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ABSTRACT: ABSTRACT Background: We currently use the depression subscale (HADD) of the Hospital Anxiety and Depression Scale (HADS) for depression screening in elderly inpatients. Given recent concerns about the performance of the HADD in this age group, we performed a quality-control study retrospectively comparing HADD with the diagnosis of depression by a psychiatrist. We also studied the effect of dementia on the scale's performance. Methods: HADS produces two 7-item subscales assessing depression or anxiety. The HADD was administered by a neuropsychologist. As "gold standard" we considered the psychiatrist's diagnosis based on the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, criteria. Patients older than 65 years, assessed by both the HADD and the psychiatrist, with a clinical dementia rating (CDR) score lower than 3, were included. The effect of dementia was assessed by forming three groups according to the CDR score (CDR0-0.5, CDR1, and CDR2). Simple and multiple logistic regression models were applied to predict the psychiatrist's depression diagnosis from HADD scores. Areas under the receiver operating characteristics curve (AUC) were plotted and compared by χ2 tests. Results: On both univariate and multiple analyses, HADD predicted depression diagnosis but performed poorly (univariate: p = 0.009, AUC = 0.60 (95% confidence interval (CI) = 0.53-0.66); multiple: p = 0.007, AUC = 0.65 (95% CI = 0.58-0.71)), regardless of cognitive status. Because mood could have changed between the two assessments (they occurred at different points of the hospital stay), the multiple analyses were repeated after limiting time interval at 28, 21, and 14 days. No major improvements were noted. Conclusion: The HADD performed poorly in elderly inpatients regardless of cognitive status. It cannot be recommended in this population for depression screening without further study.
International Psychogeriatrics 09/2012; · 2.24 Impact Factor
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ABSTRACT: Previous studies revealed personality changes in elderly patients with early-onset depression (EOD) that persist in euthymic stages. However, depression in older patients is a complex disorder that may affect not only personality, but also cognition and brain structure. To address this issue, a cross-sectional comparison and 2-year follow-up of 28 EOD elderly patients and 48 healthy controls included detailed neurocognitive assessment, estimates of brain volumes in limbic areas and white matter hyperintensities, as well as evaluation of the Five Factor Model of personality, in a remitted mood state. Results revealed that cognitive performances as well as brain volumes were preserved in EOD patients both at baseline and at follow-up. The increased Neuroticism factor and Anxiety facet scores as well as the decreased Warmth and Positive Emotions facet scores found at baseline reached the level of healthy controls after 2years. Only the Depression facet scores remained significantly higher in EOD patients compared to controls upon follow-up. Results were independent of depressive relapse since baseline (25% of patients). These findings suggest that both cognitive performances and brain volumes show long-term preservation in older EOD patients. In contrast, the depression-related personality facet might be a trait like marker that persists in the long-term evolution of this disorder.
Psychiatry research. 03/2012; 198(1):47-52.
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ABSTRACT: Psychological predictors, such as personality traits, have aroused growing interest as possible predictors of late-life depression outcome in old age. It remains, however, unclear whether the cross-sectional relationship between personality traits and depression occurrence reported in younger samples is also present in the elderly.
Comparisons amongst 79 outpatients with DSM-IV major depression and 102 healthy controls included assessment of the five-factor model of personality (NEO PI-R), socio-demographic variables, physical health status, as well as depression features. Two sub-groups were considered, defined as young (25-50 years) and old (60-85 years) patients.
Depressed patients showed significantly higher levels of Neuroticism and lower levels of Extraversion, Openness to Experience and Conscientiousness compared to controls. Sequential logistic regression models confirmed that the combination of increased physical burden, levels of dependency, and increased Neuroticism strongly predicts the occurrence of acute depressive symptoms. In contrast, the levels of Neuroticism did not allow for differentiating late-life from young age depression. Increased physical burden and decreased depression severity were the main predictors for this distinction.
Our data indicate that personality factors and depression are related, independently of patients' age. Differences in this relationship are mainly due to the intensity of depressive symptoms rather than the patients' life period. They also stress the need to consider physical health, level of dependency and severity of symptoms when studying the relationship between personality traits and mood disorders.
