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Study · Measured the body's own peptide · 2012

1 result

Age and estrogen-based hormone therapy affect systemic and local IL-6 and IGF-1 pathways in women.

Ahtiainen M, Pöllänen E, Ronkainen PH, Alen M, Puolakka J, Kaprio J, Sipilä S, Kovanen V

Age (Dordrecht, Netherlands)16 Aug 2011Cited by 29 (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 study1

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

Natural levels measured1

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 women, muscle gene expression of IGF-1 splice variant Ec was 40% lower in postmenopausal non-users of hormone therapy than in premenopausal women.

    In plain wordsIn women, the body's own IGF-1Ec in muscle was lower after menopause in women not using hormone therapy than in younger women.

    Outcome
    DecreaseMuscle IGF-1Ec expression, postmenopausal non-users vs premenopausal
    Study

    n: not reported in source

    Comparator
    Premenopausal women
    Outcome group
    Aging markers · Musculoskeletal

    Measurements

    IGF-1Ec expression difference
    −40%
    postmenopausal non-users vs premenopausal

    Source sentences

    Summary
    In muscle, the most notable changes were 28% lower gene expression of IGF-1 splice variant Ea (IGF-1Ea) and 40% lower expression of splice variant Ec (IGF-1Ec) in the postmenopausal non-users than in premenopausal women (p = 0.016 and 0.019, respectively), and 28% higher expression of IGF1-receptor…
    1 context sentence
    Summary · context
    in 30- to 35-year-old (n = 14) women (without hormonal contraceptives) and in 54- to 62-year-old monozygotic female twin pairs discordant for HRT (n = 11 pairs, mean duration of HRT 7.3 ± 3.7 years).

    This result measures the body's own MGF / PEG-MGF. 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

    13 Oct 2026, 21:44 UTC

    Study results updated

  2. Version 1

    13 Oct 2026, 16:31 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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