TY - JOUR T1 - Preparation, distribution, stability and tumor imaging properties of [62Zn] bleomycin complex in normal and tumor-bearing mice TT - JF - Int-J-Radiat-Res JO - Int-J-Radiat-Res VL - 1 IS - 1 UR - http://ijrr.com/article-1-6-en.html Y1 - 2003 SP - 37 EP - 44 KW - PET KW - pharmacokinetic KW - biodistribution KW - zinc-62 KW - bleomycin N2 - Backgrounds: Bleomycin (BLM) has been labeled with radioisotopes and widely used in therapy and diagnosis. In this study BLM was labeled with [62Zn] zinc chloride for oncologic PET studies. Materials and methods: The complex was obtained at the pH=2 in normal saline at 90 ° C in 60 min. Radio-TLC showed an overall radiochemical yield of 95-97% (radiochemical purity > 97%). Stability of complex was checked in vitro in mice and human plasma/urine. Results: Preliminary in vivo studies performed to determine complex stability and distribution of [62Zn] BLM in normal and fibrosarcoma-bearing mice. [62Zn] BLM accumulated significantly in induced fibrosarcoma tumors in mice according to bio-distribution/imaging studies. Conclusion: [62Zn] BLM can be used in PET oncology studies due to its suitable physico-chemical properties as a diagnostic complex in vitro and in vivo. Further studies should be performed for evaluation of the complex behavior in higher animals. Iran . J. Radiat. Res., 2003 1(1): 37 - 44. M3 ER -