Evidence map›Paper›PMID 23239370›Full record

ArticleImmunogenetics2013

Characterization of MHC class I in a long-distance migrant shorebird suggests multiple transcribed genes and intergenic recombination.

Deborah M Buehler, Yvonne I Verkuil, Erika S Tavares, Allan J Baker

Open access · greenAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in Immunogenetics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.5field-weighted citation impact, top 35% 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

11 citing papers in PubMed, 19 citations in OpenAlex.

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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

4 authors at 2 institutions in 2 countries.

Deborah M BuehlerDepartment of Natural History, Royal Ontario Museum, Toronto, ON, Canada. d.buehler@utoronto.ca
Yvonne I Verkuil
Erika S Tavares
Allan J Baker
Royal Ontario Museum · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The major histocompatibility complex (MHC) includes highly polymorphic gene families encoding proteins crucial to the vertebrate acquired immune system. Classical MHC class I (MHCI) genes code for molecules expressed on the surfaces of most nucleated cells and are associated with defense against intracellular pathogens, such as viruses. These genes have been studied in a few wild bird species, but have not been studied in long-distance migrating shorebirds. Red Knots Calidris canutus are medium-sized, monogamous sandpipers with migratory routes that span the globe. Understanding how such long-distance migrants protect themselves from disease has gained new relevance since the emergence of avian-borne diseases, including intracellular pathogens recognized by MHCI molecules, such as avian influenza. In this study, we characterized MHCI genes in knots and found 36 alleles in eight individuals and evidence for six putatively functional and expressed MHCI genes in a single bird. We also found evidence for recombination and for positive selection at putative peptide binding sites in exons 2 and 3. These results suggest surprisingly high MHC diversity in knots, given their demographic history. This may be a result of selection from diverse pathogens encountered by shorebirds throughout their annual migrations.

Indexed as

Genes, MHC Class IRecombination, GeneticAmino Acid SequenceAnimal MigrationAnimalsCharadriiformesDNA, ComplementaryDNA, IntergenicEcosystemExonsGenetic VariationIntronsMolecular Sequence DataPhylogenyPolymerase Chain ReactionPolymorphism, GeneticDNA, ComplementaryDNA, IntergenicRNA, Messenger

Identifiers

PMID23239370
OpenAlexW2156294784

What OpenQuestion holds

Textmetadata
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.