Search results for " Cellular"

showing 10 items of 384 documents

Derivati policiclici con struttura complessa dotati di attività antiproliferativa

2017

Sono stati sintetizzati composti a struttura policiclica complessa. Tutti i composti sintetizzati sono stati saggiati dall'NCI (USA) su un panel di 60 linee cellulari tumorali umane. Sula base dei risultati ottenuti è stato possibile effettuare uno studio SAR che ha evidenziato come la presenza di gruppi idrofili è necessaria ai fini dell'attività antitumorale. E' stato inoltre studiato il meccanismo d'azione di queste molecole. E' stato notato un arresto delle cellule MDA-MB231 in fase G0/G1 correlato con la defosforilazione ed attivazione, indotta dai composti, della proteina pRb. Il meccanismo comunque varia arrestando il ciclo cellulare in fase G2/M quando per effetto della glicosilazio…

Settore BIO/10 - Biochimicaderivati policiclici attivita antitumorale ciclo cellulareSettore CHIM/08 - Chimica Farmaceutica
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Movimento, motivi bioevoluzionistici

2009

Settore BIO/17 - IstologiaAnatomia cellulare filogenesi movimento
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Role of vertical ZnO nanowires on modulating the myogenic differentiation of primary mesongioblast cells

2016

Settore CHIM/01 - Chimica AnaliticaZnO Nanowires Cellular differentation Biointerfaces
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Modeling the shrub and juniper encroachment in the western north America grasslands with a Cellular Automata model

2013

Settore ICAR/02 - Costruzioni Idrauliche E Marittime E Idrologiaencroachment cellular automata
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Digital control circuitry for the p53 dynamics in cancer cell and apoptosis

2010

Experimental work and theoretical models deduce a "digital" response of the p53 transcription factor when genomic integrity is damaged. The mutual influence of p53 and its antagonist, the Mdm2 oncogene, is closed in feedback. This paper proposes an aerospace architecture for translating the p53/Mdm2/DNA damage network into a digital circuitry in which the optimal control theory is applied for obtaining the requested dynamic evolutions of some considered cell species for repairing a DNA damage. The purpose of this paper is not to improve the analysis of the actual mathematical models but to demonstrate the usefulness of such digital circuitry design to detect and predict the cell species dyn…

Settore ING-IND/06 - Fluidodinamicap53 cellular circuitry feedback control protein networks signalling apoptosis
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MODELING THE SHRUB ENCROACHMENT IN THE NORTHERN CHIHUAHUAN DESERT GRASSLANDS WITH A CELLULAR AUTOMATA MODEL

2014

Shrub encroachment cellular automata ecohydrology
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From deterministic cellular automata to coupled map lattices

2016

A general mathematical method is presented for the systematic construction of coupled map lattices (CMLs) out of deterministic cellular automata (CAs). The entire CA rule space is addressed by means of a universal map for CAs that we have recently derived and that is not dependent on any freely adjustable parameters. The CMLs thus constructed are termed real-valued deterministic cellular automata (RDCA) and encompass all deterministic CAs in rule space in the asymptotic limit $\kappa \to 0$ of a continuous parameter $\kappa$. Thus, RDCAs generalize CAs in such a way that they constitute CMLs when $\kappa$ is finite and nonvanishing. In the limit $\kappa \to \infty$ all RDCAs are shown to ex…

Statistics and ProbabilityGeneral Physics and AstronomyFOS: Physical sciencesPattern Formation and Solitons (nlin.PS)Space (mathematics)01 natural sciences010305 fluids & plasmasLinear stability analysis0103 physical sciencesLimit (mathematics)Statistical physics010306 general physicsMathematical PhysicsBifurcationPhysicsCellular Automata and Lattice Gases (nlin.CG)Quiescent stateStatistical and Nonlinear PhysicsNonlinear Sciences - Chaotic DynamicsNonlinear Sciences - Pattern Formation and SolitonsCellular automatonNonlinear Sciences - Adaptation and Self-Organizing SystemsHomogeneousModeling and SimulationContinuous parameterChaotic Dynamics (nlin.CD)Adaptation and Self-Organizing Systems (nlin.AO)Nonlinear Sciences - Cellular Automata and Lattice Gases
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A core cochlear phenotype in USH1 mouse mutants implicates fibrous links of the hair bundle in its cohesion, orientation and differential growth

2008

The planar polarity and staircase-like pattern of the hair bundle are essential to the mechanoelectrical transduction function of inner ear sensory cells. Mutations in genes encoding myosin VIIa, harmonin, cadherin 23,protocadherin 15 or sans cause Usher syndrome type I (USH1, characterized by congenital deafness, vestibular dysfunction and retinitis pigmentosa leading to blindness) in humans and hair bundle disorganization in mice. Whether the USH1 proteins are involved in common hair bundle morphogenetic processes is unknown. Here, we show that mouse models for the five USH1 genetic forms share hair bundle morphological defects. Hair bundle fragmentation and misorientation (25-52° mean ki…

Stereocilia (inner ear)Cadherin Related ProteinsProtocadherinCell Cycle ProteinsNerve Tissue ProteinsMyosinsBiologyMechanotransduction CellularMiceCDH23Pregnancyotorhinolaryngologic diseasesmedicineAnimalsHumansInner earProtein PrecursorsMolecular BiologyActinMice KnockoutCadherinDyneinsAnatomyCadherinsMice Mutant StrainsCochleaCell biologyCytoskeletal ProteinsDisease Models AnimalPhenotypemedicine.anatomical_structureMyosin VIIaMicroscopy Electron ScanningFemalesense organsCarrier ProteinsUsher SyndromesTip linkPCDH15Developmental BiologyDevelopment
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A Theoretical Learning Model Combining Stochastic Cellular Automata and Economic Indicators to Simulate Land Use Change

2015

The study of change in land use has been included in territorial planning to inform spatial planners and policy makers of the possible developments they face in order to optimize future management decisions. In this paper the authors present the core of an original learning model coupling stochastic Cellular Automata and economic indicators to simulate the land use change. This model is an important step in building an “environmental virtual laboratory” to explore, explain and forecast land use change.

Stochastic cellular automatonEconomic indicatorLand useOperations researchComputer scienceStochastic modellingManagement scienceVirtual LaboratoryReinforcement learningLand use land-use change and forestryCellular automatonInternational Journal of Applied Evolutionary Computation
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Strategie di difesa in risposta a stress in embrioni di riccio di mare: L'embrione di riccio di Paracentrotus lividus come modello sperimentale per l…

2013

Negli ultimi decenni, grazie alle nuove tecnologie e alla maggiore disponibilità di strumenti di ricerca, il campo riguardante lo studio delle strategie di difesa attivate nella risposta a stress, compresi i meccanismi di apoptosi e autofagia, è divenuto molto ampio ed è in continua espansione. Sin dagli albori della Biologia, gli studi condotti sul modello sperimentale di riccio di mare hanno permesso di ottenere conoscenze di base, spesso applicabili ad altri modelli biologici. I dati riportati nel presente libro dovrebbero aiutare a far luce sui meccanismi di difesa che le cellule sono in grado di attivare, in caso di necessità, se esposte a sfavorevoli condizioni ambientali. Le osservaz…

Strategie di difesa embrioni di riccio di mare Paracentrotus lividus Stress Cadmio Autofagia Apoptosi Morte Cellulare Microscopia Confocale.Settore BIO/06 - Anatomia Comparata E Citologia
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