جستجوی مقالات مرتبط با کلیدواژه "cytokeratin 20" در نشریات گروه "پزشکی"

The progression and recurrence of urothelial carcinoma (UC) are correlated with carcinoma in situ and urothelial dysplasia. It is frequently challenging to distinguish dysplasia and carcinoma in situ from reactive atypia only based on histological characteristics. In daily practices, 2 of the adjunct immunohistochemistry markers (cytokeratin 20 (CK20) and p53) are used in addition to the histology to diagnose carcinoma in situ. This is accomplished by combining histological research results with immunohistochemistry. This systematic review summarizes the current findings on the diagnostic significance of p53 and CK20 as adjunct markers to urine cytology in the detection of UC. A systematic search of the relevant literature was conducted using PubMed, Wiley Online Library, and ScienceDirect databases. After screening for the eligibility criteria, a total of 14 selected articles were reviewed. Data extraction included a total number of samples, specimen samples, type of cells, and outcome parameters (mainly sensitivity and specificity). Urine cytology alone had a sensitivity of 75%-85% and specificity of 66%-95%. CK20 with urine cytology staining showed improved sensitivity and specificity in the range of 77%-94% and 71%-100%, respectively; p53 immunostaining with urine cytology showed a sensitivity of 52%-86% and specificity of 80%-98%. The dual staining in combination with urine cytology showed comparatively higher sensitivity and specificity in the range of 70%-90% and 74%-100%, respectively. This was more evident for high-grade UC (HGUC). Overall, single or dual staining combined with urine cytology was effective in this detection and can be applied as an adjunct marker in urine cytology.

Over-expression of CD117 and cytokeratin 20 (CK20) is seen in many malignancies. Given that few studies have been conducted regarding the role of these biomarkers in the etiology of bladder tumours, this study aimed to evaluate the prognostic value of CD117 and CK 20 biomarkers in the benign and malignant tumours of urinary bladder carcinoma.

This case-control study was conducted on 62 bladder tumours (17 benign tumours and 45 malignant tumours). The immunohistochemistry technique was used to assess CK20 and CD117 biomarkers in tumour samples.

There is no significant difference between benign and malignant groups in terms of CD117 (p=0.094). No significant difference was observed between expression of CD117 in terms of grade (p=0.184). However, a significant difference was observed between benign and malignant groups in terms of CK20 expression (p=0.022). Moreover, a significant difference was observed between CK20 expression in terms of grade (p=0.009). In addition, a significant difference was observed between the age of patients considering grade (p<0.047).

The results of the current study supported the role of CK20 in the carcinogenesis of urinary bladder carcinoma. Moreover, it seems that CK20 expression may be considered as a poor prognostic parameter in transitional bladder carcinoma. Furthermore, these findings indicated that patients with higher age had higher grade. In addition, assessment of CD117 expression did not play a main role in tumour progression. Therefore, it is not recommended for bladder tumours.