Evidence map›Paper›PMID 32326435›Full record

ArticleCells2020

Older Adults with Physical Frailty and Sarcopenia Show Increased Levels of Circulating Small Extracellular Vesicles with a Specific Mitochondrial Signature.

Anna Picca, Raffaella Beli, Riccardo Calvani, Hélio José Coelho-Júnior, Francesco Landi, Roberto Bernabei, Cecilia Bucci, Flora Guerra, Emanuele Marzetti

Abstract read
In one paragraph

Article in Cells, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing 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

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

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  5. Therapeutic and diagnostic potential of extracellular vesicle (EV)-mediated intercellular transfer of mitochondria and mitochondrial components.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2026
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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

9 authors.

Anna PiccaFondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy.ORCID 0000-0001-7032-3487
Raffaella BeliDepartment of Biological and Environmental Sciences and Technologies, Università del Salento, 73100 Lecce, Italy.
Riccardo CalvaniFondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy.ORCID 0000-0001-5472-2365
Hélio José Coelho-JúniorUniversità Cattolica del Sacro Cuore, 00168 Rome, Italy.ORCID 0000-0001-7482-9514
Francesco LandiFondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy.
Roberto BernabeiFondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy.
Cecilia BucciDepartment of Biological and Environmental Sciences and Technologies, Università del Salento, 73100 Lecce, Italy.ORCID 0000-0002-6232-6183
Flora GuerraDepartment of Biological and Environmental Sciences and Technologies, Università del Salento, 73100 Lecce, Italy.ORCID 0000-0003-3379-7469
Emanuele MarzettiFondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mitochondrial dysfunction and systemic inflammation are major factors in the development of sarcopenia, but the molecular determinants linking the two mechanisms are only partially understood. The study of extracellular vesicle (EV) trafficking may provide insights into this relationship. Circulating small EVs (sEVs) from serum of 11 older adults with physical frailty and sarcopenia (PF&S) and 10 controls were purified and characterized. Protein levels of three tetraspanins (CD9, CD63, and CD81) and selected mitochondrial markers, including adenosine triphosphate 5A (ATP5A), mitochondrial cytochrome C oxidase subunit I (MTCOI), nicotinamide adenine dinucleotide reduced form (NADH):ubiquinone oxidoreductase subunit B8 (NDUFB8), NADH:ubiquinone oxidoreductase subunit S3 (NDUFS3), succinate dehydrogenase complex iron sulfur subunit B (SDHB), and ubiquinol-cytochrome C reductase core protein 2 (UQCRC2) were quantified by Western immunoblotting. Participants with PF&S showed higher levels of circulating sEVs relative to controls. Protein levels of CD9 and CD63 were lower in the sEV fraction of PF&S older adults, while CD81 was unvaried between groups. In addition, circulating sEVs from PF&S participants had lower amounts of ATP5A, NDUFS3, and SDHB. No signal was detected for MTCOI, NDUFB8, or UQCRC2 in either participant group. Our findings indicate that, in spite of increased sEV secretion, lower amounts of mitochondrial components are discarded through EV in older adults with PF&S. In-depth analysis of EV trafficking might open new venues for biomarker discovery and treatment development for PF&S.

Indexed as

AgedCytosolElectron TransportElectron Transport Chain Complex ProteinsExtracellular VesiclesFemaleFrailtyHumansMaleMitochondriaSarcopeniaElectron Transport Chain Complex Proteinsagingbiomarkersexosomesmitochondrial-derived vesicles (MDVs)mitochondrial dynamicsmitochondrial-lysosomal axismitochondrial quality controlmitophagy

Identifiers

PMID32326435
PMCPMC7227017

What OpenQuestion holds

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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.