Cotransmission

Area of Science:

• Neuroscience
• Cellular signaling

Background:

• Cotransmission, the release of multiple neurotransmitters from a single nerve terminal, was proposed in 1976.
• The concept of 'chemical coding' for various nerve types, including sympathetic, parasympathetic, sensory-motor, enteric, and invertebrate nerves, was established.
• Cotransmission has recently been recognized in the central nervous system.

Purpose of the Study:

• To review the established role of cotransmission in nervous systems.
• To highlight the significance of adenosine triphosphate (ATP) as a conserved cotransmitter.
• To discuss recent advancements in understanding cotransmission mechanisms, plasticity, and differential control.

Main Methods:

• Literature review of cotransmission research.
• Analysis of the role of ATP as a cotransmitter.
• Synthesis of recent findings on cotransmission mechanisms and plasticity.

Main Results:

• ATP is a primitive signaling molecule retained as a cotransmitter in all nerve types across peripheral and central nervous systems.
• The relative importance of ATP as a cotransmitter differs significantly among species and in various pathological states.
• Recent research has focused on the mechanisms governing cotransmission, its plasticity, and the differential regulation of cotransmitter expression.

Conclusions:

• Cotransmission is a fundamental aspect of neural communication.
• ATP plays a crucial and conserved role as a cotransmitter.
• Ongoing research is elucidating the complex mechanisms and regulation of cotransmission.