Correlation of HIV-1 detection and histology in AIDS-associated emphysema

Martha M. Yearsley, Philip T. Diaz, Daren L Knoell, Gerard J. Nuovo

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

HIV-seropositive individuals are at an increased risk for an accelerated form of emphysema. The purpose of this study was to determine the distribution of HIV-1 RNA in lung tissues and correlate this with the histologic findings and expression of matrix metalloproteases (MMPs). Reverse transcriptase (RT) in situ PCR analysis was performed on 11 AIDS lung autopsy specimens which showed varying degrees of emphysematous changes. In each lung, HIV-1 RNA was detected. In areas of histologically normal lung, very rare HIV-1-infected cells were evident. In contrast, many HIV-1-infected cells were noted in areas of emphysema. HIV-1 gag RNA was evident primarily in macrophages; infected pneumocytes were also seen. Similarly, MMP mRNA and protein, primarily MMP-9, localized to the areas of emphysema. Colabeling experiments documented that MMP expression was found primarily in cells that were HIV-1 negative and adjacent to HIV-1-infected macrophages. These results suggest that AIDS-related emphysema may be due, in part, to direct infection by HIV-1 of, primarily, alveolar macrophages, and concomitant up-regulation of MMP expression in the neighboring, noninfected cells.

Original languageEnglish (US)
Pages (from-to)48-52
Number of pages5
JournalDiagnostic Molecular Pathology
Volume14
Issue number1
DOIs
StatePublished - Mar 1 2005

Fingerprint

Emphysema
HIV-1
Histology
Acquired Immunodeficiency Syndrome
Metalloproteases
Lung
RNA
Macrophages
Alveolar Epithelial Cells
RNA-Directed DNA Polymerase
Alveolar Macrophages
Autopsy
Up-Regulation
HIV
Polymerase Chain Reaction
Messenger RNA
Infection

Keywords

  • Emphysema
  • HIV-1
  • In situ PCR
  • Matrix metalloproteases

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

Correlation of HIV-1 detection and histology in AIDS-associated emphysema. / Yearsley, Martha M.; Diaz, Philip T.; Knoell, Daren L; Nuovo, Gerard J.

In: Diagnostic Molecular Pathology, Vol. 14, No. 1, 01.03.2005, p. 48-52.

Research output: Contribution to journalArticle

Yearsley, Martha M. ; Diaz, Philip T. ; Knoell, Daren L ; Nuovo, Gerard J. / Correlation of HIV-1 detection and histology in AIDS-associated emphysema. In: Diagnostic Molecular Pathology. 2005 ; Vol. 14, No. 1. pp. 48-52.
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