Aging and Mental Health 11/2011; 16(4):472-80. · 1.37 Impact Factor
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ABSTRACT: In last years, the concept of personality moved from the stability of categorical models over the lifespan to the complex interactions between gene, environment, and clinical expression according to the dimensional approaches. Within this framework, studies start to explore the impact of personality on the evolution and treatment of depression in old age.(Figure is included in full-text article.)
Empirical evidence from younger patients has repeatedly confirmed that personality traits predict treatment course and outcome of depression. Epigenetic changes may partly determine the individual differences in personality changes facing life stresses. The limited number of studies on late-life depression revealed the differential impact of personality in early-onset versus late-onset depression. In this age group, the standardized assessment of personality traits allows predicting treatment outcome in psychotherapeutic settings for depressive outpatients. Studies on the interaction between genetic background and personality expression in late life are still missing.
Personality traits emerge as a potentially powerful determinant of the clinical outcome in old-age depression. The integration of psychological and molecular genetics findings offers a new perspective into the personality-depression relationship. Its modulation by the accumulation of individual stressful life-events may play a main role in the outcome of late-life depression.
Current opinion in psychiatry 07/2011; 24(6):478-83. · 3.57 Impact Factor
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ABSTRACT: Professional boxers and other contact sport athletes are exposed to repetitive brain trauma that may affect motor functions, cognitive performance, emotional regulation and social awareness. The term of chronic traumatic encephalopathy (CTE) was recently introduced to regroup a wide spectrum of symptoms such as cerebellar, pyramidal and extrapyramidal syndromes, impairments in orientation, memory, language, attention, information processing and frontal executive functions, as well as personality changes and behavioural and psychiatric symptoms. Magnetic resonance imaging usually reveals hippocampal and vermis atrophy, a cavum septum pellucidum, signs of diffuse axonal injury, pituitary gland atrophy, dilated perivascular spaces and periventricular white matter disease. Given the partial overlapping of the clinical expression, epidemiology and pathogenesis of CTE and Alzheimer's disease (AD), as well as the close association between traumatic brain injuries (TBIs) and neurofibrillary tangle formation, a mixed pathology promoted by pathogenetic cascades resulting in either CTE or AD has been postulated. Molecular studies suggested that TBIs increase the neurotoxicity of the TAR DNA-binding protein 43 (TDP-43) that is a key pathological marker of ubiquitin-positive forms of frontotemporal dementia (FTLD-TDP) associated or not with motor neurone disease/amyotrophic lateral sclerosis (ALS). Similar patterns of immunoreactivity for TDP-43 in CTE, FTLD-TDP and ALS as well as epidemiological correlations support the presence of common pathogenetic mechanisms. The present review provides a critical update of the evolution of the concept of CTE with reference to its neuropathological definition together with an in-depth discussion of the differential diagnosis between this entity, AD and frontotemporal dementia.
Neuropathology and Applied Neurobiology 06/2011; 37(6):570-84. · 3.80 Impact Factor
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ABSTRACT: Previous magnetic resonance imaging (MRI) studies in young patients with bipolar disorder indicated the presence of grey matter concentration changes as well as microstructural alterations in white matter in various neocortical areas and the corpus callosum. Whether these structural changes are also present in elderly patients with bipolar disorder with long-lasting clinical evolution remains unclear.
We performed a prospective MRI study of consecutive elderly, euthymic patients with bipolar disorder and healthy, elderly controls. We conducted a voxel-based morphometry (VBM) analysis and a tract-based spatial statistics (TBSS) analysis to assess fractional anisotropy and longitudinal, radial and mean diffusivity derived by diffusion tensor imaging (DTI).
