ObjectiveTo explore the effects of different dosage forms of Kaixinsan （KXS） on the morphology and function of mitochondria in rat models of Alzheimer's disease （AD） and potential mechanisms of action. MethodsMale SD rats were randomly assigned to a sham group， model group， treatment groups receiving KXS decoction， powders， and granules （3.08 g·kg^-1）， as well as donepezil group （0.51×10^-3 g·kg^-1）， with 10 rats in each group. AD model was created using intracerebroventricular injection of streptozocin （STZ）. After 30 days of administration， behavioral assessments were conducted， and mitochondrial morphology was observed using transmission electron microscopy. Mitochondrial respiratory chain complex content was measured via enzyme-linked immunosorbent assay （ELISA）. Changes in mitochondrial membrane potential were measured via JC-1 staining， and superoxide dismutase （SOD） activity and reactive oxygen species （ROS） levels were measured via biochemical assays. The mRNA expression of adenosine 5'-monophosphate-activated protein kinase （AMPK）， peroxisome proliferator-activated receptor gamma coactivator-1α （PGC-1α）， and silent information regulator 3 （SIRT3） was detected by real-time fluorescent quantitative polymerase chain reaction （Real-time PCR）， and Western blot was used to examine the protein expression levels of optic atrophy protein1 （OPA1）， mitochondrial fission protein 1 （FIS1）， AMPK， p-AMPK， PGC-1α， and SIRT3. ResultsCompared with the sham group， rats in the model group had significantly lower recognition index， spontaneous alternation rate， escape latency， number of platform crossings， time spent in the target quadrant， and percentage of distance traveled in the target quadrant distance （P<0.05， P<0.01）. Significant mitochondrial damage was observed in the hippocampal tissue， with a marked decrease in mitochondrial respiratory chain complex content （P<0.01） and reduced mitochondrial membrane potential （P<0.05）. Additionally， the SOD activity was reduced， while ROS levels were elevated （P<0.01）. The mRNA expression of PGC-1α and SIRT3 was significantly downregulated （P<0.01）， along with decreased protein expression levels of OPA1， p-AMPK/AMPK， PGC-1α， and SIRT3， whereas FIS1 protein expression was significantly upregulated （P<0.05， P<0.01）. Compared with the model group， rats in KXS-treated groups （various dosage forms） showed significant improvement in behavioral indexes （P<0.05， P<0.01）， reduced hippocampal mitochondrial damage， and more organized mitochondrial cristae. Mitochondrial respiratory chain complex content was significantly increased （P<0.05， P<0.01）， and mitochondrial membrane potentials were elevated （P<0.05）. SOD activity was elevated， and ROS levels were significantly reduced （P<0.05， P<0.01）. Furthermore， the mRNA expression of PGC-1α and SIRT3 was upregulated， with increased protein levels of OPA1， p-AMPK/AMPK， PGC-1α， and SIRT3， while FIS1 protein expression levels were significantly reduced （P<0.05， P<0.01）. Across the KXS-treated groups， the granule group showed a higher spontaneous alternation rate than the decoction and powder groups （P<0.05）. ConclusionKXS decoction， powders， and granules can improve the learning and memory ability of rats， with granules being the most effective. The mechanism of action may involve activation of the AMPK/PGC-1α/SIRT3 signaling pathway， improvement of the mitochondrial function， and subsequent amelioration of the brain energy metabolism disorders.

