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Open AccessArticle

Circulating Soluble Urokinase-Type Plasminogen Activator Receptor in Obstructive Sleep Apnoea

1
Department of Pulmonology, Semmelweis University, 1083 Budapest, Hungary
2
Department of Pulmonology, Szent Borbala County Hospital, 2800 Tatabánya, Hungary
3
Medical Imaging Centre, Semmelweis University, 1082 Budapest, Hungary
4
North West Lung Centre, Manchester University NHS Foundation Trust, Manchester M23 9LT, UK
*
Author to whom correspondence should be addressed.
Medicina 2020, 56(2), 77; https://doi.org/10.3390/medicina56020077
Received: 4 January 2020 / Revised: 27 January 2020 / Accepted: 5 February 2020 / Published: 14 February 2020
(This article belongs to the Special Issue Obstructive Sleep Apnea: Epidemiology, Pathomechanism and Treatment)
Background and Objectives: Obstructive sleep apnoea (OSA) is associated with heightened systemic inflammation and a hypercoagulation state. Soluble urokinase-type plasminogen activator receptor (suPAR) plays a role in fibrinolysis and systemic inflammation. However, suPAR has not been investigated in OSA. Materials and Methods: A total of 53 patients with OSA and 15 control volunteers participated in the study. Medical history was taken and in-hospital sleep studies were performed. Plasma suPAR levels were determined by ELISA. Results: There was no difference in plasma suPAR values between patients with OSA (2.198 ± 0.675 ng/mL) and control subjects (2.088 ± 0.976 ng/mL, p = 0.62). Neither was there any difference when patients with OSA were divided into mild (2.134 ± 0.799 ng/mL), moderate (2.274 ± 0.597 ng/mL) and severe groups (2.128 ± 0.744 ng/mL, p = 0.84). There was no significant correlation between plasma suPAR and indices of OSA severity, blood results or comorbidities, such as hypertension, diabetes, dyslipidaemia or cardiovascular disease. Plasma suPAR levels were higher in women when all subjects were analysed together (2.487 ± 0.683 vs. 1.895 ± 0.692 ng/mL, p < 0.01), and also separately in controls (2.539 ± 0.956 vs. 1.411 ± 0.534 ng/mL, p = 0.02) and patients (2.467 ± 0.568 vs. 1.991 ± 0.686 ng/mL, p < 0.01). Conclusions: Our results suggest that suPAR does not play a significant role in the pathophysiology of OSA. The significant gender difference needs to be considered when conducting studies on circulating suPAR. View Full-Text
Keywords: biomarkers; fibrinolysis; inflammation; OSAHS; sleep disordered breathing biomarkers; fibrinolysis; inflammation; OSAHS; sleep disordered breathing
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Bocskei, R.M.; Meszaros, M.; Tarnoki, A.D.; Tarnoki, D.L.; Kunos, L.; Lazar, Z.; Bikov, A. Circulating Soluble Urokinase-Type Plasminogen Activator Receptor in Obstructive Sleep Apnoea. Medicina 2020, 56, 77.

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