Abstract:
:Tetrahydrobiopterin (BH4) is an essential cofactor for the aromatic amino acid hydroxylases, alkylglycerol monooxygenase, and nitric oxide synthases (NOS). Inborn errors of BH4 metabolism lead to severe insufficiency of brain monoamine neurotransmitters while augmentation of BH4 by supplementation or stimulation of its biosynthesis is thought to ameliorate endothelial NOS (eNOS) dysfunction, to protect from (cardio-) vascular disease and/or prevent obesity and development of the metabolic syndrome. We have previously reported that homozygous knock-out mice for the 6-pyruvolytetrahydropterin synthase (PTPS; Pts-ko/ko) mice with no BH4 biosynthesis die after birth. Here we generated a Pts-knock-in (Pts-ki) allele expressing the murine PTPS-p.Arg15Cys with low residual activity (15% of wild-type in vitro) and investigated homozygous (Pts-ki/ki) and compound heterozygous (Pts-ki/ko) mutants. All mice showed normal viability and depending on the severity of the Pts alleles exhibited up to 90% reduction of PTPS activity concomitant with neopterin elevation and mild reduction of total biopterin while blood L-phenylalanine and brain monoamine neurotransmitters were unaffected. Yet, adult mutant mice with compromised PTPS activity (i.e., Pts-ki/ko, Pts-ki/ki or Pts-ko/wt) had increased body weight and elevated intra-abdominal fat. Comprehensive phenotyping of Pts-ki/ki mice revealed alterations in energy metabolism with proportionally higher fat content but lower lean mass, and increased blood glucose and cholesterol. Transcriptome analysis indicated changes in glucose and lipid metabolism. Furthermore, differentially expressed genes associated with obesity, weight loss, hepatic steatosis, and insulin sensitivity were consistent with the observed phenotypic alterations. We conclude that reduced PTPS activity concomitant with mildly compromised BH4-biosynthesis leads to abnormal body fat distribution and abdominal obesity at least in mice. This study associates a novel single gene mutation with monogenic forms of obesity.
journal_name
J Inherit Metab Disjournal_title
Journal of inherited metabolic diseaseauthors
Korner G,Scherer T,Adamsen D,Rebuffat A,Crabtree M,Rassi A,Scavelli R,Homma D,Ledermann B,Konrad D,Ichinose H,Wolfrum C,Horsch M,Rathkolb B,Klingenspor M,Beckers J,Wolf E,Gailus-Durner V,Fuchs H,Hrabě de Angelis M,doi
10.1007/s10545-015-9909-6subject
Has Abstractpub_date
2016-03-01 00:00:00pages
309-19issue
2eissn
0141-8955issn
1573-2665pii
10.1007/s10545-015-9909-6journal_volume
39pub_type
杂志文章abstract::Fabry disease is an X-linked inherited lysosomal storage disorder caused by an inborn deficiency of the enzyme α-galactosidase A. Enzyme replacement therapy (ERT) with agalsidase alpha or beta isozymes is an effective treatment. Cross-reactivity of immunoglobulin G (IgG) antibodies with agalsidase alpha and beta has b...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-010-9136-0
更新日期:2010-12-01 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::Recent studies have identified a group of patients with cytochrome oxidase (COX) deficiency presenting in infancy associated with a deficiency of mtDNA in muscle or other affected tissue (Moraes et al 1991). We used a novel approach to compare the level of mitochondrial (mtDNA) compared to nuclear DNA in skeletal musc...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF00711367
更新日期:1995-01-01 00:00:00
abstract::We examined the value of the fasting plasma phenylalanine/tyrosine ratio obtained in an ordinary clinical setting for assessing the probability of being a heterozygote for hyperphenylalaninaemia. This biochemical test was found to be of little value in those with a high (66%) prior risk of heterozygosity, because it c...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF00711323
更新日期:1993-01-01 00:00:00
abstract:BACKGROUND:Farber disease (FD) is a rare, lysosomal storage disorder caused by deficient acid ceramidase activity. FD has long been considered a fatal disorder with death in the first three decades of life resulting either from respiratory insufficiency as a consequence of airway involvement or from progressive neurode...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1002/jimd.12043
更新日期:2019-03-01 00:00:00
abstract::The congenital disorders of glycosylation (CDG) are inborn errors of metabolism with a great genetic heterogeneity. Most CDG are caused by defects in the N-glycan biosynthesis, leading to multisystem phenotypes. However, the occurrence of tissue-restricted clinical symptoms in the various defects in dolichol-phosphate...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1002/jimd.12095
更新日期:2019-09-01 00:00:00
