Evidence map›Paper›PMID 31427524›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2019

Tissue-specific geometry and chemistry of modern and fossilized melanosomes reveal internal anatomy of extinct vertebrates.

Valentina Rossi, Maria E McNamara, Sam M Webb, Shosuke Ito, Kazumasa Wakamatsu

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.3field-weighted citation impact, top 8% of its field
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

21 citing papers in PubMed, 54 citations in OpenAlex.

  1. Article
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  3. From melanogenesis to melanin technologies.Communications chemistry · 2025
    Review
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  12. Review
  13. Prominent Roles and Conflicted Attitudes of Eumelanin in the Living World.International journal of molecular sciences · 2023
    Review
  14. Article
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  19. Recent advances in amniote palaeocolour reconstruction and a framework for future research.Biological reviews of the Cambridge Philosophical Society · 2020
    Article
  20. 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

5 authors at 3 institutions in 3 countries.

Valentina RossiSchool of Biological, Earth and Environmental Sciences, University College Cork, T23 TK30 Cork, Ireland; valentina.rossi@ucc.ie maria.mcnamara@ucc.ie.
Maria E McNamaraSchool of Biological, Earth and Environmental Sciences, University College Cork, T23 TK30 Cork, Ireland; valentina.rossi@ucc.ie maria.mcnamara@ucc.ie.
Sam M WebbSLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource (SSRL), Menlo Park, CA 94025.
Shosuke ItoDepartment of Chemistry, Fujita Health University School of Health Sciences, 470-1192 Toyoake, Aichi, Japan.
Kazumasa WakamatsuDepartment of Chemistry, Fujita Health University School of Health Sciences, 470-1192 Toyoake, Aichi, Japan.ORCID 0000-0003-1748-9001
Fujita Health University · JPUniversity College Cork · IESLAC National Accelerator Laboratory · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent discoveries of nonintegumentary melanosomes in extant and fossil amphibians offer potential insights into the physiological functions of melanin not directly related to color production, but the phylogenetic distribution and evolutionary history of these internal melanosomes has not been characterized systematically. Here, we present a holistic method to discriminate among melanized tissues by analyzing the anatomical distribution, morphology, and chemistry of melanosomes in various tissues in a phylogenetically broad sample of extant and fossil vertebrates. Our results show that internal melanosomes in all extant vertebrates analyzed have tissue-specific geometries and elemental signatures. Similar distinct populations of preserved melanosomes in phylogenetically diverse vertebrate fossils often map onto specific anatomical features. This approach also reveals the presence of various melanosome-rich internal tissues in fossils, providing a mechanism for the interpretation of the internal anatomy of ancient vertebrates. Collectively, these data indicate that vertebrate melanins share fundamental physiological roles in homeostasis via the scavenging and sequestering of metals and suggest that intimate links between melanin and metal metabolism in vertebrates have deep evolutionary origins.

Indexed as

Extinction, BiologicalFossilsVertebratesAnimalsMelaninsMelanosomesOrgan SpecificityMelaninsfossil melaninmetallomesoft tissuesynchrotron X-ray fluorescencetaphonomy

Identifiers

PMID31427524
PMCPMC6731645
OpenAlexW2969635298

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.