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Association between continuous positive airway pressure and circulating omentin levels in patients with obstructive sleep apnoea

Uygur F. | Tanrıverdi H. | Can M. | Erboy F. | Altınsoy B. | Atalay F. | Ornek T.

Article | 2016 | Sleep and Breathing20 ( 3 ) , pp.939 - 945

Purpose: Inflammation and oxidative stress play important roles in the pathogenesis of obstructive sleep apnoea syndrome (OSAS). Omentin is expressed in visceral adipose tissue and is associated with the inflammatory response. The aim of this study was to assess the relationship between OSAS and omentin based on a comparison of its serum levels at baseline and after 3 months of continuous positive airway pressure (CPAP) therapy. Methods: Ninety-six newly diagnosed OSAS patients and 31 non-apnoeic controls were enrolled in this study. Blood samples were obtained in the morning after polysomnography. Within the OSAS group, 30 patients . . . were started on CPAP therapy and then reassessed clinically, including a blood test for serum omentin and other biochemical analysis, at 3 months. Results: Serum omentin levels were significantly lower in the OSAS group than in the control group (27.7 ± 7.6 and 42.5 ± 5.2 ng/mL, P < 0.001). In the subgroup analysis, omentin concentrations were significantly lower in patients with severe OSAS than in those with mild/moderate OSAS (P < 0.001). Circulating omentin levels were significantly correlated with the apnoea–hypopnoea index (AHI), mean SaO2, oxygen desaturation index, and serum C-reactive protein levels. Treatment with CPAP resulted in a significant increase in circulating omentin levels after 3 months, from 22.7 ± 1.4 to 41.2 ± 3.3 ng/mL (P < 0.001). Conclusions: OSAS is associated with low serum omentin levels, and these levels can be reversed by effective CPAP treatment. © 2016, Springer-Verlag Berlin Heidelberg Daha fazlası Daha az

The prevalence of microalbuminuria and relevant cardiovascular risk factors in Turkish hypertensive patients

Kozan Ö. | Özcan E.E. | Sancaktar O. | Kabakci G. | Sözcüer A.H. | Kerpeten A. | Delice A.

Article | 2011 | Turk Kardiyoloji Dernegi Arsivi39 ( 8 ) , pp.635 - 645

Objectives: A growing body of data illustrates the importance of microalbuminuria (MAU) as a strong predictor of cardiovascular risk in the hypertensive population. The present study was designed to define the prevalence of MAU and associated cardiovascular risk factors among Turkish hypertensive outpatients. Study design: Representing the Turkish arm of the multinational i-SEARCH study involving 1,750 sites in 26 countries around the world, a total of 1,926 hypertensive patients from different centers were included in this observational and cross-sectional survey study. Patients with reasons for a false-positive MAU test were exclu . . .ded. The prevalence of MAU was assessed using a dipstick test, and patients were inquired about comorbidities, comedication, and known cardiovascular risk factors. Results: The overall prevalence of MAU was 64.7% and there was no difference between genders. Most of the patients (82.5%) had uncontrolled hypertension, 35.6% had dyslipidemia, and 35.5% had diabetes, predominantly type 2. Almost one-third of the patients (26.4%) had at least one cardiovascular-related comorbidity, with 20.3% having documented coronary artery disease (CAD). Almost all patients (96.8%) had one or more risk factors for cardiovascular disease in addition to hypertension, including family history of myocardial infarction or CAD, diabetes, dyslipidemia, lack of physical exercise, and smoking. A trend towards higher MAU values in the presence of CAD was determined. Conclusion: Microalbuminuria tests should be routinely used as a screening and monitoring tool for the assessment of subsequent cardiovascular morbidity and mortality among hypertensive patients. © 2011 Turkish Society of Cardiology Daha fazlası Daha az

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