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EEG and task performance after ACTH4-10 in man.

W G Sannita, P Irwin, M Fink

    Neuropsychobiology
    |January 1, 1976
    PubMed
    Summary
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    The heptapeptide ACTH4-10 showed limited effects on brain function in healthy young men. While it did not impact EEG or behavior, it slightly improved performance on the digit span memory test.

    Area of Science:

    • Neuroscience
    • Psychopharmacology

    Background:

    • Adrenocorticotropic hormone (ACTH) and its fragments are known to influence cognitive functions.
    • The specific effects of the heptapeptide ACTH4-10 on human brain activity and cognition require further elucidation.

    Purpose of the Study:

    • To investigate the effects of the heptapeptide ACTH4-10 on electroencephalogram (EEG), memory, and behavior in healthy young males.
    • To assess the impact of a 60 mg intravenous dose of ACTH4-10 compared to a placebo.

    Main Methods:

    • A double-blind, placebo-controlled, Latin square design was employed with 12 healthy male volunteers under 30 years of age.
    • EEG was recorded for 2 hours post-administration and analyzed using power spectral density.
    • Cognitive function was assessed using various memory tests, including the digit span test.

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    Main Results:

    • No statistically significant differences were observed in EEG activity or behavioral measures between ACTH4-10 and placebo groups.
    • A statistically significant reduction in errors was noted on the digit span test with ACTH4-10 administration (p ≤ 0.05).
    • These findings align with previous research on ACTH4-10's limited cognitive impact.

    Conclusions:

    • An intravenous bolus of the heptapeptide ACTH4-10 demonstrates a limited effect on the specific brain functions and cognitive tests evaluated in this study.
    • The observed improvement in the digit span test suggests a potential, albeit narrow, impact on certain memory-related processes.
    • Further research may be warranted to explore dose-dependency and specific cognitive domains influenced by ACTH4-10.