Overview of Age-Related Immune System Changes In Cats
Age-related changes to the immune system are considered the main culprits of co-morbidities and are often associated with declines in life expectancy. While much of the research has been done in other species, increasing studies are correlating these changes in dogs and cats as well.
Potential age -associated changes in the feline immune response might be expected to be analogous to those of more well-characterised species, given that the types of age -associated pathologies found in cats parallel those observed in dogs, humans and rodent species.

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Variations in body condition score, inflammatory and ...
The present study aimed to identify immune , metabolic, and hematological biomarkers, among those commonly monitored in clinical practice, that are predictive of age-related behavioral and cognitive changes in clinically healthy elderly cats , with the objective of highlighting potential patterns of inflammaging.

Similar to that of humans and other species, the immune system of the cat is known to undergo multifactorial change with age , a process known as immunosenescence. 111 Although the body of literature describing immunosenescence in the cat is not as extensive as in many other species, there have been a number of feline-specific studies ...
Although aging changes in the respiratory health of geriatric humans have been well characterized, less is known about respiratory changes in old cats . in older humans, age-related changes include a decline in pul-monary elasticity, respiratory muscle strength and chest wall compliance.91 Alterations in immune function, in pulmonary beta-adreno ...