We included 19 patients with bipolar disorder and 47 controls in our study. Fractional anisotropy was the most sensitive DTI marker and decreased significantly in the ventral part of the corpus callosum in patients with bipolar disorder. Longitudinal, radial and mean diffusivity showed no significant between-group differences. Grey matter concentration was reduced in patients with bipolar disorder in the right anterior insula, head of the caudate nucleus, nucleus accumbens, ventral putamen and frontal orbital cortex. Conversely, there was no grey matter concentration or fractional anisotropy increase in any brain region in patients with bipolar disorder compared with controls.
The major limitation of our study is the small number of patients with bipolar disorder.
Our data document the concomitant presence of grey matter concentration decreases in the anterior limbic areas and the reduced fibre tract coherence in the corpus callosum of elderly patients with long-lasting bipolar disorder.
Journal of psychiatry & neuroscience: JPN 01/2011; 36(6):391-401. · 5.34 Impact Factor
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ABSTRACT: Previous studies revealed that acute depressive episodes are associated with both cognitive deficits and modified personality patterns in late life. Whether or not these psychological changes are present after remission remains a matter of debate. To date, no study provided concomitant assessment of cognition and psychological functions in this particular clinical setting.
Using a cross-sectional design, 58 remitted outpatients (36 with unipolar early-onset depression (EOD) and 22 with bipolar disorder (BD)) were compared to 62 healthy controls. Assessment included detailed neurocognitive measures and evaluation of the five factor personality dimensions (NEO-Personality Inventory).
Group comparisons revealed significant slower processing speed, working and episodic memory performances in BD patients. EOD patients showed cognitive abilities comparable to those of elderly controls. In NEO PI assessment, both BD and EOD patients displayed higher Depressiveness facet scores. In addition, the EOD but not BD group had lower Extraversion factor, and Warmth and Positive Emotion facet scores than controls.
After remission from acute affective symptoms, older BD patients show significant impairment in several cognitive functions while neuropsychological performances remained intact in elderly patients with EOD. Supporting a long-lasting psychological vulnerability, EOD patients are more prone to develop emotion-related personality trait changes than BD patients.
Journal of the neurological sciences 12/2010; 299(1-2):24-9. · 2.32 Impact Factor
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Christophe Delaloye,
Guenaël Moy,
Fabienne de Bilbao,
Sandra Baudois,
Kerstin Weber,
Françoise Hofer,
Claire Ragno Paquier,
Alessia Donati, Alessandra Canuto,
Umberto Giardini,
Armin von Gunten,
Raluca Iona Stancu,
François Lazeyras,
Philippe Millet,
Philip Scheltens,
Panteleimon Giannakopoulos,
Gabriel Gold
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ABSTRACT: Whether or not cognitive impairment and brain structure changes are trait characteristics of late-life depression is still disputed. Previous studies led to conflicting data possibly because of the difference in the age of depression onset. In fact, several lines of evidence suggest that late-onset depression (LOD) is more frequently associated with neuropsychological deficits and brain pathology than early-onset depression (EOD). To date, no study explored concomitantly the cognitive profile and brain magnetic resonance imaging (MRI) patterns in euthymic EOD and LOD patients.
Using a cross-sectional design, 41 remitted outpatients (30 with EOD and 11 with LOD) were compared to 30 healthy controls. Neuropsychological evaluation concerned working memory, episodic memory, processing speed, naming capacity and executive functions. Volumetric estimates of the amygdala, hippocampus, entorhinal and anterior cingulate cortex were obtained using both voxel-based and region of interest morphometric methods. White matter hyperintensities were assessed semiquantitatively.
Both cognitive performance and brain volumes were preserved in euthymic EOD patients whereas LOD patients showed a significant reduction of episodic memory capacity and a higher rate of periventricular hyperintensities compared to both controls and EOD patients.
Our results support the dissociation between EOD thought to be mainly related to psychosocial factors and LOD that is characterized by increasing vascular burden and episodic memory decline.
