Objective: To explore the impact of sleep quality, experience of childhood maltreatment, and their interaction on depressive symptoms among middle school students, so as to provide the reference for early intervention of depressive symptoms among middle school students. Methods: From September to December 2023, a questionnaire survey was conducted among 1 231 students from two secondary schools in Harbin, Heilongjiang Province by a convenient sampling method. The survey included general demographic information, Childhood Trauma Questionnaire Short Form, Pittsburgh Sleep Quality Index and Short Version of Center for Epidemiological Studies Depression Scale. The Chi square test was used to analyze the differences in depressive symptom, sleep quality and childhood maltreatment among students with different demographic characteristics. Correlation analysis was conducted using Logistic regression, and interaction analysis was performed by both additive and multiplicative interaction models. Results: The detection rate of depressive symptoms among middle school students was 22.7%, and the rate for high school students (35.2%) was significantly higher than that for middle school students (17.0%) ( χ 2=50.35, P <0.01). The detection rates of depressive symptoms among middle school students with a history of childhood maltreatment and poor sleep quality were 45.8% and 44.0%, respectively. Multivariate Logistic regression analysis showed that compared to students without a history of childhood maltreatment, students with a history of childhood maltreatment had a higher risk of depressive symptoms ( OR =4.49，95% CI =3.31~ 6.09 , P <0.01);students with poor sleep quality had a higher risk of depressive symptoms than students with good sleep quality ( OR = 5.99，95% CI =4.37~8.22, P <0.01).The interaction results showed that the presence of childhood maltreatment and poor sleep quality had an additive interaction on the occurrence of depression in middle school students. Compared with students without childhood maltreatment and having good sleep quality, students with childhood maltreatment and poor sleep quality had a 22.49 times higher risk of developing depression ( OR =22.49，95% CI =14.22~35.59, P <0.01). Conclusion Depressive symptoms among middle school students are associated with childhood maltreatment and poor sleep quality, and there is an additive interaction between childhood maltreatment and poor sleep quality on the impact of depressive symptoms.

Objective Based on the radiomics features extracted from the unenhanced CT images of the lower abdomen, a variety of machine learning models were constructed to explore their application value in the assessment of split renal function. Methods A retrospective analysis was conducted on the unenhanced CT images from 240 single kidneys in patients with clinically suspected renal dysfunction. Based on the results of single-photon emission computed tomography renal dynamic imaging, the cases were classified into the normal glomerular filtration rate group (n=118) and the decreased glomerular filtration rate group (n=122). The region of interest was outlined on the unenhanced CT images and the radiomics features were extracted. The features were selected by correlation analysis and least absolute shrinkage and selection operator, and the machine learning models were constructed based on the algorithms of decision tree, support vector machine, random forest, logistic regression, and extreme gradient boosting. Area under the receiver operating characteristic curve, accuracy, sensitivity, and specificity were calculated to compare the performance of different models. Results Sixteen radiomics features were selected for constructing the machine learning models. The support vector machine model showed relatively high performance for the assessment of split renal function on the test set, with an area under the receiver operating characteristic curve value of 0.883 (95% confidence interval: 0.804-0.961), an accuracy of 0.778, a sensitivity of 0.811, and a specificity of 0.743. Conclusion The machine learning models constructed based on unenhanced CT radiomics can be used to preliminarily assess split renal function, which provides an innovative, convenient, and safe method for clinical diagnosis and has positive significance for treatment.

