Behavioral Approaches to Cognitive Rehabilitation in Multiple Sclerosis · 2015-10-26 ·...
Transcript of Behavioral Approaches to Cognitive Rehabilitation in Multiple Sclerosis · 2015-10-26 ·...
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Behavioral Approaches to Cognitive Rehabilitation in Multiple Sclerosis
John DeLuca, Ph.D.
Vice President for Research
Kessler Foundation Research Center
West Orange, New Jersey, USA
Professor, Department of Physical Medicine & Rehabilitation
Department of Neurology and Neurosciences
UMDNJ- New Jersey Medical School
Newark, New Jersey, USA
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Cognitive Deficits in MS
• Information processing speed/ efficiency
• Executive functions
• planning, organization, initiation
• Perceptual processing
• Memory
• Retrieval failure hypothesis
• Acquisition hypothesis
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Frequency of Impairment (adapted from Benedict, et al., 2006)
Chiaravalloti & DeLuca, 2008
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Cognitive Problems and Everyday Life
Functioning
• Cognitive deficits in MS have been shown to negatively affect daily life including:
– Employment
– Social and vocational activities
– Household activities
– Sexual functioning
– Family activities
– Overall QOL
– Increased psychiatric illness
• Beyond physical disability alone
Rao et al., 1991
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Evidenced-Based Cognitive Rehabilitation for Persons with Multiple Sclerosis: A Review of
the Literature
Amanda R. O’Brien, Ph.D
Nancy Chiaravalloti, Ph.D
Yael Goverover, OT, Ph.D
John DeLuca, Ph.D.
Archives of Physical Medicine & Rehabilitation
2008, 89, 761-769
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Review Methodology
Articles were eliminated according to criteria from Cicerone et al. (2000; 2005), e.g.:
1) did not specifically study an intervention
2) was a theoretical article or general overview
3) was a review article
4) the article did not focus specifically on adults with MS
5) was non peer-reviewed (also excludes book chapters)
6) was a pharmacological intervention
7) was not in English
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Methodology of Review
• Final acceptance of evidence classification was based on total agreement between the two reviewers.
• If there was a disagreement
– The disagreement was discussed by the two reviewers and in all cases agreement was reached
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Based on the exclusion criteria
• 224 articles were identified
– 16 of these were appropriate
– randomly assigned for review among 4 reviewers
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Level Criteria
Class I Well designed, prospective, randomized controlled trials
Class Ia Well designed, prospective “quasi-randomized assignment to treatment
conditions (e.g. alternating conditions)
Class II Prospective, nonrandomized cohort studies
Retrospective, nonrandomized case-control studies
Clinical series with well-designed controls that permitted between
subjects comparisons of treatment conditions
Class III Clinical series without concurrent controls
Studies reporting one or more case study that used appropriate single
subject methods (e.g. multiple baselines)
Class IV Evidence from uncontrolled studies, case series, case reports, or expert
opinions
Levels of Evidence
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Evidenced-Based Cognitive Rehabilitation Review
• 16 studies identified
– 4 class I
– 5 class II
– 2 class III
– 5 class IV
• Attention
• Executive Functions
• Learning and Memory
• Non-specific Cognitive Rehabilitation
O’Brien et al., 2008
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Overall Results
Studies
included YES NO
Learning &
Memory 7 5 2
Executive
functions 2 1 1
attention 4 1 3
Non-specific 4 2 2
O’Brien et al., 2008
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Practice Standards
Practice Guidelines
Practice Options
Based on at least 1, well designed Class I study or overwhelming Class II evidence, that directly addresses the effectiveness of the treatment in question …
Based on well-designed Class II studies that directly address the effectiveness of the treatment in question …
Based on Class II or Class III studies, with additional grounds to support a recommendation …
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Conclusions Evidenced-Based Cognitive Rehabilitation Review
• MS received little attention to effective rehabilitation of cognitive impairment
– Yielded only 16 studies
– Contrasts with TBI reviewed 258 studies
• Only 1 practice guideline recommended
– Single technique, based on 1 study
• Missing are studies on processing speed
O’Brien et al., 2008
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General Limitations of Studies
• Subject selection:
– Self-reports of cognitive impairments
– Participants with and without cognitive impairments included
• Treatment often not impairment specific
• Frequency of treatment often not reported
• Duration of treatment often not reported
• Specific treatment details often not reported
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General Limitations of Studies
• Poor outcome measurement – i.e., “Positive clinical response.”
