Increased biodiversity in the environment improves the humoral response of rats

Previous studies have compared the immune systems of wild and of laboratory rodents in an effort to determine how laboratory rodents differ from their naturally occurring relatives. This comparison serves as an indicator of what sorts of changes might exist between modern humans living in Western cu...

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Published in:PloS one 2015-04, Vol.10 (4), p.e0120255-e0120255
Main Authors: Pi, Cinthia, Allott, Emma H, Ren, Daniel, Poulton, Susan, Lee, S Y Ryan, Perkins, Sarah, Everett, Mary Lou, Holzknecht, Zoie E, Lin, Shu S, Parker, William
Format: Article
Language:English
Subjects:
Animals
Antibodies
Antigens
Antigens - immunology
Biodiversity
Body Weight - immunology
Colonization
Comparative analysis
Enrichment
Environmental aspects
Female
Health aspects
Housing
Immune response
Immune response (humoral)
Immune system
Immunity, Humoral
Immunization
Immunoglobulin E
Immunoglobulins - blood
Immunoglobulins - immunology
Immunology
Laboratory animals
Laboratory tests
Male
Rats
Rodents
T-Lymphocytes - immunology
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Parker, William
description Previous studies have compared the immune systems of wild and of laboratory rodents in an effort to determine how laboratory rodents differ from their naturally occurring relatives. This comparison serves as an indicator of what sorts of changes might exist between modern humans living in Western culture compared to our hunter-gatherer ancestors. However, immunological experiments on wild-caught animals are difficult and potentially confounded by increased levels of stress in the captive animals. In this study, the humoral immune responses of laboratory rats in a traditional laboratory environment and in an environment with enriched biodiversity were examined following immunization with a panel of antigens. Biodiversity enrichment included colonization of the laboratory animals with helminths and co-housing the laboratory animals with wild-caught rats. Increased biodiversity did not apparently affect the IgE response to peanut antigens following immunization with those antigens. However, animals housed in the enriched biodiversity setting demonstrated an increased mean humoral response to T-independent and T-dependent antigens and increased levels of "natural" antibodies directed at a xenogeneic protein and at an autologous tissue extract that were not used as immunogens.
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This comparison serves as an indicator of what sorts of changes might exist between modern humans living in Western culture compared to our hunter-gatherer ancestors. However, immunological experiments on wild-caught animals are difficult and potentially confounded by increased levels of stress in the captive animals. In this study, the humoral immune responses of laboratory rats in a traditional laboratory environment and in an environment with enriched biodiversity were examined following immunization with a panel of antigens. Biodiversity enrichment included colonization of the laboratory animals with helminths and co-housing the laboratory animals with wild-caught rats. Increased biodiversity did not apparently affect the IgE response to peanut antigens following immunization with those antigens. 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source Publicly Available Content Database; PubMed Central
subjects Animals
Antibodies
Antigens
Antigens - immunology
Biodiversity
Body Weight - immunology
Colonization
Comparative analysis
Enrichment
Environmental aspects
Female
Health aspects
Housing
Immune response
Immune response (humoral)
Immune system
Immunity, Humoral
Immunization
Immunoglobulin E
Immunoglobulins - blood
Immunoglobulins - immunology
Immunology
Laboratory animals
Laboratory tests
Male
Rats
Rodents
T-Lymphocytes - immunology
title Increased biodiversity in the environment improves the humoral response of rats
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