Evidence map›Paper›PMID 18252231›Full record

ArticleAmerican journal of human genetics2008

Sequence alterations within CYP7B1 implicate defective cholesterol homeostasis in motor-neuron degeneration.

Maria K Tsaousidou, Karim Ouahchi, Tom T Warner, Yi Yang, Michael A Simpson, Nigel G Laing, Philip A Wilkinson, Ricardo E Madrid, Heema Patel, Faycal Hentati and 5 more

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in American journal of human genetics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 87 papers.

0numbers the graph read from it
0cells of the map it votes in
87citing papers in PubMed
5.2field-weighted citation impact, top 3% 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

87 citing papers in PubMed, 184 citations in OpenAlex.

  1. Trial
  2. Article
  3. AAV8-based gene replacement therapy for hereditary spastic paraplegia type 5.Molecular therapy. Methods & clinical development · 2025
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  4. Review
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27 more citing papers are in PubMed but not listed here.

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

15 authors at 7 institutions in 4 countries.

Maria K TsaousidouMedical Genetics, Clinical Developmental Sciences, St George's University of London, Cranmer Terrace, London, SW17 0RE, UK.
Karim Ouahchi
Tom T Warner
Yi Yang
Michael A Simpson
Nigel G Laing
Philip A Wilkinson
Ricardo E Madrid
Heema Patel
Faycal Hentati
Michael A Patton
Afif Hentati
Philippa J Lamont
Teepu Siddique
Andrew H Crosby
St George's, University of London · GBNorthwestern University · USThe University of Western Australia · AUInstitut National de Santé Publique · TNNew York State Office for People With Developmental Disabilities · USNorthShore University HealthSystem · USRoland Hill (United Kingdom) · GB

Funding

Genetics of ALSR01NS050641 · NINDS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI SIDDIQUE, TEEPU · 2004 to 2008
$3.6M
Effect of Variation in Genes of Xenobiotic Responsive Proteins in ALSR01ES014469 · NIEHS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI SIDDIQUE, TEEPU · 2006 to 2008
$1.8M
Genes and Genetic Models in Motor Neuron DisordersR01NS046535 · NINDS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI SIDDIQUE, TEEPU · 2003 to 2007
$1.7M
Medical Research Council G0600983NIEHS NIH HHS ES014469NIEHS NIH HHS R01 ES014469NINDS NIH HHS NS046535NINDS NIH HHS NS050641NINDS NIH HHS R01 NS046535NINDS NIH HHS R01 NS050641
6 · The paper itself

Abstract

The hereditary spastic paraplegias (HSPs) are a genetically and clinically heterogeneous group of upper-motor-neuron degenerative diseases characterized by selective axonal loss in the corticospinal tracts and dorsal columns. Although numerous mechanisms involving defective subcellular transportation, mitochondrial malfunction, and increased oxidative stress have been proposed, the pathogenic basis underlying the neuronal loss is unknown. We have performed linkage analysis to refine the extent of the SPG5 disease locus and conducted sequence analysis of the genes located within this region. This identified sequence alterations in the cytochrome P450-7B1 (CYP7B1) associated with this pure form of HSP. In the liver, CYP7B1 offers an alternative pathway for cholesterol degradation and also provides the primary metabolic route for the modification of dehydroepiandrosterone neurosteroids in the brain. These findings provide the first direct evidence of a pivotal role of altered cholesterol metabolism in the pathogenesis of motor-neuron degenerative disease and identify a potential for therapeutic intervention in this form of HSP.

Indexed as

Amino Acid SequenceBase SequenceCholesterolChromosome MappingCytochrome P-450 Enzyme SystemCytochrome P450 Family 7HomeostasisHumansLiverMolecular Sequence DataPedigreeSequence Analysis, DNASpastic Paraplegia, HereditarySteroid HydroxylasesCholesterolCYP7B1 protein, humanCytochrome P-450 Enzyme SystemCytochrome P450 Family 7Steroid Hydroxylases

Identifiers

PMID18252231
PMCPMC2426914
OpenAlexW2147471451

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.