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Kim HS, Kim TH, Suh DH, Kim SY, Kim MA, Jeong CW, Hong KS, Song YS. Success Factors of Laparoscopic Nerve-sparing Radical Hysterectomy for Preserving Bladder Function in Patients with Cervical Cancer: A Protocol-Based Prospective Cohort Study. Ann Surg Oncol 2015; 22:1987-1995. [DOI: 10.1245/s10434-014-4197-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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Park MJ, Kim MA, Shin MK, Min HS. Follicular proliferative lesion arising in struma ovarii. J Pathol Transl Med 2015; 49:262-6. [PMID: 26018519 PMCID: PMC4440939 DOI: 10.4132/jptm.2015.03.26] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 03/21/2015] [Accepted: 03/26/2015] [Indexed: 11/26/2022] Open
Abstract
Malignant struma ovarii is extremely rare and difficult to diagnose histologically, particularly in cases of follicular carcinoma. This case study is intended to describe three cases of follicular proliferative lesion arising in struma ovarii that we experienced. The first case was clearly malignant given the clinical picture of multiple recurrences, but there was little histological evidence of malignancy. Our second case featured architectural and cellular atypia and necrosis and was diagnosed as malignant despite the absence of vascular and stromal invasion. Our third case exhibited solid microfollicular proliferation without any definite evidence of malignancy (even the molecular data was negative); however, we could not completely exclude malignant potential after conducting a literature review. In cases such as our third case, it has been previously suggested that a diagnostic term recognizing the low-grade malignant potential, such as “proliferative stromal ovarii” or “follicular proliferative lesion arising in the stromal ovarii” would be appropriate.
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Yoon J, Ko YS, Cho SJ, Park J, Choi YS, Choi Y, Pyo JS, Ye SK, Youn HD, Lee JS, Chang MS, Kim MA, Lee BL. Signal transducers and activators of transcription 3-induced metastatic potential in gastric cancer cells is enhanced by glycogen synthase kinase-3β. APMIS 2015; 123:373-82. [PMID: 25846563 DOI: 10.1111/apm.12370] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 01/02/2015] [Indexed: 01/29/2023]
Abstract
The transcription factor signal transducers and activators of transcription 3 (STAT3) can promote cancer metastasis, but its underlying regulatory mechanisms in gastric cancer cell invasiveness still remain obscure. We investigated the relationship between STAT3 and glycogen synthase kinase-3β (GSK-3β) and its significance in metastatic potential in gastric cancer cells. Immunohistochemical tissue array analysis of 267 human gastric carcinoma specimens showed that the expressions of active forms of STAT3 (pSTAT3) and GSK-3β (pGSK-3β) were found in 68 (25%) and 124 (46%) of 267 gastric cancer cases, respectively, showing a positive correlation (p < 0.001). Cell culture experiments using gastric cancer cell lines SNU-638 and SNU-668 revealed that STAT3 suppression did not affect pGSK-3β expression, whereas GSK-3β inhibition reduced pSTAT3 expression. With respect to metastatic potential in gastric cancer cells, both STAT3 suppression and GSK-3β inhibition decreased cell migration, invasion, and mesenchymal marker (Snail, Vimentin, and MMP9) expression. Moreover, the inhibitory effects of STAT3 and GSK-3β on cell migration were synergistic. These results demonstrated that STAT3 and GSK-3β are positively associated and synergistically contribute to metastatic potential in gastric cancer cells. Thus, dual use of STAT3 and GSK-3β inhibitors may enhance the efficacy of the anti-metastatic treatment of gastric cancer.
