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Mehta S, Ramey S, Kwon D, Rich B, Wolfson A, Yechieli R, Portelance L, Mellon E. Effect of Radiation Therapy Duration on Overall Survival in Anal Squamous Cell Carcinoma: A National Analysis. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Pollack A, Giret T, Chinea F, Kwon D, Udayakumar T, Cote R, Stortz J, Lam L, Davicioni E, Buerki C, Abramowitz M, Stoyanova R. Association of Circulating Tumor Cells (CTCs) and Genomic Signatures in Prostate Cancer Patients. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.06.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abramowitz M, Kwon D, Freeman D, Dogan N, Eade T, Punnen S, Pra AD, Kneebone A, Stoyanova R, Pollack A. Early Toxicity and Patient Reported Outcomes from a Radiation Hypofractionation Randomized Trial of Extended vs Accelerated Therapy for Prostate Cancer (HEAT). Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Quintana J, Perlow H, Cassidy V, Farnia B, Kwon D, Zhao W, Ciraula S, Griggs J, Awerbuch A, Samuels S, Yechieli R. Discrepancies in Chemotherapy and Radiation Start Times for Non-Small Cell Lung Cancer Patients. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Pollack A, Chinea F, Bossart E, Kwon D, Abramowitz M, Lynne C, Jorda M, Marples B, Patel V, Wu X, Reis I, Studenski M, Casillas V, Stoyanova R. Dosimetry and Toxicity of a Phase I Clinical Trial of Men Treated for Prostate Cancer with Lattice Extreme Ablative Dose (LEAD) Radiation Therapy. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Cassidy V, Perlow H, Awerbuch A, Kwon D, Quintana J, Griggs J, Ciraula S, Alford S, Yechieli R, Samuels S. Determination of Physician Effectiveness in Adjusting Palliative Radiation Fractionation for Patients near the End of Life. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Perlow H, Ramey S, Engel S, Kwon D, Nicolli E, Yechieli R, Samuels S. Examining the Incidence of HPV Positive Oropharynx Cancer in an Ethnically Diverse Population. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Perlow H, Ramey S, Cassidy V, Kwon D, Nicolli E, Yechieli R, Samuels S. Disparities in Follow-Up Care after Definitive Treatment for Head and Neck Cancer in an Ethnically Diverse Population. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ramey S, Padgett K, Lamichhane N, Neboori H, Kwon D, Mellon E, Brown K, Duffy M, Victoria J, Dogan N, Portelance L. Dosimetric Analysis of Stereotactic Body Radiation Therapy for Pancreatic Cancer using MR-Guided Tri-60Co Unit, MR-Guided LINAC, and Conventional LINAC Based Plans. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Saravia D, Agte S, Okabe N, Park W, Kwon D, Mudad R, Suzuki H, Chae Y, Oh M, Rahbari A, Lopes G. P2.01-82 Neutrophil-to-Lymphocyte Ratio Complements the Prognostic Ability of PD-L1 in Non-Small Cell Lung Cancer Treated with PD-1/PD-L1 Inhibitors. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kim H, Kwon D, Yoon SH, Kim H, Park CM, Goo JM, Jeon YK, Ahn SY. Bronchovascular injury associated with clinically significant hemoptysis after CT-guided core biopsy of the lung: Radiologic and histopathologic analysis. PLoS One 2018; 13:e0204064. [PMID: 30240441 PMCID: PMC6150475 DOI: 10.1371/journal.pone.0204064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 08/31/2018] [Indexed: 12/13/2022] Open
Abstract
Objective To evaluate bronchovascular injuries as the causative occurrence for clinically significant hemoptysis after percutaneous transthoracic needle biopsy (PTNB). Materials and methods We included 111 consecutive patients who experienced hemoptysis after cone beam CT (CBCT)-guided PTNB from January 2014 through January 2017. Clinically significant hemoptysis was defined as hemoptysis causing hemodynamic instability or oxygen desaturation greater than 10% of baseline. The lesion characteristics were evaluated on CT images. The penetration of bronchovascular structures along the trajectory of the introducer needle and potential penetration at the firing of the biopsy gun were assessed on CBCT images. The cutting injury of bronchovascular structures was histopathologically assessed in biopsy specimens. The associated factors for clinically significant hemoptysis were assessed using logistic regression analyses. Results Seventeen patients (15.3%; 95%CI, 9.7%-23.2%) had clinically significant hemoptysis. On univariate analysis, the open bronchus sign (P = .004), nodule consistency (P = .012), potential penetration of a pulmonary vessel or bronchus 1 mm or larger at firing (P = .008 and P = .038, respectively), and a cutting injury of a pulmonary vessel 1 mm or larger (P = .007) or a bronchial structure (P = .041) were associated with clinically significant hemoptysis. Multivariate analysis found the following significant associated factors: potential penetration of a pulmonary vessel 1 mm or larger at firing (OR, 3.874; 95%CI, 1.072–13.997; P = .039) and cutting injury of a pulmonary vessel 1 mm or larger (OR, 6.920; 95%CI, 1.728–27.711; P = .006) or a bronchial structure (OR 4.604; 95%CI, 1.194–17.755; P = .027). Conclusion Potential penetration and cutting injury of bronchovascular structures 1mm or larger at firing were independently associated with clinically significant hemoptysis after PTNB.
