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Published in: Sleep and Breathing 4/2019

01-12-2019 | Sleep Apnea | Sleep Breathing Physiology and Disorders • Original Article

Sleep apnea and galectin-3: possible sex-specific relationship

Authors: Mohita Singh, Craig L. Hanis, Susan Redline, Christie M. Ballantyne, Ihab Hamzeh, David Aguilar

Published in: Sleep and Breathing | Issue 4/2019

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Abstract

Purpose

Sleep apnea is associated with increased risk of cardiovascular disease. Elevated plasma galectin-3 levels, a biomarker associated with myocardial fibrosis, are also associated with adverse cardiovascular events, including heart failure. Our objective was to determine the relationship between severity of sleep apnea and plasma levels of galectin-3 and to determine whether this relationship was modified by sex.

Methods

We performed a cross-sectional study of 471 Mexican Americans from Starr County, TX who underwent an overnight, in-home sleep evaluation, and plasma measurement of galectin-3. Severity of sleep apnea was based on apnea hypopnea index (AHI). Multivariable linear regression modeling was used to determine the association between categories of sleep apnea and galectin-3. We also tested for interactions by sex.

Results

The mean age was 53 years, and 74% of the cohort was female. The prevalence of moderate to severe sleep apnea (AHI > 15 apnea–hypopnea events per hour) was 36.7%. Moderate to severe sleep apnea was associated with increased levels of galectin-3 in the entire population, but we identified a statistically significant interaction between galectin-3 levels and category of sleep apnea by sex (p for interaction = 0.02). Plasma galectin levels were significantly higher in women with moderate or severe sleep apnea than women with no/mild sleep apnea (multivariable adjusted p < 0.001), but not in men (p = 0.5).

Conclusions

Sleep apnea is associated elevated galectin-3 levels in women but not men. Our findings highlight a possible sex-specific relationship between sleep apnea and galectin-3, a biomarker of potential myocardial fibrosis that has been associated with increased cardiovascular risk.
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Metadata
Title
Sleep apnea and galectin-3: possible sex-specific relationship
Authors
Mohita Singh
Craig L. Hanis
Susan Redline
Christie M. Ballantyne
Ihab Hamzeh
David Aguilar
Publication date
01-12-2019
Publisher
Springer International Publishing
Published in
Sleep and Breathing / Issue 4/2019
Print ISSN: 1520-9512
Electronic ISSN: 1522-1709
DOI
https://doi.org/10.1007/s11325-019-01788-5

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