Journal of Pathology and Translational Medicine

Original Article

Expression of MUC1 and MUC4 in Gallbladder Adenocarcinoma: Su-Mi Kim, Sun-Ju Oh, Bang Hur; Korean J Pathol. 2012;46(5):429-435. Published online October 25, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.5.429

7,692 View
57 Download
6 Crossref

Background

Recent reports have indicated that overexpression of mucin (MUC) 1 and/or MUC4 correlates with the occurrence and progression of extra-hepatobiliary malignancy. In this study, we investigated the expression of MUC1 and MUC4 and their prognostic significance in gallbladder adenocarcinoma.

Methods

We examined 54 surgical gallbladder adenocarcinoma samples by immunohistochemistry for MUC1 and MUC4 expression. Staining was evaluated as a sum score of extent and intensity, dividing the samples into low and high expression groups.

Results

The low expression group for both MUC1 and MUC4 was 10 samples (18.5%), and the high expression group was 44 samples (81.5%). High MUC1 expression was significantly correlated with more differentiated tumors (p=0.033), whereas high expression of MUC4 correlated with negative nodal status (p=0.012). Other pathological features were not correlated with MUC expression. Multivariate cox regression analysis showed that neither MUC1 nor MUC4 expression correlated with survival.

Conclusions

Although there were some correlations found, a prognostic role for either MUC1 or MUC4 expression in gallbladder carcinoma was not identified in this study. Further investigation is required.

Citations

Citations to this article as recorded by

Expression of Mucoproteins in Gallbladder Cancer
Puneet Kumar, Priyesh Shukla, Soni Kumari, Ruhi Dixit, Gopeshwar Narayan, V. K. Dixit, A. K. Khanna
Indian Journal of Surgery.2022; 84(3): 456. CrossRef
Prognostic and clinicopathological value of MUC1 expression in colorectal cancer
Chao Li, Tao Liu, Libin Yin, Didi Zuo, Yuyang Lin, Lei Wang
Medicine.2019; 98(9): e14659. CrossRef
Prognostic Significance of Mucin Antigen MUC1 in Various Human Epithelial Cancers
Feng Xu, Fuquan Liu, Hongwei Zhao, Guangyu An, Guosheng Feng
Medicine.2015; 94(50): e2286. CrossRef
Increased Expression of CCN2, Epithelial Membrane Antigen, and Fibroblast Activation Protein in Hepatocellular Carcinoma with Fibrous Stroma Showing Aggressive Behavior
Gi Jeong Kim, Hyungjin Rhee, Jeong Eun Yoo, Jung Eun Ko, Jee San Lee, Hyunki Kim, Jin Sub Choi, Young Nyun Park, Philip C. Trackman
PLoS ONE.2014; 9(8): e105094. CrossRef
State-of-the-art in the management of locally advanced and metastatic gallbladder cancer
Mairéad G. McNamara, Cristiane Metran-Nascente, Jennifer J. Knox
Current Opinion in Oncology.2013; 25(4): 425. CrossRef
Clinicopathological and Prognostic Significance of MUC-2, MUC-4 and MUC-5AC Expression in Japanese Gastric Carcinomas
Li-Jun Xiao, Shuang Zhao, En-Hong Zhao, Xin Zheng, Wen-Feng Gou, Ya-Nan Xing, Yasuo Takano, Hua-Chuan Zheng
Asian Pacific Journal of Cancer Prevention.2012; 13(12): 6447. CrossRef

Case Reports

Primary Perivascular Epithelioid Cell Tumor (PEComa) of the Liver: A Case Report and Review of the Literature.: Ji Hyun Ahn, Bang Hur; Korean J Pathol. 2011;45:S93-S97.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S93

4,131 View
36 Download
8 Crossref

Abstract PDF

Perivascular epithelioid cell tumor (PEComa) is a mesenchymal tumor consisting of distinctive perivascular epithelioid cells, and is commonly detected in the uterus. The liver is an uncommon site for primary PEComa. In this study, we report a case of primary hepatic PEComa in a 36-year-old woman. Upon gross examination, the tumor was a well-defined, brownish solid mass, measuring 6.5x5.2x4.5 cm. Microscopically, the tumor consisted largely of epithelioid cells and some spindle cells with a clear to eosinophilic cytoplasm and a rich network of delicate capillaries in the stroma. With the exception of their relatively large size and microscopically sinusoidal infiltrative growth pattern, all other histopathologic features of the tumor were consistent with their being benign. The tumor cells were positive for human melanoma black-45 and smooth muscle actin, and negative for cytokeratin-cocktail and c-kit.

