OBJECTIVE To explore the practice and application effect of lean Six Sigma （LSS） management in the cost- benefit management of PIVAS operation in a tertiary comprehensive hospital （hereinafter referred to as “S Hospital”）， providing reference for the operation and management of PIVAS in hospitals. METHODS The five steps （define， measure， analyze， improve and control， i.e. DMAIC） of LSS management were implemented for PIVAS operation cost-benefit of S Hospital， and lean management was implemented for its cost-benefit management elements （human resource cost， medical and health material cost， and all-in-one parenteral nutrition preparation income）. Several intervention measures including personnel training and performance assessment， refined management system of consumables， and doctor’s advice package of full parenteral nutrition were developed. Finally， the overall improvement effect was evaluated by the total benefit， total cost and net benefit of PIVAS. The effects of human resource allocation optimization and improvement were evaluated by the work efficiency， work quality， job satisfaction， turnover rate and accumulated rest days. The effects of consumables cost management were evaluated by the amount of medical and health materials cost. The improvement effects of all-in-one parenteral nutrition preparation income were evaluated by the profit amount， quantity and the proportion of single bottle of parenteral nutrition. RESULTS After implementing DMAIC in S Hospital， the total benefit of PIVAS was increased from （471 366.50±9 201.5） yuan/month to （479 679.50±14 320.14） yuan/month （P＞ 0.05）， the total cost was decreased from （305 878.88±3 201.75） yuan/month to （294 610.59±5 007.33） yuan/month （P＜0.05）， and the net benefit of PIVAS was increased by 11.83% compared with that before the improvement. The work efficiency， work quality and job satisfaction of employees were significantly improved， the accumulated rest days were significantly reduced， and the turnover rate of third-party employees was reduced from 15.0% before the improvement to 7.5% after the improvement. The cost of medical and health materials significantly decreased from （67 826.42±2 812.76） yuan/month before improvement to （56 384.33±4 607.67） yuan/month after improvement （P＜0.05）. The quantity of all-in-one parenteral nutrition was significantly increased from （1 263.75±135.83） group/month before improvement to （2 061.25±89.04） group/month after improvement （P＜0.05）， and the proportion of users of single bottle of parenteral nutrition in total users decreased from 93.25% before improvement to 58.75% after improvement. The profit of all-in-one parenteral nutrition was 63.18% higher than that before implementing DMAIC. CONCLUSIONS The implementation of PIVAS operation cost-benefit management based on DMAIC is conducive to strengthening the cost control of PIVAS and promoting the healthy development of PIVAS.

ObjectiveTo investigate the antidepressant effect of Sinisan （SNS） by regulating glycogen aynthase kinase-3β （GSK-3β）/tumor necrosis factor alpha-induced protein 3（A20）/CCAAT enhancer binding protein β（C/EBPβ） to inhibit the activation of microglia. MethodA total of 72 male C57/6J mice were randomly divided into the normal group， model group， fluoxetine group （5.0 mg·kg^-1）， low-dose Sinisan group （4.9 g·kg^-1）， medium-dose Sinisan group （9.8 g·kg^-1）， and high-dose Sinisan group （19.6 g·kg^-1）， with 12 mice in each group. After one week of adaptive feeding， chronic unpredictable mild stress （CUMS） was performed to establish the depression model. In the fifth week， drug treatment was conducted for four weeks. In the ninth week， behavioral tests were performed， including sucrose preference test （SPT）， open field test （OPT）， elevated plus maze （EPM） test， and forced swimming test （FST）. Western blot was used to detect the expression levels of interleukin-1β （IL-1β）， interleukin-6 （IL-6）， nitric oxide synthase （iNOS）， GSK-3β， A20， and C/EBPβ in the cortex. The expression of M1-polarized ionized calcium-binding adapter molecule 1 （Iba1） and cluster of differentiation 68 （CD68） in microglia was detected by immunofluorescence. ResultAfter eight weeks of CUMS， compared with the normal group， the mice in the model group had a significantly reduced sucrose preference rate （P<0.01）， and the activity in the central area of the OPT was significantly reduced （P<0.01）. The activity in the open arm area of the EPM test was significantly reduced （P<0.05）， and the immobility time of FST was increased （P<0.01）. The expression levels of inflammatory proteins IL-1β， IL-6， and iNOS were increased （P<0.01）， and the fluorescence co-localization index of Iba1 and CD68 was increased （P<0.05）. The protein expression levels of GSK-3β and C/EBPβ were significantly increased （P<0.05， P<0.01）. After four weeks of SNS intervention， compared with the model group， the mice in the SNS group had significantly increased sucrose preference rate （P<0.01）， significantly increased activities in the central area and the open arm area in the OPT and the EPM test （P<0.05）， and significantly reduced immobility time in the FST （P< 0.01）. The protein expression levels of IL-1β， IL-6， and iNOS were significantly decreased （P<0.05）， and the fluorescence co-localization index of Iba1 and CD68 was decreased in the high-dose SNS group （P<0.05）. The protein expression levels of GSK-3β and C/EBPβ in the medium-dose and high-dose SNS groups were significantly decreased （P<0.01）， and that of A20 was significantly increased （P<0.01）. ConclusionThe antidepressant effect of SNS is related to the regulation of GSK-3β/A20/C/EBPβ protein expression and the inhibition of M1-type activation of microglia.

