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Changes and clinical significance of serum Nesfatin-1 level in patients with obstructive sleep apnea syndrome |
CAI Wencan LI Tong LIU Yanming QIAN Chunyan CHEN Weijuan |
Department of Laboratory, Yuebei People′s Hospital of Shaoguan City, Guangdong Province, Shaoguan 512026, China |
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Abstract Objective To investigate the expression of serum Nesfatin-1 in patients with obstructive sleep apnea syndrome (OSAS) and its clinical significance. Methods Fifty patients with OSAS admitted to Yuebei People′s Hospital of Shaoguan City, ("our hospital" for short) from June 2016 to June 2017 were selected as OSAS group and divided into mild subgroup (10 cases), moderate subgroup (24 cases) and severe subgroup (16 cases) according to apnea hypopnea index (AHI). Another 30 healthy subjects visited the physical examination center of our hospital in the same period were selected as control group. Serum Nesfatin-1 level, Epworth sleepiness scale (ESS) score, AHI, minimum oxygen saturation (LSaO2) and maximum apnea time (Tmax) were compared between OSAS group and control group. Serum Nesfatin-1 level, ESS score, LSaO2 and Tmax in different subgroups of OSAS were observed. Pearson correlation analysis was used to analyze the correlation between ESS score, AHI, Tmax and LSaO2 and serum Nesfatin-1 level. Subject working characteristic curve (ROC) was used to evaluate the diagnostic efficacy of Nesfatin-1 in OSAS. Results Serum Nesfatin-1 level, ESS score and AHI in OSAS group were significantly higher than those in control group, LSaO2 in OSAS group was significantly lower than that in control group, and Tmax in OSAS group was significantly longer than that in control group (P < 0.05). Serum Nesfatin-1 level, ESS score and Tmax in mild, moderate and severe subgroups increased with the severity of the disease, while LSaO2 decreased with the severity of the disease (P < 0.05). ESS score, AHI and Tmax in OSAS group were positively correlated with serum Nesfatin-1 level (r = 0.711, 0.621, 0.357, all P < 0.05), and LSaO2 was negatively correlated with serum Nesfatin-1 (r = 0.477, P < 0.05). The sensitivity and specificity of serum Nesfatin-1 (≥ 4.8 μg/L) for diagnosis of OSAS were 81.52% and 76.17% respectively. Conclusion The level of serum Nesfatin-1 in OSAS patients is abnormally elevated, and the degree of elevation is related to the severity of the disease, which has guiding significance for clinical diagnosis and treatment.
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