Citations

Citations to this article as recorded by

Primary Liver Perivascular Epithelioid Cell Tumor (PEComa): Case Report and Literature Review
Mindaugas Kvietkauskas, Austeja Samuolyte, Rokas Rackauskas, Raminta Luksaite-Lukste, Gintare Karaliute, Vygante Maskoliunaite, Ruta Barbora Valkiuniene, Vitalijus Sokolovas, Kestutis Strupas
Medicina.2024; 60(3): 409. CrossRef
Unresectable hepatic PEComa: a rare malignancy treated with stereotactic body radiation therapy (SBRT) followed by complete resection
Simon Kirste, Gian Kayser, Anne Zipfel, Anca-Ligia Grosu, Thomas Brunner
Radiation Oncology.2018;[Epub] CrossRef
Hepatic perivascular epithelioid cell tumor (PEComa): a case report with a review of literatures
Hyun Jin Son, Dong Wook Kang, Joo Heon Kim, Hyun Young Han, Min Koo Lee
Clinical and Molecular Hepatology.2017; 23(1): 80. CrossRef
Malignant hepatic perivascular epithelioid cell tumor (PEComa) – Case report and a brief review
Banerjee Abhirup, Kundalia Kaushal, Mehta Sanket, Nagarajan Ganesh
Journal of the Egyptian National Cancer Institute.2015; 27(4): 239. CrossRef
Hepatic falciform ligament clear cell myomelanocytic tumor: A case report and a comprehensive review of the literature on perivascular epithelioid cell tumors
Zu-Sen Wang, Lin Xu, Lin Ma, Meng-Qi Song, Li-Qun Wu, Xuan Zhou
BMC Cancer.2015;[Epub] CrossRef
Improving recognition of hepatic perivascular epithelioid cell tumor: Case report and literature review
Toshiya Maebayashi
World Journal of Gastroenterology.2015; 21(17): 5432. CrossRef
Primary perivascular epithelioid cell tumor of the liver: new case report and literature review
Hassania Ameurtesse, Laïla Chbani, Amal Bennani, Imane Toughrai, Nouhad Beggui, Imane Kamaoui, Hinde Elfatemi, Taoufik Harmouch, Afaf Amarti
Diagnostic Pathology.2014;[Epub] CrossRef
Hepatic perivascular epithelioid cell tumor (PEComa): dynamic CT, MRI, ultrasonography, and pathologic features—analysis of 7 cases and review of the literature
Yan Tan, En-hua Xiao
Abdominal Radiology.2012; 37(5): 781. CrossRef

Epithelioid Hemangioendothelioma of Liver: A case report.: Yoo Jin Kim, Jae Hwa Lee, Bang Hur, Man Ha Hur; Korean J Pathol. 1995;29(3):378-384.

1,438 View
17 Download

Abstract PDF: Epithelioid hemangioendothelioma of liver is a very rare tumor of vascular origin, the most peculiar feature of which is that it is composed of endothelial cells closely resembling epithelial cells. We present a primary epithelioid hemangioendothelioma of liver in a 40-year-old male. This tumor was composed of an ill-defined yellowish white, 7 x 4cm sized, firm, solid mass and small satellite nodules in the right lobe of liver. Microscopically, two types of tumor cells-dendritic and epithelioid-were identified. The neoplastic cells infiltrated into sinusoids and intrahepatic veins. The background of tumor showed marked sclerotic change and focal proliferation of bile ductules. Confirmation of the endothelial origin of these cells was provided by positive immunoperoxidase staining for factor VIII-related antigen, and by electron mi-croscopic demonstration of Weibel-Palade body. This is the first case of epithelioid heman- gioendothelioma of liver documented in Korea. We report this case in view of its scarcity and distinctive morphologic features that allow differentiation from sclerosing carcinoma and angiosarcoma.

