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Study · Measured the body's own peptide · 2012

2 results

Preliminary evidence for lowered basal cortisol in a naturalistic sample of methamphetamine polydrug users.

Carson DS, Bosanquet DP, Carter CS, Pournajafi-Nazarloo H, Blaszczynski A, McGregor IS

Experimental and clinical psychopharmacology15 Oct 2012Cited by 28 (Europe PMC)

PMID23066858 (opens in a new tab)DOI10.1037/a0029976 (opens in a new tab)PepBankPUB-23066858
Publisher pagePubMedAsk about this study
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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 study2

No result from this study comes from a test of the peptide.

Natural levels measured2

These results measure the body's own peptide. Nobody was given the peptide. They are not evidence about taking it. They are left out of key results, evidence counts and charts.

  1. 01HumanEndogenous levelObservational studyOther

    In methamphetamine polydrug users, basal plasma oxytocin was similar to that of matched controls.

    In plain wordsIn methamphetamine users, the body's own oxytocin level in blood was similar to that of matched controls.

    Peptide
    Oxytocin
    Outcome
    No significant changeBasal plasma oxytocin in methamphetamine users versus controls
    Study

    n = 29

    Comparator
    Matched controls
    Outcome group
    Sex hormones and fertility · Endocrine and hormones

    Source sentences

    Summary
    but similar basal plasma oxytocin and arginine vasopressin levels compared with controls.
    1 context sentence
    Summary · context
    Here we assessed basal plasma oxytocin, arginine vasopressin, and cortisol levels in a naturalistic sample of methamphetamine polydrug users (n = 12) compared with controls matched for age, gender, education, occupation status, and marital status (n = 17).

    This result measures the body's own Oxytocin. Nobody was given the peptide. It is not evidence about taking it.

  2. 02HumanEndogenous levelObservational studyOther

    Basal plasma oxytocin correlated positively with basal plasma arginine vasopressin in controls (p = .011) but not in methamphetamine users.

    In plain wordsIn controls, the body's own oxytocin and vasopressin levels rose together; this link was not found in methamphetamine users.

    Peptide
    Oxytocin
    Outcome
    MixedCorrelation of basal oxytocin with basal vasopressin
    Study

    n = 29

    Comparator
    Matched controls
    Outcome group
    Sex hormones and fertility · Endocrine and hormones

    Source sentences

    Summary
    Basal plasma oxytocin was positively correlated (p = .011), with basal plasma arginine vasopressin in controls, but not in methamphetamine users.
    1 context sentence
    Summary · context
    Here we assessed basal plasma oxytocin, arginine vasopressin, and cortisol levels in a naturalistic sample of methamphetamine polydrug users (n = 12) compared with controls matched for age, gender, education, occupation status, and marital status (n = 17).

    This result measures the body's own Oxytocin. Nobody was given the peptide. It is not evidence about taking it.

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

    11 Oct 2026, 01:30 UTC

    Study results updated

  2. Version 1

    9 Oct 2026, 02:50 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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