title: Serum leptin levels may be correlated with cerebral infarction.
abstract: BACKGROUND
  To investigate the relation between serum leptin levels and cerebral infarction (CI) by meta-analysis.
  
  
  METHODS
  Scientific literature databases were searched for studies published in Chinese and English. After retrieving relevant articles through database searches and screening using predefined selection criteria, high-quality studies related to our research topic were selected for inclusion in this meta-analysis. All statistical analyses were conducted using Comprehensive Meta-Analysis 2.0 (CMA 2.0, Biostat Inc., Englewood, New Jersey, USA).
  
  
  RESULTS
  The study results revealed that serum leptin levels were significantly higher in CI patients as compared to normal controls. The outcomes of subgroup analysis by ethnicity suggested that the serum leptin levels in CI patients were significantly higher than normal controls in both Asian and Caucasian populations. Further, subgroup analysis based on the detection method indicated that the serum leptin levels in CI patients were significantly higher compared with normal controls when measured by radioimmunoassay (RIA) but enzyme-linked immunosorbent assay (ELISA)-based measurements did not show such statistically significant differences.
  
  
  CONCLUSIONS
  Our meta-analysis results suggest that serum leptin levels in CI patients may be closely correlated with CI risks.
authors.affiliation: Department of Neurological Rehabilitation, Zhengzhou Central Hospital, Zhengzhou University, Zhengzhou, People's Republic of China.
authors.forename: Kun-Bin
authors.initials: KB
authors.lastname: Li
authors.affiliation: Department of Neurological Rehabilitation, Zhengzhou Central Hospital, Zhengzhou University, Zhengzhou, People's Republic of China.
authors.forename: Xian-Li
authors.initials: XL
authors.lastname: Yao
authors.affiliation: Department of Neurological Rehabilitation, Zhengzhou Central Hospital, Zhengzhou University, Zhengzhou, People's Republic of China.
authors.forename: Ping-Ge
authors.initials: PG
authors.lastname: Sun
authors.affiliation: Department of Neurological Rehabilitation, Zhengzhou Central Hospital, Zhengzhou University, Zhengzhou, People's Republic of China.
authors.forename: Zhi-Yuan
authors.initials: ZY
authors.lastname: Wu
authors.affiliation: Department of Neurological Rehabilitation, Zhengzhou Central Hospital, Zhengzhou University, Zhengzhou, People's Republic of China.
authors.forename: Xiao-Xing
authors.initials: XX
authors.lastname: Li
authors.affiliation: Department of Neurological Rehabilitation, Zhengzhou Central Hospital, Zhengzhou University, Zhengzhou, People's Republic of China.
authors.forename: Jun-Qi
authors.initials: JQ
authors.lastname: Liu
authors.affiliation: Department of Rehabilitation Medicine, Zhengzhou Central Hospital, Zhengzhou University, Zhengzhou, People's Republic of China.
authors.forename: Yi-Lan
authors.initials: YL
authors.lastname: Li
keywords: Case-control study; cerebral infarction (CI); leptin; meta-analysis; serum levels