Identifying the compound formulae-related xenobiotics in bio-samples is full of challenges.Conventional strategies always exhibit the insufficiencies in overall coverage,analytical efficiency,and degree of automation,and the results highly rely on the personal knowledge and experience.The goal of this work was to establish a software-aided approach,by integrating ultra-high performance liquid chromatography/ion-mobility quadrupole time-of-flight mass spectrometry(UHPLC/IM-QTOF-MS)and in-house high-definition MS2 library,to enhance the identification of prototypes and metabolites of the compound formulae in vivo,taking Sishen formula(SSF)as a template.Seven different MS2 acquisition methods were compared,which demonstrated the potency of a hybrid scan approach(namely high-definition data-independent/data-dependent acquisition(HDDIDDA))in the identification precision,MS1 coverage,and MS2 spectra quality.The HDDIDDA data for 55 reference compounds,four component drugs,and SSF,together with the rat bio-samples(e.g.,plasma,urine,feces,liver,and kidney),were acquired.Based on the UNIFI? platform(Waters),the efficient data processing workflows were estab-lished by combining mass defect filtering(MDF)-induced classification,diagnostic product ions(DPIs),and neutral loss filtering(NLF)-dominated structural confirmation.The high-definition MS2 spectral li-braries,dubbed in vitro-SSF and in vivo-SSF,were elaborated,enabling the efficient and automatic identification of SSF-associated xenobiotics in diverse rat bio-samples.Consequently,118 prototypes and 206 metabolites of SSF were identified,with the identification rate reaching 80.51％and 79.61％,respectively.The metabolic pathways mainly involved the oxidation,reduction,hydrolysis,sulfation,methylation,demethylation,acetylation,glucuronidation,and the combined reactions.Conclusively,the proposed strategy can drive the identification of compound formulae-related xenobiotics in vivo in an intelligent manner.

Objective To observe the effect of preoperative enteral nutritional support combined with modified Ivor-Lewis surgery for esophageal cancer on lung function and mRNA expression of GATA-binding protein 3(GATA3)and forkhead protein P3(Foxp3)in peripheral blood.Methods Sixty esophageal cancer patients who underwent modified Ivor-Lewis surgery in our hospital from January 2022 to October 2023 were selected and divided into two groups by simple random method.The control group was given conventional diet before operation,and the observation group was given enteral nutrition support before operation.The two groups were compared in terms of nutritional support.Results Both groups showed significantly decreases in one-second exertion expiratory volume/exertion lung volume(FEV1/FVC)(P<0.05),FVC(P<0.05),FEV1(P<0.05)and the levels of peripheral blood GATA3(P<0.05),Foxp3 mRNA(P<0.05)expression compared with those at admission(P<0.05),but no significant differences in pulmonary function(P>0.05),peripheral blood GATA3(P>0.05),and Foxp3 mRNA(P>0.05)expression between them at 1 week postoperatively.Both groups exhibited significantly lower levels of albumin,prealbumin,haemoglobin,transferrin,PNI and body mass and body mass index at admis-sion as compared to those at one week after surgery(P<0.05).The observation group showed significantly higher levels of albumin,prealbumin,haemoglobin,transferrin,and PNI at 1 week postoperatively(P<0.05),but no significant differences in ventilation time,defecation time,drain retention time,hospitalisation time,and compli-cation rate as compared to the control group(P>0.05).Conclusion Preoperative enteral nutritional support combined with modified Ivor-Lewis surgery for esophageal cancer improves postoperative nutritional status,and ren-ders less effect on postoperative lung function and peripheral blood GATA3 and Foxp3 mRNA expression.

Objective:To explore the relationship between ultrasound characteristics and invasiveness in the follicular variant of papillary thyroid carcinoma (FVPTC), and to integrate multiple ultrasound parameters for visual assessment of predictive outcomes by using Nomogram.Methods:A total of 312 FVPTC patients who were pathologically confirmed through surgery in Zhejiang Cancer Hospital and Zhejiang Provincial People′s Hospital from January 2013 to December 2023 were retrospectively collected.Based on defined criteria, FVPTC patients were categorized into high-invasion and low-invasion groups. The dataset was divided into a training set and a validation set in a ratio of 7 to 3. Clinical information and ultrasound feature parameters were collected. Univariate and multivariate Logistic regression analyses were performed on the training set. A predictive model for FVPTC invasiveness was constructed based on ultrasound features. The model′s discriminative ability and calibration were evaluated in the validation set, and a nomogram was generated.Results:The training set included a total of 218 patients with FVPTC, among which 131 were classified as high invasive.The validation set consisted of 94 patients, with 53 cases of high invasive FVPTC patients. Multivariate logistic regression analysis on the training set revealed that tumor multifocality ( OR=6.505, P=0.016), hypoechoic ( OR=3.235, P=0.103), shape ( OR=0.521, P=0.049), and microcalcifications ( OR=2.479, P=0.004) were independent influencing factors for predicting invasiveness in FVPTC. In the training set, the area under the curve (AUC) of the ultrasound predictive model was 0.704 (95% CI=0.634-0.771), and in the validation set, the AUC was 0.650 (95% CI=0.531-0.770), indicated good discriminative ability.The calibration curve showed good alignment with the ideal curve, demonstrating favorable calibration performance. Conclusions:Ultrasound features provide valuable information for assessing the invasiveness of FVPTC, and the model constructed by combining ultrasound features demonstrates good predictive efficacy for the invasiveness of FVPTC.