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Choi WS, Choi JH, Kwon KT, Seo K, Kim MA, Lee SO, Hong YJ, Lee JS, Song JY, Bang JH, Choi HJ, Choi YH, Lee DG, Cheong HJ. Revised adult immunization guideline recommended by the korean society of infectious diseases, 2014. Infect Chemother 2015; 47:68-79. [PMID: 25844267 PMCID: PMC4384453 DOI: 10.3947/ic.2015.47.1.68] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Indexed: 11/24/2022] Open
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Lee JY, Youm J, Kim JW, Cho JY, Kim MA, Kim TH, Suh DH, Lim MC, Park NH, Song YS. Identifying a low-risk group for parametrial involvement in microscopic Stage IB1 cervical cancer using criteria from ongoing studies and a new MRI criterion. BMC Cancer 2015; 15:167. [PMID: 25885786 PMCID: PMC4374417 DOI: 10.1186/s12885-015-1184-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 03/12/2015] [Indexed: 11/10/2022] Open
Abstract
Background There are currently three ongoing studies on less radical surgery in cervical cancer: ConCerv, GOG-278, and SHAPE. The aim of this study was to evaluate the performance of the criteria used in ongoing studies retrospectively and suggest a new, simplified criterion in microscopic Stage IB1 cervical cancer. Methods A retrospective analysis was performed in 125 Stage IB1 cervical cancer patients who had no clinically visible lesions and were allotted based on microscopic findings after conization. All patients had magnetic resonance imaging (MRI) after conization and underwent type C2 radical hysterectomy. We suggested an MRI criterion for less radical surgery candidates as patients who had no demonstrable lesions on MRI. The rates of parametrial involvement (PMI) were estimated for patients that satisfied the inclusion criteria for ongoing studies and the MRI criterion. Results The rate of pathologic PMI was 5.6% (7/125) in the study population. ConCerv and GOG-278 identified 11 (8.8%) and 14 (11.2%) patients, respectively, as less radical surgery candidates, and there were no false negative cases. SHAPE and MRI criteria identified 78 (62.4%) and 74 (59.2%) patients, respectively, as less radical surgery candidates; 67 patients were identified as less radical surgery candidates by both sets of criteria. Of these 67 patients, only one had pathologic PMI with tumor emboli. Conclusions This study suggests that the criteria used in three ongoing studies and a new, simplified criterion using MRI can identify candidates for less radical surgery with acceptable false negativity in microscopic Stage IB1 disease.
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Lee JY, Youm J, Kim JW, Kim K, Kim HJ, Cho JY, Kim MA, Park NH, Song YS. An Alternative Triage Strategy Based on Preoperative MRI for Avoiding Trimodality Therapy in Stage IB Cervical Cancer. Cancer Res Treat 2015; 48:259-65. [PMID: 25797571 PMCID: PMC4720075 DOI: 10.4143/crt.2014.370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 02/24/2015] [Indexed: 01/03/2023] Open
Abstract
Purpose Adjuvant chemoradiation following primary surgery is frequently indicated in patients with stage IB cervical cancer. The aim of this study is to evaluate the role of a magnetic resonance imaging (MRI)-based strategy in avoiding trimodality therapy. Materials and Methods We retrospectively reviewed all patients with stage IB cervical cancer treated initially with primary surgery at Seoul National University Hospital. We suggest an alternative triage strategy in which the primary treatment modality is determined based on preoperative MRI findings. Using this strategy, primary surgery is only indicated when there is no evidence of parametrial involvement (PMI) and lymph node metastasis (LNM) in the MRI results; when there is evidence of either or both of these factors, primary chemoradiation is selected. Assuming that this strategy is applied to our cohort, we evaluate how the rate of trimodality therapy is affected. Results Of the 254 patients in our sample, 77 (30.3%) had at least one category 1 risk factor (PMI, LNM, positive resection margin) upon pathologic examination. If the MRI-based strategy had been applied to our cohort, 168 patients would have undergone primary surgery and 86 would have undergone primary chemoradiation. Only 25 patients (9.8%) would have required trimodality therapy based on an indication of at least one category 1 pathologic risk factor following radical hysterectomy. Conclusion The inclusion of MRI in the decision-making process for primary treatment modality could have reduced the number of patients requiring trimodality therapy based on the indication of a category 1 risk factor from 30.3% to 9.8% in our cohort.
