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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Urinary proteomics in obstructive sleep apnoea and obesity
Authors: Seetho, Ian W
Siwy, Justyna
Albalat, Amaya
Mullen, William
Mischak, Harald
Parker, Robert J
Craig, Sonya
Duffy, Nick
Hardy, Kevin J
Burniston, Jatin G
Wilding, John P H
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Keywords: Obesity
obstructive sleep apnoea
urinary proteomics
Issue Date: Nov-2014
Publisher: Wiley-Blackwell for Stichting European Society for Clinical Investigation Journal Foundation
Citation: Seetho IW, Siwy J, Albalat A, Mullen W, Mischak H, Parker RJ, Craig S, Duffy N, Hardy KJ, Burniston JG & Wilding JPH (2014) Urinary proteomics in obstructive sleep apnoea and obesity, European Journal of Clinical Investigation, 44 (11), pp. 1104-1115.
Abstract: Background:  Obstructive sleep apnoea (OSA) is a common complication of obesity and can have a substantial negative impact on a patient's quality of life and risk of cardiovascular disease. The aim of this case-control study was to undertake discovery profiling of urinary peptides using capillary electrophoresis-mass spectrometry (CE-MS) in obese subjects with and without OSA, without a history of coronary artery disease.  Materials and methods:  Urinary samples were analysed by CE-MS. Body composition and blood pressure measurements were recorded. Overnight polysomnography was conducted to confirm or refute OSA. OSA patients were naïve to continuous positive airway pressure treatment.  Results:  Sixty-one subjects with OSA (age 47 ± 9 years, BMI 43 ± 8 kg/m2) and 31 controls (age 49 ± 10 years, BMI 40 ± 5 kg/m2) were studied; P = ns for age and BMI. Apnoea-hypopnoea Index was higher in patients with OSA (24 ± 18·6) than controls without OSA (non-OSA) (2·6 ± 1·1; P < 0·0001). Metabolic syndrome was present in 35 (57%) of those with OSA compared with 4 (13%) of controls (P < 0·0001). Twenty-four polypeptides were candidates for differential distribution (P < 0·01), although these differences did not reach significance after multiple testing. Sequences were determined for eight peptides demonstrating origins from collagens and fibrinogen alpha.  Conclusions:  In this study, we report for the first time, urinary proteomic profile analyses using CE-MS in OSA and non-OSA obese groups. The differences in urinary proteomic profiles prior to adjustment for multiple testing, with increased metabolic syndrome in obese OSA subjects, suggest that there may be a role for CE-MS in characterising urinary profiles in severely obese populations with OSA. © 2014 Stichting European Society for Clinical Investigation Journal Foundation.
Type: Journal Article
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Affiliation: University of Liverpool
Mosaiques Diagnostics and Therapeutics AG
Complex Systems
University of Glasgow
University of Glasgow
Aintree University Hospital NHS
Aintree University Hospital NHS
Aintree University Hospital NHS
St Helens and Knowsley Hospitals NHS
Liverpool John Moores University
University of Liverpool

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