Objective To evaluate the effects of radioimmunoimaging with 99Tcm-EGFR-McAb or 99Tcm-CD44-McAb or combined application of both on nude mice bearing lung adenocarcinoma. Methods Animal model of nude mice bearing lung adenocarcinoma was established. The direct labeling method of 99Tcm was applied to labeling monoclonal antibodies for EGFR and CD44, and then the properties of the labeling antibodies purified by SephadexG50 Column were identified. The radio-immuno-image as well as body distribution concerning nude mice bearing lung adenocarcinoma was studied by application of 99Tcm-EGFR-McAb or 99Tcm-CD44-McAb alone or combined application of both. Results The labeling rates of 99Tcm for EGFR-McAb and CD44-McAb were (91.5?3.8)% and (92.3?4.1)% respectively. Specific activities of the labeled antibodies were (2.8?0.3)MBq/g and (2.9?0.5)MBq/g, respectively. The rates of radiochemical purity were (96.5?2.8)% and (96.2?3.1)%, respectively. The tumor tissue had high intake of the two labeled antibodies according to radioimmunoimaging result. The radioactivity concentration of the combined application of the two labeled antibodies was obviously higher than that of the single application. The T/NT relative values measured through ROI technique were 5.58?0.46, 2.72?0.22, and 2.30?0.18, respectively. The body distribution result of the labeled antibodies and their imaging results were basically identical. Conclusion The optimal target and non-target ratios could be obtained by application of 99Tcm-EGFR-McAb or 99Tcm-CD44-McAb alone in nude mice bearing lung adenocarcinoma. The target and non-target ratios could be enhanced through the combined application of the two antibodies.

Objective: To establish a RP-HPLC method for the determination of icariin in Bushenning Capsules. Methods: The sample was prepared by water extraction-purfication through polyamide column. The determination was carried out on C 18 ODS column with mobile phase of acetonirile-water (23∶77), and detection wavelength at 270nm according to the external standard method.Results: The icariin sample size showed a good linear relationship at the range of 0.12-1.91ug and correlation coefficient was 0.9999. The average recovery of the added sample was 99.21%(n=5) and RSD was 1.79%. The RSD in a duplicate test was 2.18%.Conclusion: The method is simple, accurate, reproducibe and can be used for content determination of icariin of icariin of Bushenning Capsules.

Objective To investigate the effect of Arsenic Trioxide(As_2O_3) combined with radiation on the apoptosis of nasopharyngeal carcinoma cells in vitro.Methods Using MTT and FCM to detect the cytotoxic and apoptosis at different As_2O_3 concentrations combined with 2Gy radiation on nasopharyngeal carcinoma cells(CNE1).Results Inhibition of cell proliferation seemed more dependent on the increase of As_2O_3 concentration.Cell survival rate was lower in the combination of As_2O_3 and radiation group than As_2O_3 alone.Conclusion As_2O_3 can enhance radiation effect obviously in nasopharyngeal carcinoma cells,especially at lower radiation dose.

OBJECTIVE: To investigate the expression of Bax and PHF20 in laryngeal squamous cell carcinoma (LSCC)and to discuss their relevance and the roles in carcinogenesis and development in LSCC. METHOD: The expressions of Bax and PHF20 in the LSCC tissues and normal mucosa tissues adjacent to carcinoma were detected by SP immunohistochemistry assay. The relationship between the expressions of Bax and PHF20 and the clinicopathological characteristics including clinical stage, pathological type, histological grade and lymph node metastasis in LSCC were analyzed according to the clinical data. RESULT: (1) The expressions of Bax and PHF20 were both significantly lower in the LSCC tissue than that in the normal laryngeal tissue (P < 0.01). (2) In clinical stage grouping, there were no statistical differences of the quantity and positive rate of Bax and PHF20 expressions among supraglottic, glottic and subglottic LSCC (P > 0.05). In histological differentiation grouping, the quantity and positive rate of Bax and PHF20 expressions decreased significantly in poorly differentiated LSCC compared with the well and moderately differentiated LSCCs (P < 0.01, P < 0.05, respectively). In T stage grouping, the quantity and positive rate of Bax and PHF20 expressions were both significantly higher in T1 + T2 compared with T3 +T4 (both P < 0.01). In addition, the quantity and positive rate of Bax and PHF20 expressions were both significantly higher in LSCC with lymph node metastasis compared to that without lymph node metastasis (both P < 0.01). CONCLUSION The lack of Bax and PHF20 might contribute to the carcinogenesis and development in LSCC. The positive expression of Bax and PHF20 maybe relative to T term degree, differentiation degree and lymphamatic metastasis of LSCC.
Antigens, Neoplasm ; metabolism ; Biomarkers, Tumor ; metabolism ; Carcinoma, Squamous Cell ; metabolism ; Head and Neck Neoplasms ; metabolism ; Humans ; Immunohistochemistry ; Laryngeal Neoplasms ; metabolism ; Lymphatic Metastasis ; Prognosis ; Squamous Cell Carcinoma of Head and Neck ; bcl-2-Associated X Protein ; metabolism

