The Endocannabinoid System of Animals

Area of Science:

• Endocrinology
• Neuroscience
• Immunology

Background:

• The endocannabinoid system (ECS) is a widespread signaling system in mammals, crucial for maintaining homeostatic balance across nervous, immune, and other organ systems.
• The ECS comprises endogenous ligands (endocannabinoids like anandamide and 2-AG), G-protein coupled receptors (GPCRs), and degrading/recycling enzymes.
• While prevalent in many species, insects appear to lack this system.

Purpose of the Study:

• To review the components and distribution of the endocannabinoid system.
• To highlight the interaction of plant-derived phytocannabinoids with the ECS.
• To note the ongoing research into cannabinoid receptor distribution in animals, particularly canines.

Main Methods:

• Literature review of existing research on the endocannabinoid system.
• Analysis of the molecular components of the ECS, including ligands and receptors.
• Examination of the interaction between phytocannabinoids and the ECS.

Main Results:

• The ECS is composed of endogenous ligands, GPCRs, and enzymes, essential for physiological regulation.
• Phytocannabinoids from plants like Cannabis sativa L. can act as ligands, interacting with the ECS.
• Research is actively determining the distribution of cannabinoid receptors across various animal species.

Conclusions:

• The endocannabinoid system is a fundamental biological system with conserved components across species.
• Phytocannabinoids represent an external factor that can modulate the ECS.
• Further research on cannabinoid receptor distribution is vital for understanding interspecies interactions.