Abstract:
:Genetic disorders of purine and pyrimidine (PP) metabolism are under-reported and infrequently mentioned in the general literature, as well as in reviews dedicated to other inborn errors of metabolism. Owing to limited awareness, relatively recent recognition, as well as considerable phenotypic variation, these disorders may often be misdiagnosed or remain undiagnosed. Disorders that arise as a result of dysfunction in PP metabolism represent some of the most challenging diagnostic problems in medicine. In addition to their low prevalence rates, they also present with extremely variable signs and symptoms. They may affect any system in a variety of manners, and often mimic other, more recognizable disorders. The diagnostic problem is compounded by the fact that some biochemically affected patients are symptom-free. Rapidly evolving laboratory techniques such as high-performance liquid chromatography coupled to tandem mass spectrometry are now well established as the preferred method for detection for these defects, but currently the most important step in diagnosis consists of suspecting the disorder. Diagnosis is vital because genetic counselling can be provided and, in some cases, specific treatment can be offered that may slow or even reverse clinical symptoms. If undiagnosed, these disorders can be devastating to patients and their families, resulting in early death or institutionalization for the rest of patient's life. This article describes the current state of knowledge about inborn errors of purine and pyrimidine metabolism, focusing on the varying clinical presentations, the laboratory findings and discusses indications for selective screening for these disorders.
journal_name
J Inherit Metab Disjournal_title
Journal of inherited metabolic diseaseauthors
Jurecka Adoi
10.1007/s10545-009-1094-zsubject
Has Abstractpub_date
2009-04-01 00:00:00pages
247-63issue
2eissn
0141-8955issn
1573-2665journal_volume
32pub_type
杂志文章,评审abstract::Concentrations of free dolichol, total non-phosphorylated dolichol, and total phosphorylated dolichol were measured in autopsy specimens of brain and liver from ceroid-lipofuscinosis (CL) and control cases. Levels of non-phosphorylated dolichol, mainly as free dolichol, were increased approximately two-fold in late-in...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01805431
更新日期:1985-01-01 00:00:00
abstract::Patients with MPS II often present with limitations to functional mobility. With the advent of enzyme replacement therapy (ERT), robust assessment tools are important to assess response to treatment. The aim of this study was to see if the GAITRite™ system (electronic pressure sensitive walkway) could identify any cha...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-009-1103-2
更新日期:2009-12-01 00:00:00
abstract::This first detailed report of a female patient with functional methionine synthase deficiency due to the cblE defect describes treatment with several vitamins and cofactors and clinical progress for 17 years. Before treatment, major findings were microcephaly, psychomotor retardation, episodic reduced consciousness, m...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1005372730310
更新日期:1997-11-01 00:00:00
abstract::We are constantly exposed to sources of agents that directly damage the genetic material. This exposure comes from environmental sources but also from within our own organisms. DNA damage occurs at a high frequency due to metabolic processes and environmental factors such as various exposures and the intake of food an...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1023/a:1015681929316
更新日期:2002-05-01 00:00:00
abstract::Phosphoglucomutase 1 (PGM1) deficiency is a rare genetic disorder that affects glycogen metabolism, glycolysis, and protein glycosylation. Previously known as GSD XIV, it was recently reclassified as a congenital disorder of glycosylation, PGM1-CDG. PGM1-CDG usually manifests as a multisystem disease. Most patients pr...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1002/jimd.12286
更新日期:2021-01-01 00:00:00
abstract::The inheritance of Crigler-Najjar type II disease is still contested. Autosomal dominant transmission with incomplete penetrance and autosomal recessive transmission have been proposed. We had the opportunity to study the hepatic activity of bilirubin uridinediphosphate glucuronyltransferase in parents whose first chi...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01799221