Objective: To evaluate the hybrid of drug eluting stent (DES) with bare metal stent (BMS) and exclusive DES implantation for treating the patients with multi-lesion coronary disease.
Methods: A total of 6495 patients with multi-lesion coronary disease received elective PCI in our hospital from 2004-04 to 2006-10 were retrospectively studied. The patients were divided into 2 groups, Hybrid group, n=848 and Exclusive DES group, n=5647. With 1:1 propensity score matching, there were 823 pair of patients were ifnally studied. The clinical outcomes included 1, 2 years post-operative all cause death, myocardial infarction (MI), target lesion revascularization (TLR), target vessel revascularization (TVR), major adverse cardiac events (MACE) and in-stent thrombosis. The relative risks of all outcomes were assessed by Cox’s proportional-hazard model after propensity match.
Results: With propensity match, Cox’s proportional-hazard model analysis indicated that compared with Exclusive DES group, Hybrid group had the higher risks of TLR (HR 2.38, 95%CI 1.50-3.70), TVR (HR 1.61, 95%CI 1.15-2.27), MACE (HR 1.37, 95%CI 1.02-1.85), all P<0.01. The all cause death, MI and the ratio of all cause death/MI were similar between 2 groups in 1, 2 years follow-up period, all P>0.05.
Conclusion:Compared with exclusive DES, the hybrid of DES with BMS implantation had the higher risk of TLR, TVR and MACE for treating the patients with multi-lesion coronary disease.

Objective:To explore the best treatment for local ablation of colon cancer liver metastases (CRLM) by meta-analysis.Methods:The electronic databases of PubMed, Web of Science, Embase, CNKI and the Cochrane Library were searched from the establishment to August 22, 2022, and studies that report outcomes with comparison between microwave ablation (WMA) and radiofrequency ablation (RFA) in CRLM treatment were selected by inclusion and exclusion criteria. Furthermore, the perioperative and survival data were statistically summarized and analyzed by Review Manager 5.3 software.Results:A total of 5 retrospective studies were included with a total sample size of 648 cases, including 316 cases (48.8%) in the WMA group and 332 cases (51.2%) in the RFA group. The results of meta-analysis showed that locoregional recurrence rate in WMA group was significantly lower than that in RFA group. The 1-year and 2-year disease-free survival (DFS) of the WMA group was significantly better than that of the RFA group with HR of 1.77 ( P=0.04, 95% CI: 1.04-3.02) and 1.60 ( P=0.02, 95% CI: 1.09-2.35), respectively. Conclusion:The local control rate and 1-year and 2-year DFS of WMA were superior to RFA.