ObjectiveUltra performance liquid chromatography-quadrupole-time of flight tandem mass spectrometry （UPLC-Q-TOF-MS/MS） coupled with network pharmacology and molecular docking was utilized to explore the efficacy and mechanism of action of Ermiao Situ decoction on rats with damp-heat eczema. MethodsA rat model of damp-heat eczema was established by artificial climate chamber intervention combined with sensitization induction by dinitrochlorobenzene （DNCB）， and it was randomly divided into the normal group， the model group， the medium- and high-dose groups of Ermiao Situ decoction （3.40 g·kg^-1 and 6.80 g·kg^-1）， and the prednisone acetate group （2.51 mg·kg^-1）， with eight rats in each group， totalling 46 rats， of which six rats were tested with the drug-containing serum. The chemical analysis of drug-containing serum from rats was carried out by UPLC-Q-TOF-MS/MS， combined with network pharmacology for the prediction of key components， core targets， and signaling pathways， and molecular docking experiments were performed by CB-Dock2 online website. The pharmacological effects of Ermiao Situ decoction in the treatment of damp-heat eczema were investigated by epitaxial indexes combined with the pathologic tissue staining method. The serum levels of gastrin （GAS）， interleukin-4 （IL-4）， and interleukin-13 （IL-13） were measured by enzyme-linked immunosorbent assay （ELISA）. Interleukin-6 （IL-6）， Janus kinase 1 （JAK1）， phosphorylated （p）-JAK1， signal transduction and activation of transcription factor 3 （STAT3）， and p-STAT3 protein expression level was determined by Western bolt. ResultsA total of 19 active ingredients were detected in drug-containing serum samples of rats， which were predicted to act on 198 targets for the treatment of damp-heat eczema， among which the key ingredients included rhodopsin， huangpai alkaloids， and quercetin， and the main core targets included STAT3， tumor necrosis factor （TNF）， and IL-6， which were mainly involved in the cancer signaling pathway， phosphatidylinositol 3-kinase （PI3K）/protein kinase （Akt） signaling pathway， T helper 17 （Th17） cell differentiation signaling pathway， and JAK/STAT signaling pathway. The molecular docking results suggested that the key components had strong binding activities with the core targets IL-6， JAK1， and STAT3 in the JAK/STAT signaling pathway. The results of animal experiments showed that compared with those in the normal group， rats in the model group were depressed. They had loose hair， loose stools， epidermal oozing， vesiculation， and generation of thick scabs in the form of scales， decreased body weight， increased anus temperature and water intake， and increased indexes of the spleen， thymus gland， and stomach （P<0.05， P<0.01）， and the lesion tissue could be seen to be hyperkeratotic， with the aggregation of inflammatory cells and nonsignificant separation of epidermis and dermis. The gastric mucosa was thinned， deficient， and structurally disorganized， and obvious inflammatory cell aggregation was seen. The levels of GAS， IL-4， and IL-13 in serum were significantly reduced （P<0.05， P<0.01）， and the protein expression levels of IL-6， JAK1， p-JAK1， and p-STAT3 in the lesion tissue were significantly increased （P<0.05， P<0.01）. Compared with those in the model group， rats in each administration group had stable mental states， formed feces， a clean perianal area， and basically normal epidermis. Only a small amount of scaly scabs existed， and the rats had body weight increased， with decreased anal temperature and water intake， as well as decreased spleen， thymus， and gastric indexes （P<0.05， P<0.01）. Epidermal thickness was decreased， and epidermal and dermal separation boundaries were obvious， but hyperkeratotic and accumulation of inflammatory cells could still be seen. The thickness of gastric mucosa increased， and the structure was restored to varying degrees. The levels of GAS， IL-4， and IL-13 content in the serum of rats were increased to varying degrees， and the protein expression levels of IL-6， JAK1， p-JAK1， and p-STAT3 in the dermal lesion tissue were significantly decreased （P<0.05， P<0.01）. ConclusionErmiao Situ decoction may exert therapeutic effects on rats with damp-heat eczema by modulating the JAK/STAT signaling pathway.

