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Cognitive dysfunction and depression during treatment with interferon-alpha and chemotherapy
Randall S Scheibel1, Alan D Valentine, Susan O'Brien
1Department of Physical Medicine and Rehabilitation, Baylor College of Medicine, Houston, TX, USA.
Abstract:
Trials with interferon-alpha (IFN-alpha) have provided contradictory findings regarding the presence of cognitive side effects. The development of depression in some patients also raises questions about whether cognitive dysfunction might be secondary to an organic, interferon-induced mood disorder. Thirty patients with chronic myelogenous leukemia were examined before and during treatment with IFN-alpha alone or IFN-alpha and chemotherapy. Increased depressive symptoms and declines in information processing and executive functions were observed, but depression alone could not account for cognitive dysfunction. There was some evidence suggesting that exposure to chemotherapy and higher cumulative IFN-alpha dose may contribute to cognitive impairment.
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