13 research outputs found

    Signaling pathway networks mined from human pituitary adenoma proteomics data

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    Abstract Background We obtained a series of pituitary adenoma proteomic expression data, including protein-mapping data (111 proteins), comparative proteomic data (56 differentially expressed proteins), and nitroproteomic data (17 nitroproteins). There is a pressing need to clarify the significant signaling pathway networks that derive from those proteins in order to clarify and to better understand the molecular basis of pituitary adenoma pathogenesis and to discover biomarkers. Here, we describe the significant signaling pathway networks that were mined from human pituitary adenoma proteomic data with the Ingenuity pathway analysis system. Methods The Ingenuity pathway analysis system was used to analyze signal pathway networks and canonical pathways from protein-mapping data, comparative proteomic data, adenoma nitroproteomic data, and control nitroproteomic data. A Fisher's exact test was used to test the statistical significance with a significance level of 0.05. Statistical significant results were rationalized within the pituitary adenoma biological system with literature-based bioinformatics analyses. Results For the protein-mapping data, the top pathway networks were related to cancer, cell death, and lipid metabolism; the top canonical toxicity pathways included acute-phase response, oxidative-stress response, oxidative stress, and cell-cycle G2/M transition regulation. For the comparative proteomic data, top pathway networks were related to cancer, endocrine system development and function, and lipid metabolism; the top canonical toxicity pathways included mitochondrial dysfunction, oxidative phosphorylation, oxidative-stress response, and ERK/MAPK signaling. The nitroproteomic data from a pituitary adenoma were related to cancer, cell death, lipid metabolism, and reproductive system disease, and the top canonical toxicity pathways mainly related to p38 MAPK signaling and cell-cycle G2/M transition regulation. Nitroproteins from a pituitary control related to gene expression and cellular development, and no canonical toxicity pathways were identified. Conclusions This pathway network analysis demonstrated that mitochondrial dysfunction, oxidative stress, cell-cycle dysregulation, and the MAPK-signaling abnormality are significantly associated with a pituitary adenoma. These pathway-network data provide new insights into the molecular mechanisms of human pituitary adenoma pathogenesis, and new clues for an in-depth investigation of pituitary adenoma and biomarker discovery.</p

    Application of photovoltaic technologies on the roofs of buildings with GIS software = L’applicazione delle tecnologie fotovoltaiche integrate sulle coperture degli edifici con software GIS

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    Per pianificare l’utilizzo di tecnologie che sfruttano energia rinnovabile su un territorio, in particolare quelle che riguarda il solare, si possono utilizzare i software GIS (Sistemi Informativi Geografici) che consentono di analizzare e rappresentare un dato geo-riferito. In questo studio è stato approfondito il tema dell’utilizzo delle tecnologie fotovoltaiche negli ambienti urbani considerando le ombre portate dall’orografia del territorio e anche quelle del contesto costruito; in particolare sono state valutate le potenzialità delle applicazioni integrate sulle coperture degli edifici. L’analisi si è basata su: l’utilizzo di sistemi informativi geografici e dati LiDAR (Light Detection And Ranging), l’impiego di software per la ricostruzione tridimensionale degli edifici e per la valutazione dell’irradiazione solare incidente (Ecotect versione 5.5). Dopo una breve descrizione di alcune applicazioni GIS sul fotovoltaico effettuate in Italia e nel mondo, in questo lavoro viene presentata una metodologia di calcolo che consente la valutazione del potenziale fotovoltaico sulle coperture degli edifici con la definizione di un metodo semplificato che è stato verificato sulla base di un monitoraggio effettuato dalla Provincia di Torino. Questo lavoro è scaturito da uno stage che ha visto la collaborazione tra il Politecnico di Torino e il CSI Piemonte
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