ObjectiveTo explore the effects of different dosage forms of Kaixinsan （KXS） on the morphology and function of mitochondria in rat models of Alzheimer's disease （AD） and potential mechanisms of action. MethodsMale SD rats were randomly assigned to a sham group， model group， treatment groups receiving KXS decoction， powders， and granules （3.08 g·kg^-1）， as well as donepezil group （0.51×10^-3 g·kg^-1）， with 10 rats in each group. AD model was created using intracerebroventricular injection of streptozocin （STZ）. After 30 days of administration， behavioral assessments were conducted， and mitochondrial morphology was observed using transmission electron microscopy. Mitochondrial respiratory chain complex content was measured via enzyme-linked immunosorbent assay （ELISA）. Changes in mitochondrial membrane potential were measured via JC-1 staining， and superoxide dismutase （SOD） activity and reactive oxygen species （ROS） levels were measured via biochemical assays. The mRNA expression of adenosine 5'-monophosphate-activated protein kinase （AMPK）， peroxisome proliferator-activated receptor gamma coactivator-1α （PGC-1α）， and silent information regulator 3 （SIRT3） was detected by real-time fluorescent quantitative polymerase chain reaction （Real-time PCR）， and Western blot was used to examine the protein expression levels of optic atrophy protein1 （OPA1）， mitochondrial fission protein 1 （FIS1）， AMPK， p-AMPK， PGC-1α， and SIRT3. ResultsCompared with the sham group， rats in the model group had significantly lower recognition index， spontaneous alternation rate， escape latency， number of platform crossings， time spent in the target quadrant， and percentage of distance traveled in the target quadrant distance （P<0.05， P<0.01）. Significant mitochondrial damage was observed in the hippocampal tissue， with a marked decrease in mitochondrial respiratory chain complex content （P<0.01） and reduced mitochondrial membrane potential （P<0.05）. Additionally， the SOD activity was reduced， while ROS levels were elevated （P<0.01）. The mRNA expression of PGC-1α and SIRT3 was significantly downregulated （P<0.01）， along with decreased protein expression levels of OPA1， p-AMPK/AMPK， PGC-1α， and SIRT3， whereas FIS1 protein expression was significantly upregulated （P<0.05， P<0.01）. Compared with the model group， rats in KXS-treated groups （various dosage forms） showed significant improvement in behavioral indexes （P<0.05， P<0.01）， reduced hippocampal mitochondrial damage， and more organized mitochondrial cristae. Mitochondrial respiratory chain complex content was significantly increased （P<0.05， P<0.01）， and mitochondrial membrane potentials were elevated （P<0.05）. SOD activity was elevated， and ROS levels were significantly reduced （P<0.05， P<0.01）. Furthermore， the mRNA expression of PGC-1α and SIRT3 was upregulated， with increased protein levels of OPA1， p-AMPK/AMPK， PGC-1α， and SIRT3， while FIS1 protein expression levels were significantly reduced （P<0.05， P<0.01）. Across the KXS-treated groups， the granule group showed a higher spontaneous alternation rate than the decoction and powder groups （P<0.05）. ConclusionKXS decoction， powders， and granules can improve the learning and memory ability of rats， with granules being the most effective. The mechanism of action may involve activation of the AMPK/PGC-1α/SIRT3 signaling pathway， improvement of the mitochondrial function， and subsequent amelioration of the brain energy metabolism disorders.

BACKGROUND:Liver organoids are of great significance to elucidate the exact pathological mechanism of liver diseases and the treatment of liver diseases. OBJECTIVE:To summarize the basic research in this field at home and abroad,review the important research progress in the construction of liver organoids,disease modeling and transplantation therapy,and discuss the application prospect of combined tissue engineering technology of liver organoids. METHODS:The relevant articles included in PubMed and CNKI databases were searched.The English and Chinese search terms were"liver,organoids,liver diseases."The main search time was from April 2018 to April 2024.Duplicate literature was excluded by manual reading.Finally,94 articles were included for review and analysis. RESULTS AND CONCLUSION:The seed cells constructed by liver organoids are mainly concentrated in adult cells and pluripotent stem cells,which promote the generation of organoids by assisting various cytokines to participate in signal guidance and providing 3D microenvironment by extracellular matrix.However,the overall maturity is not high,which is expected to improve this problem by combining tissue engineering technology.In vitro disease modeling is mainly studied in the field of simple diseases and single-gene genetic diseases.Organoids highly retain patient genetic characteristics,and it is expected to simulate more complex liver diseases and clarify deeper pathological mechanisms by combining CRISPR-Cas9 gene correction and other emerging technologies.In vivo transplantation treatment,liver organoids can be safely and effectively implanted,showing amazing liver function replacement potential,tissue regeneration ability,and may also be combined with other tissue engineering materials to achieve therapeutic purposes.

