alexa Significance of Plasma Apoptosis Inhibitor of Macrophage Concentrations in Patients with Obstructive Sleep Apnea Syndrome: A New Biological Indicator of Severity and Treatment Responses | Abstract
ISSN: 2167-0277

Journal of Sleep Disorders & Therapy
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Research Article

Significance of Plasma Apoptosis Inhibitor of Macrophage Concentrations in Patients with Obstructive Sleep Apnea Syndrome: A New Biological Indicator of Severity and Treatment Responses

Fumitaka Mito1,2, Tsuguo Nishijima1*, Akira Suwabe2 and Shigeru Sakurai1

1Division of Behavioral Sleep Medicine, Iwate Medical University School of Medicine, Morioka, Japan

2Department of Laboratory Medicine, Iwate Medical University School of Medicine, Morioka, Japan

*Corresponding Author:
Tsuguo Nishijima
Department of Sleep Medicine
Iwate Medical University School of Medicine, Morioka, Japan
Tel: +81-19-651-5111, extn. 3357
E-mail: [email protected]

Received date: October 05, 2015 Accepted date: November 20, 2015 Published date: November 27, 2015

Citation:Mito F, Nishijima T, Suwabe A, Sakurai S (2015) Significance of Plasma Apoptosis Inhibitor of Macrophage Concentrations in Patients with Obstructive Sleep Apnea Syndrome: A New Biological Indicator of Severity and Treatment Responses. J Sleep Disord Ther 4:219. doi: 10.4172/2167-0277.1000219

Copyright: © 2015 Mahfouz RA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Background: It has been reported that a 10% increase in s body weight predicts a 6-fold increase in the odds of developing moderate to severe obstructive sleep apnea syndrome (OSAS). Blood levels of apoptosis inhibitor of macrophage (AIM), produced by macrophages, increase with obesity progression. We aimed to investigate the association between plasma AIM levels and OSAS severity. We hypothesized that plasma AIM levels are influenced by OSAS severity.

Methods: Plasma levels of AIM, monocyte chemotactic protein-1 (MCP-1), and ln high sensitivity-C-reactive protein were measured by ELISA in 97 male participants. Blood samples were obtained after overnight polysomnography (PSG) before and after nasal continuous positive airway pressure (nCPAP) treatment.

Results: In 97 OSAS patients, their plasma AIM levels were positively correlated with the apnea hypopnea index (AHI) (r=0.353, p=0.0003) and oxygen desaturation of >3% events per hour (r=0.302, p=0.0025). Plasma AIM levels were significantly higher in patients with moderate to severe OSAS (AHI 15; 1,144.3 ± 342.5 ng/mL, mean + SD) than in mild OSAS (5 AHI < 15; 895.5 ± 237.6 ng/mL) (p=0.0006). In 38 OSAS patients with AHI > 20, plasma AIM levels significantly decreased following nCPAP treatment (p<0.0001).

Conclusion: The present study is the first to show that patients with OSAS have elevated plasma AIM levels, and that these levels are influenced by AHI but not by weight.

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