Evidence map›Paper›PMID 31549459›Full record

ArticleJournal of clinical laboratory analysis2020

Serum testosterone/cortisol ratio in people with obstructive sleep apnea.

Hiwa Mohammadi, Mohammad Rezaei, Amir Sharafkhaneh, Habibolah Khazaie, Mohammad Rasoul Ghadami

Open access · goldAbstract read
In one paragraph

Article in Journal of clinical laboratory analysis, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 12% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
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  13. Sarcopenia and nervous system disorders.Journal of neurology · 2022
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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

5 authors at 2 institutions in 2 countries.

Hiwa MohammadiSleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.ORCID https://orcid.org/0000-0002-2364-9430
Mohammad RezaeiSleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.ORCID https://orcid.org/0000-0002-2985-008X
Amir SharafkhanehDepartment of Medicine, Section of Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine, Houston, TX, USA.
Habibolah KhazaieSleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.ORCID https://orcid.org/0000-0003-1720-3720
Mohammad Rasoul GhadamiSleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Kermanshah University of Medical Sciences · IRBaylor College of Medicine · US

Funding

Research Council of Kermanshah University 95347
6 · The paper itself

Abstract

objectivesObstructive sleep apnea (OSA) is a major health problem that has been associated with endocrine dysfunction in the hypothalamic-pituitary-gonadal (HPG) and hypothalamic-pituitary-adrenal (HPA) axes. This study investigated cortisol, testosterone, and the testosterone/cortisol ratio in patients with OSA compared to normal sleepers.

methodsThirty-nine OSA patients diagnosed by overnight polysomnography (PSG) were divided into three groups, including ten mild OSA patients, 16 patients with moderate OSA, and 13 patients with severe OSA according to the apnea-hypopnea index (AHI). In addition, 13 normal sleepers with normal PSG findings were recruited as the control group. Serum levels of cortisol, testosterone, and sex hormone-binding globulin (SHBG) were measured using enzyme-linked immunosorbent assay (ELISA).

resultsThere were no significant differences between the normal sleepers and the three subtypes of OSA in terms of total and free testosterone levels (P > .1). The results showed significantly higher levels of cortisol in the severe OSA group compared to the normal sleepers and the two other subtypes of OSA (P < .01). In addition, the testosterone/cortisol (T/C) ratio was significantly lower among the severe OSA compared to the moderate OSA patients (P = .01). A significant correlation was observed between minimal SpO2 and AHI (r=-0.69, P < .01), cortisol and AHI (r = .47, P < .01) and cortisol and minimal SpO2 (r = -.26, P = .06).

conclusionAccording to the findings, OSA is linked to HPA axis activity in severe OSA patients but not among the mild and moderate subtypes of the disorder.

Indexed as

AdultBody Mass IndexFemaleHumansHydrocortisoneMaleMiddle AgedOxygenPartial PressurePolysomnographySleep Apnea, ObstructiveTestosteroneHydrocortisoneOxygenTestosteronecortisolHPA axisobstructive sleep apneatestosterone

Identifiers

PMID31549459
PMCPMC6977109
OpenAlexW2976950679

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.