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Related Experiment Video

Updated: Jan 25, 2026

Author Spotlight: Targeted Microinjection and Electroporation of Primate Cerebral Organoids for Genetic Modification

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An Emergent Integrated Aging Process Conserved Across Primates.

Tina W Wey¹, Émy Roberge¹, Véronique Legault¹

¹Groupe de recherche PRIMUS, Department of Family Medicine, University of Sherbrooke, Canada.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences

|May 3, 2019

Summary

This summary is machine-generated.

Integrated albunemia, a conserved physiological process, increases with age across primate species. This aging biomarker is generally linked to aging but not necessarily to survival outcomes.

Keywords:

Biomarkers Mortality risk Nonhuman models Physiological networks Principal component analysis

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Area of Science:

Gerontology
Comparative Biology
Physiological Networks

Background:

Aging is a complex process influenced by integrated physiological networks.
Principal component analysis (PCA) identified "integrated albunemia" as a key aging biomarker in humans.
Integrated albunemia showed stronger associations with age and mortality than individual biomarkers in humans.

Purpose of the Study:

To investigate the presence and characteristics of integrated albunemia in nonhuman primates.
To assess the association of integrated albunemia with aging and mortality across diverse primate species.
To explore the evolutionary conservation of integrated albunemia.

Main Methods:

Principal component analysis (PCA) of 13 physiological biomarkers across six primate species and humans.
Analysis of the primary axis of variation (PC1) for resemblance to integrated albunemia.
Evaluation of PC1 associations with age and mortality risk within and across species.

Main Results:

A primary axis of variation (PC1) resembling integrated albunemia was consistently identified across all species.
PC1 increased with age in most species, but its predictive power for mortality varied.
PC1 structure showed strong correlations across species, suggesting evolutionary conservation.
Phylogenetic effects on PC1 structure were inconclusive.

Conclusions:

Integrated albunemia appears to be an evolutionarily conserved process across primates.
This physiological process is generally associated with aging but not consistently with negative survival impacts.
The findings suggest broader implications for understanding the evolution of aging and physiological networks.