Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 116 (1974), S. 95-114 
    ISSN: 1432-1076
    Keywords: Non-ketotic hyperglycinaemia ; Dietetic treatment ; Histologic changes of brain ; Liver
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird über eine Patientin mit einer nichtketotischen Hyperglycinämie berichtet, die 2 Jahre lang mit einer vollsynthetischen Kost aus einem Aminosäurengemisch, Mineralien, Glucose, Fett und Vitaminzusätzen behandelt wurde. Die diätetische Behandlung sowie Zusatz von Natrium-Benzoat zur Nahrung führten nur kurzfristig zu einem Absinken der Plasma-Glycin-Konzentrationen. Nach Anreicherung der Nahrung mit L-Methionin in einer Dosierung von 300 mg/kg KG/die zeigten sich zwar deutlich niedrigere Glycinspiegel, gleichzeitig kam es aber zu einer exzessiven Hypermethioninämie. L-Methionin-Gabe in Dosierungen von 150–200 mg/kg KG hatten keinen Einfluß auf die Höhe des Plasma-Glycin-Spiegels. Die körperliche Entwicklung des Kindes unter Diätbehandlung war altersentsprechend. Ein Einfluß auf die geistige Entwicklung wurde nicht bemerkt, es bestand aber bereits zu Beginn der Behandlung das Bild einer Decrebrierung. Pathologisch-histologisch zeigten sich Veränderungen des ZNS in Form von Markscheidenreifungshemmung und einer spongiösen Degeneration der weißen Substanz in Großhirn, Kleinhirn und Rückenmark sowie Einlagerungen von doppeltbrechenden Kristallen. In der grauen Substanz waren keine groben Alterationen nachweisbar. Im Bereich des peripheren Nervensystems fanden sich keine Markscheidenausfälle und keine doppeltbrechenden Kristalle. Die Leber zeigte eine leichte Vacuolisierung der Leberzellen und eine starke Einlagerung von doppeltbrechenden Kristallen in Parenchymzellen und Makrophagen.
    Notes: Abstract A girl with non-ketotic hyperglycinaemia was treated for 2 years with a synthetic diet consisting of a glycine- and serine-free amino-acid mixture, glucose, fat, minerals, and vitamins. The addition of sodium benzoate to this diet resulted in only a temporary decrease of the plasma glycine concentration. Addition of 300 mg methionine/kg/day led to a marked reduction of glycine in the plasma but also to an excessive increase of the methionine plasma concentration. L-methionine at a lower dose did not influence the plasma glycine level. During the dietary treatment an almost normal gain of body weight was observed, though the psychomotor development was not influenced. Post mortem the following changes were noted: 1. reduced myelination of the white matter; 2. spongiform alterations of the white matter of the cerebrum, the cerebellum, and the spinal cord; 3. inclusions of birefringent crystals in liver and brain. The grey matter of the cerebrum did not show any marked alterations. In peripheral nerves no areas of demyelination or inclusions of crystals were found.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 157 (1998), S. 824-830 
    ISSN: 1432-1076
    Keywords: Key words Intelligence ; Neurology ; Neuropsychology ; Phenylketonuria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Due to the observation of severe neurological symptoms in single patients as well as brain imaging, neuropsychological and neurophysiological abnormalities, the long-term prognosis of treated phenylketonuria is still under discussion. We investigated the neurological outcome of 57 (24 male, 33 female) patients with phenylketonuria (diet onset 〈3 months) at a mean age of 23.6 (17–33) years in comparison to control subjects. Methods used were a clinical-neurological examination, tests for fine motor abilities, IQ test (WAIS-R), a neuropsychological attention task and MRI (30 patients only). Tremor was increased in the patients (28%) compared to controls (15%). Fine motor abilities were significantly reduced in three areas: hand-wrist steadiness, finger-hand dexterity and hand-wrist speed. Tremor as well as reduced fine motor skills were not associated with treatment-related variables, e.g. diet onset, strictness of biochemical control or amount of MRI white matter change. IQ was lower in patients (mean 97.6) compared to matched control subjects (mean 105.5). IQ at 12 years was correlated with biochemical control from birth up to the age of 12 and remained stable up to adult age, independent of biochemical control after 12 years of age. In contrast to the other outcome parameters, the performance in a neuropsychological attention task was influenced by the concurrent plasma phenylalanine concentration. Specific late-onset neurological impairment was not identified in this sample of early-treated adults with phenylketonuria. Conclusion Careful neurological investigation revealed subtle symptoms of brain damage even after early-initiated treatment in adult patients with phenylketonuria. At present it cannot be excluded that further neurological deterioration could emerge later in life. Thus, patients with phenylketonuria – either on or off diet – should be monitored throughout life.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-1076
    Keywords: Selenium ; Intake ; Children ; Phenylketonuria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 20 healthy infants and children, 5–20 months old, the Se intake was estimated by analysing food samples by instrumental neutron activation analysis. The intake was calculated by weighing the portions offered and actually consumed. The median Se content of the food amounted to 27 ng/g wet weight (gww) and median daily Se intake to 33.5 μg. The Se intake was not equally distributed over the day. About 50% of the daily Se intake was derived from the supper. The main Se sources (41%) for young children were cereal paps. Commercially, available meals (30 ng/g) contained less Se than home-made ones (50 ng/g). In nine dietetically treated patients with phenylketonuria the median Se intake amounted only to 6.9 μg/day corresponding to a mean Se content of the diet of 7.9 ng/g. The main Se source in the diet was vegetables (36.3%) and 20% derived from their protein supplements. The Se intake of young children, healthy or dietetically treated, cannot be calculated accurately from tables but must be estimated by measuring the Se content of the local food because cereals and vegetables-the main Se sources-exhibit great regional variations.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1432-1076
    Keywords: Key words Protein quality ; Dietetic treatment ; Phenylketonuria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The protein quality of the diets of phenylketonuria (PKU) children of different ages (3 months, 10 months, 3 years, 8 years, 12 years, 16 years) with low or high phenylalanine (Phe) tolerance was assessed according to the recommendations of the FAO/WHO consultation group [13]. The amount of each essential amino acid (AA) per gram dietary protein was calculated and compared to the reference. The resultant amino acid score (AAS) indicated a limited to inadequate biological protein quality of the diets in 3-month-old infants (2.2 g protein/kg body weight/day) and 10-month-old infants (2.0 g protein/kg body weight/day) with a “high” Phe tolerance. In all other age groups the AAS was 〉 100%. However remarkable imbalances in the AA pattern were apparent. Beginning with the age of 3 years (1.7 g protein/kg body weight/day) the intake of the AA lysine and isoleucine was three or two times higher than recommended. At the age of 8 years (1.4 g protein/kg body weight/day) the intake of three AA (valine, isoleucine, lysine) was – related to the WHO recommendations – 217%, 229% and 291%. Similar results could be found in the age groups of 12 years (1.1 g protein/kg body weight/day) and 16 years (0.9 g protein/kg body weight/day), respectively. These calculations might help to reconsider the composition of the AA mixtures used in the dietetic treatment of PKU patients.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...