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 by tandem mass spectrometry, carrier frequencies, clinical manifestations, and effect of treatment of CTD and HLCSD. We found 11 patients with CTD from five families and 8 patients with HLCSD from five families. The natural history of both disorders varied extensively among patients, ranging from patients who presumably had died from their disease to asymptomatic individuals. All symptomatic patients responded favourably to supplementation with L: -carnitine (in case of CTD) or biotin (in case of HLCSD), but only if treated early. Estimates of carrier frequency of about 1:20 for both disorders indicate that some enzyme-deficient individuals remain undiagnosed. Prospective and retrospective tandem mass spectrometry (MS/MS) analyses of carnitines from neonatally obtained filter-paper dried blood-spot samples (DBSS) uncovered 8 of 10 individuals with CTD when using both C(0) and C(2) as markers (current algorithm) and 10 of 10 when using only C(0) as marker. MS/MS analysis uncovered 5 of 6 patient with HLCSD. This is the first study to report successful neonatal MS/MS analysis for the diagnosis of HLCSD. We conclude that CTD and HLCSD are relatively frequent in The Faroe Islands and are associated with variable clinical manifestations, and that diagnosis by neonatal screening followed by early therapy will secure a good outcome.
journal_name
J Inherit Metab Disjournal_title
Journal of inherited metabolic diseaseauthors
Lund AM,Joensen F,Hougaard DM,Jensen LK,Christensen E,Christensen M,Nørgaard-Petersen B,Schwartz M,Skovby Fdoi
10.1007/s10545-007-0527-9subject
Has Abstractpub_date
2007-06-01 00:00:00pages
341-9issue
3eissn
0141-8955issn
1573-2665journal_volume
30pub_type
杂志文章abstract::3-Hydroxy-3-methylglutaric aciduria is a rare autosomal recessive genetic disorder that affects ketogenesis and leucine metabolism. The disease is caused by mutations in the gene coding for 3-hydroxy-3-methylglutaryl-coenzyme A lyase (HL). To date 26 different mutations have been described. A (betaalpha)(8) TIM barrel...
journal_title:Journal of inherited metabolic disease
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journal_title:Journal of inherited metabolic disease
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journal_title:Journal of inherited metabolic disease
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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,评审
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
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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:1986-01-01 00:00:00
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journal_title:Journal of inherited metabolic disease
pub_type: 杂志文章,评审
doi:10.1023/a:1005504223140
更新日期:1999-06-01 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:2001-06-01 00:00:00
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pub_type: 杂志文章
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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:2017-05-01 00:00:00
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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
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更新日期:1991-01-01 00:00:00
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