White Matter Lesion Assessment in Patients with Cognitive Impairment and Healthy Controls: Reliability Comparisons between Visual Rating, a Manual, and an Automatic Volumetrical MRI Method-The Gothenburg MCI Study.

Age-related white matter lesions (WML) are a risk factor for stroke, cognitive decline, and dementia. Different requirements are imposed on methods for the assessment of WML in clinical settings and for research purposes, but reliability analysis is of major importance. In this study, WML assessment with three different methods was evaluated. In the Gothenburg mild cognitive impairment study, MRI scans from 152 participants were used to assess WML with the Fazekas visual rating scale on T2 images, a manual volumetric method on FLAIR images, and FreeSurfer volumetry on T1 images. Reliability was acceptable for all three methods. For low WML volumes (2/3 of the patients), reliability was overall lower and nonsignificant for the manual volumetric method. Unreliability in the assessment of patients with low WML with manual volumetry may mainly be due to intensity variation in the FLAIR sequence used; hence, intensity standardization and normalization methods must be used for more accurate assessments. The FreeSurfer segmentations resulted in smaller WML volumes than the volumes acquired with the manual method and showed deviations from visible hypointensities in the T1 images, which quite likely reduces validity.

Low cerebrospinal fluid sulfatide predicts progression of white matter lesions: The LADIS study.

BACKGROUND/AIMS: Demyelination and axonal degeneration are the hallmarks of established white matter lesions (WML). The neurochemistry of ongoing WML is only partially known. We explored cerebrospinal fluid (CSF) substances as markers of brain tissue damage in relation to progression of WML rated on magnetic resonance imaging. METHODS: CSF from elderly individuals with WML was analyzed for amyloid markers, total τ, hyperphosphorylated τ, neurofilament protein light subunit, sulfatide and CSF/serum-albumin ratio. After 3 years, a follow-up magnetic resonance imaging was performed. Progression of WML was rated using the Rotterdam Progression Scale (RPS). RESULTS: 37 subjects (age 73.6 ± 4.6 years) were included. Subjects with more pronounced progression (RPS > 2; n = 15) had lower mean sulfatide concentration at baseline as compared to subjects with no or minimal progression (RPS 0-2; n = 22) according to univariate analyses (p = 0.009). Sulfatide was the only biomarker that predicted the RPS score according to regression analysis, explaining 18.9% of the total variance (r = 0.38, p = 0.015). CONCLUSION: The correlation of CSF sulfatide levels and RPS scores may reflect a remyelination response to the demyelination process associated with WML. Furthermore, the results strengthen the notion that WML pathology is different from that of Alzheimer's disease.

Objective assessment of the degree of dementia by means of EEG.

The aim of the study was to elaborate a method to estimate the degree of cognitive impairment in Alzheimer's disease from the EEG quantitative indicators. We examined 38 unmedicated patients with a diagnosis of Alzheimer's disease, with various stages (mild, moderate, and severe) of dementia. The EEG recordings were evaluated both visually and by means of computer analysis. The EEG spectra and coherences in 6 frequency bands were calculated in 16 EEG derivations. Among various EEG indicators, a decrease in the alpha coherence and an increase in the delta coherence was found to be most significantly correlated to the degree of dementia. Combining 6 variables from the spectrum and coherence analysis by means of the multiple regression model, a high correlation (r = 0.87) between a set of EEG variables and the Mini-Mental State Examination score could be obtained. The results suggest that the EEG can supplement the clinical examination by providing an independent assessment of the degree of dementia. The results also suggest that the EEG coherences are of particular interest in dementia, being an indicator of the signal transfer between various parts of the brain cortex.

Family intervention in schizophrenia--impact on family burden and attitude.

BACKGROUND: This study focuses on the effect of psycho-educative family therapy on the self-assessed burden in families in which one member has suffered from relapse of schizophrenia or a schizoaffective syndrome. The impact on the family's self-assessed attitude towards continuing to take care of the patient was also evaluated. Burden and attitude were assessed continuously during a period that contained no further relapse episodes. METHODS: Included were 31 families in which one family member suffered from schizophrenia or a schizoaffective syndrome. Of these, 14 families underwent a psycho-educative intervention programme called BFT (Behavioural Family Therapy). The remaining 17 families, i. e. the contrast group, received conventional family support. The intervention was initiated within 24 h after the patient/family member was admitted to a psychiatric ward due to relapse of the psychotic disorder. The intervention continued until the patient was discharged from hospital. Falloon's Distress Scale and Attitude Scale were used in the families' self-assessments of burden and attitude towards continuing to take care of the patient, respectively. The self-assessments were performed on three occasions: 1) on the day of admission to the ward, or the day after; 2) 4-5 weeks after admission; and 3) on the day of discharge, or the day after. Medication doses were registered upon admission and at the time of discharge. Finally, the rates of re-occurring relapses within 1 year after discharge from hospital were determined, i. e. 1 year after the completion of the family treatment programme. The BFT families had access to the therapist for questions after the programme had been completed, when needed. The patients and families in the contrast group had access to physicians and therapists in the outpatient care. RESULTS: The self-assessed family burden was significantly lower for the BFT families at the time of discharge, compared to the contrast group, and the self-assessed attitude towards continuing to take care of the patient was significantly more positive for the BFT families at the time of discharge, compared to the contrast families. One patient in the BFT group relapsed within 1 year, whereas 13 patients relapsed in the contrast group. The dosages of neuroleptics were significantly lower on discharge than on admission for the patients in the BFT group. CONCLUSIONS: The results suggest that BFT, when provided to schizophrenic patients and their families during a hospitalisation period caused by a psychotic relapse, reduces the feeling of burden in these families. Likewise, the families' attitude towards continuing to take care of the patients was influenced in a positive way.