- Survivin and Fas Ligand Expressions Are Correlated with Angiolymphatic Tumor Spread in Medullary Thyroid Carcinoma.
-
Min Kyung Kim, Jin Hee Sohn, Mee Joo, Hanseung Kim, Sung Hye Park, Seong Hoe Park, Eo Jin Kim, Seoung Wan Chae
-
Korean J Pathol. 2005;39(5):320-325.
-
-
-
 Abstract
 PDF
- BACKGROUND
Medullary thyroid carcinoma (MTC) that originates from C cells comprises about 10% of all the malignant thyroid tumors. Activating mutations of the RET proto-oncogene have been found to be involved in the anti-apoptotic pathway of MTC that harbors the RET mutation.
We investigated the correlation between the clinicopathologic parameters and the expressions of survivin, a novel anti-apoptotic molecule, and the other apoptosis-related proteins, and the known prognostic markers.
METHODS
Immunohistochemical staining was performed using antibodies for survivin, Fas, Fas ligand (FasL), bcl-2, calcitonin, CEA and cyclin A in 19 case of MTC; 10 sporadic MTCs, eight multiple endocrine neoplasia (MEN) type 2A MTCs and one familial MTC (FMTC).
RESULTS
Survivin protein expression was found in five cases (26%) and this was correlated with the presence of angiolymphatic tumor emboli (p=0.019). FasL was expressed in 14 cases (74%) and it had correlation with the presence of lymph node metastases (p=0.029). The cyclin A-labeling indices were correlated with local invasiveness (p=0.001).
CONCLUSIONS
Survivin and FasL might be involved in the lymphatic tumor spread of MTC.
- The Loss of Expression of Caveolin-1 in Gastrointestinal Stromal Tumors.
-
Eo Jin Kim, Jin Hee Sohn, Min Kyung Kim, Seoung Wan Chae, Hye Seung Lee, Eun Yoon Cho, Woo Ho Kim
-
Korean J Pathol. 2005;39(5):338-344.
-
-
-
Abstract
PDF
- BACKGROUND
The down-regulation of caveolin-1, a putative tumor suppressor gene, has been demonstrated in several types of sarcomas. However, it's not known whether or not the gastrointestinal stromal tumors (GISTs) express caveolin-1. We carried out this study to investigate the caveolin-1 expression in GISTs and to determine the correlation between the clinicopathologic profiles of GISTs and the expression of caveolin-1.
METHODS
One hundred eight cases of formalin-fixed and paraffin-embedded tissues of GISTs were immunohistochemically evaluated for the expression of caveolin-1 by using the tissue-array method. Survival data of 98 cases of primary GISTs was analysed according to the expression status of caveolin-1.
RESULTS
Ninety three cases (86.1%) of 108 GISTs did not express caveolin-1 protein. There was no correlation between the caveolin-1 expression status and any of the clinicopathologic variables, including mitosis (p=0.948) and tumor grade (p=0.334). The expression of caveolin-1 was not correlated with other immunohistochemical marker proteins including, c-kit (p=0.373), CD34 (p=0.437) and SMA (p=0.831). On the univariate analysis, the caveolin-1 expression status (p=0.635) was not a significant predictor of the disease-free survival for GIST patients.
CONCLUSIONS
The results of this study suggest that caveolin-1 might act as a tumor suppressor gene in the GIST oncogenesis, but it has no function as a prognostic marker for disease free survival.
- Expression of Actin-bundling Protein Fascin and its Relationship with Altered E-cadherin and beta-catenin Expressions in Ovarian Serous Neoplasms.
-
Eun Yoon Cho, YoonLa Choi, Seoung Wan Chae, Eo Jin Kim, Kyehyun Kim, Geung Hwan Ahn, Jin Hee Sohn
-
Korean J Pathol. 2005;39(4):258-264.
-
-
-
Abstract
PDF
- Background
: Fascin, an actin-bundling protein, has been found in specialized normal cells, including the neuronal, endothelial and dendritic cells, and its expression is known to be greatly increased in various human neoplasms. Methods : Immunohistochemical stainings for fascin, betacatenin, and E-cadherin were performed in normal ovary tissue (n=13), and in benign (n=14), borderline (n=32), and malignant (n=74) ovarian serous neoplasms. We evaluated the fascin expression, and its relationship with the betacatenin and E-cadherin expressions, as well as the clinicopathologic factors. Results : Fascin expression was detected in the majority of the borderline (100%, 32/32) and malignant tumors (90.5%, 67/74), but it was not seen in the normal ovarian surface epithelial cells and the benign tumors (p<0.001). Fascin expression was significantly correlated with the occurrence of peritoneal metastases in the carcinomas (p=0.043). A significant relationship between the expressions of fascin and betacatenin (p=0.046), as well as E-cadherin (p=0.035) was noted. There was no significant correlation with the tumor grade of carcinoma, the FIGO stage, tumor recurrence, tumor-related death and the survival rate. Conclusions : In ovarian serous neoplasms, the fascin expression may be closely linked with tumor progression and metastasis, and it was associated with the up-regulation of betacatenin and E-cadherin.
