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1996-03-09
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Document 0029
DOCN M9650029
TI Ultrastructural findings in the vestibular end-organs of AIDS cases.
DT 9605
AU Pappas DG Jr; Roland JT Jr; Lim J; Lai A; Hillman DE; Department of
Otolaryngology, NYU Medical Center, NY 10016, USA.
SO Am J Otol. 1995 Mar;16(2):140-5. Unique Identifier : AIDSLINE
MED/96149069
AB Neurotologic manifestations are apparent in human immunodeficiency virus
(HIV) infection, but are poorly understood. Symptoms related to the
vestibular system include episodes of vertigo, imbalance, ataxia, and
nausea. Although patients present more often with hearing impairment,
vestibular complaints are described and electrophysiologic studies
indicate vestibular dysfunction in HIV-infected patients. Whether the
disease involvement includes the central, or the peripheral nervous
system has not been established. Ultrastructural analysis of vestibular
end-organs obtained from HIV autopsy cases revealed pathologic changes
in the labyrinth wall, the epithelial lining, and the receptor maculae
and cristae. Cytologic changes in hair cells included inclusion bodies,
viral-like particles, and hair bundle malformations. Epithelial lining
cells, supporting cells, and connective tissue cells had inclusions and
viral-like particles. These findings are consistent with those of a
previous cochlear study demonstrating intracellular viral-like particles
with the morphologic characteristics of HIV. Further cytologic
evaluation of decalcified temporal bones and immunohistochemical
analysis of freshly harvested HIV-infected temporal bones may provide
further insight into the pathogenesis of viral-induced hearing loss and
vestibular impairment.
DE Acquired Immunodeficiency Syndrome/*PATHOLOGY Adult Connective
Tissue/ULTRASTRUCTURE/VIROLOGY Hair Cells, Vestibular/*ULTRASTRUCTURE
Human Inclusion Bodies, Viral/ULTRASTRUCTURE Middle Age Temporal
Bone/ULTRASTRUCTURE Vestibular Diseases/*PATHOLOGY/VIROLOGY
Vestibule/*ULTRASTRUCTURE/VIROLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).