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1 ion of cotemporaneous bursts were reduced by levodopa.
2 ts of citalopram were stronger than those of levodopa.
3 sodes that are not predictably responsive to levodopa.
4 ed with PD patients with stable responses to levodopa.
5 onia and a dramatic long-lasting response to levodopa.
6 son's disease who have motor fluctuations on levodopa.
7 o alleviated dyskinetic behaviors induced by levodopa.
8 ed-release, capsule formulation of carbidopa-levodopa.
9 1) compared with immediate-release carbidopa-levodopa.
10 e abnormalities with STN stimulation but not levodopa.
11 patients were on or off the dopamine prodrug levodopa.
12 ration compared with that achieved with oral levodopa.
13 ation and that address symptoms resistant to levodopa.
14 ly, differences in the long-term response to levodopa.
15 etrahydropyridine (MPTP) and dyskinetic with levodopa.
16 awal of levodopa and after administration of levodopa.
18 ts with early Parkinson's disease to receive levodopa (100 mg three times per day) in combination wit
19 el imaging techniques (6-[fluoride-18]fluoro-levodopa [(18)F-DOPA] PET-CT and glucagon-like peptide 1
20 e conversion with extended-release carbidopa-levodopa, 23 (5%) of 450 patients withdrew because of ad
21 ed to each participant a dopamine precursor (levodopa), a dopamine antagonist (risperidone), and a pl
23 erial tyrosine decarboxylases at the site of levodopa absorption, proximal small intestine, had a sig
24 ydroxydopamine lesioned model of PD, chronic levodopa administration induced characteristic dyskinesi
26 may combine to explain the addictive use of levodopa after loss of midbrain dopamine neurons in some
28 doses of co-careldopa were 62.5 mg (50 mg of levodopa and 12.5 mg of carbidopa) and the remaining dos
30 2% (SD 14.91) for extended-release carbidopa-levodopa and 29.79% (15.81) for immediate-release carbid
34 ptomatic treatment by the dopamine precursor levodopa and dopamine agonists can improve motor symptom
38 siology via aberrant processing of exogenous levodopa and release of dopamine as false neurotransmitt
40 combined accumulation of dopamine precursor levodopa and serotonin precursor 5-hydroxytryptophan.
41 tinal pigment epithelial (RPE) cells produce levodopa and their transplantation into the striatum mig
42 years; 11 females) received a single dose of levodopa and then performed a task in which they had to
43 increasing brain dopamine levels (150 mg of levodopa) and blocking dopamine receptors (1.5 mg of hal
44 al lesions were then challenged with l-dopa (levodopa) and various dopamine receptor agonists, and re
45 monotherapy, (2) acute coadministration with levodopa, and (3) chronic coadministration for 1 month.
46 tients treated with dopamine agonists and/or levodopa, and age- and education- matched neurologically
47 able morning off periods, were responsive to levodopa, and were on stable doses of anti-parkinsonian
49 eloped, current evidence supports the use of levodopa as initial symptomatic treatment in most patien
50 tment of Parkinson's disease, as adjuncts in levodopa based therapy, or for the treatment of schizoph
51 Grafted monkeys were also challenged with levodopa but did not show any greater responses to these
52 te), and had symptoms that responded to oral levodopa but were insufficiently controlled by optimised
54 patients allocated to immediate-release oral levodopa-carbidopa (difference -1.91 h [95% CI -3.05 to
55 as deep brain stimulation and treatment with levodopa-carbidopa enteral suspension can help individua
56 rom advanced treatments such as therapy with levodopa-carbidopa enteral suspension or deep brain stim
57 ents allocated to the immediate-release oral levodopa-carbidopa group (seven [21%] serious), mainly a
58 We aimed to assess efficacy and safety of levodopa-carbidopa intestinal gel delivered continuously
59 h (SE 0.65) for 35 patients allocated to the levodopa-carbidopa intestinal gel group compared with a
60 ses 35 (95%) of 37 patients allocated to the levodopa-carbidopa intestinal gel group had adverse even
61 dopa plus placebo intestinal gel infusion or levodopa-carbidopa intestinal gel infusion plus oral pla
62 :1) to treatment with immediate-release oral levodopa-carbidopa plus placebo intestinal gel infusion
65 rary to the model predictions, we found that levodopa caused an increase in the force exerted only in
66 of parkinsonism that is poorly responsive to levodopa, cerebellar ataxia and corticospinal dysfunctio
69 Parkinson's disease chronically treated with levodopa commonly have delayed or unpredictable onset of
70 y and efficacy of opicapone as an adjunct to levodopa compared with placebo or entacapone in patients
71 and motivation: while the dopamine precursor levodopa, compared with placebo, increased the hedonic e
72 Furthermore, intraperitoneal injection of levodopa could significantly improve the motor dysfuncti
74 ysicians to individually tailor the existing levodopa daily regimen, by potentially reducing the tota
75 t demonstration of the benefit of continuous levodopa delivery in a double-blind controlled study.
