title: Association of leukocyte count with varying degrees of glucose intolerance in Asian Indians: the Chennai Urban Rural Epidemiology Study (CURES-26).
abstract: OBJECTIVE
  This study assessed the association of leukocyte count with different grades of glucose intolerance in Asian Indian subjects.
  
  
  METHODS
  Three groups of subjects were recruited from the Chennai Urban Rural Epidemiology Study (CURES), a population-based study, representative of Chennai (formerly Madras), a city in southern India. Group 1 represented normal glucose tolerance (NGT) (n = 840), group 2 included impaired glucose tolerance (IGT) (n = 180), and group 3 included type 2 diabetes (n = 1170). Anthropometric measurements including weight, height, and waist measurements were obtained using standardized techniques. Leukocyte count was measured by an automated flow cytometry instrument (Sysmex SF-3000, Japan). Fasting insulin was measured by enzyme-linked immunosorbent assay and insulin resistance was calculated using the homeostasis model assessment (HOMA-IR).
  
  
  RESULTS
  Subjects with diabetes (8.0 +/- 1.5 x 10(3)/microL) and IGT (7.9 +/- 1.3 x 10(3)/microL) had a significantly higher mean leukocyte count compared to the NGT group (7.4 +/- 1.5 x 10(3)/microL) (P < 0.001). Leukocyte count was significantly increased in NGT subjects with insulin resistance (IR) as measured by HOMA-IR (7.5 +/- 1.5 x 10(3)/microL; P < 0.001) compared to NGT subjects without IR (7.0 +/- 1.4 x 10(3)/microL). Regression analysis showed that there was a linear increase in mean leukocyte count with increasing severity of glucose intolerance, even after adjusting for age, waist circumference, and HOMA-IR.
  
  
  CONCLUSIONS
  Among Asian Indians who are known to have high risk of premature coronary artery disease and diabetes, a significant association exists between leukocyte count and glucose intolerance.
authors.affiliation: Dr. Mohan's Diabetes Specialities Centre and Madras Diabetes Research Foundation, WHO Collaborating Centre for Noncommunicable Disease Prevention and Control, Gopalapuram, Chennai, India.
authors.forename: Kuppan
authors.initials: K
authors.lastname: Gokulakrishnan
authors.forename: Raj
authors.initials: R
authors.lastname: Deepa
authors.forename: Rangasamy
authors.initials: R
authors.lastname: Sampathkumar
authors.forename: Muthuswamy
authors.initials: M
authors.lastname: Balasubramanyam
authors.forename: Viswanathan
authors.initials: V
authors.lastname: Mohan
mesh_terms: D000328:Adult; D003324:Coronary Artery Disease / Q000209:etiology; D003924:Diabetes Mellitus, Type 2 / Q000097:blood / Q000453:epidemiology / Q000473:pathology; D016021:Epidemiologic Studies; D018149:Glucose Intolerance / Q000097:blood* / Q000453:epidemiology / Q000473:pathology; D005951:Glucose Tolerance Test; D006706:Homeostasis; D006801:Humans; D007194:India / Q000453:epidemiology; D007249:Inflammation / Q000097:blood / Q000150:complications; D007333:Insulin Resistance; D007958:Leukocyte Count; D008875:Middle Aged; D008954:Models, Biological; D012307:Risk Factors; D012424:Rural Population; D014505:Urban Population; D055105:Waist Circumference