l-dopa
Học thuậtThân thiện
Definition
Noun 1. A medication for Parkinson's disease: L-dopa is the levorotatory (left-rotating) form of the amino acid dopa. It is a precursor to the neurotransmitter dopamine and is used as a drug to treat the symptoms of Parkinson's disease by increasing dopamine levels in the brain.
Usage Examples
- Noun:
- The doctor prescribed l-dopa to manage the patient's tremors and stiffness.
- L-dopa therapy is a cornerstone of treatment for Parkinson's disease.
- A common side effect of long-term l-dopa use is dyskinesia (involuntary movements).
Advanced Usage
- "L-dopa/carbidopa": This refers to a common combination medication where carbidopa is added to prevent the breakdown of l-dopa in the body before it reaches the brain, allowing for a lower and more effective dose.
- The patient was switched from plain l-dopa to a l-dopa/carbidopa combination to improve efficacy.
Variants and Related Words
- Levodopa: This is the full, formal chemical name for l-dopa. The terms are used interchangeably in medical contexts.
- Dopamine: The neurotransmitter in the brain that l-dopa helps to produce.
- Carbidopa: A drug often combined with l-dopa (see Advanced Usage).
Synonyms
- Levodopa (formal synonym)
- L-3,4-dihydroxyphenylalanine (full chemical name)
Notes on Different Meanings
- L-dopa has a very specific meaning in medicine and biochemistry. It is not used in general language outside of references to Parkinson's disease treatment or neurochemistry.
Noun
- the levorotatory form of dopa (trade names Bendopa and Brocadopa and Larodopa); as a drug it is used to treat Parkinson's disease