77 mprovement in motor ratings during infusion, levodopa did not alter learning performance or network a
79 e to dopaminergic medications (eg, carbidopa-levodopa, dopamine agonists), and slower disease progres
80 tle in the past decade and include carbidopa/levodopa, dopamine agonists, and monoamine oxidase type
81 ks of open-label immediate-release carbidopa-levodopa dose adjustment followed by 6 weeks of open-lab
83 men, by potentially reducing the total daily levodopa dose, increasing the dosing interval, and ultim
84 , the expression of which is correlated with levodopa dose, many of which are under the control of ac
87 fluctuations may be managed by modifying the levodopa dosing regimen or by adding several other medic
89 (UPDRS item 4) (1.94 [1.33-2.82]), a higher levodopa equivalent daily dose (1.63 [1.09-2.43]), and m
90 NC), age at plasma collection, sex, and the levodopa equivalent daily dose (LEDD), deriving first-pa
92 on Scale (GDS-15), RBD medication use, total levodopa equivalent daily dose, and dopamine agonist (DA
95 we evaluated the longitudinal change in the levodopa equivalent dose per month using a linear mixed
96 ied Parkinson's Disease Rating Scale scores, levodopa equivalent dose, and global Pittsburgh Sleep Qu
97 he independent variable, with adjustment for levodopa equivalent dose, sex, age, disease duration, MD
100 n, UPDRS III scores off and on medication or levodopa equivalent doses between the two techniques.
101 isease, rates of pre-existing depression and Levodopa equivalent doses of anti-Parkinson's medication
103 agonist buspirone prior to levodopa reduced levodopa-evoked striatal synaptic dopamine increases and
104 dyskinesias received 200mg fast-acting oral levodopa following prolonged withdrawal from their norma
105 nd watch strategy, and establish whether new levodopa formulations will delay onset of dyskinesia.
106 g-term treatment with the dopamine precursor levodopa gradually induces involuntary "dyskinesia" move
107 mization by an average of 5.2 letters in the levodopa group and by 3.8 letters in the placebo group (
111 For several decades, the dopamine precursor levodopa has been the primary therapy for Parkinson's di
113 ase (PD), and the subsequent introduction of levodopa have revolutionalized the field of PD therapeut
116 t group) or placebo for 40 weeks followed by levodopa in combination with carbidopa for 40 weeks (del
117 over the course of 80 weeks, treatment with levodopa in combination with carbidopa had no disease-mo
118 mitigated by the outcomes of the PD MED and Levodopa in Early Parkinson's Disease (LEAP) studies.
119 rmulation versus immediate-release carbidopa-levodopa in patients with Parkinson's disease and motor
120 and efficacy of tozadenant as an adjunct to levodopa in patients with Parkinson's disease who have m
121 ntrolled trial of opicapone as an adjunct to levodopa in patients with Parkinson's disease with end-o
122 upport safinamide as an effective adjunct to levodopa in patients with PD and motor fluctuations to i
125 , nor interactions between movement type and levodopa in the STN, nor in the coherence between STN an
126 iological interaction analysis revealed that levodopa increased effective connectivity between the po
127 low level of dopamine sufficient to cause a levodopa-independent continuous form of diphasic dyskine
129 anxiety, obsessive-compulsive disorders, and levodopa induced dyskinesia in Parkinson's disease.
