Evidence map›Paper›PMID 24223995›Full record

ArticlePloS one2013

Endurance exercise and conjugated linoleic acid (CLA) supplementation up-regulate CYP17A1 and stimulate testosterone biosynthesis.

Rosario Barone, Filippo Macaluso, Patrizia Catanese, Antonella Marino Gammazza, Luigi Rizzuto, Paola Marozzi, Giuseppe Lo Giudice, Tomaso Stampone, Francesco Cappello, Giuseppe Morici and 3 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 3 pooled it
3.1field-weighted citation impact, top 9% 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

20 citing papers in PubMed, 3 syntheses or guidelines pooled it, 52 citations in OpenAlex.

  1. Pooled it
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  8. Curcumin Affects HSP60 Folding Activity and Levels in Neuroblastoma Cells.International journal of molecular sciences · 2020
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  9. LaInternational journal of nanomedicine · 2020
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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

13 authors at 2 institutions in 1 country.

Rosario BaroneDepartment of Experimental Biomedicine and Clinical Neurosciences (BioNeC), University of Palermo, Palermo, Italy.
Filippo Macaluso
Patrizia Catanese
Antonella Marino Gammazza
Luigi Rizzuto
Paola Marozzi
Giuseppe Lo Giudice
Tomaso Stampone
Francesco Cappello
Giuseppe Morici
Giovanni Zummo
Felicia Farina
Valentina Di Felice
University of Palermo · ITOspedale Vincenzo Cervello · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A new role for fat supplements, in particular conjugated linoleic acid (CLA), has been delineated in steroidogenesis, although the underlying molecular mechanisms have not yet been elucidated. The aims of the present study were to identify the pathway stimulated by CLA supplementation using a cell culture model and to determine whether this same pathway is also stimulated in vivo by CLA supplementation associated with exercise. In vitro, Leydig tumour rat cells (R2C) supplemented with different concentrations of CLA exhibited increasing testosterone biosynthesis accompanied by increasing levels of CYP17A1 mRNA and protein. In vivo, trained mice showed an increase in free plasma testosterone and an up-regulation of CYP17A1 mRNA and protein. The effect of training on CYP17A1 expression and testosterone biosynthesis was significantly higher in the trained mice supplemented with CLA compared to the placebo. The results of the present study demonstrated that CLA stimulates testosterone biosynthesis via CYP17A1, and endurance training led to the synthesis of testosterone in vivo by inducing the overexpression of CYP17A1 mRNA and protein in the Leydig cells of the testis. This effect was enhanced by CLA supplementation. Therefore, CLA-associated physical activity may be used for its steroidogenic property in different fields, such as alimentary industry, human reproductive medicine, sport science, and anti-muscle wasting.

Indexed as

Dietary SupplementsPhysical Conditioning, AnimalPhysical EnduranceAnimalsCell Line, TumorLinoleic Acids, ConjugatedMaleMiceRatsRNA, MessengerSteroid 17-alpha-HydroxylaseTestosteroneUp-RegulationLinoleic Acids, ConjugatedRNA, MessengerSteroid 17-alpha-HydroxylaseTestosterone

Identifiers

PMID24223995
PMCPMC3818175
OpenAlexW2091157388

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.