Evidence map›Paper›PMID 25766695›Full record

ArticleJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2015

Continuous Positive Airway Pressure Treatment Increases Serum Vitamin D Levels in Male Patients with Obstructive Sleep Apnea.

Claudio Liguori, Andrea Romigi, Francesca Izzi, Nicola Biagio Mercuri, Alberto Cordella, Enza Tarquini, Maria Pia Giambrone, Maria Grazia Marciani, Fabio Placidi

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 35 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 4 pooled it
4.3field-weighted citation impact, top 6% 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

35 citing papers in PubMed, 4 syntheses or guidelines pooled it, 65 citations in OpenAlex.

  1. Pooled it
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  5. Review
  6. Article
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  8. Vitamin D and Sleep Disorders.Advances in experimental medicine and biology · 2026
    Review
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  11. Review
  12. Continuous positive airway pressure treatment improves bone mineral density in men affected by severe obstructive sleep apnea syndrome.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2024
    Observational
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Claudio LiguoriUniversity of Rome "Tor Vergata," Department of Systems Medicine, Neurophysiopathology Unit, Sleep Medicine Centre, Rome, Italy.
Andrea RomigiUniversity of Rome "Tor Vergata," Department of Systems Medicine, Neurophysiopathology Unit, Sleep Medicine Centre, Rome, Italy.
Francesca IzziUniversity of Rome "Tor Vergata," Department of Systems Medicine, Neurophysiopathology Unit, Sleep Medicine Centre, Rome, Italy.
Nicola Biagio MercuriUniversity of Rome "Tor Vergata," Department of Systems Medicine, Neurophysiopathology Unit, Sleep Medicine Centre, Rome, Italy.
Alberto CordellaUniversity of Rome "Tor Vergata," Department of Systems Medicine, Neurophysiopathology Unit, Sleep Medicine Centre, Rome, Italy.
Enza TarquiniUniversity of Rome "Tor Vergata," Department of Systems Medicine, Neurophysiopathology Unit, Sleep Medicine Centre, Rome, Italy.
Maria Pia GiambroneUniversity of Rome "Tor Vergata," Department of Systems Medicine, Neurophysiopathology Unit, Sleep Medicine Centre, Rome, Italy.
Maria Grazia MarcianiFondazione Santa Lucia IRCCS, Rome, Italy.
Fabio PlacidiUniversity of Rome "Tor Vergata," Department of Systems Medicine, Neurophysiopathology Unit, Sleep Medicine Centre, Rome, Italy.
University of Rome Tor Vergata · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectiveRecent studies report a link between obstructive sleep apnea (OSA) syndrome, low vitamin D levels, and high parathyroid hormone (PTH) concentrations. The aim of the current study is to evaluate the effect of 7-night continuous positive airway pressure (CPAP) therapy on serum vitamin D, PTH, and calcium levels in patients with severe OSA syndrome.

methodsPatients with severe OSA were enrolled into the study and compared to control subjects. Patients with OSA underwent CPAP therapy for 7 nights and were consequently divided into responders (OSA-R, mean residual AHI < 5/h) and nonresponders (OSA-nR, mean residual AHI > 5/h). Serum vitamin D, PTH, and calcium levels were measured at baseline in patients with severe OSA (apnea-hypopnea index > 30/h) and control subjects. Patients with OSA underwent a final morning blood sample after 7-night CPAP therapy.

resultsWe enrolled 90 patients with OSA into the study (65 OSA-R and 25 OSA-nR) compared to 32 control subjects. At baseline, lower vitamin D and higher PTH levels were detected in the OSA group compared to controls. After 7-night CPAP therapy, male OSA-R patients showed a significant increase in vitamin D levels. Conversely, female OSA-R patients did not show the same increase in vitamin D levels. It was also observed that OSA-nR subjects did not show modifications of serum markers after nCPAP-therapy.

conclusionsThe study demonstrates that short-term nCPAP treatment is able to promote the recovery of vitamin D homeostasis in male patients with OSA. The mediation of sexual hormones in regulating vitamin D is a possible explanation of the lack of recovery of vitamin D homeostasis in female patients with OSA as it often affects postmenopausal women.

Indexed as

BiomarkersContinuous Positive Airway PressureHumansMaleMiddle AgedPolysomnographySleep Apnea, ObstructiveVitamin DBiomarkersVitamin DcalciumCPAPOSAPTHvitamin D

Identifiers

PMID25766695
PMCPMC4442220
OpenAlexW1749020410

What OpenQuestion holds

Textmetadata
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.