Role of Micronuclesus in Cervical Intraepithelial Lesions and Carcinoma
Keywords:
Micronuclei, MN-score, cervical cancer, precancerous lesionsAbstract
Background: Micronuclei (MN) are considered sensitive indicators of chromosomal damage. Studies have emphasized the utility of MN-scoring in detection of increased risk of various cancers in humans. More recent studies have shown MN assay to be highly promising in cervical cancer screening.
Aims: To evaluate the utility of micronuclei in distinguishing various squamous intraepithelial lesions and invasive squamous cell carcinoma of cervix.
Methods: In this descriptive study, a total of 100 cases were studied, of which 50 were normal (control), 10 were high grade squamous intra epithelial lesions (HSIL) and 26 were invasive squamous cell carcinomas (SCC). Remaining 14 cases were equivocal entities comprising 3 ASCUS and 11 ASC-H cases. In each case, MN-count was done per 1000 epithelial cells and a consensus MN-score was taken after a consensus and careful review by 4 cytopathologists.
Results: The mean MN-score showed a gradual increase from normal smear to invasive SCC cases. MN-score of HSIL and invasive SCC were significantly higher than the normal and ASC-H smears. Cases with premalignant/ malignant outcome had a significantly high MN-score as compared to cases with reactive outcome.
Conclusion: MN-scoring is a simple, non invasive and cost effective test, which can be performed on an easily collected exfoliated cell sample. MN-assay in conjunction with conventional Pap test can be an effective tool for screening cervical cancer and identifying women at risk.
Â
DOI:Â 10.21276/APALM.1354
References
2. Delfino V, Casartelli G, Garzoglio B, Scala M, Mereu P, Bonatti S, et al. Micronuclei and p53 accumulation in preneoplastic and malignant lesions of the head and neck. Mutagenesis. 2002;17(1):73–7.
3. Karaman A, Binici DN, Kabalar ME, Calikuşu Z. Micronucleus analysis in patients with colorectal adenocarcinoma and colorectal polyps. World J Gastroenterol WJG. 2008 ;14(44):6835–9.
4. Aires GMA, Meireles JRC, Oliveira PC, Oliveira JL, Araújo EL, Pires BC, et al. Micronuclei as biomarkers for evaluating the risk of malignant transformation in the uterine cervix. Genet Mol Res GMR. 2011;10(3):1558–64.
5. Arora SK, Dey P, Saikia UN. Micronucleus in atypical urothelial cells. Diagn Cytopathol. 2010;38(11):811–3.
6. Fenech M, Holland N, Chang WP, Zeiger E, Bonassi S. The HUman MicroNucleus Project--An international collaborative study on the use of the micronucleus technique for measuring DNA damage in humans. Mutat Res. 1999;428(1-2):271–83.
7. Solomon D. The Bethesda system for reporting cervical cytology: definitions, criteria, and explanatory notes. New York: Springer; 2004.pp?
8. Manos MM, Kinney WK, Hurley LB, Sherman ME, Shieh-Ngai J, Kurman RJ, et al. Identifying women with cervical neoplasia: using human papillomavirus DNA testing for equivocal Papanicolaou results. JAMA J Am Med Assoc. 1999;281(17):1605–10.
9. Solomon D, Davey D, Kurman R, Moriarty A, O’Connor D, Prey M, et al. The 2001 Bethesda System: terminology for reporting results of cervical cytology. JAMA J Am Med Assoc. 2002;287(16):2114–9.
10. Saxena U, Sauvaget C, Sankaranarayanan R. Evidence-based screening, early diagnosis and treatment strategy of cervical cancer for national policy in low- resource countries: example of India. Asian Pac J Cancer Prev APJCP. 2012;13(4):1699–703.
11. Leyden WA, Manos MM, Geiger AM, Weinmann S, Mouchawar J, Bischoff K, et al. Cervical cancer in women with comprehensive health care access: attributable factors in the screening process. J Natl Cancer Inst. 2005;97(9):675–83.
12. Fenech M, Kirsch-Volders M, Natarajan AT, Surralles J, Crott JW, Parry J, et al. Molecular mechanisms of micronucleus, nucleoplasmic bridge and nuclear bud formation in mammalian and human cells. Mutagenesis. 2011;26(1):125–32.
13. Guzmán P, Sotelo-Regil RC, Mohar A, Gonsebatt ME. Positive correlation between the frequency of micronucleated cells and dysplasia in Papanicolaou smears. Environ Mol Mutagen. 2003;41(5):339–43.
14. Leal-Garza CH, Cerda-Flores RM, Leal-Elizondo E, Cortés-Gutiérrez EI. Micronuclei in cervical smears and peripheral blood lymphocytes from women with and without cervical uterine cancer. Mutat Res. 2002;515(1-2):57–62.
15. Guzmán P, Sotelo-Regil RC, Mohar A, Gonsebatt ME. Positive correlation between the frequency of micronucleated cells and dysplasia in Papanicolaou smears. Environ Mol Mutagen. 2003;41(5):339–43.
16. Nersesyan AK. Possible role of the micronucleus assay in diagnostics and secondary prevention of cervix cancer: a minireview. T͡Sitologii͡a Genet. 2007;41(5):64–6.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2017 Suganya Kuppovi Reddy, Surendra Kumar Verma, Sajini Elizabeth Jacob, Neelaiah Siddaraju, Dasari Papa, Suthanthira Kannan
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access at http://opcit.eprints.org/oacitation-biblio.html).