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Artículos socios - Artículos
Serum proteomic changes in adults with obstructive sleep apnoea.
17/06/2014
Jurado-Gamez B, Gomez-Chaparro JL, Muñoz-Calero M, Serna Sanz A, Muñoz-Cabrera L, Lopez-Barea J, Gozal D.
J Sleep Res. 2012 Apr;21(2):139-46.

Abstract To examine whether differentially expressed proteins are present in the serum of patients with obstructive sleep apnoea (OSA), iTRAQ techniques (isobaric tags for relative and absolute quantification) were employed in a prospective study. Individuals were assigned to either a non-OSA control group (apnoea-hypopnoea index, AHI <years), the latter being then subdivided into three severity groups. A total of 103 proteins were identified with differential levels between patients with OSA and controls. Of these, 11 proteins were underexpressed and 19 were overexpressed in patients with OSA. C4BPA and thrombospondin were underexpressed in all three OSA severity groups. Among the overexpressed proteins, 13 were overexpressed in the mild OSA group, seven in the moderate group and five in the severe group. Analysis of interactions between the identified proteins revealed that protein alterations in OSA are primarily associated with derangements in lipid and vascular metabolic pathways. This study provides initial evidence that differential protein expression occurs in adults with OSA, and that such proteins change according to disease severity, and appear to primarily involve lipid and vascular metabolic pathways. 10.7 ± 45 = years) and 30 male patients in the OSA group (age 9.7 ± 45 = °C. Protein digestion and tagging with iTRAQ4plex® and mass spectrometry analysis was then performed (MALDI TOF/TOF). Ten male subjects were included in the control group (age 5) or an OSA group (AHI ≥5). Blood samples were collected, aliquoted and frozen at -80.


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