La certificazione di qualità per il sistema di gestione aziendale: il caso Intersonda S.r.l.

L’obiettivo alla base del presente lavoro è quello di indagare il reale significato della qualità in azienda, i presupposti da cui questa ha origine e le sue linee di sviluppo future, in particolare per quanto attiene l’applicazione della stessa ai sistemi di gestione aziendale, in linea con quanto disposto dalla norma internazionale UNI EN ISO 9001:2008. Si tratta di un tema dibattuto negli anni che si rinnova continuamente in seguito all'evoluzione delle modalità di organizzazione e svolgimento dell’attività economica. Per approfondire al meglio queste tematiche il lavoro viene suddiviso in due parti: la prima puramente teorica, la seconda legata ad un caso pratico. In quest’ultima sezione viene infatti analizzata la società Intersonda S.r.l., focalizzando particolarmente l’attenzione sul suo sistema di gestione e il suo livello di adeguamento alla normativa di riferimento

The impact of anxiety on lactose intolerance symptoms

n/

A chimeric cyclic interferon-alpha2b peptide induces apoptosis by sequential activation of phosphatidyl inositol 3-kinase, protein kinase Cdelta and p38 MAP kinase

We have previously demonstrated that tyrosine phosphorylation of STAT1/3 and p38 mitogen-activated protein kinase (p38 MAPK) activation are involved in the apoptotic response triggered by a chimeric cyclic peptide of the interferon-alpha2b (IFN-alpha2b) in WISH cells. Since the peptide also induced serine phosphorylation of STAT proteins, in the present study we examined the kinase involved in serine STAT1 phosphorylation and the signaling effectors acting upstream such activation. We first found that p38 MAPK is involved in serine STAT1 phosphorylation, since a reduction of phophoserine-STAT1 levels was evident after incubating WISH cells with cyclic peptide in the presence of a p38 pharmacological inhibitor or a dominant-negative p38 mutant. Next, we demonstrated that the peptide induced activation of protein kinase Cdelta (PKCdelta). Based on this finding, the role of this kinase was then evaluated. After incubating WISH cells with a PKCdelta inhibitor or after decreasing PKCdelta expression levels by RNA interference, both peptide-induced serine STAT1 and p38 phosphorylation levels were significantly decreased, indicating that PKCdelta functions as an upstream regulator of p38. We also showed that PKCdelta and p38 activation stimulated by the peptide was inhibited by a specific pharmacological inhibitor of phosphatidylinositol 3-kinase (PI3K) or by a dominant-negative p85 PI3K-regulatory subunit, suggesting that PI3K is upstream in the signaling cascade. In addition, the role of PI3K and PKCdelta in cyclic peptide-induced apoptosis was examined. Both signaling effectors were found to regulate the antiproliferative activity and the apoptotic response triggered by the cyclic peptide in WISH cells. In conclusion, we herein demonstrated that STAT1 serine phosphorylation is mediated by the sequential activation of PI3K, PKCdelta and p38 MAPK. This signaling cascade contributes to the antitumor effect induced by the chimeric IFN-alpha2b cyclic peptide in WISH cells.Fil: Blank, Viviana Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; ArgentinaFil: Bertucci, Lucila. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; ArgentinaFil: Furmento, Verónica Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; ArgentinaFil: Peña, Clara. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; ArgentinaFil: Marino, Veronica Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; ArgentinaFil: Roguin, Leonor Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentin

The role of intestinal microbiota and the immune system

The human gut is an ecosystem consisting of a great number of commensal bacteria living in symbiosis with the host. Several data confirm that gut microbiota is engaged in a dynamic interaction with the intestinal innate and adaptive immune system, affecting different aspects of its development and function

HDAC6 activity is a non-oncogene addiction hub for inflammatory breast cancers

International audienceAbstractIntroductionInflammatory breast cancer (IBC) is the most lethal form of breast cancers with a 5-year survival rate of only 40 %. Despite its lethality, IBC remains poorly understood which has greatly limited its therapeutic management. We thus decided to utilize an integrative functional genomic strategy to identify the Achilles’ heel of IBC cells.MethodsWe have pioneered the development of genetic tools as well as experimental and analytical strategies to perform RNAi-based loss-of-function studies at a genome-wide level. Importantly, we and others have demonstrated that these functional screens are able to identify essential functions linked to certain cancer phenotypes. Thus, we decided to use this approach to identify IBC specific sensitivities.ResultsWe identified and validated HDAC6 as a functionally necessary gene to maintain IBC cell viability, while being non-essential for other breast cancer subtypes. Importantly, small molecule inhibitors for HDAC6 already exist and are in clinical trials for other tumor types. We thus demonstrated that Ricolinostat (ACY1215), a leading HDAC6 inhibitor, efficiently controls IBC cell proliferation both in vitro and in vivo. Critically, functional HDAC6 dependency is not associated with genomic alterations at its locus and thus represents a non-oncogene addiction. Despite HDAC6 not being overexpressed, we found that its activity is significantly higher in IBC compared to non-IBC cells, suggesting a possible rationale supporting the observed dependency.ConclusionOur finding that IBC cells are sensitive to HDAC6 inhibition provides a foundation to rapidly develop novel, efficient, and well-tolerated targeted therapy strategies for IBC patients