Florbetapir-fluorine-18
Florbetapir-fluorine-18 Uses, Dosage, Side Effects, Food Interaction and all others data.
Florbetapir-fluorine-18 is a radiopharmaceutical compound containing the radionuclide fluorine-18 bound to the compound florbetapir, a molecule that binds with high affinity to beta amyloid plaque, a peptide that plays a key role in Alzheimer's Disease pathogenesis. Marketed as the product Amyvid, florbetapir 18F is indicated for positron emission tomography (PET) imaging of the brain to estimate β-amyloid neuritic plaque density in adult patients with cognitive impairment who are being evaluated for Alzheimer's Disease (AD) and other causes of cognitive decline.
The radionucleide fluorine-18 was chosen as it has a half life of 110 minutes allowing it to accumulate sufficiently in the brain before undergoing positon emission decay.
Following intravenous injection, florbetapir F 18 diffuses across the human blood-brain barrier and produces a radioactivity signal detectable throughout the brain. Subsequently, cerebral perfusion decreases the brain florbetapir F 18 content, with differential retention of the drug in areas that contain β-amyloid aggregates compared to areas that lack the aggregates.
| Trade Name | Florbetapir-fluorine-18 |
| Generic | Florbetapir (18F) |
| Florbetapir (18F) Other Names | [18F]Florbetapir, Florbetapir (18F), Florbetapir F-18, Florbetapir F18, florbetapir-fluorine-18 |
| Type | |
| Formula | C20H25FN2O3 |
| Weight | Average: 359.432 Monoisotopic: 359.18745534 |
| Groups | Approved, Investigational |
| Therapeutic Class | |
| Manufacturer | |
| Available Country | |
| Last Updated: | September 19, 2023 at 7:00 am |
Uses
Florbetapir-fluorine-18 is a radiopharmaceutical diagnostic agent used during Positron Emission Tomography (PET) imaging of the brain to estimate β-amyloid neuritic plaque density in adult patients to diagnose the causes of cognitive impairment.
Florbetapir 18F is indicated for Positron Emission Tomography (PET) imaging of the brain to estimate β-amyloid neuritic plaque density in adult patients with cognitive impairment who are being evaluated for Alzheimer's Disease (AD) and other causes of cognitive decline.
Florbetapir-fluorine-18 is also used to associated treatment for these conditions: Alzheimer's Disease (AD)
How Florbetapir-fluorine-18 works
Florbetapir-fluorine-18 is a radiopharmaceutical compound containing the radionuclide fluorine-18 bound to the compound florbetapir, a molecule that binds with high affinity to beta amyloid plaque, a peptide that plays a key role in Alzheimer's Disease pathogenesis. The radionucleide fluorine-18 was chosen as it has a half life of 110 minutes allowing it to accumulate sufficiently in the brain before undergoing positon emission decay.
Toxicity
The most common reported adverse reaction was headache, occurring in 2% of patients, followed by musculoskeletal pain, blood pressure increased, fatigue, nausea, and injection site reaction, all occurring in <1% of patients.
Food Interaction
No interactions found.Elimination Route
The time-activity curves for florbetapir F 18 in the brain of subjects with positive scans show continual signal increases from time zero through 30 minutes post-administration, with stable values thereafter up to at least 90 minutes post-injection. Following the intravenous administration of 370 MBq (10 mCi) of florbetapir F 18 to healthy volunteers, the drug was distributed throughout the body with less than 5% of the injected F 18 radioactivity present in the blood by 20 minutes following administration, and less than 2% present by 45 minutes after administration.
Elimination Route
Whole body scanning following the intravenous injection showed accumulation of radioactivity in the liver within four minutes post-injection, followed by elimination of the radioactivity predominantly through the biliary/gastrointestinal tract with much lower radioactivity detected in the bladder. Essentially all radioactivity collected in the urine was present as polar metabolites of florbetapir F 18.
Innovators Monograph
You find simplified version here Florbetapir-fluorine-18