Objective To discuss the perioperative care and wound protection of xenotransplantation from genetically edited pigs to monkeys, with the goal of improving the success rate of such experimental procedures. Methods From October 2022 to October 2023, perioperative care and wound protection were performed on 7 recipient rhesus monkeys undergoing xenotransplantation of genetically edited pig tissues and organs. Customized wound protective garments were designed based on monkeys' size and surgical area to protect the wounds, alongside meticulous perioperative care. This included preoperative preparation and medication, intraoperative monitoring of physiological indicators and anesthesia management, and postoperative care comprising wound protection, observation and monitoring, and nutritional support. Results All seven monkeys successfully underwent xenotransplantation. With the aid of protective garments and detailed care, all surgical wounds healed by first intention, and postoperative recovery was satisfactory. Conclusion Proper care and wound protection during xenotransplantation from genetically edited pigs to monkeys not only promote wound healing, but also alleviate pain and harm to animals. This has significant implications for advancing experimental research in pig-monkey xenotransplantation and enhancing animal welfare.

Oral health is closely related to systemic health. Common chronic oral diseases, periodontitis and periapical inflammation for example, not only affect the health of oral soft and hard tissues including the alveolar bone and gums, but may also cause changes in systemic conditions such as chronic low-grade inflammation, elevated oxidative stress levels, and dysbiosis of the microbiota. These changes in systemic health can exacerbate the progression of obesity. Therefore, through proactive oral health interventions such as maintaining good oral hygiene habits, modifying dietary structures, and undergoing oral examinations, it is possible to effectively prevent and alleviate inflammatory oral diseases, and actively intervene in obesity. This article delves into the impact of inflammatory oral diseases on obesity and their underlying mechanisms, defines the concept of "oral proactive healthcare", and systematically summarizes their preventive and therapeutic effects on inflammatory oral diseases, thereby demonstrating the potential of improving obesity through proactive oral health strategies.

To analyze the effects of tooth brushing frequency on blood indicators among adolescents and to preliminarily explore the effects of tooth brushing frequency on general health.

Objective To investigate the improvement effect and mechanism of marmesin on cognitive impairment in Alzheimer's disease(AD)mice.Methods Fifty mice were randomly divided into five groups:blank group,model group,low-and high-dose marmesin groups and donepezil(positive drug)group,with 10 mice in each group.After 21 days of continuous administration,except for the blank group,the mice in other groups were given intraperitoneal injection of scopolamine to establish the AD model.Network pharmacology was used to construct the protein-protein interaction(PPI)network of common targets of marmesin in the treatment of AD,and gene ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)enrichment analysis were performed to provide further research direction.The cognitive function of AD model mice was evaluated by Morris water maze,open field test and new object recognition test.Nissl staining was used to observe the damage of hippocampal neurons.The levels of acetylcholine(Ach),acetylcholine transferase(ChAT),acetylcholinesterase(AChE),reactive oxygen species(ROS),malondialdehyde(MDA)and catalase(CAT)in hippocampus of mice were detected by kit.The protein expression levels of interleukin 6(IL-6),interleukin 1β(IL-1 β),tumor necrosis factor α(TNF-α),nuclear factor E2-related factor 2(NRF2),silent information regulator homologous protein 3(SIRT3),Kelch-like ECH-associated protein 1(KEAP1),quinone oxidoreductase 1(NQO1)and heme oxygenase 1(HO-1)in hippocampus were detected by Western Blot.Results Compared with the model group,the latency of Morris water maze test was significantly shortened in the high-dose marmesin group,the time of entering the target area in the open field new object test and the movement distance in the central area of the open field were prolonged,the number of neurons in the hippocampal CA1 and CA3 regions was significantly increased,the levels of ChAT and Ach in the hippocampus were significantly increased,AChE level was significantly decreased,CAT level was significantly increased,ROS and MDA levels were significantly decreased,TNF-α expression level was decreased,SIRT3 and HO-1 expression levels were increased,and KE AP1 protein expression level was decreased,the differences being statistically significant(P＜0.05 or P＜0.01 or P＜0.001).Conclusion Marmesin can effectively improve the learning and memory impairment of AD mice,and its mechanism may be related to the activation of NRF2/SIRT3 signaling pathway,thereby alleviating oxidative stress level and neuroinflammation,and repairing cholinergic neuron function.