Objectives:To investigate the clinical impacts of chronic total occlusion (CTO) in acute non-ST segment elevation myocardial infarction (NSTEMI) patients underwent primary percutaneous coronary intervention (PCI).Methods:A total of 2 271 acute NSTEMI patients underwent primary PCI from China Acute Myocardial Infarction Registry were enrolled in this study and divided into the CTO group and the non-CTO group according to the angiography. The primary endpoint was in-hospital mortality and mortality during a 2-year follow-up. The secondary endpoint was major adverse cardiovascular events (MACE) including revascularization, death, re-myocardial infarction, heart failure readmission, stroke and major bleeding.Results:Thirteen-point four percent of the total acute NSTEMI patients had concurrent CTO. In-hospital mortality (3.6% vs. 1.4%, P<0.01) and 2-year mortality (9.0% vs. 5.1%, P<0.01) were significantly higher in the CTO group than those in the non-CTO group, respectively. Multiple regression analyses showed that chronic obstructive pulmonary disease ( HR 7.28, 95% CI 1.50-35.35, P=0.01) was an independent risk factor of in-hospital mortality, and advanced age ( HR 1.04, 95% CI 1.01-1.07, P<0.01), and low levels of ejection fraction ( HR 0.95, 95% CI 0.93-0.98, P<0.01) were independent risk factors of 2-year mortality. CTO ( HR1.67, 95% CI 1.10-2.54, P=0.02) was an independent risk factor of revascularization, but not a risk factor of mortality. Conclusions:Although acute NSTEMI patients concurrent with CTO had higher mortality, CTO was only an independent risk factor of revascularization, but not of mortality. Advanced age and low levels of ejection fraction were independent risk factors of long-term death among acute NSTEMI patients.

Objective:To investigate the establishment and application value of a radio-mics prediction model for lymph node metastasis of gallbladder carcinoma based on dual-phase enhanced computed tomography (CT).Methods:The retrospective cohort study was conducted. The clinicopathological data of 194 patients with gallbladder carcinoma who were admitted to the First Affiliated Hospital of Xi'an Jiaotong University from January 2012 to December 2020 were collected. There were 70 males and 124 females, aged (64±10)years. All patients underwent curative-intent resection of gallbladder carcinoma. A total of 194 patients were randomly divided into 156 cases in training set and 38 cases in test set according to the ratio of 8:2 based on random number method in R software. The training set was used to establish a diagnostic model, and the test set was used to validate the diagnostic model. After the patients undergoing CT examination, image analysis was performed, radiomics features were extracted, and a radiomics model was established. Based on clinicopathological data, a nomogram prediction model was established. Observation indicators: (1) lymph node dissection and histopathological examination results; (2) establishment and characteristic analysis of a radiomics prediction model; (3) analysis of influencing factors for lymph node metastasis of gallbladder carcinoma; (4) establishment of a nomogram prediction model for lymph node metastasis; (5) comparison of the predictive ability between the radiomics prediction model and nomogram prediction model for lymph node metastasis. Measurement data with normal distribution were represented as Mean± SD, and measurement data with skewed distribution were represented as M(range). Count data were expressed as absolute numbers, and comparison between groups was performed by the chi-square test. Univariate analysis was conducted by the chi-square test, and multivariate analysis was performed by the Logistic regression model forward method. The receiver operating characteristic curve was drawn, and the area under curve, decision curve, confusion matrix were used to evaluate the predictive ability of prediction models. Results:(1) Lymph node dissection and histopathological examination results. Of the 194 patients, 182 cases underwent lymph node dissection, with the number of lymph node dissected as 8(range, 1?34) per person and the number of positive lymph node as 0(range, 0?11) per person. Postoperative histopathological examination results of 194 patients: 122 patients were in stage N0, with the number of lymph node dissected as 7(range, 0?27) per person, 48 patients were in stage N1, with the number of lymph node dissected as 8(range, 2?34) per person and the number of positive lymph node as 1(range, 1?3) per person, 24 patients were in stage N2, with the number of lymph node dissected as 11(range, 2?20) per person and the number of positive lymph node as 5(range, 4?11) per person. (2) Establishment and characteristic analysis of a radiomics prediction model. There were 107 radiomics features extracted from 194 patients, including 18 first-order features, 14 shape features and 75 texture features. According to the intra-group correlation coefficient and absolute median difference of each radiomics feature, mutual information, Select K-Best, least absolute shrinkage and selection operator regression were conducted to further reduce dimensionality. By further combining 5 different machine learning algorithms including random forest, gradient boosting secession tree, support vector machine (SVM), K-Nearest Neighbors and Logistic regression, the result showed that the Select K-Best_SVM model had the best predictive performance after analysis, with the area under receiver operating characteristic curve as 0.76 in the test set. (3) Analysis of influencing factors for lymph node metastasis of gallbladder carcinoma. Results of univariate analysis showed that systemic inflammation response index, carcinoembryonic antigen (CEA), CA19-9, CA125, radiological T staging and radiological lymph node status were related factors for lymph node metastasis of patients with gallbladder cancer ( χ2=4.20, 11.39, 5.68, 11.79, 10.83, 18.58, P<0.05). Results of multivariate analysis showed that carcinoembryonic antigen, CA125, radiological T staging (stage T3 versus stage T1?2, stage T4 versus stage T1?2), radiological lymph node status were independent influencing factors for lymph node metastasis of patients with gallbladder carcinoma [ hazard ratio=2.79, 4.41, 5.62, 5.84, 3.99, 95% confidence interval ( CI) as 1.20?6.47, 1.81?10.74, 1.50?21.01, 1.02?33.31, 1.87?8.55, P<0.05]. (4) Establishment of a nomogram prediction model for lymph node metastasis. A nomogram prediction model was established based on the 4 independent influencing factors for lymph node metastasis of gallbladder carcinoma, including CEA, CA125, radiological T staging and radiological lymph node status. The concordance index of the nomogram model was 0.77 (95% CI as 0.75?0.79) in the training set and 0.73 (95% CI as 0.68?0.72) in the test set, respectively. (5) Comparison of the predictive ability between the radiomics predic-tion model and nomogram prediction model for lymph node metastasis. The receiver operating characteristic curve showed that the areas under the curve of Select K-Best_SVM radiomics model were 0.75 (95% CI as 0.74?0.76) in the training set and 0.76 (95% CI as 0.75?0.78) in the test set, respectively. The areas under the curve of nomogram prediction model were 0.77 (95% CI as 0.76?0.78) in the training set and 0.70 (95% CI as 0.68?0.72) in the test set, respectively. The decision curve analysis showed that Select K-Best_SVM radiomics model and nomogram prediction model had a similar ability to predict lymph node metastasis. The confusion matrix showed that Select K-Best_SVM radiomics model had the sensitivity as 64.29% and 75.00%, the specificity as 73.00% and 59.09% in the training set and test set, respectively. The nomogram had the sensitivity as 51.79% and 50.00%, the specificity as 80.00% and 72.27% in the training set and test set, respectively. Conclusion:A dual-phase enhanced CT imaging radiomics prediction model for lymph node metastasis of gallbladder carcinoma is successfully established, and its predictive ability is good and consistent with that of nomogram.