130 sioned 6-hydroxydopamine rats that developed levodopa-induced abnormal involuntary movements (AIMs) a
132 logy, few neuroimaging studies have examined levodopa-induced differences in neural activation betwee
138 duced in striatal neurons of rats exhibiting levodopa-induced dyskinesia [LID; a side-effect to dopam
140 sion of the prevailing hypothesis that links levodopa-induced dyskinesia to an altered sensitivity to
144 ale scores in those Parkinson's disease with levodopa-induced dyskinesias (n = 12), correlated with l
147 eural mechanisms underlying the emergence of levodopa-induced dyskinesias in vivo are still poorly un
149 n revealed that patients who later developed levodopa-induced dyskinesias, but not patients without d
153 namic causal modelling was applied to assess levodopa-induced modulation of effective connectivity be
154 ividual dyskinesia severity was predicted by levodopa-induced modulation of striato-cortical feedback
155 otor disability, activities of daily living, levodopa-induced motor complications (as assessed with t
156 .001), activities of daily living (P<0.001), levodopa-induced motor complications (P<0.001), and time
157 an earlier age at onset, and less asymmetry, levodopa-induced motor complications, dysautonomia, and
161 e studied the subjects during an intravenous levodopa infusion titrated to achieve a motor response e
163 on-making tasks, following either placebo or levodopa intake in a double blind within-subject protoco
169 ew extended release formulation of carbidopa/levodopa (IPX066), safinamide which inhibits MAO-B, dopa
170 role allows levodopa to be delayed, but once levodopa is added to the drug regimen the usual course o
175 inson's disease using the dopamine precursor levodopa is unfortunately limited by gradual development
177 out causing dyskinesia and, as an adjunct to levodopa, it improves motor function without worsening d
179 ced dyskinesia (LID) develops after repeated levodopa (l-DOPA) exposure in Parkinson disease patients
180 l sensitization that develops after repeated levodopa (l-DOPA) exposure in Parkinson disease patients
185 t of a single dose of the dopamine precursor levodopa (l-DOPA) on mesostriatal fractional amplitude o
187 Restoration of dopamine transmission by levodopa (L-DOPA) relieves motor symptoms of PD but ofte
190 certain catecholamines viz., dopamine (DA), levodopa (l-Dopa), epinephrine (EP) and norepinephrine (
191 tabolizes the Parkinson's disease medication Levodopa (l-dopa), potentially reducing drug availabilit
192 bacteria from the gut microbiota metabolize Levodopa (L-dopa), reducing bioavailability of the drug
195 armacological dopamine (DA) replacement with Levodopa [L-dihydroxyphenylalanine (L-DOPA)] is the gold
201 double-blind with extended-release carbidopa-levodopa (mean 3.6 doses per day [SD 0.7]) had greater r
203 .79% (15.81) for immediate-release carbidopa-levodopa (mean difference -5.97, 95% CI -9.05 to -2.89;
204 hioneine, and significantly higher levels of levodopa metabolites and biliverdin than those of normal
207 tients allocated immediate-release carbidopa-levodopa), nausea (six [3%] vs three [2%]), and falls (s
210 ibitor citalopram and the dopamine precursor levodopa on decisions to inflict pain on oneself and oth
211 finger movements and of the dopamine prodrug levodopa on induced power in the contralateral primary m
213 We gave 31 healthy older adults 150 mg of levodopa or placebo (double-blinded, randomised) 1 hour
216 and efficacy of CVT-301, a self-administered levodopa oral inhalation powder, for the treatment of pa
218 re from off to on state after use of an oral levodopa plus a dopa-decarboxylase inhibitor combination
220 tment with either low- or high-dose Sinemet (levodopa plus carbidopa) for 2 weeks and compared their
223 ves pharmacologic approaches (typically with levodopa preparations prescribed with or without other m
224 striato-cortical connectivity in response to levodopa produces an aberrant reinforcement signal produ
226 k activity by striatal implantation of human levodopa-producing retinal pigment epithelial (hRPE) cel