Objective:To explore the differences in distribution of colorectal cancer-related risk factors between patients with early-onset colorectal cancer (EOCRC) and those with late-onset colorectal cancer (LOCRC) in a Chinese cohort, and to provide reference and guidance for the prevention, diagnosis, and treatment of EOCRC.Methods:Using data from the National Colorectal Cancer Cohort study cohort, 5377 patients with newly diagnosed colorectal cancer (CRC) attending the Department of Colorectal Surgery and Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine from June 2018 to February 2023 were included in the study cohort. Questionnaires capturing epidemiological features, including lifestyle and dietary habits, were administered. The patients were divided into two groups, the cut-off age being 50 years. Those aged ≥50 years were defined as having LOCRC and those aged <50 years as having EOCRC. Wilcoxon (continuous variates) or χ 2 tests (categorical variates) were performed to compare differences in epidemiological features. Results:A total of 3799 people who had completed the questionnaire were included in this study, 491 of whom had EOCRC and 3308 LOCRC. The response rate to the questionnaire was 70.7%. The median ages of patients in the EOCRC and LOCRC groups were 43 and 66 years, respectively. There was a higher proportion of female patients (48.5% [253/491] vs. 35.8% [1184/3308], χ 2=28.8, P<0.001) in the EOCRC than the LOCRC group. Patients with EOCRC and lower body mass index (medium 22.1 kg/m 2 vs. 22.9 kg/m 2, W=744 793, P=0.005) and lower proportion of abdominal obesity (87.2% [428/491] vs. 93.8% [3103/3308], χ 2=38.3, P<0.001). Patients with EORC significantly less commonly reported a history of hypertension (5.9% [29/491] vs. 41.6% [1375/3308], χ 2=231.8, P<0.001), diabetes (1.4% [7/491] vs. 14.4% [476/3308], χ 2=63.6, P<0.001) and cardiovascular and cerebrovascular diseases (0.8% [4/491] vs. 7.3% [241/3308], χ 2=28.6, P<0.001). However, the proportion of patients with a family history of CRC was significantly higher ( P<0.05) in the EOCRC group (10.2% [50/491] vs. 6.9% [227/3 308], χ 2=6.5, P=0.010]. In terms of lifestyle, patients with EOCRC had shorter sleep duration (median: 8.0 hours vs. 8.5 hours, W=578 989, P<0.001), and were less likely to participate in physical exercise (29.5% [145/491] vs. 38.7% [1281/3308] χ 2=15.0, P<0.001) or engage in physical work (65.2% [320/491] vs. 74.1% [2450/3308], χ 2=16.7, P<0.001). Meanwhile, in the EOCRC group a lower percentage of patients were smokers (29.3% [144/491] vs. 42.7% [1411/3308], χ 2=46.9, P<0.001) and they smoked less (median 17.6 pack/year vs. 30.0 pack/year,W=55 850, P<0.001). Fewer patients in the EOCRC group habitually drank alcohol (21.0% [103/491] vs. 38.0% [1257/3308], χ 2=57.5, P<0.001) or tea (17.5% [86/491] vs. 28.7% [948/3308], χ 2=26.2, P<0.001) than in the LOCRC group. Compared with the LOCRC group, patients with EOCRC had a higher frequency of intake of fresh meat, fresh fruit, eggs, and dairy products and a lower frequency of intake of preserved meat and pickled vegetables; these differences are statistically significant (all P<0.05). There was no statistically significant difference in consumption of fresh vegetables or a high-sugar diet between the two groups (both P>0.05). Conclusions:This study highlights disparities in adverse lifestyle and dietary habits between patients in China with EOCRC versus LOCRC.

