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Related Concept Videos

Aging01:26

Aging

Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
Human Genetics01:28

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
Telomeres and Telomerase02:41

Telomeres and Telomerase

In eukaryotic DNA replication, a single-stranded DNA fragment remains at the end of a chromosome after the removal of the final primer. This section of DNA cannot be replicated in the same manner as the rest of the strand because there is no 3’ end to which the newly synthesized DNA can attach. This non-replicated fragment results in gradual loss of the chromosomal DNA during each cell duplication. Additionally, it can induce a DNA damage response by enzymes that recognize single-stranded DNA.
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...

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Related Experiment Video

Updated: Jun 23, 2026

A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae
10:39

A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae

Published on: September 17, 2020

[About genetic determinants of aging pathways].

A A Moskalev

    Advances in Gerontology = Uspekhi Gerontologii
    |May 13, 2009
    PubMed
    Summary

    Scientists identified a genetic component influencing longevity and aging. Gene mutations in model organisms significantly extend lifespan by enhancing stress resistance, offering insights into aging processes.

    Area of Science:

    • Genetics and Molecular Biology
    • Gerontology
    • Evolutionary Biology

    Context:

    • Aging is a complex biological process influenced by genetic and environmental factors.
    • Research has identified conserved genetic elements linked to longevity and aging.
    • Understanding these factors is crucial for addressing age-related decline.

    Purpose:

    • To explore the genetic underpinnings of longevity and aging.
    • To investigate environmental influences on the aging process.
    • To identify biomarkers and genetic determinants of exceptional human longevity.

    Summary:

    • Significant progress has been made in identifying longevity genes (gerontogenes) across various model organisms.
    • Mutations in these genes have been shown to dramatically increase maximum lifespan in yeast, nematodes, Drosophila, and mice.

    More Related Videos

    A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
    09:37

    A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging

    Published on: July 14, 2016

    Related Experiment Videos

    Last Updated: Jun 23, 2026

    A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae
    10:39

    A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae

    Published on: September 17, 2020

    A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
    09:37

    A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging

    Published on: July 14, 2016

  • These genes indirectly regulate aging by enhancing an organism's resistance to both exogenous and endogenous stresses.

    • Impact:

    • This research provides a foundation for developing novel therapeutic strategies to slow aging and extend healthspan.
    • Identifying aging biomarkers can lead to earlier detection and intervention for age-related diseases.
    • Understanding the genetic basis of longevity can inform approaches to promoting healthy aging in humans.