Search results for "ALAT"

Influencia de la exposición femenina a compuestos ambientales y procedentes de la dieta sobre los resultados del tratamiento de fecundación in vitro

2022

En las últimas décadas se han observado menores tasas de fertilidad, fundamentalmente en regiones industrializadas, lo que ha incrementado la necesidad de recurrir a técnicas de reproducción asistida. Entre los factores responsables de este descenso de la fertilidad humana se han incluido tanto factores socioeconómicos como factores ambientales y de estilo de vida, entre los que se incluye la exposición a factores ambientales y procedentes de la dieta. Aunque su influencia ha sido bastante estudiada en hombres, su impacto sobre la fertilidad femenina se encuentra mucho menos evaluada. Por lo tanto, el objetivo de la presente tesis ha sido evaluar las concentraciones de fitoestrógenos (daidz…

Startup and effects of relative water renewal rate on water quality and growth of rainbow trout (Oncorhynchus mykiss) in a unique RAS research platfo…

2018

Abstract The aquaculture industry is growing fast but facing two major challenges: a shortage of suitable locations for growth and the need to reduce environmental impacts. One solution for both these challenges is inland production through recirculating aquaculture systems (RAS). The RAS technique is rather new, and several practical issues need to be solved. In this study, an experimental platform, consisting of ten individual RAS units, was built for small-scale testing of different RAS designs and operation methods, and two preliminary experiments were conducted. In the first experiment, the capability of different chemical additions (sodium nitrite, ammonium chloride and/or cane sugar)…

Ulcera Da Pressione E Gangrena

2009

Pyrrolo[2,3-h]quinolinones: A new ring system with potent photoantiproliferative activity

2006

A new class of compounds, the pyrrolo[2,3-h]quinolin-2-ones, nitrogen isosters of the angular furocoumarin Angelicin, was synthesized with the aim of obtaining new photochemotherapeutic agents with increased antiproliferative activity and lower undesired toxic effects than the lead compound. Two synthetic pathways were approached to allow the isolation both of the dihydroderivatives 10-17 and of the aromatic ring system 23. Compounds 10-17 showed a remarkable phototoxicity and a great UVA dose dependence reaching IC(50) values at submicromolar level. Intracellular localization of these compounds has been evaluated by means of fluorescence microscopy using tetramethylrhodamine methyl ester a…

Umanizzazione delle cure in odontostomatologia. Una tendenza emergente

2021

OBIETTIVI Scopo del presente lavoro è fornire agli specialisti della salute orale la descrizione delle caratteristiche del colloquio narrativo, inteso come differente dalla tradizionale anamnesi e in grado di rilevare l’universo del paziente, alla base del processo di umaniz-zazione delle cure in odontostomatologia, e illustrare un modello di umanizzazione di cure odontoiatriche. METODI Nell’articolo vengono descritti i punti chiave del processo di umanizzazione delle cure e come tale pratica sia stata integrata nella U.O. di Medicina Orale, A.O.U. P. Giaccone di Palermo per l’approccio al paziente fragile. La comunità scientifica ha già messo in discussione il tradizionale approccio medico…

Occurrence of priority pollutants in WWTP effluents and Mediterranean coastal waters of Spain

2011

A comprehensive study aimed at evaluating the occurrence, significance of concentrations and spatial distribution of priority pollutants (PPs) along the Comunidad Valenciana coastal waters (Spain) was carried out in order to fulfil the European Water Framework Directive (WFD). Additionally, PP concentrations were also analysed in the effluent of 28 WWTPs distributed along the studied area. In coastal waters 36 organic pollutants of the 71 analysed, including 26 PPs were detected although many of them with low frequency of occurrence. Only 13 compounds, which belong to four different classes (VOCs, organochlorinated pesticides, phthalates and tributyltin compounds (TBT)) showed a frequency o…

Connection between temperature, larval production, virulence and geographical distribution of Rhipidocotyle parasites infecting the duck mussel, Anod…

2015

In this thesis, two bucephalid trematode parasites Rhipidocotyle campanula and R. fennica, which use the same first (Anodonta anatina) and second intermediate (Rutilus rutilus) host were studied. The aim was to investigate the effect of temperature on one of the key processes in the transmission of these parasites: 1) the emergence of cercarial larvae from A. anatina over short (1 h) and 2) long (throughout the annual cercarial shedding period, from May to October) time periods as well, as on 3) mussel survival and 4) the seasonal timing of cercarial release. In addition, the aim was to study how the cercarial shedding traits are linked to the 5) geographical occurrence and abundance of the…

Does the freshwater mussel Anodonta anatina remove the fish pathogen Flavobacterium columnare from water?

2021

AbstractGlobal decline of freshwater mussels (Unionoida) is threatening biodiversity and the essential ecosystem services that mussels provide. As filter-feeding organisms, freshwater mussels remove phytoplankton and suspended particles from the water. By filtering bacteria, freshwater mussels also decrease pathogen loads in the water. The objective of this study was to evaluate whether the common freshwater bivalve Anodonta anatina (duck mussel) could remove the bacterial fish pathogen Flavobacterium columnare from the water. Mussels reduced bacteria in both of the two experiments performed, so that the bacterial concentration at the end of the 96-h monitoring in mussel treatments was only…

Relationship between the endangered freshwater pearl mussel Margaritifera margaritifera, its salmonid host and co-infectants

2018

The relationship between the freshwater pearl mussel (hereafter FPM), Margaritifera margaritifera, and its salmonid host — pivotal for the conservation of this endangered bivalve — is characterized by a long parasitic stage (up to 11 months) and excessive host specificity. This thesis focuses on this relationship by experimentally studying the effect of FPM infection on the growth and resistance of salmonid fish and how the infection influences vulnerability of the host to other parasites and diseases, as well as how exposure of the host to other parasites affects vulnerability to FPM. Infection with FPM results in (i) reduced growth of the host, brown trout, during the parasitic period. Gl…

Effect of glochidia infection on growth of fish : freshwater pearl mussel Margaritifera margaritifera and brown trout Salmo trutta

2019

AbstractEffect of freshwater mussels’ (Unionoida) glochidia on the growth of fish host has remained poorly studied. We compared the specific growth rate of the juvenile, PIT-marked brown trout (Salmo trutta) between uninfected controls to those experimentally infected (average initial intensity of infection 8000 fish−1) with Margaritifera margaritifera glochidia, kept in high and low feeding. Growth and mortality of fish were monitored for 10 months. Our hypothesis was that glochidiosis would impair the growth of fish. According to our hypothesis, infected fish gained statistically significantly less weight than the control fish throughout the experiment. A proportional increase in weight o…