Objective:To investigate the trends in detection, treatment, and outcomes of rifampicin-resistant tuberculosis (TB) in Jiangsu Province from 2013 to 2023, assess the effectiveness of control policies and measures for drug-resistant TB, and provide evidence for better control of drug-resistant TB.Methods:Data and indicators related to the screening, diagnosis, treatment, and outcomes of rifampicin-resistant TB in Jiangsu Province from 2013 to 2023 were obtained from the Tuberculosis Management Information System. The Joinpoint regression method was employed to analyze the trends over this period, and annual percent change (APC) and average annual percent change (AAPC) were calculated. A comparative analysis was also conducted to evaluate the changes before and after implementing relevant policies and measures.Results:From 2013 to 2023, the number of registered rifampicin-resistant TB patients in Jiangsu Province showed a consistent upward trend (APC=AAPC=1.45%, P=0.035). The screening rates for drug resistance among new TB patients in high-risk groups and the proportion of molecular biological testing for drug resistance all exhibited increasing trends, with a notable turning point occurring in 2018. The trend of the treatment enrollment rate for rifampicin-resistant TB patients experienced a significant shift in 2020, showing a marked increase from 2013 to 2020 (APC=12.91%, P=0.008). The treatment success rate of rifampicin-resistant TB patients also showed a significant upward trend after a turning point in 2020 (APC=9.94%, P=0.004). Conclusion:From 2013 to 2023, significant progress was seen in preventing and treating rifampicin-resistant TB in Jiangsu Province, with relevant policies and measures proving to be highly effective.

BACKGROUND:The therapeutic efficacy of moderate or severe intrauterine adhesions is poor.After synechotomy,the high postoperative recurrence rate severely affects the reproductive health of women of childbearing age,which is an urgent problem to be solved in clinical practice.Perinatal mesenchymal stem cells and their combined hydrogels have unique advantages,and they have received particular attention on the treatment of intrauterine adhesions.OBJECTIVE:To summarize the research progress of perinatal mesenchymal stem cells and their combined hydrogel in the treatment of intrauterine adhesions.METHODS:Search terms were"mesenchymal stem cells,perinatal period,hydrogel,intrauterine adhesions,endometrial injury"in Chinese and English.Relative articles published from 2010 to 2024 were retrieved on PubMed,CNKI,and WanFang databases.As a result,80 articles that met the inclusion criteria were reviewed and analyzed.RESULTS AND CONCLUSION:(1)Similar to other sources of mesenchymal stem cells,perinatal mesenchymal stem cells have a good therapeutic effect on intrauterine adhesions,and can meet the needs of autologous and allogeneic transplantation.(2)The mechanism of perinatal mesenchymal stem cell transplantation from umbilical cord,amniotic membrane,placenta,and umbilical cord blood in the treatment of uterine adhesion involves in regulation of relative signaling pathways such as colonization and differentiation,cellular immunity,paracrine,and promoting endometrial regeneration and angiogenesis,immune regulation,anti-endometrial cell apoptosis,inhibition of epithelial-mesenchymal transition,and anti-fibrosis.(3)Perinatal mesenchymal stem cells combined with hydrogel have a synergistic effect on the treatment of intrauterine adhesions.On the basis of the effect of mesenchymal stem cells,the hydrogel also plays a role in supporting and maintaining the continuous release of mesenchymal stem cells,promoting cell migration and adhesion,which is helpful to better promote endometrial regeneration and anti-fibrosis.It is beneficial to repair the damaged endometrial,improve endometrial receptivity and fertility,and reduce the recurrence rate.(4)A few of clinical trials have initially verified the effectiveness and safety of umbilical cord mesenchymal stem cells or hydrogels in the treatment of intrauterine adhesions.Further studies are still needed on the interaction between perinatal mesenchymal stem cells and polymer biomaterials such as hydrogels,and other effects and molecular mechanism of combined treatment of intrauterine adhesions.

