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Related Concept Videos

Aging01:26

Aging

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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...
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The Effect of Aging on Tissues01:19

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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...
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What is the Endocrine System?00:46

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The endocrine system sends hormones—chemical signals—through the bloodstream to target cells—the cells the hormones selectively affect. These signals are produced in endocrine cells, secreted into the extracellular fluid, and then diffuse into the blood. Eventually, they diffuse out of the blood and bind to target cells which have specialized receptors to recognize the hormones.
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Mitochondria01:37

Mitochondria

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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,...
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Psychoneuroimmunology: Diabetes and Cancer01:19

Psychoneuroimmunology: Diabetes and Cancer

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Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
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Pathophysiology of Heart Failure01:17

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Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
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Updated: May 24, 2025

Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans
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Systemic aging and aging-related diseases.

Qiao Li1,2, Nanyin Xiao1,2, Heng Zhang1,2

  • 1Experimental Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
|March 1, 2025
PubMed
Summary
This summary is machine-generated.

Aging is a systemic disease where organs communicate, accelerating decline and age-related diseases. Understanding this organ crosstalk offers new therapeutic targets for delaying aging.

Keywords:
agingaging‐related diseasesorgan crosstalksenescence

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Area of Science:

  • Gerontology and Systems Biology
  • Investigating the biological mechanisms of aging and inter-organ communication.

Background:

  • Aging is increasingly viewed as a systemic disease, not just single-organ dysfunction.
  • Systemic aging contributes significantly to neurodegenerative, cardiovascular, and malignant diseases.
  • Aged organs interact, accelerating the aging process through inter-organ crosstalk.

Purpose of the Study:

  • To delineate the mechanisms of organ crosstalk in systemic aging.
  • To identify therapeutic targets for delaying aging and combating age-related diseases.

Main Methods:

  • Review of current literature on systemic aging and organ communication.
  • Analysis of mediators of organ crosstalk, including metabolites, cytokines, and exosomes.
  • Examination of the role of metabolic disorders and senescence in systemic aging.

Main Results:

  • Organ crosstalk, mediated by lipids, glucose, short-chain fatty acids (SCFA), inflammatory cytokines, and exosomes, accelerates aging.
  • Metabolic disorders like hyperglycemia and hypercholesterolemia exacerbate aging hallmarks.
  • Systemic aging disrupts hemostasis, releasing inflammatory factors and senescence-associated secretory phenotype (SASP), promoting multi-organ aging.

Conclusions:

  • Organ crosstalk is a key driver of systemic aging and age-related diseases.
  • Targeting senescence and understanding inter-organ communication are critical strategies for healthspan extension.
  • This review provides insights into therapeutic targets for delaying aging.