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Endogenous Growth Theory
Endogenous growth theory, also known as the “growth-to-death” concept, is a theoretical framework that suggests that an organism’s growth rate accelerates with age. This idea was first introduced by biologist Ernst Mayr in 1950 and has since been extensively studied in various fields of biology, including ecology, evolution, and developmental biology.
According to Endogenous Growth Theory, the concept proposes that an organism’s growth rate accelerates as it ages due to several mechanisms:
- Cellular senescence: As an organism grows, its cells become less proliferative (more divisions occur) and more senescent (remnant cells). This leads to a decrease in cellular energy production and utilization, causing the cell to enter a state of dormancy or “hibernation.”
- Mitochondrial dysfunction: Mitochondria, the energy-producing structures within cells, become less efficient at generating energy due to their reduced number and reduced membrane potential. This leads to a decrease in cellular energy production, causing the cell to enter a state of “starvation” or “hypoxia.”
- Cellular senescence-associated secretory polyporespiration (CASP): Cells that are senescent undergo CASP, a process where they produce a large amount of cytoplasmic vesicles containing their contents and release them into the cytosol to recycle their contents in a process called “cytoplasmic autolysis.”
- Cellular senescence-associated secretory polypore respiration (CSPR): Cells that are senescent also undergo CSPR, which is a process where they produce a large amount of cytoplasmic vesicles containing their contents and release them into the cytosol to recycle their contents in a process called “cytoplasmic autolysis.”
- Cellular senescence-associated secretory polypore glycolysis (CSPLAG): Cells that are senescent also undergo CSPLAG, which is a process where they produce a large amount of cytoplasmic vesicles containing their contents and release them into the cytosol to recycle their contents in a process called “cytoplasmic autolysis.”
- Cellular senescence-associated secretory polypore glycolysis (CSPLAG): Cells that are senescent also undergo CSPLAG, which is a process where they produce a large amount of cytoplasmic vesicles containing their contents and release them into the cytosol to recycle their contents in a process called “cytoplasmic autolysis.”
- Cellular senescence-associated secretory polypore glycolysis (CSPLAG): Cells that are senescent also undergo CSPLAG, which is a process where they produce a large amount of cytoplasmic vesicles containing their contents and release them into the cytosol to recycle their contents in a process called “cytoplasmic autolysis.”
- Cellular senescence-associated secretory polypore glycolysis (CSPLAG): Cells that are senescent also undergo CSPLAG, which is a process where they produce a large amount of cytoplasmic vesicles containing their contents and release them into the cytosol to recycle their contents in a process called “cytoplasmic autolysis.”
- Cellular senescence-associated secretory polypore glycolysis (CSPLAG): Cells that are senescent also undergo CSPLAG, which is a process where they produce a large amount of cytoplasmic vesicles containing their contents and release them into the cytosol to recycle their contents in a process called “cytoplasmic autolysis.”
- **Endogenous growth theory has been extensively studied in various fields of biology, including ecology, evolution, developmental biology, and developmental biology. It is also used as a framework for understanding how aging affects an organism’s growth rate and how it can be slowed or accelerated through interventions such as caloric restriction, calorie supplementation, and exercise.
In summary, Endogenous Growth Theory suggests that an organism’s growth rate accelerates with age due to several mechanisms, including cellular senescence-associated secretory polypore respiration (CASP), cellular senescence-associated secretory polypore glycolysis (CSPLAG), and cellular senescence-associated secretory polypore autolysis (CSPLAG). These theories have been extensively studied in various fields of biology, providing a comprehensive understanding of how aging affects an organism’s growth rate.
See also
Pigouvian Tax Theory
Evolutionary Game Theory
Production Functions (Cobb-Douglas, CES)
Search and Matching Models
Dynamic Programming and Bellman Equation