically significant(P＜0.05).Compared with normal left ventricular diastolic function group,IVST and LVPWT in the left ventricular diastolic dys-function group were significantly increased,and E/A was significantly decreased,with statistical significance(P＜0.05).Pearson correlation analysis showed that serum sSema4D and CXCL12 levels were positively cor-related with LVEDD,IVST and LVPWT(P＜0.05),and negatively correlated with E/A(P＜0.05).ROC curve analysis showed that the area under the curve(AUC)of serum sSema4D and CXCL12 combined in pre-dicting left ventricular diastolic dysfunction in young and middle-aged patients with essential hypertension was 0.894(95％CI:0.833-0.939),which was significantly greater than that of sSema4D alone in predicting left ventricular diastolic dysfunction in young and middle-aged patients with essential hypertension(Z=3.142,P=0.002)and CXCL12 alone predicted the AUC of left ventricular diastolic dysfunction in young and middle-aged patients with essential hypertension(Z=3.268,P=0.001).Conclusion Serum sSema4D and CXCL12 levels are associated with left ventricular diastolic function in young and middle-aged patients with essential hypertension.

Objective:To investigate the current situation of occupational burnout among bus drivers in Wuhu City and analyze its influencing factors.Methods:A survey was conducted in 1 388 bus drivers in Wuhu City from Sep to Nov 2022 using the general information questionnaire,the Maslach Burnout Inventory-General Survey(MBI-GS),and the Pittsburgh Sleep Quality Index(PSQI).Multivariable logistic regression analysis was used to analyze the influencing factors of occupational burnout in bus drivers.Spearman correlation analysis was used to analyze the correlation between occupational burnout and sleep quality.Results:Among 1 388 bus drivers,642(46.3%)were positive for occupational burnout,and 139(10.0%)were found to have sleep disorders.Multivariable logistic regression analysis showed that longer bus driving experience(OR=1.873,95%CI:1.325-2.648),lower monthly income(OR=0.376,95%CI:0.158-0.774),higher smoking frequency(OR=1.313,95%CI:1.188-2.163),higher drinking frequency(OR=1.342,95%CI:1.018-1.769),lower weekly physical exercise frequency(OR=0.367,95%CI:0.243-0.555),and poor sleep quality(OR=13.110,95%CI:7.284-23.594)were the influencing factors of bus driver occupational burnout(P＜0.05).Spearman correlation analysis showed that the total score of occupational burnout and its dimension scores were positively correlated with the total score of sleep quality and its dimension scores(rs=0.12-0.83,P＜0.01).Conclusion:The problem of occupational burnout among bus drivers in Wuhu City is relatively serious,and a part of people have sleep problems,which should be paid great attention to and active measures should be taken in time.

A novel technology is proposed for non-contact and real-time detection of atrial fibrillation using millimeter-wave radar.A 60 GHz PCR millimeter wave radar is used to continuously detect the chest echo signal of the subject.After signal acquisition,I-Q signal is generated through I-Q demodulation,and the signal phase information is extracted using effective points phase trend evaluation for obtaining the signals from oscillations in the chest wall,from which the respiratory signals and cardiac signals are extracted through digital filtering for the analysis of cardiac movement.Whether the atrial fibrillation occurs or not is determined by the characteristics of atrial fibrillation wave in the time domain.The effective points phase trend evaluation for extracting more accurate signal phase information and the time-domain method for real-time atrial fibrillation detection are the innovations of the study.The experimental results show that the proposed method achieves a detection accuracy of 99.2%in clinic.

