Buccal cell micronuclei among patients with oral leukoplakia

Abstract

ABSTRACT The aim: The purpose of research was to evaluate the e ciency of micronucleus test in buccal cells for the diagnosis of oral leukoplakia. Materials and methods: We have conducted a comprehensive clinical and laboratory examination of 155 patients with oral leukoplakia. It was conducted histological examination leukoplakia mucosal sites, to assess the buccal epithelium cell micronucleus test was carried out. Results: Histological evaluation of the material was made according to the classi cation of leukoplakia WHO (2005). They are established 10 (14%) sites unmodi ed mucosa, 10 (14%) of the samples hyperkeratosis without atypia, 14 (19%) biopsies hyperkeratosis SIN1, 15 (21%) of hyperkeratosis SIN2, 10 (14%) -- SIN3 and 13 (18 %) of the cases of squamous cell carcinoma. Micronuclei, whose appearance is caused by violation of di erentiation of epithelial cells, were found in patients with leukoplakia, the detection of micronuclei almost equally high as in patients with leukoplakia SIN2, and with SIN3 (a di erence of 1.3 times (p <0,05, rxy = + 0.271)), and consequently the probability of occurrence of tumoral diseases of the oral mucosa or malignancy existing large. Conclusions: Thus, on the background of the general increase in proliferative activity of epithelial cells with increasing SIN, for each treatment group revealed the appearance of micronuclei in buccal cells. And the frequency of micronuclei and the fourth type of increases with hyperplasia, indicating an increase in the likelihood of malignancy and cancer of the oral mucosa in patients with leukoplakia SIN3. KEY WORDS: Leukoplakia, hyperplasia, epithelial cells, micronuclei, buccal epithelium