Evidence map›Paper›PMID 40500530›Full record

ArticleImmunologic research2025

The relationship between self-reported immune fitness and salivary immune biomarker concentrations.

Emina Išerić, Pauline A Hendriksen, Guusje A Ulijn, Marit Zuurveld, Aurora Jae van de Loo, Johan Garssen, Joris C Verster

Abstract read
In one paragraph

Article in Immunologic research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Emina IšerićDivision of Pharmacology, Utrecht University, Utrecht Institute for Pharmaceutical Sciences, Universiteitsweg 99, Utrecht, 3584 CG, the Netherlands.ORCID http://orcid.org/0009-0000-5263-2833
Pauline A HendriksenDivision of Pharmacology, Utrecht University, Utrecht Institute for Pharmaceutical Sciences, Universiteitsweg 99, Utrecht, 3584 CG, the Netherlands.ORCID http://orcid.org/0000-0002-9030-4432
Guusje A UlijnDivision of Pharmacology, Utrecht University, Utrecht Institute for Pharmaceutical Sciences, Universiteitsweg 99, Utrecht, 3584 CG, the Netherlands.ORCID http://orcid.org/0009-0002-1898-8638
Marit ZuurveldDivision of Pharmacology, Utrecht University, Utrecht Institute for Pharmaceutical Sciences, Universiteitsweg 99, Utrecht, 3584 CG, the Netherlands.ORCID http://orcid.org/0000-0002-5948-0358
Aurora Jae van de LooDivision of Pharmacology, Utrecht University, Utrecht Institute for Pharmaceutical Sciences, Universiteitsweg 99, Utrecht, 3584 CG, the Netherlands.ORCID http://orcid.org/0000-0002-0016-9151
Johan GarssenDivision of Pharmacology, Utrecht University, Utrecht Institute for Pharmaceutical Sciences, Universiteitsweg 99, Utrecht, 3584 CG, the Netherlands.ORCID http://orcid.org/0000-0002-8678-9182
Joris C VersterDivision of Pharmacology, Utrecht University, Utrecht Institute for Pharmaceutical Sciences, Universiteitsweg 99, Utrecht, 3584 CG, the Netherlands. j.c.verster@uu.nl.ORCID http://orcid.org/0000-0002-6455-2096

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Immune fitness refers to the body's ability to respond to health challenges by activating an appropriate immune response. Perceived immune fitness can be assessed using a single-item scale ranging from 0 (very poor) to 10 (excellent). The aim of the current study (n = 29 healthy volunteers) was to evaluate the relationship between perceived immune fitness and immune biomarker concentrations in saliva. Hourly assessments of immune fitness were made throughout the day (09:30 - 15:30), and saliva samples were collected accordingly. The concentrations of interleukin (IL)-1β, IL-6, IL-8, and tumor necrosis factor-alpha (TNF-α) were determined using multiplex immunoassay. While immune fitness scores remained stable during the day, biomarker assessments showed some fluctuations. For IL-6, significant negative correlations were found between IL-6 concentration at 10:30 and immune fitness scores at 10:30 (r = -0.512), 11:30 (r = -0.383), and 12:30 (r = -0.443), and between the IL-6 concentration and immune fitness score at 15:30 (r = -0.704). For IL-8, significant correlations were found between IL-8 concentration at 10:30 and immune fitness scores at 10:30 (r = -0.480), 12:30 (r = -0.456), and 14:30 (r = -0.429). For TNF-α, significant positive correlations were found between TNF-α concentration at 13:30 and immune fitness scores at 13:30 (r = 0.517) and 14:30 (r = 0.477). No significant correlations were found between immune fitness and IL-1β. In conclusion, immune fitness scores remained stable throughout the day, and were significantly associated with salivary concentrations of IL-6, IL-8, and TNF-α at certain time points.

Indexed as

CytokinesSalivaAdultBiomarkersFemaleHealthy VolunteersHumansMaleMiddle AgedSelf ReportYoung AdultBiomarkersCytokinesBiomarkersImmune fitnessImmunitySalivaSelf-report

Identifiers

PMID40500530
PMCPMC12159093

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.