Anne Romstad

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Purpose: Phenylketonuria (PKU) is an autosomal recessive disorder caused by mutations in the phenylalanine hydroxylase (PAH) gene. There have been more than 400 mutations identified in the PAH gene leading to variable degrees of deficiency in PAH activity, and consequently a wide spectrum of clinical severity. A pilot study was undertaken to examine the(More)
AIM To evaluate the effects of phenylalanine (Phe)-free essential amino acid (AA) tablets enriched in tyrosine and tryptophan on the performance of intellectually disabled adult patients with untreated phenylketonuria (PKU). METHODS Phe-free AA tablets and placebo tablets were administered to 19 untreated PKU subjects on a normal diet for 6 mo in a(More)
Autosomal recessive Parkinson's disease (PD) with early-onset may be caused by mutations in the parkin gene (PARK2). We have ascertained 87 Danish patients with an early-onset form of PD (age at onset < or =40 years, or < or =50 years if family history is positive) in a multicenter study in order to determine the frequency of PARK2 mutations. Analysis of(More)
1. Hirschhorn R. Glycogen storage disease type II (GSD II). In: Scriver CR, Beaudet AL, Sly WS, Valle D, eds. The metabolic and molecular basis of inherited disease, vol 2, 7th ed. New York: McGraw-Hill, 1995:2443–2465. 2. Slonim AE, Coleman RA, McElligot MA, et al. Improvement of muscle function in acid maltase deficiency by high-protein therapy. Neurology(More)
The nucleotide sequences of the second internal transcribed spacer of rDNA were determined for adult worms of Necator americanus originating from Togo (Africa) and Sarawak (Malaysia). The length of the sequences of specimens from Togo (325 bp) were shorter than those from Sarawak (327 bp). There were six fixed genetic differences in the aligned sequences of(More)
A 27 year-old woman presenting with the clinical picture characterized by hypersomnolence, mild psychomotor retardation, dystonia, oculomotor apraxia, weakness, and striking diurnal variations of symptoms was found to be sepiapterin reductase (SR)-deficient by investigations of pterins in cytokine stimulated fibroblasts. There was no detectable SR activity(More)
Oesophagostomiasis in humans due to infection with Oesophagostomum bifurcum (nodular worm) is of major human health significance in northern Togo and Ghana where Necator americanus (human hookworm) also exists at high prevalence. However, very little is known about the transmission patterns of O. bifurcum, partly due to the difficulty in differentiating O.(More)
Mutations in the gene encoding phenylalanine hydroxylase (PAH, EC 1.14.16.1) are associated with various degrees of hyperphenylalaninemia, including classical phenylketonuria (PKU). We examined the PAH gene in a Brazilian PKU family of African origin and identified three missense variants, R252W (c.754C --> T), K274E (c.820A --> G), and I318T (c.953T -->(More)
OBJECTIVE To examine the relationship of phenylalanine hydroxylase (PAH) genotypes to biochemical phenotype and cognitive development in maternal phenylketonuria (PKU). METHODOLOGY PAH gene mutations were examined in 222 hyperphenylalaninemic females enrolled in the Maternal PKU Collaborative Study (MPKUCS). A total of 84 different mutations were(More)
BACKGROUND Deficiency of 6-pyruvoyltetrahydropterin synthase (PTPS) is a recessively inherited disorder that leads to depletion of 5,6,7, 8-tetrahydrobiopterin, the obligatory cofactor for hydroxylation of phenylalanine, tyrosine, and tryptophan. A marker for neonatal detection of PTPS deficiency is hyperphenylalaninemia (HPA). Molecular analysis would(More)