Journal of the neurological sciences 12/2010; 299(1-2):19-23. · 2.32 Impact Factor
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Kerstin Weber,
Panteleimon Giannakopoulos,
Christophe Delaloye,
Fabienne de Bilbao,
Guenaël Moy,
Abba Moussa,
Montserrat Mendez Rubio,
Karsten Ebbing,
Reto Meuli,
François Lazeyras,
Corina Meiler-Mititelu,
François R Herrmann,
Gabriel Gold, Alessandra Canuto
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ABSTRACT: The presence of cognitive and structural deficits in euthymic elderly depressed patients remains a matter of debate. Integrative aetiological models assessing concomitantly these parameters as well as markers of psychological vulnerability such as persistent personality traits, are still lacking for this age group.
Cross-sectional comparisons of 38 elderly remitted patients with early-onset depression (EOD) and 62 healthy controls included detailed neuropsychological assessment, estimates of brain volumes in limbic areas and white matter hyperintensities, as well as evaluation of the Five-Factor personality dimensions.
Both cognitive performances and brain volumes were preserved in euthymic EOD patients. No significant group differences were observed in white matter hyperintensity scores between the two groups. In contrast, EOD was associated with significant increase of Neuroticism and decrease of Extraversion facet scores.
Results concern the restricted portion of EOD patients without psychiatric and physical comorbidities. Future longitudinal studies are necessary to determine the temporal relationship between the occurrence of depression and personality dimensions.
After remission from acute depressive symptoms, cognitive performances remain intact in elderly patients with EOD. In contrast to previous observations, these patients display neither significant brain volume loss in limbic areas nor increased vascular burden compared to healthy controls. Further clinical investigations on EOD patterns of vulnerability in old age will gain from focusing on psychological features such as personality traits rather than neurocognitive clues.
Journal of affective disorders 12/2009; 124(3):275-82. · 3.76 Impact Factor
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Christophe Delaloye,
Fabienne de Bilbao,
Guenaël Moy,
Sandra Baudois,
Kerstin Weber,
Leticia Campos, Alessandra Canuto,
Umberto Giardini,
Armin von Gunten,
Raluca Ioana Stancu,
Philip Scheltens,
François Lazeyras,
Philippe Millet,
Panteleimon Giannakopoulos,
Gabriel Gold
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ABSTRACT: Previous studies reported that the severity of cognitive deficits in euthymic patients with bipolar disorder (BD) increases with the duration of illness and postulated that progressive neuronal loss or shrinkage and white matter changes may be at the origin of this phenomenon. To explore this issue, the authors performed a case-control study including detailed neuropsychological and magnetic resonance imaging analyses in 17 euthymic elderly patients with BD and 17 healthy individuals.
Neuropsychological evaluation concerned working memory, episodic memory, processing speed, and executive functions. Volumetric estimates of the amygdala, hippocampus, entorhinal cortex, and anterior cingulate cortex were obtained using both voxel-based and region of interest morphometric methods. Periventricular and deep white matter were assessed semiquantitatively. Differences in cognitive performances and structural data between BD and comparison groups were analyzed using paired t-test or analysis of variance. Wilcoxon test was used in the absence of normal distribution.
Compared with healthy individuals, patients with BD obtained significantly lower performances in processing speed, working memory, and episodic memory but not in executive functions. Morphometric analyses did not show significant volumetric or white matter differences between the two groups.
Our results revealed impairment in verbal memory, working memory, and processing speed in euthymic older adults with BD. These cognitive deficits are comparable both in terms of affected functions and size effects to those previously reported in younger cohorts with BD. Both this observation and the absence of structural brain abnormalities in our cohort do not support a progressively evolving neurotoxic effect in BD.
The American journal of geriatric psychiatry: official journal of the American Association for Geriatric Psychiatry 12/2009; 17(12):1012-21. · 3.35 Impact Factor
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ABSTRACT: Although personality traits are considered significant predictors of both physical and mental health, their specific impact on treatment outcome in elderly patients with depression remains largely unexplored. Impact of personality traits on the evolution of depressive symptoms, quality of life, and perception of clinical progress was assessed in a psychotherapeutic community.
A prospective longitudinal study was conducted in 62 elderly outpatients.
Day hospital treatment as usual combined group and individual therapies, pharmacological treatment, as well as family and network meetings.