ObjectiveTo investigate the cardioprotective effects of ginsenoside Rg₂ in regulating the phosphatidylinositol 3-kinase/protein kinase B/mammalian target of rapamycin （PI3K/Akt/mTOR） signaling pathway following acute myocardial infarction （AMI） in rats. Methods（1） Cellular experiment： Cardiomyocytes were isolated from 24-hour-old Sprague-Dawley （SD） neonatal rats and subjected to primary culture. An in vitro model of cardiomyocytes under an ischemic-hypoxic microenvironment was established. Cardiomyocytes were pretreated with ginsenoside Rg₂ （1， 2， 3 mg·L^-1） for 4 hours， then placed in RPMI 1640 serum-free medium and cultured for 24 hours in a three-gas incubator （94% N₂， 5% CO₂， 1% O₂）. The survival rate of cardiomyocytes was assessed using the methyl thiazolyl terazolium （MTT） assay. The levels of lactate dehydrogenase （LDH） leakage， superoxide dismutase （SOD）， glutathione peroxidase （GSH-Px） activity， and malondialdehyde （MDA） content in the cell culture supernatant were measured using spectrophotometry. （2） Animal experiment： Specific-pathogen-free （SPF） SD rats were used to establish an AMI model using the Olivette method combined with previous studies. Rats that survived 24 hours post-surgery were randomly divided into a model group and ginsenoside Rg₂ high-， medium-， and low-dose groups. The normal and model groups received normal saline， while the ginsenoside Rg₂ groups were administered intragastrically at doses of 8， 4， and 2 mg·kg^-1， once daily for 3 days. The levels of SOD， MDA， and GSH-Px in myocardial tissues were detected. Cardiomyocyte apoptosis was assessed using the TdT-mediated dUTP biotin nick end labeling （TUNEL） assay. The mRNA and protein expression levels of PI3K， Akt， mTOR， p62， nuclear factor-κB p65 （NF-κB p65）， and microtubule-associated protein 1 light chain 3 （LC3） Ⅱ/Ⅰ in myocardial tissues were analyzed using real-time quantitative polymerase chain reaction （Real-time PCR） and Western blot. Pathological changes in the infarct border zone were observed under a light microscope. Results（1） Cellular experiment： Compared with the normal group， the model group exhibited a significantly decreased cardiomyocyte survival rate， as well as reduced SOD and GSH-Px activity， whereas LDH activity and MDA content were significantly increased （P<0.05）. Compared with the model group， ginsenoside Rg₂ intervention significantly increased cardiomyocyte survival， SOD activity， and GSH-Px activity， while reducing LDH activity and MDA content （P<0.05） in a dose-dependent manner. Pathological examination revealed that ginsenoside Rg₂ alleviated infarct size， myocardial degeneration， and necrosis， while significantly reducing cardiomyocyte apoptosis. （2） Animal experiment： Compared with the normal group， the model group exhibited significantly lower SOD and GSH-Px activity （P<0.05） and higher MDA content （P<0.05） in myocardial tissues. Compared with the model group， all ginsenoside Rg₂ groups showed significantly increased SOD and GSH-Px activity （P<0.05） and reduced MDA content （P<0.05）. Compared with the normal group， the model group exhibited significantly decreased mRNA and protein expression levels of PI3K， Akt， mTOR， p62，and LC3 Ⅱ/Ⅰ，whereas the expression levels of NF-κB p65 were significantly increased （P<0.05）. Compared with the model group， the ginsenoside Rg₂ groups showed significantly increased PI3K， Akt， mTOR， and p62 expression， while NF-κB p65 expression levels were significantly decreased （P<0.05） in a dose-dependent manner，the mRNA and protein expression levels of LC3 Ⅱ/Ⅰ in ginsenoside Rg₂ high-dose groups were significantly increased（P<0.05）. ConclusionGinsenoside Rg₂ exerts cardioprotective effects following AMI in rats， potentially through the regulation of PI3K/Akt/mTOR-related protein expression.

OBJECTIVE To investigate the antidepressant mechanism of Shugan hewei tang （SGHWT） based on the metabolomics of prefrontal cortex （PFC）-nucleus accumbens （NAc）-ventral tegmental area （VTA） neural circuit. METHODS Male SD rats were randomly divided into blank group， model group， SGHWT low-， medium- and high-dose groups [3.67， 7.34， 14.68 g/（kg·d）， by raw material]， and fluoxetine group [1.58 mg/（kg·d）， positive control]， with 12 rats in each group. Except for the blank group， the depression model was established by chronic unpredictable mild stress combined with individual cage housing in the remaining groups， and the corresponding drug solution or normal saline was administered via gavage during modeling， once a day， for 6 consecutive weeks. After the last administration， the body weight， sucrose preference rate， total moving distance， frequency into the center and immobility time of rats in each group were detected. Samples of PFC， NAc and VTA areas of rats in the blank group， model group， SGHWT medium-dose group and fluoxetine positive control groups were collected，and their histomorphological features were observed， and non-targeted metabolomics analysis （except for fluoxetine group）were performed and validated. RESULTS Compared with model group， the cytolysis， structural damage and other pathological damages in three brain regions of rats were significantly alleviated in each drug group， while their body weight， sucrose preference rate， total moving distance and frequency into the center were all significantly higher or longer （P＜0.05）， and immobility time was significantly shorter （P＜0.05）. The results of non-targeted metabolomics showed that a total of 78 endogenous differential metabolites were identified， with 40， 35 and 24 in the PFC， NAc and VTA regions respectively， mainly involved in amino acid， lipid and sphingolipid metabolism. The results of metabolic pathway enrichment analysis showed that SGHWT affected the neural circuits of depressed rats by regulating sphingolipid metabolism， alanine， aspartic acid and glutamic acid metabolism， saturated fatty acid biosynthesis， among which alanine， aspartic acid and glutamic acid metabolism was predominantly involved. Validation experiments showed that SGHWT significantly increased the phosphorylation levels of protein kinase B （Akt） and mammalian target of rapamycin （mTOR）， and decreased the protein expression of N-methyl-D-aspartic acid receptor 1 （NMDAR1） in the NAc region of rats. CONCLUSIONS SGHWT significantly improves the depression-like behavior and attenuates pathological damage of PFC-NAc-VTA neural circuit of model rats， the mechanism of which is associated with inhibiting NMDAR1 expression and activating the Akt/mTOR signaling pathway.