- Expression of pS2/TFF1 Protein in Normal Colonic Mucosa, Adenoma and Adenocarcinoma.
-
Seoung Wan Chae, Eun Yoon Cho, Eo Jin Kim, Jin Hee Sohn, Young Euy Park
-
Korean J Pathol. 2004;38(5):324-329.
-
-
-
Abstract
PDF
- BACKGROUND
The trefoil factor 1 protein (pS2/TFF1) is a candidate tumor-suppressor protein, and it is a pleiotropic factor involved in the organization and homeostasis of the gastrointestinal tract and various inflammatory or neoplastic diseases. The purpose of this study was to assess the expression of pS2/TFF1 and its clinicopathologic relationship, including the p53 and Ki-67 labeling index, in colorectal carcinogenesis.
METHODS
The expression of pS2/TFF1 protein was evaluated immunohistochemically in 45 samples of normal colonic mucosa, 43 samples of adenoma and 186 samples of colorectal carcinoma.
RESULTS
pS2/TFF1 protein was expressed weakly in 37.8% of normal colonic mucosa samples, and it had a weak to strong expression in 48.8% of adenomas and 28% of colorectal adenocarcinomas. pS2/TFF1 expression in carcinoma was slightly increased in the poorly differentiated group compared with the well to moderately differentiated group (p=0.059). Interestingly, mucinous carcinoma (4/4) and signet ring cell carcinoma (2/3) showed significant increase of pS2/TFF1 expression. pS2/TFF1 expression was inversely correlated with the p53 protein expression and the Ki-67 labelling index (p<0.05). There was no significant correlation with the tumor size, metastasis or pathologic staging.
CONCLUSIONS
Overexpression of pS2/TFF1 expression in colorectal adenocarcinoma was inversely correlated with the Ki-67 labelling index and the p53 expression in cancer.
These results suggest that pS2/TFF1 protein may contribute as tumor suppressor factor in colorectal adenocarcinoma.
- Morphologic Difference of the Atrial Chambers and Determination of the Atrial Situs in the Normal and Congenitally Malformed Heart.
-
Eo Jin Kim, Jeong Wook Seo
-
Korean J Pathol. 2004;38(3):174-180.
-
-
-
Abstract
PDF
- BACKGROUND
Identification of atrial situs is the initial step in any segmental analysis and classification of congenital heart malformations. To elucidate the differences for both atria of the normal and congenitally malformed heart, we performed morphological studies on the human heart with or without abnormal laterality syndrome.
METHODS
Five normally formed human hearts, five hearts with right isomerism and five hearts with left isomerism were used in this study. The postero-superior walls of the atrial chambers were examined.
RESULTS
Although the division line of the ventral and dorsal compartments was not as conspicuous as was seen in the right atrium of rat embryo previously studied, this division line existed as a well-developed terminal crest and vestigial structure of the antero-lateral extension of the terminal crest. These structures were noted in the right atrial chambers of normal human hearts and in the bilateral atrial chambers of right isomerism. However, they were totally absent in the bilateral atrial chambers in hearts with left isomerism.
CONCLUSIONS
Our study showed that the right atrial chamber in the normally developed human heart has vestigial components of division between the ventral and dorsal compartment, and hearts with right isomerism and left isomerism have differential development of the ventral and the dorsal compartment.
- Usefulness of Sputum Cytology as a Diagnostic Tool of Lung Cancer.
-
Eun Yoon Cho, Hee Dae Park, Sun Hee Kim, Woon Sun Park, Seoung Wan Chae, Eo Jin Kim, Jin Hee Sohn
-
Korean J Cytopathol. 2004;15(2):75-80.