227 by early disease onset, moderate response to levodopa, rapid progression leading to loss of autonomy
230 receptor type 1A agonist buspirone prior to levodopa reduced levodopa-evoked striatal synaptic dopam
231 lly, administration of the dopamine prodrug, levodopa, reduced the frequency and duration of periods
232 talopram enhancing behavioral inhibition and levodopa reducing slowing related to being responsible f
233 s reflected in the long-duration response to levodopa, reinterpreted here as the correction of aberra
235 c therapy, and strategies to delay and treat levodopa-related motor complications and nonmotor Parkin
239 D who may have PD on the basis of a positive levodopa response, clinical progression, imaging and/or
241 cant dissociation of vasomotor and metabolic levodopa responses was seen in the striatum/globus palli
243 nsideration of SRD not only in patients with levodopa-responsive motor disorders, but also in patient
244 s had mild developmental delay and developed levodopa-responsive parkinsonism between the ages of 25
246 rogression, early postural instability, poor levodopa responsiveness and symmetric involvement) were
248 ence of benefits for galantamine, modafinil, levodopa, rotigotine, clozapine, duloxetine, clonazepam,
250 ation of levodopa, which led to misconceived levodopa-sparing strategies, have been largely mitigated
252 ings reported in patients with PD undergoing levodopa therapy and other symptomatic interventions.
254 d-of-dose motor fluctuations associated with levodopa therapy in patients with Parkinson disease (PD)
255 picapone compared with placebo as adjunct to levodopa therapy in patients with PD experiencing end-of
256 rs4680 polymorphism modulated the effect of levodopa therapy on planning-related activations in the
257 disadvantages of delaying the initiation of levodopa therapy, the role of dopamine agonists, particu
259 hway and BUP1, was able to convert exogenous Levodopa to 3 +/- 4 mg/L codeine via a 14-step bioconver
260 sts such as pramipexole or ropinirole allows levodopa to be delayed, but once levodopa is added to th
263 tyrosine decarboxylases efficiently convert levodopa to dopamine, even in the presence of tyrosine,
265 dose-finding clinical trial of tozadenant in levodopa-treated patients with Parkinson's disease who h
266 nificant reduction in mean daily off-time in levodopa-treated patients with PD and motor fluctuations
272 ver, motor complications uniquely related to levodopa treatment may emerge that may be difficult to m
274 nic kainic acid lesion of the STN or chronic levodopa treatment reliably suppressed the giant GABAerg
276 der age at diagnosis, male sex, poor initial levodopa treatment response, and postural instability an
277 re acquired in each animal before initiating levodopa treatment, and again following the period of da
278 mice, together with the beneficial effect of levodopa treatment, strongly suggest that dysfunction of
285 a variable combination of autonomic failure, levodopa-unresponsive parkinsonism, cerebellar ataxia an
286 ed propensity for falls are interrelated and levodopa-unresponsive symptoms in patients with Parkinso
287 atients allocated extended-release carbidopa-levodopa vs two [1%] of 192 patients allocated immediate
291 with Parkinson's disease who were receiving levodopa were enrolled and treated at 44 sites in 15 cou
293 m levels, and abnormal reinforcing effect of levodopa when PD+HS patients are confronted with erotic
294 te hypersensitivity of preSMA and putamen to levodopa, which heralds the failure of neural networks t
295 cations arising from the early initiation of levodopa, which led to misconceived levodopa-sparing str
296 idual amblyopia after patching therapy, oral levodopa while continuing to patch 2 hours daily does no
297 duration 9.4 years +/- 2.5) both OFF and ON levodopa while they had to decide whether to engage in a
298 an sites among patients with PD treated with levodopa who experienced at least 1 hour of troublesome
300 B permeability are simultaneously induced by levodopa within areas of active microvascular remodeling