Original Articles

Immunohistochemical Investigation on Expression of Hepatitis B Surface Antigen, Transforming Growth Factor-alpha, and Proliferating Cell Nuclear Antigen in Hepatocellular Carcinoma.: Bang Hur, Man Ha Hur; Korean J Pathol. 1995;29(4):478-491.

1,423 View
13 Download

Abstract PDF: In an attempt to evaluate the expression of hepatitis B surface antigen(HBs Ag), transforming growth factor-ct(TGF-alpha), and proliferating cell nuclear antigen(PCNA) in hepatocellular carcinoma(HCC), an immunohistochemical investigation(ABC method) was performed using 31 surgically resected HCCS. The authors examined the expression rate and patterns, histopathologic correlation, and inter-relationships among these expressions. The results were summarized as follows. 1) Among 25 seropositive HCCS, 15 cases showed tissue expression of HBs Ag(60.0%), being expressed as a predominantly cytoplasmic pattern. Its expression rate in low grade HCC was significantly high(76.9%), in contrast to a low rate in high grade HCC(41.7%)(P<0.05). Adjacent nonenoplatic tissue showed a higher expression rate(82.6%). 2) TGF-alpha was expressed in 23 of 31 cases of HCC(74.3%). The intensity and extent of its expression did not correlate tyros with histopathologic features. Bile duct epithelium, juxtaposed and/or entrapped liver cells, and cirrhotic nodules were variably expressed, of which intense peripheral reaction within the nodules was frequently noted. 3) PCNA was expressed throughout the neoplastic tissue of HCC. Its index was significantly high(34.4 13.6), being compared to low index index(3.5 2. 1) in the nonneoplastic tissue(P<0.005). High grade tumors revealed a higher index than the low grade tumors(P<0.05). Conclusively, this data confirms that PCNA index offers useful information about cell proliferation associated with histologic degrees of malignancy of HCC, albeit TGF-alpha is also involved in cellular proliferation of both liver cell and bile duct epithelium. Changes in incidence and cellular localization of HBs Ag expression between the neoplastic and nonneoplastic tissues suggest that an integrated viral genome could be functionally altered during hepatocarcinogenesis. A significant inter-relationship among these expressions was not observed.

Expression of ICAM-1 on Short-Term Cultured Human Keratinocytes: Modulation by IFN-gamma, UVB and retinoic acid.: Bang Hur, Duck Ha Kim, Man Ha Hur; Korean J Pathol. 1995;29(6):746-755.

1,344 View
11 Download

Abstract PDF: Intercellular adhesion molecule I(ICAM-1; CD 54), a 90 kD glycoprotein, counter-receptor for lymphocyte function-associated antigen-I(LFA-1) on T-cells, is critically important to a wide variety of adhesion-dependent leukocyte functions, including antigen presentation and target cell lysis. Induction of ICAM-1 on the keratinocytes(KCs) is an important regulator in initiation, maintenance, and resolution of cutaneous inflammation, which is modulated with cytokines produced by activated T-lymphocytes. This study was designed to further our understanding on modulation effects of ultraviolet B(UVB), gamma interferon(IFN-;v), and retinoic acid(all trans) upon expression of ICAM-1 on cultured human KCs, with emphasis on their correlation. Cell surface expression of ICAM-1 in cultured human KCs was analyzed with the use of indirect immunofluorescence and fluorescence activating cell sorting(FACS) by flow cytometry. The results of this study were as follows: 1) Expression of ICAM-1 was significantly induced with IFN-,-(20 U/ml)(p<0.005). 2) UVB irradiation of 30mJ/cm2 significantly suppressed ICAM-1 expression of KCs 24 hours after irradiation(p<0.05). However, at 72 hours after irradiation, ICAM-1 expression of KCs was considerably increased in comparison to that of initial phase (24 hours after irradiation). 3) High concentrations(10(-5)M) of retinoic acid reduced UVB-induced expression of ICAM-1 in late phase(72 hours after irradiation), although retinoic acid showed induction effect of ICAM- I expression of KCs. In summary, these results indicate that ICAM- I may contribute to the biphasic effect of UVB on delayed hypersensitivity in vivo. Also, retinoic acid, a vitamin A derivative, may have a cutaneous photoprotective effect through a regulation of UVB-induced ICAM-1 expression on the KCs.