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Ahn H, Kim S, Jang JY, Kwon D, Koh J, Kim YA, Chung DH, Jeon YK. Abstract 3625: MET signaling upregulates PD-L1 expression in human lung and gastric cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-3625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Tyrosine kinase receptor, MET, plays an important role for the progression of tumor through diverse mechanisms. Cancer immunotherapy targeting PD-1/PD-L1 pathway shows clinical benefit in patient with PD-L1 expressing solid tumor. In our previous study on non-small cell lung cancer (NSCLC) using immunohistochemistry, MET overexpression was significantly associated with programmed cell death-ligand 1 (PD-L1) overexpression. Thus, we investigated if MET signaling pathway is involved in PD-L1 expression in tumor cells.
Method and Result: Lung adenocarcinoma cell lines including H596 (harboring MET exon 14 skipping mutation), H1993 (harboring MET gene amplification), H23 and H522 (MET wild-type), and a gastric carcinoma cell line, Hs746T (harboring MET exon 14 skipping mutation and gene amplification) were used. Hs746T cells were treated with MET inhibitor or transfected with MET siRNA and subject to microarray analysis. MET inhibition or knockdown led to changes in expression level of variable immune-related molecules, of which PD-L1 was one of the most down-regulated molecules. Stimulation of H596, H23 and H522 cells with HGF, a MET ligand, increased PD-L1 expression at the mRNA and protein level. Treatment of H1993 and Hs746T cells with MET inhibitor or MET knockdown using siRNA resulted in down-regulation of PD-L1 at the mRNA, total protein, and surface expression levels. PI3K/Akt and MAPK/Erk signaling pathways were involved in MET-mediated PD-L1 up-regulation in H1993 and Hs746T cells. Finally, the Cancer Genome Atlas (TCGA) analysis showed that MET and PD-L1 expression are significantly positively correlates with each other in patients with lung cancer (in NSCLC, rho=0.219 [p<0.001]; in adenocarcinoma, r=0.401 [p<0.001]; in squamous cell carcinoma, r=0.144 [p=0.001]) and in patients with gastric cancer (r=0.137 [p=0.005]).
Conclusion: This study demonstrates that MET signaling increases PD-L1 transcription and protein overexpression in lung and gastric cancer cells, which might contribute to immune escape of tumor via PD-1/PD-L1 pathway. MET-targeted therapy may be considered as combination therapy with PD-1/PD-L1 blockades.
Citation Format: Hyunkyung Ahn, Sehui Kim, Ji Young Jang, Dohee Kwon, Jaemoon Koh, Young A Kim, Doo Hyung Chung, Yoon Kyung Jeon. MET signaling upregulates PD-L1 expression in human lung and gastric cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 3625.
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Kwon D, Koh J, Kim S, Go H, Min HS, Kim YA, Kim DK, Jeon YK, Chung DH. Overexpression of endoplasmic reticulum stress-related proteins, XBP1s and GRP78, predicts poor prognosis in pulmonary adenocarcinoma. Lung Cancer 2018; 122:131-137. [PMID: 30032821 DOI: 10.1016/j.lungcan.2018.06.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 05/30/2018] [Accepted: 06/08/2018] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Endoplasmic reticulum (ER) stress is associated with tumor development and progression via pro-tumorigenic and anti-tumorigenic effects. However, the clinicopathological implications of the ER stress pathway in non-small cell lung cancer remain unclear. Therefore, we sought to address these issues in this study. MATERIALS AND METHODS Expression of two ER stress-related proteins, GRP78 and XBP1 spliced-form (XBP1s), was evaluated in pulmonary adenocarcinoma (pADC; n = 369) and squamous cell carcinoma (pSqCC; n = 246) using immunohistochemistry. RESULTS Expression levels of GRP78 and XBP1s were significantly higher in pADCs and pSqCCs, respectively (both, P < 0.0001). In the pADC group, XBP1s expression was higher in patients with ALK translocation than in those with wild-type ALK, wild-type EGFR, or EGFR mutation (P < 0.005). No significant difference in GRP78 expression according to ALK or EGFR status was noted. pADC harboring high GRP78 expression exhibited an increased XBP1s expression (P = 0.0067). Higher XBP1s expression was associated with shorter disease-free survival (DFS) in patients with pADC (P = 0.026) and in those with ALK translocation (P = 0.001). Higher GRP78 expression was associated with shorter DFS in patients with pADC (P = 0.029) and those with EGFR mutation (P = 0.005). Multivariate survival analysis revealed that high XBP1s expression was an independent predictor of poor DFS in pADC (P = 0.004, hazard ratio [HR] = 3.115), and that high GRP78 expression was an independent predictor of poor DFS in EGFR-mutated pADC (P = 0.007, HR = 2.168). Taken together, high expression of XBP1s or GRP78 was an independent poor prognostic factor in pADC (P = 0.002, HR = 2.403). CONCLUSION GRP78 and XBP1s are expressed variably in pADC, but their overexpression is associated with poor patient prognosis. The ER stress pathway may be a prognostic biomarker and potential therapeutic target for pADC.
