Background and Objective: Nasal polyp is the most common benign mass of the nasal cavity and it is originated from nasal cavity or sinuses. Cytokeratins (CK) are intermediate filament proteins that provide mechanical support in epithelial cells. The purpose of this study was to compare the expression of cytokeratin 7 in epithelium of nasal polyps and nasal mucosa in chronic rhinosinusitis. Mate...

BACKGROUND Early detection of haematogenous dissemination of epithelial tumours afforded by the analysis of epithelial antigen expression in the peripheral blood mononuclear fraction (PBMN) and bone marrow may confer a worse prognosis to patients with carcinoma. Cytokeratin 19 is a protein normally expressed by epithelial cells including normal and malignant mammary cells. Previous studies have...

The pathologic distinction of atypical fibroxanthomas (AFXs) from cutaneous spindle cell/sarcomatoid squamous cell carcinomas (SCSCCs) may occasionally pose a significant diagnostic challenge, given the substantial clinicopathologic overlap between these lesions. Recent studies indicate that p63 and CD10 are expressed in significant proportions of SCSCC and AFX, respectively. The purpose of thi...

Background: We used transcatheter arterial infusion chemotherapy (TAI) for patients with T1G3 and greater than T2 bladder cancer, which was diagnosed after extensive and deep transurethral resection of bladder tumor (TUR-BT), and we investigated the utility of serum cytokeratin 19 fragment (CYFRA) as a predictive factor of the response to therapy. Material and Methods: From November 2001 to Nov...

Bullous congenital ichthyosiform erythroderma (BCIE) is a dominantly inherited blistering skin disorder caused by point mutations in the suprabasal cytokeratins 1 or 10. Targeting the murine cytokeratin 10 gene in ES cells resulted in mice with different phenotypes in the homozygotes and heterozygotes; both of which exhibit similarities to specific clinical characteristics of BCIE. Homozygotes ...

Perivascular epithelioid cell neoplasm/tumor (PEComa) was a relatively uncommon lesion of mesenchymal origin characterized by perivascular epithelioid cells with distinctive histological and immunohistochemical features. The occurrence in the sacral ligament was exceptional rare. Cytokeratin and epithelial membrane antigen (EMA) were considered as commonly useful epithelial markers to distingui...

We investigate the equation (ut + (f(u))x)x = f (u)(ux)/2 where f(u) is a given smooth function. Typically f(u) = u/2 or u/3. This equation models unidirectional and weakly nonlinear waves for the variational wave equation utt − c(u)(c(u)ux)x = 0 which models some liquid crystals with a natural sinusoidal c. The equation itself is also the Euler-Lagrange equation of a variational problem. Two n...

Epithelial cells of the plexus choroideus form the structural basis of the blood-cerebrospinal fluid barrier (BCSFB). In vitro models of the BCSFB presenting characteristics of a functional barrier are of significant scientific interest as tools for examination of BCSFB function. Due to a lack of suitable cell lines as in vitro models, primary porcine plexus epithelial cells were subjected to a...

A 17-year-old spayed female Japanese domestic cat presented with a solitary cutaneous mass in the right thoracic area. Histopathologically, the mass consisted mainly of round tumor cells that had infiltrated throughout the dermis and deep subcutaneous tissue. The proliferating pattern of tumor cells was solid but also trabecular or cord-like in some areas, and lined with small cells resembling ...