ObjectiveTo observe the clinical efficacy of Anzi Tiaochong decoction combined with aspirin and the effects of this therapy on the peripheral blood phospholipid antibody titers， coagulation function， and CD19⁺CD24^hiCD27⁺regulatory B （Breg） cells in patients with obstetric antiphospholipid syndrome （OAPS） （pattern of kidney deficiency and blood stasis）. MethodsPatients who meet the inclusion criteria were randomly allocated into an observation group （50 patients， with 4 patients dropped out and 46 patients completed） and a control group （50 patients， with 2 patients dropped out， 1 patient excluded， and 47 patients completed） through a random number table method. The control group was treated with aspirin enteric-coated tablets， 75 mg/time， once a day， and the observation group with Anzi Tiaochong decoction， 1 bag/day on the basis of the therapy in the control group. The treatment course for both groups was 8 weeks， and the patients were followed up for 4 weeks. The traditional Chinese medicine （TCM） symptom scores， titers of peripheral blood phospholipid antibodies ［anti-cardiolipin antibody IgM （ACA IgM）， anti-cardiolipin antibody IgG （ACA IgG）， anti-β₂-glycoprotein 1 antibody IgM （β₂GP1-IgM）， and anti-β₂-glycoprotein 1 antibody IgG （β₂GP1-IgG）］， D-dimer （D-D）， thromboelastography parameters ［clotting factor activity （R）， platelet function maximum amplitude （MA）， coagulation composite index （CI）， and clot strength （G）］， CD19⁺CD24^hiCD27⁺ Breg expression rate， and adverse drug reactions were recorded for the two groups before and after treatment. ResultsAfter treatment， both groups showed decreased ACA IgM， ACA IgG， β₂GP1-IgM， β₂GP1-IgG， D-D， MA， and G （P<0.05） and increased R （P<0.05）. There was no statistically significant difference in CI. Compared with the control group， the observation group showed more significant decreases in TCM symptom scores and phospholipid antibody titers （P<0.05）. After treatment， the expression rate of Breg in the observation group was higher than that before treatment （P<0.05）.There was no significant difference in Breg expression rate before and after treatment in the control group. Neither group experienced significant adverse reactions. ConclusionAnzi Tiaochong decoction combined with aspirin can alleviate the symptoms， reduce the phospholipid antibody titers， and restore the coagulation status of patients with obstetric antiphospholipid syndrome （pattern kidney deficiency and blood stasis）. It may exert the therapeutic effects by regulating Breg to maintain the patient's immune balance.

ObjectiveTo observe the clinical efficacy and safety of Shenshuai Guanchang prescription in improving the intestinal barrier function，reducing non-indole uremic toxins，ameliorating micro-inflammatory state，and delaying renal function progression in non-dialysis patients with chronic kidney disease （CKD） stage 4-5. MethodsA total of 80 patients with CKD stage 4-5 who did not receive dialysis replacement therapy and were diagnosed with the syndrome of spleen and kidney deficiency，blood stasis and dampness turbidity were randomly assigned into a control group and a treatment group，with 40 patients in each group. The control group received conventional basic treatment and Western medicine symptomatic treatment，while the treatment group received combined intervention with Shenshuai Guanchang prescription through retention enema in addition to the treatment of the control group. Both groups had a treatment course of 4 weeks. The two groups were compared regarding the changes in urine toxin indicators ［p-cresyl sulfate （PCS） and trimethylamine oxide （TMAO）］，intestinal barrier indicators ［D-lactic acid （D-LA），lipopolysaccharide （LPS），and intestinal fatty acid-binding protein （I-FABP）］，renal function indicators ［serum creatinine （SCr），blood urea nitrogen （BUN），and estimated glomerular filtration rate （eGFR）］，and micro-inflammatory state indicators ［interleukin-6 （IL-6），tumor necrosis factor-α （TNF-α），and neutrophil-to-lymphocyte ratio （NLR）］ before and after treatment. The therapeutic effects were evaluated from three aspects：The efficacy regarding traditional Chinese medicine （TCM） symptom scores，the efficacy regarding laboratory indicators，and comprehensive efficacy. The safety of the clinical research drugs used by both groups of patients was also observed. ResultsA total of 37 cases in the treatment group and 38 cases in the control group completed the observation. After treatment，the treatment group showed declined levels of PCS，TMAO，D-LA，SCr，TNF-α，and NLR，spleen and kidney deficiency symptom score，blood stasis and dampness symptom score，and total symptom score （P<0.05），and increased eGFR （P<0.05）. Moreover，the treatment group had lower levels of PCS，TMAO，D-LA，I-FABP，IL-6，and TNF-α，spleen and kidney deficiency symptom score，blood stasis and dampness symptom score，and total symptom score （P<0.05），higher response rate regarding TCM symptoms （χ²=6.68，P<0.05），and higher comprehensive efficacy （χ²=4.08，P<0.05） than the control group. No significant abnormalities were observed in the safety indicators of the two groups of patients. During the treatment period，adverse reactions were reduced after symptomatic treatment，and no serious adverse reactions occurred. ConclusionShenshuai Guanchang prescription can alleviate the clinical symptoms，improve the intestinal barrier function，reduce non-indole-type uremic toxins，alleviate the micro-inflammatory state，and has good clinical application safety of non-dialysis patients with CKD stage 4-5.

