Search results for "Anatomia"

showing 10 items of 1108 documents

Significado clínico-patológico de las mutaciones de los genes c-Kit y PDGFRa en tumores del estroma del tracto gastrointestinal

2009

Los tumores del estroma gastrointestinal (GIST) se caracterizan por la hiperexpresión del receptor de membrana c-KIT (CD117) que se detecta en un 95% de los GIST. Recientemente, se ha descrito que entre el 5-7% de GIST expresan PDGFRα. En nuestro estudio se quiere observar la relación directa entre las mutaciones y tipo de mutaciones obtenidas en los dos genes a estudiar (c-KIT y PDGFRα) con la evolución clínico-histopatológica de los pacientes. Para ello se han recogido un total de 173 casos incluidos en parafina diagnosticados en el periodo comprendido entre los años 1985 y 2007. Del total de casos, 83 pertenecen al Hospital Clínico de Valencia, 24 casos de la Fundación Instituto Valencia…

Facultat de Medicina616Anatomia611Patologia. Medicina clínica. Oncologia
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El núcleo incertús y su contribución al control de la oscilación theta hipocámpica

2010

Las oscilaciones cerebrales constituyen un mecanismo para la integración temporal de la actividad de poblaciones neuronales distribuidas. La oscilación theta es característica del estado activado del hipocampo y su contribución resulta fundamental para los procesos cognitivos en que participa esta estructura y que incluyen la integración sensorimotora y los procesos de aprendizaje y memoria. La generación o modulación de esta actividad rítmica están reguladas por un complejo sistema que tiene su origen en el tronco del encéfalo y en el que intervienen de manera crítica estructuras del prosencéfalo basal y del diencéfalo. En el tegmento pontino, el núcleo incertus (NI) presenta proyecciones …

Facultat de MedicinaAnatomia611
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Estudio ecográfico de la afectación ganglionar en el cáncer de mama

2010

La tendencia actual en el tratamiento del cáncer de mama está orientada hacia una cirugía conservadora con neoadyuvancia. El factor pronóstico más importante sigue siendo la afectación ganglionar. Para su estadiaje se realizaba antiguamente la linfadenectomía axilar, que comportaba una importante morbilidad asociada. Por ello, se han desarrollado nuevas técnicas menos agresivas de estadiaje axilar. Las técnicas más utilizadas actualmente son la técnica del ganglio centinela y la ecografía, sola o complementada con punción aspiración de aguja fina (PAAF). El objetivo principal de esta tesis es la realización de un análisis estadístico sobre la fiabilidad de la ecografía axilar sola o complem…

Facultat de MedicinaAnatomia611
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Influencia de la ruta Hedgehog-Gli en tumores gliales

2011

Introducción Los astrocitomas de alto grado son los tumores intrínsecos más frecuentes en el cerebro adulto con una supervivencia media alrededor de 14,2 meses. Desde el aislamiento de las células madre tumorales (CMT) de glioblastomas (GBM) como población minoritaria implicada en el origen y mantenimiento de la masa tumoral, hay un interés creciente en el estudio de la ruta clásicamente implicada en desarrollo Hedgehog-Gli (Hh-Gli) con gran controversia en la literatura en cuanto a su papel. Hh-Gli se ha visto alterada en distintos tumores malignos y algunos trabajos apuntan a una reducción tumoral in vitro e in vivo en GBM con la aplicación de distintos inhibidores de esta ruta. En este t…

Facultat de MedicinaAnatomia611
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Fibroblast’s role in breast cancer: a proteomic approach

2008

Fibroblasts are the major mesenchymal cell types committed to the matrix formation and renewal. Moreover they are the main source of paracrine factors that influence the growth of epithelial cells of neighbouring tissues. For these properties they may be involved in tumourigenesis, either by remodelling the tumor-associated extracellular matrix (ECM), and by the production of paracrine factors that influence the growth of carcinoma cells. Studies on fibroblasts associated to carcinomas have documented their phenotypic modifications, including abnormal migratory behaviour in vitro and growth factors altered expression(Schor & Schor, 2001). In addition, fibroblasts often recruit inflammat…

Fibroblasts proteomics breast cancerfibroblast breast cancerSettore BIO/06 - Anatomia Comparata E Citologia
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Effects of dietary administration of fenugreek seeds, alone or in combination with probiotics, on growth performance parameters, humoral immune respo…

2016

The use of immunostimulants is considered a promising preventive practice that may help to maintain animal welfare and a healthy environment, while increasing production and providing higher profits. The purpose of this study was to evaluate the effects on gilthead seabream (Sparus aurata L.) of the dietary administration of fenugreek (Trigonella foenum graecum) seeds, alone or combined with one of the following probiotic strains: Bacillus licheniformis (TSB27), Lactobacillus plantarum or Bacillus subtilis (B46). Gilthead seabream were fed a control or one of the supplemented diets for 3 weeks. The effects of these supplemented diets on growth performance parameters and the humoral immune r…

