Definition

Noun: A neurotransmitter or neuropeptide produced naturally in the brain, spinal cord, and other parts of the body. It is a type of endorphin that binds to opioid receptors and has pain-relieving and mood-modulating effects similar to opiate drugs.

Usage and Examples

• enkephalin functions as a chemical messenger in the nervous system.
  • Scientists are studying how enkephalin levels affect the perception of pain.
  • The release of enkephalin can create a sense of well-being.
• It is often discussed in scientific contexts related to neurology, pharmacology, and physiology.
  • The research paper focused on the role of enkephalin in the body's natural painkilling pathways.

Advanced Usage and Context

• enkephalin is frequently mentioned alongside other endogenous opioids like endorphins and dynorphins, though it is a specific subtype.
• In medical and biochemical literature, it is common to see references to enkephalin receptors or enkephalinergic pathways, describing the systems in the body that this peptide activates.

Variants and Related Words

• Enkephalinergic (adjective): Relating to or denoting neurons that use enkephalin as a neurotransmitter.
  • The study mapped the enkephalinergic circuits in the brainstem.

Synonyms and Related Terms

• Endogenous opioid: A broader category of naturally produced, opiate-like substances in the body, which includes enkephalins.
• Neuropeptide: A class of small protein-like molecules used by neurons to communicate, which is the category enkephalin belongs to.

Notes on Meaning

The word enkephalin has a single, specific scientific meaning. It does not have idiomatic expressions or phrasal verbs associated with it in common usage. Its use is almost exclusively confined to technical, academic, and medical contexts.

Noun

1. an endorphin having opiate qualities that occurs in the brain and spinal cord and elsewhere