Overview
DESCRIPTION Indium In 111 Oxyquinoline (oxine) Solution is a diagnostic radiopharmaceutical intended for radiolabeling autologous leukocytes. It is supplied as a sterile, non-pyrogenic, isotonic aqueous solution with a pH range of 6.5 to 7.5 [sodium hydroxide and hydrochloric acid may be used to adjust the pH]. Each mL of the solution contains 37 MBq, 1 mCi of indium In 111 [no carrier added, >1.
Mechanism of Action
CLINICAL PHARMACOLOGY Indium forms a saturated (1:3) complex with oxyquinoline. The complex is neutral and lipid-soluble, which enables it to penetrate the cell membrane. Within the cell, indium becomes firmly attached to cytoplasmic components; the liberated oxyquinoline is released by the cell. It is thought likely that the mechanism of labeling cells with Indium In 111 Oxyquinoline Solution involves an exchange reaction between the oxyquinoline carrier and subcellular components which chelate indium more strongly than oxyquinoline. The low stability constant of the oxyquinoline complex, estimated at approximately 10, supports this theory.
Indications
- INDICATIONS AND USAGE Indium In 111 Oxyquinoline Solution is indicated for radiolabeling autologous leukocytes. Indium In 111 oxyquinoline labeled leukocytes may be used as an adjunct in the detection of inflammatory processes to which leukocytes migrate, such as those associated with abscesses or other infection, following reinjection and detection by appropriate imaging procedures. The degree of accuracy may vary with labeling techniques and with the size, location and nature of the inflammatory process.
Common Doses
- Refer to label
Dosage
DOSAGE AND ADMINISTRATION The recommended adult (70 kg) dose of indium In 111 oxyquinoline labeled autologous leukocytes is 7.4 to 18.5 MBq, 200 to 500 µCi. Indium In 111 Oxyquinoline Solution is intended for the radiolabeling of autologous leukocytes. The indium In 111 oxyquinoline labeled autologous leukocytes are administered intravenously. Imaging is recommended at approximately 24 hours post injection. Typically, anterior and posterior views of the chest, abdomen and pelvis should be obtained with other views as required.
Contraindications
- CONTRAINDICATIONS None known.
Side Effects
- ADVERSE REACTIONS Sensitivity reactions (urticaria) have been reported. The presence of fever may mask pyrogenic reactions from indium In 111 oxyquinoline labeled leukocytes. The possibility of delayed adverse reactions has not been studied.
Interactions
- No major interactions listed on the FDA label. Always consult a healthcare professional.