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Low-frequency vibrational excitations in zeolite ZSM-5 and its partially crystalline derivatives
(2004)
Although p27 plays a central role in cell cycle regulation, its role in breast cancer prognosis is controversial. Furthermore, the p27 gene CDKN1B carries a polymorphism with unknown functional relevance. This study was designed to evaluate p27 expression and p27 genotyping with respect to early breast cancer prognosis. 279 patients with infiltrating metastasis-free breast cancer were included in this study. p27 expression was determined in tumor tissue specimens from 261 patients by immunohistochemistry. From 108 patients, the CDKN1B genotype was examined by PCR and subsequent direct sequencing. 55.2% of the tumors were considered p27 positive. p27 expression did not correlate with any of the established parameters except for nodal involvement but significantly correlated to prolonged disease-free survival. In 35% of the tumors analyzed, the CDKN1B gene showed a polymorphism at codon 109 (V109G). The V109G polymorphism correlated with greater nodal involvement. In the node-negative subgroup, V109G correlated significantly with a shortened disease-free survival. In conclusion, the determination of the CDKN1B genotype might be a powerful tool for the prognosis of patients with early breast cancer.
Improvement of Cardiovascular Risk Markers by Pioglitazone Is Independent From Glycemic Control
(2005)
Defect evolution in thermal barrier coating systems under multi-axial thermomechanical loading
(2005)
Autoantibodies in sera from patients with autoimmune diseases have long been known and have become diagnostic tools. Analysis of their functional role again became popular with the availability of mice mutant for several genes of the complement and Fcγ receptor (FcγR) systems. Evidence from different inflammatory models suggests that both systems are interconnected in a hierarchical way. The complement system mediators such as complement component 5a (C5a) might be crucial in the communication between the complement system and FcγR-expressing cells. The split complement protein C5a is known to inactivate cells by its G-protein-coupled receptor and to be involved in the transcriptional regulation of FcγRs, thereby contributing to the complex regulation of autoimmune disease.