kainic acid
Very Low / Specialist ScientificTechnical / Scientific
Definition
Meaning
A neurotoxic dicarboxylic acid derived from red algae, used in neuroscience to selectively damage or stimulate specific neurons, particularly in models of epilepsy and excitotoxicity.
In neuroscience research, a glutamate receptor agonist that binds preferentially to kainate receptors, leading to excitatory effects and neuronal damage. Used experimentally to model human neurological disorders like temporal lobe epilepsy and to study mechanisms of neurodegeneration.
Linguistics
Semantic Notes
Primarily used in neuroscience, pharmacology, and experimental neurology. Not used in general conversation or non-scientific writing. Refers both to the chemical compound and its experimental applications.
Dialectal Variation
British vs American Usage
Differences
No significant differences. Usage is identical in both scientific communities.
Connotations
Technical, precise, associated with experimental neurobiology.
Frequency
Used with equal rarity in both UK and US specialised literature.
Vocabulary
Collocations
Grammar
Valency Patterns
Kainic acid + verb (induces, causes, binds to)Preposition + kainic acid (with, by, via, following)Adjective + kainic acid (intracerebral, systemic, experimental)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None. This is a technical term with no idiomatic usage.”
Usage
Context Usage
Business
Not used.
Academic
Used in neuroscience, pharmacology, and medical research papers.
Everyday
Not used.
Technical
Used in experimental protocols, lab reports, and scientific discussions on excitotoxicity, epilepsy models, and neuronal death.
Examples
By Part of Speech
verb
British English
- The neurons were kainic acid-lesioned prior to behavioural testing.
American English
- Researchers kainate-treated the hippocampal slice to induce excitotoxicity.
adverb
British English
- The damage occurred kainic acid-dependently.
- Neurons fired kainate-sensitively.
American English
- The cells responded kainate-specifically in the assay.
adjective
British English
- The kainic acid injection produced focal seizures within hours.
American English
- The kainate receptor subtype mediates the fast excitatory synaptic response.
Examples
By CEFR Level
- (Not applicable at this level.)
- Scientists sometimes use chemicals to study the brain. Kainic acid is one such chemical.
- In experimental models, kainic acid is used to induce seizures and study epilepsy mechanisms.
- The administration of kainic acid selectively targets kainate receptors, providing a model for temporal lobe epilepsy characterised by hippocampal sclerosis.
Learning
Memory Aids
Mnemonic
Think of a KEY (kay-) turning in a lock (receptor) to UNLEASH (excite) neural activity, causing an acidic effect on the brain.
Conceptual Metaphor
A chemical key that overstimulates the brain's communication system.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'кислота' used colloquially for LSD. This is a specific scientific compound.
- Avoid translating as 'киноварная кислота' (cinnabar/vermilion acid), which is incorrect. Use 'каиновая кислота' as the established term.
Common Mistakes
- Misspelling as 'kanic acid' or 'kainik acid'.
- Using it as a general term for any neurotoxin.
- Incorrect pronunciation with /kæ/ instead of /keɪ/.
Practice
Quiz
What is the primary experimental use of kainic acid in neuroscience?
FAQ
Frequently Asked Questions
Yes, it is a natural compound originally isolated from the red alga Digenea simplex.
No, it is not a therapeutic drug. It is used exclusively in laboratory research as a tool to study brain function and disease.
Both are structurally related neurotoxins from algae. Domoic acid is infamous for causing amnesic shellfish poisoning in humans, while kainic acid is primarily a laboratory research tool.
The name derives from the Japanese word 'kaininso' (the source alga). Correct pronunciation (/keɪ.nɪk/) maintains the link to its origin and distinguishes it from other words.