ObjectiveTo identify the pathogen species responsible for the wilt disease of Tetradium ruticarpum in Chongqing， investigate there biological characteristics， and screen effective fungicides， so as to provide a theoretical basis for disease control in production. MethodsThe pathogen was isolated via the tissue culture method. Pathogenicity was verified according to Koch's postulates. The pathogen was identified based on morphological characteristics and multi-gene phylogenetic analysis. The mycelial growth rate method was used for biological characterization of the pathogen and fungicide screening. ResultsThe pathogen colonies were nearly circular with irregular edges， white， short， velvety aerial hyphae， and pale purple undersides. Macroconidia were colorless， sickle-shaped， with 3-5 septa， while microconidia were transparent， elliptical， aseptate or with 1-2 septa. Multi-gene phylogenetic analysis showed that the pathogen clustered in the same clade as Fusarium fujikuroi with 100% support， which， combined with morphological characteristics， identified the pathogen causing wilt of T. ruticarpum in Chongqing as F. fujikuroi. The optimal conditions for the mycelial growth of F. fujikuroi were mung bean agar （MBA） with glucose as the carbon source， beef extract and yeast powder as nitrogen sources， 28 ℃， pH 7.0， and alternating light/dark conditions. The optimal conditions for sporulation were potato dextrose agar （PDA） with glucose as the carbon source， beef extract as the nitrogen source， 28 ℃， pH 7.0， and complete darkness. Among chemical fungicides， phenazine-1-carboxylic acid exhibited the strongest inhibitory effect on F. fujikuroi. Shenqinmycin and tetramycin were the most effective bio-fungicides. ConclusionThis study is the first to report F. fujikuroi as the causal agent of wilt disease in T. rutaecarpa. The chemical fungicide phenazine-1-carboxylic acid and the bio-fungicides shenqinmycin and tetramycin showed strong inhibitory effects against F. fujikuroi.

OBJECTIVE To study the pharmacokinetic characteristics of ciprofol in pregnant and fetal rats， and provide reference for the application of ciprofol in cesarean section. METHODS Eight pregnant rats were selected. A single dose of 2.4 mg/kg of ciprofol was administered via the tail vein. One fetal rat was selected at 2， 4， 8， 12， 16， 25， 35， 45， 60， and 90 minutes respectively after ciprofol administration. Subsequently， whole blood samples were collected simultaneously from both the pregnant rats and fetal rats. HPLC-MS/MS method was used to determine the concentration of ciprofol in the bodies of pregnant and fetal rats. The ratios of fetal-to-maternal blood concentrations （F/M ratios） at each time point were calculated， and the F/M-time curves were plotted. Subsequently， non-compartmental pharmacokinetic parameters were computed using DAS 2.0 software. RESULTS Compared with pregnant rats， cmax， AUC0-90 min and AUC0-∞ of ciprofol in fetal rats were decreased significantly， while MRT was increased significantly （P＜0.05）. The F/M curve of ciprofol initially increased and then decreased， and between 0.16- 0.84， reaching a maximum value of 0.84 at 45 minutes. CONCLUSIONS Ciprofol can penetrate the placental barrier， and there are significant differences in pharmacokinetic parameters between pregnant and fetal rats. Moreover， the exposure level of ciprofol in fetal rats is much lower than that in pregnant rats. Therefore， ciprofol shows promise as an ideal anesthetic agent for cesarean section delivery.