Objective To monitor the susceptibility of clinical isolates to antimicrobial agents in tertiary hospitals in major regions of China in 2022.Methods Clinical isolates from 58 hospitals in China were tested for antimicrobial susceptibility using a unified protocol based on disc diffusion method or automated testing systems.Results were interpreted using the 2022 Clinical &Laboratory Standards Institute(CLSI)breakpoints.Results A total of 318 013 clinical isolates were collected from January 1,2022 to December 31,2022,of which 29.5％were gram-positive and 70.5％were gram-negative.The prevalence of methicillin-resistant strains in Staphylococcus aureus,Staphylococcus epidermidis and other coagulase-negative Staphylococcus species(excluding Staphylococcus pseudintermedius and Staphylococcus schleiferi)was 28.3％,76.7％and 77.9％,respectively.Overall,94.0％of MRSA strains were susceptible to trimethoprim-sulfamethoxazole and 90.8％of MRSE strains were susceptible to rifampicin.No vancomycin-resistant strains were found.Enterococcus faecalis showed significantly lower resistance rates to most antimicrobial agents tested than Enterococcus faecium.A few vancomycin-resistant strains were identified in both E.faecalis and E.faecium.The prevalence of penicillin-susceptible Streptococcus pneumoniae was 94.2％in the isolates from children and 95.7％in the isolates from adults.The resistance rate to carbapenems was lower than 13.1％in most Enterobacterales species except for Klebsiella,21.7％-23.1％of which were resistant to carbapenems.Most Enterobacterales isolates were highly susceptible to tigecycline,colistin and polymyxin B,with resistance rates ranging from 0.1％to 13.3％.The prevalence of meropenem-resistant strains decreased from 23.5％in 2019 to 18.0％in 2022 in Pseudomonas aeruginosa,and decreased from 79.0％in 2019 to 72.5％in 2022 in Acinetobacter baumannii.Conclusions The resistance of clinical isolates to the commonly used antimicrobial agents is still increasing in tertiary hospitals.However,the prevalence of important carbapenem-resistant organisms such as carbapenem-resistant K.pneumoniae,P.aeruginosa,and A.baumannii showed a downward trend in recent years.This finding suggests that the strategy of combining antimicrobial resistance surveillance with multidisciplinary concerted action works well in curbing the spread of resistant bacteria.

Objective:To investigate the clinical characteristics and prognosis of single center adult chronic myeloid leukemia in chronic phase(CML-CP).Methods:Clinical data of 41 adult CML-CP patients in Department of Hematology,Shanghai Fengxian District Central Hospital from January 2015 to May 2021 were retrospectively analyzed.The clinical characteristics and prognosis of patients between＜60 years group and ≥ 60 years group were compared.Results:The 41 patients included 27(65.9％)males and 14(34.1％)females.The median age of the patients was 56(19-84)years,with 22 cases(53.7％)＜60 years and 19 cases(46.3％)≥60 years.Univariate analysis indicated that the proportions of patients with comorbidities,intermediate/high-risk Sokal score,myelofibrosis,and lactate dehydrogenase ≥1 000 U/L were significantly increased in ≥60 years group compared with＜60 years group at initial diagnosis(all P＜0.05).There were no statistical differences in the distribution of sex,ELST score,white blood cell count,platelet count,peripheral blood basophil percentage,peripheral blood eosinophil percentage and bone marrow primitive cell percentage between the two groups(P＞0.05).The proportion of patients taking reduced-dose imatinib in≥60 years group significantly increased(P＜0.001).Patients＜60 years had a higher proportion of molecular biological remission after treatment of tyrosine kinase inhibitors(TKIs)than patients ≥ 60 years(P＜0.001).The incidence of non-hematologic adverse reactions to TKI therapy significantly increased in patients ≥ 60 years(P＜0.001).Multivariate analysis showed that no adverse factors affecting the efficacy and prognosis of TKI.Conclusion:Compared with adult CML-CP patients＜60 years,patients ≥ 60 years gain fewer benefits from TKI treatment and increased adverse reactions.

