- The Expression of Hypoxia Inducible Factor-1alpha and Its Correlation with the Expressions of Cyclin A1 and Cyclin B1 and the Clinicopathologic Factors of Uterine Cervical Carcinoma.
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Ju Yeon Pyo, Jae Ho Cho, Hyunki Kim, Jong Pil Park, Young Tae Kim, Nam Hoon Cho
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Korean J Pathol. 2009;43(1):13-19.
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DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.1.13
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 Abstract
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- BACKGROUND
Hypoxia inducible factor-1alpha(HIF-1alpha) is a transcription factor for various target genes that are involved in adapting cells to hypoxia. It promotes cell proliferation and survival via modulation of such cell cycle regulators such as cyclin A1 and cyclin B1 in response to hypoxia. This is associated with local failure of radiotherapy, which renders a poor prognosis for cervical carcinoma.
METHODS
Using the tissue histologic sections and a tissue microarray of the archived biopsy and surgical specimens of uterine cervical carcinoma from 57 patients who were treated with radiation therapy alone, we performed immunohistochemical staining for HIF-1alpha and cyclin A1 and B1 to evaluate the correlations between the expressions of these proteins in tumors and the clinicopathologic parameters associated with the prognosis.
RESULTS
The large tumor cell nests and invasive front margins of the tumors showed comparatively intense immunoreactivity of HIF-1alpha. There was no significant correlation between the HIF-1alpha, cyclin A1 and cyclin B1 expressions and the clinicopathologic factors.
CONCLUSIONS
The HIF-1alpha expression showed marked intra-tumoral heterogeneity. The HIF-1alpha expression is neither a powerful predictor of resistance to radiotherapy nor is it a poor prognostic marker in cervical carcinoma patients who are treated with radiotherapy. The expressions of cyclin A1 and cyclin B1 are neither independently associated with the response of radiation therapy nor are they associated with the prognostic parameters of uterine cervical carcinoma.
- Progressive Suppression of Selenium Binding Protein 1 in Gastric Adenoma and Adenocarcinoma.
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Hyunki Kim, Hyun Ju Kang, Jong Pil Park, Ju Yeon Pyo, Hoguen Kim
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Korean J Pathol. 2008;42(6):344-350.
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Abstract
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- BACKGROUND
Human selenium binding protein 1 (SELENBP1) is a protein that binds selenium as a cofactor. The decreased expression of SELENBP1 in several types of carcinomas and its association with a poor prognosis have previously been reported on. In this study, we evaluated the expression of SELENBP1 in low-grade and high-grade epithelial dysplasia/ adenomas and adenocarcinomas. METHODS: We analyzed 45 cases of low-grade epithelial dysplasia/adenomas, 42 cases of high-grade epithelial dysplasia/adenomas and 64 cases of adenocarcinomas and all of them were obtained from endoscopic mucosal resection or endoscopic submucosal dissection. We analyzed all of them for their SELENBP1 expression by immunohistochemistry. Eight triple-paired cases of gastric mucosa, adenoma and adenocarcinoma from the same patient were selected for RT-PCR analysis. RESULTS: There was a progressive decrease in the expression of SELENBP1 from the low-grade dysplasia/adenomas (42/45, 93%) to the high-grade dysplasia/adenomas (29/42, 69%) and finally to the adenocarcinomas (24/64, 37%), (p<0.001). The progressive decrease in the SELENBP1 expression was also evident in the eight paired cases that were analyzed by RT-PCR. CONCLUSIONS: Our findings demonstrate that the SELENBP1 expression is suppressed in gastric epithelial dysplasia/adenomas and adenocarcinomas. The suppression of SELENBP1 was significantly more frequent and severer in the adenocarcinomas than that in the low-grade dysplasia/ adenomas, and this implies that the suppression of SELENBP1 is a late event in gastric carcinogenesis.
- Solid Variant of Mammary Adenoid Cystic Carcinoma.
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Ji Eun Kwon, Yoon Hee Lee, Ju Yeon Pyo, Sang Kyum Kim, Byeong Woo Park, Woo Ick Yang
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Korean J Pathol. 2007;41(6):424-426.
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Abstract
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- Adenoid cystic carcinoma (ACC) is a rare type of breast carcinoma and this tumor makes up less than 0.1% of all mammary carcinomas; ACC is known to show a relatively favorable prognosis. Among a variety of microscopic growth patterns of mammary ACC, a solid variant is the rarest and this can cause diagnostic difficulties. We present here a case of a solid variant of mammary ACC that occurred in the right breast of a 40-year-old woman who was initially diagnosed with invasive ductal carcinoma. We discuss the histological and clinical characteristics of this case.
- Comparision of Effectiveness between the ThinPrep(R) and the Cytospin Preparations of the Repeated Urine Cytology.
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Soon Won Hong, Hyun Kyung Kim, Ju Yeon Pyo, Yoonhee Lee, Woo Hee Jung, Se Hoon Kim
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Korean J Cytopathol. 2007;18(1):55-61.
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Abstract
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- Once diagnosed as "cell paucity" or "atypia" by the cytospin (CS) preparation, this CS preparation does not secure a precise diagnosis by repeated testing alone. Although the ThinPrep(R) (TP) preparation is acknowledged to show increased cellularity, performing the screening tests for the cases that have enough cellularity, according to CS, raises issues for the cost-effectiveness. To obtain a more precise diagnosis through increasing the cellularity by performing TP, we selected the cases that were diagnosed as "cell paucity" or "atypia" by CS, but they required a more precise diagnosis, and the samples were processed via both CS and TP to compare the results. 11 patients diagnosed as "cell paucity" and 22 patients diagnosed as "atypia" by CS participated in this study. When the detection rate of atypical cells in both preparations with repeated urine cytology was compared, the overall detection rate of TP (16cases, 48.5%) was superior than that of CS (11cases, 33.3%), with statistical significance. The cellularity of both preparations was compared on repeated urine cytology; the general cellularity of TP (29cases, 87.9%) was higher than that of CS (20cases, 60.6%), but there was no statistical significance. Particularly, we repeated the TP for the 1 case that was diagnosed as "atypia" and we performed polyoma virus immunohistochemical staining, which confirmed polyoma virus. In conclusion, we can avoid obtaining negative diagnosis from cases with uncertain "atypia" or "cell paucity" by performing repeated TP testing.
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