| Potential of telomerase expression and activity in cervical specimens as a diagnostic tool. | |
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MedLine Citation:
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PMID: 16126869 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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AIMS: To evaluate the potential use of the immunohistochemical expression of telomerase and the measurement of its activity as diagnostic tools in the uterine cervix. METHODS: The fluorescent telomeric repeat amplification protocol (TRAP) assay was used to evaluate telomerase activity in a series of 43 cervical scrapings. Twenty five cases were cytologically classified as inflammatory, and/or metaplastic, and/or acanthotic, and 18 cases presented cell alterations compatible with mild, moderate, or severe cervical intraepithelial neoplasia (CIN). Immunohistochemistry was performed on a retrospective series of 86 archival, paraffin wax embedded blocks using a recently developed anti-hTERT (human telomerase reverse transcriptase) monoclonal antibody. RESULTS: Telomerase activity was expressed as arbitrary enzymatic units (AEU). Median values were 38.0 AEU for inflammatory non-dysplastic cell specimens, 33.5 AEU for CIN I, 41.0 AEU for CIN II, and 28.0 AEU for CIN III. The median percentage of immunoreactive dysplastic cells, as detected by immunohistochemistry, was significantly (p = 0.024) lower in CIN I (45%) than in more severe dysplastic (CIN II 70%, CIN III 80%) lesions. In contrast, no differences were seen in the enzymatic activity detected by the TRAP assay among the different dysplastic lesions. CONCLUSIONS: These data indicate that, using a molecular extra situ method, the telomerase activity of inflammatory and non-dysplastic elements masks the expected differences between mild and severe dysplasia. Conversely, an in situ approach permits the accurate identification of telomerase positive dysplastic cells. |
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Authors:
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S Bravaccini; M A Sanchini; A Amadori; L Medri; L Saragoni; D Calistri; F Monti; A Volpi; D Amadori |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of clinical pathology Volume: 58 ISSN: 0021-9746 ISO Abbreviation: J. Clin. Pathol. Publication Date: 2005 Sep |
Date Detail:
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Created Date: 2005-08-29 Completed Date: 2005-11-07 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 0376601 Medline TA: J Clin Pathol Country: England |
Other Details:
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Languages: eng Pagination: 911-4 Citation Subset: AIM; IM |
Affiliation:
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Istituto Oncologico Romagnolo, Morgagni-Pierantoni Hospital, Via Forlanini 34, 47100 Forlì, Italy. s.bravaccini@ausl.fo.it |
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| MeSH Terms | |
Descriptor/Qualifier:
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Antibodies, Monoclonal
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immunology Cervical Intraepithelial Neoplasia / diagnosis, pathology Cervix Uteri / enzymology Clinical Enzyme Tests / methods DNA-Binding Proteins / immunology, metabolism* Female Humans Neoplasm Staging Retrospective Studies Telomerase / immunology, metabolism* Tumor Markers, Biological / metabolism* Uterine Cervical Dysplasia / diagnosis, pathology Uterine Cervical Neoplasms / diagnosis*, pathology |
| Chemical | |
Reg. No./Substance:
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0/Antibodies, Monoclonal; 0/DNA-Binding Proteins; 0/Tumor Markers, Biological; EC 2.7.7.49/Telomerase |
| Comments/Corrections | |
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