Abstract:
:Mucopolysaccharidosis II (Hunter disease), a lysosomal storage disorder caused by a deficiency of iduronate-2-sulfatase (IDS), has variable clinical phenotypes. Nearly 300 different mutations have been identified in the IDS gene from patients with Hunter disease, but the correlation between the genotype and phenotype has remained unclear. We studied the characteristics of 11 missense mutations, which were detected in the patients or artificially introduced, using stable expression experiments and structural analysis. The mutants found in the attenuated phenotype showed considerable residual activity (0.2-2.4% of the wild-type IDS activity) and those in the severe phenotype had no activity. In immunoblot analysis, both the 73-75 kDa precursor and processed forms were detected in the expression of 'attenuated' mutants (R48P, A85T and W337R) and the artificial active site mutants (C84S, C84T). The 73-75 kDa initial precursor was detected in the 'severe' mutants (P86L, S333L, S349I, R468Q, R468L). The truncated 68 kDa precursor form was synthesized in the Q531X mutant. The results of immunoblotting indicated rapid degradation and/or insufficiency in processing as a result of structural alteration of the IDS protein. A combination of analyses of genotype and molecular phenotypes, including enzyme activity, protein processing and structural analysis with an engineered reference protein, could provide an avenue to understanding the molecular mechanism of the disease and could give a useful tool for the evaluation of possible therapeutic chemical compounds.
journal_name
J Inherit Metab Disjournal_title
Journal of inherited metabolic diseaseauthors
Sukegawa-Hayasaka K,Kato Z,Nakamura H,Tomatsu S,Fukao T,Kuwata K,Orii T,Kondo Ndoi
10.1007/s10545-006-0440-7subject
Has Abstractpub_date
2006-12-01 00:00:00pages
755-61issue
6eissn
0141-8955issn
1573-2665journal_volume
29pub_type
杂志文章abstract::A brief outline of the known biochemical roles of manganese and chromium is given before the problems of determining human trace metal status are discussed. The factors predisposing to trace metal deficiency are reviewed but particular emphasis is placed upon those which alter the bioavailability of essential trace me...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/BF01811319
更新日期:1983-01-01 00:00:00
abstract:BACKGROUND:Hearing loss and tinnitus are common symptoms in Fabry disease and increase in prevalence with age. This study aimed to provide an epidemiological description of hearing impairment and tinnitus in children with Fabry disease in the Fabry Outcome Survey (FOS), an international database to assess the natural h...
journal_title:Journal of inherited metabolic disease
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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
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/BF01799608
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1007/BF02179139
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abstract::For over two decades, nitisinone (NTBC) has been successfully used to manipulate the tyrosine degradation pathway and save the lives of many children with hereditary tyrosinaemia type 1. More recently, NTBC has been used to halt homogentisic acid accumulation in alkaptonuria (AKU) with evidence suggesting its efficacy...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1002/jimd.12229
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abstract::Biotinidase deficiency is an autosomal recessive metabolic disorder included in many newborn screening programmes. Prior to the introduction of screening for biotinidase deficiency in Sweden in 2002, the disorder was almost unknown, with only one case diagnosed clinically. Biotinidase activity was measured in dried bl...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-010-9065-y
更新日期:2010-12-01 00:00:00
abstract:BACKGROUND:Hearing loss (HL) is a well-known feature of Fabry disease (FD). Its presence and characteristics have mainly been studied in adult patients, while only limited data are available on the presence and degree of HL in children with FD. This prompted us to study hearing sensitivity in pediatric FD patients. ME...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-017-0051-5
更新日期:2017-09-01 00:00:00
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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
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
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更新日期:2020-12-24 00:00:00
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01799256
更新日期:1996-01-01 00:00:00
abstract::Hurler-Scheie syndrome is caused by alpha-l-iduronidase deficiency. Enzyme replacement therapy (ERT) can improve physical capacity and reduces organomegaly. However, the effect on bradytrophic connective tissue is limited. As intravenously administered enzyme cannot cross the blood-brain barrier, the therapy of choice...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-009-1265-y
更新日期:2009-12-01 00:00:00
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1023/a:1022043307569
更新日期:2002-11-01 00:00:00
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
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更新日期:2012-11-01 00:00:00
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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
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01799685
更新日期:1990-01-01 00:00:00
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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
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF02310878
更新日期:1983-01-01 00:00:00
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-005-0473-3
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01799751
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journal_title:Journal of inherited metabolic disease
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更新日期:2011-06-01 00:00:00
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,多中心研究
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更新日期:2010-12-01 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
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更新日期:2007-10-01 00:00:00
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/s10545-017-0083-x
更新日期:2017-11-01 00:00:00
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01800430
更新日期:1988-01-01 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
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1007/BF01805427
更新日期:1985-01-01 00:00:00
abstract::There is paucity of literature on dietary treatment in glycogen storage disease (GSD) type IV and formal guidelines are not available. Traditionally, liver transplantation was considered the only treatment option for GSD IV. In light of the success of dietary treatment for the other hepatic forms of GSD, we have initi...
journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章
doi:10.1002/jimd.12339
更新日期:2020-12-17 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