Adinak oozitoetan eragindako gene adierazpen aldaketa

[eus]Ikusi da herrialde garatuetan gizakiek umeak gero eta beranduago izaten dituztela, azken urteetan umeak izateko arazoak dituzten bikoteen kopurua asko handitu da. 30-40 urtetako emakumeek oozito akastun gehiago ekoizten dituzte, uste da gene adierazpen aldaketak akats horiek nola eman diren azaldu dezakeela. Horregatik, sagu gazte eta zaharrei oozitoak erauziko zaizkie eta mikroarray bidez geneen adierazpena aztertuko da. Adinak eta meiosi fase desberdinek duten gene adierazpen aldakortasuna konparatzean ikusi da meiosi fase desberdinen artean aldakortasun handiagoa dagoela. Adinarekin erlazionatuak dauden geneek elektroi garraio katean, ziklo zelularra eta garraio zelularrean parte hartzen dute. Meiosi fase desberdinetan adierazpen maila desberdina duten geneek gene adierazpenean, prozesu metabolikoetan, ziklo zelularretan eta erregulazio zelularretan parte hartzen dute.

Dependencia térmica del disponible metabólico para la actividad en bivalvos aclimatados a distintas temperaturas

[es]Para la realización del presente estudio, se utilizaron 50 ejemplares de Ruditapes Decussatus o almeja fina y otros 50 de Ruditapes Philippinarum o almeja japonesa, recogidas y seleccionadas por mariscadores profesionales de la Bahía de Santoña (Cantabria). La temperatura influye en las tasas fisiológicas, llegando a generar finalmente alteraciones en el metabolismo del organismo. Por ello, una variable de interés para el estudio se trata de la tasa metabólica, la cual puede ser estimada a través de la medición de la tasa de consumo de oxígeno (VO2). El objetivo final de este estudio es, por tanto, observar el efecto cinético de la temperatura y la aclimatación sobre el metabolismo de ambas especies de almejas, distribuidas en cuatro grupos de estudio (almeja fina y japonesa aclimatadas a 12oC y 22oC), midiendo la VO2 a diferentes temperaturas de exposición (7oC, 12oC, 17oC, 22oC y 27oC). Utilizando el la respirometría como medio para calcular la VO2 y el cálculo de la Q10 para determinar las tasas metabólicas. Los resultados ponen de manifiesto que en tres de los cuatro casos no se observaron diferencias significativas entre el metabolismo rutina y el metabolismo estándar. También se comprobó positivamente el efecto cinético de la temperatura sobre la VO2; así como la presencia de un intervalo de temperaturas, en las que se realiza compensación, más amplio para almeja japonesa que para almeja fina.

Estimacion de sexo y edad a nivel esqueletico: aplicacion forense y antropologica

[ES] La estimación del sexo y la edad son esenciales para la identificación individual de restos humanos y para el conocimiento e interpretación de la variabilidad biológica del pasado. El objetivo de este trabajo es la elaboración de un protocolo metodológico de análisis morfológico y morfométrico, para la estimación del sexo en adultos y de la edad en subadultos y adultos. Las principales metodologías incluidas en este trabajo pueden emplearse en restos esqueléticos de procedencia europea. Se realizó una revisión bibliográfica en revistas de ámbito forense y antropológico a fin de reunir un conjunto de metodologías aplicables tanto a esqueletos completos como parciales. Finalmente, en la elección de los métodos incluidos en este protocolo se tuvieron en cuenta dos criterios: la bondad de ajuste y el grado de complejidad del método.

Implicación de los microRNAs en la toxicidad del metotrexato en Leucemia Linfoblástica Aguda infantil

Analisis de la implicacion de los Polimorfismos de LLA en la respuesta al Metotrexato

Implicación de rs924607 del gen CEP72 en la neurotoxicidad asociada a la vincristina en pacientes con leucemia linfoblastica aguda (LLA)

Este trabajo se trata de un estudio estadístico de asociación entre el genotipo del SNP rs924607 presente en la región promotora del gen CEP72, y la neurotoxicidad asociada a la vincristina, en pacientes pediátricos de Leucemia Linfoblástica Aguda. El objetivo es determinar si el alelo presente en dicho SNP puede ser empleado como biomarcador para predecir la neurotoxicidad asociada a la vincristina.

