17Jul 2017

A STUDY OF EVALUATION OF AGNOR IN SALIVARY GLAND TUMORS.

  • Assistant Professor, Department of Oral Pathology & Microbiology, Government dental college and Hospital, Mumbai.
  • Dean and Professor, Department of Oral Pathology & Microbiology, Government dental college and Hospital, Nagpur.
  • Professor, Department of Oral Pathology & Microbiology, Government dental college and Hospital, Nagpur.
Crossref Cited-by Linking logo
  • Abstract
  • Keywords
  • References
  • Cite This Article as
  • Corresponding Author

Objective: The aim of this study was to evaluate the application of AgNOR in various benign and malignant salivary gland tumors by quantitative analysis of AgNOR and to determine its relation to histopathologic findings. As well as compare with normal salivary gland tissue as a control. Study design: Forty- cases of benign and malignant salivary gland tumors were retrieved and the mean AgNOR count was calculated for all cases. Results: Mean AgNOR counts were 1.72+_0.29, 2.76+_0.75, and 1.3+_ 0.86 in benign, malignant and normal salivary gland tissue respectively .Unpaired ?t? test and ANOVA test was applied to test significance. A significant difference was observed in the mean AgNOR counts among the3 groups (P < 0.001). But among benign and malignant group there was no significant difference. Conclusion:It can be suggested that the AgNOR technique can be applied on routine histological samples to assess the growth potential of salivary gland tumors. However, its prognostic value should be validated with clinical studies and survival analyses.


  1. Amit Chattopadhyay. AgNORs in Tumor Pathology:? Review of literature and observations on the technical reaction in normal oral epithelium. Ind J Dent Res vol.4; April- June: 1993.
  2. Chatterjee R,? Mukhopadhyay? ? Evaluation? of argyrophilic nucleolar? organizer regions? in? oral carcinomas in relation to human papilloma virus infection and cytokinetics.? J Oral Pathol Med vol. 26; 310-4:1970.
  3. Coleman HG, Altini M, Gronenveld HT. Nucleolar organizer regions in odontogenic cyst and ameloblastomas. J Oral Pathol Med vol. 25; 430-40:1996.
  4. Crocker J, Hall PA. A comparison of nucleolar organizer region staining and Ki-67, immunostaining in non-Hodgkins lymphoma. Histopathol vol. 12; 373?81:1988.
  5. Egan MJ, Crocker J. Nucleolar organizing regions in cutaneous tumors. J Pathol 154; 247-253:1988.
  6. Crocker J, Boldy DAR, Egan MJ. How should we count AgNORs? Proposal for a standardized approach. J Pathol 158; 185-8:1989.
  7. Carrillo R, el-Naggar AK, Luna MA, Rodriguez-Peralto JL, Batsakis JG. Nucleolar organizer regions (NORs) and myoepitheliomas: A comparison with DNA content and clinical course. J Laryngol Otol Jul 106(7); 616-20:1992.
  8. Chaudhry AP, Vickers RA, Gorlin RJ. Intraoral minor salivary gland tumors: An analysis of 1,414 cases. Oral Surg Oral Med Oral Pathol 14; 1194-1226:1961.
  9. Criscuolo M, Migaldi M, Collina G, Cesinaro AM, Galetti R, Lo Bianco F, et al. Prognostic significance of nucleolar organizer regions in recurrent pleomorphic adenomas of salivary glands. Pathologica Dec 86(6); 606-11:1994.
  10. Morgan DW, Crocker J, Watts A, Shenoc PM. Salivary gland tumors studied by means of the AgNOR technique. Histopathol 13;553-559:1988.
  11. Warnakulasuriya KAAS & Johnson NW. Nucleolar organizer region (NOR) distribution as diagnostic marker in oral keratosis, dysplasia & squamous cell carcinoma. J Oral Pathol Med vol.22; 77-81:1993.
  12. Epivatianos A, Trigonidis G. Salivary gland tumors studied by means of the AgNOR technique. Ann Dent Winter 53 (2); 21-5: 1994.
  13. Wang SZ. Quantitative study on nucleolar organizer regions in salivary gland tumors. Zhonghua Kou Qiang Yi XueZaZhi Mar 27(2); 74-6:1992.
  14. SoussanIrani, FarahnazBidariZerehpoush, and ShahramSabeti. How Useful is the AgNOR Staining Method for the Diagnosis of Salivary Gland Tumors? Avicenna J Dent Res. 2016; 8(3):e25275.
  15. Adeyemi BF, Kolude BM, Akang EE, Lawoyin JO. . A study of the utility of silver nucleolar organizer regions in categorization and prognosis of salivary gland tumors. Oral Surg Oral Med Oral Pathol Oral RadiolEndod 2006;102:513-20
  16. Fujita S, Takashashi H, Okabe H. Proliferative activity in normal salivary gland and pleomorphic adenoma. A study by argyrophilic nucleolar organizer regions (AgNOR) staining. Acta Pathol JPN Aug; 4218:513-8:1992.
  17. Matsumura K, Sasaki K. The nucleolar organizer regions associated protein (AgNORs) in salivary gland tumours. Int J Oral MaxfacSurg vol. 18; 76-78:1989.
  18. vanHeerden WFP, Raubenheimer EJ. Evaluation of nucleolar organizer region associated proteins in minor salivary gland tumors. J Oral Pathol Med 20; 291-5:1991.
  19. Freitas RA, de Araujo VC, Araujo NS. Argyrophilia in nucleolar organizers (AgNOR) in adenoid cystic carcinoma and polymorphous low-grade adenocarcinoma of the salivary glands. Eur Arch Otorhinolaryngol 250(4); 213-7:1993.
  20. Alaeddini et al.Argyrophilic proteins of nucleolar organizer regions (AgNORs)in salivary gland mucoepidermoid carcinoma and its relation to histological grade Oral Surg Oral Med Oral Pathol Oral RadiolEndod 2008;105:758-62.
  21. Fonseca I, Soares J. Adenoid cystic carcinoma: A study of nucleolar organizer regions counts and their relation to prognosis. J Pathol vol. 169; 255-58:1993.
  22. Landini G. Nucleolar organizing Regions (NORs) in pleomorphic adenomas of the salivary glands. J Oral Pathol Med 19; 257-260:1990.
  23. Pich A, Chiusa L, Navone R. Prognostic relevance of cell proliferation in head and neck tumors. Ann Oncol Sep 15(9); 1319-29:2004.

[Manisha Aba Sardar, V. K. Hazarey and S. M. Ganvir. (2017); A STUDY OF EVALUATION OF AGNOR IN SALIVARY GLAND TUMORS. Int. J. of Adv. Res. 5 (Jul). 347-359] (ISSN 2320-5407). www.journalijar.com


DR. MANISHA A. SARDAR
GOVERNMENT DENTAL COLLEGE AND HOSPITAL, MUMBAI

DOI:


Article DOI: 10.21474/IJAR01/4726      
DOI URL: http://dx.doi.org/10.21474/IJAR01/4726