To develop a method for determining the antibody-dependent cell-mediated phagocytosis (ADCP) activity of human epidermal growth factor receptor 2 (HER2)-targeted antibody drug conjugate (ADC) based on the reporter gene assay, we established an ADCP activity assay with Jurkat/NFAT/FcγRIIa cells as the effector cells and BT474 as the target cells. Then, the target cell density, the ratio of effector to target cells, the target cell adhesion time, the incubation time for drug administration, and the induction time after adding effector cells were optimized by the method of design of experiment (DOE). The method showed a significant dose-response relationship, which was complied with the four-parameter equation: y=(A-D)/[1+(x/C)^B]+D. The durability ranges of the target cell density, the ratio of effector to target cells, the target cell adhesion time, the incubation time for drug administration, and the induction time after adding effector cells were (2.5-4.0)×10⁵ cells/mL, 3-5, 1.0-2.0 h, 0 h, and 5.0-6.0 h, respectively. The results of the methodological validation showed that the linear equation was y=1.106 8x-0.011 6, r=0.969 2. The established method showed the relative accuracy ranging from -6.59% to 2.98% and the geometric coefficient of variation less than 11% in the intermediate precision test. Furthermore, the method was target-specific. The method was then applied to the determination of ADCP activity of HER2-targeted ADC, demonstrating the result of (103.5±5.7)%. We developed a reporter gene assay for determining the ADCP activity of HER2-targeted ADC and the assay demonstrated high accuracy and good reproducibility, which proposes a highly efficient and approache for evaluating ADCP effect of this HER2-targeted ADC, and also provides a referable technique for characterizing the Fc effector functions of ADCs with diverse targets.
Humans ; Receptor, ErbB-2/immunology* ; Phagocytosis/drug effects* ; Immunoconjugates/immunology* ; Genes, Reporter ; Antibody-Dependent Cell Cytotoxicity ; Jurkat Cells

Platelet transfusion is one of the critical clinical therapies of neonatal thrombocytopenia and significant preventive measures of bleeding diseases in preterm infants.The platelet transfusion rate is high in clinical practice，whereas some controversies emerge in its clinical application.Platelet transfusion decision-making should take into account the platelet count and the causes of thrombocytopenia.In addition，the presence of bleeding tendency and platelet effects on other systemic disorders should be considered.Clinicians often need to make rapid decisions about whether to transfuse platelets in a critically situation.On the basis of the comprehensive overview of issues that are closely pertinent to the field of clinical practice，this article is dedicated to elucidate the advancements in clinical research pertaining to neonatal platelet transfusions，aiming to serve as a reference for clinicians when making transfusion decisions and to chart a course for future clinical investigations.

Objective:To demonstrate any role of iron metabolism in the inhibition by aerobic exercise of myocardial apoptosis in atherosclerotic mice.Methods:Eight-week-old male ApoE -/- gene knockout mice were randomly divided into a control group, a model group and an aerobic exercise group, each of 9. A model of atherosclerosis was induced in the rats of the model and aerobic exercise groups by feeding them a " western" diet for 12 weeks. During that time the aerobic exercise group only was given aerobic exercise training. The control group was fed normal rat chow during that period. Myocardial apoptosis was detected using TUNEL staining, and the expression and localization of ferritin heavy chain 1 (FTH1) and glutathione peroxidase 4 (GPX4) in the myocardium used immunohistochemistry. Western blotting was applied to detect the FTH1 and GPX4 protein levels, and iron deposition in the myocardium was detected using Prussian blue staining. Iron, lipid peroxide malondialdehyde (MDA) and glutathione peroxidase (GSH-PX) in the myocardial tissue were also measured. Results:The TUNEL staining showed significant apoptosis in the model group. In the aerobic exercise group it was significantly less. There was obvious iron deposition in the myocardia of the model group, which was significantly reduced in the aerobic exercise group. The average FTH1 and GPX4 levels in the model group were lower than in the control group, and significantly elevated in the aerobic exercise group.in the aerobic exercise group than in the model group. Iron and MDA levels in the aerobic exercise group were significantly lower, on average, than among the model group, while that of GSH-PX was significantly higher.Conclusions:Aerobic exercise can significantly inhibit cardiomyocyte apoptosis in atherosclerotic mice. The mechanism may be closely related to better iron metabolism, reduced oxidative stress and the inhibition of iron overload.