ObjectiveTo analyze the distribution, drug resistance characteristics, and changing trends of Acinetobacter baumannii (AB) isolated from environmental surfaces and healthcare workers’ hands in a grade Ⅱ level A general hospital in Xuhui District of Shanghai from 2018 to 2023, and to provide reference for infection control in the hospital. MethodsEnvironmental samples were collected quarterly from critical surfaces and healthcare workers’ hands in the intensive care unit (ICU), geriatrics, and respiratory departments from 2018 to 2023. Clinical isolates were obtained from all patients with AB infections in ICU, geriatrics, respiratory department, rehabilitation department, infectious diseases department, emergency department, cardiology department, and orthopedics of the hospital from 2018 to 2023. Retrospective analyses were performed on AB detection rates, strain origins, resistance rates to commonly used antimicrobial agents, and resistance gene features, comparing the antimicrobial resistance between clinically isolated strains and environmentally isolated strains. ResultsFrom 2018 to 2023, a total of 1 416 samples were collected from the hospital and a total of 272 strains of AB were detected, with a positive detection rate of 19.21%. The detection rate gradually decreased year-on-year (χ²_trend=45.290, P<0.001). The majority of samples originated from patient-contacted items (34.56%, 94/272), followed by shared items (26.84%, 73/272) and healthcare worker-contacted items (15.07%, 41/272). From 2018 to 2023, the resistance rate of AB on environmental surfaces and healthcare workers’ hands to commonly tested antibiotics in the hospital ranged from 10% to 40%. The resistance rates to cefotaxime (42.52%) and piperacillin (38.58%) were relative high, while the resistance to polymyxin E (1.57%), polymyxin B (2.36%), and doxycycline (3.94%) maintained low. The annual fluctuations in resistance to cefotaxime, piperacillin, ceftriaxone, tobramycin, doxycycline, minocycline and cotrimoxazole were statistically significant (all P<0.05). There were statistically significant differences in the resistance of clinical and environmental isolates to ampicillin/sulbactam, cefepime, ceftazidime, subamphetamine, meropenem, piperacillin, aztreonam, gentamicin, tobramycin, minocycline, ciprofloxacin, levofloxacin, and cotrimoxazole in the hospital from 2018 to 2023 (all P<0.05). The resistance rate of clinical isolates was generally high, especially to β-lactam and quinolone drugs, which were mostly above 80% [such as cefepime (93.86%), cefotaxime (97.37%), imipenem (98.25%), and ciprofloxacin (99.12%)]. The resistance rate of environmental isolated strains to similar antibiotics was relatively lower, mostly concentrated at 10%‒30%. The whole-genome sequencing of 34 carbapenem-resistant Acinetobacter baumannii (CRAB) strains isolated from the hospital environment in 2023 revealed that the main resistance mechanism was overexpression of efflux pumps (51.97%), followed by changes in target sites (32.46%). Among the 34 CRAB strains, carbapenem resistance genes OXA-23 and OXA-51 were detected in 6 strains (17.65%), while genes such as KPC, IMP, VIM, and SIM were not detected. ConclusionFrom 2018 to 2023, AB in the hospital environment exhibited high resistance rates to certain antimicrobial agents and carried multiple resistance genes, indicating a potential transmission risk. It is necessary to further strengthen bacterial resistance monitoring and hospital infection control, and use antibiotics reasonably.

