Related Experiment Video
Updated: May 23, 2026
06:18
Assessing Lysosomal Alkalinization in the Intestine of Live Caenorhabditis elegans
Published on: April 13, 2018
Autophagy, polyphenols and healthy ageing
Kathrin Pallauf1, Gerald Rimbach
1Institute of Human Nutrition and Food Science, Christian-Albrechts-University Kiel, Germany. pallauf@foodsci.uni-kiel.de
Ageing Research Reviews
|April 17, 2012
Summary
Autophagy, a cellular process, declines with age, increasing disease risk. Dietary polyphenols may counteract this decline, promoting health and longevity.
Area of Science:
- Cellular Biology
- Aging Research
- Nutritional Science
Background:
- Autophagy is a vital cellular degradation pathway for quality control.
- Its decline with age is linked to neurodegenerative diseases and cancer.
- Caloric restriction (CR) and polyphenols show potential in promoting healthy aging.
Purpose of the Study:
- To review the role of autophagy in aging and disease.
- To explore how dietary polyphenols regulate autophagy.
- To discuss the molecular mechanisms and implications for healthspan.
Main Methods:
- Literature review of studies on autophagy, aging, and polyphenols.
- Focus on molecular mechanisms of polyphenol-induced autophagy.
- Analysis of age-related decline in autophagy and disease pathogenesis.
Main Results:
- Autophagy impairment contributes to age-related diseases.
- Dietary polyphenols like resveratrol and curcumin can induce autophagy.
- Polyphenols may offer a dietary countermeasure to age-related autophagy decline.
Conclusions:
- Autophagy is crucial for cellular health and longevity.
- Dietary polyphenols represent a promising strategy to support autophagy.
- Understanding these mechanisms can inform interventions for healthy aging.
Related Concept Videos
01:27Autophagy
Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
01:37Mitochondria
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,...
01:36Delivery Pathways to the Lysosome
Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
01:26Aging
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...
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...
01:22Cellular Injury V: Apoptosis and Autophagy
Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...
02:59Cancer Prevention
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...