Patients presented with major depression or a depressive episode of bipolar disease.
The Geriatric Depression Scale, the Short Form Survey, and the Therapeutic Community Assessment scale were administrated at admission, 3, 6, 12 months, and at discharge. Personality was evaluated with the NEO Five-Factor Personality Inventory.
Outcome revealed reduced depression and improved mental quality of life and clinical progress. Higher Geriatric Depression Scale scores were found in individuals with higher levels of Neuroticism (and its Vulnerability facet). Better self-perception of clinical progress was observed in individuals with lower levels of the Depressiveness and Modesty facets and higher openness to action. Improvement in quality of life was predicted by high Positive emotions facet. All these associations remained significant after controlling for age, gender, and treatment length.
Personality traits may predict clinical outcome in psychotherapeutic hospital day care for elderly patients with depression.
The American journal of geriatric psychiatry: official journal of the American Association for Geriatric Psychiatry 05/2009; 17(4):335-43. · 3.35 Impact Factor
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ABSTRACT: To date, there is no widely accepted clinical scale to monitor the evolution of depressive symptoms in demented patients. We assessed the sensitivity to treatment of a validated French version of the Health of the Nation Outcome Scale (HoNOS) 65+ compared to five routinely used scales. Thirty elderly inpatients with ICD-10 diagnosis of dementia and depression were evaluated at admission and discharge using paired t-test. Using the Brief Psychiatric Rating Scale (BPRS) "depressive mood" item as gold standard, a receiver operating characteristic curve (ROC) analysis assessed the validity of HoNOS65+F "depressive symptoms" item score changes. Unlike Geriatric Depression Scale, Mini Mental State Examination and Activities of Daily Living scores, BPRS scores decreased and Global Assessment Functioning Scale score increased significantly from admission to discharge. Amongst HoNOS65+F items, "behavioural disturbance", "depressive symptoms", "activities of daily life" and "drug management" items showed highly significant changes between the first and last day of hospitalization. The ROC analysis revealed that changes in the HoNOS65+F "depressive symptoms" item correctly classified 93% of the cases with good sensitivity (0.95) and specificity (0.88) values. These data suggest that the HoNOS65+F "depressive symptoms" item may provide a valid assessment of the evolution of depressive symptoms in demented patients.
Journal of the neurological sciences 04/2009; 283(1-2):69-72. · 2.32 Impact Factor
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ABSTRACT: Behavioral and psychological symptoms (BPSD) of dementia are associated with more rapid cognitive deterioration as well as increased caregiver stress. The effectiveness of psychiatric day hospital care for this condition remains disputed. We report here the assessment of a psychotherapeutic day hospital program in a series of elderly people with dementia and concomitant BPSD.
Treatment setting: The day hospital program combined music, movement, psychodynamic group therapies, sociotherapy as well as individual interviews and family interventions. Participants: 76 individuals with mild to moderate dementia. Outcome measures: The Neuropsychiatric Inventory (NPI), Therapeutic Community Assessment scale including staff (SAS) and client assessments (CAS) and a Group Evaluation Scale (GES) were administrated at admission, 3, 6 and 12 months and discharge.
Linear regression analysis showed that SAS (but not CAS) and GES scores significantly increased while the NPI total scores decreased across the different time points. NPI item score modifications were significant for anxiety and apathy. These changes remained significant when demographic variables, drug treatment changes and occurrence of life events were also considered.
A psychotherapeutic day hospital program designed for older people with dementia and neuropsychiatric symptoms allows for a significant reduction of anxiety and apathy, better adhesion to therapeutic community treatment and clinical progress in group therapy. Controlled interventional studies are needed to further confirm these data.
Aging and Mental Health 02/2009; 13(1):92-8. · 1.37 Impact Factor
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ABSTRACT: Although previous studies suggested that psychiatric day hospital care is a valuable alternative to inpatient treatment, its effectiveness for elderly patients is disputed. Small number of cases, poor definition of the psychotherapeutic setting, and absence of systematic assessment at different time points may explain the observed discrepancies. We performed an assessment of a psychiatric day hospital treatment combining individual and group psychotherapy in a series of 122 elderly depressed outpatients.
