- 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.
- Flow Cytometric DNA Analysis in Thyroid Neoplasms: With Emphasis on the Correlation between Ploidy Level and Pathologic Features.
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Young Tae Kim, Jin Man Kim, Kwang Sun Suh, Jin Sun Bae
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Korean J Pathol. 1995;29(2):127-135.
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Abstract
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- Nuclear DNA content in 31 cases of thyroid neoplasm was determined by flow cytometry with the use of paraffin-embedded archival tissue. DNA aneuploidy was found in 6 cases (19.4%) of the 31 thyroid neoplasms; such as 2 of 8 (DI=1.16, 1.56) follicular adenomas, 1 of 6 (DI=1.10) follicular carcinomas, 1 of 15 (DI=1.18) papillary carcinomas and 2 of 2 (DI=1.76, 2.07) medullary carcinomas.
The remaining tumors were diploid. No significant difference between follicular adenomas and carcinomas was detected with respect to the S phase fraction(SPF). In the papillary carcinoma group the SPF was higher than in the follicular neoplasm group, but it was statistically insignificant.
Regional lymph node metastasis was present in 8 of 15( 53.3%) papillary carcinomas but absent in all of the 14 follicular neoplasms. In the medullary carcinoma group one case showed regional node metastasis at the time of resection and the other developed metastasis 11 months after surgical removal of the primary lesion. In this study tumors predominantly composed of Hurthle cells were found to have a significantly higher D.I. than those with few or no Hurthle cells. No significant difference was found between tumors with metastasis and those without metastasis.
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