Questioni di lessico politico tra traduzioni di testi latini e trasmissione della Politica di Aristotele: libertas e liberté nelle traduzioni di Oresme, Foulechat e del Songe du Vergier

In order to show the complexity of translating from Latin to French in Middle-Ages, this article focuses on the term libertas. The pivotal question for medieval translators is how to render the different meanings (theological, ethical, political) of libertas. Three medieval authors as Denis Foulechat, Evrart de Tremaugon and Nicole Oresme find personal solutions, handling the French of their own age. But are their personal choices consistent with the meaning of the word that they are translating? A creative translator can help his readers and enrich the language they speak, but he can also alter what he is translating

Inflammatory Bowel Disease: Autoimmune or Immune-mediated Pathogenesis?

The pathogenesis of Crohn's disease (CD) and ulcerative colitis (UC), the two main forms of inflammatory bowel disease (IBD), is still unclear, but both autoimmune and immune-mediated phenomena are involved. Autoimmune phenomena include the presence of serum and mucosal autoantibodies against intestinal epithelial cells in either form of IBD, and against human tropomyosin fraction five selectively in UC. In addition, perinuclear antineutrophil cytoplasmic antibodies (pANCA) are common in UC, whereas antibodies against Saccharomyces cerevisiae (ASCA) are frequently found in CD. Immune-mediate phenomena include a variety of abnormalities of humoral and cell-mediated immunity, and a generalized enhanced reactivity against intestinal bacterial antigens in both CD and UC. It is currently believed that loss of tolerance against the indigenous enteric flora is the central event in IBD pathogenesis. Various complementary factors probably contribute to the loss of tolerance to commensal bacteria in IBD. They include defects in regulatory T-cell function, excessive stimulation of mucosal dendritic cells, infections or variants of proteins critically involved in bacterial antigen recognition, such as the products of CD-associated NOD2/CARD15 mutations

First international summit on fibrosis in intestinal inflammation: mechanisms and biological therapies

The first meeting dedicated to intestinal fibrosis, entitled The First International Summit on Fibrosis in Intestinal Inflammation: Mechanisms and Biological Therapies, was held in Cleveland, Ohio, USA, on 28-29 September 2010. Intestinal fibrosis is a complication of inflammatory conditions affecting the small and large bowel and often results in serious clinical consequences. Despite its clinical importance, the study of inflammation-driven intestinal fibrosis has received very limited attention. This explains why so little is known about its pathophysiology and the lack of significant therapeutic advances, in contrast with the recent success achieved in controlling gut inflammation with biological agents. The meeting covered most aspects directly relevant to intestinal fibrosis, including gut inflammation; cellular and molecular mechanisms of intestinal fibrogenesis; new clinical, diagnostic and prognostic tests and novel therapeutic approaches

Le parole e la visioneComunicare l'esperienza visionaria: il caso di Ildegarda di Bingen

L'articolo intende evidenziare la strategia adottata da Ildegarda di Bingen per divulgare le visioni ricevute.Si mette allora in luce la strada dell'annullamento della personalità che riduce Ildegarda a uno specchio che deve riflettere le parole e le immagini di cui è stata testimone.L'esperienza di Ildegarda si dimostra essenzialmente visiva e parzialmente auditiva, con rarissimi accenni alla percezione di altri sensi.L'analisi del testo mette in evidenza una profonda sfiducia nella parola umana ritenuta strutturalmente incapace di inadatta a comunicare l'esperienza visionaria.Per questo motivo assume importanza l'adozione di immagini miniate, disegnate dalla stessa Ildegarda, al fine di supplire ai limiti del linguaggio degli uomini

L’ordine cristiano dei laici

Quando si usa il termine laico, occorre sempre rispondere ad alcune domande implicite: laico rispetto a chi? Quando? Un percorso tra le varie classificazioni che si possono trovare nei testi medievali. Nella convinzione che la struttura stessa della classificazione sia importante, l'articolo procede sulla base di un criterio quantitativo, facendo riferimento al numero di classi o generi identificati, a partire dalla divisione più semplice. Una passaggio dal semplice al complesso alla luce della centralità del binomio concettuale di unità-differenza. When we use the term laico, we must ever answer to some implicit questions: laico compared to whom? When? A path among the various classifications that we can find in medieval texts. Persuaded that the very structure of the classification is important, the paper goes on, according to a quantitative criterion, by reference to the number of identified classes or genres, starting from the simplest partition. A transition from the simple to the complex in the light of the centrality of two-faced concept of unit-difference

