title: [Plasma resistin level in obstructive sleep apnea hypopnea syndrome].
abstract: OBJECTIVE
  To explore the changes and clinical implications of plasma resistin level in obstructive sleep apnea hypopnea syndrome (OSAHS).
  
  
  METHODS
  Plasma resistin level was measured by radioimmunoassay in 30 obese OSAHS patients (obese OSAHS group), 7 in the low apnea hypopnea index (AHI) subgroup, 9 in the medium AHI subgroup, and 14 in the high AHI subgroup, 30 obese subjects (obese group), and 28 normal healthy adults (control group). Stepwise multiple linear regression analysis was conducted to determine the correlation of plasma resistin level with body mass index (BMI), body fat percentage, waist to hip ratio (WHR), fasting blood glucose (FBG), blood lipid, AHI, and lowest arterial oxygen saturation (LSaO(2)).
  
  
  RESULTS
  The plasma resistin levels of the obese OSAHS group and obese group were (8.48 +/- 1.44) and (7.60 +/- 1.53) microg/L respectively, both significantly higher than that of the control group [(5.78 +/- 1.62) microg/L, both P < 0.05], and that of the obese OSAHS group was significantly higher than that of the obese group (P < 0.05). The plasma resistin level of the high AHI obese OSAHS subgroup was (9.60 +/- 0.51) microg/L, significantly higher than those of the medium and low AHI obese OSAHS subgroups [(7.96 +/- 1.06) and (6.90 +/- 1.32) microg/L respectively, both P < 0.01]. Correlation analysis demonstrated that the fasting plasma resistin level was positively correlated with BMI, neck circumference, waist circumference, WHR, FBG, total cholesterol, triglyceride, and AHI (r = 0.52, 0.66, 0.74, 0.52, 0.59, 0.48, 0.46, and 0.80, all P < 0.05); and negatively correlated with high-density lipoprotein cholesterol and LSaO(2) (r = -0.52, r = -0.60, both P < 0.01). A stepwise multiple linear regression analysis showed that AHI was the most significant contributing factor for the increased plasma resistin level in the obese OSAHS group (R(2) = 0.618).
  
  
  CONCLUSIONS
  Plasma resistin level in obese OSAHS patients are increased, and are positively correlated with AHI. It may be used as an important biological index to evaluate the severity of OSAHS.
authors.affiliation: Department of Otorhinolaryngology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China. liminqsh@126.com
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Xiao-Guang
authors.initials: XG
authors.lastname: He
authors.forename: Shen-Hong
authors.initials: SH
authors.lastname: Qu
authors.forename: Hong-Mou
authors.initials: HM
authors.lastname: Zhan
authors.forename: Yi-Bing
authors.initials: YB
authors.lastname: Yang
authors.forename: Xin
authors.initials: X
authors.lastname: Xu
authors.forename: Yong-Feng
authors.initials: YF
authors.lastname: Si
mesh_terms: D000328:Adult; D001786:Blood Glucose; D015992:Body Mass Index; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000097:blood; D052243:Resistin / Q000097:blood*; D020181:Sleep Apnea, Obstructive / Q000097:blood*; D049629:Waist-Hip Ratio
chemical_list: D001786:Blood Glucose; D052243:Resistin