Objective:To explore the association between glutamyl transpeptidase (GGT) trajectories and new-onset metabolic syndrome to provide insights for the prevention and treatment of metabolic syndrome.Methods:A total of 3 209 subjects who met the inclusion criteria were enrolled in the study cohort of physical examination population. The GGT levels before follow-up were classified by R LCTMtools program into 3 GGT trajectory groups: low-stable group, medium-stable group and high-stable group. Cox proportional hazards regression model was used to analyze the correlation between different GGT trajectories and new-onset metabolic syndrome.Results:At the end of follow-up in 2020, the cumulative incidence of metabolic syndrome was 7.0%, and the incidence of metabolic syndrome in the low-stable group, medium-stable group and high-stable group were 3.9%, 11.4%, and 15.0%, respectively, showing a growth trend ( P<0.001). After adjusting for multiple confounding factors by Cox proportional hazards regression model, the risk of metabolic syndrome in medium-stable group and high-stable group increased in the total population. The hazard ratios (95% CI)for the high stable group in males and the medium-stable group in females were 1.67(1.07-2.60) and 3.29(1.14-9.53), respectively, compared with their respective low-stable group. Conclusion:Elevated longitudinal trajectory of GGT is a risk factor for new-onset metabolic syndrome, the risk of metabolic syndrome in the total population increased with the increase of long-term GGT level. It is recommended to maintain the long-term level of GGT at about 28 U/L in males and 14 U/L in females, respectively, to achieve the goal of early prevention of metabolic syndrome.

ObjectiveTo understand the current research status, research hotspots and development trends of constraint-induced movement therapy (CIMT) in the field of rehabilitation. MethodsThe relevant articles of CIMT in rehabilitation from January, 2000 to October, 2022 in CNKI and Web of Science were retrieved. The authors, institutions, countries, keywords and burst words were extracted with CiteSpace 6.1.R3 to draw knowledge mapping. ResultsA total of 1 165 articles were included, 359 articles in Chinese and 806 in English. The trend of annual publications was generally consistent, and after a period of rapid growth, the current annual publications showed a fluctuating trend. There was more cooperation among the institutions in English articles, with geographical limitation. The institutions in Chinese articles had the problem of insufficient cooperation. The researches mainly focused on the application of CIMT in different diseases, the improvement of motor function by CIMT, the application of CIMT in combination with other therapies, and the study of the related mechanisms of CIMT. In recent years, Chinese burst keywords included modified constraint-induced movement therapy, stroke hemiparesis, clinical efficacy and repetitive transcranial magnetic stimulation; English burst keywords included transcranial direct current stimulation, non-invasive brain stimulation, and unilateral cerebral palsy. ConclusionResearch on CIMT in the field of rehabilitation is in a period of steady development, and CIMT combined with non-invasive brain stimulation is likely to be a hotspot in future research.

Objective:To explore the long-term effect of endoscopic radiofrequency ablation for the treatment of unresectable ampullary carcinoma.Methods:Clinical data of patients with ampullary carcinoma who received endoscopic radiofrequency ablation in the Third Affiliated Hospital of Naval Medical University from January 2012 to May 2019 were retrospectively collected, including basic information, frequency of radiofrequency ablation, the type of biliary stent, postoperative complications, and follow-up. Kaplan-Meier method was used to analyze the survival of patients after endoscopic radiofrequency ablation. Relationship between frequency of radiofrequency ablation, type of biliary stent and overall survival time was analyzed.Results:A total of 50 patients were enrolled, including 31 males and 19 females, aged 73.0±9.7 years. Twenty-five patients (50.0%) underwent 1 radiofrequency ablation treatment, while 25 patients (50.0%) underwent radiofrequency ablation treatments more than twice. Postoperative complications occurred in 6 patients (12.0%), all of which were mild symptoms. The average follow-up was 22.3 months, with a total of 39 (78.0%) deaths, 5 (10.0%) lost to follow-up, and 6 (12.0%) surviving. The median overall survival time was 16.9 (95% CI: 9.1-24.8) months, with cumulative survival rates of 62.0%, 38.5%, 27.0%, and 12.6% at 1, 2, 3, and 5 years, respectively. The median overall survival time of those treated with radiofrequency ablation ≥2 times showed a trend of prolongation compared to patients treated once, but the difference was not statistically significant [26.7 (95% CI: 9.7-43.7) months VS 12.6 (95% CI: 4.9-20.3) months, χ2=3.049, P=0.081]. Plastic stents were used in 32 patients (64.0%) and metal stents in 18 patients (36.0%). There was no significant difference in median overall survival time between patients using metal and plastic stents [17.1 (95% CI: 6.1-28.0) months VS 15.9 (95% CI: 6.9-24.9) months， χ2=0.029， P=0.865]. Conclusion:Endoscopic radiofrequency ablation is a safe treatment for unresectable ampullary carcinoma, and multiple consecutive treatments may increase the survival benefit.