Objective To develop a rapid and accurate ultra-performance liquid chromatography tandem mass spectrometry(UPLC-MS/MS)method for the detection of etomidate,metomidate,propoxate,and isopropoxate in human hair.Methods Hair samples containing etomidate,metomidate,propoxate,and isopropoxate were extracted with methanol containing the internal standard orthoxine,filtered with a 0.22 μm organic filter membrane and detected vio UPLC-MS/MS.All components were separated by using a gradient elution procedure consisting of 0.01％formic acid(1 mmol/L ammonium acetate)and acetonitrile.Positive electrospray ionization was performed using multiple reaction monitoring(MRM)mode.Results The linear relationships of etomidate,metomidate,propoxate,and isopropoxate were good in the range of 0.01～1 ng/mg(r ≥ 0.997 9),with recovery rates ranging from 87.9％to 101.5％.The accuracy was between 80.0％and 110.0％.The intra-day and inter-day relative standard deviations(RSD)were 2.9％～9.6％and 3.6％～19.9％.Conclusion This method is easy to operate and has high recovery efficiencies.It is sufficiently simple and sensitive to be applied to detect etomidate,metomidate,propoxate,and isopropoxate in hair.

Objective:To analyze the prognostic factors of patients with liver cirrhosis and portal vein thrombosis (PVT), and to construct a prognostic prediction model based on machine learning methods.Methods:The clinical data of 388 patients with liver cirrhosis and PVT admitted to the Fifth Medical Center of PLA General Hospital from January 2022 to April 2024 were retrospectively collected and analyzed, including 243 males and 145 females, aged (56.9±10.9) years. A total of 388 patients were randomly divided into the training set ( n=310) and the testing set ( n=78) in a 4∶1 ratio. The Boruta algorithm was used to screen the key features in the training set, and then four machine learning algorithms, including random forest, support vector machine, generalized linear model and Bayesian, were used to establish a survival prediction model. Model performance was evaluated by the receiver operating characteristic (ROC) curves of the test set and the training set. The patients were followed up for 1 year for survival. Sort the importance of features based on the SHAP value. Results:There were 250 patients (80.6%) who survived and 60 (19.4%) who died. The model for end-stage liver disease score, total bilirubin, serum creatinine, prothrombin time, international normalized ratio, D-dimer, white blood cell count, severe ascites ratio, and Child-Pugh grade C ratio of liver function in the death group were higher than those in the survival group, and the red blood cell count and hematocrit were lower than those in the survival group, and the differences were statistically significant (all P<0.05). The areas under the ROC curve for predicting survival by random forest, support vector machine, generalized linear model and Bayesian model were 0.92, 0.78, 0.81 and 0.71 in the training set, and the area under the ROC curve in the testing set were 0.81, 0.72, 0.67 and 0.68, respectively. Random forest had the best prediction performance, with an accuracy of 81.7%, a sensitivity of 84.6%, and a specificity of 76.9% in the testing set. In the analysis of the importance of characteristic parameters of the random forest model, total bilirubin, red blood cells, hematocrit, serum creatinine, ascites classification, etc. had a relatively high contribution to the model. Conclusion:In the survival prediction model of patients with liver cirrhosis and PVT based on machine learning algorithm, the random forest model had high prediction performance, and total bilirubin may be the most important factor affecting the survival prognosis of patients.

