Exmo. Sr. Diretor da Acta Pediátrica Portuguesa,Lemos com interesse o estudo de Antunes et al1. sobre infeções respiratórias virais na criança, recentemente publicado na Acta Pediátrica Portuguesa. Este trabalho levanta questões relevantes relacionadas com a fiabilidade e utilidade na prática clínica da identificação viral nas infeções respiratórias da criança.A amostra estudada envolve um significativo número ...
Nesta monografia pretende-se aprofundar o tema da utilização de infusões de plantas com acção sobre o sistema nervoso central. De acordo com a Organização Mundial de Saúde (OMS), 80% da população mundial utiliza medicamentos à base de plantas como primeira escolha em cuidados de saúde. Tem-se verificado, nas últimas décadas, um aumento da procura dos chamados “produtos naturais” em detrimento dos medicamentos s...
Resumo da dissertação: A venda de alimentos de rua designada por venda ambulante teve um crescimento exponencial um pouco por todo o mundo devido a fatores socioeconómicos, culturais e nutricionais. Contudo, apresenta aspetos negativos no que concerne à higiene e segurança alimentar. Assim, foi objetivo deste estudo analisar a qualidade microbiológica de cachorros-quentes e de hambúrgures em pão prontos a comer...
http://www.sciencedirect.com/science/article/B6SYS-4V59VTB-1/2/2a1ab641b7c1e5d4b9ca6f8c2134bdc0
Huntington's disease (HD) is caused by an expansion of cytosine2013adenine2013guanine (CAG) repeats in the huntingtin gene, which leads to neuronal loss in the striatum and cortex and to the appearance of neuronal intranuclear inclusions of mutant huntingtin. Huntingtin plays a role in protein trafficking, vesicle transport, postsynaptic signaling, transcriptional regulation, and apoptosis. Thus, a loss of func...
Huntington’s disease (HD) is a devastating neurodegenerative disorder caused by an expanded CAG repeat in the IT15 gene, which encodes for huntingtin. The disease is classically characterized by accumulation of huntingtin in neuronal intranuclear inclusions, a progressive degeneration of neurons in the striatum and the cerebral cortex, which leads to progressive motor and cognitive deterioration, and inevitably...
We investigated whether cell proliferation and neurogenesis are altered in R6/2 transgenic Huntington's disease mice. Using bromodeoxyuridine (BrdU), we found a progressive decrease in the number of proliferating cells in the dentate gyrus of R6/2 mice. This reduction was detected in pre-symptomatic mice, and by 11.5 weeks, R6/2 mice had 66% fewer newly born cells in the hippocampus. The results were confirmed ...
In this study, we investigated the involvement of reactive oxygen species (ROS) and calcium in staurosporine (STS)-induced apoptosis in cultured retinal neurons, under conditions of maintained membrane integrity. The antioxidants idebenone (IDB), glutathione-ethylester (GSH/EE), trolox, and Mn(III)tetrakis (4-benzoic acid) porphyrin chloride (MnTBAP) significantly reduced STS-induced caspase-3-like activity and...
In the present work we investigated the effect of selective stimulation of non-desensitizing 03B1-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA) receptors in the intracellular processes leading to hippocampal neuronal death and production of reactive oxygen species (ROS). Activation of AMPA receptors in the presence of cyclothiazide (CYZ), a blocker of AMPA receptor desensitization, resulted in the death...
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