IMMUNOHISTOCHEMICAL EXPRESSION OF C-KIT IN ORAL SQUAMOUS CELL CARCINOMA PATIENTS IN SOUTH INDIAN POPULATIONS

Objective: The study was designed to evaluate the C-Kit expression and also to assess the relationship with various clinicopathological characteristics in oral squamous cell carcinoma (OSCC) patients.Methods: A total number of 102 formalin-fixed paraffin-embedded retrospective tissue samples were collected, in which (n =84) were histologically confirmed for OSCC, oral epithelial dysplasia (OED) (n=9), and control group (n=10) and studied immunohistochemically. The baseline characters and the correlation between the protein expression and clinicopathological parameters were analyzed. The survival analysis was performed using Kaplan-Meier Survival Method.Results: OSCC exhibited C-Kit protein expression positivity of 6% and OED with 11.11% with no expression of this protein in control patients. Overall survival analysis showed that patients with negative expression had a better survival than patients with positive expression. However, we found that expression pattern of C-kit did not correlate with various clinicopathological characteristics.Conclusion: Vast amount of study has to be still performed to under the mechanism of OSCC in C-KIT Expression to enhance the prognosis of OSCC patients in the near future

EVALUATION OF SERUM TOLL-LIKE RECEPTOR 4 AND NUCLEAR FACTOR-ΚBP65 PROTEINS IN ORAL SQUAMOUS CELL CARCINOMA

Objective: The present study is aimed to estimate the serum toll-like receptor 4 (sTLR 4) and nuclear factor-κB (NF-κB) p65 proteins in patients of oral squamous cell carcinoma (OSCC). Methods: The study was performed in prospective cases of 22 OSCC patients, 10 oral epithelial dysplasia patients, 8 control with chewing habits, and 4 control patients. The estimation of sTLR 4 and NF-κBp65 proteins was done by enzyme-linked immunosorbent assay method. The Pearson correlation test was performed to find out the relationship between these two proteins. Results: There was an increase in the sTLR 4 protein level in study groups OSCC, oral premalignant disorders, control with chewing habits, and control habits such as 1.31 ng/ml±1.06 ng/ml, 1.99 ng/ml±0.98 ng/ml, and 2.11 ng/ml±0.61 ng/ml, respectively, when comparable (p=0.008) to control patients with 0.60 ng/ml±0.24 ng/ml. However, in the case of serum level NF-κBp65 protein all the study groups including the control showed same values. The Pearson correlation test showed significant relationship (rpearson=0.91, [p<0.0005]) of these two proteins only in the OSCC patients. Conclusion: It can be concluded that serum levels of TLR 4 are increased in OSCC patients, but there was no variation seen for the NF-κBp65 protein. There is a strong interrelationship exist between the serum levels of TLR 4 and NF-κBp65 proteins in the OSCC patients only