Objective:To investigate the efficacy of endoscopic stent placement for patients with Bismuth type Ⅳ hilar cholangiocarcinoma.Methods:Data of 229 patients with unresectable Bismuth type Ⅳ hilar cholangiocarcinoma who successfully underwent endoscopic stent placement at the Department of Endoscopy, the Third Affiliated Hospital of Naval Medical University from January 2002 to January 2019 were retrospectively analyzed. Outcomes included clinical success rate, complication incidence, stent patency period and overall survival time. The patency of stents and overall survival time of patients were estimated by using the Kaplan-Meier method. The independent predictors for stent patency and overall survival of patients were analyzed by a multivariate Cox proportional regression model.Results:The overall clinical success rate was 78.2% (179/229). The incidence of early cholangitis after endoscopic retrograde cholangiopancreatography was 20.5% (47/229). The median stent patency and overall survival time were 5.7 (95% CI: 4.8-6.7) months and 5.1 (95% CI: 4.2-6.0) months, respectively. Further multivariate Cox regression analysis showed that metal stent ( P<0.001, HR=0.452, 95% CI: 0.307-0.666) and bilateral stents with bilateral angiography ( P=0.036, HR=0.644, 95% CI: 0.427-0.971) were independent predictors of stent patency; total bilirubin>200 μmol/L ( P=0.001, HR=1.627, 95% CI: 1.208-2.192), metal stent ( P=0.004, HR=0.636, 95% CI: 0.467-0.866) and antitumor therapy ( P<0.001, HR=0.439, 95% CI:0.308-0.626) were independent predictors of overall survival. Conclusion:There is high incidence of cholangitis in patients with unresectable Bismuth type Ⅳ hilar cholangiocarcinoma treated with endoscopic stenting. Longer stent patency can be achieved with metal stent placement and bilateral drainage. In addition, metal stent for drainage and antitumor therapy can also help increase the survival benefit.

Objective:To construct an evaluation index system for the core competence of hospital specialist service operation assistants and provide reference for the evaluation of such competence.Methods:From January to March 2022, literature analysis and behavioral event interviews were used to initially establish a core competence evaluation index system of hospital specialist service operation assistants, based on the Donabedian model. Subsequently, the Delphi expert consultation method was applied to conduct correspondence consultation, inviting experts to evaluate the contents and importance of the index system, using analytic hierarchy process to determine the weights of the indexes at all levels.Results:Two rounds of expert consultation were carried out, and the valid recovery rate of the questionnaire was 100%. The familiarity coefficient of the second round of correspondence was 0.87, the basis of judgment coefficient was 0.90, and the authority coefficient was 0.89. The final evaluation index system for core competence of hospital specialist service operation assistant consisted of 3 first-level indexes, 13 second-level indexes and 81 third-level indexes. The weight of the first-level index structure index was 0.266, and the highest weight among the second-level indexes was the operational development ability (0.083), while the highest weight among the third-level indexes of operational development ability was the comprehensive coordination ability (0.193); The weight of the first-level index process index was 0.405, and the corresponding second-level and third-level indexes with the highest weight were department operation practice work (0.157) and reasonable resource allocation (0.303), respectively; The weight of the first-level index result index was 0.329, and the corresponding second-level and third-level indexes with the highest weight were the weight of medical quality and safety (0.103) and drug adverse reaction reporting rate (0.237), respectively.Conclusions:The evaluation index system constructed in this study proves scientific and reasonable in weight assignment, proving a reference for the management of the specialist service operation assistants.