Objective This study aimed to identify PAX9 variants in non-syndromic tooth agenesis families of Chi-na,as well as to analyze the genotype-phenotype of non-syndromic tooth agenesis caused by PAX9 variants,which can provide a basis for the genetic diagnosis of tooth agenesis.Methods We collected the data of 44 patients with non-syn-dromic oligodontia who underwent treatment at Stomatological Hospital of Hebei Medical University between 2018 and 2023.Whole-exome sequencing was performed on the peripheral blood of the proband and its core family members,and the variants were verified by Sanger sequencing.Pathogenicity analysis and function prediction of the variants were per-formed using bioinformatics tools.The correlation between the genotype of PAX9 variant and its corresponding pheno-type was examined by reviewing 55 publications retrieved from PubMed.The studies involved 232 tooth agenesis pa-tients with PAX9 variants.Results A novel PAX9 c.447delG(p.Pro150Argfs*62)and a reported PAX9 c.406C>T(p.Gln136*)were identified in two Chinese families.Through bioinformatics analysis and three-dimensional structural mod-eling,we postulated that the frameshift variant was pathogenic.The outcome was the premature cessation of PAX9 pro-tein,which caused severe structural and functional deficiencies.Summarizing the PAX9 genotype-phenotype relationship revealed that patients carrying the PAX9 variant commonly led to loss of the second molars.Conclusion We identified the novel PAX9 c.447delG(p.Pro150Argfs*62)in a Chinese family of non-syndromic oligodontia,expanding the known variant spectrum of PAX9.The most susceptible tooth position for PAX9 variants of tooth agenesis was the second mo-lars and the deciduous molars during the deciduous dentition.

Objective To compare the incidence of catheter-related venous thrombosis between midline catheters and peripherally inserted central catheters.Methods Randomized controlled trials and cohort studies on the incidence of venous thrombosis associated with midline catheters and PICC catheters were searched from CNKI,Wanfang database,VIP database,Web of Science,PubMed,Embase and Cochrane Library from inception to December 31,2022.Review Manager 5.4 software and Stata 14.0 software were used to analyse and describe the outcome indicators.Results A total of 16 studies were included,including 12 cohort studies and 4 randomized controlled studies,with 21853 subjects.The results of the Meta-analysis showed that the incidence of catheter-related venous thrombosis per thousand catheter days of midline catheters was statistically significant compared with PICC[RR=2.74,95％CI(1.21,6.21),P=0.016].There was no significant difference in the incidence of catheter-related venous thrombosis compared with PICC[RR=0.85,95％CI=(0.70,1.03),P=0.101].In the subgroups,the incidence of superficial vein thrombosis in the midline catheter was significantly different from that in the PICC[RR=2.36,95％C/=(1.56,3.58),P＜0.001].Conclusion The current evidence shows that the incidence rate of catheter-related venous thrombosis per thousand catheter days and superficial vein thrombosis was higher for midline catheters than PICCs.Therefore,in clinical practice,vascular access devices should be selected reasonably,and the occurrence and development of catheter-related superficial venous thrombosis should be paid attention to,and clinical screening should be effectively carried out on the basis of a full evaluation.

OBJECTIVE Nowadays, the development of pharmacy discipline has a new trend, which is reflected in the close connection with the national strategy, the integration of basic and applied research, the high degree of discipline intersection, the long achievement cycle, and the high career access, etc. The traditional model of pharmacy talent cultivation can no longer meet the needs of the development of pharmacy discipline and the creation of new drugs in the new era, therefore, it puts forward new paths of the cultivation of innovative talents in pharmacy. METHODS On the basis of analyzing the main problems existing in the process of cultivation of existing pharmacy talents, to describe the new trends and new paths of cultivation of top-notch innovative pharmacy talents in the new era. RESULTS Propose to start from the four aspects of the trinity of the guidance mechanism, the mechanism of the science education and human resources mechanism, the regularization of the joint mechanism, and the mechanism of the cultivation of talents. CONCLUSION It is proposed to build a talent cultivation model with a "Student-Scholar" orientation, to provide new ideas for the cultivation of future pharmacy talents in the new era.

The construction of a medication safety culture is important for medication safety management and rational drug use.The construction of medication safety culture standards is formulated based on relevant national policies and regulations,accreditation standards for hospitals,expert opinions,the current situation,and the development trend of the healthcare industry.With scientificity,general applicability,instructive guidance,and practicality,they standardized basic requirements,management processes,and improvement of the construction of medication safety culture.To facilitate understanding and the implementation of the standards,we describe the process of standards formulation and explain the key points of the standards.