– Self-reports of cognition as outcome measure
• Greater need for focus on functional outcomes – Social functioning
– Occupational functioning
– IADL’s
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Methodological Aspects of Randomized Controlled Trials on Cognitive
Interventions
Alessandra Solari
Neurological Science, published online 2010
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Method and Results: Solari 2010
• Examined methodological challenges of RCT on cognitive symptoms in MS
• Bibliographic search of 7 databases
• 5 methodological criteria for inclusion
• 12 RCT published between 1996-2010
– 5 pharmacological (3 symptom tx, 2 disease modifying)
– 7 rehabilitation (6 pc based)
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Conclusions: Solari 2010
• “…quality are overall insufficient”
• Methodological problems include:
– Choosing study sample
– Choosing outcome measures
– Interventions are complex
– Training of clinicians can vary
– Blinding difficult if not impossible
– Resources necessary are very high
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Review for Current Position Paper
• Learning and memory
• Information Processing speed
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Position paper on treatment of
cognitive impairment in MS
• Define & assign 4 subtopics to Sc. Committee
• Sc. Com. provide guidance on literature searches (key words and search criteria)
• SSIF conduct literature review - list of paper
• SSIF drafts summaries for each subtopic
• Sc. Com. Identify key papers to review
• SSIF drafts preliminary position paper
• At SSIF symposium position statements are proposed to participants, to collect feed back
• Sc. Com. revise/fine tune position paper
• Submit to Multiple Sclerosis Journal
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General Procedure: Processing Speed
• No studies specifically designed to improve processing speed found
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General Procedure: Learning and Memory
• 44 potential papers identified
– Not all of these assessed memory
• 17 considered for inclusion
– Intervention was memory-based
– Memory was an outcome measure
• Reviewed independently by 2 experts
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Methodological Problems with many Existing
Behavioral Studies
• Small sample size
• Lack of control group, or inadequate control (e.g., “historic controls”)
• Interventions are multifaceted and difficult to quantify
• Inadequate selection of targeted sample – e.g., cognitively intact patients often included
• Inclusion criteria for cognitive impairment based on self-report rather than objective assessment
• Treatment is often not impairment specific (e.g., “improve cognition”)
• Frequency and intensity of treatment often not reported
• Specific details of how treatment was delivered often not reported – (e.g., non-specific cognitive training)
• Unsupervised training sessions (compliance not monitored)
• Use of poor outcome measures (e.g., “positive clinical response”)
• Outcome measurements lack relevance to everyday life
• Lack of long-term follow-up
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Study Designs Employed
Design Studies
MS vs. HC 8
RCT 5
Non-randomized, matched control
2
w/in group 1
No control 1
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Behavioral Treatment and Learning and Memory in MS
12 5
Support No Support
1 weak support
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RCT Results
3 2
Support No Support
1 weak support
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Intervention Type
Targeted
Intervention
Non-specific
training
14 3
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Intervention Format Computerized interventions
Behavioral interventions
Mendozzi, 1998 RehaCom Jonsson, 1993 NP rehab
Solari, 2004 RehaCom Allen, 1998 Story memory Tech
Tesar, 2005 RehaCom Chiaravalloti, 2002 Generated learning
Hildebrandt, 2007 VILAT-G 1.0 Chiaravalloti, 2005 Story memory Tech
Brenk, 2008 Brain Gym Basso, 2006 Generated learning
Vogt, 2009 Brain Stim Goverover, 2008 Generated learning
Shatil, 2010 CogniFit Personal Coach
Goverover, 2009 Spaced learning
Sumowski, 2010 Spaced retrieval
Goverover, 2011 GE/SE
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Example Targeted Interventions
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Self-generation to improve learning and memory of functional activities in multiple sclerosis: Meal
preparation and managing finances
Yael Govereover, Ph.D.
Nancy Chiaravalloti, Ph.D
John DeLuca, Ph.D.
Archives of Physical Medicine & Rehabilitation
2008, 89, 1514-1521
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Tasks
• Participants were asked to complete two tasks:
– Meal preparation
– Financial management
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Generation Effect and Everyday Life Activities
• Instructions on how to perform tasks were presented in two conditions:
– provided condition
– generated condition
• Within group design
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Food Preparation Results -MS
8
10
12
14
16
18
20
22
immediate 30 min 1 week
Generated
Provided
Goverover et al., 2008
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Managing Finances Results - MS
8
10
12
14
16
18
20
immediate 30 min 1 week
Generated
Provided
Goverover et al., 2008
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Spacing Effect
New learning in healthy individuals is significantly improved when trials:
• are SPACED or distributed over time
compared to
• MASSED or consecutive learning trials
Ebbinghaus, 1885/1994
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A functional application of the spacing effect to improve learning and memory in persons with
multiple sclerosis
Yael Govereover, Ph.D.
