title: Biomarkers to improve diagnosis and monitoring of obstructive sleep apnea syndrome: current status and future perspectives.
abstract: Obstructive sleep apnea syndrome (OSAS) is characterized by recurrent episodes of upper airway collapse associated with oxygen desaturation and sleep disruption. It is proposed that these periodic changes lead to molecular variations that can be detected by assessing serum biomarkers. Studies have identified inflammatory, oxidative, and metabolic perturbations attributable to sleep-disordered breathing. Given that OSAS is associated with increased cardiovascular and cerebrovascular morbidity, the ideal biomarker should enable timely recognition with the possibility of intervention. There is accumulating data on the utility of serum biomarkers for the evaluation of disease severity, prognosis, and response to treatment. However, current knowledge is limited by data collection techniques, disease complexity, and potential confounding factors. The current paper reviews the literature on the use of serum biomarkers in OSAS. It is concluded that the ideal serum biomarker still needs to be discovered, while caution is needed in the interpretation of hitherto available results.
authors.affiliation: Department of Pneumonology, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece.
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Archontogeorgis
authors.affiliation: Laboratory of Hygiene and Environmental Protection, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece.
authors.forename: Evangelia
authors.initials: E
authors.lastname: Nena
authors.affiliation: Second Department of Internal Medicine, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece.
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Papanas
authors.affiliation: Department of Pneumonology, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece ; Sleep Unit, Department of Pneumonology, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece.
authors.forename: Paschalis
authors.initials: P
authors.lastname: Steiropoulos
mesh_terms: D015415:Biomarkers / Q000097:blood; D002097:C-Reactive Protein / Q000032:analysis; D015815:Cell Adhesion Molecules / Q000097:blood; D005340:Fibrinogen / Q000032:analysis; D006801:Humans; D007378:Interleukins / Q000097:blood; D018384:Oxidative Stress; D020181:Sleep Apnea, Obstructive / Q000097:blood / Q000175:diagnosis*; D014409:Tumor Necrosis Factor-alpha / Q000097:blood
chemical_list: D015415:Biomarkers; D015815:Cell Adhesion Molecules; D007378:Interleukins; D014409:Tumor Necrosis Factor-alpha; D005340:Fibrinogen; D002097:C-Reactive Protein