Search results for "Metas"

Metástasis gingival de adenocarcinoma de colon

2006

La cavidad oral es lugar de asiento de tumores metastásicos, sobre todo con origen en mama y pulmón. La mayoría de los casos afectan por este orden a los huesos mandibular y maxilar, aunque en ocasiones se desarrollan sobre las partes blandas intraorales. Presentamos el caso de un paciente de 62 años diagnosticado de adenocarcinoma de colon sigmoide con metástasis ganglionares y hepáticas, que 6 meses después presenta una lesión vegetante en la encía, interpretada inicialmente como neoplasia primaria de encía, que tras ser biopsiada fue diagnosticada como adenocarcinoma intestinal metastásico. El estudio histológico es obligatorio para diferenciar un adenocarcinoma de los carcinomas de célu…

Adipose stem cells on the basis of tumor transformation

Mesenchymal stem cells thanks to their differentiated multipotent ability are considered the most promising candidate for tissue engineering and regenerative medicine. The source of mesenchymal stem cells up to about 20 years was represented by the bone marrow, but due to their limited amount of cells together with a very invasive and painfull surgical treatment, poorly accepted by patients, has led the scientific community to investigate an alternative mesenchymal stem cells source with similar properties. In particular, the adipose tissue has attracted the greatest interest thanks to its relative abundance, the easy of availability and the large amounts of mesenchymal stem cells which are…

Teacher students’ meaningful learning in widening learning worlds

2019

This qualitative metasynthesis investigated students’ meaningful learning experiences amid andragogical teacher education programmes. The programmes catered to the specific learning needs of adult students in the context of university-based teacher education. This study aimed to provide a wider picture of the frames of students’ meaningful learning in andragogical teacher education programmes. The findings revealed three major learning worlds of adult students’ meaningful learning, which formed a common system widening from the professional awakening to the transformative community and agency in society. Based on the findings, this study argues that in andragogical teacher education, which …

Solvent-dependent hypsochromic shift in the imidazole based complex [Cu(µ2-SO4)(Im)4] and ameliorative effects on breast cancer-induced bone metastas…

2023

A sulfate-bridged complex [Cu(µ2-SO4)(Im)4] (1) was prepared and structurally characterized, where Im: imidazole. The X-ray structure analysis reveals that 1 crystallizes in the monoclinic system with space group C2/c. The octahedral coordination around the metal center is made up of four distinct imine nitrogen atoms in the equatorial plane, and two sulfate oxygen atoms occupying the axial sites. The covalent linkage between metals via the sulfate group, forming infinite 1D zigzag chains, ensures the entanglement of the structure. These chains, in turn, are further assembled into a 2D network through N-H...O hydrogen bonding. Thermal analyses underline the high thermal stability of our com…

Análisis espectroscópico de fragmentos cometarios y asteroidales a su entrada en la atmósfera terrestre.

2002

En la presente tesis se analiza el origen y composición de la materia interplanetaria a partir de una perspectiva nueva basada en el estudio de los fenómenos luminosos que producen estas partículas a su entrada a la atmósfera terrestre, llamados meteoros. Estas partículas, procedentes mayoritariamente de la degradación de las superficies de cometas y asteroides, cuando se hayan en órbita solar se denominan genéricamente meteoroides. Dependiendo de la geometría del encuentro con la Tierra los meteoroides alcanzan la atmósfera a velocidades comprendidas en el rango de 11 a 73 km/s. A estas velocidades a alturas de entre 120 y 70 km. la densidad atmosférica es suficiente para que las colisione…

The geochemistry of Tl and its isotopes during magmatic and hydrothermal processes: The peralkaline Ilimaussaq complex, southwest Greenland

2014

Abstract We use thallium (Tl) concentrations, K/Rb, K/Tl and Rb/Tl ratios and Tl isotopes in minerals from the alkaline to peralkaline Ilimaussaq complex (South Greenland) to trace magmatic differentiation, crustal assimilation, magmatic degassing, ore precipitation and hydrothermal metasomatism. Closed-system magmatic differentiation is marked by a coherent decrease of K/Tl- and K/Rb-ratios, whereas crustal assimilation results in a strong Tl-enrichment, causing low K/Tl-ratios compared to K/Rb-ratios. Thallium isotopes show only slight changes during orthomagmatic differentiation and the assimilation of crustal material cannot be traced, since the isotopic composition of the average crust…

An In Vitro model to study bone metastasis.

2013

A proteomic cluster for osteotropic breast cancer cells

2014

EFFICACY OF ZOLEDRONIC ACID IN PATIENTS WITH COLORECTAL CANCER METASTATIC TO BONE

2010

Introduction. Bone metastases are an emerging clinical problem in colorectal cancer patients probably related to survival increase. There are no data in literature about the role of BPs in the treatment of bone disease from colorectal cancer. We present the final data of a large Italian multicenter retrospective analysis. Methods. 264 colorectal cancer patients with occurrence of bone metastases have been included in the study. All patients were dead due to cancer at the moment of the study inclusion. Patients characteristics, Skeletal Related Events (SRE) data and median survival after bone metastases appearance have been collected in a master data base and statistically analyzed. The prim…

Tailoring Third-Harmonic Diffraction Efficiency by Hybrid Modes in High-Q Metasurfaces

2021

Metasurfaces are versatile tools for manipulating light; however, they have received little attention as devices for the efficient control of nonlinearly diffracted light. Here, we demonstrate nonlinear wavefront control through third-harmonic generation (THG) beaming into diffraction orders with efficiency tuned by excitation of hybrid Mie-quasi-bound states in the continuum (BIC) modes in a silicon metasurface. Simultaneous excitation of the high-Q collective Mie-type modes and quasi-BIC modes leads to their hybridization and results in a local electric field redistribution. We probe the hybrid mode by measuring far-field patterns of THG and observe the strong switching between (0,-1) and…