OBJECTIVE: The prepare decellularized extracellular matrix (ECM) scaffold materials derived from human cervical carcinoma tissues for 3D culture of cervical carcinoma cells. METHODS: Fresh human cervical carcinoma tissues were treated with sodium lauryl ether sulfate (SLES) solution to prepare decellularized ECM scaffolds. The scaffolds were examined for ECM microstructure and residual contents of key ECM components (collagen, glycosaminoglycan, and elastin) and genetic materials by pathological staining and biochemical content analysis. In vitro 3D culture models were established by injecting cultured cervical cancer cells into the prepared ECM scaffolds. The cells in the recellularized scaffolds were compared with those in a conventional 2D culture system for cell behaviors including migration, proliferation and epithelial-mesenchymal transition (EMT) wsing HE staining, immunohistochemical staining and molecular biological technology analysis. Resistance to 5-fluorouracil (5-Fu) of the cells in the two culture systems was tested by analyzing the cell apoptosis rates via flow cytometry. RESULTS: SLES treatment effectively removed cells and genetic materials from human cervical carcinoma tissues but well preserved the microenvironment structure and biological activity of ECM. Compared with the 2D culture system, the 3D culture models significantly promoted proliferation, migration, EMT and 5-Fu resistance of human cervical cancer cells. CONCLUSION The decellularized ECM scaffolds prepared using human cervical carcinoma tissues provide the basis for construction of in vitro 3D culture models for human cervical cancer cells.
Female ; Humans ; Decellularized Extracellular Matrix ; Extracellular Matrix ; Uterine Cervical Neoplasms ; Tissue Scaffolds/chemistry* ; Carcinoma ; Fluorouracil/pharmacology* ; Tissue Engineering ; Tumor Microenvironment