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Jian-Yong Ding



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    MA 16 - Mediastinal, Tracheal and Esophageal Tumor: Multimodality Approaches (ID 675)

    • Event: WCLC 2017
    • Type: Mini Oral
    • Track: Thymic Malignancies/Esophageal Cancer/Other Thoracic Malignancies
    • Presentations: 1
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      MA 16.06 - Minimally Invasive Thoracoscopic Thymectomy for Early-Stage Thymomas: Modified Subxiphoid Approach Versus Unilateral Approach (ID 10081)

      16:20 - 16:25  |  Presenting Author(s): Jian-Yong Ding

      • Abstract
      • Presentation
      • Slides

      Background:
      Conventionally, minimally invasive thymectomy for early-stage thymoma was performed via unilateral thoracoscopic approach. However it is sometimes criticized for bad exposure of anterior mediastinum which may be disadvantagous for the surgery. Recently, we attempted a modified subxiphoid thoracoscopic approach with novel sternal-elevating technique to reach better surgical exposure and less trauma.

      Method:
      From January 2015 to December 2016, a total of 83 consecutive patients with early-stage thymomas without myasthenia gravis were enrolled. Between them, 36 patients were performed thoracoscopic thymectomy via subxiphoid approach (Group S) . Three subxiphoid incisions (12mm*1, 5mm*2) with the aid of artificial CO~2~ pneumothorax (8cmH~2~O) were used. Additionally, we used the sternum-elevating device (Rul-tractor, USA) through the 3rd intercostal incision (5mm*1) beside the sternum. And the other 47 cases underwent conventional thymectomy via unilateral 3-port thoracoscopic approach (Group UL). The perioperative outcome of two groups were compared.

      Result:
      The two groups were comparable on patients[,] demographics. Conversion to open surgery occurred in 1 case (due to bleeding) in Group UL. Compared with Group UL, the patients in Group S had much shorter surgical duration [(63.5±10.7)min vs (87.7±13.1)min, p=0.000], much less pain scores (2.3±1.0 vs 3.1±1.30, p=0.002) and earlier pleural drainage removal [(1.6±0.6)d vs (2.3±0.9)d, p=0.000]. The complications were similar (5.6% vs 6.4%, p=0.758). No significant difference was found on the other outcomes between the two groups, including blood loss and postoperative hospital stay.

      Conclusion:
      This study suggests that the modified subxiphoid thoracoscopic approach seems to be more effective for thymectomy for early-stage thymomas. This novel approach could improve surgical exposure, accelerate the operative progress and result in less trauma and pain. It could be a promising refinement for future thymic surgery.

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    P1.02 - Biology/Pathology (ID 614)

    • Event: WCLC 2017
    • Type: Poster Session with Presenters Present
    • Track: Biology/Pathology
    • Presentations: 1
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      P1.02-062 - Ring Finger Protein 38 Promote Non-Small Cell Lung Cancer Progression by Endowing Cell EMT Phenotype (ID 8774)

      09:30 - 09:30  |  Presenting Author(s): Jian-Yong Ding

      • Abstract
      • Slides

      Background:
      RNF38, as an E3 ubiquitin ligase, plays an essential role in multiple biological processes by controlling cell apoptosis, cell cycle and DNA repair, .this study set out to investigate the and clinical implications of Ring finger protein 38 (RNF38) in non-small cell lung cancer (NSCLC).

      Method:
      We examined RNF38 expression pattern in in multiple cancers by Oncomine expression analysis,Immunohistochemistry, quantitative real-time polymerase chain reaction (qRT-PCR) and western blot were used to detect the levels of RNF38 protein and mRNA in NSCLC and corresponding paratumorous tissues.After RNF38 was knocked down using small hairpin RNAs (shRNA) in NSCLC cell lines (A549 and 95D), Wound-healing assays and trans-well assays were used to assess cell migration and invasion ability. Colony formation assays and CCK8 were used to detect proliferative abilities. The analysis of epithelial-to-mesenchymal transition (EMT) phenotype was carried out by immunofluorescence staining and western blot.

      Result:
      Our data revealed that elevated expression of RNF38 were more common in NSCLC tissue than paired normal tissues in both mRNA (2.82 ± 0.29 vs. 1.23 ± 0.13) and protein (2.75 ± 0.09 vs. 1.24 ± 0.02) level. Higher levels of RNF38 expression were significantly associated with lymph node metastases, higher TNM stages (p=0.011), larger tumor size (p=2.09E-04) and predicted poor prognosis. We also observed that RNF38 expression was inversely correlated with E-cadherin expression (P= 0.025). Moreover, downregulation of RNF38 in NSCLC cells, the proliferation, metastatic and invasive abilities were significantly impaired. In addition, aberrant RNF38 expression could modulate the key molecules of EMT.

      Conclusion:
      Our results indicate that elevated expression of RNF38 is significantly associated with the proliferation and metastatic capacity of NSCLC cells, and RNF38 overexpression can serve as a biomarker of NSCLC poor prognosis.

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    P1.17 - Thymic Malignancies/Esophageal Cancer/Other Thoracic Malignancies (ID 703)

    • Event: WCLC 2017
    • Type: Poster Session with Presenters Present
    • Track: Thymic Malignancies/Esophageal Cancer/Other Thoracic Malignancies
    • Presentations: 1
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      P1.17-018 - Distribution of Ectopic Thymus in Chinese Patients: A Preliminary Study (ID 8630)

      09:30 - 09:30  |  Presenting Author(s): Jian-Yong Ding

      • Abstract
      • Slides

      Background:
      Thymectomy has been a mainstay in the treatment of myasthenia gravis. However, the situation of ectopic thymic tissues remains unknown .The aim of this study was to investigate the distribution of ectopic thymic tissue in Chinese patients using flow cytometry (FCM).

      Method:
      The resected tissues from 54 patients with MG was divided and classified into: right pericardiacophrenic angle (Number 1), left pericardiacophrenic angle (2), peritracheal (3), right phrenic nerve (4), left phrenic nerve (5), superficial cervical (6) and deep cervical (7). Cells were then stained with anti-CD4, anti-CD8, anti-CD3, anti-TCRvβ, anti-CD56, anti-CD20, anti-CD14,anti-CD11b and labelled with live/dead for analyzing by BD LSRFortessa.

      Result:
      Ectopic thymic tissue incidence in individual locations was as follows: 47.8% (22 in 46)right pericardiacophrenic angle, 39.5% (15 in 38) left pericardiacophrenic angle, 57.6% (19 out of 33) peritracheal, 83.3% (5 in 6) right phrenic nerve, 57.1% (4 out of 7) left phrenic nerve, 100% (4 specimens) superficial adipose and 100% (8 specimens) deep neck adipose (Fig 2). Figure 1Figure 2





      Conclusion:
      Our study indicated that the incidence of ectopic thymic tissues was more frequently than former acknowledge by HE staining test.

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