l-dopa (ĕl-dō`pə), drug used to alleviate some of the symptoms of Parkinson's disease Parkinson's disease or Parkinsonism, degenerative brain disorder first described by the English surgeon James Parkinson in 1817. When there is no known cause, the disease usually appears after age 40 and is referred to as Parkinson's disease.
..... Click the link for more information. , particularly trembling, rigidity, and slow movements; the drug is also called levodopa. Parkinson's disease results when the concentration of dopamine in the brain is depleted (see catecholamine catecholamine , any of several compounds occurring naturally in the body that serve as hormones or as neutrotransmitters in the sympathetic nervous system. The catecholamines include such compounds as epinephrine, or adrenaline, norepinephrine, and dopamine.
..... Click the link for more information. ). Medical administration of dopamine itself is ineffective since that chemical apparently does not enter the brain from the blood. A metabolic precursor of dopamine, l-dopa does enter the brain via the bloodstream and is probably converted into dopamine there. Because there are many brain disorders with similar symptoms, many patients do not show any improvement when treated with the drug. Furthermore, virtually all patients on l-dopa experience side effects including nausea, loss of appetite, cardiac irregularities, and psychological changes.

levodopa

or L-dopa

Organic compound (L-3,4-dihydroxyphenylalanine) from which the body makes dopamine, a neurotransmitter deficient in persons with parkinsonism. When given orally in large daily doses, levodopa can lessen the effects of the disease. However, it becomes less effective over time and causes abnormal involuntary movements (dyskinesia).

L-dopa [¦el ′dō·pə]

(pharmacology)

levodopa

Mentioned in	?		References in periodicals archive	?		Encyclopedia browser	?		Full browser	?
No references found	The research team, which included Dr Tamara Shiner and Professor Ray Dolan, examined estimated pleasure of future events before and after the administration of a drug called L-DOPA which is known to enhance dopamine function in the brain and is commonly used to treat patients with Parkinson's disease. Role of Brain Chemical Dopamine in Human Life Choice Revealed by FARS News Agency They were then given L-DOPA or a placebo and asked to imagine holidaying in those destinations. Brain chemical helps people make decisions by Asian News International Researchers are investigating if the drug L-dopa, alongside physiotherapy and occupational therapy, can boost stroke patients' mobility and increase their chances of walking again. New hope for stroke patients by Birmingham Mail (England)	L'Allegro L'Amour, Louis L'Anse aux Meadows L'Aquila L'Assommoir L'Enfant, Pierre Charles L'Enfant, Pierre-Charles L'Engle, Madeleine L'Esperance, Elise l'Hôpital's cubic l'Hôpital's rule L'Hôpital, Michel de l'Huilier's equation L'Olonnois, François L'Ouverture, Toussaint L-1 test L-2 test L-3 test L-4 test L-5 test L-band L-beam L-column L-commerce L-cystathionine L-dopa L-fucopyranose L-fucose L-galactomethylose L-head L-head engine L-iron L-plan L-plate l-process L-rhodeose L-shore L-Soft L/D ratio L/M Lža L0 L0pht L1 cache l10n L2 cache L2CAP L2F L2TP L3 cache L3_PDU	L-carnosine L-carnosine L-chain L-chain L-chain L-CHEAPO L-CL L-column L-commerce L-CPMET L-CSA L-Curve L-cystathionine L-cysteine L-cysteine L-cysteine L-cysteine hydrochloride L-cysteine hydrochloride L-cysteine hydrochloride L-cysteine hydrochloride monohydrate L-cysteine hydrochloride monohydrate L-cysteine hydrochloride monohydrate L-Cysteine Methyl Ester L-cystine L-cystine L-cystine L-D L-D converter L-D-TD L-deprenyl L-dopa L-driver L-drivers L-electron capture L-electron capture L-electron capture L-enantiomer L-enantiomer L-enantiomer L-FABP L-fields L-Fold Spin Projected Unrestricted Moeller-Plesset L-form L-form bacteria L-form bacteria L-form bacteria L-fructose L-fructose L-fructose L-fucopyranose L-fucose L-galactomethylose L-GLRT l-gluonolactone oxidase L-glutamate L-glutamate L-glutamate l-glutamate dehydrogenase L-Glutamate Diethyl Ester L-Glutamate/L-Aspartate Transporter L-Glutamic Acid

Mentioned in

References in periodicals archive

Encyclopedia browser

Full browser

No references found

The research team, which included Dr Tamara Shiner and Professor Ray Dolan, examined estimated pleasure of future events before and after the administration of a drug called L-DOPA which is known to enhance dopamine function in the brain and is commonly used to treat patients with Parkinson's disease.

Role of Brain Chemical Dopamine in Human Life Choice Revealed by FARS News Agency

They were then given L-DOPA or a placebo and asked to imagine holidaying in those destinations.

Brain chemical helps people make decisions by Asian News International

Researchers are investigating if the drug L-dopa, alongside physiotherapy and occupational therapy, can boost stroke patients' mobility and increase their chances of walking again.

New hope for stroke patients by Birmingham Mail (England)

L-carnosine
L-carnosine
L-chain
L-chain
L-chain
L-CHEAPO
L-CL
L-column
L-commerce
L-CPMET
L-CSA
L-Curve
L-cystathionine
L-cysteine
L-cysteine
L-cysteine
L-cysteine hydrochloride
L-cysteine hydrochloride
L-cysteine hydrochloride
L-cysteine hydrochloride monohydrate
L-cysteine hydrochloride monohydrate
L-cysteine hydrochloride monohydrate
L-Cysteine Methyl Ester
L-cystine
L-cystine
L-cystine
L-D
L-D converter
L-D-TD
L-deprenyl

L-dopa

L-driver
L-drivers
L-electron capture
L-electron capture
L-electron capture
L-enantiomer
L-enantiomer
L-enantiomer
L-FABP
L-fields
L-Fold Spin Projected Unrestricted Moeller-Plesset
L-form
L-form bacteria
L-form bacteria
L-form bacteria
L-fructose
L-fructose
L-fructose
L-fucopyranose
L-fucose
L-galactomethylose
L-GLRT
l-gluonolactone oxidase
L-glutamate
L-glutamate
L-glutamate
l-glutamate dehydrogenase
L-Glutamate Diethyl Ester
L-Glutamate/L-Aspartate Transporter
L-Glutamic Acid

L-dopa playV2('en/US/dk/dkd7jndsshsfdsh7');playV2('en/UK/dk/dkd7jndsshsfdsh7')

levodopa

L-dopa