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[article]
Titre : |
Experiments done in Black-6 mice: what does it mean? |
Type de document : |
texte imprimé |
Auteurs : |
Johanna Åhlgren ; Vootele Voikar |
Année de publication : |
2019 |
Article en page(s) : |
p. 17-28 |
Langues : |
Anglais (eng) |
Résumé : |
Low replicability of animal experiments is perceived as a major hurdle in the field of biomedicine. Attempts to enhance the replicability and to reduce the variability in basic research has led to the recommendation to use isogenic mice. The C57BL/6 strain has evolved as a gold standard strain for this purpose. However, C57BL/6 mice are maintained as substrains by multiple vendors. Evidence exists that the subtle differences between these mouse lines have not been systematically investigated and are often ignored. In the present study, we characterized the female mice of two closely related substrains (C57BL/6J and C57BL/6N) from three vendors in Europe (Charles River Laboratories, Envigo, Janvier Labs) in a battery of behavioral tests. Our data show and confirm substantial behavioral differences between the C57BL/6J and C57BL/6N mice. Importantly, the substrain differences were largely affected by the origin of the animals, as a significant effect of vendor or interaction between the substrain and vendor occurred in all tests. This work highlights the importance of adhering to precise international nomenclature in all publications reporting animal experiments. Moreover, the generalization of research findings from a single mouse substrain can be seriously limited due to genetic drift and environmental variables occurring at different vendors. However, heterogenization of samples, by including animals of different substrains, can enhance generalizability. These issues need to be seriously addressed to improve reproducibility, replicability, and the translational potential of the mouse models. |
Permalink : |
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in LabAnimal > 7/19 (juillet 2019) . - p. 17-28
[article] Experiments done in Black-6 mice: what does it mean? [texte imprimé] / Johanna Åhlgren ; Vootele Voikar . - 2019 . - p. 17-28. Langues : Anglais ( eng) in LabAnimal > 7/19 (juillet 2019) . - p. 17-28
Résumé : |
Low replicability of animal experiments is perceived as a major hurdle in the field of biomedicine. Attempts to enhance the replicability and to reduce the variability in basic research has led to the recommendation to use isogenic mice. The C57BL/6 strain has evolved as a gold standard strain for this purpose. However, C57BL/6 mice are maintained as substrains by multiple vendors. Evidence exists that the subtle differences between these mouse lines have not been systematically investigated and are often ignored. In the present study, we characterized the female mice of two closely related substrains (C57BL/6J and C57BL/6N) from three vendors in Europe (Charles River Laboratories, Envigo, Janvier Labs) in a battery of behavioral tests. Our data show and confirm substantial behavioral differences between the C57BL/6J and C57BL/6N mice. Importantly, the substrain differences were largely affected by the origin of the animals, as a significant effect of vendor or interaction between the substrain and vendor occurred in all tests. This work highlights the importance of adhering to precise international nomenclature in all publications reporting animal experiments. Moreover, the generalization of research findings from a single mouse substrain can be seriously limited due to genetic drift and environmental variables occurring at different vendors. However, heterogenization of samples, by including animals of different substrains, can enhance generalizability. These issues need to be seriously addressed to improve reproducibility, replicability, and the translational potential of the mouse models. |
Permalink : |
./index.php?lvl=notice_display&id=80086 |
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