title: The pedunculopontine nucleus in Parkinson's disease.
abstract: This study demonstrated a significant loss of neurons within the lateral part of the pedunculopontine nucleus pars compacta in individuals with idiopathic Parkinson's disease and in individuals with combined Parkinson's and Alzheimer's disease. We also examined the extent of neuronal loss within the substantia nigra pars compacta, locus ceruleus, dorsal raphe nucleus, and nucleus basalis of Meynert. The number of pedunculopontine nucleus pars compacta neurons in the patients with Parkinson's or Parkinson's and Alzheimer's disease was reduced (average, 40%) in comparison with the number in control subjects or patients with Alzheimer's disease (p less than 0.01). This finding correlated significantly with the extent of loss of substantia nigra pars compacta neurons (p less than 0.01).
authors.affiliation: Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD.
authors.forename: R M
authors.initials: RM
authors.lastname: Zweig
authors.forename: W R
authors.initials: WR
authors.lastname: Jankel
authors.forename: J C
authors.initials: JC
authors.lastname: Hedreen
authors.forename: R
authors.initials: R
authors.lastname: Mayeux
authors.forename: D L
authors.initials: DL
authors.lastname: Price
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000150:complications / Q000473:pathology*; D002452:Cell Count; D006801:Humans; D002479:Inclusion Bodies / Q000473:pathology*; D008875:Middle Aged; D010302:Parkinson Disease, Secondary / Q000150:complications / Q000473:pathology*; D013681:Tegmentum Mesencephali / Q000473:pathology*