Strona 1 od 201 wyniki
BACKGROUND
Angiogenesis plays an important role in the growth and metastasis of solid tumors. Several angiogenic factors have been identified, and thymidine phosphorylase (TP) is thought to be one such factor. To date, little information is available on the relationship between TP and other
Contrary findings exist according to the prognostic and predictive impact of thymidine phosphorylase (TP) expression in breast cancer. Goal of our study was to investigate TP expression on the mRNA level by microarray analysis in a large cohort of 1781 breast cancers and to analyse its prognostic
OBJECTIVE
Thymidine phosphorylase (TP) induction by docetaxel is a proposed mechanism for the observed preclinical synergy of docetaxel and capecitabine (DC). We evaluated whether TP protein expression is increased by docetaxel and correlates with pathologic complete response (pCR) in breast cancer
Thymidine phosphorylase (TP) is an angiogenic enzyme, catalysing the reversible phosphorylation of thymidine to thymine and 2-deoxyribose. TP is up-regulated in neoplasia, being associated with advanced tumour stage, microvessel density and prognosis in several tumour types. Although TP is a
Purpose: The thymidine phosphorylase (TP) is a key enzyme involved in the metabolism of pyrimidines. Inhibition or downregulation of this enzyme causes accumulation of metabolites with consequences in DNA replication. TP regulates angiogenesis and chemotactic activity of endothelial cells.
BACKGROUND
A synergistic cytotoxic effect has been hypothesized for taxanes and capecitabine, a prodrug of 5-fluorouracil. Based on preclinical studies, this synergism has been attributed to an up-regulation of the enzyme thymidine phosphorylase (TP). Beside tumour tissue, TP is highly expressed in
We report that hypoxia regulates and influences the level of the angiogenic enzyme platelet-derived endothelial cell growth factor (PD-ECGF), also called thymidine phosphorylase, in vitro and in vivo. Levels of PD-ECGF protein increased 6-fold in the breast cancer cell line MDA 231 after 16 h of
OBJECTIVE
To investigate the relationships among the expression of thymidylate synthase (TS), thymidine phosphorylase (TP), and dihydropyrimidine dehydrogenase (DPD) and the prognosis of breast cancer.
METHODS
Immunochemistry (ABC method) was used to detect the expression of TS, TP, and DPD in the
Experimental and clinical studies have shown that human breast cancer is an angiogenesis-dependent neoplasm. In fact, several authors have demonstrated that the determination in primary tumors of the degree of vascularization (microvessel counts) as well as of some angiogenic peptides is of
BACKGROUND
Thymidine phosphorylase (TP) has diverse functions within cells, including increasing the sensitivity of cancer cells to cytotoxic drugs including 5-fluorouracil (5-FU) and methotrexate. However, the regulators of TP still remains largely unknown.
METHODS
In this study, we examined
Thymidine phosphorylase (TP) expression has been found to be elevated in various solid tumors where it is likely involved in mechanisms that regulate cell proliferation, apoptosis, and angiogenesis. Based on these properties, it is tempting to hypothesize a potential prognostic role of TP,
We have investigated the expression of platelet-derived endothelial-cell growth factor/thymidine phosphorylase (PD-ECGF/dThdPase) in human breast-cancer tissues by the immunocytochemical method using anti-PD-ECGF/dThdPase monoclonal antibody. Out of 100 invasive-ductal-carcinoma tissue samples, 39
Capecitabine monotherapy was administered for 25 patients with advanced or recurrent breast cancer, and the clinical therapeutic efficacy and its relationship to expression of 5-fluorouracil-related enzymes (i. e., thymidine phosphorylase (TP), thymidylate synthase (TS) and dihydropyrimidine
OBJECTIVE
To study the expression of thymidine phosphorylase (TP), thymidylate synthase (TS) and dihydropyrimidine dehydrogenase (DPD) mRNA in breast cancer and its correlation with prognosis.
METHODS
Expression levels of TP, TS and DPD mRNA in 86 micro-selected breast cancer tissues and 9 normal
Several enzymes are closely related with the mechanism of action of fluoropyrimidine (FP). Dihydropyrimidine dehydrogenase (DPD) which catalyzes 5-fluorouracil (5-FU), thymidine phosphorylase (TP), responsible for catalyzing doxifluridine to 5-FU, and thymidylate synthase (TS) were estimated for