Case Reports

Clinical Pathology, Catholic University Medical CollegeSynovial Sarcoma Manifested as a Subcutaneous Nodule of Lip: A case report.: Jae Hwa Lee, Young Ok Kim, Bang Hur, Man Ha Hur; Korean J Pathol. 1996;30(9):868-871.

1,397 View
11 Download

Abstract PDF: Synovial sarcoma is one of the most common malignant soft tissue tumors in paraarticular regions. However, it is very rare to occur without any apparent relationship to synovial or articular structures. We report a case of synovial sarcoma manifested as a subcutaneous nodule in the upper lip. A 12-year-old boy complained of a palpable tender mass in the upper lip for several months. Under the impression of a benign soft tissue neoplasm, surgical excision was done. The mass, 1.5 cm in maximum diameter, was easily separated from surrounding tissues. Microscopically, this tumor showed a characteristic biphasic pattern of synovial sarcoma. On immunohistochemical and ultrastructural studies, the tumor cells showed evidence of epithelial differentiation. There was no evidence of joint-related, primary lesions or metastatic foci. This report describes a case of synovial sarcoma arising in very unusual location and size for histologically typical synovial sarcoma.

Carcinoid Tumor Arising in a Horseshoe Kidney: A case report.: Yoo Jin Kim, Bang Hur, Man Ha Hur; Korean J Pathol. 1996;30(12):1129-1137.

1,470 View
10 Download

Abstract PDF: Primary carcinoid tumor of the kidney is extremely rare ; only 29 previous reports have been described in the world literature, 3 cases of which were known to arise in horseshoe kidneys. Because of the scarcity of primary renal carcinoid tumor, its clinicopathologic features and prognosis are not well characterized, and its histogenesis is unknown. We present a case of primary carcinoid tumor arising in the horseshoe kidney of a 43-year-old man. The lesion is morphologically identical to those of gastrointestinal or respiratory tracts. In addition, this tumor contains clusters of intestinal epithelium with goblet cells and mature bony trabeculae. The cytoplasm of the tumor cells are immunoreactive for keratin, NSE, and synaptophysin, but are negative with Grimelius and Fontana-Masson stains. Membrane-bound cytoplasmic neurosecretory granules are observed by electron microscopic examination. This is the first case of primary renal carcinoid tumor arising in a horseshoe kidney documented in Korea. We describe the gross features, light and electron microscopic, and immunohistochemical findings of renal carcinoid and review the literature, with speculations on the possible histogenesis of this unusual neoplasm.

Epithelioid Leiomyosarcoma of Retroperitoneum: A case report.: Myeng Sun Park, Ji Young Seo, Hae Jin Jeong, Bang Hur, Man Ha Hur; Korean J Pathol. 1999;33(2):141-144.

1,711 View
10 Download

Abstract: Epithelioid smooth muscle tumor is relatively rare and potentially malignant, especially in retroperitoneum. Distinct criteria for malignancy still have not been clarified in this epithelioid variant arising in retroperitoneum. We report a deceptively benign-appearing epithelioid leiomyosarcoma in a 50-year-old female. She was admitted with abdominal discomfort and dysuria. Abdominal CT showed a well-demarcated, 10 10 cm sized, solid mass in retroperitoneum. Concomitant metastatic lesions were noted in right lung field. Surgical excision of retroperitoneal mass and right lung lobectomy were performed. The retroperitoneal mass showed yellowish-tan, well-delineated and lobulated appearance. Histologically, this tumor was composed of predominantly epithelioid, round to oval cells with distinct clear cytoplasm and slightly atypical nuclei. Mitosis was rare (0~1/50 HPF). Lung lesions were morphologically similar to that of retroperitoneum.