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Lee JY, Yoon JK, Kim B, Kim S, Kim MA, Lim H, Bang D, Song YS. Tumor evolution and intratumor heterogeneity of an epithelial ovarian cancer investigated using next-generation sequencing. BMC Cancer 2015; 15:85. [PMID: 25881093 PMCID: PMC4346117 DOI: 10.1186/s12885-015-1077-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 02/10/2015] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND The extent to which metastatic tumors further evolve by accumulating additional mutations is unclear and has yet to be addressed extensively using next-generation sequencing of high-grade serous ovarian cancer. METHODS Eleven spatially separated tumor samples from the primary tumor and associated metastatic sites and two normal samples were obtained from a Stage IIIC ovarian cancer patient during cytoreductive surgery prior to chemotherapy. Whole exome sequencing and copy number analysis were performed. Omental exomes were sequenced with a high depth of coverage to thoroughly explore the variants in metastatic lesions. Somatic mutations were further validated by ultra-deep targeted sequencing to sort out false positives and false negatives. Based on the somatic mutations and copy number variation profiles, a phylogenetic tree was generated to explore the evolutionary relationship among tumor samples. RESULTS Only 6% of the somatic mutations were present in every sample of a given case with TP53 as the only known mutant gene consistently present in all samples. Two non-spatial clusters of primary tumors (cluster P1 and P2), and a cluster of metastatic regions (cluster M) were identified. The patterns of mutations indicate that cluster P1 and P2 diverged in the early phase of tumorigenesis, and that metastatic cluster M originated from the common ancestral clone of cluster P1 with few somatic mutations and copy number variations. CONCLUSIONS Although a high level of intratumor heterogeneity was evident in high-grade serous ovarian cancer, our results suggest that transcoelomic metastasis arises with little accumulation of somatic mutations and copy number alterations in this patient.
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Park J, Ko YS, Yoon J, Kim MA, Park JW, Kim WH, Choi Y, Kim JH, Cheon Y, Lee BL. The forkhead transcription factor FOXO1 mediates cisplatin resistance in gastric cancer cells by activating phosphoinositide 3-kinase/Akt pathway. Gastric Cancer 2015; 17:423-30. [PMID: 24202965 DOI: 10.1007/s10120-013-0314-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 10/21/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND Cisplatin (CDDP) is one of the most important chemotherapeutic agents in the treatment of advanced gastric cancer, but its efficacy is limited by CDDP resistance. Because the transcription factor FOXO1 is related to chemoresistance in various cancer cells, we investigated the function of FOXO1 in CDDP resistance in human gastric cancer cells. METHODS Human gastric cancer cell lines MKN45 and SNU-601 were used. FOXO1 activation was modulated by transfection of FOXO1 AAA mutant gene or FOXO1 shRNA. The effects of FOXO1 on cell growth and CDDP cytotoxicity were assessed by crystal violet assay. Protein expressions of FOXO1, p110α, pAkt, and Akt were analyzed by Western blotting, and FOXO1 mRNA expression was evaluated by semiquantitative reverse transcription-polymerase chain reaction. FOXO1 activity was determined by luciferase reporter assay, and cell apoptosis was assessed by DAPI staining and Western blotting for PARP cleavage. RESULTS Cisplatin treatment induced FOXO1 expression and activation in both gastric cancer cell lines. FOXO1 overexpression increased the CDDP resistance without changes in cell growth, whereas FOXO1 silencing enhanced CDDP cytotoxicity along with apoptotic characteristics. Both constitutive and CDDP-induced FOXO1 activations were accompanied by an increase in p110α and pAkt expression. Furthermore, Akt inhibition by LY294002 treatment restored the CDDP cytotoxicity that was suppressed by FOXO1 overexpression. CONCLUSION FOXO1 inhibits CDDP-induced apoptosis in gastric cancer cells via activating PI3K/Akt pathway. Thus, FOXO1 may be an useful pharmacological indicator to predict CDDP efficacy in gastric cancer treatment.
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Baek HW, Park MJ, Rhee YY, Lee KB, Kim MA, Park IA. Diagnostic accuracy of endoscopic ultrasound-guided fine needle aspiration cytology of pancreatic lesions. J Pathol Transl Med 2015; 49:52-60. [PMID: 25812658 PMCID: PMC4357401 DOI: 10.4132/jptm.2014.10.26] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/24/2014] [Accepted: 10/24/2014] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Endoscopic ultrasound-guided fine needle aspiration cytology (EUS-FNAC) is currently the most commonly used procedure for obtaining cytologic specimens of the pancreas. It is accurate, minimally invasive, safe and cost-effective. However, there is discrepancy between cytological and surgical diagnoses. This study was aimed at evaluating the diagnostic accuracy of EUS-FNAC of the pancreas. METHODS We performed a retrospective review of 191 cases of pancreatic lesions initially diagnosed by EUS-FNAC with subsequent histological diagnosis between 2010 and 2012 in the Department of Pathology, Seoul National University Hospital. Cytologic and surgical diagnoses were categorized into five groups: negative, benign, atypical, malignant, and insufficient for diagnosis. Subsequently, 167 cases with satisfactory yield in both surgical and cytology specimens were statistically analyzed to determine correlations with diagnosis. RESULTS In comparison to surgical diagnoses, cytologic diagnoses were true-positive in 103 cases (61.7%), true-negative in 28 cases (16.8%), false-positive in 9 cases (5.4%), and false-negative in 27 cases (16.1%). The diagnostic accuracy was 78.4%, sensitivity was 79.2%, and specificity was 75.7%. The positive predictive value was 92.0%, and negative predictive value was 50.9%. CONCLUSIONS EUS-FNAC has high accuracy, sensitivity, specificity and positive predictive value. Overcoming the limitations of EUS-FNAC will make it a useful and reliable diagnostic tool for accurate evaluation of pancreatic lesions.
