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15 үр дүн
Pterins analysis in amniotic fluid for the prenatal diagnosis of GTP cyclohydrolase deficiency.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Hyperphenylalaninaemia due to tetrahydrobiopterin deficiency is a group of rare and severe diseases. Prenatal diagnosis of dihydropteridine reductase and pyruvoyltetrahydropterin synthetase deficiencies can be achieved by enzyme assay in cultured fluid cells and/or fetal blood. In contrast, prenatal
Normal pterin values in urine and serum in neonates and its age-related change throughout life.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Tetrahydrobiopterin (BH4) deficiency has been described as a form of hyperphenylalaninaemia in which severe neurological symptoms develop despite early treatment with low phenylalanine diet. In recent years it has become apparent that biopterin deficiency may be caused by a defect either of
R208X mutation in CLN2 gene associated with reduced cerebrospinal fluid pterins in a girl with classic late infantile neuronal ceroid lipofuscinosis.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Clinical picture of neuronal ceroid lipofuscinosis with late infantile onset (LINCL) is characterized by myoclonic seizures and psychomotor regression. We present a case of classic LINCL and reduced cerebrospinal fluid (CSF) pterins in a girl of normal psychomotor development and born to
Biopterin-dependent hyperphenylalaninemia due to deficiency of 6-pyruvoyl tetrahydropterin synthase.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
We describe the clinical, neurologic, and biochemical findings in 10 patients with 6-pyruvoyl tetrahydropterin synthase (6-PTS) deficiency from seven families, all of whom originate from one large tribe in Saudi Arabia. This deficiency presents with severe, early onset of failure to thrive,
Clinical role of pteridine therapy in tetrahydrobiopterin deficiency.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
In most patients with deficiency of tetrahydrobiopterin (BH4) continuous administration of BH4 or of a synthetic analogue such as 6-methyltetrahydropterin (6-MPH4) lowers plasma phenylalanine concentrations to the therapeutic range. The effective dose of BH4 varies from 1 to 2 mg kg-1 daily in
Molecular characterization of Drosophila melanogaster dihydropteridine reductase.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Dihydropteridine reductase (DHPR) catalyzes the NAD(P)H-mediated reduction of quinonoid dihydropteridine as a part of pterin-dependent aromatic amino acid hydroxylation. We isolated a fragment of Drosophila DHPR gene by PCR using degenerate primers. By screening a cDNA library, we obtained
The phenotypic spectrum of paediatric neurotransmitter diseases and infantile parkinsonism.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Paediatric neurotransmitter diseases are a group of inherited disorders attributable to a disturbance of neurotransmitter metabolism. The monoamines, catecholamines and serotonin, also called biogenic amines, are neurotransmitters with multiple roles including psychomotor function, hormone
Intracranial calcification in dihydropteridine reductase deficiency.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
We described the clinical status and computerized tomographic findings of two patients with tetrahydrobiopterin (BH4) deficiency due to impaired BH4 regeneration. In addition to an unfavorable course, cranial computerized tomography scans demonstrated severe cortical and subcortical atrophy and
[Biopterin and child neurologic disease].
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Tetrahydrobiopterin (BH4) deficiencies are disorders affecting phenylalanine metabolism in the liver and neurotransmitter biosynthesis in the brain. BH4 is the essential cofactor in the enzymatic hydroxylation of 3 aromatic amino acids (phenylalanine, tyrosine, and tryptophan). BH4 is synthesized
Report on a new patient with combined deficiencies of sulphite oxidase and xanthine dehydrogenase due to molybdenum cofactor deficiency.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
A newborn infant exhibiting seizures and spastic tetraparesis at the age of 1 week was shown to excrete excessive quantities of sulphite, taurine, S-sulphocysteine and thiosulphate, characteristic of sulphite oxidase deficiency. In addition, increased renal excretion of xanthine and hypoxanthine
Hyperphenylalaninaemia caused by defects in biopterin metabolism.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
The hepatic phenylalanine hydroxylating system consists of three essential components, phenylalanine hydroxylase, dihydropteridine reductase and the non-protein coenzyme, tetrahydrobiopterin. The reductase and the pterin coenzyme are also essential components of the tyrosine and tryptophan
Cerebral folate deficiency syndromes in childhood: clinical, analytical, and etiologic aspects.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
BACKGROUND
Cerebral folate deficiency may be amenable to therapeutic supplementation. Diverse metabolic pathways and unrelated processes can lead to cerebrospinal fluid 5-methyltetrahydrofolate (5-MTHF) depletion, the hallmark of cerebral folate deficiency.
OBJECTIVE
To analyze cerebral folate
Four Years of Diagnostic Challenges with Tetrahydrobiopterin Deficiencies in Iranian Patients.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Hyperphenylalaninemia (HPA) is a condition caused by tetrahydrobiopterin (BH4) and phenylalanine hydroxylase (PAH) deficiencies. It is essential that differential diagnosis be conducted to distinguish these two causes of HPA, because BH4 deficiency is a more severe disease involving progressive
Disorders of biopterin metabolism.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Defects in the metabolism or regeneration of tetrahydrobiopterin (BH4) were initially discovered in patients with hyperphenylalaninaemia who had progressive neurological deterioration despite optimal metabolic control (malignant hyperphenylalaninaemia). BH4 is an essential cofactor not only for
Disorders of tetrahydrobiopterin metabolism and their treatment.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Tetrahydrobiopterin (BH4) deficiencies are disorders affecting phenylalanine metabolism in liver and neurotransmitters biosynthesis in brain. BH4 is the essential cofactor in the enzymatic hydroxylation of 3 aromatic amino acids (phenylalanine, tyrosine, and tryptophan). BH4 is synthesized from
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