更新日期:1989-01-01 00:00:00
abstract::We report a new constellation of clinical features consisting of hypermanganesaemia, liver cirrhosis, an extrapyramidal motor disorder and polycythaemia in a 12 year-old girl born to consanguineous parents. Blood manganese levels were >3000 nmol/L (normal range <320 nmol/L) and MRI revealed signal abnormalities of the...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-008-0813-1
更新日期:2008-04-01 00:00:00
abstract::The content of coenzyme Q(10) (CoQ(10)) was examined in skin fibroblasts of 10 patients with mevalonic aciduria (MVA) and of 22 patients with methylmalonic aciduria (MMA). Patients with these inborn errors of metabolism are thought to be at risk for CoQ(10) depletion either by direct inhibition of the proximal pathway...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-009-1150-8
更新日期:2009-08-01 00:00:00
abstract::Succinic semialdehyde dehydrogenase (SSAD) is an enzyme involved in the turnover of the neurotransmitter 4-aminobutyrate (GABA). Deficiency of SSAD results in developmental delay, ataxia, seizures and 4-hydroxybutyric aciduria. We have developed a simple fluorimetric assay for the enzyme and applied it to measurement ...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF00711509
更新日期:1993-01-01 00:00:00
abstract::Current understanding of the means by which the trace metals copper, iron, and zinc are transported and stored in the human body is reviewed. Although metal-related inherited metabolic diseases manifest themselves as deficiencies in metalloenzymes, these deficiencies in fact arise from disturbances in the absorption/r...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01811317
更新日期:1983-01-01 00:00:00
abstract::Mitochondrial diseases are usually severe and progressive conditions; however, there are rare forms that show remarkable spontaneous recoveries. Two homoplasmic mitochondrial tRNA mutations (m.14674T>C/G in mt-tRNA(Glu)) have been reported to cause severe infantile mitochondrial myopathy in the first months of life. I...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/s10545-014-9784-6
更新日期:2015-05-01 00:00:00
abstract::Glutaric aciduria type I is an inborn error of organic acid metabolism that demonstrates a particular temporal vulnerability (acute encephalopathic episodes in infancy) and a spatial vulnerability (acute striatal necrosis, focused on the putamen). Excitotoxic mechanisms involving 3-hydroxyglutaric acid as the major ne...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1023/B:BOLI.0000045767.42193.97
更新日期:2004-01-01 00:00:00
abstract::Rapid diagnosis and early specific treatment of metabolic epilepsies due to inborn errors of metabolism (IEMs) is crucial to avoid irreversible sequalae. Nowadays, besides the profile analysis of amino- and organic acids, a range of additional targeted assays is used for the selective screening of those diseases. This...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1002/jimd.12244
更新日期:2020-09-01 00:00:00
abstract::A biochemical variant of argininosuccinate lyase deficiency, found in five individuals, is introduced. In comparison to classical patients, the variant cases of argininosuccinate lyase deficiency were characterized by residual enzyme activity as measured by the incorporation of [14C]citrulline into proteins. The five ...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1020108002877
更新日期:2002-09-01 00:00:00
abstract:OBJECTIVE:Current available evidence on long-term effectiveness of enzyme replacement therapy (ERT) for Fabry disease is limited. More insight is needed whether ERT effectiveness differs in patients with and without baseline end-organ damage. DESIGN:Through a systematic review, untreated and ERT treated males and fema...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s10545-014-9677-8
更新日期:2014-05-01 00:00:00
abstract::Mucopolysaccharidosis type IVA (MPS IVA) or Morquio syndrome is a multisystem disorder caused by galactosamine-6-sulfatase deficiency. Skeletal manifestations, including short stature, skeletal dysplasia, cervical instability, and joint destruction, are known to be associated with this condition. Due to the severity o...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/s10545-012-9459-0
更新日期:2013-03-01 00:00:00
abstract:: ...