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Choi WS, Choi JH, Kwon KT, Seo K, Kim MA, Lee SO, Hong YJ, Lee JS, Song JY, Bang JH, Choi HJ, Choi YH, Lee DG, Cheong HJ. Erratum: Revised Adult Immunization Guideline Recommended by the Korean Society of Infectious Diseases, 2014. Infect Chemother 2015; 47:154. [PMID: 26157599 PMCID: PMC4495279 DOI: 10.3947/ic.2015.47.2.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Butorin NN, Tsukanov VV, Vasjutin AV, Reznikova OS, Vershinina GR, Kim MA. [ESOPHAGITIS, CAUSED BY HERPES SIMPLEX VIRUS: CASE REPORT]. EKSPERIMENTAL'NAIA I KLINICHESKAIA GASTROENTEROLOGIIA = EXPERIMENTAL & CLINICAL GASTROENTEROLOGY 2015:94-97. [PMID: 26415273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The clinical observation of the patient at the age of 56 years, with lesions of the esophagus by the herpes simplex virus has been presented. The patient complained of odynophagia and dysphagia. Treatment with proton pump inhibitors in outpatient stage was not effective. On endoscopic examination revealed multiple ulcers in all parts of the esophagus. Herpes simplex virus has been detected in biopsy specimens of esophageal mucosa by the PCR method. Treatment with acyclovir led to rapid and complete clinical recovery. Analysis of the literature allowed making the conclusion about the importance and actuality this demonstration.
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Choi J, Lee HE, Kim MA, Jang BG, Lee HS, Kim WH. Analysis of MET mRNA expression in gastric cancers using RNA in situ hybridization assay: its clinical implication and comparison with immunohistochemistry and silver in situ hybridization. PLoS One 2014; 9:e111658. [PMID: 25364819 PMCID: PMC4218795 DOI: 10.1371/journal.pone.0111658] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 10/06/2014] [Indexed: 02/07/2023] Open
Abstract
We investigated MET mRNA expression status using RNA in situ hybridization (ISH) technique in primary and metastatic lesions of 535 surgically resected gastric carcinoma (GC) cases. We compared the results with those of immunohistochemistry and silver in situ hybridization, and examined the association with clinicopathologic characteristics and prognosis. Among 535 primary GCs, 391 (73.1%) were scored 0, 87 (16.3%) were scored 1, 38 (7.1%) were scored 2, 12 (2.2%) were scored 3 and 7 (1.3%) were scored 4 by RNA ISH. High MET mRNA expression (score ≥3) was associated with lymph node metastasis (P = .014), distant metastasis (P = .001), and higher TNM stage (P<.001). MET mRNA expression was correlated with protein expression (r = 0.398; P<.001) and gene copy number (r = 0.345; P<.001). The patients showing high-MET mRNA in primary or metastatic lesions had shorter overall survival than those showing low-MET mRNA (primary tumors, P = .002; metastatic lymph nodes, P<.001). The patients showing positive conversion of MET mRNA status in metastatic lymph node had shorter overall survival than those with no conversion (P = .011). Multivariate analysis demonstrated that high MET mRNA expression in metastatic lymph node was an independent prognostic factor for overall survival (P = .007). Therefore, this study suggests that MET mRNA expression assessed by RNA ISH could be useful as a potential marker to identify MET oncogene-addicted GC.
