Evidence map›Paper›PMID 30071117›Full record

ArticlePloS one2018

Age-related changes in estradiol and longitudinal associations with fat mass in men.

Albert Wu, Zumin Shi, Sean Martin, Andrew Vincent, Leonie Heilbronn, Gary Wittert

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. 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
2.3field-weighted citation impact, top 11% 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, 33 citations in OpenAlex.

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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

6 authors at 1 institution in 1 country.

Albert WuFreemasons Foundation Centre for Men's Health, Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, Australia.ORCID 0000-0002-7384-7814
Zumin ShiFreemasons Foundation Centre for Men's Health, Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, Australia.
Sean MartinFreemasons Foundation Centre for Men's Health, Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, Australia.
Andrew VincentFreemasons Foundation Centre for Men's Health, Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, Australia.
Leonie HeilbronnFreemasons Foundation Centre for Men's Health, Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, Australia.
Gary WittertFreemasons Foundation Centre for Men's Health, Discipline of Medicine, School of Medicine, University of Adelaide, Adelaide, Australia.
Freemasons Foundation Centre for Men's Health · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextIn men, circulating 17β-estradiol originates primarily from peripheral aromatization of testosterone particularly in adipose tissue. The effect of ageing and obesity on circulating estradiol remains unclear.

objectiveDetermine five-year changes in serum estradiol and the association with testosterone and fat mass in Australian men.

designLongitudinal cohort study. At baseline and five-year follow-up, socio-demographic and health-related data including behaviors, chronic conditions, and medication use were collected by questionnaire. Estradiol and testosterone were assayed by liquid chromatography-tandem mass spectrometry and sex hormone-binding globulin by immunochemiluminescent assay. Fat mass was assessed by dual-energy X-ray absorptiometry.

participantsCommunity-dwelling men aged 35 years and older at enrollment, resident in the northern and western suburbs of Adelaide without established disease of, or medications affecting, the hypothalamus-pituitary-gonadal axis (n = 725).

main outcome measuresThe dependence of change in serum estradiol over five years on age, testosterone and fat mass after adjustment for multiple confounders.

resultsAt baseline, mean age was 53.0 ± 10.8 years. Mean serum estradiol levels at baseline and five-year follow-up were 94.9 ± 34.8 and 89.4 ± 30.4 pmol/L respectively (-1.1 pmol/L/year). On multivariable analyses, estradiol change was associated with changes in testosterone (B-estimate = 2.719, standard error = 0.369, p˂0.001), but not age or total fat mass. Change in testosterone/estradiol ratio was inversely associated with change in fat mass (B = -1.450, SE = 0.575, p = 0.012), and this was consistent across quartiles of fat mass change.

conclusionsIn healthy men, circulating estradiol is primarily dependent on testosterone. With increasing fat mass, estradiol decreases less than testosterone. From a clinical standpoint these data indicate that obesity is associated with a change in the testosterone to estradiol ratio, but a change in estradiol does not occur unless some other pathology is present.

Indexed as

Adipose TissueAdultAgedAged, 80 and overAge FactorsAgingAromataseAustraliaBiomarkersEstradiolGene ExpressionHumansLongitudinal StudiesMaleMiddle AgedRisk FactorsAromataseBiomarkersEstradiolTestosterone

Identifiers

PMID30071117
PMCPMC6072119
OpenAlexW2886236369

What OpenQuestion holds

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LicenceCC BY
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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.