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NDPase and TPPase activities were detected by histchemical techniques in the hypothalamus of rat, cat and man. Both enzymatic activities were exhibited by neurons and glial cells, the latter hydrolyzing NDP more actively than TPP. Enzyme hydrolysis of NDP and TPP was activated by imidazole and inhibited by noradrenaline, L-DOPA, L-cysteine and KF. The(More)
The presence of mutations in the KRAS gene is a predictor of a poor clinical response to EGFR-targeted agents in patients affected by colorectal cancer (CRC), but its significance as a global prognostic factor remains unclear. The aim of the present study was to evaluate the impact of the KRAS mutational status on time to first metastasis (TTM) and overall(More)
PURPOSE Pathological complete response (pCR) to primary chemotherapy is the main determinant for improved disease-free survival (DFS) and overall survival (OS). The primary endpoints of our study were the long-term DFS and OS rates in homogeneously treated stage IIIB breast cancer patients who failed to achieve a pCR (<pCR), in relation to residual tumor(More)
Consumption of diphosphate nucleosides is investigated by histochemical methods in rat and cat nervous system. Results show NDP-ase is effectively in histological sections from animals previously perfused with glutaraldehyde or formaldehyde. Histochemical reaction is increased in presence of Ca++, Mg++, Mn++ or imidazole and inhibited by L-DOPA and(More)
Soft tissue sarcomas constitute a heterogeneous group of tumors of mesenchymal origin: at present, more than 50 separate histological subtypes of soft tissue sarcoma have been listed. Although there have been advances in the understanding of these tumors and their treatment over the past few years, there is still a lack of consensus on the standard of care,(More)
Activation of oncogenes downstream the EGFR gene contributes to colorectal tumorigenesis and determines the sensitivity to anti-EGFR treatments. The aim of this study was to evaluate the prognostic value of KRAS, BRAF, NRAS and PIK3CA mutations in a large collection of CRC patients from genetically-homogeneous Sardinian population. A total of 1284 Sardinian(More)