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Kim MA, Simovanian ÉN, Alutina ÉL, Kharseeva GG. [Apoptogenic activity of microbes-associants during Epstein-Barr virus infection]. ZHURNAL MIKROBIOLOGII, EPIDEMIOLOGII I IMMUNOBIOLOGII 2014:81-85. [PMID: 25816519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM Study apoptogenic activity of-microbes-associants during Epstein-Barr virus infection (EBVI) on the model of mice peritoneal macrophages in vitro. MATERIALS AND METHODS Evaluation of apoptosis induced by bacteria isolated from EBVI patients was carried out by characteristic morphological changes of macrophages in smears stained by May-Grunwald with additional staining by Romanowsky-Giemsa. RESULTS All the EBVI microbes-associants were established to have apoptogenic activity, however, the highest pathogenic potential was noted in Streptococcus pyogenes. CONCLUSION The presence of apoptogenic activity in bacterial microflora accompanying EBVI against immune system cells could serve as means of their survival and be the pathogenetic basis for prolonged persistence in the organism.
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Suh DH, Kim MA, Kim HS, Chung HH, Park NH, Song YS, Kang SB. L1 cell adhesion molecule expression is associated with pelvic lymph node metastasis and advanced stage in diabetic patients with endometrial cancer: a matched case control study. J Cancer Prev 2014; 19:231-9. [PMID: 25337593 PMCID: PMC4189503 DOI: 10.15430/jcp.2014.19.3.231] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 08/31/2014] [Accepted: 09/01/2014] [Indexed: 11/26/2022] Open
Abstract
Background: Diabetic patients with endometrial cancer had more lymph node metastasis than non-diabetic patients with endometrial cancer. L1 cell adhesion molecule (L1CAM) could be possibly associated with lymph node metastasis in diabetic patients with endometrial cancer via epithelial-mesenchymal transition. We aimed to investigate the association between L1CAM expression and lymph node metastasis in diabetic patients with endometrial cancer. Methods: We conducted a matched case control study of 68 endometrial cancer patients who comprise each 34 diabetic and non-diabetic patients. L1CAM expression was evaluated by immunohistochemistry using fresh formalin-fixed paraffin-embedded tissue block of the patients. The association between L1CAM expression and pelvic lymph node metastasis was assessed according to the presence of diabetes. Results: Of the 68 patients, 13 (19.1%) were positive for L1CAM immunostaining. Positive rate of L1CAM expression in diabetic endometrial cancer patients was similar to that in non-diabetic endometrial cancer patients (14.7% vs. 23.5%, P = 0.355). Tumor recurred more frequently in patients with positive L1CAM expression than those with negative L1CAM expression (33.3% vs. 1.6%, P = 0.019). However, we failed to find any significant association between L1CAM expression and lymph node metastasis. Only for the diabetic patients (n = 34), patients with pelvic lymph node metastasis had more L1CAM expression than those without lymph node metastasis (50.0% vs. 3.6%, P = 0.035). Advanced stage was the only risk factor for recurrence that showed a significant association with L1CAM expression for the diabetic endometrial cancer patients (P = 0.006), as well as all the enrolled patients (P = 0.014). Conclusion: L1CAM expression is associated with pelvic lymph node metastasis and advanced stage in diabetic patients with endometrial cancer.
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Nam KH, Kim MA, Choe G, Kim WH, Lee HS. Deregulation of the cell polarity protein Lethal giant larvae 2 (Lgl2) correlates with gastric cancer progression. Gastric Cancer 2014; 17:610-20. [PMID: 24337435 DOI: 10.1007/s10120-013-0324-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 11/24/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND We investigated the roles of Lethal giant larvae 2 (Lgl2), an epithelial cell polarity protein, during gastric carcinogenesis and gastric cancer (GC) progression and evaluated the correlation of Lgl2 with epithelial-mesenchymal transition (EMT) markers. METHODS Lgl2 protein and mRNA expression were determined by immunohistochemistry and mRNA in situ hybridization in a large series of GC and preneoplastic lesions. Additionally, expression of 7 EMT markers was examined by immunohistochemistry. RESULTS Loss of membrane Lgl2 staining in GC was observed in 347 of 409 GCs. Lgl2 loss was associated with diffuse histological type (P < 0.001), advanced stage (P = 0.021), and worse prognosis (P = 0.047). Furthermore, Lgl2 loss correlated with reduced E-cadherin expression (P < 0.01) and increased expression of vimentin (P < 0.01). Combined analysis of Lgl2 and the EMT markers, S100A4 and MMP2, improved predictions of patient outcomes. During gastric carcinogenesis, membrane expression of Lgl2 was progressively lost in 4 % of normal mucosa, 75 % of intestinal metaplasia, 58 % of gastric dysplasia, 69 % of intestinal type GC, and 96 % of diffuse type GC. CONCLUSIONS Our results suggest that Lgl2 loss occurs at an early stage of gastric carcinogenesis and contributes to GC progression.