-
-
-
Abstract
PDF
- To analyze the accuracy and usefulness of sputum cytology as a screening method, 103 cases of histologically proven lung cancer registered from 1998 to 2000 at Kangbuk Samsung Hospital were retrospectively examined. We reviewed the original cytologic and surgical diagnoses for the cases, and the cytology slides of all cytologically negative cases. The overall sensitivity of sputum cytology was 0.83 ; the sensitivity of prebronchoscopy sputum cytology for bronchogenic carcinoma was 0.87. Central tumor location (P=0.002), tumor size (>2.4 cm), (P=0.027) and the number of sputum samples (> or =3) (P=0.001) were associated with a positive cytologic diagnosis. Of the 18 cytologically negative cases, 9 cases (38% of smears) were determined to be insufficient for diagnosis, due strictly to low cellularity and saliva. After a review of the cytology slides of cytologically negative cases, we identified several atypical clusters in one case of bronchioloalveolar carcinoma. This negativity was thus attributed to an interpretation error (1/18, 5.6%). Our results suggest that its sensitivity is more strongly related to the specimen adequacy and the times of sampling than to interpretation error. In terms of sensitivity, specificity, accessibility, cost, and morbidity associated with the screening tests, sputum cytology was found to be an accurate effective screening method for lung cancer.
- Diagnostic Correlation and Accuracy Between Fine Needle Aspiration Cytology and Histopathologic Examination.
-
Jin Hee Sohn, Seoung Wan Chae, Eun Yoon Cho, Eo Jin Kim
-
Korean J Cytopathol. 2003;14(2):53-59.
-
-
-
Abstract
PDF
- Fine needle aspiration cytology (FNAC) has been known as a very sensitive and effective method for preoperative diagnosis. We studied cases preoperatively diagnosed by FNAC and confirmed by the histopathologic examination to define the effectiveness of FNAC. A total of 567 cases including breast, thyroid gland, lymph node, and soft tissue confirmed histologically after FNAC were enrolled, among 2,844 FNAC cases from January 1996 to March 2000. Overall sensitivity and specificity of FNAC were 93% and 100%, respectively.
Sensitivity and specificity of FNAC by sites or organs were 91% and 100% in breast, 100% and 100% in thyroid, 97% and 100% in lymph node, and 71% and 100% in soft tissue, respectively. Nine cases showed diagnostic discrepancy; eight cases of sampling error and one case of interpretation error. Five cases, diagnosed as fibrocystic change at FNAC but invasive ductal carcinoma after the histopathologic examination, were categorized as sampling error due to the presence of diffuse fibrosis or deep seated location. One case of breast, diagnosed descriptively as atypical ductal and stromal cells suggesting invasive ductal carcinoma at FNAC but malignant phyllodes tumor histologically, was categorized as interpretation error. Other cases of sampling errors were two cases of soft tissue, a case of lymph node, and a case of salivary gland.
- The Role of Cell Proliferation and Apoptosis in the Cardiac Development.
-
Eo Jin Kim, Hyo Soo Kim, Jeong Wook Seo
-
Korean J Pathol. 1998;32(12):1049-1057.
-
-
-
Abstract
- The functional and morphologic cardiac developments are determined by the morphogenesis, growth and remodeling of the heart resulted from the cell proliferation and apoptosis. We studied the distribution of the proliferation and apoptotic activity of myocardial cells according to the developmental stages in embryos of C57bl/6 mice. Serial histologic sections were stained with PCNA and TUNEL method and were analyzed with image analyzer (BMI, Seoul). The ventricular myocardium of an embryonic heart could be divided into trabecular, inner compact and outer compact layers. Proliferation indices at layers of the left ventricular myocardium on embryonal days (ED) 13, 14, 16, 17 and 18 were 19.9%/47.4%/60.4%, 16.1%/45.8%/60.3%, 24.6%/45.6%/38.1%, 23.3%/17.7%/18.3% and 31.2%/28.0%/19.4% (trabecular/ inner compact/ outer compact) and the right ventricle, 11.0%/34.4%/60.5%, 23.0%/44.0%/69.0%, 29.2%/42.9%/35.1%, 30.4%/30.5%/22.3% and 32.4%/28.4%/16.3%.
The apoptotic indices of the left ventricle/VIF were 0.23%/3.66% on ED 13-14, 0.42%/1.31% on ED 16 and 0.05%/0.60% on ED 17-18. The results show that the proliferation of the myocytes was maximal at the outer compact layer on ED 13 and 14 but lowest on ED 17 and 18.
This decrease was more pronounced at the left ventricle. The innermost trabecular layer showed a constant proliferation activity of 11.0-32.4%. The presence of spatiotemporal differences in the cell proliferation reveals regional regulation in the developmental timing of cardiac development. Functional maturation is considered to be responsible for the change of proliferation activity. The apoptosis was most frequent and intense in the VIF and crux throughout the periods of each embryonal day where as rarely seen in the ventricular myocardium, especially in the trabecular layer of myocardium. These findings suggest that the apoptosis plays the role in the development of atrioventricular, ventriculoarterial septation and valve formation. Our results also reveal that the participation of apoptosis in formation of the trabeculation can be denied.
|
E-submission