Frank H. Hillary, Ph.D.
Nancy Chiaravalloti, Ph.D
Juan Carlos Arango,, Ph.D
John DeLuca, Ph.D.
Journal of Clinical Experimental Neuropsychology, 2009, 31, 513-522
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Paragraph from Newspaper in MS
6.4
6.6
6.8
7
7.2
7.4
7.6
7.8
8
8.2
8.4
immediate 30 min
Spaced
Massed
Goverover et al., 2009
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Combined Spaced and Self-generation:
Mean Recall of Appointments
0
10
20
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50
60
70
80
90
Sp-Gen spaced massed
Chart Title
immediate
30 min delay
Goverover, Basso, Wood Chiaravalloti & DeLuca, (in press)
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“Testing Effect” Spaced retrieval”
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Retrieval Practice Improves Memory in Multiple Sclerosis: Clinical Application
of the Testing Effect
James F. Sumowski, Ph.D.
Nancy Chiaravalloti, Ph.D
John DeLuca, Ph.D.
Neuropsychology, 2010, 24, 267-272
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Testing Effect in MS
3
5
7
9
Massed Restudy Spaced Restudy Spaced Testing
Sumowski, DeLuca et al., 2010
Mean Words recalled
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Testing Effect in MS
0
2
4
6
8
10
12
Memory Impaired Memory Intact
Massed Restudy
Spaced Restudy
Spaced Testing
Sumowski, DeLuca et al., 2010
Mean Words recalled
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Sumowski et al., unpublished data
77% 25% 15%
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Sumowski et al., unpublished data
1.3% 5.0% 27.5%
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Example RCT Interventions
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Cognitive Training in MS: Effects and
Relations to Brain Atrophy
Helmut Hildebrandt Michael Lanza Horst K. Hahnc
Ebba Hoffmanna Bjorn Schwarzed
Gunther Schwendemanna Jurgen A. Krausa
Restorative Neurology and Neuroscience, 25 (2007) 33–43
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Hildebrandt, H. et al. (2007). Cognitive Training in MS: Effects and relation to brain atrophy. Restorative Neurology and Neuroscience, 25, 330-42.
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Hildebrandt, H. et al. (2007). Cognitive Training in MS: Effects and relation to brain atrophy. Restorative Neurology and Neuroscience, 25, 330-42.
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Cognitive Remediation as a Treatment for New Learning Deficits in Multiple Sclerosis
Nancy D. Chiaravalloti, Ph.D.
John DeLuca, Ph.D.
Nancy B. Moore, M.A.
Joseph H. Ricker, Ph.D.
Multiple Sclerosis, 2005, 11, 58-68
Funded by NMSS grant PP0752
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Context and Imagery
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Memory Retraining in MS
• 28 participants with MS – with objective impairment in new learning
• Method – Random assignment into two groups:
• memory retraining group • control group
– 8 sessions • 2x per week for 4 weeks • 30-90 minutes in duration
– Double blinded conditions
• Baseline • Treatment (4 weeks) • Immediate follow-up • Long-term follow-up (5 weeks following end of tx)
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HVLT-R Mod/Severe vs. Control baseline to immediate change score
-3
-2
-1
0
1
2
3
HVLT-R Change Score
mod/severe imp Control Group
p<.01
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HVLT-R Mod/Severe vs. Control baseline to long-term change score
-3
-2
-1
0
1
2
3
HVLT-R Change Score
mod/severe imp Control Group
p<.05
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Self-report Memory Impairment (n=28) Baseline to immediate follow-up
-3
-2
-1
0
1
2
3
Remember things that occur in everyday life
Treatment Group Control Group
p<.01
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Self-report Memory Impairment (n=28) Baseline to Long-term follow-up
-3
-2
-1
0
1
2
3
Remember things that occur in everyday life
Treatment Group Control Group
p<.001
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Cognitive Remediation as a Treatment for New Learning Deficits in Multiple Sclerosis
Nancy D. Chiaravalloti, Ph.D.
John DeLuca, Ph.D.
Nancy B. Moore, M.A.
