Glucogénesis, glucogenólisis y gluconeogénesis [DIFERENCIAS]

What is the Difference Between Glycogenesis, Glycogenolysis, and Gluconeogenesis?

Understanding Glycogenesis

• Glycogenesis refers to the process of building glycogen from glucose molecules. It primarily occurs after food intake when the body has excess glucose.

• The liver and skeletal muscle are the main tissues involved in glycogenesis, as they specialize in storing glycogen for energy.

Exploring Glycogenolysis

• Glycogenolysis is the breakdown of glycogen into glucose. This process is essential for releasing glucose when needed by the body.

• Key contexts for glycogenolysis include physiological fasting (e.g., during sleep), induced fasting (when one chooses not to eat), and intense exercise when muscles require immediate energy.

Introduction to Gluconeogenesis

• Gluconeogenesis means "new formation of glucose" from non-carbohydrate sources. It involves synthesizing glucose from components like glycerol, pyruvate, lactate, and certain amino acids such as alanine.

• The liver and kidneys are primarily responsible for gluconeogenesis, especially when glycogen stores begin to deplete during fasting states.

Interplay Between Processes

• Initially, during fasting or low-energy states, the body relies on glycogenolysis to obtain glucose. As glycogen reserves diminish, it shifts towards gluconeogenesis to maintain necessary blood glucose levels.