Evidence map›Paper›PMID 19622371›Full record

ArticleDevelopmental and comparative immunology2009

Variations in the expressed antimicrobial peptide repertoire of northern leopard frog (Rana pipiens) populations suggest intraspecies differences in resistance to pathogens.

Jacob A Tennessen, Douglas C Woodhams, Pierre Chaurand, Laura K Reinert, Dean Billheimer, Yu Shyr, Richard M Caprioli, Michael S Blouin, Louise A Rollins-Smith

Abstract read
In one paragraph

Article in Developmental and comparative immunology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing 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

39 citing papers in PubMed.

  1. Article
  2. Mitigation of chytridiomycosis onMicrobiology spectrum · 2025
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  13. Frogs adapt to physiologically costly anthropogenic noise.Proceedings. Biological sciences · 2018
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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

9 authors.

Jacob A TennessenDepartment of Zoology, Oregon State University, Corvallis, OR 97331, USA.
Douglas C Woodhams
Pierre Chaurand
Laura K Reinert
Dean Billheimer
Yu Shyr
Richard M Caprioli
Michael S Blouin
Louise A Rollins-Smith

Funding

Spatial Analysis of Molecules in Tissue using MALDI-MSR01GM058008 · NIGMS · VANDERBILT UNIVERSITY · PI CAPRIOLI, RICHARD M · 1998 to 2015
$5.8M
NIGMS NIH HHS 5R01GM58008-09NIGMS NIH HHS R01 GM058008
6 · The paper itself

Abstract

The northern leopard frog (Rana pipiens or Lithobates pipiens) is historically found in most of the provinces of Canada and the northern and southwest states of the United States. In the last 50 years, populations have suffered significant losses, especially in the western regions of the species range. Using a peptidomics approach, we show that the pattern of expressed antimicrobial skin peptides of frogs from three geographically separated populations are distinct, and we report the presence of four peptides (brevinin-1Pg, brevinin-1Pl, ranatuerin-2Pb, and ranatuerin-2Pc) that have not previously been found in skin secretions. The differences in expressed peptides reflect differences in the distribution of alleles for the newly described Brevinin1.1 locus in the three populations. When enriched peptide mixtures were tested for their ability to inhibit growth of the pathogenic amphibian chytrid (Batrachochytrium dendrobatidis), peptides from Minnesota or Vermont frogs were more effective that peptides from Michigan frogs. Four of the purified peptides were tested for their ability to inhibit growth of two bacterial pathogens (Aeromonas hydrophila and Staphylococcus epidermidis) and B. dendrobatidis. Three of the four were effective inhibitors of B. dendrobatidis and S. epidermidis, but none inhibited A. hydrophila. We interpret these differences in expression and activity of antimicrobial peptides as evidence to suggest that each population may have been selected to express a suite of peptides that reflects current and past encounters with skin microbes.

Indexed as

Genetics, PopulationGenetic VariationAeromonas hydrophilaAllelesAmino Acid SequenceAmphibian ProteinsAnimalsChytridiomycotaMicrobial ViabilityMolecular Sequence DataPeptidesRanidaeSkinStaphylococcus epidermidisUnited StatesAmphibian ProteinsPeptides

Identifiers

PMID19622371
PMCPMC2927990

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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.