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Study · Measured the body's own peptide · 1989

3 results

Thymosin alpha 1 in milk specimens from Guatemalan women.

Cruz JR, Naylor PH, Goldstein AL

Acta paediatrica Scandinavica1 Jul 1989Cited by 1 (Europe PMC)

PMID2782066 (opens in a new tab)DOI10.1111/j.1651-2227.1989.tb17930.x (opens in a new tab)PepBankPUB-02782066
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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 study3

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

Natural levels measured3

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 milk from Guatemalan women, all specimens collected 5 days after delivery contained measurable thymosin alpha‑1 (583 pg/ml mean).

    In plain wordsAll milk samples taken 5 days after birth contained measurable amounts of the body's own thymosin alpha‑1.

    Peptide
    Thymosin alpha-1
    Outcome
    Not applicableThymosin alpha 1 in milk 5 days postpartum
    Study

    n: not reported in source

    Outcome group
    Immune response · Immune and inflammation

    Measurements

    Mean thymosin alpha 1
    583 pg/ml
    milk 5 days postpartum

    Source sentences

    Summary
    All the specimens collected 5 days after delivery contained measurable levels (583 +/- 304 pg/ml) of thymosin alpha 1 but only 33% of those obtained 1-3 months postpartum and none collected thereafter did.
    1 context sentence
    Summary · context
    Thymosin alpha 1 was determined in milk samples obtained from 67 Guatemalan women 5 days, and 1-3 and 6-18 months postpartum.

    This result measures the body's own Thymosin alpha-1. Nobody was given the peptide. It is not evidence about taking it.

  2. 02HumanEndogenous levelObservational studyOther

    In milk from Guatemalan women, only 33% of specimens obtained 1-3 months postpartum contained measurable thymosin alpha‑1.

    In plain wordsOnly a third of milk samples taken 1 to 3 months after birth contained measurable amounts of the body's own thymosin alpha‑1.

    Peptide
    Thymosin alpha-1
    Outcome
    DecreaseProportion of milk specimens with measurable thymosin alpha 1 at 1-3 months
    Study

    n: not reported in source

    Outcome group
    Immune response · Immune and inflammation

    Measurements

    Specimens with measurable thymosin alpha 1
    33%
    milk 1-3 months postpartum

    Source sentences

    Summary
    All the specimens collected 5 days after delivery contained measurable levels (583 +/- 304 pg/ml) of thymosin alpha 1 but only 33% of those obtained 1-3 months postpartum and none collected thereafter did.
    1 context sentence
    Summary · context
    Thymosin alpha 1 was determined in milk samples obtained from 67 Guatemalan women 5 days, and 1-3 and 6-18 months postpartum.

    This result measures the body's own Thymosin alpha-1. Nobody was given the peptide. It is not evidence about taking it.

  3. 03HumanEndogenous levelObservational studyOther

    In milk from Guatemalan women, no specimen collected later than 3 months postpartum contained measurable thymosin alpha‑1.

    In plain wordsNo milk sample taken later than 3 months after birth contained measurable amounts of the body's own thymosin alpha‑1.

    Peptide
    Thymosin alpha-1
    Outcome
    DecreaseThymosin alpha 1 in milk after 3 months postpartum
    Study

    n: not reported in source

    Outcome group
    Immune response · Immune and inflammation

    Source sentences

    Summary
    All the specimens collected 5 days after delivery contained measurable levels (583 +/- 304 pg/ml) of thymosin alpha 1 but only 33% of those obtained 1-3 months postpartum and none collected thereafter did.
    1 context sentence
    Summary · context
    Thymosin alpha 1 was determined in milk samples obtained from 67 Guatemalan women 5 days, and 1-3 and 6-18 months postpartum.

    This result measures the body's own Thymosin alpha-1. 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 3Current

    10 Oct 2026, 08:55 UTC

    Study results updated

  2. Version 2

    9 Oct 2026, 03:03 UTC

    Study data updated · source update from Europe PMC

  3. Version 1

    9 Oct 2026, 03:02 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

Publication types

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