Probiotic Sonicates Selectively Induce Mucosal Immune Cells Apoptosis Through Ceramide Generation Via Neutral Sphingolyelinase

Background: Probiotics appear to be beneficial in inflammatory bowel disease, but their mechanism of action is incompletely understood. We investigated whether probiotic-derived sphingomyelinase mediates this beneficial effect. Methodology/Principal Findings: Neutral sphingomyelinase (NSMase) activity was measured in sonicates of the probiotic L.brevis (LB)and S. thermophilus (ST) and the non-probiotic E. coli EC) and E. faecalis (EF). Lamina propria mononuclear cells (LPMC) were obtained from patients with Crohn"s disease (CD) and Ulcerative Colitis (UC), and peripheral blood mononuclear cells (PBMC) from healthy volunteers, analysing LPMC and PBMC apoptosis susceptibility, reactive oxygen species (ROS) generation and JNK activation. In some experiments, sonicates were preincubated with GSH or GW4869, a specific NSMase inhibitor. NSMase activity of LB and ST was 10-fold that of EC and EF sonicates. LB and ST sonicates induced significantly more apoptosis of CD and UC than control LPMC, whereas EC and EF sonicates failed to induce apoptosis. Pre-stimulation with anti-CD3/CD28 induced a significant and time-dependent increase in LB-induced apoptosis of LPMC and PBMC. Exposure to LB sonicates resulted in JNK activation and ROS production by LPMC. NSMase activity of LB sonicates was completely abrogated by GW4869, causing a dose-dependent reduction of LB -induced poptosis. LB and ST selectively induced immune cell apoptosis, an effect dependent on the degree of cell activation and mediated by bacterial NSMase. Conclusions: These results suggest that induction of immune cell apoptosis is a mechanism of action of some probiotics and that NSMase-mediated ceramide generation contributes to the therapeutic effects of probiotics

Amino Acid Position 11 of HLA-DRβ1 is a Major Determinant of Chromosome 6p Association with Ulcerative Colitis

The major histocompatibility complex (MHC) on chromosome 6p is an established risk locus for ulcerative colitis (UC) and Crohn’s disease (CD). We aimed to better define MHC association signals in UC and CD by combining data from dense single nucleotide polymorphism (SNP) genotyping and from imputation of classical HLA types, their constituent SNPs and corresponding amino acids in 562 UC, 611 CD, and 1,428 control subjects. Univariate and multivariate association analyses were performed, controlling for ancestry. In univariate analyses, absence of the rs9269955 C allele was strongly associated with risk for UC (P = 2.67×$10^{-13}$). rs9269955 is a SNP in the codon for amino acid position 11 of HLA-DRβ1, located in the P6 pocket of the HLA-DR antigen binding cleft. This amino acid position was also the most significantly UC-associated amino acid in omnibus tests (P = 2.68×$10^{-13}$). Multivariate modeling identified rs9269955-C and 13 other variants in best predicting UC versus control status. In contrast, there was only suggestive association evidence between the MHC and CD. Taken together, these data demonstrate that variation at HLA-DRβ1, amino acid 11 in the P6 pocket of the HLA-DR complex antigen binding cleft is a major determinant of chromosome 6p association with ulcerative colitis

A pleiotropic missense variant in SLC39A8 is associated with Crohn's disease and human gut microbiome composition

Genome-wide association studies have identified 200 inflammatory bowel disease (IBD) loci, but the genetic architecture of Crohn's disease (CD) and ulcerative colitis remain incompletely defined. Here, we aimed to identify novel associations between IBD and functional genetic variants using the Illumina ExomeChip (San Diego, CA)

Genomes of Bacteroides Ovatus, B Cellulosilyticus, B Uniformis, Phocaeicola Vulgatus, and P Dorei Isolated From Gut Cavernous Fistulous Tract Micropathologies in Crohn\u27s Disease

Surgically removed bowels from Crohn\u27s disease patients exhibit a novel form of micropathologies known as cavernous fistulous tract microlesions (CavFT), resembling fissures. We announce the genomes/plasmids and antimicrobial resistance genes of six CavFT bacterial isolates representing the Bacteroidota genera Bacteroides and Phocaeicola. Plasmids were identified in Bacteroides cellulosilyticus and Phocaeicola vulgatus