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Kim MA, Lee YS, Won Lee C, Seo K, Lee CW. Expression of S100A14 in placenta and its potential role in chorioamnionitis. Placenta 2014. [DOI: 10.1016/j.placenta.2014.06.288] [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: 11/30/2022]
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Lee JY, Jo YR, Kim TH, Kim HS, Kim MA, Kim JW, Park NH, Song YS. Safety of fertility-sparing surgery in primary mucinous carcinoma of the ovary. Cancer Res Treat 2014; 47:290-7. [PMID: 25287480 PMCID: PMC4398117 DOI: 10.4143/crt.2014.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Accepted: 02/05/2014] [Indexed: 11/27/2022] Open
Abstract
Purpose The aim of this study is to evaluate the safety of fertility-sparing surgery as the treatment for patients with primary mucinous epithelial ovarian cancer. Materials and Methods A retrospective study of patients with mucinous ovarian cancer between 1991 and 2010 was performed. The demographics and survival outcomes were compared between patients who underwent fertility-sparing surgery and those who underwent radical surgery. Results A total of 110 patients underwent primary surgery. At the time of surgery, tumors appeared to be grossly confined to the ovaries in 90 patients, and evidence of metastasis was definite in 20 patients. Of the 90 patients with tumors that appeared to be grossly confined to the ovaries at surgical exploration, 35 (38.9%) underwent fertility-sparing surgery. The Kaplan- Meier curve and the log rank test showed no difference in either recurrence-free survival (p=0.792) or disease-specific survival (p=0.706) between the two groups. Furthermore, there was no significant difference in recurrence-free survival (p=0.126) or disease-specific survival (p=0.377) between the two groups, even when the analysis was limited to women below the age of 40. In a multivariate Cox model, fertility-sparing surgery had no effect on either recurrence-free survival (recurrence hazard ratio [HR], 1.20; 95% confidence interval [CI], 0.25 to 5.71) or disease-specific survival (death HR, 0.88; 95% CI, 0.17 to 4.60). Conclusion Fertility-sparing surgery in primary mucinous cancer grossly confined to the ovaries may be a safe option and one not associated with an increase in recurrence or mortality.
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Lee JY, Youm J, Kim TH, Cho JY, Kim MA, Suh DH, Lim MC, Kim JW, Park NH, Song YS. Preoperative MRI criteria for trials on less radical surgery in Stage IB1 cervical cancer. Gynecol Oncol 2014; 134:47-51. [DOI: 10.1016/j.ygyno.2014.02.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 01/25/2014] [Accepted: 02/03/2014] [Indexed: 11/24/2022]
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Yu DA, Yoon J, Ko YS, Park J, Kim SY, Kim MA, Kim JH, Jung J, Cheon Y, Lee HS, Kim WH, Lee BL. Forkhead transcription factor FOXO1 inhibits nuclear factor-κB in gastric cancer. APMIS 2014; 122:848-55. [DOI: 10.1111/apm.12247] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 12/18/2013] [Indexed: 12/28/2022]
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Ahn JY, Hwang HS, Park YS, Kim HR, Jung HY, Kim JH, Lee SE, Kim MA. Endoscopic and pathologic findings associated with clinical outcomes of melanoma in the upper gastrointestinal tract. Ann Surg Oncol 2014; 21:2532-9. [PMID: 24633670 DOI: 10.1245/s10434-014-3637-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND Melanoma that involves the upper gastrointestinal (GI) tract is rare and studies relating to endoscopic and pathologic findings with clinical outcomes are lacking. We reviewed the gross and microscopic patterns of the upper GI tract in primary and metastatic melanoma, and examined their association with clinical outcomes. METHODS Twenty-nine cases of primary esophageal (n = 19) and metastatic gastric and/or duodenal melanoma (n = 10) that were detected during upper GI endoscopy between 1995 and 2011 were retrospectively analyzed. RESULTS Three types of gross patterns were recognized-nodular pattern in 7 cases, mass-forming pattern in 18 cases, and flat pigmented pattern in 4 cases. In primary esophageal melanoma, 13 patients (68.4 %) underwent surgery and 9 received palliative therapy. Of all cases, 22 patients (75.9 %) died of disease progression; the median overall survival period was 12 months (interquartile range [IQR] 4.5-24.5 months), and from recognition of upper GI tract melanoma the median overall survival period was 9 months (IQR 3.5-17.0 months). In primary esophageal cases, skin melanoma stage better discriminated the patients with good prognosis than the esophageal cancer stage. The flat pigmented gross pattern proved to be a good prognostic factor in primary and metastatic GI tract melanomas (p = 0.016 and p = 0.046, respectively). CONCLUSIONS Melanoma of the GI tract is a highly aggressive disease with a poor prognosis, both in primary and metastatic cases. However, in primary esophageal melanoma, careful inspection of the mucosa during endoscopic examination followed by surgical resection may result in extended survival.