Original Articles

Expression of CDK 4, Connexin 32, and PCNA in N-diethylnitrosamine-Induced Lesions of Rat Liver.: Bang Hur, Hung Jun Kim; Korean J Pathol. 1999;33(5):309-318.

1,653 View
17 Download

Abstract PDF: Cellular altered foci (CAF), hyperplastic nodules (HN) including regenerating and adenomatous nodules, and hepatocellular carcinomas (HCC) were induced in Sprague-Dawley rat liver by prolonged administration of N-diethylnitrosamine (DEN, 200 ppm). Immunohistochemical expression of connexin 32 (Cx 32), cyclin-dependent kinase 4 (CDK 4), and proliferating cell nuclear antigen (PCNA) was assessed for the evaluation of preneoplastic potential of CAF. Regardless the duration of DEN administration, basophilic cell foci were the most frequently observed lesion in both CAF and cellular expanding hyperplastic nodules. Eosinophilic cell foci, however, were concomitantly increased with adenomatous nodules in later experimental groups. Cx 32 showed perimembranous spot-like expression. Its number was 7.25 2.10 per cell in normal hepatocytes. CAF and adenomatous nodules showed markedly decreased Cx 32 spots. Moreover, its reduction was more prominent in HCC. PCNA-labelled hepatocytes were scattered in the most CAF, showing no significant difference between each CAF. PCNA labelling index (LI) in adenomatous nodule and HCC was markedly increased. CDK 4 was localized in the cytoplasm and/or nucleus of hepatocytes. Eosinophilic cell foci revealed more nuclear expression of CDK 4 than other types of CAF, of which expression incidence was comparable to that of adenomatous nodule. Nuclear CDK 4 expression in HN and HCC was increased, although significant difference between regenerating nodule and adenomatous nodule was not seen. In conclusion, the incidence of CDK 4 was concomitantly increased with PCNA LI, however, reciprocally decreased with Cx 32 in accordance with the advance of DEN-induced HCC in rat. Phenotypically altered foci manifested as CAF are early valuable preneoplastic marker lesion for evaluation. In addition, basophilic cell foci can be considered a discernible marker of cellular expansion within nodules. However, eosinophilic cell foci might be an indeterminate marker for the advance of DEN-induced HCC in rat.

The Effect of Aminoguanidine and Insulin on the Development of Insulitis and the Expression of Inducible Nitric Oxide Synthase in Multiple Low Dose Streptozotocin-induced Diabetic Mice.: Hee Kyung Chang, Ji Young Suh, Young Sik Choi, Soon Young Kim, Chang Hyun Yoo, Bang Hur, Yo Han Park; Korean J Pathol. 1999;33(6):415-421.

1,720 View
12 Download

Abstract PDF: In this study the effect of insulin and aminoguanidine on the expression of iNOS and the development of insulitis in the multiple low dose streptozotocin (SZ) induced diabetic (LDSD) mice was evaluated. Eighty mice (Charles-River CD-1 mice) were divided into four groups. Group I received SZ for five days. Group II received SZ for five days and was followed by insulin treatment. Group III received SZ for five days and was followed by aminoguanidine treatment. Group IV was normal control group. The blood glucose level and body weight were measured weekly. On the 35th day, pancreat ic sections were observed to evaluate the frequency and the severity of insulitis in addition to the immunohistochemical expression of iNOS in the pancreatic islets. Blood glucose levels of group IV were significantly lower than other experimental groups on the 21st, 28th, and 35th day. The difference in blood glucose levels was not statistically significant. Incidence of the insulitis was lower in group II than in groups I and III. The severity of insulitis correlated with the increase in blood glucose level only in group II. The expression of iNOS was more pronounced in group I than in groups II and III. Aminoguanidine did not inhibit development of the insulitis but decreased expression of iNOS in the pancreatic islets. Therefore it is speculated that iNOS production is one of the factors and other pathogenetic mechanisms might be involved in the development of insulitis.

