Product Information
Registration Status: ActiveGALLIUM CITRATE (GA 67) INJECTION 37 MBQ/ML is approved to be sold in Singapore with effective from 1998-07-28. It is marketed by QT INSTRUMENTS (S) PTE LTD, with the registration number of SIN09913P.
This product contains Gallium Citrate 37 MBq/ml at ART in the form of INJECTION. It is approved for INTRAVENOUS use.
This product is manufactured by Mallinckrodt Medical B.V. in NETHERLANDS.
It is a Prescription Only Medicine that can only be obtained from a doctor or a dentist, or a pharmacist with a prescription from a Singapore-registered doctor or dentist.
Description
Gallium citrate Ga 67 is the citrate salt of the radioisotope gallium Ga 67. Although the mechanism is unknown, gallium Ga 67 concentrates in lysosomes and is bound to a soluble intracellular protein in certain viable primary and metastatic tumors and focal sites of inflammation, allowing scintigraphic localization. Ga-67 scintigraphy (GS) cannot differentiate between tumor and acute inflammation. [NCI Thesaurus]
Indication
Gallium Citrate Ga 67 Injection may be useful to demonstrate the presence and extent of Hodgkin's disease, lymphoma, and bronchogenic carcinoma. Positive gallium Ga-67 uptake in the absence of prior symptoms warrants follow-up as an indication of a potential disease state. Gallium Citrate Ga 67 Injection may be useful as an aid in detecting some acute inflammatory lesions.
Mechanism of Action
Gallium Citrate Ga 67, with no carrier added, has been found to concentrate in certain viable primary and metastatic tumors as well as focal sites of infection. The body generally handles Ga3+ as though it were ferric iron (Fe-III), and thus the free isotope ion is bound (and concentrates) in areas of inflammation, such as an infection site, and also areas of rapid cell division. Ga-67 binds to transferrin, leukocyte lactoferrin, bacterial siderophores, inflammatory proteins, and cell-membranes in neutrophils, both living and dead. Lactoferrin is contained within leukocytes. Ga-67 may bind to lactoferrin and be transported to sites of inflammation, or binds to lactoferrin released during bacterial phagocytosis at infection sites (and remains due to binding with macrophage receptors). Ga-67 also attaches to the siderophore molecules of bacteria themselves, and for this reason can be used in leukopenic patients with bacterial infection (here it attaches directly to bacterial proteins, and leukocytes are not needed). Uptake is thought to be associated with a range of tumour properties including transferring receptors, anaerobic tumor metabolism and tumor perfusion and vascular permeability.
Pharmacokinetics
- Absorption
- The body generally handles Ga3+ as though it were ferric iron (Fe-III). However, gallium can not be reduced in vivo. Therefore, ferric ion is easily reduced and interacts with protoporphyrin IX to form heme, gallium remains bound to iron-transport proteins and carrier molecules.
- Distribution
- Metabolism
- Elimination
Active Ingredient/Synonyms
Gallium (67 Ga) citrate | Gallium citrate Ga-67 | Gallium-67 Citrate | Gallium citrate Ga 67 |
Source of information: Drugbank (External Link). Last updated on: 3rd July 18. *Trade Name used in the content below may not be the same as the HSA-registered product.