Gongfa is an essential approach to prevent and treat diseases in traditional Chinese medicine(TCM),often used to prevent a disease before it arises.Guided by TCM and modern scientific theories,the Tuina(Chinese therapeutic massage)Gongfa prescription theory implements the principle,method,prescription,and form in clinical pattern-identified treatment to prescribe the corresponding Tuina Gongfa prescription,i.e.,to prescribe a basic Tuina Gongfa prescription,specifically for a systemic disease,and modify Gongfa forms based on the basic prescription according to different patterns.The Gongfa prescription for pulmonary diseases designs corresponding Gongfa forms from six perspectives:lifting Yang,securing the exterior,opening the orifices,soothing the chest,harmonizing the stomach,and regulating Qi to prevent and treat diseases.The application of the pulmonary Gongfa prescription indicates the potential to apply the Tuina Gongfa prescription theory for the clinical prevention,treatment,and rehabilitation of disorders of other systems,thereby fully realizing the unique role of TCM Gongfa.

Mineral oil contaminants composed of saturated hydrocarbons(MOSH)and aromatic hydrocarbons(MOAH)are commonly found in edible oils and related processed foods.Currently,the analysis of mineral oils primarily employs the liquid chromatography-gas chromatography-flame ionization detector(LC-GC-FID)method.Liquid chromatography is used to purify and separate MOSH and MOAH from interfering substances,and the interface technology transfers MOSH or MOAH into different GC channels for quantitative analysis.The MOSH and MOAH chromatograms typically exhibit an irregular hump shape,with sharp peaks above the hump representing natural hydrocarbon interferences,which usually do not affect the identification of the hump profile.However,when the purification of interferences is incomplete,they can form one or more gaps above the hump,interfering with the accurate judgment and delineation of the hump profile,and leading to poor reproducibility of analysis results of mineral oil.In this study,an algorithm that mimicked the manual drawing of the hump shape or contour was proposed for automatically determining the mineral oil hump contour(i.e.,the lower envelope line).The algorithm used a multiple second-order difference quotient filtering method to identify and remove the gaps above the hump.The method involved first searching and determining the lowest value of the mineral oil hump,which was the valley point sequence,and then applying second-order difference quotient filtering to the valley point sequence.Compared to the hump,the second-order difference quotient of sharp peaks was a significantly larger negative value.By filtering out the points in the valley point sequence with larger negative second-order difference quotients(or multiple second-order difference quotients),the sharp peaks above the hump were removed.To verify the accuracy of the algorithm,42 different types of samples,including edible oils and milk powders were analyzed,using both the automatic algorithm and manual methods.The results showed that there were no significant differences in the detected mineral oil contents between these two methods.

