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  • 1
    Electronic Resource
    Electronic Resource
    Long-term development of intelligence (IQ) and EEG in 34 children with phenylketonuria treated early (1988)
    Springer
    European journal of pediatrics 147 (1988), S. 361-367 
    Details
    ISSN: 1432-1076
    Keywords: CNS development ; Dietary treatment ; EEG ; IQ ; Phenylketonuria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 34 children with phenylketonuria (PKU) treated early the prognostic value of the age on institution of the diet (within the first 3 months of life) and of the quality of dietary treatment was determined in two different ways: 1) following intelligence closely (IQ) and (2) evaluating the EEG development up to their 12th (n=34) and 15th (n=18) years of life as appropriate. In general, IQ scores were found to be normal from the 4th–15th years of life. In our group of patients there was no effect on the IQ of the timing of diet onset. Children with “strict” dietary control showed a significantly higher IQ than those with “loose” control. One hundred and fifty-four EEGs (10/20 system, awake with eyes closed) were recorded at intervals of 2 years and conventionally evaluated. The development of alpha-activity was found to be normal. Beta-activity was enhanced. Abnormal EEG findings like general slowing and generalized paroxysmal activity (GPA) with or without spikes were more frequent in children with PKU than in controls, with the exception of focal abnormalities. EEG abnormalities increased with advancing age independently of IQ development and showed no relation to either the age at the onset nor the quality of dietary treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00496411
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Phenylalanine hydroxylase genotypes, predicted residual enzyme activity and phenotypic parameters of diagnosis and treatment of phenylketonuria (1996)
    Springer
    European journal of pediatrics 155 (1996), S. S11 
    Details
    ISSN: 1432-1076
    Keywords: Key words Phenylketonuria ; Genotype ; Treatment ; IQ
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The interdependence of the predicted in vitro residual enzyme activity (PRA), as deduced from the complete genotypes of 64 hyperphenylalaninaemic patients, and parameters for diagnosis of hyperphenylalaninaemic disorders, the fluctuation of the phyenlylalanine (Phe) values during treatment, long-term dietary control during treatment, and a parameter for the outcome of therapy (IQ) was investigated by correlation analysis. A highly significant correlation was found between the PRA and diagnostic parameters, as well as the fluctuation of the Phe values during treatment. Significant correlations were also observed between the parameter describing the fluctuation of the Phe values and the IQ, as well as between the quality of dietary control and IQ. The PRA is a valuable tool for the differential diagnosis of hyperphenylalaninaemic disorders and for the prediction of one aspect of the course of the disease which is related to the intellectual outcome of therapy. The quality of dietary control was independent of the genotype, indicating that the outcome of therapy can be successfully manipulated in spite of the genetic make-up.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014222
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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