Implicación de LKB1 en la patogénesis y progresión del cáncer de próstata.

303 p.

Early astrocytic atrophy in the entorhinal cortex of a triple transgenic animal model of Alzheimer's disease

The EC (entorhinal cortex) is fundamental for cognitive and mnesic functions. Thus damage to this area appears as a key element in the progression of AD (Alzheimer's disease), resulting in memory deficits arising from neuronal and synaptic alterations as well as glial malfunction. In this paper, we have performed an in-depth analysis of astroglial morphology in the EC by measuring the surface and volume of the GFAP (glial fibrillary acidic protein) profiles in a triple transgenic mouse model of AD [3xTg-AD (triple transgenic mice of AD)]. We found significant reduction in both the surface and volume of GFAP-labelled profiles in 3xTg-AD animals from very early ages (1 month) when compared with non-Tg (non-transgenic) controls (48 and 54%, reduction respectively), which was sustained for up to 12 months (33 and 45% reduction respectively). The appearance of Lambda beta (amyloid beta-peptide) depositions at 12 months of age did not trigger astroglial hypertrophy; nor did it result in the close association of astrocytes with senile plaques. Our results suggest that the AD progressive cognitive deterioration can be associated with an early reduction of astrocytic arborization and shrinkage of the astroglial domain, which may affect synaptic connectivity within the EC and between the EC and other brain regions. In addition, the EC seems to be particularly vulnerable to AD pathology because of the absence of evident astrogliosis in response to A beta accumulation. Thus we can consider that targeting astroglial atrophy may represent a therapeutic strategy which might slow down the progression of AD.

Analisis de las entidades no lucrativas del Pais Vasco dedicadas a la protección animal

This Final Project Grade, whose title is “Analysis of the non-lucrative entities of the Basque Country dedicated to animal protection”, has as main purpose the study of the historical, theoretical and legal context in which these institutions develop their activity, focusing in those which occur in the Basque Country.

“Pildorón”: ¿El fármaco del futuro?

Duración (en horas): De 41 a 50 horas Destinatario: Estudiante y Docente

Usage of substances and their dosage regimes in pharmacological animal models of schizophrenia

Background: Contrary to what is generally thought schizophrenia is a very common mental health issue. For this, several animal models are used to assess the illness in order to develop a definitive. The most widely spread paradigm is the use of pharmacological models. Aim: The aim of this review is to display which are the most used insults for the assessment of social behaviour related negative symptoms in animal models as well as to ascertain which is the most adequate regime. Design: Literature review. Methods: PubMed database was used for this article by the search of the indexed “schizophrenia”, “animal models”, “social behaviour” and “negative symptoms” descriptors. With the exception of a single article due to it value this review is based on articles from 10 years onwards. Besides, only clinical trials and reviews written in English or Spanish and that had laboratory rodents as target population were accepted. Results: The studies assessed agree that pharmacological models (specially those regarding the NMDA receptor antagonists) are a valuable means for the experimental investigation of negative symptoms in schizophrenia with the necessity to emphasise that only some negative symptoms (anhedonia and social interaction, mainly) can be experimentally assessed. Conclusions: There is not enough evidence regarding the fours aspects of this review. PCP, Ketamine or MK-801 in sub-acute dosage regimes are currently the most indicated insults to mimic schizophrenic symptoms in rodents, although further research in needed, albeit other substances are valuable as well. (In English language exclusively)

Dobutamine in Paediatric Population: A Systematic Review in Juvenile Animal Models