A pyrene-phenol-based fluorescent probe PyP which showed typical intramolecular charge transfer(ICT)and monomer-excimer activities was synthesized by using pyrene carboxaldehyde hydrazone and 4-tert-butyl-2,6-diformylphenol as the raw materials.The effects of solvents on PyP were studied,and the results showed that the color of protic polar solvents(Ethanol,N,N-dimethylformamide,methanol and H2O)were successfully identified.Based on the solvent polarity-regulated PyP monomer-excimer switching,the rapid and highly sensitive ratiometric probe,"Turn-off"and"Turn-on"multimodal probes were established for detection of trace water content in organic solvents(Dimethyl sulfoxide,N,N-dimethylformamide,ethanol and methanol),with detection limits(3σ/k)of 0.0021％,0.046％,0.062％and 0.024％.The method was successfully used to detect water content in dimethyl sulfoxide,N,N-dimethy lformamide,ethanol and methanol commercial organic solvents,with recoveries ranging from 97.2％to 108.0％.The developed method showed good accuracy and stability,and had good application prospect.

Aim To design and synthesize a series of glycyrrhetinic acid derivatives by using glycyrrhetinic acid as the parent nucleus,screen their antitumor activ-ities,and investigate the in vitro and in vivo antitumor effects and mechanisms of the most active compound.Methods MTT assay was used to screen for the com-pound with the most potent antitumor activity.MTT as-say,wound healing assay,colony formation assay and Transwell migration assay were used to evaluate the effects of the compound on tumor cell viability and mi-gration.Flow cytometry was employed to assess the im-pact of the compound on tumor cell cycle progression and apoptosis.Western blot was conducted to verify the effects on the expression of pro-apoptotic proteins Bax,caspase-3 and cleaved caspase-3.A mouse model of hepatocellular carcinoma ascites tumor was estab-lished to examine the antitumor effects of the compound in vivo.Results Compound C22 was identified as having the most significant inhibitory effect on hepato-cellular carcinoma cells.C22 inhibited the viability and migration of hepatocellular carcinoma cells in a time and concentration-dependent manner.C22 upreg-ulated the expression of pro-apoptotic proteins Bax,caspase-3 and cleaved caspase-3 in hepatocellular car-cinoma cells,induced apoptosis,and arrested the cell cycle in the G0/G1 and S phases.C22 significantly re-duced the growth of mouse hepatocellular carcinoma as-cites tumors and prolonged survival.Conclusion Glycyrrhetinic acid derivative C22 significantly inhibits the viability and migration of hepatocellular carcinoma cells in vitro and in vivo,and induces cell cycle arrest and apoptosis.

Objective:To assess the core competencies of internal medicine residents undergoing standardized residency training and to explore the effectiveness of core competency evaluation on mobile devices.Methods:The mobile formative evaluation module was developed based on the "Xueyiku" teaching management platform. From January to December 2023, clinical teachers were asked to evaluate 150 internal medicine residents based on the "Resident Core Competency Milestone Evaluation System in China Consortium of Elite Teaching Hospitals", and the results were analyzed using non-parametric tests.Results:Among the six core competencies of internal medicine residents, professionalism received the highest score, whereas teaching skill received a lower score (97.50 vs. 90.00; H=167.31, P<0.001). Second-year residents had significantly higher scores than first-year residents (93.00 vs. 90.00; P<0.001), but similar scores to third-year residents (93.00 vs. 93.00; P>0.05). In addition, there was no significant difference in score among residents with different medical education backgrounds ( P>0.05). Conclusions:More emphasis should be placed on improving the teaching skills of internal medicine residents, along with the implementation of tiered progressive training. The mobile core competency evaluation is an effective means for assessing the comprehensive skills of residents in a timely manner.

