ABSTRACT
Background Micronuclei are small, additional nuclei formed as a result of exclusion of chromosome fragments or the whole-chromosome lagging at mitosis. Micronuclei indirectly reflect the chromosomal breakage or impairment of mitotic apparatus. Micronuclei in exfoliated oral epithelial cells are widely used as biomarkers of chromosomal damage, genome instability and cancer risk in humans. Micronuclei scoring can be used as a biomarker to identify different preneoplastic conditions much earlier than manifestations of clinical features and might specifically be exploited in screening of high-risk population for a specific cancer. Aim To correlate frequency of micronuclei in oral exfoliated cells in clinically diagnosed cases of potentially malignant disorders (PMDs) and oral squamous cell carcinoma. Material and Methods The study subjects consisted of clinically and histopathologically diagnosed cases of oral squamous cell carcinoma, oral sub mucous fibrosis and leucoplakia. Healthy subjects without any tobacco consumption habits formed the control group. The cytosmear from all the four groups were stained with Papanicolaou stain. Micronuclei were identified according to the criteria given by Tolbert et al. (1992). Result The frequency of micronuclei was higher in patients with oral squamous cell carcinoma as compared to the other subject groups and the difference was found to be highly significant. Conclusion This study concluded that there is gradual increase in micronuclei counts from normal oral mucosa to PMDs to oral carcinoma.
ABSTRACT
Topical antibiotic like Calcium mupirocin and its combination with steroid Fluticasone are commonly used to treat burn wounds. But whether they influence healing of wounds is not known. Aim: To compare the effect of Calcium mupirocin and Fluticasone of Apex Laboratories Chennai, on experimentally induced burn wound healing in Wistar rats and compare with available market preparation Mupirocin and Fluticasone -mupirocin combination. Method: Partial thickness burn wound was inflicted, on Wistar rats under ketamine (50mg/kg/i.p) by pouring hot molten wax at 80◦ C into a metal cylinder of 300 mm2 circular opening placed on shaven back of the rat. Animals with partial thickness burn wounds were divided into 7 groups (n=10). Group I did not receive any drug and served as control group. Group II, III, IV, V, VI, and VII received Calcium mupirocin A, Calcium mupirocin B, Mupirocin, Fluticasone+Calcium mupirocin A combination. Fluticasone +Calcium mupirocin B combination and Fluticasone -mupirocin combination creams respectively, twice a day for 21 days or till complete healing whichever was earlier. Results: Calcium mupirocin significantly decreased the duration of epithelialization and increased % of wound contraction in comparison to the control group. This was confirmed by Histopathology studies. Conclusion: Calcium mupirocin of apex possess significant wound healing properties.