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Calcium Modulation, Anti-Oxidant and Anti-Inflammatory Effect of Skin Allergens...

Silva, Ana; Pereira, Marta; Carrascal, Mylène A.; Brites, Gonçalo; Neves, Bruno; Moreira, Patrícia; Resende, Rosa; Silva, Maria Manuel

Experimental evidence highlights nuclear factor (erythroid-derived 2)-like 2 (Nrf2) as a molecular target in Alzheimer's disease (AD). The well-known effect of electrophilic cysteine-reactive skin allergens on Nrf2-activation led to the hypothesis that these compounds could have a therapeutic role in AD. This was further supported by the neuroprotective activity of the skin allergen dimethyl fumarate (DMF), dem...


Highlights in BACE1 Inhibitors for Alzheimer's Disease Treatment

Coimbra, Judite R. M.; Marques, Daniela F. F.; Baptista, Salete J.; Pereira, Cláudia Fragão; Moreira, Paula I.; Dinis, Teresa C. P.; Santos, Armanda E.

Alzheimer's disease (AD) is a severe neurodegenerative disorder and the most common type of dementia in the elderly. The clinical symptoms of AD include a progressive loss of memory and impairment of cognitive functions interfering with daily life activities. The main neuropathological features consist in extracellular amyloid-β (Aβ) plaque deposition and intracellular Neurofibrillary tangles (NFTs) of hyperpho...


Polyphenolic characterisation and bioactivity of an Oxalis pes-caprae L. leaf e...

Gaspar, Marisa Costa; Fonseca, Diogo A.; Antunes, Manuel J.; Frigerio, Christian; Gomes, Nelson G. M.; Vieira, M.; Santos, Armanda E.; Cruz, Maria T.


In vitro ischemia triggers a transcriptional response to down-regulate synaptic...

Fernandes, Joana; Vieira, Marta; Carreto, Laura; Santos, Manuel A. S.; Duarte, Carlos B.; Carvalho, Ana Luísa; Santos, Armanda E.

Transient global cerebral ischemia induces profound changes in the transcriptome of brain cells, which is partially associated with the induction or repression of genes that influence the ischemic response. However, the mechanisms responsible for the selective vulnerability of hippocampal neurons to global ischemia remain to be clarified. To identify molecular changes elicited by ischemic insults, we subjected ...


The combination of glutamate receptor antagonist MK-801 with tamoxifen and its ...

Ribeiro, Mariana P. C.; Nunes-Correia, Isabel; Santos, Armanda E.; Custódio, José B. A.

Recent reports suggest that N-methyl-d-aspartate receptor (NMDAR) blockade by MK-801 decreases tumor growth. Thus, we investigated whether other ionotropic glutamate receptor (iGluR) antagonists were also able to modulate the proliferation of melanoma cells. On the other hand, the antiestrogen tamoxifen (TAM) decreases the proliferation of melanoma cells, and is included in combined therapies for melanoma. As t...


In vitro ischemia triggers a transcriptional response to down-regulate synaptic...

Fernandes, Joana; Vieira, Marta; Carreto, Laura; Santos, Manuel A. S.; Duarte, Carlos B.; Carvalho, Ana Luísa; Santos, Armanda E.

Transient global cerebral ischemia induces profound changes in the transcriptome of brain cells, which is partially associated with the induction or repression of genes that influence the ischemic response. However, the mechanisms responsible for the selective vulnerability of hippocampal neurons to global ischemia remain to be clarified. To identify molecular changes elicited by ischemic insults, we subjected ...


Differential postreceptor signaling events triggered by excitotoxic stimulation...

Santos, Armanda E.; Carvalho, Ana L.; Lopes, Maria C.; Carvalho, Arsélio P.

The aim of this work was to investigate whether excitotoxicity induced by overstimulation of different ionotropic glutamate receptors could trigger different intracellular signaling cascades. Cultured chick neuronal retina cells, essentially amacrine-like, were particularly sensitive to the toxicity induced by non-NMDA glutamate receptor agonists. One hour stimulation with 100 muM kainate induced a reduction of...


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