\n\nMethods: BEAS-2B and primary normal human bronchial epithelial cells were stimulated
with TG beta(1) and expression of epithelial and mesenchymal markers assessed by quantitative real-time PCR, immunoblotting, immunofluorescence microscopy and zymography. In some cases the epithelial 17DMAG cells were also incubated with corticosteroids or IL-1 beta.\n\nResults were analyzed using non-parametric statistical tests. Results: Treatment of BEAS-2B or primary human bronchial epithelial cells with TGF beta(1) significantly reduced the expression level of the epithelial adherence junction protein E-cadherin. TGF beta(1) then markedly induced mesenchymal marker proteins such as collagen I, tenascin C, fibronectin and a-smooth muscle actin mRNA in a dose dependant manner. The process of mesenchymal transition was accompanied by a morphological change towards a more spindle shaped fibroblast cell type with a more motile and invasive phenotype. Corticosteroid pretreatment did not significantly alter the TGF beta(1) induced transition but IL-1 beta enhanced the transition.\n\nConclusion: Our results indicate, that TGF beta(1) can induce mesenchymal transition in the bronchial epithelial cell line and primary cells. Since asthma has been strongly associated with increased
expression of TGF beta(1) in the airway, epithelial to mesenchymal transition may contribute to the contractile and fibrotic remodeling process that accompanies chronic asthma.”
“In colorectal cancer (CRC), no biological marker is known that could serve both as a marker for detection and prognosis. this website Electron spin resonance (ESR) spectroscopy of spin-labeled fatty acid (FA) molecules Cediranib Protein Tyrosine Kinase inhibitor binding to human serum albumin is a suitable method for the detection of conformational changes and alterations of transport function of albumin through changes in its FA binding capabilities.\n\nThe aim of this study was to examine whether the FA binding to albumin is detectably and significantly
altered in CRC patients when compared with patients having benign colorectal diseases.\n\nOne hundred four patients operatively or endoscopically treated for CRC, sigmoid diverticulitis, or a colorectal adenoma were examined before procedure. Albumin was analyzed by ESR with spin-labeled FA. A determination ratio (DR) was calculated from the measured ESR spectra as ratios of the fraction of FA that is tightly bound vs. the fractions that are loosely interacting with albumin or are unbound.\n\nPatients with CRC showed significantly lower DR values (DR, -0.09 +/- 0.98 vs. 0.61 +/- 1.43) than patients with benign colorectal diseases, consistent with a change of conformation and transport function of albumin in CRC. Within the CRC group, with advanced tumor stage, the difference in DR values increased. ESR of FA binding to albumin thus seems to be suitable for detection of patients with CRC. Furthermore, a correlation with advanced tumor stage can be established.