title: [Correlation of serum cystatin C with blood pressure: a cross-sectional study of 912 subjects].
abstract: OBJECTIVE
  To study the association between serum cystatin C level and blood pressure.
  
  
  METHODS
  We conducted a cross-sectional study of 912 subjects randomly sampled from a cohort visiting for routine physical examinations. The epidemiological data were obtained using questionnaires and from the database of physical examination results. Pearson analysis and multiple stepwise regression analysis were used to analyze the relationship between blood pressure and cystatin C.
  
  
  RESULTS
  The levels of serum cystatin C differed significantly among the normotensive, prehypertensive, and hypertensive subjects (P<0.05). Pearson analysis revealed that regardless of gender, serum cystatin C was positively correlated with SBP, DBP, MAP, BMI, TC, TG, LDL-C, UA and BUN (P<0.05). With MAP, SBP and DBP as dependent variables, multiple stepwise regression analysis of the factors affecting blood pressure indicated that cystatin C had the strongest effect on SBP and MAP (P<0.05) but did not significantly affect DBP (P>0.05).
  
  
  CONCLUSIONS
  Serum cystatin C level is significantly correlated with SBP and MAP and can be used as a biomarker for alert of hypertension.
authors.affiliation: Department of Clinical Laboratory, 2Department of Internal Medicine, Shenzhen People's Hospital, Shenzhen518109, China.E-mail: chenhx610@126.com.
authors.forename: Haixia
authors.initials: H
authors.lastname: Chen
authors.forename: Tiebing
authors.initials: T
authors.lastname: Wang
authors.forename: Qiu
authors.initials: Q
authors.lastname: Yang
authors.forename: Shuming
authors.initials: S
authors.lastname: Tang
mesh_terms: D015415:Biomarkers / Q000097:blood; D001794:Blood Pressure; D003430:Cross-Sectional Studies; D055316:Cystatin C / Q000097:blood*; D006801:Humans; D006973:Hypertension / Q000097:blood*
chemical_list: D015415:Biomarkers; D055316:Cystatin C