Animal Aging Studies
Animal Aging Studies - Related Videos
26:43
Computer-Generated Animal Model Stimuli
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Cited by 8 •
2007
Computer-generated stimuli using the Jacky dragon as a model.
06:08
Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging
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Cited by 11 •
2014
Pulse wave velocity (PWV) measurement assesses arterial stiffness by a tonometry-based system that measures the speed with which arterial pressure wave travels along the arterial tree, typically approximating the time that it takes this wave to travel from the descending aorta (using the carotid artery as a surrogate) to the femoral artery. Carotid-femoral PWV increases two- to threefold across the adult lifespan.
09:30
Behavioral Assessment of the Aging Mouse Vestibular System
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Cited by 48 •
2014
Motor control and balance performance are known to deteriorate with age. This paper presents a number of standard noninvasive behavioral tests with the addition of a simple rotary stimulus to challenge the vestibular system and show changes in balance performance in a murine model of aging.
08:46
Studying Age-dependent Genomic Instability using the S. cerevisiae Chronological Lifespan Model
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Cited by 13 •
2011
Here we describe a set of DNA mutation assays that can be combined with the yeast chronological life span model to study the genes/pathways that regulate or contribute to genomic DNA instability during aging.
14:57
Preparation of Acute Hippocampal Slices from Rats and Transgenic Mice for the Study of Synaptic Alterations during Aging and Amyloid Pathology
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Cited by 62 •
2011
This article outlines procedures for preparing hippocampal slices from rats and transgenic mice for the study of synaptic alterations associated with brain aging and age-related neurodegenerative diseases, such as Alzheimer’s disease.
FAQs
Cellular senescence, accumulated molecular damage, altered metabolism, and reduced tissue repair represent interacting processes that can shift tissues from maintenance toward decline. Studying these changes across animal ages helps researchers connect cellular and molecular events with reduced physiological function. This mechanistic comparison can identify which age-related changes are associated with survival, healthspan, or the development of disease.
Animal aging studies examine aging as the result of interacting genetic, physiological, and environmental influences rather than a single universal cause. Researchers compare organisms or populations with different characteristics and relate those differences to survival and function over time. This approach helps reveal why some animals show different rates of decline and provides context for interpreting age-related mechanisms.
Lifespan describes the period associated with survival, whereas healthspan focuses on the duration of maintained health and function. Examining both outcomes prevents researchers from treating longer survival as the only measure of successful aging. Animal studies therefore assess how biological changes relate not only to when organisms die, but also to when age-related decline and impaired function emerge.
A basic age-comparison workflow examines animals at different life stages and evaluates cellular, molecular, metabolic, tissue-repair, physiological, or functional changes. Researchers then relate these measurements to survival and overall function. Comparing age groups in this way helps separate patterns that track with aging from observations that may reflect differences among organisms, environments, or biological characteristics.
Model organisms provide systems in which researchers can examine aging-related mechanisms, while comparative biology broadens the analysis across animals with different biological characteristics. Together, these approaches help connect observations at genetic, physiological, and environmental levels with variation in longevity. They also support more general conclusions about how aging and lifespan may differ across organisms.
Findings can support investigations of age-related diseases, potential interventions intended to promote healthy aging, and questions in the evolutionary biology of longevity. Researchers use observed links among biological mechanisms, survival, and function to guide these areas. The value of the studies lies in connecting age-related changes in animals with broader explanations of disease, intervention targets, and variation in longevity.