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Impact of tumour characteristic and treatment modality on the local recurrence and the survival in patients with oral squamous cell carcinoma

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Kos M., Łuczak K., Brusco D., Engelke W.
Otolaryngologia Polska
|
2008
|
vol. 62(6)
722-726
EN
Purpose of the study. To evaluate the impact of tumour location, local and regional advancement, histological differentiation, status of the surgical margins and radiotherapy on the disease-free time and overall survival rates in patients with oral squamous cell carcinoma. Material and methods. A retrospective analysis of 67 patients treated with surgery (61 pts.), radiotherapy (6 pts.) and their combination (28 pts.). Follow time on average 40 months. The probabilities of survival were assessed using the Kaplan-Meier estimates, the differences were calculated with the log-rank test. An analysis of the infl uence of the neck recurrences on the prognosis was additionally performed. Relationship between independent categorical variables as: primary local advancement, location of the tumour, histological grading and lymph node metastases was evaluated with Fisher´s Exact Test. Results. Disease-free time rate amounted to 40,1%. There was no independent prognostic importance of primary location, T-staging and N-staging, histological grading of the tumour or radiation on disease-free time, just opposite to the status of the resection margins. However, the number of neck metastases was directly proportional to the tumour dimension and poor histological differentiation. Overall survival rate amounted to 87,5%. Posterior location in the oral cavity, involvement of cervical lymph nodes, surgical margins with the presence of tumour cells, poor histological differentiation and necessity of irradiation negatively correlated with the survival. Conclusions. A complete resection of the tumour was the most important independent prognostic parameter for the disease-free and overall survivals in oral squamous cell carcinomas in this study. An adjuvant radiation therapy could improve the results of treatment of oral squamous cell carcinoma also in cases were so far considered only for surgical management.
2
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Association between clinical stage of oral cancer and expression of immunohistochemical markers

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Świątkowski W., Rahnama M., Tomaszewski T., Bigas M., Świątkowska A., Łobacz M., Wallner J.
Polish Journal of Surgery
|
2017
|
vol. 89(6)
17-22
EN
Aim: The aim of this study is to demonstrate the possible correlation between the expression of examined protein markers - p53, EGFR, PCNA, p44/42 in the mass of the tumor and the clinical stage of disease. Material: 48 patients of the Department and Clinic of Oral and Maxillofacial Surgery, Lublin diagnosed with oral cancer. The control group consisted of 10 patients diagnosed with leukoplakia lesions in the oral cavity. The methods: Immunohistochemical analysis using the detection system DAKO K5007 Cat - Dako REAL ™ Detection System, Peroxidase DAB +, Rabbit / Mouse. Results: Based upon the statistical results, significant correlation between p53 protein and tumor staging; however, a correlation between the level of expression of EGFR, p44/42, PCNA and staging was not likewise revealed. Conclusions: Looking for oral squamous cell carcinoma markers remains an actual issue. Identification of specific markers of oral cancer could be used in screening the population, determining prognosis and response to treatment.
3
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THE EFFECT OF METRONIDAZOLE ON THE VIABILITY OF CAL-27 TONGUE CANCER CELLS.

100%
Tołoczko-Iwaniuk N., Dziemiańczyk-Pakieła D., Celińska-Janowicz K., Drągowski P., Groth D., Reszeć J., Car H., Borys J., Miltyk W.
Acta Poloniae Pharmaceutica - Drug Research
|
2018
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vol. 75
|
issue 5
1233-1240
EN
Metronidazole belongs to the most commonly prescribed medications for bacterial and parasitic infections worldwide. It is also used in perioperative prevention prior to bowel, and head and neck surgeries. Despite the fact that the World Health Organization has placed it on its List of Essential Medicines, it is considered potentially carcinogenic. A great number of research studies have been conducted to clarify this issue, but results are inconclusive. None of the studies focused on the influence of metronidazole on oral cancer development. The aim of our study was to evaluate the impact of metronidazole on the viability of tongue cancer cells. The research was conducted on the tongue squamous cell carcinoma cell line (CAL-27). Metronidazole dissolved in growth medium was applied to the cell culture at concentrations: 1, 10, 50, 100μg/mL. Toxicity of the drug was evaluated by MTT assay and the [3H]-thymidine incorporation test. The MTT test revealed a significant increase in cell viability under the influence of metronidazole after 24h, at the highest concentration of the drug (100μg/mL), but had no impact on cell viability at other concentrations and after 48h and 72h. The results of the [3H]-thymidine incorporation test did not show significant results. Summarizing, metronidazole stimulates the viability of tongue squamous cell carcinoma cells according to its concentration and the time of incubation (results significant at the concentration 100μg/mL, after 24 hours of incubation).
4
Publication available in full text mode
Content available

Impact of tumour characteristic and treatment modality on the local recurrence and the survival in patients with oral squamous cell carcinoma

100%
Kos M., Łuczak K., Brusco D., Engelke W.
Polish Journal of Otolaryngology
|
2008
|
vol. 62
|
issue 6
722-726
EN
Purpose of the study. To evaluate the impact of tumour location, local and regional advancement, histological differentiation, status of the surgical margins and radiotherapy on the disease-free time and overall survival rates in patients with oral squamous cell carcinoma. Material and methods. A retrospective analysis of 67 patients treated with surgery (61 pts.), radiotherapy (6 pts.) and their combination (28 pts.). Follow time on average 40 months. The probabilities of survival were assessed using the Kaplan-Meier estimates, the differences were calculated with the log-rank test. An analysis of the infl uence of the neck recurrences on the prognosis was additionally performed. Relationship between independent categorical variables as: primary local advancement, location of the tumour, histological grading and lymph node metastases was evaluated with Fisher´s Exact Test. Results. Disease-free time rate amounted to 40,1%. There was no independent prognostic importance of primary location, T-staging and N-staging, histological grading of the tumour or radiation on disease-free time, just opposite to the status of the resection margins. However, the number of neck metastases was directly proportional to the tumour dimension and poor histological differentiation. Overall survival rate amounted to 87,5%. Posterior location in the oral cavity, involvement of cervical lymph nodes, surgical margins with the presence of tumour cells, poor histological differentiation and necessity of irradiation negatively correlated with the survival. Conclusions. A complete resection of the tumour was the most important independent prognostic parameter for the disease-free and overall survivals in oral squamous cell carcinomas in this study. An adjuvant radiation therapy could improve the results of treatment of oral squamous cell carcinoma also in cases were so far considered only for surgical management.
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