Pre-immunization of diet-induced obese male mice with inactivated pathogens increases power in a liraglutide intervention study

Caroline Falkenberg, Dorte B. Sørensen, Camilla H.F. Hansen, Martin F. Toft, Axel K. Hansen*

*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstract

Pre-immunization with inactivated antigens has been developed as an alternative to the use of ‘dirty’ mice, which in contrast to specific pathogen free (SPF) mice, harbour a range of pathogens. Within certain research areas, such mice are considered better models for humans than SPF mice, as they have an immune system that better mirrors human immunity. We inactivated murine adenovirus type 1 (FL), minute virus of mice, mouse hepatitis virus (A59), respirovirus muris (Sendai), Theiler’s encephalomyelitis virus (GD7) and Mycoplasma pulmonis by ultraviolet irradiation. We show that pre-immunization with these inactivated pathogens combined with adjuvant prior to the dietary induction of obesity in C57BL/6NTac mice substantially reduced the group sizes needed for showing an effect of the GLP-1 receptor analogue, liraglutide. Nesting, open field and novel object behaviours of the mice were unaffected. We conclude that pre-immunization with inactivated pathogens may be a simple tool to increase power in this type of intervention study on the DIO mouse model.

OriginalsprogEngelsk
TidsskriftLaboratory Animals
ISSN0023-6772
DOI
StatusE-pub ahead of print - 2025

Bibliografisk note

Funding Information:
This study was partly funded by the Centre for Applied Laboratory Animal Research (www.calar.dk) which is a collaboration between Novo Nordisk A/S, Lundbeck A/S and University of Copenhagen.

Publisher Copyright:
© The Author(s) 2024.

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