title: Brain deposition of beta-amyloid is a common pathologic feature in HIV positive patients.
abstract: BACKGROUND
  We planned to analyze the prevalence and distribution of beta-amyloid deposition in the HIV+ brain in the HAART era. Our working hypothesis is that long term survival, aging and the secondary effects of HAART may contribute to increased beta-amyloid accumulation in this patient population.
  
  
  METHODS
  Paraffin embedded archival brain autopsy tissues were assessed by immunocytochemistry for beta-amyloid. Detailed in-vivo neuro-behavioral assessments and ApoE genotyping were available for a subset of the studied population.
  
  
  RESULTS
  Immunoreactivity with the antibodies 4G8 and 6E10 was found predominantly in neuronal soma and dystrophic axonal processes. Extracellular, often perivascular plaques were also identified in many cases.
  
  
  CONCLUSIONS
  We propose that prolonged HAART and aging may contribute to an overall increase in amyloid deposition, potentially mediated by inhibition of insulin degradation enzyme (IDE) or disruption of the axonal transport of the amyloid precursor protein.
authors.affiliation: Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
authors.forename: Douglas A
authors.initials: DA
authors.lastname: Green
authors.forename: Eliezer
authors.initials: E
authors.lastname: Masliah
authors.forename: Harry V
authors.initials: HV
authors.lastname: Vinters
authors.forename: Pouneh
authors.initials: P
authors.lastname: Beizai
authors.forename: David J
authors.initials: DJ
authors.lastname: Moore
authors.forename: Cristian L
authors.initials: CL
authors.lastname: Achim
mesh_terms: D000328:Adult; D000368:Aged; D016229:Amyloid beta-Peptides / Q000378:metabolism*; D000686:Amyloidosis / Q000378:metabolism / Q000821:virology*; D023241:Antiretroviral Therapy, Highly Active / Q000009:adverse effects; D001927:Brain Diseases / Q000378:metabolism / Q000821:virology*; D005260:Female; D015658:HIV Infections / Q000150:complications* / Q000188:drug therapy / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D016612:Paraffin Embedding
chemical_list: D016229:Amyloid beta-Peptides