Delayed onset of Alzheimer's disease with nonsteroidal anti-inflammatory and histamine H2 blocking drugs.
Factors that modify onset of Alzheimer's disease (AD) may be revealed by comparing environmental exposures in affected and unaffected members of discordant twin pairs or sibships. Among siblings at high risk of AD, sustained use of nonsteroidal anti-inflammatory drugs (NSAIDs) was associated with delayed onset and reduced risk of AD. After adjustment for use of NSAIDs, there was minimal effect on onset with reported history of any of three common illnesses (arthritis, diabetes, or acid-peptic disease). However, independent of exposure to NSAIDs, onset was unexpectedly delayed in those reporting extended use of histamine H2 blocking drugs. Randomized clinical trials will be needed to affirm the utility of these drugs for prevention, but the present findings may have implications for pathogenesis: because NSAIDs block the calcium-dependent postsynaptic cascade that induces excitotoxic cell death in NMDA-reactive neurons, and because histamine potentiates such events, excitotoxicity may deserve additional investigation in AD.
Department of Psychiatry, Duke University Medical Center, Durham, NC 27710, USA.
J C
JC
Breitner
K A
KA
Welsh
M J
MJ
Helms
P C
PC
Gaskell
B A
BA
Gau
A D
AD
Roses
M A
MA
Pericak-Vance
A M
AM
Saunders
D017668:Age of Onset; D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000235:genetics / Q000517:prevention & control*; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use*; D016022:Case-Control Studies; D018572:Disease-Free Survival; D004357:Drug Synergism; D005192:Family Health; D005260:Female; D006635:Histamine H2 Antagonists / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016016:Proportional Hazards Models
D000894:Anti-Inflammatory Agents, Non-Steroidal; D006635:Histamine H2 Antagonists