Application of Three-dimensional Reconstruction in Single Utility-port Thoracoscopic Segmentectomy for Early Stage Non-small Cell Lung Cancer: A Propensity Score-matched Analysis / 肿瘤防治研究

Objective To evaluate the clinical value of 3D reconstruction in the single utility-port thoracoscopic segmentectomy of early stage NSCLC by propensity score matching (PSM). Methods We retrospectively analyzed clinical data of 150 early stage NSCLC patients undergoing single utility-port thoracoscopic segmentectomy. The patients were divided into reconstruction group (n=58) and non-reconstruction group (n=92) according to 3D reconstruction. PSM was performed on two groups to compare perioperative outcomes. Results Procedures were successfully completed on all patients, without perioperative death. In each group, 43 patients were successfully matched after PSM on the basis of 8 confounding factors, age, gender, smoking status, BMI, maximum tumor diameter on CT, tumor location, % FEV1 and type of planned segmentectomy. After PSM, in complex segmentectomy, the patients in the reconstruction group had shorter operation time (155.77±30.17 vs. 212.94±66.49min, P < 0.001) and less blood loss (46.00±25.94 vs. 88.79±68.36ml, P=0.002), compared with the non- reconstruction group. Conclusion Preoperative 3D reconstruction could help improve the efficiency of single utility-port thoracoscopic surgery for complex segmentectomy and reduce intraoperative bleeding.

Expression and significance of Per2 mRNA, HDAC1 mRNA and E-cadherin mRNA in esophageal cancer cells / 中华消化外科杂志

Objective:To investigate the expression of Per2 mRNA, HDAC1 mRNA and E-cadherin mRNA in esophageal cancer cells and their significance.Methods:The experimental study was conducted. Human normal esophageal epithelial cells as the control group and human esophageal cancer cell line KYSE-150 cells as the experimental group were cultured in vitro to logarithmic growth stage. Observation indicators: (1) the proliferation of cells; (2) the migration and invasion of cells; (3) the expression of Per2 mRNA, HDAC1 mRNA, and E-cadherin mRNA in cells of initial physiological state; (4) the expression of Per2 mRNA, HDAC1 mRNA, and E-cadherin mRNA after cells were treated with Per2-agonists or inhibitors; (5) the expression of Per2 mRNA and E-cadherin mRNA after cells were treated with HDAC1 inhibitors. Measurement data with normal distribution were represented as Mean± SD, the t test was used for comparison within groups and the t test or ANCOVA were used for comparison between groups. Results:(1) The proliferation of cells: the cell proliferation of the experimental group and control group were 0.90%±0.14% and 0.52%±0.08%, with a significant difference between the two groups ( t=5.166, P<0.05). (2) The migration and invasion of cells: the numbers of cell migration and invasion for the experimental group were 173±41 and 86±27, versus 50±15 and 21±9 for the control group, with significant differences between the two groups ( t=6.274, 5.153, P<0.05). (3) The expression of Per2 mRNA, HDAC1 mRNA, and E-cadherin mRNA in cells of initial physiological state: the expression of Per2 mRNA, HDAC1 mRNA, and E-cadherin mRNA in cells of initial physiological state for the experimental group was 11.7±2.7, 20.4±6.6, and 12.4±2.5, respectively, versus 2.4±0.5, 8.5±2.2, and 27.3±4.5 for the control group, with significant differences between the two groups ( t=5.782, 2.982, -5.034, P<0.05). (4) The expression of Per2 mRNA, HDAC1 mRNA, and E-cadherin mRNA after cells were treated with Per2-agonists or inhibitors: after cells were treated with Per2-agonists, the expression of Per2 mRNA, HDAC1 mRNA, and E-cadherin mRNA were 13.1±2.2, 22.4±6.2, 16.6±4.2 for the experimental group, and 9.9±3.1, 18.4±5.6, 15.3±2.3 for the control group, respectively. There was no significant difference in the expression of Per2 mRNA, HDAC1 mRNA, or E-cadherin mRNA of the experimental group between cells being treated with and without Per2-agonists ( t=-4.300, 10.087, -4.187, P>0.05). There were significant differences in the expression of Per2 mRNA, HDAC1 mRNA, and E-cadherin mRNA of the control group between cells being treated with and without Per2-agonists ( t=-4.846, 3.501, 9.294, P<0.05). There was no significant difference in the expression of Per2 mRNA or E-cadherin mRNA between the experimental group and control group after cells were treated with Per2-agonists ( F=1.000, 7.582, P>0.05), while there was a significant difference in the expression of HDAC1 mRNA between the two groups ( F=1.724, P<0.05). After cells were treated with Per2-inhibitors, the expression of Per2 mRNA, HDAC1 mRNA, and E-cadherin mRNA were 4.1±1.7, 7.5±2.2, 22.8±4.2 for the experimental group, and 3.1±0.9, 9.3±3.2, 28.4±5.8 for the control group, respectively. There were significant differences in the expression of Per2 mRNA, HDAC1 mRNA, and E-cadherin mRNA of the experimental group between cells being treated with and without Per2-inhibitors ( t=12.124, 5.105, -10.245, P<0.05). There was no significant difference in the expression of Per2 mRNA, HDAC1 mRNA, or E-cadherin mRNA of the control group between cells being treated with and without Per2-inhibitors ( t=-2.815, 1.568, -1.439, P>0.05). There were significant differences in the expression of Per2 mRNA and E-cadherin mRNA after cells were treated with Per2-inhibitors between the experimental group and control group ( F=22.965, 82.134, P<0.05), while there was no significant difference in the expressions of HDAC1 mRNA between the two groups ( F=6.416, P>0.05). (5) The expression of Per2 mRNA and E-cadherin mRNA after cells were treated with HDAC1 inhibitors: after cells were treated with HDAC1 inhibitors, the expression of Per2 mRNA and E-cadherin mRNA were 13.4±3.5, 24.2±3.4 for the experimental group, and 3.1±1.2, 26.8±5.2 for the control group, respectively. There was no significant difference in the expression of Per2 mRNA of the experimental group between cells being treated with and without HDAC1-inhibitors ( t=-3.959, P>0.05). There was a significant difference in the expression of E-cadherin mRNA of the experimental group between cells being treated with and without HDAC1-inhibitors ( t=-21.977, P<0.05). There was no significant difference in the expression of Per2 mRNA or E-cadherin mRNA of the control group between cells being treated with and without HDAC1-inhibitors ( t=-1.440, 1.058, P>0.05). After cells were treated with HDAC1-inhibitors, there was no significant difference in the expressions of Per2 mRNA between the experimental group and control group ( F=2.004, P>0.05), while there was a significant difference in the expression of E-cadherin mRNA between the two groups ( F=325.800, P<0.05). Conclusions:Human esophageal cancer cells have an elevated expression of Per2 mRNA and HDAC1 mRNA, and a reduced expression of E-cadherin mRNA. The overexpression of Per2 mRNA may activate the expression of downstream targeting protein HDAC1, and inhibit the expression of cell surface E-cadherin mRNA.