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Park JS, Choi YJ, Kim YT, Park S, Chae JH, Park JD, Cho YJ, Kim WS, Seong MW, Park SH, Kwon D, Chung DH, Suh DI. Pediatric Case Report on an Interstitial Lung Disease with a Novel Mutation of SFTPC Successfully Treated with Lung Transplantation. J Korean Med Sci 2018; 33:e159. [PMID: 29805340 PMCID: PMC5966374 DOI: 10.3346/jkms.2018.33.e159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 03/29/2018] [Indexed: 11/24/2022] Open
Abstract
Mutations of the surfactant protein (SP)-C gene (SFTPC) have been associated with neonatal respiratory distress syndrome (RDS) and childhood interstitial lung disease (ILD). If accurate diagnosis and proper management are delayed, irreversible respiratory failure demanding lung transplantation may ensue. A girl was born at term but was intubated and given exogenous surfactant due to RDS. Cough and tachypnea persisted, and symptoms rapidly progressed at 16 months of age despite treatment with antibiotics, oral prednisolone, methylprednisolone pulse therapy, and intravenous immunoglobulin. At 20 months, she visited our hospital for a second opinion. A computed tomography scan showed a diffuse mosaic pattern with ground-glass opacity and subpleural cysts compatible with ILD. A video-assisted thoracoscopic lung biopsy revealed ILD with eosinophilic proteinaceous material and macrophages in the alveolar space. Bilateral lung transplant from a 30-month-old child was done, and she was discharged in room air without acute complications. Genetic analysis revealed a novel c.203T>A, p.Val68Asp mutation of SP-C, based on the same exon as a known pathogenic mutation, p.Glu66Lys.
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Cho Y, Yoon K, Lee D, Kwon D. EP-1202: Radiosurgical decompression for benign perioptic tumors causing compressive cranial neuropathy. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31512-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Cho Y, Chon H, Yoon K, Lee D, Kwon D. PO-0720: Single-fraction versus hypofractionated stereotactic radiosurgery for medium-sized brain metastases. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31030-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Kwon D, Nadolski G, Itkin M. 4:03 PM Abstract No. 118 Protein-losing enteropathy following thoracic duct ligation: diagnosis and treatment. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Nam SJ, Kim S, Kwon D, Kim H, Kim S, Lee E, Kim TM, Heo DS, Park SH, Lim MS, Kim CW, Jeon YK. Prognostic implications of tumor-infiltrating macrophages, M2 macrophages, regulatory T-cells, and indoleamine 2,3-dioxygenase-positive cells in primary diffuse large B-cell lymphoma of the central nervous system. Oncoimmunology 2018; 7:e1442164. [PMID: 29900049 PMCID: PMC5993494 DOI: 10.1080/2162402x.2018.1442164] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 02/07/2018] [Accepted: 02/14/2018] [Indexed: 11/05/2022] Open
Abstract
Primary diffuse large B-cell lymphoma of the central nervous system (CNS-DLBCL) is an aggressive disease with a poor prognosis. The status of the tumor immune microenvironment in CNS-DLBCL remains unclear. We investigated the prognostic implications of tumor-associated macrophages (TAMs), regulatory T-cells (Tregs), and indoleamine 2,3-dioxygenase (IDO)+ cells in primary CNS-DLBCL (n = 114) by immunohistochemical analysis. The numbers of tumor-infiltrating immune cells, including CD68+ TAMs, CD163+ or CD204+ M2 macrophages, FOXP3+ Tregs, and IDO+ cells were all significantly lower in CNS-DLBCL versus systemic DLBCL (n = 165; all P < 0.001), but with little difference in the ratio of CD163+/CD68+ or CD204+/CD68+ cells. An increase in CD68+ cell numbers was significantly associated with prolonged progression-free survival (PFS) and overall survival in patients with CNS-DLBCL (P = 0.004 and 0.021, respectively). In contrast, an increase in CD204+ cell numbers or a higher ratio of CD204+/CD68+ cells was related to a shorter PFS (P = 0.020 and 0.063, respectively). An increase in IDO+ cell numbers was associated with a significantly longer PFS (P = 0.019). In combination, the status of low IDO+ cell numbers combined with low CD68+ cell numbers, high CD204+ cell numbers, or a high CD204+/CD68+ cell ratio all predicted poor PFS in multivariate analyses. This study showed that an increase in CD204+ cell numbers, suggestive of M2 macrophages, was associated with poor clinical outcome in CNS-DLBCL, whereas increased CD68+ or IDO+ cell numbers were related to a favorable prognosis. The analysis of tumor-infiltrating immune cells could help in predicting the prognosis of CNS-DLBCL patients and determining therapeutic strategies targeting tumor microenvironment.