Objective:To explore the effects of standard meal and treadmill exercise test on body surface gastrointestinal electrogram in healthy subjects, and to provide more evidence for the clinical application of gastrointestinal electrogram.Methods:From January to June 2021, a total of 100 healthy asymptomatic volunteers underwent gastrointestinal electrogram after fasting, standard meal and treadmill exercise test. After the subjects fasted for more than 8 hours, the gastrointestinal electrogram was performed after the subjects were lying flat, quiet, and breathing steadily, electrodes were placed on the the body surface projection positions of the gastric body, the lesser curvature, the greater curvature, the antrum, the ascending colon, the transverse colon, the descending colon, and the rectum. The fasting gastrointestinal electrogram was recorded for 6 min. Then lay for 5 to 10 min after the standard meal (100 g bread, 250 mL milk), the postprandial gastrointestinal electrogram was recorded for 6 min. And lay for 5 to 10 min after treadmill exercise test, then the postexercise gastrointestinal electrogram was recorded for 6 min. The frequency and amplitude of gastrointestinal electrogram waveforms of the three time points were compared, and the percentage of gastrointestinal electrical rhythm disorder, and slow wave frequency instability coefficient were also compared. Stratified analysis of gastric motility was performed according to age, sex and body mass index. Paired t-test, Pearson Chi-squared test, continuity correction Chi-squared test, Fisher′s exact method and Speraman correlation were used for statistical analysis. Results:The standard meal did not obviously affect the mean frequency of the gastric electrocardiogram, however the mean amplitude of gastric electrocardiogram significantly increased after standard meal compared with that of fasting, especially in the electrodes placed at lesser curvature((148.5±8.7) μV vs.(113.2±5.0)μV ), greater curvature((176.3±11.3) μV vs.(126.1±7.3) μV), and antrum((161.8±10.6) μV vs.(117.6±4.91) μV), and the differences were statistically significant( t=4.63, 4.63 and 3.99, all P< 0.001). There were no significant changs in rhythm and stability of the gastric electrocardiogram. The mean frequency of intestinal electrograms at the ascending colon, the transverse colon, the descending colon, and the rectum decreased after the standard meal compared with that of fasting ((10.8±0.2) count per minute(cpm) vs.(11.5±0.2) cpm, (10.5±0.2) cpm vs.(11.2±1.6) cpm, (10.9±0.2) cpm vs.(11.7±0.2) cpm, (11.1±0.2) cpm vs.(11.8±0.2) cpm), and the differences were statistically significant ( t=3.82, 4.55, 4.39, and 3.98, all P<0.001); the mean amplitude of the ascending colon, the transverse colon, and the rectum increased compared with that of fasting ((129.8±6.1) μV vs. (110.9±6.4) μV, (119.6±4.1) μV vs. (101.3±4.7) μV, (124.1±4.6) μV vs. (106.2±5.7) μV), and the differences were statistically significant ( t=2.62, 3.76, and 3.16; P=0.010, <0.001, =0.002); and the number of leads with enteroelectric rhythm disorder increased (398 vs. 389, the total number of leads is 400), and the difference was statistically significant( χ2=7.31, P=0.026). The mean frequency of gastric electricity after treadmill exercise in electrode placed at antrum increased compared with that after standard meal ((3.4±0.4) cpm vs.(3.3±0.3) cpm), and the differences were statistically significant( t=2.45, P=0.016), and the mean amplitude of gastric electricity in electrodes placed at gastric body, lesser curvature and antrum increased compared with those after standard meal((160.2±8.6) μV vs. (133.9±6.4) μV, (178.1±10.0) μV vs. (148.5±8.7) μV, (202.5±10.2) μV vs. (161.8±10.6) μV), and the differences were statistically significant ( t=2.30, 2.35, and 2.48; P=0.024, 0.021, and 0.015). Treadmill exercise affected the rhythm and stability of gastric electricity, and the number of electrodes with instable and abnormal coefficient frequency slow-wave significantly increased (25 vs. 1, the total number of electrodes is 400), and the difference was statistically significant( χ2=22.90, P<0.001). There was no significant change in the mean frequency of the colonic electricity after treadmill exercise compared with that after standard meal, however the mean amplitude of intestinal electrical waveform at the ascending colon, the transverse colon, the descending colon, and the rectum increased compared with those after standard meal((171.2±8.4) μV vs. (129.8±6.1) μV, (166.1±7.7) μV vs. (119.6±4.1) μV, (147.2±7.2) μV vs. (121.1±4.9) μV, (149.6±7.3) μV vs. (124.1±4.6) μV), and the differences were statistically significant( t=3.51, 5.49, 3.09, and 2.83; P=0.001, <0.001, =0.003, and=0.006), which affected the rhythm and stability of the colonic electricity, and the number of electrodes with instable and abnormal coefficient frequency slow-wave significantly increased (10 vs. 3, the total number of electrodes is 400, χ2=4.04, P=0.040). Gender was correlated with mean frequency of gastric electricity after standrdmeal and treadmill exercise test and mean amplitude of fasting and standard postprandial gastric electricity( r=0.242, -0.272, 0.286, 0.242; P=0.015, 0.006, 0.004, 0.015), and with mean amplitude of fasting and standard postprandial electricity( r=0.225, 0.460; P=0.024, <0.001). Age was only associated with mean frequency of fasting gastric electricity( r=-0.214, P=0.033). Body mass index was correlated with mean gastric electrical amplitude after fasting, standard meal and treadmill exercise( r=-0.347, -0.260, -0.211; P<0.001, =0.009, =0.036), as well as with the mean gastric electricity frequency after treadmill exercise ( r=0.242, P=0.016). Body mass index was correlated with the mean amplitude and frequency of fasting and standard postprandial intestinal electricity ( r=-0.261, -0.296, -0.400, -0.286; P=0.009, =0.003, < 0.001, =0.003). In the healthy volunteers with female gender and body mass index < 24 kg/m 2, there were statistically significant differences in the changes of gastric motility after standard meal (Fisher′s exact method, P=0.022 and 0.024). Conclusion:Both standard meal and treadmill exercise test affect gastrointestinal electrical activity, and exercise caused more changes in gastrointestinal electrical activity than standard meal.

