Evidence map›Paper›PMID 25943699›Full record

ArticleAge (Dordrecht, Netherlands)2015

Age-related variations of protein carbonyls in human saliva and plasma: is saliva protein carbonyls an alternative biomarker of aging?

Zhihui Wang, Yanyi Wang, Hongchen Liu, Yuwei Che, Yingying Xu, Lingling E

Abstract read
In one paragraph

Article in Age (Dordrecht, Netherlands), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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

18 citing papers in PubMed.

  1. Trial
  2. Biomarkers of Oxidative and Mitochondrial Stress Are Associated With Accelerated Pace of Aging at Midlife in a Birth Cohort.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
    Article
  3. Article
  4. Review
  5. Review
  6. Observational
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Effect ofEvidence-based complementary and alternative medicine : eCAM · 2019
    Article
  13. Review
  14. Article
  15. Article
  16. Redox theory of aging: implications for health and disease.Clinical science (London, England : 1979) · 2017
    Review
  17. Article
  18. Salivary markers of oxidative stress in oral diseases.Frontiers in cellular and infection microbiology · 2015
    Review
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

6 authors.

Zhihui WangDepartment of Stomatology, Hainan Branch of Chinese People's Liberation Army General Hospital, Sanya, China, 572013.
Yanyi Wang
Hongchen Liu
Yuwei Che
Yingying Xu
Lingling E

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Free radical hypothesis which is one of the most acknowledged aging theories was developed into oxidative stress hypothesis. Protein carbonylation is by far one of the most widely used markers of protein oxidation. We studied the role of age and gender in protein carbonyl content of saliva and plasma among 273 Chinese healthy subjects (137 females and 136 males aged between 20 and 79) and discussed the correlation between protein carbonyl content of saliva and plasma. Protein carbonyl content of saliva and plasma were, respectively, 2.391 ± 0.639 and 0.838 ± 0.274 nmol/mg. Variations of saliva and plasma different age groups all reached significant differences in both male and female (all p < 0.05) while both saliva and plasma protein carbonyls were found to be significantly correlated with age (r = 0.6582 and r = 0.5176, all p < 0.001). Gender was discovered to be unrelated to saliva and plasma protein carbonyl levels (all p > 0.05). Saliva and plasma protein carbonyls were positively related (r = 0.4405, p < 0.001). Surprisingly, saliva and plasma protein carbonyls/ferric reducing ability of plasma (FRAP) ratios were proved to be significantly correlated with age (r = 0.7796 and r = 0.6938, all p < 0.001) while saliva protein carbonyls/FRAP ratio and plasma protein carbonyls/FRAP ratio were also correlated (r = 0.5573, p < 0.001). We concluded that saliva protein carbonyls seem to be an alternative biomarker of aging while the mechanisms of protein carbonylation and oxidative stress and the relationship between saliva protein carbonyls and diseases need to be further investigated.

Indexed as

AgingAdultAgedBiomarkersCross-Sectional StudiesEnzyme-Linked Immunosorbent AssayFemaleHumansMaleMiddle AgedOxidative StressProtein CarbonylationSalivaBiomarkers

Identifiers

PMID25943699
PMCPMC4420756

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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.