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Damarla V, Dobrosotskaya D, Siddiqui F, Wollner I, Raoufi M, Li J, Kwon D, Khan G. Neoadjuvant phase II trial of chemo-radiotherapy (CRT) in patients with resectable (R) and borderline resectable (BR) pancreatic ductal adenocarcinoma (PDA). Eur J Cancer 2018. [DOI: 10.1016/j.ejca.2018.01.110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Goldstone A, Müller-Oehring E, Willoughby A, de Zambotti M, Franzen P, Pohl K, Pfefferbaum A, Sullivan E, Prouty D, Kwon D, Hasler B, Clark D, Colrain I, Baker F. Association between sleep slow wave activity and brain structure during adolescence. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Park W, Lopes G, Kwon D, Florou V, Chae Y, Warsch J, Ishkanian A, Jahanzeb M, Mudad R. P1.07-025 Correlating ISEND and Tumor Mutation Burden (TMB) with Clinical Outcomes of Advanced Non-Small Cell Lung Cancer (ANSCLC) Patients on Nivolumab. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Park W, Kwon D, Desai A, Florou V, Saravia D, Warsch J, Chae Y, Ishkanian A, Jahanzeb M, Mudad R, Lopes G. P1.07-024 ISEND May Predict Clinical Outcomes for Advanced NSCLC Patients on PD-1/PD-L1 Inhibitors but Not Chemotherapies or Targeted Kinase Inhibitors. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Park W, Kwon D, Saravia D, Desai A, Warsch J, Vargas F, El Dinali M, Elias R, Chae Y, Kim D, Warsch S, Ishkanian A, Ikpeazu C, Mudad R, Lopes G, Jahanzeb M. P2.07-037 Developing a Predictive Clinical Outcome Model for Advanced Non-Small Cell Lung Cancer Patients Receiving Nivolumab. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.11.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pollack A, Abramowitz M, Kwon D, Padgett K, Reis I, Tschudi Y, Chinea F, Kryvenko O, Punnen S, Stoyanova R. An Automated Multiparametric MRI Quantitative Imaging Prostate Habitat Risk Scoring System for Defining External Beam Radiation Therapy Boost Volumes. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ramey S, Asher D, Kwon D, Ahmed A, Wolfson A, Yechieli R, Portelance L. Delays in Definitive Cervical Cancer Treatment: Longer Waits With Ethnic/Racial Disparities Nationwide. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chung YR, Kwon D, Kim S, Na HY, Han N, Kim HJ, Kim MA, Park IA. WITHDRAWN:Uterine Arteriovenous Malformation Accompanied with a Uterine Stromomyoma. J Pathol Transl Med 2017:jptm.2016.09.24. [PMID: 28772353 DOI: 10.4132/jptm.2016.09.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 09/23/2016] [Indexed: 11/17/2022] Open
Abstract
Ahead of Print article withdrawn by publisher.
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Kumar A, Sato K, Verma B, Yzeiraj E, Betancor J, Imazio M, Hachamovitch R, Kwon D, Klein A. P6296Quantitative assessment of pericardial delayed hyperenhancement: have we finally found an objective criteria to diagnose and treat recurrence? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Goldstone A, Willoughby AR, de Zambotti M, Franzen PL, Pohl KM, Pfefferbaum A, Sullivan EV, Müller-Oehring EM, Prouty D, Kwon D, Hasler BP, Clark DB, Colrain IM, Baker FC. 0032 THE MEDIATING EFFECT OF BRAIN STRUCTURE ON SLEEP SLOW WAVE ACTIVITY DURING ADOLESCENCE. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kim S, Koh J, Kwon D, Keam B, Go H, Kim YA, Jeon YK, Chung DH. Comparative analysis of PD-L1 expression between primary and metastatic pulmonary adenocarcinomas. Eur J Cancer 2017; 75:141-149. [PMID: 28222308 DOI: 10.1016/j.ejca.2017.01.004] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 12/09/2016] [Accepted: 01/02/2017] [Indexed: 12/11/2022]
Abstract
Programmed death-ligand 1 (PD-L1) expression in pulmonary adenocarcinomas (pADCs) was implicated in predicting anti-PD-1/PD-L1 therapy efficacy. However, the differential expression of PD-L1 between primary and metastatic pADC remains unclear. Thus, we addressed this issue. In total, 161 paired primary and metastatic tumour tissues from 146 patients with pADC were collected. Most of the cases had regional nodal metastasis (134/161, 83.2%). PD-L1 expression was categorised based on the proportion of immunostained tumour cells using cutoff values of 1%, 5%, 10% and 50%. In primary tumours, PD-L1 positivity was observed in 28.1% (41/146), 27.4% (40/146), 22.6% (33/146) and 13.0% (19/146) of cases using cutoff values of 1%, 5%, 10% and 50%, respectively. The overall concordance rate for PD-L1 expression between primary and metastatic tumours was 75.2% (121/161). The concordance rate in primary tumours expressing PD-L1 in <1% or ≥50% of tumour cells was 87.2% (102/117) or 70% (14/20), respectively. In contrast, the concordance rate in tumours expressing PD-L1 in ≥1% to <50% of cells was only 20.8% (5/24). After dichotomising the cases using cutoff values of 1% and 50%, the concordance rate increased to 80.1% (129/161) and 90.7% (146/161) in all paired cases and to 70.4% (19/27) and 85.2% (23/27) in cases with distant metastases, respectively. This study demonstrates that the concordance of PD-L1 expression between primary and metastatic pADC is high when using cutoff values of 1% and 50%. Thus, evaluation of PD-L1 in either primary or metastatic tumours would be helpful for guiding anti-PD-1/PD-L1 immunotherapy in patients with advanced pADC.
