No abstract

The psychopathological status of 25 inpatients suffering from clinically definite multiple sclerosis (MS) according to Poser criteria was assessed by using standardized methods (Structured Clinical Interview for DSM-III-R, Inpatient Multidimensional Psychiatric Scale, Hamilton and Montgomery-Asberg Depression Rating Scales and the Structured Interview for the Diagnosis of Alzheimer Dementia and Dementias of other Aetiology (SIDAM). Magnetic resonance (MRT) (0.5 T; T2-weighted sequence) of the brain was analysed by measuring the ventricular brain ration (VBR), the area of the corpus callosum (CC) and the extension of hyperintense lesions of the brainstem, the temporal lobes and the brain at all. Six of 25 (24%) of these moderately disabled patients (mean Extended Disability Score (EDSS) 3.3) were diagnosed to suffer from depressive mood disorder (major depression or dysthymia); 2 were demented. In correlation analysis, depression was unrelated to age, gender, duration of illness, status of disability (EDSS) or the results of cognitive assessment. No relationship between the depression scores and the different MRT measures could be identified. The presence or absence of gadolinium enhancement was also uncorrelated to depressive symptoms. Fatigue as measured by the Fatigue Severity Scale was unrelated to depression or subcortical brain atrophy (increased VBR) but significantly correlated to the area of hyperintense MRT changes in brainstem and midbrain. Cognitive impairment (decreased SIDAM scores) was correlated to the total area of hyperintense MRT changes of the brain parenchyma. The type of clinical course (relapsing-remitting vs chronic progredient) was not found to influence the affective or cognitive state in our MS patient's sample.

Nocturnal sleep was studied in 16 inpatients with Huntington's disease. In comparison with healthy controls, patients exhibited a disturbed sleep pattern with increased sleep onset latency, reduced sleep efficiency, frequent nocturnal awakenings, more time spent awake and less slow wave sleep. These abnormalities correlated in part with duration of illness, severity of clinical symptoms, and degree of atrophy of the caudate nucleus. Patients showed an increased density of sleep spindles.

Nocturnal sleep was studied in 14 human immunodeficiency virus (HIV)-positive patients without opportunistic infections of the central nervous system. Seven patients had no bodily complaints at the time of the investigation. Patients exhibited an impaired nocturnal sleep with longer sleep onset latency, reduced total sleep time, reduced sleep efficiency, and more time spent awake and in stage 1. Stage 2 sleep was significantly decreased; in 2 cases, sleep spindle density was extremely low. REM latency was reduced and correlated negatively with depressive symptomatology, while the percentages of REM and slow wave sleep were normal. No significant differences in sleep parameters were present among patients in different stages of the illness, or between patients with and without bodily complaints. Ventricular size and sulcal width on computed tomography scans correlated with sleep variables indicating reduced sleep quality, and with REM density. Decreased tryptophan plasma levels were associated with shorter and less efficient sleep, and with reduced stage 2 sleep. The findings demonstrate that sleep EEG investigations can be valuable for detecting and monitoring central nervous system affection in HIV-positive individuals.

Nocturnal sleep of 14 patients with HIV infection was characterized by longer sleep onset latency, shorter total sleep time, reduced sleep efficiency, more time spent awake and in Stage 1. There was significantly less sleep Stage 2 than in healthy controls. REM latency was slightly reduced and correlated negatively with depressive symptomatology, while percentages of REM and slow wave sleep were normal. Patients without complaints at the time of the investigation exhibited similar sleep abnormalities. The results stress the usefulness of polysomnography as a sensitive methodology for detection and monitoring of CNS affection in HIV positive patients.