The Geriatric Depression Scale, Short Form Survey, as well as a Therapeutic Community Assessment Scale and Group Evaluation Scale were repeated at admission, 3, 6, 12 months and discharge. The day hospital program was based on psychotherapeutic treatment combining individual and group settings. All patients presented with major depression or a depressive episode of bipolar disease. Variables included severity of depressive symptoms, quality of life, adhesion to therapeutic community treatment and progress in groups of psychotherapy, art-therapy, and psychomotricity.
There was a significant reduction of depressive symptoms, and improvement in mental quality of life across all time points studied. Adhesion to therapeutic community increased from admission to discharge. This was also the case for the progress in group therapy for all three groups used, yet the evolution of this parameter at intermediate time points was highly variable. Neither demographic characteristics, nor pharmacological treatment or presence of stressful life events predicted the clinical improvement.
Psychotherapeutic care program in day hospitals may improve clinical status and quality of life in elderly depressed patients.
International Journal of Geriatric Psychiatry 04/2008; 23(9):949-56. · 2.42 Impact Factor
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ABSTRACT: Termination in group psychotherapy is an essential phase of the psychotherapeutic process, yet its clinical determinants remain largely unknown, especially in elderly patients. The aim of this study was to assess how patients' personality traits influence their way of leaving a short-term psychotherapy group as well as a larger therapeutic community program.
Personality traits were assessed with the NEO Five-Factor Inventory in 24 elderly depressed outpatients. Patients' terminations from the group as well as from the community were ranked into four classes according to their appropriateness (completeness of experience and ability to deal with feelings of separation).
Neuroticism was not related to the quality of termination. In contrast, agreeableness and openness to experience were strongly associated with successful termination. Conscientiousness and extraversion may have a differential impact depending on the type of group (group psychotherapy versus therapeutic community).
Personality traits may be important clinical determinants of the quality of termination process in both group psychotherapy and therapeutic community settings for elderly depressed patients.
International Journal of Geriatric Psychiatry 02/2008; 23(1):22-6. · 2.42 Impact Factor
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ABSTRACT: Although vascular dementia (VaD) is a main pathology in nonagenarians and centenarians, the validity of clinical criteria for this diagnosis is unknown. We analyzed 110 autopsy cases and reported sensitivities and specificities of the State of California Alzheimer's Disease Diagnostic and Treatment Centers (ADDTC) and National Institute for Neurological Disorders and Stroke (NINDS-AIREN) criteria for possible VaD as well as Hachinski ischemic score (HIS). Among them, there were 36 neuropathologically confirmed VaD cases. All criteria displayed comparable sensitivities (0.56-0.58). Specificities values were 0.74, 0.73 and 0.66, respectively. There was an age-related decrease on ADDTC criteria sensitivity due to the fact that 42% of pure VaD cases did not present with stroke. Thirty percent of mixed dementia (MD) cases were diagnosed as VaD by both NINDS-AIREN and ADDTC criteria. This proportion reached 45.9% for the HIS. These data demonstrate that the new diagnostic criteria for possible VaD do not provide a substantial gain of sensitivity compared to the HIS. Although their specificity was significantly lower in this age group compared to younger cohorts, all of them successfully exclude AD cases.
Neurobiology of aging 05/2007; 28(4):579-85. · 5.94 Impact Factor
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ABSTRACT: To assess the reliability, validity, and feasibility of a French version of the Health of the Nation Outcome Scales for Elderly People (HoNOS65+).
Twenty mental health professionals completed the scale for 126 elderly patients. We assessed interrater reliability in inpatient and outpatient settings, together with construct and discriminant validity, as well as concurrent validity compared with several widely used clinical instruments.
