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Gepubliceerd in: Tijdschrift voor Kindergeneeskunde 5/2006

01-10-2006 | Artikelen

X-gebonden mentale retardatie door creatine transporter defect

Auteurs: S. W. K. de Kort, S. A. de Man, A. J. M. Hoogeboom, P. J. W. Pouwels, M. S. van der Knaap, G. M. S. Mancini, G. S. Salomons

Gepubliceerd in: Tijdschrift voor Kindergeneeskunde | Uitgave 5/2006

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Samenvatting

Twee jongens van 4 en 8 jaar oud bezochten de kinderarts in verband met psychomotore en ernstige taal-/spraakontwikkelingsachterstand. Tevens was sprake van groeiachterstand en een geringe spiermassa. In de urine werd een verhoogde creatine/creatinine-ratio gevonden. Bij dna-analyse van het creatine transporter-gen slc 6 a 8, gelegen op het X-chromosoom, werd bij elke patiënt een verschillende mutatie gevonden. Creatine transporter defect is een recent ontdekte oorzaak van X-gebonden mentale retardatie die relatief vaak lijkt voor te komen. De aandoening kan zich van andere oorzaken van niet-syndromale X-gebonden mentale retardatie onderscheiden door het neuropsychologisch profiel: mentale retardatie, adhd, semantisch-pragmatische taalstoornis en orale dyspraxie. De diagnose wordt gesteld door een combinatie van ten minste twee van de volgende tests: bepaling van de creatine/creatinine-ratio in urine, protonmagnetische resonantiespectroscopie (1 h-mrs) van de hersenen, dna-analyse van slc 6 a 8 of een functionele creatine-opnametest in gekweekte fibroblasten. Bij iedere mannelijke patiënt met mentale retardatie met een spraak/taaldefect en/of groeiachterstand moet aan een creatine transporter defect gedacht worden.
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Metagegevens
Titel
X-gebonden mentale retardatie door creatine transporter defect
Auteurs
S. W. K. de Kort
S. A. de Man
A. J. M. Hoogeboom
P. J. W. Pouwels
M. S. van der Knaap
G. M. S. Mancini
G. S. Salomons
Publicatiedatum
01-10-2006
Uitgeverij
Bohn Stafleu van Loghum
Gepubliceerd in
Tijdschrift voor Kindergeneeskunde / Uitgave 5/2006
Print ISSN: 0376-7442
Elektronisch ISSN: 1875-6840
DOI
https://doi.org/10.1007/BF03061633

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