Objective:To explore the differences in distribution of colorectal cancer-related risk factors between patients with early-onset colorectal cancer (EOCRC) and those with late-onset colorectal cancer (LOCRC) in a Chinese cohort, and to provide reference and guidance for the prevention, diagnosis, and treatment of EOCRC.Methods:Using data from the National Colorectal Cancer Cohort study cohort, 5377 patients with newly diagnosed colorectal cancer (CRC) attending the Department of Colorectal Surgery and Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine from June 2018 to February 2023 were included in the study cohort. Questionnaires capturing epidemiological features, including lifestyle and dietary habits, were administered. The patients were divided into two groups, the cut-off age being 50 years. Those aged ≥50 years were defined as having LOCRC and those aged <50 years as having EOCRC. Wilcoxon (continuous variates) or χ 2 tests (categorical variates) were performed to compare differences in epidemiological features. Results:A total of 3799 people who had completed the questionnaire were included in this study, 491 of whom had EOCRC and 3308 LOCRC. The response rate to the questionnaire was 70.7%. The median ages of patients in the EOCRC and LOCRC groups were 43 and 66 years, respectively. There was a higher proportion of female patients (48.5% [253/491] vs. 35.8% [1184/3308], χ 2=28.8, P<0.001) in the EOCRC than the LOCRC group. Patients with EOCRC and lower body mass index (medium 22.1 kg/m 2 vs. 22.9 kg/m 2, W=744 793, P=0.005) and lower proportion of abdominal obesity (87.2% [428/491] vs. 93.8% [3103/3308], χ 2=38.3, P<0.001). Patients with EORC significantly less commonly reported a history of hypertension (5.9% [29/491] vs. 41.6% [1375/3308], χ 2=231.8, P<0.001), diabetes (1.4% [7/491] vs. 14.4% [476/3308], χ 2=63.6, P<0.001) and cardiovascular and cerebrovascular diseases (0.8% [4/491] vs. 7.3% [241/3308], χ 2=28.6, P<0.001). However, the proportion of patients with a family history of CRC was significantly higher ( P<0.05) in the EOCRC group (10.2% [50/491] vs. 6.9% [227/3 308], χ 2=6.5, P=0.010]. In terms of lifestyle, patients with EOCRC had shorter sleep duration (median: 8.0 hours vs. 8.5 hours, W=578 989, P<0.001), and were less likely to participate in physical exercise (29.5% [145/491] vs. 38.7% [1281/3308] χ 2=15.0, P<0.001) or engage in physical work (65.2% [320/491] vs. 74.1% [2450/3308], χ 2=16.7, P<0.001). Meanwhile, in the EOCRC group a lower percentage of patients were smokers (29.3% [144/491] vs. 42.7% [1411/3308], χ 2=46.9, P<0.001) and they smoked less (median 17.6 pack/year vs. 30.0 pack/year,W=55 850, P<0.001). Fewer patients in the EOCRC group habitually drank alcohol (21.0% [103/491] vs. 38.0% [1257/3308], χ 2=57.5, P<0.001) or tea (17.5% [86/491] vs. 28.7% [948/3308], χ 2=26.2, P<0.001) than in the LOCRC group. Compared with the LOCRC group, patients with EOCRC had a higher frequency of intake of fresh meat, fresh fruit, eggs, and dairy products and a lower frequency of intake of preserved meat and pickled vegetables; these differences are statistically significant (all P<0.05). There was no statistically significant difference in consumption of fresh vegetables or a high-sugar diet between the two groups (both P>0.05). Conclusions:This study highlights disparities in adverse lifestyle and dietary habits between patients in China with EOCRC versus LOCRC.

Objective To establish Cdh5-Cre ERT /Acta2-tdTomato-STOP floxed -eGFP knockin genetic tracing mice, and to investigate its application in studies on vascular endothelial cell transition in liver fibrosis. Methods Cdh5-Cre ERT mice were mated with Acta2-KI mice, and the Cdh5-Cre ERT /Acta2-KI genetic tracing mice were obtained and identified by PCR genotyping. Primary liver sinusoid endothelial cells (LSECs) were isolated and cultured, and a model of CCl 4 -induced liver fibrosis was established. LSECs and liver tissue were collected for immunofluorescent staining to observe the expression of the fluorescent proteins tdTomato and eGFP. Results After being induced by tamoxifen, LSECs and liver tissue of Cdh5-Cre ERT /Acta2-KI genetic tracing mice expressed eGFP under the conditions for epithelial-mesenchymal transdifferentiation established in vivo and in vitro, while the control group without induction expressed tdTomato alone. Conclusion The successfully established Cdh5-Cre ERT /Acta2-KI genetic tracing mice can realize the effective labeling of epithelial-mesenchymal transdifferentiation, which provides a genetic tracing basis for the diverse sources of mesenchymal myofibroblasts in liver fibrosis.

