Evidence map›Paper›PMID 25739514›Full record

ArticleExperimental dermatology2015

Comparative genomics reveals conservation of filaggrin and loss of caspase-14 in dolphins.

Bettina Strasser, Veronika Mlitz, Heinz Fischer, Erwin Tschachler, Leopold Eckhart

Open access · hybridAbstract readComparative Study
In one paragraph

Article in Experimental dermatology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

31 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Aqueous extracts ofFrontiers in pharmacology · 2025
    Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Cetacean epidermal specialization: A review.Anatomia, histologia, embryologia · 2022
    Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. The KEAP1/NRF2 Signaling Pathway in Keratinization.Antioxidants (Basel, Switzerland) · 2020
    Review
  19. Loricrin: Past, Present, and Future.International journal of molecular sciences · 2020
    Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Bettina StrasserResearch Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria.
Veronika Mlitz
Heinz Fischer
Erwin Tschachler
Leopold Eckhart
Medical University of Vienna · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The expression of filaggrin and its stepwise proteolytic degradation are critical events in the terminal differentiation of epidermal keratinocytes and in the formation of the skin barrier to the environment. Here, we investigated whether the evolutionary transition from a terrestrial to a fully aquatic lifestyle of cetaceans, that is dolphins and whales, has been associated with changes in genes encoding filaggrin and proteins involved in the processing of filaggrin. We used comparative genomics, PCRs and re-sequencing of gene segments to screen for the presence and integrity of genes coding for filaggrin and proteases implicated in the maturation of (pro)filaggrin. Filaggrin has been conserved in dolphins (bottlenose dolphin, orca and baiji) but has been lost in whales (sperm whale and minke whale). All other S100 fused-type genes have been lost in cetaceans. Among filaggrin-processing proteases, aspartic peptidase retroviral-like 1 (ASPRV1), also known as saspase, has been conserved, whereas caspase-14 has been lost in all cetaceans investigated. In conclusion, our results suggest that filaggrin is dispensable for the acquisition of fully aquatic lifestyles of whales, whereas it appears to confer an evolutionary advantage to dolphins. The discordant evolution of filaggrin, saspase and caspase-14 in cetaceans indicates that the biological roles of these proteins are not strictly interdependent.

Indexed as

Amino Acid SequenceAnimalsCaspase 14CattleConserved SequenceDolphinsEvolution, MolecularFilaggrin ProteinsGenomicsHumansIntermediate Filament ProteinsMolecular Sequence DataPhylogenySequence Homology, Amino AcidSpecies SpecificityWhalesCaspase 14Filaggrin ProteinsFLG protein, humanIntermediate Filament Proteinscaspase-14evolutionfilaggrinproteaseskin barrier

Identifiers

PMID25739514
PMCPMC4437054
OpenAlexW2057653740

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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.