Alzheimer Disease & Dementia

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As I lie in my hospital bed, attempting to breathe through my trach tube at a normal rate, waiting for my morning medication, and hoping to hear good, or at least manageable, results from my doctors when they come to me on rounds, my mind wanders. Despite the precariousness of my situation, I can’t help but smile as I think of my now monthly psychotherapy sessions.

The causes of Alzheimer disease and attempts to predict who is at risk for it have been confounding the medical profession ever since Dr Alzheimer first described the disorder in 1906. Finally, a breakthrough in dye and imaging technology may be the key to solving the puzzle.

The United States Census Bureau projects that by 2010 nearly 13% of the US population will be over the age of 65. The elderly are one of the most rapidly growing segments of the US population and are expected to account for more than 20% of the total population by 2050.1 In 2001, the prevalence of dementia in North America was 6.4%. A 49% increase in the number of people with dementia is expected by 2020, and a 172% increase by 2040.2 Patients with dementia may lack the capacity to consent to treatment. The need to evaluate capacity to consent to treatment will therefore increase as the aging population grows.

A discovery about the brain protein KIBRA, commonly found in the kidneys and brain, could lead to future treatments for Alzheimer disease (AD). Investigators at the Translational Genomics Research Institute (TGen), lead by Corneveaux and Liang, in Phoenix found that the risk for AD is 25% lower in persons who carry the memory-enhancing KIBRA gene.1 This fi nding indicates that there might be a link between KIBRA and some of the proteins with which it interacts.

The use of antipsychotics to quiet agitated older adults with dementia has come under increasing fire. After a Canadian study demonstrated an increased risk of adverse events or death with these agents,1 the FDA expanded its earlier warning to physicians.

A variety of conditions may account for the sleep difficulties experienced by many older adults, including specific sleep disorders, circadian rhythm disturbances, and medical and psychiatric comorbidities.

On a hypothetical morning, you've arrived early at your office to answer e-mails and respond to prescription requests without interruptions. The following voice mail, left for you much earlier that day, awaits your attention: "Doctor, I need to discuss my mother's behavior with you. The medications she's taking might be calming her down during the days, but she's not okay at night."

Almost 3 years after the FDA warned of increased mortality in elderly patients who received atypical antipsychotics off-label for neuropsychiatric syndromes of dementia, no medication has been approved as safe and effective for this increasingly challenging problem. Recent publications, however, including a white paper from the American College of Neuropsychopharmacology (ACNP), indicate that clinical investigators are wrestling with the dilemma and considering potential alternatives to antipsychotics.