Objective: To investigate the effect of repairing the skin and soft tissue defects of foot with the anterior tibial artery perforator flap. Methods: Nine patients received the operation using the anterior tibial artery periosteal perforator flap to repair distal foot lesion with skin and soft tissue defects.There were six males and three females.All cases were the distal foot defects of skin and soft tissue with tendon and bone exposure, including traffic accident injury in 5 cases, crush injury in 3 cases, other causes of injury in 1 case. The defects ranged from 5 cm×3 cm to 9 cm×6 cm. The flaps ranged from 7 cm×5 cm—11 cm×8 cm. The donor sites were repaired with direct suture or full-thickness skin grafts. Results: All the flaps were survived, without vascular crisis, congestion and blisters. 1 case had partial necrosis of flap margin, which was cured after dressing. All cases were followed up for 6 months to 34 months(mean 18 months). The appearance and function recovery of flaps were satisfactory. Conclusions It is an ideal flap donor site for repairing soft tissue defects of the distal foot with the anterior tibial artery perforator flap, which has the advantages of simple operation, less trauma, high skin flap survival rate and good appearance.

The remote monitoring of patients at intensive care units(ICU), known as tele-ICU technology, is as yet a new concept in China. The authors introduced the efforts made by the Second Affiliated Hospital in working with a hospital in Xinjiang to provide the tele-ICU model. In this model, telemedicine medical workers cooperate with bedside healthcare providers of the hospital in Xinjiang in co-care of the patients. Such a practice can elevate the critical care medicine of the latter hospital, worthy of further promotion.

OBJECTIVE:To study the protective effects and the mechanism of Rabdosia serra water extract(RWE)on hepatic fibrosis(HF)induced by carbon tetrachloride(CCl4)in rats. METHODS:Sixty male SD rats were randomly divided into normal group,model group,colchicine group(0.12 mg/kg),and RWE low-dose,medium-dose and high-dose groups(4,8,16 g/kg,by crude drug),with 10 rats in each group. Except for intraperitoneal injection of olive oil for normal group,other groups were given 40% CCl4olive oil solution intraperitoneally to induce HF model. Since the first day of modeling,each treatment group was given relevant medicine (10 mL/kg) intragastrically, while normal group and model group were given constant volume of water intragastrically,once a day,for consecutive 6 weeks. After medication,biochemical process or ELISA were used to determine the contents of ALT,AST,HA,LN,PCⅢ and Ⅳ-C in serum,the activities or contents of SOD,GSH-Px,MDA,TNF-α,IL-6 and IL-1β in liver tissue. Pathological changes of liver tissue in rats were observed by HE staining. The expression of α-SMA and TGF-β1 in liver tissue were detected by Western blot. RESULTS:Compared with normal group,the contents of ALT,AST,LN,HA,PCⅢ and Ⅳ-C in serum,the contents of MDA,TNF-α,IL-6 and IL-1β in liver tissue were all increased significantly in model group (P＜0.01);the activities of SOD and GSH-Px in liver tissue were decreased significantly(P＜0.01). Liver fibrosis was obvious, and the relative expression of α-SMA and TGF-β 1were increased significantly (P＜0.01). Compared with model group,the contents of ALT,AST,HA,LN,PCⅢ and Ⅳ-C in serum as well as the contents of MDA,TNF-α and IL-6 in liver tissue in colchicines group and RWE groups,the contents of IL-1 β in liver tissue of rats in colchicines group,RWE medium-dose and high-dose groups were all decreased significantly (P＜0.05 or P＜0.01). The activities of SOD and GSH-Px in liver tissue of rats were increased significantly in colchicines group and RWE groups(P＜0.05 or P＜0.01). The fibrosis degree of liver tissue was significantly reduced, while the relative expression of α-SMA and TGF-β 1decreased significantly (P＜0.01). CONCLUSIONS:RWE can protect CCl4-induced HF model rats,the mechanism of which may be associated with regulating lipid metabolism,relieving liver lipid peroxidation injury and anti-oxidative stress response,inhibiting the release of inflammatory factors and the expression of TGF-β1.

The paper presented the concept of telemedicine assistants, and analyzed their professional attributes, training modality and job description. Such scenarios as emergency telemedicine consultation, electronic ICU building, and international remote pathology consultation were taken as an example, to further elaborate the role of such assistants, for the purpose of providing patients with telemedicine services of higher quality, efficiency and convenience.