Unpublished preliminary data
Funded by NIH R01
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Demographics
Variable Treatment
Group
N=47
Placebo Group
N=47
t p
Age 48.17 (9.97) 49.93 (8.76) -.86 ns
Education 15.68 (2.55) 15.79 (2.34) -.21 ns
Months since Dx 172 (119) 168 (98) .17 ns
SRT Trials to Criterion at
Screening
12.15 (3.12) 13 (3.04) -1.34 ns
Ambulation Index 2.64 (2.42) 3.14 (2.29) -.97 ns
WASI Vocab (T Score) 52.13 (9.6) 51.83 (12.55) .13 ns
WASI Block Design (T Score) 46.45 (9.2) 48.26 (9.2) -.93 ns
WASI Similarities 52.56 (8.62) 51.76 (8.85) .44 ns
WASI Matrix Reasoning 54.93 (8.45) 54.33 (9.12) .33 ns
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Learning Performance by Group CVLT
learn
ing s
lope
(T1-5
)
Sam
ple
base
d Z
sco
res
Follow-up
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
Control Treatment
Baseline
p=.02, controlling for baseline
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Learning by Group: Post-treatment*
4
5
6
7
8
9
10
11
12
Trial 1 Trial 2 Trial 3 Trial 4 Trial 5
Treatment Control
CVLT Learning Trials
p=.02, controlling for baseline * No significant group difference at baseline
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Learning by Group (post-treatment*)
4
5
6
7
8
9
10
11
12
13
14
Trial 1 Trial 2 Trial 3 Trial 4 Trial 5
4
5
6
7
8
9
10
11
12
13
14
Trial 1 Trial 2 Trial 3 Trial 4 Trial 5
Treatment ControlCVLT Learning Trials
PS Intact PS Impaired
* No significant group difference pre-treatment
p=.006
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Imaging data and Rehabilitation
• Brain changes after treatment
– Functional: fMRI
– Structural: DTI
• Does this 10 session behavioral treatment change brain structure or function?
Preliminary analysis
Chiaravalloti, DeLuca, et al., unpublished data
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Rehabilitation of Learning and Memory:
fMRI
• Pre-training (treatment group – placebo group)
• No group differences in patterns of activation
Chiaravalloti, DeLuca, et al., unpublished data
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Rehabilitation of Learning and Memory: fMRI
Post-training: treatment group significantly more activity in the hippocampus, occipital regions, and parietal regions vs. placebo group (p<.05)
Chiaravalloti, DeLuca, et al., unpublished data
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Rehabilitation of Learning and Memory: fMRI: fMRI
Post-training: treatment group significantly more activity in
frontal regions vs placebo group (p<.05)
Chiaravalloti, DeLuca, et al., unpublished data
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DTI Results
3 clusters of increased FA were identified after memory training:
1. Body of the corpus collosum
2. Fornix
3. Right inferior longitudinal fasciculus
Preliminary data
Leavitt, Chiaravalloti, DeLuca, et al., unpublished data
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Results Group x time interaction (corpus collosum)
0.35
0.4
0.45
0.5
pre- post-
Non-treatment
Treatment
FA
Leavitt et al., unpublished
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2 clusters of significance emerged when
threshold was set at >200 contiguous voxels,
all significant at p<.01
1. Left inferior longitudinal fasciculus (ILF)
= 445 significant voxels
2. Right superior longitudinal fasciculus
(SLF) = 204 significant voxels
24% increase in FA (274 voxels at p<.05)
Leavitt et al., unpublished
Cluster 1: Body of corpus collosum
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Results
Group x time interaction (fornix)
0.35
0.4
0.45
0.5
pre- post-
Non-treatment
Treatment
FA
Leavitt et al., unpublished
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Cluster 2: Fornix
22% increase in FA (268 voxels at p<.05)
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Results
Group x time interaction (right ILF)
0.35
0.4
0.45
0.5
pre- post-
Non-treatment
Treatment
FA
Leavitt et al., unpublished
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Cluster 3: Right inferior longitudinal fasciculus
Leavitt et al., unpublished
19% increase in FA (158 voxels at p<.05)
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Overall Conclusions
• Overall quality moderate to poor • Numerous methodological problems • Relatively small sample size • Yet majority show positive results • Both computer-based and behavioral
interventions used • Results viewed preliminary and with caution • No studies found to address processing
speed • Future RCT are needed
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Thank you
Yael Goverover James Sumowski
Victoria Leavitt Helen Genova
Jean Lengenfelder Glen Wylie
Nancy Chiaravalloti Nancy Moore
National Multiple Sclerosis Society:
Pilot Grant #P0782
NIH Grants (NCMRR):
1R01HD045798
1R01HD045798 S
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Treatment Protocol Study #2: NIH RO1
• Currently concluding clinical trial
• 100+ participants
• Follow-up 6 months post treatment
• Examines additional outcomes
– Everyday life
– Neuroimaging (on a subset of participants)