Journal Article

<i>Pneumocystis jiroveci</i> Genotypes in the Spanish Population

M. A. Montes Cano, C. de la Horra, J. Martín-Juan, J. M. Varela, R. Torronteras, N. Respaldiza, F. J. Medrano and E. J. Calderón

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 39, issue 1, pages 123-128
Published in print July 2004 | ISSN: 1058-4838
Published online July 2004 | e-ISSN: 1537-6591 | DOI:
Pneumocystis jiroveci Genotypes in the Spanish Population

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This study describes the genotype distribution of Pneumocystis jiroveci in 79 respiratory samples obtained from 15 patients with acquired immunodeficiency syndrome (AIDS) with P. jiroveci pneumonia and 64 human immunodeficiency virus—negative subjects with different chronic pulmonary diseases. The genotyping was based in analysis of 2 independent genetic loci: the mitochondrial large subunit ribosomal RNA (mt LSU rRNA) fragment (assessed by direct sequencing) and the gene for dihydropteroate synthase (DHPS; assessed by restriction fragment—length polymorphism). The mt LSU rRNA analysis revealed the presence of 3 different polymorphisms for both populations. The major genotype, 85C/248C, was found to be significantly higher in patients with AIDS and P. jiroveci pneumonia than in patients with pulmonary disease. The rate of genotypes 85A/248C and 85T/248C was similar in both groups. The analysis of DHPS genotypes assesses the prevalence of its 4 possible genotypes, with 35.5% of genotypes related to sulfa resistance. The data suggest a common source of infection between both groups.

Journal Article.  3651 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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