Evidence map›Paper›PMID 30045765›Full record

ArticleBiology of sex differences2018

Sex-associated differences in mitochondrial function in human peripheral blood mononuclear cells (PBMCs) and brain.

C Silaidos, U Pilatus, R Grewal, S Matura, B Lienerth, J Pantel, G P Eckert

Open access · goldAbstract read
In one paragraph

Article in Biology of sex differences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 85 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
85citing papers in PubMed, 5 pooled it
3.6field-weighted citation impact, top 6% 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

85 citing papers in PubMed, 5 syntheses or guidelines pooled it, 138 citations in OpenAlex.

  1. Pooled it
  2. Sex-stratified genome-wide meta-analysis identifies novel loci for cognitive decline in older adults.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Pooled it
  3. Human studies of mitochondrial biology demonstrate an overall lack of binary sex differences: A multivariate meta-analysis.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2022
    Pooled it
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  8. Mitochondrial membrane potential and delayed graft function following kidney transplantation.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2019
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  20. Are statin side effects dependent on sex? A narrative review.Przeglad menopauzalny = Menopause review · 2025
    Review

25 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

7 authors at 2 institutions in 1 country.

C SilaidosNutrition in Prevention and Therapy, Institute for Nutritional Sciences, University of Giessen, Wilhelmstr. 20, 35392, Giessen, Germany.
U PilatusInstitute for Neuroradiology, Goethe University Frankfurt, Schleusenweg 2-16, 60528, Frankfurt/Main, Germany.
R GrewalNutrition in Prevention and Therapy, Institute for Nutritional Sciences, University of Giessen, Wilhelmstr. 20, 35392, Giessen, Germany.
S MaturaInstitute of General Practice, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt/Main, Germany.
B LienerthBrain Imaging Centre, Schleusenweg 2-16, 60528, Frankfurt/Main, Germany.
J PantelInstitute of General Practice, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt/Main, Germany.
G P EckertNutrition in Prevention and Therapy, Institute for Nutritional Sciences, University of Giessen, Wilhelmstr. 20, 35392, Giessen, Germany. eckert@uni-giessen.de.ORCID 0000-0002-8002-9983
Goethe University Frankfurt · DEJustus-Liebig-Universität Gießen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlzheimer's disease (AD) is the most common form of dementia, and it affects more women than men. Mitochondrial dysfunction (MD) plays a key role in AD, and it is detectable at an early stage of the degenerative process in peripheral tissues, such as peripheral mononuclear blood cells (PBMCs). However, whether these changes are also reflected in cerebral energy metabolism and whether sex-specific differences in mitochondrial function occur are not clear. Therefore, we estimated the correlation between mitochondrial function in PBMCs and brain energy metabolites and examined sex-specific differences in healthy participants to elucidate these issues.

methodsThe current pilot study included 9 male and 15 female healthy adults (mean age 30.8 ± 7.1 years). Respiration and activity of mitochondrial respiratory complexes were measured using a Clarke-electrode (Oxygraph-2k system), and adenosine triphosphate (ATP) levels were determined using a bioluminescence-based assay in isolated PBMCs. Citrate synthase activity as a mitochondrial marker was measured using a photometric assay. Concentrations of brain energy metabolites were quantified in the same individuals using

resultsWe detected sex-associated differences in mitochondrial function. Mitochondrial complexes I, I+II, and IV and uncoupled respiration and electron transport system (ETS) capacity in PBMCs isolated from blood samples of females were significantly (p < 0.05; p < 0.01) higher compared to males. ATP levels in the PBMCs of female participants were approximately 10% higher compared to males. Citrate synthase (CS) activity, a marker of mitochondrial content, was significantly (p < 0.05) higher in females compared to males. Sex-associated differences were also found for brain metabolites. The N-acetylaspartate (NAA) concentration was significantly higher in female participants compared to males in targeted regions. This difference was observed in white matter (WM) and an area with a high percentage (> 50%) of gray matter (GM) (p < 0.05; p < 0.01). The effect sizes indicated a strong influence of sex on these parameters. Sex-associated differences were found in PBMCs and brain, but the determined parameters were not significantly correlated.

conclusionsOur study revealed sex-associated differences in mitochondrial function in healthy participants. The underlying mechanisms must be elucidated in more detail, but our study suggests that mitochondrial function in PBMCs is a feasible surrogate marker to detect differences in mitochondrial function and energy metabolism in humans and it underscores the necessity of sex-specific approaches in therapies that target mitochondrial dysfunction.

Indexed as

Sex CharacteristicsAdenosine TriphosphateAdultAspartic AcidBrainCell RespirationCitrate (si)-SynthaseFemaleHumansLeukocytes, MononuclearMaleMitochondriaYoung AdultAdenosine TriphosphateAspartic AcidCitrate (si)-SynthaseN-acetylaspartateBlood cellsMitochondriaMitochondrial respirationMR spectroscopyN-AcetylaspartateSex differences

Identifiers

PMID30045765
PMCPMC6060503
OpenAlexW2884114748

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.