Objective: Adolescent depression is a highly prevalent and disabling mental disorder with unclear pathophysiology and unfavorable treatment outcomes. Recent efforts have been focusing on searching for biomarkers as specific indicators of adolescent depression. We performed a systematic literature review and meta-analysis, specifically including studies with healthy control groups as an inclusion criterion. This approach helps to avoid confounding factors and provides more accurate results regarding the inflammatory and immune biomarkers associated with adolescent depression. Methods: Three electronic databases were searched for studies comparing the means and changes in the biomarkers between depressed adolescent patients and healthy controls published in English until February 2024. Two authors independently performed the screening, quality assessment, and data extraction of the studies. A meta-analysis was conducted on outcomes reported by two or more studies using a random-effects model and presented Forrest plots and test statistics (I2) for heterogeneity analysis. Results: Nine studies were included in the review, including seven case-control studies and two cross-sectional studies. These studies included 24 target biomarkers, 13 of which were quantified in 2 or more studies. Compared to the healthy controls, the depressed adolescents had significantly higher values in ten indicators. Additionally, the depressed adolescents had lower procalcitonin levels than the healthy controls. The two groups showed no significant differences in the remaining 13 biomarkers. Conclusion Our findings offer fresh insights into the pathophysiology of inflammatory and immune aspects of adolescent depression and provide helpful guidance in developing targeted and effective intervention and prevention strategies to address adolescent depression.

Objective:To investigate the feasibility of the combination of free breathing with the high-threshold, short-delay technique in reducing radiation dose and the volumes of iodinated contrast agent in coronary computed tomography angiography (CCTA) for obese patients.Methods:The data of 73 obese patients with weights > 85 kg and body mass indices (BMIs) > 30 kg/m 2 who received CCTA in the Radiology Department of the Peking University Third Hospital from February 2023 to May 2024 were prospectively collected. These patients were divided into a control group (31 patients) and an experimental group (42 patients). Data were collected from the control group and experimental groups under breath-holding and free-breathing conditions, respectively. The bolus tracking thresholds, delay times, and ICA injection durations were set at 100 HU, 7 s, and 12 s for the control group and at 250 HU, 2 s, and 8 s for the experimental group, respectively. Other scanning and reconstruction parameters of both groups were consistent. The CT values and their standard deviations ( SD) of both groups were assessed and compared, with the CT values involving the lumens of the aorta (AO) root, left anterior descending (LAD), left circumflex artery (LCX), and right coronary artery (RCA). The signal-to-noise ratios (SNR) and contrast-to-noise ratio (CNR) were also calculated. The subjective assessment of image quality was performed for the 18 coronary artery segments using a 4-point scale. The effective radiation doses ( E) and the volumes of iodinated contrast agent of both groups were recorded and compared. The statistical differences in the aforementioned parameters between the groups were tested and analyzed using the analysis of variance (ANOVA), the Mann-Whitney U test, or the χ 2 test. With the results of the ICA as the gold standard, the diagnostic performance of the combination of free-breathing with the high-threshold, short-delay technique in CCTA for obese patients was assessed. Results:There was no statistically significant difference ( P > 0.05) in coronary artery images between both groups, specifically regarding the CT, SNR, and CNR values of the lumens of the AO roots, LAD, LCX, and RCA, as well as the SD values of the AO roots. Both groups received subjective scores of ≥ 3 for coronary artery images, meeting the diagnostic criteria, with no statistically significant differences ( P > 0.05). Compared with the results of the ICA, the analyses of the coronary artery segments of 23 patients from the experimental group, revealed that the accuracy, sensitivity, and specificity of CCTA in the diagnosis of > 50% stenosis were 89%, 86%, and 97%, respectively. Compared to that (45 ml) of the control group, the volume (30 ml) of iodinated contrast agent of the experimental group decreased by 33.3%, with no statistically significant difference in the effective radiation dose ( E) between both groups ( P > 0.05). Conclusions:The combination of free breathing with the high-threshold, short-delay technique can further reduce the volume of the ICA for obese patients while maintaining high CCTA image quality and diagnostic performance.