title: HIV-1 infection in the lymphoid organs.
abstract: OBJECTIVE
  To develop a model of HIV disease progression.
  
  
  METHODS
  Comparative analysis of viral burden and replication between peripheral blood and lymphoid organs and of the changes in viral distribution in the lymphoid tissue.
  
  
  RESULTS
  In early-stage disease HIV-1-infected cells were sequestered in the lymphoid tissue, and the viral particles were concentrated and trapped in the germinal centers. The dichotomy in viral burden and viral replication between peripheral blood and lymphoid tissue was related to the histopathologic abnormalities associated with different stages of disease.
  
  
  CONCLUSIONS
  These histopathologic abnormalities may not only explain the changes in viral distribution observed in the lymphoid tissue in different stages of the disease, but may also reflect different functional states of the immune system during the progression of HIV-1 infection from early- to late-stage disease.
authors.affiliation: Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892.
authors.forename: C
authors.initials: C
authors.lastname: Graziosi
authors.forename: G
authors.initials: G
authors.lastname: Pantaleo
authors.forename: J F
authors.initials: JF
authors.lastname: Demarest
authors.forename: O J
authors.initials: OJ
authors.lastname: Cohen
authors.forename: M
authors.initials: M
authors.lastname: Vaccarezza
authors.forename: L
authors.initials: L
authors.lastname: Butini
authors.forename: M
authors.initials: M
authors.lastname: Montroni
authors.forename: A S
authors.initials: AS
authors.lastname: Fauci
mesh_terms: D004279:DNA, Viral / Q000235:genetics / Q000302:isolation & purification; D015658:HIV Infections / Q000209:etiology / Q000382:microbiology* / Q000473:pathology; D015497:HIV-1 / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology; D006801:Humans; D008221:Lymphoid Tissue / Q000382:microbiology* / Q000473:pathology; D012367:RNA, Viral / Q000235:genetics / Q000302:isolation & purification; D013997:Time Factors; D014779:Virus Replication
chemical_list: D004279:DNA, Viral; D012367:RNA, Viral