Comparative study of transrectal ultrasonography and magnetic resonance in preoperative estimation of circumferential resection margin of mid-low rectal cancer / 中华超声影像学杂志

Objective To compare the value of transrectal ultrasonography(TRUS) and magnetic resonance(MR) in preoperative estimation of circumferential resection margin (CRM) of mid-low rectal cancer.Methods Both TRUS and MR were performed prior to surgery in 111 patients with mid-low rectal cancer.The CRM was evaluated and compared with the postoperative pathologic findings.Results The accuracy of TRUS and MR for CRM was 91.9％(102/111) and 85.6％(95/111),respectively,there was no statistical difference between them (P =0.137).Their specificities were 94.0％ (79/84)and 84.5％ (71/84),there was statistical difference between them(P =0.046).The consistency of the results between TRUS and pathology was better than that between MR and pathology(Kappa1 =0.783,Kappas =0.652).Conclusions TRUS is proved to have an important diagnostic value for CRM of mid-low rectal cancer.

Study on relationship between varicocele and prostatic venous plexus by color Doppler flow imaging / 重庆医学

Objective To evaluate the relationship between varicocele (VC) and the prostativenouplexuby coloDoppleflow imaging(CDFI) and to explore the etiology of varicocele .MethodThe innediameterand the hemorrheologiparameterof spermativein and prostativenouplexuwere observed in 135 patientwith lefvaricocele(lefVgroup) ,51 patientwith bilat-eral V(bilateral Vgroup) and the control group(100 cases) by CDFI .The diameteof the prostativenouplexus(PVD) ,peak velocity of reflux flow (RFV) in the Valsalvtesand the peak velocity of antegrade flow (AFV) aresin 3 groupwere statistical-ly analyzed .ResultPVD and RFV in the bilateral Vgroup were greatethan those in the lefVgroup and the control group (P＜0 .01) .PVD and RFV in the lefVgroup had no statistical differencecompared with the control group (P＞0 .05) .AFV had no statistical difference among 3 group(P>0 .05) .PVD ,RFV and AFV in 30 caseof Vhad no statistical differencebe-tween before and afteoperation (P>0 .05) .Conclusion Bilateral Vmay be accompanied with potential systematic vascular abnormalities.

Study on the ultrasonic images and ultrasound anatomy for the larynx / 中华超声影像学杂志

Objective To explore ultrasonic image for the normal anatomy of the larynx,and provide the basis of ultrasonic diagnosis in laryngeal diseases.Methods Ultrasound anatomy for the larynx was established by way of comparing the structures of four corpses and ultrasonic imaging of the larynx of normal control group.Results Ultrasonic image for the normal anatomy of the larynx was established by comparing the anatomy tomography of corpses and ultrasonic imaging of the larynx of normal control group.Conclusions Ultrasonography could be applied in the examination of the laryngeal diseases as it could show unambiguous ultrasonic imagings of the larynx,and adding an important complementary technique to clinical medicine.