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Byeon SJ, Han N, Choi J, Kim MA, Kim WH. Prognostic implication of TSC1 and mTOR expression in gastric carcinoma. J Surg Oncol 2014; 109:812-7. [PMID: 24615476 DOI: 10.1002/jso.23585] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 01/31/2014] [Indexed: 12/16/2022]
Abstract
BACKGROUND Gastric adenocarcinoma is the sixth most common and third most lethal cancer in the world. Except for HER2-targeted therapy, targeted agents against specific molecules participating in gastric carcinogenesis, including those in the mechanistic target of rapamycin (serine/threonine kinase) (mTOR) pathway have not been proved to be effective. However, some studies have suggested that dysfunction of TSC1 may augment mTOR inhibitor activity. METHODS We studied p-mTOR and TSC1 status by immunohistochemical analysis of gastric carcinoma samples using a tissue microarray method and expression values adopted from The Cancer Genome Atlas. RESULTS High p-mTOR and low TSC1 expression status is associated with adverse clinicopathologic parameters. Patients with high p-mTOR levels showed poor survival. Patients with low TSC1 levels showed unfavorable survival status in the overall patients group. The combination of p-mTOR status and TSC1 status provided more strong survival information than using each parameter alone. CONCLUSIONS In gastric cancer, high p-mTOR expression level is a statistically significant parameter in multivariate and Kaplan-Meier analyses (log-rank test). In addition to p-mTOR, TSC1 expression provided additional information to predict survival. We therefore suggest that evaluation of both p-mTOR and TSC1 status may be helpful in clinical trials related to mTOR inhibitors.
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Lee TS, Jeon HW, Kim YB, Kim YA, Kim MA, Kang SB. Aberrant microRNA expression in endometrial carcinoma using formalin-fixed paraffin-embedded (FFPE) tissues. PLoS One 2013; 8:e81421. [PMID: 24363810 PMCID: PMC3867308 DOI: 10.1371/journal.pone.0081421] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Accepted: 10/12/2013] [Indexed: 12/15/2022] Open
Abstract
This study aimed to identify the candidate miRNAs in the carcinogenesis of endometrial carcinoma, and to explore whether FFPE material would be suitable for miRNA profiling. We identified the differences between miRNA expression profiles using human miRNA microarray in endometrioid endometrial adenocarcinomas (EECs) and normal endometria. Of those tested, miR-200a*, miR-200b*, miR-141, miR-182, and miR-205 were greatly enriched. The expressions of these five miRNAs were validated using quantitative real-time reverse transcription-PCR (qRT-PCR). We then performed qRT-PCR miR expression profiling in 30 FFPE specimens (20 EECs, 10 normal endometria) and re-confirmed the results of differential expression between cancer and normal tissue. Following this, we tested whether the specific inhibition of overexpressed miRNAs would alter chemosensitivity. In the in vitro cell viability assay, anti-miR200b* showed a trend toward enhanced cytotoxicity slightly in cisplatin compared to the negative control (p = 0.07). This information provided the candidate miRNAs for further confirmation of the role of miRNAs in the carcinogenesis of EECs, potentially serving as a diagnostic or therapeutic tool. FFPE specimens of endometrial tissues are suitable as a source for miRNA microarray profiling.
