title: Treatment of moderate to severe Alzheimer's disease: rationale and trial design.
abstract: Moderate to severe Alzheimer's disease (AD) is characterized by increasing cognitive, functional, and behavioural dysfunction that results in increased caregiver burden and, eventually, complete dependence. Despite its significance as a societal health problem, there are few treatment trials of cognitive enhancers or disease modifying agents for this stage of illness. Studies suggest the cholinesterase inhibitors, especially donepezil, may provide benefit. Several studies provide support for the use of the NMDA receptor antagonist memantine as monotherapy or added to a cholinesterase inhibitor for moderate to severe AD. While there are no published guidelines for the treatment of moderate to severe AD, these studies do provide guidance for recommendations for study design and outcome measures. Such studies are urgently needed.
authors.affiliation: Department of Psychiatry, Division of Geriatric Psychiatry, Faculty of Medicine, University of Toronto, Sunnybrook & Women's College Health Sciences Centre, Toronto, ON, Canada.
authors.forename: Nathan
authors.initials: N
authors.lastname: Herrmann
mesh_terms: D000544:Alzheimer Disease / Q000188:drug therapy*; D000975:Antioxidants / Q000008:administration & dosage / Q000009:adverse effects; D002800:Cholinesterase Inhibitors / Q000008:administration & dosage* / Q000009:adverse effects; D002985:Clinical Protocols / Q000592:standards*; D002986:Clinical Trials as Topic / Q000379:methods* / Q000592:standards*; D064420:Drug-Related Side Effects and Adverse Reactions; D018691:Excitatory Amino Acid Antagonists / Q000008:administration & dosage* / Q000009:adverse effects; D006801:Humans; D010043:Outcome and Process Assessment, Health Care / Q000379:methods / Q000592:standards; D016896:Treatment Outcome
chemical_list: D000975:Antioxidants; D002800:Cholinesterase Inhibitors; D018691:Excitatory Amino Acid Antagonists