The University of Brasília (UnB) uses a diversity of chemical products, generating residues
in a significant way in its multiple activities-teaching, research and community services. The …

Não é fácil convencer um país a permanecer em casa durante semanas. Também não é
simples desconfiná-lo, mas foi esse o desafio que recebemos no início de 2021, um ano após …

Este artigo pretende desvendar e pensar novos desafios de participação, conhecimento e
intervenção associados às chamadas «metodologias de projeto», nomeadamente à …

The small GTP-binding proteins Ras and Rac1 are molecular switches exchanging GDP for
GTP and converting external signals in response to a variety of stimuli. Ras and Rac1 play …

Serum amyloid A (SAA), a classical acute-phase protein, is produced predominantly by
hepatocytes in response to injury, infection, and inflammation. It has been shown that SAA …

The main purpose of this review article is to provide a better understanding of the role of
oxidants as modulators/mediators of tyrosine phosphorylation-dependent signal transduction …

Reversible phosphorylation of protein tyrosine residues by polypeptide growth factor–receptor
protein tyrosine kinases is implicated in the control of fundamental cellular processes …

δ-Aminolevulinic acid (ALA), a heme precursor accumulated in acute intermittent porphyria
and saturnism, undergoes autoxidation leading to ammonium ion and probably the …

The aim of the present study was to determine the mechanisms involved in estrogen actions
in cultured rat Sertoli cells. RT-PCR detected transcripts for the estrogen receptors ESR1 …

This work reviews in vitro and in vivo studies carried out in our laboratories on a role for
accumulated ALA as a common potential endogenous source of deleterious oxyradicals and H; …