Evidence map›Paper›PMID 8412018›Full record

ArticleJournal of inherited metabolic disease1993

L-2-hydroxyglutaric acidaemia: clinical and biochemical findings in 12 patients and preliminary report on L-2-hydroxyacid dehydrogenase.

P G Barth, G F Hoffmann, J Jaeken, R J Wanders, M Duran, G A Jansen, C Jakobs, W Lehnert, F Hanefeld, J Valk

Abstract read
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In one paragraph

Article in Journal of inherited metabolic disease, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 96 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Emerging cellular themes in leukodystrophies.Frontiers in cell and developmental biology · 2022
    Review
  4. Article
  5. Article
  6. Article
  7. Progress in understanding 2-hydroxyglutaric acidurias.Journal of inherited metabolic disease · 2012
    Review
  8. Article
  9. Article
  10. Mental retardation and inborn errors of metabolism.Journal of inherited metabolic disease · 2009
    Review
  11. Review
  12. L: -2-Hydroxyglutaric aciduria, a disorder of metabolite repair.Journal of inherited metabolic disease · 2009
    Review
  13. Article
  14. L-2-hydroxyglutaric aciduria, a defect of metabolite repair.Journal of inherited metabolic disease · 2007
    Article
  15. A gene encoding a putative FAD-dependent L-2-hydroxyglutarate dehydrogenase is mutated in L-2-hydroxyglutaric aciduria.Proceedings of the National Academy of Sciences of the United States of America · 2004
    Article
  16. Review
  17. Article
  18. L-2-hydroxyglutaric aciduria and lactic acidosis.Journal of inherited metabolic disease · 1998
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 9 institutions in 4 countries.

P G BarthDepartment of Pediatrics, University Hospital, Amsterdam, The Netherlands.
G F Hoffmann
J Jaeken
R J Wanders
M Duran
G A Jansen
C Jakobs
W Lehnert
F Hanefeld
J Valk
University of Amsterdam · NLHeidelberg University · DEKU Leuven · BEUniversity Hospital Heidelberg · DEUniversity Medical Center Freiburg · DEUniversity of Genoa · ITUniversity of Göttingen · DEUniversity of Würzburg · DEWilhelmina Children's Hospital · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

L-2-Hydroxyglutaric acidaemia represents a newly defined inborn error of metabolism, with increased levels of L-2-hydroxyglutaric acid in urine, plasma and cerebrospinal fluid. The concentration in cerebrospinal fluid is higher than in plasma. The other consistent biochemical finding is an increase of lysine in blood and cerebrospinal fluid, but lysine loading does not increase L-2-hydroxyglutaric acid concentration in plasma. This autosomal recessively inherited disease is expressed as progressive ataxia, mental deficiency with subcortical leukoencephalopathy and cerebellar atrophy on magnetic resonance imaging. Since these features were described in 8 patients by Barth and co-workers in 1992, 4 more patients with similar findings have been diagnosed and added to the present series. L-2-Hydroxyglutaric acid is found in only trace amounts on routine gas chromatographic screening in normal persons, and its origin, its fate and even its relevance to normal metabolism are unknown. Therefore its catabolism was studied in normal liver. Incubation of rat liver with L-2-hydroxyglutaric acid did not produce H2O2, which excluded (peroxisomal) L-2-hydroxyacid oxidase as the main route of catabolism. However, L-2-hydroxyglutaric acid is rapidly dehydrogenated if NAD+ is added as a co-factor to the standard reaction medium. This could also be demonstrated in human liver. The preliminary evidence for this enzyme activity in rats and humans, L-2-hydroxyglutaric acid dehydrogenase, is given. Further investigations are required to clarify the possible relevance to the metabolic defect in L-2-hydroxyglutaric acidaemia.

Indexed as

AdolescentAdultAlcohol OxidoreductasesAmino Acid Metabolism, Inborn ErrorsBrainChildFemaleGlutaratesHumansLysineMagnetic Resonance ImagingMale2-hydroxyacid dehydrogenaseAlcohol Oxidoreductasesalpha-hydroxyglutarateGlutaratesLysine

Identifiers

PMID8412018
OpenAlexW1991792345

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.