Case Reports

Balloon Cell Malignant Melanoma: A case report.: Ji Young Seo, Soon Young Kim, Jeong Hee Kang, Young Ok Kim, Bang Hur; Korean J Pathol. 1999;33(7):537-539.

1,917 View
40 Download

Abstract PDF: Balloon cell malignant melanoma (BCMM) is a rare histologic variant of malignant melanoma, which is composed either predominantly or entirely of large clear or foamy cells. The incidence of balloon cell malignant melanoma is about 0.15% of all cutaneous malignant melanomas. Recently, we experienced a case of cutaneous balloon cell malignant melanoma in the right lower abdomen with right inguinal and both axillary lymph node metastasis in a 56-year-old man. The cutaneous lesion was 4.5 3.5 cm in size, a well-demarcated black nodular mass, involving abdominal skin and subcutaneous tissue. The tumor was histologically composed of two types of tumor cells: predominant clear cell and focal, pigmented spindle cell. The nodal lesion was composed entirely of clear cells. Both clear and spindle cells showed positive reaction for S-100 protein and HMB-45 on immunohistochemistry.

Hyalinized Hemangioma of the Liver: A case report.: Young Ok Kim, Dong Hoon Sin, Chung Han Lee, Bang Hur; Korean J Pathol. 2000;34(2):160-163.

1,819 View
32 Download

Abstract PDF: We report a case of 50-year-old man with hyalinized hemangioma of the liver. This tumor was detected incidentally during surgical operation for gall stone and was preoperatively diagnosed as intrahepatic stone. A 2.5 2 cm sized gray to white hard mass was found in the left lobe of the liver. Histologically, the tumor was composed of dense collagenous tissue with marked hyalinization, calcification, and ossification admixed with scattered sclerotic vessels. Abundunt elastic fibers were noted in the hyalinized tissue. Totally hyalinized hemangioma is very uncommon and could be erroneously diagnosed as a malignant tumor by preoperative radiologic examination.

Original Articles

Expressions of MAGE-3, PCNA, p21, and p53 Proteins in the Hypopharyngeal Squamous Cell Carcinoma Cell Line (PNUH-12) Analysed by Bivariate Flow Cytometry.: Hee Kyung Chang, Deok Jun Kim, Hwan Jung Roh, Bang Hur, Kang Dae Lee, Spagnoli Spagnoli; Korean J Pathol. 2000;34(11):901-908.

1,523 View
13 Download

Abstract PDF: MAGE (melanoma antigen gene) is a tumor specific shared antigen, presented by HLA class I molecules, which is recognized by cytotoxic T lymphocytes. MAGE proteins are expressed in malignant tumor cells, in contrast to no expression in normal or benign tissues except for testis and placenta. MAGE might be a potential target for immunotherapy of malignant tumors. However, its biological aspects associated with cell cycle are not yet described. The flow cytometry is a useful tool for objective and quantitative analyses of heterogenous tumor cell population. To understand the status of MAGE related to cell cycle and its relationship with p53 as the G1 checkpoint regulator, p21, and PCNA as a proliferative index, we investigated expression of MAGE-3 protein, mutant p53, p21, and PCNA by flow cytometry and immunohistochemical stain. In addition, double stains for MAGE-3/p53, p53/PCNA, and p53/p21 were analysed with bivariate flow cytometry. DNA histograms using MAGE-3/PI (DNA) and p53/PI (DNA) were also analysed. The cell line (PNUH- 12) used for this study originated from a hypopharyngeal squamous cell carcinoma, which has point mutation (exon 7, C-->G) of p53. The expression rate of MAGE-3 was 83%, PCNA 85%, and p53 81%. No expression for p21 was identified. MAGE-3 was expressed in cytoplasm, while both PCNA and p53 were expressed in nuclei of tumor cells. With bivariate analyses, coexpression rates of MAGE-3/p53 and p53/PCNA were 0.96 and 0.97, respectively. Both MAGE-3 and p53 showed constantly high level throughout the cell cycle. These results suggest that expression of MAGE-3 and mutant p53 is not dependent on the cell cycle. p21 seems to be inactivated.

