Alzheimer's disease is characterized by the accumulation of amyloid deposits in the brain and the progressive loss of cognitive functions. Although the precise role of amyloid-β in disease progression remains somewhat controversial, many efforts to halt or reverse disease progression have focussed on reducing its synthesis or enhancing its removal. It is… (More)
We evaluated 100 primary care outpatients for signs of cognitive impairment using the Mini-Mental State Examination (MMSE). The 23 subjects scoring abnormal values (less than 24/30) were found to be cognitively impaired. Seventeen had previously undetected cognitive impairment, while six had prior diagnoses consistent with cognitive impairment. Independent… (More)
The dexamethasone suppression test (DST) is being used clinically as a diagnostic laboratory test for depression. Drug histories collected from 336 psychiatric inpatients revealed that 60% were taking one or more drugs suspected of altering DST results in either a false-positive or false-negative manner. Practical limitations of the DST as a biologic marker… (More)
A patient with a previously undescribed spontaneous arrhythmic vertical eye movement termed slow-upward ocular bobbing is reported. The patient had a one-and-a-half syndrome due to pontine infarction. A simplified scheme for describing the variations of ocular bobbing is proposed based on the velocity and direction of the initial eye movement.
Primary degenerative dementia (Alzheimer's disease) is characterized by intellectual decline with impairment of memory, judgment, and abstract thinking. Also common are personality changes and disturbances of higher cortical function such as aphasia, apraxia, and agnosia. Standardized brief cognitive tests are useful for evaluating mental status, which is… (More)
Depression is a significant problem in the elderly population and is often accompanied by cognitive changes and agitation. Hypothalamic-pituitary axis dysfunction may occur in some depressed elderly patients and represent a non-specific physiological hyperarousal state. Moreover, recent evidence confirms that antidepressants down-regulate beta-adrenergic… (More)