title: [Serum resistin and leptin in patients with chronic obstructive pulmonary disease and their relationship to nutritional state].
abstract: OBJECTIVE
  To investigate the serum resistin and leptin levels, their relationship to nutritional state and the associated factors in patients with chronic obstructive pulmonary disease (COPD).
  
  
  METHODS
  The serum resistin and leptin levels in 57 stable COPD patients and 31 healthy controls were measured by enzyme-linked immunosorbent assay (ELISA) and radio-immunoassay respectively. Correlated factors of serum resistin and leptin were analyzed.
  
  
  RESULTS
  The serum resistin and leptin levels in COPD patients [(2.1 +/- 1.2), (0.65 +/- 0.41) microg/L] were significantly lower than those in the healthy controls [(3.6 +/- 2.3), (1.03 +/- 0.71) microg/L, all P < 0.01]. The serum resistin and leptin levels in patients with malnutrition [(1.7 +/- 0.7), (0.43 +/- 0.16) microg/L] were significantly lower than those in patients without malnutrition [(2.2 +/- 1.2), (0.73 +/- 0.48) microg/L, all P < 0.05]. The serum resistin level in the patients was correlated with the serum leptin level, forced expiratory volume in one second (FEV(1)), and FEV(1)/forced vital capacity (FVC) (r = 0.426 - 0.531, all P < 0.01). The serum leptin level in the patients was correlated with serum resistin, FEV(1)/FVC, body mass index (BMI), percentage of ideal body weight (IBW%), chest circumference and abdominal circumference (r = 0.371 - 0.580, all P < 0.01).
  
  
  CONCLUSIONS
  The serum resistin and leptin levels in stable COPD patients were significantly lower, especially in patients with malnutrition.
authors.affiliation: Institute of Respiratory Disease, First Affiliated Hospital, China Medical University, Shenyang 110001, China.
authors.forename: Qiu-yue
authors.initials: QY
authors.lastname: Wang
authors.forename: Hong
authors.initials: H
authors.lastname: Zhang
authors.forename: Xue
authors.initials: X
authors.lastname: Yan
authors.forename: Jian
authors.initials: J
authors.lastname: Kang
authors.forename: Run-jiang
authors.initials: RJ
authors.lastname: Yu
mesh_terms: D000328:Adult; D000368:Aged; D015992:Body Mass Index; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D020738:Leptin / Q000097:blood*; D008297:Male; D008875:Middle Aged; D009752:Nutritional Status; D029424:Pulmonary Disease, Chronic Obstructive / Q000097:blood* / Q000503:physiopathology; D052243:Resistin / Q000097:blood*
chemical_list: D020738:Leptin; D052243:Resistin