Evidence map›Paper›PMID 33996491›Full record

ArticleMolecular genetics and metabolism reports2021

Blood, urine and cerebrospinal fluid analysis in TH and AADC deficiency and the effect of treatment.

Tessa Wassenberg, Ben P H Geurtz, Leo Monnens, Ron A Wevers, Michèl A Willemsen, Marcel M Verbeek

Abstract read
In one paragraph

Article in Molecular genetics and metabolism reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Guideline
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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

6 authors.

Tessa WassenbergRadboud university medical center, Department of Neurology (943), Donders Institute for Brain, Cognition and Behaviour, PO Box 9101, 6500 HB, Nijmegen, the Netherlands.
Ben P H GeurtzRadboud university medical center, Department of Laboratory Medicine, Translational Metabolic Laboratory (830), PO Box 9101, 6500 HB, Nijmegen, the Netherlands.
Leo MonnensRadboud university medical center, Department of Physiology (392), PO Box 9101, 6500 HB, Nijmegen, the Netherlands.
Ron A WeversRadboud university medical center, Department of Laboratory Medicine, Translational Metabolic Laboratory (830), PO Box 9101, 6500 HB, Nijmegen, the Netherlands.
Michèl A WillemsenRadboud university medical center, Amalia Children's Hospital, Department of Pediatric Neurology (801), Donders Institute for Brain, Cognition and Behaviour, PO Box 9101, 6500 HB Nijmegen, the Netherlands.
Marcel M VerbeekRadboud university medical center, Department of Neurology (943), Donders Institute for Brain, Cognition and Behaviour, PO Box 9101, 6500 HB, Nijmegen, the Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAromatic L-amino acid decarboxylase (AADC) deficiency and tyrosine hydroxylase (TH) deficiency are rare inherited disorders of monoamine neurotransmitter synthesis which are typically diagnosed using cerebrospinal fluid examination of monoamine neurotransmitter metabolites. Until now, it has not been systematically studied whether analysis of monamine neurotransmitter metabolites in blood or urine has diagnostic value as compared to cerebrospinal fluid examination, or whether monoamine neurotransmitter metabolites in these peripheral body fluids is useful to monitor treatment efficacy.

methodsAssessment, both by literature review and retrospective analysis of our local university hospital database, of monoamine neurotransmitter metabolites in urine, blood and cerebrospinal fluid, and serum prolactin levels, before and during treatment in patients with AADC and TH deficiency.

resultsIn AADC deficiency, 3-

conclusionsThis study confirms that cerebrospinal fluid is the most informative body fluid to measure monoamine neurotransmitter metabolites when AADC or TH deficiency is suspected, and that routine follow-up of cerebrospinal fluid measurements to estimate treatment response is not needed. 3-

Indexed as

3-OMD, 3-O-methyldopa5-HIAA, 5-Hydroxyindoleacetic acid5-HTP, 5-HydroxytryptophanAADC, Aromatic L-amino acid decarboxylaseAADC deficiencyAromatic L-amino acid decarboxylase deficiencyBiomarkersCSF, Cerebrospinal fluidHVA, Homovanillic acidMHPG, 3-methoxy 4-hydroxyphenylglycolMonoamine neurotransmitter deficiencyTH deficiencyTH, Tyrosine hydroxylaseTML, Translational Metabolic LaboratoryTyrosine hydroxylase deficiencyVLA, Vanillactic acidVMA, Vanillylmandelic acid

Identifiers

PMID33996491
PMCPMC8093927

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Registered trials

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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.