RESUMEN
Apples cv. 'Jonagold' of the same quality were collected from four orchards in three European countries. The orchards differed in terms of longitude, latitude and microclimate. The apples were stored in controlled atmosphere storage for six months. Both after harvest and after storage the apples were compared in terms of physical and chemical properties. Differences in firmness, titratable acidity, total soluble solids, mass varied not >11%. Storability was little affected by harvest location. The sum of polyphenols was more strongly influenced by storage than by orchard location. The strongest degradation of flavonols after storage was in apples grown in the most southern region of harvest (Italy). The content of (+)- catechin and (-)-epicatechin depended on harvest location and its strong increase resulted in higher content of procyanidins and flavanols after storage. Changes in individual polyphenols were significant after storage and depended on harvest location.
Asunto(s)
Antioxidantes/análisis , Malus/química , Fenoles/análisis , Catequina/análisis , Europa (Continente) , Flavonoles/análisis , Almacenamiento de Alimentos/métodos , Frutas/química , Polifenoles/análisisRESUMEN
A membrane plasma fractionation (MPS) technique is applied in order to obtain selective removal of pathological plasma components from the extracorporeal circuit. An effective plasma fractionation procedure should be characterized by the highest possible removal of the pathological plasma components and, equally as important, the lowest unwanted protein losses caused mainly by adsorption to the membrane structure. In order to obtain a higher efficiency of the MPS procedure (high selectivity between removal of pathological plasma components and unwanted losses mainly represented by albumin) several methods such as thermofiltration, application of pulsate flow at the end of secondary filter, etc. have been developed. Clinical verification of these methods led to some improvement in MPS procedure but these results did not seem to be optimal. The main objective of this paper is to present a new two-stage membrane system utilizing a high flow recirculation circuit developed particularly, but not only, for effective removal of low-density lipoprotein cholesterol. The designed and developed system has been tested in vitro using several different plasma fractionation membranes. The results obtained indicated the importance of the membrane structure and membrane material on the efficiency of the tested plasma fractionation procedure. It was also found that it is possible to obtain negligible protein losses for some selected membrane structures applied in the assessed system. Based on preliminary results, it seems that the new two-stage membrane system proposed could be characterized by a very low range of unwanted protein losses leading to high effectiveness of the plasma fractionation procedure.
Asunto(s)
LDL-Colesterol/sangre , Circulación Extracorporea/métodos , Membranas Artificiales , Materiales Biocompatibles , LDL-Colesterol/aislamiento & purificación , Diseño de Equipo , Circulación Extracorporea/instrumentación , Humanos , UltrafiltraciónRESUMEN
The authors present four cases of familial exudative vitreoretinopathy observed in the course of the last years. Our cases appeared sporadically in families and showed a variable picture and clinical course. The accepted differential criterions and difficulties in differentiation are discussed.
Asunto(s)
Degeneración Retiniana/genética , Desprendimiento de Retina/genética , Vasos Retinianos/anomalías , Cuerpo Vítreo , Adolescente , Adulto , Exudados y Transudados , Oftalmopatías/complicaciones , Oftalmopatías/diagnóstico , Oftalmopatías/genética , Femenino , Angiografía con Fluoresceína , Humanos , Masculino , Degeneración Retiniana/complicaciones , Degeneración Retiniana/diagnóstico , Desprendimiento de Retina/complicaciones , Desprendimiento de Retina/diagnóstico , SíndromeAsunto(s)
Atrofia Óptica/genética , Adolescente , Adulto , Humanos , Masculino , Atrofia Óptica/diagnósticoAsunto(s)
Coloboma/fisiopatología , Disco Óptico/anomalías , Retina/fisiopatología , Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Masculino , Agudeza VisualAsunto(s)
Coloboma/fisiopatología , Disco Óptico/anomalías , Retina/fisiopatología , Adolescente , Adulto , Niño , Preescolar , Coloboma/diagnóstico , Coloboma/etiología , Femenino , Humanos , Masculino , Agudeza VisualRESUMEN
Problems of retinal detachment in retrolental fibroplasia (RLF) based on observations during 10 years of 92 premature children treated with supplemental oxygen in incubators are discussed. Two essential types of retinal detachment can be distinguished: the oedematous type in the stages III-V of the active phase of RLF and the rhegmatogenous type of cicatricial RLF. In our material 2 cases of oedematous detachment, which regressed spontaneously, were found. The case of a 10-year-old boy with total retinal detachment in cicatricial RLF, which was diagnosed too late, is presented. Since good results have been described after scleral buckling procedures in cases diagnosed early enough, all children with RLF should remain under steady control.
Asunto(s)
Desprendimiento de Retina/diagnóstico , Retinopatía de la Prematuridad/complicaciones , Adolescente , Adulto , Niño , Preescolar , Femenino , Angiografía con Fluoresceína , Estudios de Seguimiento , Humanos , Lactante , Recién Nacido , Enfermedades del Prematuro/terapia , Masculino , Terapia por Inhalación de Oxígeno/efectos adversosAsunto(s)
Ceguera/congénito , Ceguera/diagnóstico , Ceguera/etiología , Preescolar , Femenino , Humanos , Lactante , Masculino , Enfermedades de la Retina/diagnóstico , SíndromeRESUMEN
1--8 years after successful surgery, for retinal detachment 47 patients (48 eyes) were included in the study. By using Goldmann's static perimetry macular and retinal periphery sensitivities were determined (in 2 meridians) as compared with the healthy eye. It was established that the changes in static perimetry run a course parallel to the disturbances in the perception of the Haidinger phenomenon and poor performance at the Amsler tests. The longer the period of macular detachment was, the greater were the changes in its sensitivity curve despite good visual acuity. A distinct lowering in sensitivity occurs also outside the macula, all over the area in which retinal detachment had occurred.