Search results for "reserva"
showing 10 items of 630 documents
Beeinflussung des Leberzellmetabolismus, der Freisetzung von reaktiven Sauerstoffspezies sowie Apoptoseaktivierung durch hypotherme oxygenierte Leber…
2003
Two different methods of liver preservation were compared : simple cold storage (CS) and hypothermic oxygenated perfusion extracorporal (HOPE). After 10 h of preservation (4°C) with modified UW solution reperfusion was performed by isolated liver perfusion for 90 minutes. Reperfusion injury was estimated by release of cytosolic enzymes, formation of superoxide anions, determination of lipid peroxidation, glycolytic metabolites, bileflow and by PCR analysis. The results showed that after cold storage the formation of reactive oxygen species was significant higher as compared with perfused livers. Correspondingly expressions of mediators (TNFα, NF kappa B, MIP-2, SAPK) and apoptosis (Caspase …
A newin vitroapproach for the simultaneous determination of phase I and phase II enzymatic activities of human hepatocyte preparations
2007
Primary hepatocytes are still the best qualified in vitro system to anticipate drug metabolism in man. Recent advances in hepatocytes cryopreservation have notably increased their use not only for drug metabolism studies, but also for other applications such as cell transplantation. Evaluation of the drug-metabolizing competence of each hepatocytes preparation is needed. To date, the metabolic characterization of hepatocytes preparations relies on the assessment of phase I activities and the role of phase II enzymes receives little attention. A novel approach for the rapid assessment of the metabolic functionality of hepatocytes has been developed. A five-probe cocktail was used to simultan…
Steviol Glycosides Stability after Pulsed Electric Technologies and Ultrasounds Treatments in Fruit Juice Blend Sweetened with Stevia rebaudiana
2016
Stevia rebaudiana bartoni due to its high content in steviol glycosides and the ability to serve as a natural antimicrobial to complement the effectiveness of pulsed electric technologies for food preservation, has been used more frequently to improve sensorial properties of liquid foods.
Fluorescence and color as markers for the Maillard reaction in milk–cereal based infant foods during storage
2007
Abstract Free and total fluorescence compounds and color formation were measured in three different milk–cereal based infant foods stored at 25, 30 and 37 °C for 9 months to evaluate the advanced and final stages of the Maillard reaction. Milk–cereal infant foods containing honey (B) or fruits (C) had fluorescent values higher than sample (A) without them. This difference could be ascribed to the higher monosaccharide (fructose and/or glucose) content of (B) and (C), which could increase susceptibility to the Maillard reaction. However, for color increase (ΔE), no significant differences (p
Effectiveness of Preservative Treatments on Coloured Ruditic Building Stones
2009
: The dark grey Breccia di Billiemi and the Ammonitico Rosso of Piana degli Albanesi, two coloured stones widely used in monuments both outdoor and indoor in Sicily, undergo significant decay as effect of weathering: colour change and development of surface microcracks which affect not only the chromatic aspect but also the state of aggregation. In a previous study (Fracture and Failure of Natural Building Stones, 2006, Springer, Dordrecht, The Netherlands: 329), such effects were successfully reproduced on laboratory samples by means of artificial accelerated weathering and the different response of veins and grains to the ageing agents was related to the microstructure of stones. In this…
Conductas de riesgo y actitudes relacionadas con la infección por vih/sida en hsh
2014
Abstract:The aim of this investigation is to analyze sexual risk behaviors and attitudes for HIV/AIDS infection of MSM. The ENSI was administrated to 202 men, 168 homosexuals and 24 bisexuals, from 14 to 57 years. The results show a high confidence in condoms as a method of HIV prevention (75.7% very effective and 28.1% effective); however the systematic use of a condom is moderate in anal intercourse (54.64%) and in vaginal intercourse (49.05%) and very low in oral sex (6.22%). There is a low perceived probability (20.28%) and moderate fear (41.25%) become infected with HIV. 20.3% report having drunk alcohol in the last relationship and 5.4% say other drugs. These results should be conside…
Proyecto: cámara de conservación de libros para la Biblioteca Histórica de la Universitat de València
2017
Las dificultades para conseguir unas condiciones ambientales óptimas para la conservación de nuestro patrimonio bibliográfico y el elevado consumo energético necesario para mantenerlas han sido algunas de las premisas que nos han llevado a la proyección y realización de esta cámara de conservación. En ella se ha creado un espacio libre de influencia exterior que facilita la obtención de un clima adecuado y estable, con un consumo mínimo de energía, en el que se controlan los principales factores de degradación ambiental: temperatura y humedad precisas y estables, así como un control minucioso de la contaminación atmosférica y biológica; todo ello dirigido a aumentar la esperanza de vida de …
Tratamiento de preservación de fertilidad en pacientes con cáncer de endometrio
2021
El carcinoma endometrial (CE) en mujeres jóvenes es un hecho infrecuente, tan solo el 4% de los diagnósticos se realizan en menores de 40 años. El estándar para el tratamiento es la cirugía con una supervivencia global a 5 años en torno al 93%. Como alternativa, en casos en los que existe un gran deseo genésico, se puede plantear un tratamiento conservador alternativo basado en progestágenos orales, fundamentalmente acetato de medroxiprogesterona o acetato de megestrol y más recientemente, DIU de levonorgestrel. Esta opción se podría considerar en pacientes con diagnóstico histológico de CE bien diferenciado (o enfermedad premaligna como hiperplasia atípica) en estadio inicial, cuando no ex…
Valoración de la afectación de la reserva ovárica tras criopreservación de tejido ovárico y tratamiento oncológico: papel destacado de la hormona ant…
2016
INTRODUCCIÓN Identificación del problema: antecedentes y estado actual El uso de quimioterapia y radioterapia en el tratamiento oncológico puede comprometer la función ovárica de la mujer, sobre todo el aquellos casos de niñas o mujeres jóvenes que aún no han llegado a plantearse descendencia en el momento del diagnóstico del cáncer. Se estima que 1,5 millones de hombres y mujeres fueron diagnosticados de cáncer en 2010, y que de este grupo, el 10% son menores de 45 años y el 1% menores de 20 años. Los cánceres más frecuentemente diagnosticados en adultos entre 20 y 44 años en EEUU son el cáncer de mama, linfoma, melanoma y leucemia.En nuestro país, las enfermedades malignas alcanzan a una …
Aging on Indian Reservations: The Ugly, the Bad, and the Good
2012
This chapter examines the conditions for the older population on Indian reservations and how those conditions compare to the non-Indian population. The discussion opens on a national level, though the focus is on tribes in the Western United States. Older Indians on reservations are aging in a society where they are an almost invisible part of rural America. Yet the reservations, despite the poor socioeconomic conditions on many, represent home and a place for off-reservation Native Americans to come back to. To include the voices of Indian elders and gain insights into how they perceive being elders, we report on interviews conducted with older Indians on the Nez Perce reservation in Idaho…