Expression of MDM2 mRNA, MDM2, P53 and P16 Proteins in Urothelial Lesions in the View of the WHO 4th Edition Guidelines as A Molecular Insight towards Personalized Medicine

Authors

  • Olfat Hammam Department of Pathology, Theodor Bilharz Research Institute (TBRI), Imbaba, Giza
  • Mona Magdy Department of Pathology, Theodor Bilharz Research Institute (TBRI), Imbaba, Giza
  • Mohamed Badawy Department of Urology, Theodor Bilharz Research Institute (TBRI), Imbaba, Giza
  • Khalid Al Osili Department of Urology, Theodor Bilharz Research Institute (TBRI), Imbaba, Giza
  • Amr El Kholy Department of Urology, Theodor Bilharz Research Institute (TBRI), Imbaba, Giza
  • Tarek El LeitHy Department of Urology, Theodor Bilharz Research Institute (TBRI), Imbaba, Giza

DOI:

https://doi.org/10.3889/oamjms.2017.100

Keywords:

P53, MDM2mRNA, P16, urothelial, grade, bilharzia

Abstract

AIM: Here we imposed a multimarker molecular panel composed of P53, MDM2 protein & mRNA & P16 with the identification of sensitive and specific cut offs among the Egyptian urothelial carcinomas bilharzial or not emphasize the pathological and molecular classifications, pathways and prognosis as a privilege for adjuvant therapy.

METHODS: Three hundred and ten urothelial lesions were pathologically evaluated and grouped as follows: 50 chronic cystitis as benign, 240 urothelial carcinomas and 20 normal bladder tissue as a control. Immunohistochemistry for MDM Protein, P16 & p53 and In Situ Hybridization for MDM2mRNA were done.

RESULTS: MDM2mRNA overexpression correlated with low grade low stage non invasive tumors, while P53 > 40% & p16 < 10% cut offs correlated with high grade high stage invasive carcinomas & bilharzial tumors (P=0.000).

CONCLUSION: MDM2mRNA overexpression vs. P53 > 40% & P16 < 10% constitutes a multimarker molecular panel with significant cut offs, proved to distinguish low grade, low stage non invasive urothelial carcinomas (MDM2mRNA overexpression, P53 < 40%, P16 > 10%) from high grade, high stage invasive urothelial carcinomas (with p53 > 40, p16 < 10% & absent MDM2mRNA overexpression). Combined P53 > 40 & p16 < 10%, together with the histopathological features can distinguish in situ urothelial lesions from dysplastic and atypical lesions.

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Published

2017-08-05

How to Cite

1.
Hammam O, Magdy M, Badawy M, Al Osili K, El Kholy A, El LeitHy T. Expression of MDM2 mRNA, MDM2, P53 and P16 Proteins in Urothelial Lesions in the View of the WHO 4th Edition Guidelines as A Molecular Insight towards Personalized Medicine. Open Access Maced J Med Sci [Internet]. 2017 Aug. 5 [cited 2024 Mar. 29];5(5):578-86. Available from: https://oamjms.eu/index.php/mjms/article/view/oamjms.2017.100

Issue

Section

A - Basic Science

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