Gene knockdown has emerged as an important tool for cancer gene therapy as well as for viral infections and dominantly inherited genetic disorders. The generation of suitable siRNA delivery systems poses some challenges, namely, to avoid nuclease degradation, to surpass the cytoplasmic membrane, and to release the nucleic acids into the cytosol. Aiming at evaluating the ability of thermoresponsive block copolym...
Filipendula ulmaria (L.) Maxim (meadowsweet) is a popular medicinal species that can be found throughout most Europe and Asia. The plant is known for its rich antioxidants content, having compounds such as flavonoids and ascorbic acid. Therefore, the aim of this work was to investigate if the flower extracts of F. ulmaria (L.) Maxim have cell growth inhibitory activity in three human tumour cell lines represent...
A Síndrome Cerebrocostomandibular é caracterizada logo ao nascimento por unia sequência de Pierre Robin grave (micrognatia grave, fenda do palato e glossoptosis) e defeitos posteriores da grade costal, ocorrendo atraso mental em 50% dos casos que sobrevivem.A morte por complicações respiratórias ocorre em 40% dos casos antes do primeiro ano de vida. Os autores descrevem um caso de Síndrome Cerebrocostomandibula...
O síndroma de Smith-Lemli-Opitz (SLO) é uma doença genética autossómica recessiva caracterizada por múltiplas anomalias congénitas sendo as mais frequentes o atraso de crescimento e desenvolvimento, microcefalia, anomalias faciais, anomalias genitais e sindactilia e ou polidactilia associadas a outras anomalias menos frequentes. Não há nenhuma anomalia congénita patognomónica nem obrigatória para o diagnóstico ...
The release of the opioid antagonist naltrexone from neutral poly(N-isopropylacrylamide) (PNIPAAM)microgels and negatively charged PNIPAAM microgels containing acrylic acid groups (PNIPAAM-co-PAA) has been studied at various microgel and drug concentrations. The release curves were found to be well represented by the Weibull equation. The release rates were observed to be dependent on the microgel concentration...
The present work aimed at the development and application of a lipid-based nanocarrier for targeted delivery of nucleic acids to glioblastoma (GBM). For this purpose, chlorotoxin (CTX), a peptide reported to bind selectively to glioma cells while showing no affinity for non-neoplastic cells, was covalently coupled to liposomes encapsulating antisense oligonucleotides (asOs) or small interfering RNAs (siRNAs). T...
We have previously described the development of novel sterically stabilized F3-targeted pH-sensitive liposomes, which exhibited the ability to target both cancer and endothelial cells. Herein, the therapeutic potential of those liposomes was assessed upon encapsulation of a siRNA against a well-validated molecular target, PLK1. Treatment of prostate cancer (PC3) and angiogenic endothelial (HMEC-1) cells with F3...
Physical working conditions have potential effects on health, and play an important role in quality of life, and job satisfaction, yet most studies on the direct or indirect consequences of physical environmental conditions on healthcare professionals’ focus on outcomes such as performance, efficiency, and error. The objective of this study was to analyze the effects of the physical environment quality of healt...
Neste estudo abordamos o comportamento alimentar de pessoas ambivalentes em contextos sociais. Apesar das evidências de que a qualidade dos alimentos pode desempenhar um papel importante, a literatura apenas tem vindo a considerar quem são os outros com quem se partilha a refeição. Os participantes comeram gomos de maçã ou batatas fritas, numa de três condições experimentais: sozinhos, em co-ação com amigos ou ...
Neste segundo artigo, de quatro que integram a rubrica “CONCEÇÃO, REDAÇÃO E PUBLICAÇÃO DE ARTIGOS CIENTÍFICOS” da secção “EDUCAÇÃO CIENTÍFICA” da revista “NASCER E CRESCER” debruçamo-nos sobre os aspetos mais relevantes da estrutura e o conteúdo de um artigo científico para submeter a publicação. ; ABSTRACT In this second manuscript, from four that comprise the heading “DESIGN, WRITING AND PUBLISHING OF CIENTI...
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