Expression of c-fos, p53, Transforming Growth Factor-beta1 and Glial Fibrillary Acidic Protein in Hippocampus Following Transient Forebrain Ischemia in Mongolian Gerbil.: Jae Hwa Lee, Bang Hur; Korean J Pathol. 2001;35(1):60-70.

1,464 View
15 Download

Abstract PDF: BACKGROUND
Recent studies have shown that delayed neuronal death is closely associated with early gene (c-fos or c-jun)-related apoptosis in addition to hypoxia-induced energy deficiency in the hippocampus.
METHODS
To elucidate the role of c-fos, p53, TGF-1 and glial fibrillary acidic protein (GFAP) and their interactions, cellular expression with immunohistochemistry was examined during the time period of 10-minute hypoxia with variable reperfusion intervals in the mongolian gerbil hippocampus.
RESULTS
Hippocampal CA1 shows progressive and delayed neuronal damage beginning from the 24-hour reperfusion, while CA2-3 reveals non-progressive, eosinophilic inclusion body within the neuron throughout the time period. CA1 neurons show short-term expressions of c-fos prior to significant cellular damage. However, CA2-3 neurons show persistent expressions by 3-day reperfusion. In both CA1 and CA2-3, p53 is expressed for the short-term period of the early time points. However, its intensity and duration are much less in CA2-3 than in CA1. While TGF-1 is transiently expressed at 24-hour reperfusion in CA1, its expression in CA2-3 is persistent in late time points. Early expression of GFAP is observed in the pyramidal layer of CA1 prior to neuronal damage and progressively increased in the late time points.
CONCLUSION
These results suggest that c-fos and TGF-1 may play a role in neuronal viability in the early- and late time points. Astrocytes may also be responsible for the active protective mechanism to neuronal death, as well as reactive gliosis. The hypoxia-induced neuronal damage is, in part, a p53-dependent process in the CA1 neurons.

Microvessel Density and Expressions of bcl-2, p53, and Vascular Endothelial Growth Factor in Endometrial Carcinoma.: Soon Young Kim, Hae Jin Jeong, Myeng Sun Park, Bang Hur; Korean J Pathol. 2001;35(5):401-407.

1,467 View
13 Download

Abstract PDF: BACKGROUND
Recent studies have shown that oncogenes and tumor suppressor genes are involved in tumorigenesis and tumor progression. The inverse role of bcl-2 and p53 in endometrial carcinomas has been debated. Moreover, their roles in angiogenesis as well as the interrelationship between prognostic clinico-pathological factors and angiogenesis have not been elucidated in endometrial carcinomas.
METHODS
The expression rates of bcl-2, p53 and vascular endothelial growth factor (VEGF) in thirty-eight cases of surgically removed endometrial carcinomas were investigated using an avidin-biotin complex method of immunohistochemistry. CD34 immunostain for microvessel density (MVD) was also performed.
RESULTS
The expression rate of bcl-2 was higher in the endometrioid type carcinoma (43.8%) than in the non-endometriod type carcinoma (16.7%). There was a significantly increased bcl-2 expression in grade I compared to grades II and III (P<0.05). The p53 expression rate was significantly higher in the non-endometriod type carcinoma than in the endometrioid type carcinoma (P<0.05).The VEGF expression rate was higher in the non-endometriod type carcinoma (83.3%) than in the endometrioid carcinoma (28.1%). Differences of MVD according to stages, histological types, grades and bcl-2, p53 and VEGF expressions were not noted.
CONCLUSIONS
The expression rate of bcl-2 increases in the low grade endometrial carcinoma more than in the high grade one, so it may be suggested that bcl-2 expression could be used for an ancillary prognosticator. However, p53 and VEGF expressions and microvessel density may not have any prognostic value.

First
Prev
Page of 2
Next
Last

Search