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Kim G, Kwon D, Na HY, Kim S, Moon KC. Mucinous Cystadenoma of the Testis: A Case Report with Immunohistochemical Findings. J Pathol Transl Med 2017; 51:180-184. [PMID: 28189139 PMCID: PMC5357754 DOI: 10.4132/jptm.2016.08.30] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/18/2016] [Accepted: 08/30/2016] [Indexed: 11/17/2022] Open
Abstract
Mucinous cystadenoma of the testis is a very rare tumor. Herein, we report a case of mucinous cystadenoma arising in the testis of a 61-year-old man, along with a literature review. Computed tomography showed a 2.5-cm-sized poorly enhancing cystic mass. Grossly, the tumor was a unilocular cystic mass filled with mucinous material and confined to the testicular parenchyma. Histologically, the cyst had a fibrotic wall lined by mucinous columnar epithelium without atypia. Immunohistochemical staining was positive for cytokeratin 20 and CDX2, as well as focally positive for cytokeratin 7. The pathologic diagnosis was mucinous cystadenoma.
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Kim S, Koh J, Kim MY, Kwon D, Go H, Kim YA, Jeon YK, Chung DH. PD-L1 expression is associated with epithelial-to-mesenchymal transition in adenocarcinoma of the lung. Hum Pathol 2016; 58:7-14. [DOI: 10.1016/j.humpath.2016.07.007] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 06/26/2016] [Accepted: 07/06/2016] [Indexed: 10/21/2022]
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82
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Kwon D, Yun JY, Keam B, Kim YT, Jeon YK. Prognostic implications of FGFR1 and MYC status in esophageal squamous cell carcinoma. World J Gastroenterol 2016; 22:9803-9812. [PMID: 27956804 PMCID: PMC5124985 DOI: 10.3748/wjg.v22.i44.9803] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 09/20/2016] [Accepted: 09/28/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the clinicopathological features and prognostic implications of combined MYC and fibroblast growth factor receptor 1 (FGFR1) status in esophageal squamous cell carcinomas (ESCCs).
METHODS All patients with ESCC (n = 180) underwent surgical resection at Seoul National University Hospital sometime between 2000 and 2013. A tissue microarray was constructed using cores obtained from representative tumor areas of formalin-fixed, paraffin-embedded tissue blocks. FGFR1 and MYC copy numbers were quantified using fluorescence in situ hybridization. The level of MYC expression was determined using immunohistochemistry. FGFR1 and MYC amplification status was compared between primary and metastatic lymph nodes. Univariate and multivariate survival analyses were performed according to adjuvant therapy status.
RESULTS FGFR1 and MYC amplifications were observed in 21.4% (37/173) and 54.2% (91/168) of patients, respectively, while MYC expression was observed in 58.9% (106/180) of patients. There was a positive correlation between MYC amplification and overexpression (P = 0.002). Although FGFR1 amplification was not associated with MYC amplification or expression, 12.3% (20/163) of patients exhibited both FGFR1 amplification and MYC expression. There was also a correlation in FGFR1 amplification status between matched primary tumors and metastatic lymph nodes (P < 0.001). MYC expression was higher in ESCCs with pT1 (P < 0.001) and in those with no lymph node metastasis (P = 0.023). MYC expression was associated with prolonged disease-free survival (P = 0.036) and overall survival (OS) (P = 0.017) but was not an independent prognostic factor. FGFR1 amplification was an independent predictor for prolonged OS in all patients (P = 0.029) and in those who did not receive adjuvant therapy (P = 0.013). Combined FGFR1 amplification and MYC expression predicted better OS in patients who did not receive adjuvant therapy (P = 0.034) but not in those who did receive adjuvant therapy.
