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Endocannabinoid System

Endocannabinoid System

What is the Endocannabinoid System?

The Endocannabinoid System (ECS) is a system of physiology that is present inside the human body. It aids in maintaining an optimal chemical and internal environmental balance in the body, a process known as homeostasis. This article discusses the importance of the Endocannabinoid System and the function it has in the body.

The ECS contains cell receptors, including Cannabinoid Receptor 1 (CB1) and Cannabinoid Receptor 2 (CB2), that are responsive to certain agonists. These receptors are found throughout the body, CB1 receptors are mostly prevalent in the Central Nervous System. However, CB2 receptors are more abundant in immune cells and the peripheral nervous system. Cell receptors work like locks and keys; the surface of a cell contains a lock that is opened with a key, known as a cell agonist. When interaction between an agonist and a cell occurs, the body receives chemical messages to start certain processes, such as temperature regulation. The etymology of Endocannabinoids is derived from the cannabis plant itself, with Endo meaning ‘within’ and cannabinoid meaning the chemical that binds to cell receptors in the body. The two main cannabinoid molecules, Anandamide and 2-AG are cannabinoid receptors that have evolved throughout the natural world; they have existed prior to the discovery of the cannabis plant, with an evolution period of approximately 600 million years. Present in most, if not all mammals, cannabinoid receptors act as functioning sensor devices that respond to cell stimulation.


The Discovery of the ECS

Following the discovery of THC (the psychoactive chemical present in cannabis) by Israeli scientist Raphael Mechoulam and his colleague Y. Gaoni in 1964, scientists began to research more about how the body reacted to the cannabis plant. Despite halted progress to this research, a government-funded study at the St. Louis University School of Medicine found that receptors in the brain responded to compounds found in cannabis resin. Allyn Howlett and William Devane identified cannabinoid receptors to be most prevalent in the brain, sparking new research into how cannabinoids interacted with cells. This eventually led to a process of cloning cannabis receptors to further understand the ‘lock and key’ process that occurs with agonist and antagonist cells.

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