Objective:To predict and analyze the number of acute pancreatitis (AP) inpatients based on time series model, and to explore the predictive efficiency of the model.Methods:Clinical data of AP inpatients in the Affiliated Hospital of Southwest Medical University from January 2014 to December 2019 were collected. R software was used to collect the time series of AP inpatients, and the trend and seasonal characteristics of AP inpatients from 2014 to 2018 were analyzed. Furthermore, the autoregressive moving average (ARIMA) model was established through stationarity test, model ordering and model testing steps, and the best selected model was used to predict the monthly number of inpatients in 2019 to verify its prediction efficiency.Results:A total of 3 939 AP patients were included in the study. The most common etiology for AP was cholestrogenic (48.2%), followed by hyperacylglyceremia (36.3%). The peak age of hospitalization was from 40 to 60 years old. Time series analysis showed that the number of AP inpatients increased year by year. The highest peak of the disease was from February to March, followed by September to November; and there was seasonal variation and the incidence was relatively small in summer. The established original training set sequence did not pass the stationarity test ( P=0.061), so the ARIMA model was established after it was transformed into a stationarity sequence by first-order difference. According to the criterion of minimum AIC value, ARIMA(2, 1, 1)(1, 1, 1) 12 was selected as the best model. The model was used to predict the number of AP inpatients in 2019, showing that it could better fit the trend of onset time and had good short-term prediction effect. The mean root error and absolute error were 6.8790 and 4.7783, respectively. Conclusions:The number of AP inpatients increases year by year with seasonal changes. ARIMA model is effective in predicting the number of AP inpatients and can be used for short-term prediction.