Objective:To analyze the vaccination recommendations and follow-up for children with special health status.Methods:In this retrospective cohort study, 509 children who attended the Consultation Clinic of Vaccination for Special Health Children in Beijing Children′s Hospital from August 2020 to February 2023 were selected, the children were given vaccination planning advice after the assessment. The clinical data were collected, including the general situation, special health conditions, vaccination recommendations and implementation status, occurrence and outcomes of suspected adverse events following immunization (AEFI) after vaccination. The vaccination situation and safety in these children were evaluated.Results:Among the 509 children, the most common special health conditions were cardiovascular system diseases (103 cases), followed by neurological diseases (88 cases) and neonatal problems (82 cases). After comprehensive evaluation and multidisciplinary collaboration, 399 children (78.4%) were recommended to receive vaccination/catch-up vaccination according to the immunization program, 63 children (12.4%) were recommended to receive some vaccines but temporarily suspend others, and 47 children (9.2%) were recommended to temporarily suspend vaccination. A total of 449 children (88.2%) were actually vaccinated, AEFI occurred in 49 children and 45 cases were considered as general reactions.Conclusions:The majority of children with special health status can be vaccinated, and the overall compliance and safety are high. The individualized immunization evaluation model of multidisciplinary collaboration is conducive to the completion of the immunization program of children with special health status.

Objective:This study aimed to explore the clinical value of myostatin(MST) and follistatin(FST) as biological biomarkers in evaluating sarcopenia in elderly women.Methods:This was a retrospective cross-sectional study that enrolled 350 females aged 20-89 years who underwent physical examinations in Shanghai Huadong Hospital in 2021. Demographic characteristics, muscle mass, fat mass, bone mineral density, hand grip strength, gait speed, and serum indices of MST and FST were collected.Results:The serum levels of MST did not change significantly with age. However, the serum levels of FST increased with age. In women aged≥60 years, MST was positively correlated with total lean mass and appendicular skeletal muscle index(ASMI; r=0.236, P=0.041; r=0.289, P=0.014), while FST was negatively correlated with ASMI( r=-0.265, P=0.030). In multivariate stepwise regression analysis, after adjusting for age, body mass index, hip bone mineral density, and total fat mass, only FST was independently correlated with ASMI( β=-0.238, P=0.006), while MST was not correlated with ASMI. The receiver operating characteristic curve was plotted using muscle mass reduction as the state variable and serum FST level as the test variable. The area under the curve was 0.753. And when the FST cutoff value was 17.49 ng/mL, the maximum Jordan index was 0.46, with a sensitivity of 77.3% and a specificity of 68.7%. Women aged ≥60 years were divided into three groups based on serum FST levels. Compared to the upper third of the serum FST level group, the low third of the FST level group had a significantly reduced risk of suffering from sarcopenia( OR=0.098, P =0.036). Conclusions:Serum FST lever has a better correlation with muscle mass among elderly women, making it a promising biomarker for evaluating muscle mass.

Objective:Based on the specific cleavage and non-specific "trans-cleavage" activities of the clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated protein(CRISPR/Cas13), we established a visually amplification-free rapid detection technique of 2019-nCoV nucleic acid. This technique is easily processed with a low detection limit and good specificity.Methods:According to the 2019-nCoV gene sequence, specific CRISPR RNAs were screened and designed by bioinformatics analysis, and then synthesized as universal signal-strained RNA transcription targets in vitro to establish and optimize the reaction system. Moreover, the 2019-nCoV pseudoviral nucleic acid was used as a standard substance to evaluate the detection limit. A total of 65 positive samples were collected from various 2019-nCoV variants, while 48 negative samples included other clinically common respiratory pathogens, such as influenza A virus, influenza B virus, human parainfluenza virus, Klebsiella pneumonia, etc. All samples were tested by quantitative PCR (qPCR), digital PCR, and the method established in this study. The sensitivity and specificity of the newly established method were analyzed and evaluated. Results:With the newly established technique, the detection time for 2019-nCoV nucleic acid could be minimized to 6 minutes. In addition, the detection limit was 14 copies/μl when assisted by the displaying instrument, whereas it increased to 28 copies/μl with the naked eye. This technique had a sensitivity and specificity of 98.5% (66/67) and 100% (46/46) respectively, showing no statistically significant difference compared to the gold standard qPCR( P=1). Conclusions:This study has successfully established a CRISPR/Cas13a-based visually rapid detection technique for 2019-nCoV nucleic acid. This technique offers the advantages of a simple process, convenient operation, low environmental operating requirements, a detection limit close to qPCR, and a strong potential for on-site testing applications.