CONCLUSION FGFR1 amplification and MYC expression have prognostic implications in resected ESCCs with respect to adjuvant therapy. The role of FGFR1-targeted therapy in ESCC remains to be explored.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/genetics
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/mortality
- Carcinoma, Squamous Cell/pathology
- Carcinoma, Squamous Cell/therapy
- Chemoradiotherapy, Adjuvant
- Chemotherapy, Adjuvant
- Esophageal Neoplasms/genetics
- Esophageal Neoplasms/mortality
- Esophageal Neoplasms/pathology
- Esophageal Neoplasms/therapy
- Esophageal Squamous Cell Carcinoma
- Esophagectomy
- Female
- Gene Amplification
- Gene Dosage
- Genetic Predisposition to Disease
- Humans
- Immunohistochemistry
- In Situ Hybridization, Fluorescence
- Kaplan-Meier Estimate
- Lymphatic Metastasis
- Male
- Middle Aged
- Multivariate Analysis
- Neoadjuvant Therapy
- Phenotype
- Proportional Hazards Models
- Proto-Oncogene Proteins c-myc/genetics
- Radiotherapy, Adjuvant
- Receptor, Fibroblast Growth Factor, Type 1/genetics
- Retrospective Studies
- Risk Factors
- Time Factors
- Tissue Array Analysis
- Treatment Outcome
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83
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Kim R, Keam B, Kwon D, Ock CY, Kim M, Kim TM, Kim HJ, Jeon YK, Park IK, Kang CH, Kim DW, Kim YT, Heo DS. Programmed death ligand-1 expression and its prognostic role in esophageal squamous cell carcinoma. World J Gastroenterol 2016; 22:8389-8397. [PMID: 27729745 PMCID: PMC5055869 DOI: 10.3748/wjg.v22.i37.8389] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 07/27/2016] [Accepted: 08/23/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the expression and prognostic role of programmed death ligand-1 (PD-L1) in locally advanced esophageal squamous cell carcinoma (ESCC).
METHODS A total of 200 patients with ESCC who underwent radical esophagectomy with standard lymphadenectomy as the initial definitive treatment in Seoul National University Hospital from December 2000 to April 2013 were eligible for this analysis. Tissue microarrays were constructed by collecting tissue cores from surgical specimens, and immunostained with antibodies directed against PD-L1, p16, and c-Met. Medical records were reviewed retrospectively to assess clinical outcomes. Patients were divided into two groups by PD-L1 status, and significant differences in clinicopathologic characteristics between the two groups were assessed.
RESULTS Tumor tissues from 67 ESCC patients (33.5%) were PD-L1-positive. Positive p16 expression was observed in 21 specimens (10.5%). The H-score for c-Met expression was ≥ 50 in 42 specimens (21.0%). Although PD-L1-positivity was not significantly correlated with any clinical characteristics including age, sex, smoking/alcoholic history, stage, or differentiation, H-scores for c-Met expression were significantly associated with PD-L1-positivity (OR = 2.34, 95%CI: 1.16-4.72, P = 0.017). PD-L1 expression was not significantly associated with a change in overall survival (P = 0.656). In contrast, the locoregional relapse rate tended to increase (P = 0.134), and the distant metastasis rate was significantly increased (HR = 1.72, 95%CI: 1.01-2.79, P = 0.028) in patients with PD-L1-positive ESCC compared to those with PD-L1-negative ESCC.
CONCLUSION PD-L1 expression is positively correlated with c-Met expression in ESCC. PD-L1 may play a critical role in distant failure and progression of ESCC.
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84
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Chinea F, Patel V, Lamichhane N, Kwon D, Punnen S, Kobetz E, Abramowitz M, Pollack A. Exploring Heterogeneity Within Hispanic/Latino Men Diagnosed With Prostate Cancer to Identify at-Risk US Populations. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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85
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Kwon D, Choi C, Chae C. Chronologic Localization ofMycoplasma hyopneumoniaein Experimentally Infected Pigs. Vet Pathol 2016; 39:584-7. [PMID: 12243470 DOI: 10.1354/vp.39-5-584] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The chronologic localization of Mycoplasma hyopneumoniae was examined by in situ hybridization in experimentally infected pigs for a period of 35 days after intratracheal inoculation. M. hyopneumoniae DNA was detected in bronchial and bronchiolar epithelial cells from infected pigs at 7, 14, 21, and 28 days postinoculation (DPI) and in alveolar and interstitial macrophages and type I pneumocytes from infected pigs at 14, 21, 28, and 35 DPI. Strong hybridization signals for M. hyopneumoniae were detected mainly at the luminal surface of bronchial and bronchiolar lining epithelial cells. When a hybridization signal was detected at the luminal surface of bronchial and bronchiolar lining epithelial cells, a given bronchus or bronchiole also exhibited peribronchiolar lymphoid cuffing. These observations suggested that the presence of M. hyopneumoniae in different tissues could be due to a difference in the duration of the infection.