Fish Proteins0301 basic medicineTrigonellaBacillus subtilisAquatic ScienceReal-Time Polymerase Chain Reactionlaw.invention03 medical and health sciencesProbioticImmune systemlawSettore AGR/20 - ZoocoltureGram-Negative BacteriaGene expressionAnimalsEnvironmental ChemistryFood scienceBacillus licheniformisSettore BIO/06 - Anatomia Comparata E CitologiaInnate immune systembiologyPlant ExtractsFenugreek seeds Probiotics Innate immune response Gene expression Gilthead seabream (Sparus aurata L.) TeleostsProbiotics04 agricultural and veterinary sciencesGeneral Medicinebiology.organism_classificationAnimal FeedSea BreamDietTrigonella030104 developmental biologyDietary SupplementsImmunology040102 fisheries0401 agriculture forestry and fisheriesLactobacillus plantarum
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By-products of farmed European sea bass (Dicentrarchus labrax L.) as a potential source of n-3 PUFA

2013

Total by-products (TBP) obtained by filleting farmed and wild European sea bass (Dicentrarchus labrax) were analyzed to evaluate if, on the basis of the percentage yield, total lipid content and fatty acid composition, they can be considered a resource of n-3 polyunsaturated fatty acids (PUFA). Results show that TBP from intensively farmed fish (IFF) contain higher total lipid content and have a higher level of n-3 PUFA rich in eicosapentaenoic (EPA) and docosaexaenoic acid (DHA), compared to extensively farmed fish (EFF) and to wild fish (WF) (P < 0.05). This difference may suggest a way of promotion of TBP from IFF sea bass through the n-3 PUFA recovery by extraction.

Fish farmingSettore BIO/05 - ZoologiaPlant ScienceBiologyBiochemistryEuropean sea baSettore BIO/10 - Biochimicaby-productGeneticsPotential sourceDicentrarchus labraxFood scienceSea bassSettore BIO/06 - Anatomia Comparata E CitologiaMolecular BiologyEcology Evolution Behavior and SystematicsN 3 pufachemistry.chemical_classificationfood and beveragesCell BiologySettore AGR/15 - Scienze E Tecnologie Alimentaribiology.organism_classificationFisherychemistryn-3 polyunsaturated fatty acidLipid contentlipids (amino acids peptides and proteins)Animal Science and ZoologyDicentrarchussense organsFatty acid compositionPUFAPolyunsaturated fatty acid
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Melanoma cells release extracellular vesicles which contain H1° RNA and RNA-binding proteins

2015

G26/24 oligodendroglioma cells produce EVs that contain pro-apoptotic proteins, such as FasL and TRAIL, able to induce neuronal- [1] and astrocytic- [2] death. Cancer cells release EVs [3] through which transferring proteins, such as extracellular matrix remodelling proteases [4], and H1°, a differentiation-specific histone [5]. By releasing H1°, cells could escape differentiation cues [5]. To verify the role of EVs in releasing specific proteins and mRNAs, in this study we used A375 melanoma cells. EVs were purified from cell culture media as previously reported [1, 2]. T1 RNase-protection assays were performed on total cell lysates and EVs, as described elsewhere [6]. RNA-binding proteins…

G26/24 oligodendroglioma cells extracellular vesicles EVs Histone H1.0 A375 melanoma cells myelin expression factor-2 (MYEF2)Settore BIO/10 - BiochimicaSettore BIO/06 - Anatomia Comparata E Citologia
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Autophagy induction in sea urchin embryos exposed to gadolinium ions

2014

Sea urchin embryos are highly sensitive to several kinds of stressors, and able to activate different defense strategies. Gadolinium (Gd) is a metal of the lanthanide series of the elements: its chelates are employed as contrast agents for magnetic resonance imaging since the 1980s. Gd complexes are released in the aquatic environment, making Gd an emergent environmental pollutant. In this study we focused on the effects of Gd ions on sea urchin embryos development. The study was conducted looking at three different processes: general development, apoptosis and autophagy. At the whole morphological level, Paracentrotus lividus sea urchin embryos continuously exposed to Gd ions displayed mor…

Gadolinium Autophagy Sea UrchinSettore BIO/06 - Anatomia Comparata E Citologia
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Gadolinium induces autophagy in sea urchin embryos

2014

Gadolinium Autophagy Sea UrchinSettore BIO/06 - Anatomia Comparata E Citologia
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