title: [Absorption, distribution and elimination of (59)Fe- corn polysaccharide iron complex in rats: a study with radioactivity isotope tracing].
abstract: OBJECTIVE
  To establish a method for detecting plasma concentration of corn polysaccharide iron complex (CPIC) and investigate its absorption, distribution and elimination in rats.
  
  
  METHODS
  Using radioactivity isotope tracing method, we detected the radioactivity of (59)Fe-CPIC in the plasma of rats at different time points by gavages of 3 doses (28.0, 14.0, and 7.0 mg/kg) (59)Fe-CPIC in SD rats. The pharmacokinetic parameters was obtained using DAS 2.0 program for analysis of tissue distribution and elimination of (59)Fe-CPIC.
  
  
  RESULTS
  The standard curve was linear within the range of 0.14-141 µg/ml (r=0.9999, n=5). The average recovery was 95% with a relative standard deviation no more than 15%. The pharmacokinetic parameters at 3 doses obtained, namely t1/2 and AUC (0-), were 214∓104, 231∓110, and 181∓81 min, and 1986.3∓513.3, 737.0∓467.0, and 315.1∓226.1 mg·min-1·L(-)1, respectively. (59)Fe-CPIC were detected in all the 13 tissues types examined and high radioactivity intensity was found in the gastrointestinal tract, hematogenic organs and other organs rich in blood. (59)Fe-CPIC was eliminated after intragastric administration primarily via the feces in rats.
  
  
  CONCLUSIONS
  The method we established is easy and specific, and the pharmacokinetic parameters of (59)Fe-CPIC fit the two- compartment open model.
authors.affiliation: Department of Pharmacy, Wannan Medical College, Wuhu 241001, China.E-mail: mysteryzyy@163.com.
authors.forename: Yuyan
authors.initials: Y
authors.lastname: Zhou
authors.forename: Jianmin
authors.initials: J
authors.lastname: Liao
authors.forename: Zilong
authors.initials: Z
authors.lastname: Shen
mesh_terms: D000284:Administration, Oral; D000818:Animals; D019540:Area Under Curve; D056831:Coordination Complexes / Q000008:administration & dosage / Q000493:pharmacokinetics* / Q000652:urine; D005243:Feces / Q000737:chemistry; D005260:Female; D007408:Intestinal Absorption; D007501:Iron / Q000008:administration & dosage / Q000493:pharmacokinetics* / Q000652:urine; D007504:Iron Radioisotopes; D008297:Male; D011134:Polysaccharides / Q000008:administration & dosage / Q000302:isolation & purification / Q000493:pharmacokinetics* / Q000652:urine; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley; D014018:Tissue Distribution; D003313:Zea mays / Q000737:chemistry
chemical_list: D056831:Coordination Complexes; D007504:Iron Radioisotopes; D011134:Polysaccharides; D007501:Iron