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86
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Kim S, Nam SJ, Kwon D, Kim H, Lee E, Kim TM, Heo DS, Park SH, Kim CW, Jeon YK. MYC and BCL2 overexpression is associated with a higher class of Memorial Sloan-Kettering Cancer Center prognostic model and poor clinical outcome in primary diffuse large B-cell lymphoma of the central nervous system. BMC Cancer 2016; 16:363. [PMID: 27286976 PMCID: PMC4903010 DOI: 10.1186/s12885-016-2397-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 06/03/2016] [Indexed: 01/21/2023] Open
Abstract
Background Primary diffuse large B-cell lymphoma of the central nervous system (PCNS-DLBCL) is a distinct clinicopathological entity with a poor prognosis. Concurrent MYC and BCL2 overexpression predicts inferior prognosis in systemic DLBCLs. However, the prognostic significance of MYC and BCL2 in PCNS-DLBCL remains elusive. Methods Immunohistochemistry (IHC) of MYC, BCL2 and BCL6 was performed on tumor samples from 114 patients with PCNS-DLBCL. IHC score was assigned based on the proportion of immunostained cells. Results MYC, BCL2, and BCL6 IHC scores were 18.16 ± 19.58, 58.86 ± 35.07, and 39.39 ± 37.66 % (mean ± SD), respectively. Twenty-one cases (18.1 %) were designated as MYC-positive with a cutoff score of 40. BCL2 positivity was found in 87 cases (75.0 %) using a cutoff score of 30. MSKCC (Memorial Sloan-Kettering Cancer Center prognostic model) class 2 and 3 had higher rates of MYC and/or BCL2 positivity (MYC, P = 0.012; BCL2, P = 0.008; dual-positive, P = 0.022). Poor KPS (Karnofsky Performance Status score <70), multifocal disease, Nottingham-Barcelona score ≥2, and MSKCC class 2 and 3 were related to shorter progression-free survival (PFS) (P = 0.001, 0.037, 0.001, and 0.008, respectively). Patients with older age (>60 years) showed poorer overall survival (OS) (P = 0.020). MYC positivity was associated with poor PFS (P = 0.027), while patients with BCL2 positivity exhibited a shorter OS (P = 0.010). Concomitant MYC and BCL2 positivity was related to poor PFS (P = 0.041), while the lack of both MYC and BCL2 expression was related to prolonged OS (P = 0.014). MYC and BCL2 expression had no independent prognostic implication by multivariate analysis in overall patients with PCNS-DLBCL. However, among patients treated with combined high-dose methotrexate, vincristine and procarbazine and radiotherapy, dual MYC and BCL2 overexpression (a cutoff score of 60) was an independent poor prognostic indicator (P = 0.010). Conclusions Evaluation of MYC and BCL2 expression may be helpful for the determination of PCNS-DLBCL prognosis. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2397-8) contains supplementary material, which is available to authorized users.
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87
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Yoon K, Cho B, Kwak J, Lee D, Kwon D, Ahn S, Lee S, Kim C, Roh S, Cho Y. SU-F-P-60: Optimization of Cyberknife Treatment Planning Using a Dose-Limiting Auto-Shells Method for Brain Metastases. Med Phys 2016. [DOI: 10.1118/1.4955768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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88
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Lopez C, Nagornaya N, Parra N, Kwon D, Ishkanian F, Markoe A, Maudsley A, Stoyanova R. SU-F-R-42: Association of Radiomic and Metabolic Tumor Volumes in Radiation Treatment of Glioblastoma Multiforme. Med Phys 2016. [DOI: 10.1118/1.4955813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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89
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Grubb WR, Neboori HJ, Diaz AD, Li H, Kwon D, Panoff J. Racial and Ethnic Disparities in the Pediatric Hodgkin Lymphoma Population. Pediatr Blood Cancer 2016; 63:428-35. [PMID: 26524117 DOI: 10.1002/pbc.25802] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 09/23/2015] [Indexed: 02/05/2023]
Abstract
BACKGROUND Little is known about the association between race/ethnicity and survival in pediatric Hodgkin lymphoma (HL) patients. In a state-wide pediatric cohort diagnosed with HL, we assessed demographic, disease, and treatment characteristics associated with overall survival (OS). We then attempted to validate these findings and assess disease-specific survival (DSS) in a national Surveillance, Epidemiology, and End Results (SEER) cohort. PROCEDURE HL patients of 0.1-21 years diagnosed from 1981 to 2010 were evaluated using the Florida Cancer Data System (FCDS). Kaplan-Meier curves estimated OS from 5 to 25 years based on race/ethnicity, treatment, decade of diagnosis, and sex. Multivariate Cox proportional hazard regressions tested independent factors associated with differences in OS. These methods were replicated in the SEER with additional assessment of DSS. RESULTS A total of 1,778 patients were identified in the FCDS and 6,027 in the SEER. Median diagnosis age was 17 years in both cohorts. In the FCDS, Blacks had worse OS than Whites and Hispanics at 25 years (33% vs. 49.2% vs. 44.7%, respectively; P = 0.0005), and Black race was associated with inferior OS on multivariate regression (hazard ratio [HR]: 1.81, P = 0.0003). In the SEER, Blacks had inferior OS (Blacks 74.2% vs. Whites 82% vs. Hispanics 82%; P = 0.0005) and DSS (85.7% vs. 90.8% vs. 88.1%, respectively; P = 0.0002) at 25 years. Hispanic males had inferior DSS compared to White males (84.8% vs. 90.6%; P = 0.0478), and Hispanic race was a predictor for inferior DSS on multivariate analysis (HR: 1.238; P < 0.0001). CONCLUSIONS Racial/ethnic disparities persist in the pediatric HL population despite modern treatment; underlying causes of these disparities are complex and need further examination.
