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Allostatic load in rat model: An efficient tool for evaluating and understanding aging.

Dandan Chen¹, Xiaohong Deng¹, Yuxin Jia¹

¹Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.

Geriatrics & Gerontology International

|September 3, 2024

Summary

Allostatic load (AL) in aging rats reliably indicates cumulative aging changes. The study found that AL scores increased with age, demonstrating its utility in animal models.

Keywords:

aging allostatic load immunity

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Area of Science:

Gerontology
Animal models of aging
Biomedical research

Background:

Aging and age-related diseases pose significant public health challenges.
Allostatic load (AL) is a promising tool for assessing biological aging in humans.
There is a lack of research on AL in animal models of aging.

Purpose of the Study:

To investigate the utility of allostatic load (AL) as a measure of aging in a naturally aging rat model.
To establish a baseline for AL assessment in animal aging studies.

Main Methods:

A longitudinal study was conducted on aging rats.
Blood samples were collected at multiple ages (5, 8, 14, 18, 21 months).
Dozens of biochemical indicators were measured, including hormones, lipids, inflammatory markers, vitamin D, and immune cell parameters.

Main Results:

Allostatic load (AL) was calculated based on the measured biochemical indicators.
The AL score demonstrated a consistent increase with advancing age in the rat cohort.

Conclusions:

Allostatic load (AL) serves as a reliable indicator of cumulative and systemic aging processes.
This study validates the use of AL in animal models for aging research.