title: [Kynurenic acid concentration in blood and urine during normal pregnancy].
abstract: OBJECTIVE
  The aim of the study was to evaluate the concentrations of kynurenic acid (KYNA) in blood and urine during the normal pregnancy.
  
  
  METHODS
  Under the study were 37 pregnant women. Level of KYNA was measured by high performance liquid chromatography (HPLC).
  
  
  RESULTS
  The KYNA concentration in blood serum was 1.56 pmol/100 microliters and in urine -1.17 nmol/100 microliters (6.57 nmol/mg creatinine). The level of KYNA in blood serum did not correlate with the age of pregnancy. Statistically insignificant decrease of KYNA level in urine during the pregnancy was observed.
  
  
  CONCLUSIONS
  Decreasing of KYNA level in urine during the pregnancy independently from its blood level was observed. The studies on the KYNA's role outside the central nervous system may supplement the knowledge about the changes occurring during the pregnancy.
authors.affiliation: Kliniki Ginekologii II Katedry Połoznictwa i Chorób Kobiecych Akademii Medycznej w Lublinie.
authors.forename: P
authors.initials: P
authors.lastname: Milart
authors.forename: R
authors.initials: R
authors.lastname: Sikorski
mesh_terms: D000293:Adolescent; D000328:Adult; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D005260:Female; D006801:Humans; D007736:Kynurenic Acid / Q000097:blood* / Q000652:urine*; D011247:Pregnancy / Q000502:physiology*
chemical_list: D007736:Kynurenic Acid