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Genetic variation among lambs in peripheral IgE activity against the larval stages of Teladorsagia circumcincta.

Authors
  • Murphy, L
  • Eckersall, P D
  • Bishop, S C
  • Pettit, J J
  • Huntley, J F
  • Burchmore, R
  • Stear, M J
Type
Published Article
Journal
Parasitology
Publication Date
Jul 01, 2010
Volume
137
Issue
8
Pages
1249–1260
Identifiers
DOI: 10.1017/S0031182010000028
PMID: 20233490
Source
Medline
License
Unknown

Abstract

IgA and IgE activity against Teladorsagia circumcincta was investigated in a flock of Texel lambs following natural, mixed nematode infection among lambs. The distribution of IgA activity was similar to a gamma distribution whereas IgE activity was different. Box-Cox analysis demonstrated that X0.25 was a suitable transformation to normalise IgE responses. The transformed IgE activity was under moderate to strong genetic control. Nine different allergens were identified by proteomic analysis. Tropomyosin was selected for further analysis. IgE activity against tropomyosin was moderately heritable and associated with decreased egg counts and with reduced body weight at the time of sampling.

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