Immune aging in 80 laboratory Beagles and short-term geroprotective responses
In a cross-sectional cohort of 80 intact laboratory Beagles aged 1 to 11 years, immune aging was heterogeneous and non-linear, with sex-stratified cytokine patterns; a separate 90-day intervention in 24 young beagles was exploratory. [1]
Automatic summary · not editorially reviewed
The key findings
In a controlled cross-sectional cohort of 80 intact laboratory Beagles aged 1 to 11 years, canine immune aging was heterogeneous and non-linear. [1]
More cytokines varied significantly with age in males than in females, but age-by-sex interactions did not remain significant after false discovery rate correction. [1]
In 24 young beagles, a 90-day intervention with rapamycin, canagliflozin or dietary restriction yielded exploratory findings limited by small group sizes and endpoint-only cytokine measurements. [1]
The source at a glance
- Study type / format
- Controlled cross-sectional cohort study plus a short-term exploratory intervention study (abstract).
- Population / context
- 80 intact laboratory Beagles aged 1 to 11 years (cross-sectional cohort); separately 24 young beagles in a 90-day intervention.
- Summary based on
- Study abstract
- Original publication
- October 6, 2026
Cross-sectional immune profiles in 80 Beagles
The researchers characterized age-associated blood cell and serum cytokine profiles in a controlled cross-sectional cohort of 80 intact laboratory Beagles spanning 1 to 11 years. Canine immune aging was described as heterogeneous and non-linear. Several absolute leukocyte counts declined with age before rising again in geriatric dogs. Serum cytokines showed distinct, sex-stratified patterns.
Supporting source [1]
Sex differences and 90-day intervention in young beagles
More cytokines varied significantly with age in males than in females, but formal age-by-sex interactions did not remain significant after false discovery rate correction. Separately, 24 young beagles received rapamycin, canagliflozin or dietary restriction for 90 days. Rapamycin was associated with the broadest cytokine response. Canagliflozin showed narrower cytokine differences alongside descriptive body-weight reduction, while dietary restriction reduced body weight without altering measured immune endpoints.
Supporting source [1]
Exploratory limits of the intervention findings
The intervention findings remain exploratory and hypothesis-generating because of small group sizes and endpoint-only cytokine measurements. The cross-sectional design cannot establish causes or change over time; the authors present the work as a basis for future longitudinal studies. This explainer is based on the abstract only; the full text was not reviewed.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. The cross-sectional cohort cannot show causes or change over time. Intervention groups were small and cytokines were measured only at the endpoint, so those findings are exploratory and hypothesis-generating.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Lai M, Xu F, Xu Y, Mironenkov A, Jin Y, Zhang S, Pan J, Li M, Deng B, Zhu JK, Lyu YX. · europepmc.org · October 6, 2026