Chlamydia pneumoniae DNA detection in peripheral blood mononuclear cells is predictive of vascular infection

Francesco Blasi, Jens Boman, Gloria Esposito, Germano Melissano, Roberto Chiesa, Roberto Cosentini, Paolo Tarsia, Yamume Tshomba, Monia Betti, Marinella Alessi, Nicoletta Morelli, Luigi Allegra

Research output: Contribution to journalArticle


Abdominal aortic aneurysm tissue and peripheral blood mononuclear cells (PBMC) of 41 consecutive subjects undergoing abdominal aortic aneurysm surgery were analyzed by polymerase chain reaction (PCR) for the presence of Chlamydia pneumoniae, Mycoplasma pneumoniae, and Helicobacter pylori DNA. Twenty patients (49%) were positive for C. pneumoniae DNA-16 (39%) in both PBMC and aneurysm tissue, 3 (7.3%) in PBMC only, and 1 (2.4%) in the artery specimen only. Previous exposure to C. pneumoniae was confirmed in 19 (95%) of the 20 PCR positive subjects by C. pneumoniae-specific serology, using the microimmunofluorescence test. None was positive for H. pylori or M. pneumoniae DNA, either in the PBMC or in the artery specimens. In conclusion, carriage of C. pneumoniae DNA is common both in PBMC and in abdominal aortic tissue from patients undergoing abdominal aneurysm surgery. Blood PCR may be a useful tool for identifying subjects carrying C. pneumoniae in the vascular wall.

Original languageEnglish
Pages (from-to)2074-2076
Number of pages3
JournalJournal of Infectious Diseases
Issue number6
Publication statusPublished - 1999


ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Immunology

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