Evidence map›Paper›PMID 27921144›Full record

ArticleImmunogenetics2017

The genetic architecture of the MHC class II region in British Texel sheep.

Alsagher O A Ali, Abigail Stear, Karen Fairlie-Clarke, Gholamreza Nikbakht Brujeni, N Mahiza Md Isa, M Shahrom Bin Salisi, Katarzyna Donskow-Łysoniewska, David Groth, Johannes Buitkamp, Michael J Stear

Open access · hybridAbstract read
In one paragraph

Article in Immunogenetics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.5field-weighted citation impact, top 14% 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

5 citing papers in PubMed, 13 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

10 authors at 8 institutions in 7 countries.

Alsagher O A AliAnimal Medicine Department, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt.
Abigail StearInstitute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Garscube Campus, Bearsden Road, Glasgow, Scotland, G61 1QH, UK.
Karen Fairlie-ClarkeInstitute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Garscube Campus, Bearsden Road, Glasgow, Scotland, G61 1QH, UK.
Gholamreza Nikbakht BrujeniDepartment of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
N Mahiza Md IsaFaculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor Darul Ehsan, Malaysia.
M Shahrom Bin SalisiFaculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor Darul Ehsan, Malaysia.
Katarzyna Donskow-ŁysoniewskaDepartment of Parasitology, Institute of Zoology, Faculty of Biology, University of Warsaw, ul. Miecznikowa, 02-096, Warsaw, Poland.
David GrothSchool of Biomedical Sciences, CHIRI Biosciences Research Precinct, Faculty of Health Sciences, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia.
Johannes BuitkampBavarian State Research Center for Agriculture, Institute of Animal, Breeding, 85580, Grub, Germany.
Michael J StearInstitute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Garscube Campus, Bearsden Road, Glasgow, Scotland, G61 1QH, UK. m.stear@latrobe.edu.au.
Universiti Putra Malaysia · MYUniversity of Glasgow · GBBavarian State Research Center for Agriculture · DECurtin University · AULa Trobe University · AUSouth Valley University · EGUniversity of Tehran · IRUniversity of Warsaw · PL

Funding

Biotechnology and Biological Sciences Research Council BB/L004070/1
6 · The paper itself

Abstract

Understanding the structure of the major histocompatibility complex, especially the number and frequency of alleles, loci and haplotypes, is crucial for efficient investigation of the way in which the MHC influences susceptibility to disease. Nematode infection is one of the most important diseases suffered by sheep, and the class II region has been repeatedly associated with differences in susceptibility and resistance to infection. Texel sheep are widely used in many different countries and are relatively resistant to infection. This study determined the number and frequency of MHC class II genes in a small flock of Texel sheep. There were 18 alleles at DRB1, 9 alleles at DQA1, 13 alleles at DQB1, 8 alleles at DQA2 and 16 alleles at DQB2. Several haplotypes had no detectable gene products at DQA1, DQB1 or DQB2, and these were defined as null alleles. Despite the large numbers of alleles, there were only 21 distinct haplotypes in the population. The relatively small number of observed haplotypes will simplify finding disease associations because common haplotypes provide more statistical power but complicate the discrimination of causative mutations from linked marker loci.

Indexed as

AllelesAnimalsGene FrequencyGenes, MHC Class IIHaplotypesHLA AntigensHumansSheepWhite PeopleHLA AntigensClass II regionMajor histocompatibility complexPolymorphismSheepTexel breed

Identifiers

PMID27921144
PMCPMC5316411
OpenAlexW2558214260

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.