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Kim HS, Choi SI, Min HL, Kim MA, Kim WH. Mutation at intronic repeats of the ataxia-telangiectasia mutated (ATM) gene and ATM protein loss in primary gastric cancer with microsatellite instability. PLoS One 2013; 8:e82769. [PMID: 24324828 PMCID: PMC3855840 DOI: 10.1371/journal.pone.0082769] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Accepted: 10/27/2013] [Indexed: 11/18/2022] Open
Abstract
Ataxia-telangiectasia mutated (ATM) is a Ser/Thr protein kinase that plays a critical role in DNA damage-induced signaling and initiation of cell cycle checkpoint signaling in response to DNA-damaging agents such as ionizing radiation. We have previously reported the ATM protein loss by immunohistochemistry (IHC) in 16% of human gastric cancer (GC) tissue. We hypothesized that ATM gene intron mutations targeted by microsatellite instability (MSI) cause ATM protein loss in a subset of GC. We studied mononucleotide mutations at the intron of ATM gene, ATM IHC and MSI in GC. Ten human gastric cancer cell lines were studied for the ATM gene mutation at introns, RT-PCR, direct sequencing, and immunohistochemistry. GC tissues of 839 patients were analyzed for MSI and ATM IHC. Among them, 604 cases were analyzed for the ATM mutations at introns preceding exon 6, exon 10 and exon 20. Two human GC cell lines (SNU-1 and -638) showed ATM intron mutations, deletion in RT-PCR and direct sequencing, and ATM protein loss by IHC. The frequencies of ATM mutation, MSI, and ATM protein loss were 12.9% (78/604), 9.2% (81/882) and 15.2% (134/839), respectively. Analysis of associations among MSI, ATM gene mutation, and ATM protein loss revealed highly co-existing ATM gene alterations and MSI. ATM intron mutation and ATM protein loss were detected in 69.3% (52/75) and 53.3% (40/75) of MSI positive GC. MSI positivity and ATM protein loss were present in 68.4% (52/76) and 48.7% (37/76) of GC with ATM intron mutation. ATM mutation and ATM protein loss had characteristics of old age, distal location of tumor, large tumor size, and histologic intestinal type. Our study might be interpreted as that ATM gene mutation at intron might be targeted by MSI and lead to ATM protein loss in a selected group of GC.
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Kim JW, Im SA, Kim MA, Cho HJ, Lee DW, Lee KH, Kim TY, Han SW, Oh DY, Lee HJ, Kim TY, Yang HK, Kim WH, Bang YJ. Ataxia-telangiectasia-mutated protein expression with microsatellite instability in gastric cancer as prognostic marker. Int J Cancer 2013; 134:72-80. [DOI: 10.1002/ijc.28245] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 04/09/2013] [Indexed: 01/05/2023]
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Jung YY, Park IA, Kim MA, Min HS, Won JK, Ryu HS. Application of chemokine CXC motif ligand 12 as a novel diagnostic marker in preoperative fine-needle aspiration biopsy for papillary thyroid carcinoma. Acta Cytol 2013; 57:447-54. [PMID: 24021782 DOI: 10.1159/000351305] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Accepted: 04/10/2013] [Indexed: 01/21/2023]
Abstract
OBJECTIVES A panel composed of three immunomarkers, cytokeratin 19, HBME-1 and galectin-3, is recommended for improving the accuracy of diagnosing papillary thyroid carcinoma (PTC), but the results are sometimes inconsistent and difficult to interpret. We used immunocytochemistry to assess the utility of chemokine CXC ligand 12 (CXCL12) as a novel diagnostic marker for PTC employing paraffin-embedded cell blocks. METHODS We analyzed the expression of CXCL12 using immunocytochemical staining in 82 cases of thyroid lesions (47 PTCs and 35 thyroid lesions other than PTC). To determine the optimal cut-off value for the assessment of CXCL12 positivity, we used receiver operating characteristics (ROC). RESULTS ROC curves showed that the optimum diagnostic cut-off was 10% (area under the curve 0.950, 95% confidence interval 0.891-1.008), with exclusive CXCL12 expression in PTC compared to other thyroid lesions (p < 0.001). In total, more than 90% of the PTCs were associated with CXCL12 immunohistochemical staining, while only up to 11.4% of thyroid lesions other than PTC were positive for CXCL12. The follicular variant PTC showed 90% CXCL12 expression compared to 10.5% positivity in follicular neoplasm. CONCLUSION Our findings indicate that CXCL12 may be an effective supplementary diagnostic marker for PTC in preoperative fine-needle aspiration cytology using the cell block method.
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