ObjectiveTo observe the clinical effect of Qingxin Zishen decoction on hot flashes after endocrine therapy for prostate cancer and explore its therapeutic mechanism. MethodA total of 60 patients who met the criteria and were admitted to Jiangsu Province Hospital of Chinese Medicine from December 2021 to December 2022 were collected and randomly divided into a treatment group and a control group， with 30 cases in each group. The treatment group was treated with Qingxin Zishen decoction， while the control group was only given routine nursing. The observation period of this study was eight weeks. The improvement of hot flash frequency， hot flash degree， hot flash score， ISS score， and TCM syndrome score were observed in the two groups before and after treatment. The changes of serum endothelin-1 （ET-1）， nitric oxide （NO）， calcitonin gene-related peptide （CGRP）， prostate specific antigen （PSA）， and testosterone were detected. ResultIn terms of efficacy， after treatment， the frequency， degree， and score of hot flashes， ISS score， and TCM syndrome score decreased in the treatment group （P<0.05）. Compared with the control group， all indicators were better in the treatment group （P<0.05）. In terms of laboratory indicators， after treatment， the serum NO level in the treatment group was increased. ET-1 level was decreased. The ratio of ET-1/NO was decreased， and the CGRP level was decreased （P<0.05）. However， testosterone and PSA levels were not significantly changed . Compared with the control group， after treatment， the serum NO level in the treatment group was higher， and the level of ET-1 was lower. The ratio of ET-1/NO and the CGRP level were lower （P<0.05）. There were no significant differences in testosterone and PSA levels between the two groups. ConclusionQingxin Zishen decoction can significantly improve hot flashes in patients with prostate cancer after endocrine therapy. The mechanism of Qingxin Zishen decoction may be to improve the vasomotor function by regulating the expression level of vasomotor factors， so as to treat hot flashes.

With the optimization of surgical technologies and postoperative management regimens, the number of lung transplantation has been significantly increased, which has become an important treatment for patients with end-stage lung disease. However, due to the impact of comprehensive factors, such as bronchial ischemia and immunosuppression, the incidence of airway stenosis after lung transplantation is relatively high, which severely affects postoperative survival and quality of life of lung transplant recipients. In recent years, with the improvement of perioperative management, organ preservation and surgical technologies, the incidence of airway stenosis after lung transplantation has been declined, but it remains at a high level. Early diagnosis and timely intervention play a significant role in enhancing clinical prognosis of patients with airway stenosis. In this article, the general conditions, diagnosis, treatment and prevention of airway stenosis after lung transplantation were reviewed, aiming to provide reference for comprehensive management of airway stenosis after lung transplantation and improving clinical prognosis of lung transplant recipients.

Objective To investigate the safety and feasibility of modified gasless trans-subclavian approach endoscopic total thyroidectomy for papillary thyroid carcinoma(PTC).Methods We retrospectively analyzed the clinical data of consecutive 82 patients with PTC who underwent the modified gasless trans-subclavian approach endoscopic total thyroidectomy in the Department of Head and Neck Surgery,Sir Run Run Shaw Hospital,Affiliated with the Zhejiang University School of Medicine,from March 2022 to June 2023.Results All operations were successfully completed under endoscopy approach without transfer to open surgery.The maximum diameter of PTC was(6.6±5.4)mm.The operation duration was(156.5±32.7)min,and the number of lymph nodes in the central compartment was(12.3±6.4).The postoperative hospital stay was(3.3±1.2)d.Postoperative complications included two cases of transient hypoparathyroidism and six cases of transient recurrent laryngeal nerve injury.All the patients recovered in one month.One case of postoperative bleeding was observed.No permanent laryngeal nerve injury,permanent hypoparathyroidism or incision infection occurred.Conclusion The gasless trans-subclavian approach endoscopic total thyroidectomy is a feasible and safety approach in selected PTC patients.The lymph nodes in the central compartment are thoroughly dissected.This approach has obvious advantages in functional protection of the anterior cervical region,and has clinical application value.

Objective:To develop and evaluate a rapid and sensitive point-of-care chemiluminescent assay(POC-CLIA)for β-human chorionic gonadotropin(β-HCG).Methods:POC-CLIA was constructed based on alkaline phosphatase(Alp)-AMPPD lumi-nescence system and magnetic particles(Mps)carrier.Performance of POC-CLIA,including sensitivity,precision,accuracy,linear dilution,specificity,stability,hook effect and clinical application were evaluated.Results:Detection limit of β-HCG was 0.71 mU/ml,linear detection range was 0.710～1.092×104 mU/ml,and was no hook effect up to 1.7×105 mU/ml.Intra and inter batch coefficients of variation were less than 10％,and could be stored stably at 37℃ for 10 days.Accuracy deviation was within±10％,so results were reliable.There was no cross-reactivity between interfering substances and anti-β-HCG antibdies.For detecting β-HCG in 100 clinical serum samples,results were highly correlated with those that were tested by clinical standard methods(R2=0.997 0).Turnaround time for single sample was less than 15 min and throughput could reach 200 T/h.Conclusion:This method is adequate that can be widely used in grassroots communities to help large-scale screening of pregnancy and related diseases.