Lack of effect of a bisphosphonate (pamidronate disodium) infusion on subsequent skeletal uptake of Sm-153 EDTMP.
Patients who are candidates for samarium-153 ethylenediaminetetramethylenephosphonic acid (Sm-153 EDTMP) therapy often receive monthly infusions of pamidronate disodium or other bisphosphonates. Because both drugs are related compounds that concentrate in bone, it was advisable to determine whether previous bisphosphonate administration has blocked subsequent uptake of Sm-153 EDTMP. The authors compared skeletal uptake of Sm-153 EDTMP before and 1 to 4 days after pamidronate infusion in three patients with breast cancer metastatic to bone. In two of the patients, they continued to compare Sm-153 EDTMP uptake at approximately 1, 2, 3, and 4 weeks after pamidronate infusion. There was no difference in skeletal uptake of Sm-153 EDTMP before or at any time after pamidronate infusion. Pamidronate infusion did not interfere with skeletal uptake of Sm-153 EDTMP.
Marcus
Carol S
CS
Division of Nuclear Medicine, Department of Radiology, Harbor-UCLA Medical Center, Torrance, California, USA.
Saeed
Sohail
S
Mlikotic
Anton
A
Mishkin
Fred
F
Pham
H Lee
HL
Javellana
Theodomyllar
T
Diestelhorst
Saeda
S
Minami
Craig
C
D001859:Bone Neoplasms / Q000188:drug therapy / Q000556:secondary*; D001842:Bone and Bones / Q000378:metabolism*; D001943:Breast Neoplasms / Q000188:drug therapy / Q000532:radiotherapy*; D004164:Diphosphonates / Q000008:administration & dosage*; D004347:Drug Interactions; D004359:Drug Therapy, Combination; D006801:Humans; D009942:Organometallic Compounds / Q000008:administration & dosage* / Q000037:antagonists & inhibitors / Q000493:pharmacokinetics*; D009943:Organophosphorus Compounds / Q000008:administration & dosage* / Q000037:antagonists & inhibitors / Q000493:pharmacokinetics*; D000077268:Pamidronate; D011868:Radioisotopes / Q000008:administration & dosage / Q000493:pharmacokinetics; D013997:Time Factors; D014915:Whole-Body Counting
D004164:Diphosphonates; D009942:Organometallic Compounds; D009943:Organophosphorus Compounds; D011868:Radioisotopes; C061972:samarium Sm-153 lexidronam; D000077268:Pamidronate