title: [Effect of lifestyle and health behavior on neutrophil function].
abstract: OBJECTIVE
  In this study, we investigated the relationships of neutrophil functions with lifestyle factors (namely, subjective stress, exercise habits, smoking habits, alcohol-drinking habits, and self-perceived status health) and health behavior in the Chinese urban elderly.
  
  
  METHODS
  We performed a health survey of the elderly aged 65 years or older living in Tianjin. The subjects were 42 males (69.1 ± 4.1 years old) and 41 females (69.1 ± 4.1 years old). Investigations of subjective stress, exercise habits, smoking habits, alcohol-drinking habits, and self-perceived health status were performed. The phagocytosis and superoxide productivity of neutrophils were measured by the nitroblue tetrazolium (NBT) reduction method. In addition, leukocyte count and serum total protein (TP) level were examined.
  
  
  RESULTS
  The investigations revealed the associations of health behavior (p<0.05) and self-perceived health (p<0.10) with the balance between phagocytosis and subsequent superoxide production.
  
  
  CONCLUSIONS
  The present study revealed that there were correlations of neutrophil functions with lifestyle factors (subjective stress, exercise habits, smoking habits, alcohol-drinking habits, and self-perceived status health) and health behavior in the Chinese urban elderly.
authors.affiliation: Department of Preventive Medicine and Health, Welfare and Medical Policy, Graduate School of Human Sciences Waseda University, Yokohama-city, Kanagawa, Japan. katayama@gancen.asahi.yokohama.jp
authors.forename: Kayoko
authors.initials: K
authors.lastname: Katayama
authors.forename: Meihua
authors.initials: M
authors.lastname: Wang
authors.forename: Namiko
authors.initials: N
authors.lastname: Ogawa
authors.forename: Satoyo
authors.initials: S
authors.lastname: Ikehara
authors.forename: Chun-Yan
authors.initials: CY
authors.lastname: Liu
authors.forename: Mu-Qun
authors.initials: MQ
authors.lastname: Xia
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Machida
mesh_terms: D000368:Aged; D002681:China; D005260:Female; D015438:Health Behavior; D006801:Humans; D008019:Life Style; D008297:Male; D009504:Neutrophils / Q000276:immunology*; D009580:Nitroblue Tetrazolium; D010587:Phagocytosis / Q000502:physiology; D013481:Superoxides / Q000378:metabolism
chemical_list: D013481:Superoxides; D009580:Nitroblue Tetrazolium