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90
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Kwon D, Kim S, Kim PJ, Go H, Nam SJ, Paik JH, Kim YA, Kim TM, Heo DS, Kim CW, Jeon YK. Clinicopathological analysis of programmed cell death 1 and programmed cell death ligand 1 expression in the tumour microenvironments of diffuse large B cell lymphomas. Histopathology 2015; 68:1079-89. [DOI: 10.1111/his.12882] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 09/25/2015] [Indexed: 01/10/2023]
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91
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Patel M, Stoyanova R, Kwon D, Abraham S, Padgett K, Abramowitz M, Punnen S, Pollack A. Erectile Tissue Quantitative DCE-MRI Parameters and Sexual Function Before and After Radiation Therapy in Men With Prostate Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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92
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Kwon D, Min S, Hwang S, Kim M. Measurement of soft tissue change using 3D scanner in orthognathic surgery patient. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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93
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Min S, Nam H, Kwon D, Hwang S, Kim M. Correlation of maxillo-mandibular skeletal changes and change of lip canting in two jaw orthognathic surgery for correction of facial asymmetry. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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94
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Kwon D, Choi J, Jung J. Efficacy of botulinum toxin injection in treatment of hemifacial spasm: quality of life, anxiety, depression and somatic symptoms. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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95
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Kwon D, Saadeldin IM, Kim SJ, Park SJ, Kang JT, Park HJ, Moon JH, Koo OJ, Jang G, Lee BC. Optimizing electrical activation of porcine oocytes by adjusting pre- and post-activation mannitol exposure times. Reprod Domest Anim 2014; 49:995-9. [PMID: 25256295 DOI: 10.1111/rda.12420] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 08/10/2014] [Indexed: 11/29/2022]
Abstract
Modifying electrical activation conditions have been used to improve in vitro embryo production and development in pigs. However, there is insufficient information about correlations of porcine embryo development with oocyte pre- and post-activation conditions. The purpose of this study was to compare the developmental rates of porcine oocytes subjected to different mannitol exposure times, either pre- or post-electrical activation, and to elucidate the reason for the optimal mannitol exposure time. Mannitol exposure times around activation were adjusted as 0, 1, 2 or 3 min. Blastocyst development were checked on day 7. Exposure of oocytes to mannitol for 1 or 2 min before electrical activation produced significantly higher blastocyst rates than exposure for 0 or 3 min. There was no significant difference in blastocyst rates when activated oocytes were exposed to mannitol for 0, 1, 2 or 3 min after electrical activation. While exposure of oocytes to mannitol for 1 min pre- and 3 min post-activation showed significantly higher blastocyst development than 0 min pre- and 0 min post-activation. It also showed higher maintenance of normal oocyte morphology than exposure for 0 min pre- and 0 min post-activation. In conclusion, exposure of oocytes to mannitol for 1 min pre- and 3 min post-activation seems to be optimal for producing higher in vitro blastocyst development of porcine parthenogenetic embryos. The higher blastocyst development is correlated with higher maintenance of normal morphology in oocytes exposed to mannitol for 1 min pre- and 3 min post-activation.
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96
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Scott M, Stoyanova R, Abramowitz M, Casillas V, Ishkanian A, Kwon D, Lynne C, Pollack A. MRI Ultrasound Fusion-Guided Biopsy of the Prostate: Results of Initial Experience in a Radiation Oncology Department. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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97
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Verma J, Kwon D, Reis I, Takita C. Breast Cancer Subtype and Locoregional Outcomes in Locally Advanced Breast Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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98
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Mahmoud O, Dosch A, Kwon D, Pitcher J, Conway S, Benedetto P, Fernandez G, Trent J, Temple H, Wolfson A. Timing of Adjuvant Chemotherapy/External Beam Radiation Therapy and Its Impact on Extremity Soft Tissue Sarcomas Outcome. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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99
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Kim JH, Song AR, Sohn HJ, Lee J, Yoo JK, Kwon D, Shin HJ. IL-1β and IL-6 activate inflammatory responses of astrocytes againstNaegleria fowleriinfection via the modulation of MAPKs and AP-1. Parasite Immunol 2013. [DOI: 10.1111/pim.12021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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100
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Ly B, Kwon D, Reis I, Jauhari S, Wright J, Gunaseelan V, Takita C. Comparison of Clinical Outcomes in Early Stage Triple Negative Breast Cancer Treated With Mastectomy Versus Breast Conserving Therapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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