Objective: Although dobutamine is widely used in neonatal clinical practice, the evidence for its use in this specific population is not clear. We conducted a systematic review of the use of dobutamine in juvenile animals to determine whether the evidence from juvenile animal experiments with dobutamine supported the design of clinical trials in neonatal/ paediatric population. Methods: Studies were identified by searching MEDLINE (1946-2012) and EMBASE (1974-2012). Articles retrieved were independently reviewed by three authors and only those concerning efficacy and safety of the drug in juvenile animals were included. Only original articles published in English and Spanish were included. Results: Following our literature search, 265 articles were retrieved and 24 studies were included in the review: 17 focused on neonatal models and 7 on young animal models. Although the aims and design of these studies, as well as the doses and ages analysed, were quite heterogeneous, the majority of authors agree that dobutamine infusion improves cardiac output in a dose dependent manner. Moreover, the cardiovascular effects of dobutamine are influenced by postnatal age, as well as by the dose used and the duration of the therapy. There is inadequate information about the effects of dobutamine on cerebral perfusion to draw conclusions. Conclusion: There is enough preclinical evidence to ensure that dobutamine improves cardiac output, however to better understand its effects in peripheral organs, such as the brain, more specific and well designed studies are required to provide additional data to support the design of clinical trials in a paediatric population.

Brca1 is expressed in human microglia and is dysregulated in human and animal model of ALS

Background: There is growing evidence that microglia are key players in the pathological process of amyotrophic lateral sclerosis (ALS). It is suggested that microglia have a dual role in motoneurone degeneration through the release of both neuroprotective and neurotoxic factors. Results: To identify candidate genes that may be involved in ALS pathology we have analysed at early symptomatic age (P90), the molecular signature of microglia from the lumbar region of the spinal cord of hSOD1(G93A) mice, the most widely used animal model of ALS. We first identified unique hSOD1(G93A) microglia transcriptomic profile that, in addition to more classical processes such as chemotaxis and immune response, pointed toward the potential involvement of the tumour suppressor gene breast cancer susceptibility gene 1 (Brca1). Secondly, comparison with our previous data on hSOD1(G93A) motoneurone gene profile substantiated the putative contribution of Brca1 in ALS. Finally, we established that Brca1 protein is specifically expressed in human spinal microglia and is up-regulated in ALS patients. Conclusions: Overall, our data provide new insights into the pathogenic concept of a non-cell-autonomous disease and the involvement of microglia in ALS. Importantly, the identification of Brca1 as a novel microglial marker and as possible contributor in both human and animal model of ALS may represent a valid therapeutic target. Moreover, our data points toward novel research strategies such as investigating the role of oncogenic proteins in neurodegenerative diseases.

Dietary animal and plant protein intakes and their associations with obesity and cardio-metabolic indicators in European adolescents: the HELENA cross-sectional study

Background: Previous studies suggest that dietary protein might play a beneficial role in combating obesity and its related chronic diseases. Total, animal and plant protein intakes and their associations with anthropometry and serum biomarkers in European adolescents using one standardised methodology across European countries are not well documented. Objectives: To evaluate total, animal and plant protein intakes in European adolescents stratified by gender and age, and to investigate their associations with cardio-metabolic indicators (anthropometry and biomarkers). Methods: The current analysis included 1804 randomly selected adolescents participating in the HELENA study (conducted in 2006-2007) aged 12.5-17.5 y (47% males) who completed two non-consecutive computerised 24-h dietary recalls. Associations between animal and plant protein intakes, and anthropometry and serum biomarkers were examined with General linear Model multivariate analysis. Results: Average total protein intake exceeded the recommendations of World Health Organization and European Food Safety Authority. Mean total protein intake was 96 g/d (59% derived from animal protein). Total, animal and plant protein intakes (g/d) were significantly lower in females than in males and total and plant protein intakes were lower in younger participants (12.5-14.9 y). Protein intake was significantly lower in underweight subjects and higher in obese ones; the direction of the relationship was reversed after adjustments for body weight (g/(kg.d)). The inverse association of plant protein intakes was stronger with BMI z-score and body fat percentage (BF%) compared to animal protein intakes. Additionally, BMI and BF% were positively associated with energy percentage of animal protein. Conclusions: This sample of European adolescents appeared to have adequate total protein intake. Our findings suggest that plant protein intakes may play a role in preventing obesity among European adolescents. Further longitudinal studies are needed to investigate the potential beneficial effects observed in this study in the prevention of obesity and related chronic diseases.

Development of practical methodology and indicators for on-farm animal welfare assessment

163 p.