bufadienolide: meaning, definition, pronunciation and examples
Very RareTechnical/Scientific
Quick answer
What does “bufadienolide” mean?
A steroid lactone found primarily in plants and toads, with a characteristic six-membered lactone ring at C-17, possessing cardiotonic properties.
Audio
Pronunciation
Definition
Meaning and Definition
A steroid lactone found primarily in plants and toads, with a characteristic six-membered lactone ring at C-17, possessing cardiotonic properties.
A class of cardiac glycosides, structurally and functionally similar to cardenolides but differing in the structure of the lactone ring. They act on the sodium-potassium ATPase pump, affecting heart muscle contraction. Many are potent toxins with therapeutic potential.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is consistent. Pronunciation of the final syllable /laɪd/ may be slightly more diphthongal in American English.
Connotations
Neutral scientific term in both dialects. Associated with toxicity (e.g., toad venom, poisonous plants) and medical research.
Frequency
Extremely low frequency in general language; identical, specialist-only frequency in scientific contexts.
Grammar
How to Use “bufadienolide” in a Sentence
The [plant extract] contains [several] bufadienolides.[Researchers] isolated [a novel] bufadienolide [from the species].[The] bufadienolide [inhibits] the ATPase [pump].Vocabulary
Collocations
Examples
Examples of “bufadienolide” in a Sentence
adjective
British English
- The bufadienolide extract showed potent activity.
- This is a classic bufadienolide structure.
American English
- The bufadienolide compounds were toxic.
- We observed a bufadienolide-mediated response.
Usage
Meaning in Context
Business
Not used.
Academic
Used in research papers in biochemistry, pharmacology, botany, and toxicology. E.g., 'The bufadienolide profile of *Bowiea volubilis* was characterised using LC-MS.'
Everyday
Never used.
Technical
Core term in relevant technical fields. Used in compound identification, pharmacological assays, and toxicological reports.
Vocabulary
Synonyms of “bufadienolide”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “bufadienolide”
- Misspelling: 'bufadienolid', 'bufodienolide', 'bufadienoide'.
- Mispronunciation: stressing the wrong syllable (e.g., /ˈbjuːfə/ instead of /ˌbjuːfədaɪˈɛn/).
- Confusing it with the similar 'cardenolide', which has a five-membered lactone ring.
FAQ
Frequently Asked Questions
They are found in certain plants (e.g., members of the Crassulaceae, Hyacinthaceae families) and in the venom/secretions of toads (genus Bufo).
Both are cardiac glycosides, but digitalis compounds (like digoxin) are cardenolides with a five-membered lactone ring, while bufadienolides have a six-membered lactone ring.
While some have been investigated for potential anti-cancer or cardiotonic effects, their high toxicity has generally limited clinical use compared to cardenolides like digoxin.
No. It is an extremely rare, highly technical term used only in specific scientific fields.
A steroid lactone found primarily in plants and toads, with a characteristic six-membered lactone ring at C-17, possessing cardiotonic properties.
Bufadienolide is usually technical/scientific in register.
Bufadienolide: in British English it is pronounced /ˌbjuːfədaɪˈɛnəlaɪd/, and in American English it is pronounced /ˌbjuːfəˌdaɪəˈnoʊlaɪd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: BUFfalo + ADIEnolide. A buffalo-sized toad (BUFo) saying ADIEU (goodbye) because its heart is affected by the '-olide' (lactone) toxin.
Conceptual Metaphor
A KEY that fits a specific LOCK (the Na+/K+ ATPase pump), altering the machine's function.
Practice
Quiz
Bufadienolides are primarily classified as what type of compound?