Clinical trial NCT00196703: Memantine and Constraint-Induced Language Therapy in Chronic Poststroke Aphasia:A Randomized Controlled Trial
Official title: A 24-Week Pilot, Double-Blind, Randomized, Parallel, Placebo-Controlled Study of Memantine and Constraint-Induced Language Therapy in Chronic Poststroke Aphasia:Correlation With Cognitive Evoked Potentials During Recovery.
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: PHASE4
Conditions: Aphasia
Stroke
Keywords: Aphasia
Memantine
Constraint-induced language therapy
Event-related potentials
Lead sponsor: Gabinete Berthier y Martínez
Sponsor class: OTHER
Collaborators: name: H. Lundbeck A/S
First posted: 2005-09-20
Enrollment: 30
Sex: ALL
Minimum age (years): 18
Maximum age (years): 69
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: * Aphasia, the loss or impairment of language caused by brain damage, is one of the most devastating cognitive impairments of stroke. Aphasia can be treated with combination of speech-language therapy and drugs. Conventional speech-language therapy in chronic aphasic subjects is of little help and several drugs have been studied with limited success. Therefore other therapeutic strategies are warranted.
* Recent data suggest that drugs (memantine) acting on the brain chemical glutamate may help the recovery of cognitive deficits, included language, in subjects with vascular dementia. The present study examines the safety profile and efficacy of memantine paired with intensive language therapy in subjects with stroke-related chronic aphasia (more than 1 yr. of evolution).

Detailed description: * The efficacy of drugs that act on glutamate such as the N-methyl-D-aspartic acid (NMDA) receptor antagonist memantine requires to be explored in this population. The rationale for using memantine in post-stroke aphasia comes from recent studies on vascular dementia. Data extracted from a recent Cochrane review of randomized controlled trials of memantine in different types of dementia (vascular dementia, Alzheimer's disease, mixed dementia) reveal, after 6 weeks of treatment, beneficial effects on cognition (including language), activities of daily living, behavior and global scales as well as in the global impression of change.
* Recovery from aphasia is possible even in severe cases. While speech-language therapy remains as the mainstay treatment of aphasia, its effectiveness has not been conclusively proved. This has motivated the planning of more rational therapies (e.g., constraint-induced language therapy \[Pulvermüller et al., 2001; 32: 1621-1626\]).
* In addition, the neural correlates of improvement of language function can now be readily detectable with event-related potentials. This is a noninvasive technique that can detect in real time functional brain changes during recovery promoted by the combined action of memantine and constraint-induced language therapy.
* The aim of the present study is to assess the efficacy, safety profile, and functional correlates of memantine paired with massed language therapy in a sample of patients with chronic poststroke aphasia.

Eligibility criteria: Inclusion Criteria:

* Chronic aphasia of more than one year duration
* Must be able to complete protocol

Exclusion Criteria:

* Dementia
* Major psychiatric illness
* Severe global aphasia (precludes participation in constraint-induced language therapy)

Primary outcomes:
measure: Language function (overall aphasia severity).
measure: Communication
Secondary outcomes:
measure: Depression
measure: Cognitive evaluation of language function
measure: Changes in event-related potential
Other outcomes:
Locations:
city: Malaga
country: Spain
facility: Gabinete Berthier y Martínez and Centro de Investigaciones Médico-Sanitarias (CIMES) University of Malaga
Study officials:
affiliation: Gabinete Berthier y Martínez and Centro de Investigaciones Médico-Sanitarias (CIMES), University of Malaga
name: Marcelo L. Berthier, M.D., Ph.D
role: PRINCIPAL_INVESTIGATOR
References:
citation: Orgogozo JM, Rigaud AS, Stoffler A, Mobius HJ, Forette F. Efficacy and safety of memantine in patients with mild to moderate vascular dementia: a randomized, placebo-controlled trial (MMM 300). Stroke. 2002 Jul;33(7):1834-9. doi: 10.1161/01.str.0000020094.08790.49.
citation: Pantoni L. Treatment of vascular dementia: evidence from trials with non-cholinergic drugs. J Neurol Sci. 2004 Nov 15;226(1-2):67-70. doi: 10.1016/j.jns.2004.09.014.
citation: Roman G. Perspectives in the treatment of vascular dementia. Drugs Today (Barc). 2000 Sep;36(9):641-53. doi: 10.1358/dot.2000.36.9.593781.