Evidence map›Paper›PMID 26846325›Full record

ArticleLipids2016

Reduced Mitochondrial Function in Human Huntington Disease Lymphoblasts is Not Due to Alterations in Cardiolipin Metabolism or Mitochondrial Supercomplex Assembly.

Edgard M Mejia, Sarah Chau, Genevieve C Sparagna, Simonetta Sipione, Grant M Hatch

Abstract read
PubMed Publisher
In one paragraph

Article in Lipids, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

13 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Mitochondrial Dysfunction in Repeat Expansion Diseases.Antioxidants (Basel, Switzerland) · 2023
    Review
  5. Review
  6. Review
  7. Expression of mutant exon 1 huntingtin fragments in human neural stem cells and neurons causes inclusion formation and mitochondrial dysfunction.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2020
    Article
  8. Observational
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
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

5 authors at 4 institutions in 2 countries.

Edgard M MejiaDepartment of Pharmacology and Therapeutics, Faculty of Health Sciences, University of Manitoba, 501C-715 McDermot Avenue, Winnipeg, MB, R3E 3P4, Canada.
Sarah ChauDepartment of Medicine, Division of Cardiology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, 80045, USA.
Genevieve C SparagnaDepartment of Medicine, Division of Cardiology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, 80045, USA.
Simonetta SipioneDepartment of Pharmacology, University of Alberta, Edmonton, AB, T6G2S2, Canada.
Grant M HatchDepartment of Pharmacology and Therapeutics, Faculty of Health Sciences, University of Manitoba, 501C-715 McDermot Avenue, Winnipeg, MB, R3E 3P4, Canada. ghatch@chrim.ca.
University of Manitoba · CAUniversity of Alberta · CAUniversity of Colorado Anschutz Medical Campus · USUniversity of Colorado Denver · US

Funding

CIHR MOP 111219
6 · The paper itself

Abstract

Huntington's Disease (HD) is an autosomal dominant disease that occurs as a result of expansion of the trinucleotide repeat CAG (glutamine) on the HTT gene. HD patients exhibit various forms of mitochondrial dysfunction within neurons and peripheral tissues. Cardiolipin (Ptd2Gro) is a polyglycerophospholipid found exclusively in mitochondria and is important for maintaining mitochondrial function. We examined if altered Ptd2Gro metabolism was involved in the mitochondrial dysfunction associated with HD. Mitochondrial basal respiration, spare respiratory capacity, ATP coupling efficiency and rate of glycolysis were markedly diminished in Epstein-Barr virus transformed HD lymphoblasts compared to controls (CTRL). Mitochondrial supercomplex formation and Complex I activity within these supercomplexes did not vary between HD patients with different length of CAG repeats and appeared unaltered compared to CTRL. In contrast, in vitro Complex I enzyme activity in mitochondrial enriched samples was reduced in HD lymphoblasts compared to CTRL. The total cellular pool size of Ptd2Gro and its synthesis/remodeling from [(3)H]acetate/[(14)C]oleate were unaltered in HD lymphoblasts compared to CTRL. In addition, the molecular species of Ptd2Gro were essentially unaltered in HD lymphoblasts compared to CTRL. We conclude that compared to CTRL lymphoblasts, HD lymphoblasts display impaired mitochondrial basal respiration, spare respiratory capacity, ATP coupling efficiency and rate of glycolysis with any pathological CAG repeat length, but this is not due to alterations in Ptd2Gro metabolism. We suggest that HD patient lymphoblasts may be a useful model to study defective energy metabolism that does not involve alterations in Ptd2Gro metabolism.

Indexed as

Adenosine TriphosphateCardiolipinsEpstein-Barr Virus InfectionsGlycolysisHerpesvirus 4, HumanHumansHuntington DiseaseLymphocytesMitochondriaMitochondrial ProteinsAdenosine TriphosphateCardiolipinsMitochondrial ProteinsCardiolipinGeneral areaHumanLipid metabolismMammalian lipid biochemistryMetabolismNutritionPhospholipid metabolismSpecific lipids

Identifiers

PMID26846325
OpenAlexW2273214088

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.