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Study · Measured the body's own peptide · 2007

6 results

Identification and quantification of thymosin beta4 in human saliva and tears.

Badamchian M, Damavandy AA, Damavandy H, Wadhwa SD, Katz B, Goldstein AL

Annals of the New York Academy of Sciences28 Jun 2007Cited by 37 (Europe PMC)

PMID17600285 (opens in a new tab)DOI10.1196/annals.1415.046 (opens in a new tab)PepBankPUB-17600285
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 study6

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

Natural levels measured6

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 people aged 15-20, 25-35 and over 50 years, the body's own thymosin beta‑4 was found in saliva samples in all age groups.

    In plain wordsThe body's own thymosin beta‑4 was found in human saliva in all three age groups.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    Not applicableThymosin beta-4 presence in saliva
    Study

    n = 60

    Outcome group
    Aging markers · Whole body

    Source sentences

    Summary
    Tbeta(4) was found in tear and saliva samples in all age groups.
    2 context sentences
    Summary · context
    Tear and saliva samples were analyzed by EIA to identify and quantify the amount of Tbeta(4) present.
    Summary · context
    Around 10-20 samples were collected from each of three different age groups: 15-20, 25-35, and >50 years old with n = 30 and n = 60 for tears and saliva, respectively.

    This result measures the body's own Thymosin beta-4 (human). Nobody was given the peptide. It is not evidence about taking it.

  2. 02HumanEndogenous levelObservational studyOther

    The body's own thymosin beta‑4 concentration in human saliva ranged from 0.2 to 3.6 mug/mL.

    In plain wordsNatural thymosin beta‑4 levels in human saliva ranged from 0.2 to 3.6 mug/mL.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    Not applicableThymosin beta-4 concentration in saliva
    Study

    n = 60

    Outcome group
    Aging markers · Whole body

    Measurements

    Thymosin beta-4 concentration
    0.2 to 3.6 mug/mL
    saliva

    Source sentences

    Summary
    The concentrations ranged from 0.5-7 mug/mL in tears and 0.2-3.6 mug/mL in saliva.
    2 context sentences
    Summary · context
    Tear and saliva samples were analyzed by EIA to identify and quantify the amount of Tbeta(4) present.
    Summary · context
    Around 10-20 samples were collected from each of three different age groups: 15-20, 25-35, and >50 years old with n = 30 and n = 60 for tears and saliva, respectively.

    This result measures the body's own Thymosin beta-4 (human). Nobody was given the peptide. It is not evidence about taking it.

  3. 03HumanEndogenous levelObservational studyOther

    In human saliva, the body's own thymosin beta‑4 concentration varied with age and appeared to peak at ages 25-35 years.

    In plain wordsNatural thymosin beta‑4 levels in saliva differed by age and seemed highest at ages 25-35.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    MixedThymosin beta-4 in saliva by age
    Study

    n = 60

    Outcome group
    Aging markers · Whole body

    Source sentences

    Summary
    In both fluids, Tbeta(4) concentration varied with age and appeared to peak at ages 25-35 years.
    2 context sentences
    Summary · context
    Tear and saliva samples were analyzed by EIA to identify and quantify the amount of Tbeta(4) present.
    Summary · context
    Around 10-20 samples were collected from each of three different age groups: 15-20, 25-35, and >50 years old with n = 30 and n = 60 for tears and saliva, respectively.

    This result measures the body's own Thymosin beta-4 (human). Nobody was given the peptide. It is not evidence about taking it.

  4. 04HumanEndogenous levelObservational studyOther

    In people aged 15-20, 25-35 and over 50 years, the body's own thymosin beta‑4 was found in tear samples in all age groups.

    In plain wordsThe body's own thymosin beta‑4 was found in human tears in all three age groups.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    Not applicableThymosin beta-4 presence in tears
    Study

    n = 30

    Outcome group
    Aging markers · Whole body

    Source sentences

    Summary
    Tbeta(4) was found in tear and saliva samples in all age groups.
    2 context sentences
    Summary · context
    Tear and saliva samples were analyzed by EIA to identify and quantify the amount of Tbeta(4) present.
    Summary · context
    Around 10-20 samples were collected from each of three different age groups: 15-20, 25-35, and >50 years old with n = 30 and n = 60 for tears and saliva, respectively.

    This result measures the body's own Thymosin beta-4 (human). Nobody was given the peptide. It is not evidence about taking it.

  5. 05HumanEndogenous levelObservational studyOther

    The body's own thymosin beta‑4 concentration in human tears ranged from 0.5 to 7 mug/mL.

    In plain wordsNatural thymosin beta‑4 levels in human tears ranged from 0.5 to 7 mug/mL.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    Not applicableThymosin beta-4 concentration in tears
    Study

    n = 30

    Outcome group
    Aging markers · Whole body

    Measurements

    Thymosin beta-4 concentration
    0.5 to 7 mug/mL
    tears

    Source sentences

    Summary
    The concentrations ranged from 0.5-7 mug/mL in tears and 0.2-3.6 mug/mL in saliva.
    2 context sentences
    Summary · context
    Tear and saliva samples were analyzed by EIA to identify and quantify the amount of Tbeta(4) present.
    Summary · context
    Around 10-20 samples were collected from each of three different age groups: 15-20, 25-35, and >50 years old with n = 30 and n = 60 for tears and saliva, respectively.

    This result measures the body's own Thymosin beta-4 (human). Nobody was given the peptide. It is not evidence about taking it.

  6. 06HumanEndogenous levelObservational studyOther

    In human tears, the body's own thymosin beta‑4 concentration varied with age and appeared to peak at ages 25-35 years.

    In plain wordsNatural thymosin beta‑4 levels in tears differed by age and seemed highest at ages 25-35.

    Peptide
    Thymosin beta-4 (human)
    Outcome
    MixedThymosin beta-4 in tears by age
    Study

    n = 30

    Outcome group
    Aging markers · Whole body

    Source sentences

    Summary
    In both fluids, Tbeta(4) concentration varied with age and appeared to peak at ages 25-35 years.
    2 context sentences
    Summary · context
    Tear and saliva samples were analyzed by EIA to identify and quantify the amount of Tbeta(4) present.
    Summary · context
    Around 10-20 samples were collected from each of three different age groups: 15-20, 25-35, and >50 years old with n = 30 and n = 60 for tears and saliva, respectively.

    This result measures the body's own Thymosin beta-4 (human). 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, 01:52 UTC

    Study results updated

  2. Version 1

    12 Oct 2026, 18:17 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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