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Study · Animal study (in vivo) · rat · 1994

8 results

Effect of formulation additives upon the intranasal bioavailability of a peptide drug: tetracosactide (ACTH1-24).

Wüthrich P, Martenet M, Buri P

Pharmaceutical research1 Feb 1994Cited by 16 (Europe PMC)

Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: Publisher copyright. Results still quote short attributed sentences.

Results from this study8

8 results from studies that gave the peptide. No result from this study comes from people.

  1. 01AnimalAnimal study (in vivo)Pharmacokinetics

    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.

    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

    Summary
    Nasal bioavailability was low (4.4%) compared to i.m. (24%).
    3 context sentences
    Summary · context
    Nasal absorption of tetracosactide (ACTH1-24; Synacthen) was evaluated in anesthetized rats and compared to intravenous and intramuscular (i.m.) administration.
    Summary · context
    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.
    Summary · context
    Tetracosactide plasma levels were monitored with radioimmunoassay.
  2. 02AnimalAnimal study (in vivo)Pharmacokinetics

    In anesthetized rats, poloxamer 407 yielded a nonsignificant decrease in nasal tetracosactide bioavailability to 4%.

    In plain wordsIn rats, poloxamer did not significantly improve nasal tetracosactide bioavailability compared with the simple formulation.

    Outcome
    No significant changeBioavailability with poloxamer vehicle
    Study

    ratsn: not reported in source

    Anesthetized rats
    Comparator
    Nasal saline tetracosactide
    Outcome group
    Pharmacokinetics · Pharmacology
    Studied dose
    Dose not stated · intranasalAs given in this study (rats).

    Measurements

    Bioavailability
    4%
    poloxamer vehicle

    Source sentences

    Summary
    Poloxamer 407 addition did not improve drug kinetics profiles and showed a non-significant decrease in bioavailability (4%).
    3 context sentences
    Summary · context
    Nasal absorption of tetracosactide (ACTH1-24; Synacthen) was evaluated in anesthetized rats and compared to intravenous and intramuscular (i.m.) administration.
    Summary · context
    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.
    Summary · context
    Tetracosactide plasma levels were monitored with radioimmunoassay.
  3. 03AnimalAnimal study (in vivo)Pharmacokinetics

    In anesthetized rats, adding poloxamer 407 did not improve tetracosactide kinetic profiles.

    In plain wordsIn rats, poloxamer did not improve tetracosactide kinetics compared with the simple formulation.

    Outcome
    No significant changeKinetic profile with poloxamer vehicle
    Study

    ratsn: not reported in source

    Anesthetized rats
    Comparator
    Nasal saline tetracosactide
    Outcome group
    Pharmacokinetics · Pharmacology
    Studied dose
    Dose not stated · intranasalAs given in this study (rats).

    Source sentences

    Summary
    Poloxamer 407 addition did not improve drug kinetics profiles and showed a non-significant decrease in bioavailability (4%).
    3 context sentences
    Summary · context
    Nasal absorption of tetracosactide (ACTH1-24; Synacthen) was evaluated in anesthetized rats and compared to intravenous and intramuscular (i.m.) administration.
    Summary · context
    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.
    Summary · context
    Tetracosactide plasma levels were monitored with radioimmunoassay.
  4. 04AnimalAnimal study (in vivo)Pharmacokinetics

    In anesthetized rats, the sodium glycocholate formulation increased tetracosactide absorption threefold compared with the simple formulation.

    In plain wordsIn rats, nasal tetracosactide with sodium glycocholate produced threefold greater absorption than the simple formulation.

    Outcome
    IncreaseAbsorption with sodium glycocholate
    Study

    ratsn: not reported in source

    Anesthetized rats
    Comparator
    Simple nasal formulation
    Outcome group
    Pharmacokinetics · Pharmacology
    Studied dose
    Dose not stated · intranasalAs given in this study (rats).

    Measurements

    Absorption increase
    3 fold
    sodium glycocholate versus simple formulation

    Source sentences

    Summary
    Moreover, absorption was increased threefold compared to the simple formulation.
    4 context sentences
    Summary · context
    The sodium glycocholate effect was very fast (Tmax = 5 min), but did not last long.
    Summary · context
    Nasal absorption of tetracosactide (ACTH1-24; Synacthen) was evaluated in anesthetized rats and compared to intravenous and intramuscular (i.m.) administration.
    Summary · context
    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.
    Summary · context
    Tetracosactide plasma levels were monitored with radioimmunoassay.
  5. 05AnimalAnimal study (in vivo)Pharmacokinetics

    In anesthetized rats, tetracosactide with sodium glycocholate reached Tmax at 5 min, but the effect did not last long.

