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Frequency of TERT promoter mutations in human cancers

Reactivation of telomerase has been implicated in human tumorigenesis, but the underlying mechanisms remain poorly understood. Here we report the presence of recurrent somatic mutations in the TERT promoter in cancers of the central nervous system (43%), bladder (59%), thyroid (follicular cell-derived, 10%) and skin (melanoma, 29%). In thyroid cancers, the presence of TERT promoter mutations (when occurring tog...

Satisfação profissional dos técnicos de radiologia no setor privado e no setor ...

A satisfação profissional é um tema atual, sendo alvo de diversas investigações, devido a este ter sido reconhecido como parte integrante nos cuidados de saúde como indicador de qualidade. De acordo com Spector (1997), a satisfação profissional pode ser explicada como medida no qual o trabalhador gosta do seu trabalho (satisfação profissional) ou não gosta do ser trabalho (insatisfação profissional). No entanto...

Acetate-induced apoptosis in colorectal carcinoma cells involves lysosomal memb...

Colorectal carcinoma (CRC) is one of the most common causes of cancer-related mortality. Short-chain fatty acids secreted by dietary propionibacteria from the intestine, such as acetate, induce apoptosis in CRC cells and may therefore be relevant in CRC prevention and therapy. We previously reported that acetic acid-induced apoptosis in Saccharomyces cerevisiae cells involves partial vacuole permeabilization an...

In vitro induction of melanin synthesis and extrusion by tamoxifen

Physical appearance has significant importance psychologically and socially, with skin and hair being of prime relevance. Effective ingredients that modulate melanin synthesis are of growing interest. Tamoxifen, a widely used selective oestrogen receptor modulator, SERM, was described occasionally in medical case reports as causing grey hair repigmentation. This work aimed to study, in vitro, the effect of tamo...

Sistema de aquisição de dados para monitorização de transportes de carga

O presente relatório é fruto do trabalho desenvolvido durante o estágio realizado no Cartif, Valladolid, Espanha, onde foi desenvolvido um sistema de aquisição de dados para monitorização de transportes de carga. O transporte de cargas, principalmente quando estas são frágeis, pode provocar a sua danificação devido às vibrações produzidas resultantes das condições da via de comunicação e da condução do veículo....

3-bromopyruvate, butyrate, monocarboxylate transporters, warburg effect

The authors are deeply grateful to Professor André Goffeau (Université Catholique de Louvain-la-Neuve, Belgium) for his contagious vision, valuable discussions at the Conference on 3-BP held in Brussels, 29 October–2 November, 2011 and critical reviewing of the manuscript. The authors also thank Dr. Rita Reis for her technical support in microscopy and image analysis. ; Most malignant tumors exhibit theWarburg...

Transcatheter arterial chemoembolization with doxorubicin eluting beads in the ...

Retrospective study to evaluate local tumor control and survival data after transcatheter arterial chemoembolization with doxorubicin eluting beads in the treatment of hepatocellular carcinoma. Between April 2007 and November 2008, a total of 47 patients (mean age 61,7 years; range 42-84 years) with hepatocellular carcinoma were treated with transcatheter arterial chemoembolization. In total 73 chemoembolizatio...

Vacuole-mitochondrial crosstalk during apoptosis induced by acetic acid in yeast

Vacuole-mitochondrial crosstalk during apoptosis in yeast: a model for understa...

The yeast apoptosis field emerged with the finding that key components of the apoptotic machinery are conserved in these simple eukaryotes. Thus it became possible to exploit these genetically tractable organisms to improve our understanding of the intricate mechanisms of cell death in higher eukaryotes and of severe human diseases associated with apoptosis dysfunctions. Early on, it was recognized that a mitoc...

What yeast can tell us about how cells commit suicide?

Multicellular organisms developed a complex system to balance cell proliferation and cell death in order to guarantee correct embryonic development and tissue homeostasis. Failure of cells to undergo programmed cell death (PCD) can potentially lead to severe diseases, including neural degeneration, autoimmunity and cancer. Identifying the molecules involved in PCD and understanding the regulation of the process...