Excellent agreement among raters was observed in the outpatient subgroup (kappa range 0.77 to 1.00), whereas interrater reliability was modest in the inpatient subgroup (kappa values < 0.55). In cases where the patient-caregiver relationship lasted more than 1 month, the reliability of the scale improved. Construct validity analysis revealed no subscale structure. All items except "self-injury" displayed high concurrent validity (significant Spearman correlations with 8 other questionnaires). In terms of discriminant validity, the "cognitive impairment" (area under the curve [AUC] 0.91) and "depressive symptoms" (AUC 0.79) items showed high sensitivity and specificity values.
Our results indicate that the French version of HoNOS65+ is a promising clinical assessment tool to evaluate mental disorders in the elderly in outpatient settings. We support its use in routine clinical practice, with the condition that a relatively long and individualized patient-caregiver relationship has been established.
Canadian journal of psychiatry. Revue canadienne de psychiatrie 01/2007; 52(1):37-45. · 2.42 Impact Factor
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Annals of General Psychiatry. 01/2006;
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ABSTRACT: Most previous studies addressed the cognitive impact of lacunar infarcts using radiologic correlations that are known to correlate poorly with neuropathological data. Moreover, absence of systematic bilateral assessment of vascular lesions and masking effects of Alzheimer disease pathology and macrovascular lesions may explain discrepancies among previous reports. To define the relative contribution of silent lacunes to cognitive decline, we performed a detailed analysis of lacunar and microvascular pathology in both cortical and subcortical areas of 72 elderly individuals without significant neurofibrillary tangle pathology or macrovascular lesions.
Cognitive status was assessed prospectively using the Clinical Dementia Rating (CDR) scale; neuropathological evaluation included Abeta-protein deposition staging and bilateral assessment of microvascular ischemic pathology and lacunes; statistical analysis included multivariate models controlling for age, amyloid deposits, and microvascular pathology.
Thalamic and basal ganglia lacunes were negatively associated with CDR scores; cortical microinfarcts, periventricular and diffuse white matter demyelination also significantly affected cognition. In a multivariate model, cortical microinfarcts and thalamic and basal ganglia lacunes explained 22% of CDR variability; amyloid deposits and microvascular pathology explained 12%, and the assessment of thalamic and basal ganglia lacunes added an extra 17%. Deep white matter lacunes were not related to cognitive status in univariate and multivariate models.
In agreement with the recently proposed concept of subcortical ischemic vascular dementia, our autopsy series provides important evidence that gray matter lacunes are independent predictors of cognitive decline in elderly individuals without concomitant dementing processes such as Alzheimer disease.
Stroke 07/2005; 36(6):1184-8. · 5.73 Impact Factor
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ABSTRACT: Microvascular lesions are common in brain aging, but their clinical impact is debated. Methodological problems such as the masking effect of concomitant pathologies may explain discrepancies among previous studies. To evaluate the cognitive consequences of such lesions, we prospectively investigated elderly individuals with various degrees of cognitive impairment but without significant neurofibrillary tangle pathology or macrovascular lesions.
This was a clinicopathological study of 45 elderly individuals. Cognitive status was assessed prospectively with the Clinical Dementia Rating (CDR) scale; neuropathological evaluation included Abeta-protein deposition staging and bilateral semiquantitative assessment of cortical microinfarcts, focal cortical and white matter glioses, and diffuse white matter and periventricular demyelination.
In a univariate logistic regression model, cortical microinfarcts explained 36.1% of the variability in CDR; periventricular demyelination, 10.6%; and diffuse white matter demyelination, 4.6%. After controlling for age and Abeta-protein deposition, cortical microinfarcts were the best predictor of cognitive status (19.9% of CDR variability), whereas periventricular and diffuse white matter demyelination accounted for 9.7% and 5.4% of CDR variability, respectively. Altogether, these 3 types of microvascular lesions explained 27.9% of the clinical variability. Focal cortical and white matter glioses were not related to clinical outcome.
Our data imply that cortical microinfarcts and both periventricular and deep white matter demyelination contribute significantly to the progression of cognitive deficits in brain aging. In contrast, the neuropathological evaluation of focal cortical and white matter gliosis has no clinical validity.
Stroke 03/2004; 35(2):410-4. · 5.73 Impact Factor