    In plain wordsIn rats, nasal tetracosactide with sodium glycocholate peaked at 5 min, but the effect was brief.

    Outcome
    Not applicableTime to peak with sodium glycocholate
    Study

    ratsn: not reported in source

    Anesthetized rats
    Outcome group
    Pharmacokinetics · Pharmacology
    Studied dose
    Dose not stated · intranasalAs given in this study (rats).

    Measurements

    Tmax
    5 min
    sodium glycocholate formulation

    Source sentences

    Summary
    The sodium glycocholate effect was very fast (Tmax = 5 min), but did not last long.
    3 context sentences
    Summary · context
    Nasal absorption of tetracosactide (ACTH1-24; Synacthen) was evaluated in anesthetized rats and compared to intravenous and intramuscular (i.m.) administration.
    Summary · context
    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.
    Summary · context
    Tetracosactide plasma levels were monitored with radioimmunoassay.
  6. 06AnimalAnimal study (in vivo)Pharmacokinetics

    In anesthetized rats, tetracosactide with bacitracin reached maximum plasma levels after 15 min.

    In plain wordsIn rats, nasal tetracosactide with bacitracin reached its highest blood level after 15 min.

    Outcome
    Not applicableTime to peak with bacitracin
    Study

    ratsn: not reported in source

    Anesthetized rats
    Outcome group
    Pharmacokinetics · Pharmacology
    Studied dose
    Dose not stated · intranasalAs given in this study (rats).

    Measurements

    Time to maximum plasma level
    15 min
    bacitracin formulation

    Source sentences

    Summary
    On the other hand, maximum tetracosactide levels in plasma were reached after 15 min for the formulation containing bacitracin as enhancer, and tetracosactide bioavailability was strongly increased, to 24%, i.e., as much as after an i.m. injection.
    3 context sentences
    Summary · context
    Nasal absorption of tetracosactide (ACTH1-24; Synacthen) was evaluated in anesthetized rats and compared to intravenous and intramuscular (i.m.) administration.
    Summary · context
    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.
    Summary · context
    Tetracosactide plasma levels were monitored with radioimmunoassay.
  7. 07AnimalAnimal study (in vivo)Pharmacokinetics

    In anesthetized rats, the bacitracin formulation increased tetracosactide bioavailability to 24%.

    In plain wordsIn rats, nasal tetracosactide with bacitracin increased bioavailability compared with the simple formulation.

    Outcome
    IncreaseBioavailability with bacitracin versus simple formulation
    Study

    ratsn: not reported in source

    Anesthetized rats
    Comparator
    Simple nasal formulation
    Outcome group
    Pharmacokinetics · Pharmacology
    Studied dose
    Dose not stated · intranasalAs given in this study (rats).

    Measurements

    Bioavailability
    24%
    bacitracin formulation

    Source sentences

    Summary
    On the other hand, maximum tetracosactide levels in plasma were reached after 15 min for the formulation containing bacitracin as enhancer, and tetracosactide bioavailability was strongly increased, to 24%, i.e., as much as after an i.m. injection.
    3 context sentences
    Summary · context
    Nasal absorption of tetracosactide (ACTH1-24; Synacthen) was evaluated in anesthetized rats and compared to intravenous and intramuscular (i.m.) administration.
    Summary · context
    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.
    Summary · context
    Tetracosactide plasma levels were monitored with radioimmunoassay.
  8. 08AnimalAnimal study (in vivo)Pharmacokinetics

    In anesthetized rats, nasal tetracosactide with bacitracin achieved 24% bioavailability, as much as an intramuscular injection.

    In plain wordsIn rats, nasal tetracosactide with bacitracin achieved the same bioavailability as an intramuscular injection.

    Outcome
    Not applicableBioavailability with bacitracin versus intramuscular administration
    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
    24%
    bacitracin formulation

    Source sentences

    Summary
    On the other hand, maximum tetracosactide levels in plasma were reached after 15 min for the formulation containing bacitracin as enhancer, and tetracosactide bioavailability was strongly increased, to 24%, i.e., as much as after an i.m. injection.
    3 context sentences
    Summary · context
    Nasal absorption of tetracosactide (ACTH1-24; Synacthen) was evaluated in anesthetized rats and compared to intravenous and intramuscular (i.m.) administration.
    Summary · context
    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.
    Summary · context
    Tetracosactide plasma levels were monitored with radioimmunoassay.

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    28 Oct 2026, 02:03 UTC

    Study results updated

  2. Version 1

    27 Oct 2026, 16:37 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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