In anesthetized rats, tetracosactide nasal bioavailability was 4.4%, compared with 24% after intramuscular administration.
In plain wordsIn rats, tetracosactide nasal bioavailability was lower than after intramuscular injection.
- Peptide
- Cosyntropin
- Outcome
- DecreaseNasal versus intramuscular bioavailability
- Study
ratsn: not reported in source
Anesthetized rats- Comparator
- Intramuscular tetracosactide
- Outcome group
- Pharmacokinetics · Pharmacology
- Studied dose
- Dose not stated · intranasalAs given in this study (rats).
Measurements
- Bioavailability
- 4.4%
- nasal
- Bioavailability
- 24%
- intramuscular
Source sentences
Nasal bioavailability was low (4.4%) compared to i.m. (24%).
3 context sentences(design, population, supporting numbers)
Nasal absorption of tetracosactide (ACTH1-24; Synacthen) was evaluated in anesthetized rats and compared to intravenous and intramuscular (i.m.) administration.
The effect of formulation additives on tetracosactide bioavailability was studied following modification of nasal saline solution. Poloxamer 407 (Pluronic F-127) was used as a vehicle for drug sustained release, whereas sodium glycocholate and bacitracin were used as enhancers.
Tetracosactide plasma levels were monitored with radioimmunoassay.