Evidence map›Paper›PMID 26540518›Full record

ArticlePloS one2015

Effects of Mountain Ultra-Marathon Running on ROS Production and Oxidative Damage by Micro-Invasive Analytic Techniques.

Simona Mrakic-Sposta, Maristella Gussoni, Sarah Moretti, Lorenza Pratali, Guido Giardini, Philippe Tacchini, Cinzia Dellanoce, Alessandro Tonacci, Francesca Mastorci, Andrea Borghini and 2 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 4 pooled it
10.2field-weighted citation impact, top 1% 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

60 citing papers in PubMed, 4 syntheses or guidelines pooled it, 129 citations in OpenAlex.

  1. Pooled it
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  5. Effects of vitamin DJournal of the International Society of Sports Nutrition · 2026
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  16. Erectile Dysfunction and Oxidative Stress: A Narrative Review.International journal of molecular sciences · 2025
    Review
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  19. Observational
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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

12 authors at 6 institutions in 2 countries.

Simona Mrakic-SpostaInstitute of Bioimaging and Molecular Physiology, National Council of Research (CNR), Segrate (Milan), Italy.
Maristella GussoniDepartment of Pathophysiology and Transplantation-Physiology Section, University of Milan, Milan, Italy.
Sarah MorettiInstitute of Bioimaging and Molecular Physiology, National Council of Research (CNR), Segrate (Milan), Italy.
Lorenza PrataliInstitute of Clinical Physiology, National Council of Research (CNR), Pisa, Italy.
Guido GiardiniNeurology and Neurophysiology Department. Mountain Medicine Center Valle d'Aosta Regional Hospital Umberto Parini, Aosta, Italy.
Philippe TacchiniEDEL Therapeutics S.A., PSE-B/EPFL, CH-1015 Lausanne, Switzerland.
Cinzia DellanoceInstitute of Clinical Physiology, National Council of Research (CNR), Pisa, Italy.
Alessandro TonacciInstitute of Clinical Physiology, National Council of Research (CNR), Pisa, Italy.
Francesca MastorciInstitute of Clinical Physiology, National Council of Research (CNR), Pisa, Italy.
Andrea BorghiniInstitute of Clinical Physiology, National Council of Research (CNR), Pisa, Italy.
Michela MontorsiUniversità Telematica S. Raffaele Roma, Italy.
Alessandra VezzoliInstitute of Bioimaging and Molecular Physiology, National Council of Research (CNR), Segrate (Milan), Italy.
Istituto di Fisiologia Clinica · ITInstitute of Molecular Bioimaging and Physiology · ITAzienda USL della Valle d’Aosta · ITÉcole Polytechnique Fédérale de Lausanne · CHItalian University Line · ITUniversity of Milan · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAiming to gain a detailed insight into the physiological mechanisms involved under extreme conditions, a group of experienced ultra-marathon runners, performing the mountain Tor des Géants® ultra-marathon: 330 km trail-run in Valle d'Aosta, 24000 m of positive and negative elevation changes, was monitored. ROS production rate, antioxidant capacity, oxidative damage and inflammation markers were assessed, adopting micro-invasive analytic techniques.

methodsForty-six male athletes (45.04±8.75 yr, 72.6±8.4 kg, 1.76±0.05 m) were tested. Capillary blood and urine were collected before (Pre-), in the middle (Middle-) and immediately after (Post-) Race. Samples were analyzed for: Reactive Oxygen Species (ROS) production by Electron Paramagnetic Resonance; Antioxidant Capacity by Electrochemistry; oxidative damage (8-hydroxy-2-deoxy Guanosine: 8-OH-dG; 8-isoprostane: 8-isoPGF2α) and nitric oxide metabolites by enzymatic assays; inflammatory biomarkers (plasma and urine interleukin-6: IL-6-P and IL-6-U) by enzyme-linked immunosorbent assays (ELISA); Creatinine and Neopterin by HPLC, hematologic (lactate, glucose and hematocrit) and urine parameters by standard analyses.

resultsTwenty-five athletes finished the race, while twenty-one dropped out of it. A significant increase (Post-Race vs Pre) of the ROS production rate (2.20±0.27 vs 1.65±0.22 μmol.min-1), oxidative damage biomarkers (8-OH-dG: 6.32±2.38 vs 4.16±1.25 ng.mg-1 Creatinine and 8-isoPGF2α: 1404.0±518.30 vs 822.51±448.91 pg.mg-1Creatinine), inflammatory state (IL-6-P: 66.42±36.92 vs 1.29±0.54 pg.mL-1 and IL-6-U: 1.33±0.56 vs 0.71±0.17 pg.mL1) and lactate production (+190%), associated with a decrease of both antioxidant capacity (-7%) and renal function (i.e. Creatinine level +76%) was found.

conclusionsThe used micro-invasive analytic methods allowed us to perform most of them before, during and immediately after the race directly in the field, by passing the need of storing and transporting samples for further analysis. Considered altogether the investigated variables showed up that exhaustive and prolonged exercise not only promotes the generation of ROS but also induces oxidative stress, transient renal impairment and inflammation.

Indexed as

8-Hydroxy-2'-DeoxyguanosineAntioxidantsAthletesBiomarkersDeoxyguanosineDinoprostExerciseHumansInflammationInterleukin-6MaleMiddle AgedNitric OxideOxidative StressPhysical EnduranceReactive Oxygen Species8-epi-prostaglandin F2alpha8-Hydroxy-2'-DeoxyguanosineAntioxidantsBiomarkersDeoxyguanosineDinoprostIL6 protein, humanInterleukin-6Nitric OxideReactive Oxygen Species

Identifiers

PMID26540518
PMCPMC4634988
OpenAlexW2252537765

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.