Search results for "Forms"

Diritti di partecipazione politica e piattaforme digitali, alcune riflessioni

2022

Questo scritto affronta il tema dell’impatto dei social networks sui diritti di partecipazione politica, con riguardo al diritto all’informazione, al diritto di associarsi in partiti, al diritto di voto come esito di campagne elettorali digitali. Il mutamento della comunicazione politica e del dibattito pubblico refluisce sulla correttezza dei processi democratici; ciò pone l’esigenza della regolazione dei social networks quale spazio mediatico utilizzato dai soggetti politici (individui od organizzazioni) per influenzare la formazione dell’opinione pubblica e costruire il consenso a proprio favore, soprattutto nell’ambito delle campagne elettorali. L’articolo si sofferma, dunque, sui probl…

Democratic values in the aesthetics of classic American pragmatism

2011

Abstract In the present paper an interpretation of the political dimension of pragmatic aesthetic reflection is proposed. The interconnection between politics and aesthetics in three classic American pragmatists: William James (1842–1910), John Dewey (1859–1952), and George Herbert Mead (1863–1931) is evoked. The author claims that by emphasizing the role of democratic values in philosophy and life, the classic American pragmatists encroach upon the field of the arts and aesthetics. Their emphasis put upon individual activity, free expression of thoughts, plurality of the forms of expression, and acceptance of criticism as a tool helping create better solutions in human cooperation can easi…

Printing Biology: engineering analytical platforms by molecular inks

2021

In vitro models for the prediction of in vivo performance of oral dosage forms: Recent progress from partnership through the IMI OrBiTo collaboration

2019

The availability of in vitro tools that are constructed on the basis of a detailed knowledge of key aspects of gastrointestinal (GI) physiology and their impact on formulation performance and subsequent drug release behaviour is fundamental to the success and efficiency of oral drug product development. Over the last six years, the development and optimization of improved, biorelevant in vitro tools has been a cornerstone of the IMI OrBiTo (Oral Biopharmaceutics Tools) project. By bringing together key industry and academic partners, and by linking tool development and optimization to human studies to understand behaviour at the formulation/GI tract interface, the collaboration has enabled …

Specific processing of tenascin-C by the metalloprotease meprinβ neutralizes its inhibition of cell spreading

2009

The metalloprotease meprin has been implicated in tissue remodelling due to its capability to degrade extracellular matrix components. Here, we investigated the susceptibility of tenascin-C to cleavage by meprinbeta and the functional properties of its proteolytic fragments. A set of monoclonal antibodies against chicken and human tenascin-C allowed the mapping of proteolytic fragments generated by meprinbeta. In chicken tenascin-C, meprinbeta processed all three major splicing variants by removal of 10kDa N-terminal and 38kDa C-terminal peptides, leaving a large central part of subunits intact. A similar cleavage pattern was found for large human tenascin-C variant where two N-terminal pep…

Functional and dysfunctional conformers of human neuroserpin characterized by optical spectroscopies and Molecular Dynamics

2015

Neuroserpin (NS) is a serine protease inhibitor (SERPIN) involved in different neurological pathologies, including the Familial Encephalopathy with Neuroserpin Inclusion Bodies (FENIB), related to the aberrant polymerization of NS mutants. Here we present an in vitro and in silico characterization of native neuroserpin and its dysfunctional conformation isoforms: the proteolytically cleaved conformer, the inactive latent conformer, and the polymeric species. Based on circular dichroism and fluorescence spectroscopy, we present an experimental validation of the latent model and highlight the main structural features of the different conformers. In particular, emission spectra of aromatic res…

Red blood with blue-blood ancestry: Intriguing structure of a snail hemoglobin

2006

The phylogenetic enigma of snail hemoglobin, its isolated occurrence in a single gastropod family, the Planorbidae, and the lack of sequence data, stimulated the present study. We present here the complete cDNA and predicted amino acid sequence of two hemoglobin polypeptides from the planorbid Biomphalaria glabrata (intermediate host snail for the human parasite Schistosoma mansoni ). Both isoforms contain 13 different, cysteine-free globin domains, plus a small N-terminal nonglobin “plug” domain with three cysteines for subunit dimerization (total M r ≈ 238 kDa). We also identified the native hemoglobin molecule and present here a preliminary 3D reconstruction from electron microscopical …

The Metalloprotease Meprin β Generates Amino Terminal-truncated Amyloid β Peptide Species

2012

The amyloid β (Aβ) peptide, which is abundantly found in the brains of patients suffering from Alzheimer disease, is central in the pathogenesis of this disease. Therefore, to understand the processing of the amyloid precursor protein (APP) is of critical importance. Recently, we demonstrated that the metalloprotease meprin β cleaves APP and liberates soluble N-terminal APP (N-APP) fragments. In this work, we present evidence that meprin β can also process APP in a manner reminiscent of β-secretase. We identified cleavage sites of meprin β in the amyloid β sequence of the wild type and Swedish mutant of APP at positions p1 and p2, thereby generating Aβ variants starting at the first or seco…

Integrative proteomics: functional and molecular characterization of a particular glutamate-related neuregulin isoform.

2005

Glutamate is the major excitatory neurotransmitter in the mammalian brain and is related to memory by calcium-conducting receptors. Neuregulins have emerged as long-term modulating molecules of synaptic signaling by glutamate receptors, playing a role in some cognition/memory-related disorders and moreover being part of transient functional microdomains, called lipid rafts. Here we characterize one specific isoform of neuregulin as a central biomarker for glutamate-related signaling, integrating results from in vitro and in vivo models by a differential functional and proteomic approach.

Tissue proteomics of the human mammary gland: towards an abridged definition of the molecular phenotypes underlying epithelial normalcy.

2010

Our limited understanding of the biological impact of the whole spectrum of early breast lesions together with a lack of accurate molecular-based risk criteria for the diagnosis and assignment of prognostic significance to biopsy findings presents an important problem in the clinical management of patients harboring precancerous breast lesions. As a result, there is a need to identify biomarkers that can better determine the outcome of early breast lesions by identifying subpopulations of cells in breast premalignant disease that are at high-risk of progression to invasive disease. A first step towards achieving this goal will be to define the molecular phenotypes of the various cell types …