abstract::Even early-treated phenylketonuric patients suffer from phenylalanine-associated (mild) neuropsychological impairment. To date it is still unclear whether patients' deficits show a progression on ageing. This unsolved question seems to be an important aspect in the still ongoing debate about how long and how strictly ...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1005587915468
更新日期:1999-08-01 00:00:00
abstract::Niemann-Pick disease type C2 (NPC2) is caused by the inherited deficiency of a lysosomal cholesterol transport protein, NPC2 protein. Many cases of NPC2 present in early infancy with inflammatory lung disease, with subsequent severe neurological disease and death in early childhood. This disease is theoretically corre...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-010-9060-3
更新日期:2010-12-01 00:00:00
abstract::Massive production and accumulation of a single abnormal protein may constitute a major toxic burden for the cell and even compromise the organism's long-term viability. Consequently, adaptation and survival have forced evolution to create 'quality control' mechanisms that detect, monitor, and often degrade such abnor...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/s10545-006-0251-x
更新日期:2006-04-01 00:00:00
abstract:BACKGROUND:Fabry disease, an X-linked lysosomal storage disorder, leads to multi-organ dysfunction, including cerebrovascular disease and psychological disorders. However, the prevalence and pattern of associated cognitive dysfunction is not well understood. OBJECTIVES:To investigate whether there is reliable evidence...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s10545-013-9643-x
更新日期:2014-03-01 00:00:00
abstract::Carnitine transporter deficiency (CTD) and holocarboxylase synthetase deficiency (HLCSD) are frequent in The Faroe Islands compared to other areas, and treatment is available for both disorders. In order to evaluate the feasibility of neonatal screening in The Faroe Islands we studied detection in the neonatal period ...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-007-0527-9
更新日期:2007-06-01 00:00:00
abstract:BACKGROUND:A number of studies have already investigated the prevalence of Fabry disease (FD) in adult patients with unexplained left ventricular hypertrophy (LVH) with rates varying from 0 % up to 12 % reflecting referral and gender bias as well as differences in diagnostic methodology. We aimed to perform a prospecti...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-013-9659-2
更新日期:2014-05-01 00:00:00
abstract::Techniques for studying metabolic events in vivo in patients with inborn errors are reviewed. Loading or provocation tests that have been used widely are insensitive and frequently non-specific. Compounds labelled with stable isotopes can be used to study enzyme kinetics and substrate turnover, providing more detailed...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/BF01797925
更新日期:1991-01-01 00:00:00
abstract::Wilson's disease (WD) is an autosomal recessive disorder characterized by the functional disruption of adenosine triphosphatase 7B (ATP7B), which results in positive copper balance. Although the primary manifestations of the disease are hepatic or neurological in scope, the factors that cause a very diverse picture of...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-013-9625-z
更新日期:2014-01-01 00:00:00
abstract::We report a retrospective electron-microscopical study of liver biopsies and fibroblast cultures of 19 patients with congenital disorders of glycosylation (CDG) of different subtypes. A constant finding in liver biopsies of all CDG-I cases was that of abnormal lysosomal lamellar inclusions in the hepatocytes, which we...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1024023429680
更新日期:2003-01-01 00:00:00
abstract::An adult patient with hereditary tyrosinaemia type I who developed renal failure is reported. She received a renal transplant at the age of 23 years. In childhood her kidney disease was dominated by multiple tubular defects with resulting hypophosphataemic rickets. Metabolic acidosis was the most prominent feature in ...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01804389
更新日期:1991-01-01 00:00:00
abstract::A 5-year-old boy, excreting large amounts of 2-hydroxyglutaric acid in the urine (3.3-7.6 mmol/l), is described. The patient presented with psychomotor retardation and dystrophy. His skeletal age was delayed. The EEG was not well differentiated; it resembled that observed in 2-year-old children. There was a severe ana...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF02312543
更新日期:1980-01-01 00:00:00
abstract::Patients with MPS IV have a clinical disorder quite different from other MPS conditions. The major treatment issue revolves around the prevention of cervical myelopathy, although the other aspects of this multisystem disease should not be forgotten. Management is inevitably multidisciplinary and the paediatrician shou...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/BF01799267
更新日期:1996-01-01 00:00:00