OBJECTIVE To retrospectively investigate the incidence of surgical site infection(SSI),distribution and drug resistance of pathogens in 53 hospitals of Suzhou area from 2020 to 2023 so as to provide strategies for pre-vention and control of the hospital-associated infections in Suzhou area.METHODS The data regarding the SSI,distribution and drug resistance of pathogens were statistically analyzed through Suzhou City Regional Hospital In-fection Surveillance Platform.RESULTS The incidence of SSI was 0.24％among the 53 hospitals from 2020 to 2023.Staphylococcus aureus,Enterococcus faecalis,Staphylococcus epidermidis,Enterococcus faecium and Staphylococcus haemolyticus ranked the top 5 species of gram-positive bacteria;Escherichia coli,Klebsiella pneumoniae,Pseudomonas aeruginosa,Enterobacter cloacae and Acinetobacter baumannii ranked the top 5 spe-cies of gram-negative bacteria.There were significant differences in the distributions of S.aureus,K.pneumoniae and A.baumannii in the superficial,deep and organ cavities(P＜0.05).The isolation rate of carbapenem-resistant Acinetobacter baumannii(CRAB)was 69.23％,and the isolation rate of methicillin-resistant Staphylococcus au-reus(MRSA)was 42.14％.The drug resistance rate of the S.aureus strains to oxacillin reached up to 40.24％;the drug resistance rates of the A.baumannii to imipenem and meropenem reached up 63.00％and 65.80％,re-spectively.The drug resistance rates of the K.pneumoniae strains to imipenem and meropenem approximated to 30％,and the drug resistance rate to tigecycline was 19.84％.CONCLUSIONS The total incidence of SSI shows a downward trend in the 53 hospitals of Suzhou area.The S.aureus is the major species of pathogens,and some of the pathogens show high drug resistance rates.

Galectin-9 (Gal-9), a member of the β-galactoside-binding lectin family, is widely expressed in various tissues and cells. It can specifically bind to multiple glycoprotein receptors, including the receptors of Tim-3, CD44, 4-1BB/CD137, and Dectin-1, thereby regulating the activity of immune cells and participating in crucial physiological and pathological processes such as immune regulation and tumor development. Given its role in immunomodulation, Gal-9 is considered a potential target for immunotherapy, showing promising prospects in the treatment of various diseases, including autoimmune disorders, transplantation rejection, pregnancy complications, inflammation, infection, and cancer. This review summarizes the biological effects mediated by Gal-9 upon binding to its receptors, which may help to explore the potential application value of Gal-9 in clinical diagnosis and therapy.

Objective To investigate the current status of knowledge,attitude,and practice(KAP)re-garding the clinical application of graduated compression stockings(GCS)for preventing venous thromboem-bolism(VTE)among medical staff and analyze its influencing factors.Methods Through convenience sam-pling,5 706 medical staff from 85 hospitals in Chongqing were surveyed using the"Questionnaire on KAP of Clinical Application of GCS for VTE Prevention"between March 16 and 30,2024.Univariate and multiple lin-ear stepwise regression analyses were conducted to explore influencing factors.Results The scores for knowl-edge,attitude,and practice in the clinical application of GCS for VTE prevention among healthcare workers were(37.77±10.56),(16.85±3.05),and(24.85±7.51),respectively.Age,highest education level,seniori-ty,department,whether they had received GCS application training,hospital level,whether the hospital passed the national venous thrombosis prevention center certification,and GCS procurement channels were influen-cing factors for knowledge scores.Professional title,whether they had received GCS application training,hos-pital level,and whether the hospital passed the national venous thrombosis prevention center certification were influencing factors for attitude scores.Gender,age,highest education level,seniority,department,whether they had received GCS application training,hospital level,whether the hospital passed the national venous thrombo-sis prevention center certification,and GCS procurement channels were influencing factors for behavior scores.Conclusion Healthcare workers'knowledge of clinical application of GCS for VTE prevention is at a medium level,their attitude toward clinical application is positive,and practical behaviors are basically in compliance with standards.Hospital managers should emphasize training and assessment on clinical application of GCS for healthcare workers,strengthen quality control in practical implementation,and ensure patients receive stand-ardized mechanical VTE prevention.