糖皮质激素受体mRNA在阻塞性睡眠呼吸暂停低通气综合征患者外周血单个核细胞中的表达

目的　探讨阻塞性睡眠呼吸暂停低通气综合征（OSAHS）患者外周血单个核细胞（peripheral blood mononuclear cell，PBMC）中糖皮质激素受体（glucocorticoid receptor，GR）mRNA的表达及其意义。方法　采用实时荧光定量PCR检测30例中重度男性OSAHS患者和27例正常男性PBMC中GRα mRNA和GRβmRNA的表达，探讨其与呼吸暂停低通气指数、体质量指数、颈围、腰围、最低动脉血氧饱和度、平均动脉血氧饱和度、Epworth嗜睡量表评分、空腹血糖、心率及血压之间的关系。结果　OSAHS组的GRα mRNA表达水平较对照组低（t =2.25，P <0.05）；GRβ mRNA的表达水平在两组间无显著差异（t =1.43，P >0.05）。在OSAHS组中并未发现GRαmRNA的表达与各参数之间存在显著相关性。结论　中重度男性OSAHS患者PBMC中GRα mRNA的表达水平较对照组下降，这种改变的机制目前尚不清楚。

Glucocorticoid receptors mRNA expression in peripheral blood mononuclear cell in patients with obstructive sleep apnea hypopnea syndrome

[ABSTRACT]OBJECTIVETo study the mRNA expression of glucocorticoid receptor(GR) in peripheral blood mononuclear cells in patients with obstructive sleep apnea hypopnea syndrome(OSAHS) and its clinical significance. METHODSReal-time fluorescent quantitative PCR was used to detect GRα mRNA and GRβ mRNA exprssion in PBMC of 30 male patients with moderate to severe OSAHS and 27 healthy male subjects. The relationships between the expression of glucocorticoid receptor mRNA and the apnea hypopnea index, body mass index, neck circumference, waist circumference, the lowest oxygen saturation, the average oxygen saturation, the Epworth sleepiness scale(ESS) score, fasting blood glucose, heart rate and blood pressure were analyzed.RESULTSCompared with the control group, the expression level of GRα mRNA was lower in the OSAHS group(t=2.25,P<0.05) and the expression level of GRβmRNA had no difference between the two groups(t=1.43, P>0.05). We had not found the significant correlation between the expression of GRα mRNA and the clinical parameters above in OSAHS patients.CONCLUSIONThe expression of GRα mRNA in PBMC in moderate to severe OSAHS male patients have a downward trend compared with healthy group, but the mechanism remains unclear.