abstract::Ultrastructural study of skin biopsies in two cases of Gaucher disease (GD) patients (types II and III) revealed hitherto unknown alteration of the blood capillary endothelial cells (ECs) featured by hypertrophy and numerous subplasmalemmal microvesicles underneath both the apical and basal membranes. There was also p...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-009-9018-5
更新日期:2010-02-01 00:00:00
abstract::Achieving the goals of newborn screening is, as for any screening, a balancing act: getting the maximum benefit from screening while producing the minimum harm. The advent of "expanded" newborn screening, with a large number of disorders detectable using a single test, has also posed problems, not new, but now more ob...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-010-9106-6
更新日期:2010-10-01 00:00:00
abstract::N-Acetylaspartate (NAA) is an important osmolyte in the vertebrate brain that participates in an intercompartmental metabolic cycle. It is synthesized primarily in neurons from L-aspartate (Asp) and acetyl-CoA and, after its regulated release, it is hydrolysed by aspartoacylase in an oligodendrocyte compartment to pro...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1005618526988
更新日期:2000-11-01 00:00:00
abstract::Thirty patients with early and continuously treated phenylketonuria (PKU) between 8 and 20 years of age were compared with 30 controls, matched individually for age, sex, and educational level of both parents, on behaviour rating scales for parents and teachers as well as a school achievement scale. PKU patients, as a...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1005669610722
更新日期:2000-09-01 00:00:00
abstract::The clinical problems, dietary management and biochemical monitoring over a 40-year period of the longest-surviving patient with maple syrup urine disease are described. Her case illustrates that a good outcome can be obtained with early diagnosis and institution of a diet restricted in branched-chain amino acids. Cha...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-006-0204-4
更新日期:2006-02-01 00:00:00
abstract::Glycogen storage disease type 1a (von Gierke disease, GSD1a) is caused by the deficiency of microsomal glucose-6-phosphatase (G6Pase) activity. The cloning of G6Pase cDNA and characterization of the human G6Pase gene enabled the identification of the mutations causing GSD1a. Here we report on the clinical and biochemi...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1005445802822
更新日期:1999-04-01 00:00:00
abstract::In a few rare diseases, specialised studies in cerebrospinal fluid (CSF) are required to identify the underlying metabolic disorder. We aimed to explore the possibility of detecting key synaptic proteins in the CSF, in particular dopaminergic and gabaergic, as new procedures that could be useful for both pathophysiolo...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-010-9256-6
更新日期:2011-04-01 00:00:00
abstract::A female patient with isovaleric acidaemia had a successful outcome from pregnancy. ...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1022837416232
更新日期:2002-12-01 00:00:00
abstract::We report D-2-hydroxyglutaric aciduria in a neonate with intracranial haemorrhage and absence of the corpus callosum. D-2-hydroxyglutaric acid was confirmed by specific chiral derivatization gas chromatography-mass spectrometry. Absence of the corpus callosum and spontaneous neonatal intracranial haemorrhage should ra...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1024000202364
更新日期:2003-01-01 00:00:00
abstract::NTBC is a triketone with herbicidal activity that has been shown to have a novel mode of action by inhibiting the enzyme 4-hydroxyphenylpyruvate dioxygenase in plants. Early studies on the toxicity of this compound found that rats treated with NTBC developed corneal lesions. Investigations aimed at understanding the m...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1023/a:1005458703363
更新日期:1998-08-01 00:00:00
abstract::Maple syrup urine disease (MSUD), an inborn error of amino acids catabolism is characterized by accumulation of branched chain amino acids (BCAAs) leucine, isoleucine, valine and their corresponding alpha-ketoacids. Impact on the cognitive development has been reported historically, with developmental delays of varyin...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,多中心研究
doi:10.1007/s10545-017-0033-7
更新日期:2017-05-01 00:00:00
abstract::The introduction of tandem mass spectrometry has unquestionably been the most striking recent advance in newborn screening. A single test is applied for the simultaneous diagnosis of a number of disorders, making it possible to screen for some disorders that might otherwise have seemed too rare. Current screening is f...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/s10545-007-0538-6
更新日期:2007-04-01 00:00:00