journal_title:Journal of inherited metabolic disease
pub_type: 社论
doi:10.1007/s10545-018-00250-0
更新日期:2018-11-01 00:00:00
abstract::Fabry disease (McKusick 301500) is an X-linked lysosomal storage disorder due to deficient alpha-galactosidase A activity, which leads to accumulation of glycosphingolipids, especially in vascular smooth-muscle and endothelial cells. The effect of this accumulation on peripheral and cardiac vascular function is poorly...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-005-0563-2
更新日期:2005-01-01 00:00:00
abstract::A sensitive and selective analytical technique is described for the determination of N-acetylaspartic acid in body fluids using stable isotope dilution in combination with positive chemical ionization mass spectrometry with selected ion monitoring. Control mean and ranges have been established: in urine 19.5 and 6.6-3...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01799929
更新日期:1991-01-01 00:00:00
abstract::Cholesterol is known to be a significant constituent of the central nervous system. It also plays an important role in developmental pathways to form the human brain, such as the Sonic Hedgehog pathway. Disturbances in the formation of cholesterol may therefore be expected to cause brain malformations and brain dysfun...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/s10545-005-7055-2
更新日期:2005-01-01 00:00:00
abstract::Cloning of the gene defective in the X-linked neurodegenerative disorder Menkes disease led to a cascade of new findings. Besides giving a better understanding of the intracellular copper homeostasis, these findings had important consequences from a clinical point of view. Today the underlying genetic defect has been ...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1023/a:1005479307906
更新日期:1998-08-01 00:00:00
abstract::Cystinosis is an autosomal recessive storage disease due to impaired transport of cystine out of lysosomes. Since the accumulation of intracellular cystine affects all organs and tissues, the management of cystinosis requires a specialized multidisciplinary team consisting of pediatricians, nephrologists, nutritionist...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1002/jimd.12134
更新日期:2019-09-01 00:00:00
abstract::Carnitine palmitoyltransferase type II (CPT II) deficiency has three basic phenotypes, late-onset muscular (mild), infantile/juvenile hepatic (intermediate) and severe neonatal. We have measured fatty acid oxidation and CPT II activity and performed mutation studies in 24 symptomatic patients representing the full cli...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1025947930752
更新日期:2003-01-01 00:00:00
abstract::Plasmalogens are a special class of ether-phospholipids, best recognized by their vinyl-ether bond at the sn-1 position of the glycerobackbone and by the observation that their deficiency causes rhizomelic chondrodysplasia punctata (RCDP). The complex plasmalogen biosynthetic pathway involves multiple enzymatic steps ...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/s10545-014-9795-3
更新日期:2015-01-01 00:00:00
abstract::Congenital disorders of glycosylation (CDG) are a rapidly growing family comprising >100 genetic diseases. Some 25 CDG are pure O-glycosylation defects. Even among this CDG subgroup, phenotypic diversity is broad, ranging from mild to severe poly-organ/system dysfunction. Ophthalmic manifestations are present in 60% o...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1002/jimd.12025
更新日期:2019-01-01 00:00:00
abstract::A survey is given of literature reports on the effect of performance in offspring from 26 maternal PKU pregnancies treated prior to conception. The survey includes two women who were referred to us for genetic counselling because they had both given birth to microcephalic, mentally retarded children. The women were di...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01799522
更新日期:1990-01-01 00:00:00
abstract:AIM:This study reports the first evaluation of therapeutic response in Romanian patients with Gaucher disease type I, after therapy with Cerezyme recently became available in our country. PATIENTS AND METHODS:24 patients (11-50 years) received Cerezyme 20-60 U/kg every two weeks for at least 18 months. Haemoglobin, pl...
journal_title:Journal of inherited metabolic disease
pub_type: 临床试验,杂志文章
doi:10.1007/s10545-007-0621-z
更新日期:2007-10-01 00:00:00
abstract::Glutaric aciduria type 1 (GA1) is an inborn error of lysine degradation characterized by acute encephalopathy that is caused by toxic accumulation of lysine degradation intermediates. We investigated the efficacy of substrate reduction through inhibition of 2-aminoadipic semialdehyde synthase (AASS), an enzyme upstrea...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1002/jimd.12276
更新日期:2020-11-01 00:00:00
abstract::Glycogen storage disease type Ib (GSD-Ib) is caused by a deficiency in the ubiquitously expressed glucose-6-phosphate (G6P) transporter (G6PT or SLC37A4). The primary function of G6PT is to translocate G6P from the cytoplasm into the lumen of the endoplasmic reticulum (ER). Inside the ER, G6P is hydrolyzed to glucose ...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/s10545-018-0180-5
更新日期:2018-11-01 00:00:00
abstract::The implementation of whole-exome sequencing in clinical diagnostics has generated a need for functional evaluation of genetic variants. In the field of inborn errors of metabolism (IEM), a diverse spectrum of targeted biochemical assays is employed to analyze a limited amount of metabolites. We now present a single-p...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-017-0131-6
更新日期:2018-05-01 00:00:00