Systemic prostacyclin and thromboxane production in obstructive sleep apnea.

Abstract:

PURPOSE:Obstructive sleep apnea increases the risk of cardiovascular diseases. Alternations in prostacyclin and thromboxane concentrations and balance could constitute one of mechanisms linking sleep apnea and cardiovascular events. Thus we aimed to assess the concentrations of 6-keto-prostaglandin F1α (6-keto-PGF1α) (metabolite of prostacyclin) and thromboxane B2 (TXB2) (metabolite of thromboxane A2) in urine and blood of obstructive sleep apnea patients and controls (snoring subjects with otherwise normal polysomnogram). MATERIAL AND METHODS:Overnight urine and morning blood samples were taken from subjects and controls at baseline and in sleep apnea group during continuous positive airway pressure (CPAP) treatment. Samples were analyzed using mass chromatography/gas spectrometry. RESULTS:We analyzed data from 26 obstructive sleep apnea subjects (mean apnea-hypopnea index 45.4±17.3) and 22 well-matched controls. At baseline sleep apnea patients, when compared to controls, have higher 6-keto-PGF1α in urine (0.89±0.15 vs 0.34±0.06, p=0.01) and blood (24.49±1.54 vs 19.70±1.77, p=0.04). TXB2 levels in urine and blood were not different across groups. CPAP treatment significantly decreased 6-keto-PGF1α in urine (0.92±0.17 vs 0.22±0.10, p=0.04), but not in blood. TXB2 levels during CPAP treatment did not change significantly. CONCLUSIONS:These results suggest augmented systemic prostacyclin production in obstructive sleep apnea patients, which potentially could constitute a protective mechanism against detrimental effects of sleep apnea.

journal_name

Adv Med Sci

authors

Mejza F,Kania A,Nastalek P,Nizankowska-Jedrzejczyk A,Nizankowska-Mogilnicka E

doi

10.1016/j.advms.2015.12.001

subject

Has Abstract

pub_date

2016-03-01 00:00:00

pages

154-9

issue

1

eissn

1896-1126

issn

1898-4002

pii

S1896-1126(15)00083-8

journal_volume

61

pub_type

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