Detection of pathogenic bacteria in skin lesions of patients with chiclero's ulcer. Reluctant response to antimonial treatment.
Open Access
- 1 December 2003
- journal article
- Published by FapUNIFESP (SciELO) in Memórias do Instituto Oswaldo Cruz
- Vol. 98 (8), 1093-1095
- https://doi.org/10.1590/s0074-02762003000800021
Abstract
We investigated the bacterial flora present in skin lesions of patients with chiclero's ulcer from the Yucatan peninsula of Mexico using conventional culture methods (11 patients), and an immunocolorimetric detection of pathogenic Streptococcus pyogenes (15 patients). Prevalence of bacteria isolated by culture methods was 90.9% (10/11). We cultured, from chiclero's ulcers (60%), pathogenic bacterial such as Staphylococcus aureus (20%), S. pyogenes (1.6%), Pseudomonas aeruginosa (1.6%), Morganella morganii (1.6%), and opportunist pathogenic bacteria such as Klebsiella spp. (20.0%), Enterobacter spp. (20%), and Enterococcus spp. (20%). We also cultured coagulase-negative staphylococci in 40% (4/10) of the remaining patients. Micrococcus spp. and coagulase-negative staphylococci constituted the bacterial genuses more frequently isolated in the normal skin of patients with chiclero's ulcer and healthy individuals used as controls. We also undertook another study to find out the presence of S. pyogenes by an immunocolorimetric assay. This study indicated that 60% (9/15) of the ulcerated lesions, but not normal controls, were contaminated with S. pyogenes. Importantly, individuals with purulent secretion and holding concomitant infections with S. pyogenes, S. aureus, P. aeruginosa, M. morganii, and E. durans took longer to heal Leishmania (L.) mexicana infections treated with antimonial drugs. Our results suggest the need to eliminate bacterial purulent infections, by antibiotic treatment, before starting antimonial administration to patients with chiclero's ulcer.Keywords
This publication has 5 references indexed in Scilit:
- Inter-current and nosocomial infections among visceral leishmaniasis patients in Ethiopia: an observational studyActa Tropica, 2001
- Immunomodulation of Chiclero's Ulcer. Role of Eosinophils, T Cells, Tumour Necrosis Factor and Interleukin‐2Scandinavian Journal of Immunology, 1998
- T cell and non-T cell compartments can independently determine resistance to Leishmania major.The Journal of Experimental Medicine, 1995
- Microbial Ecology of the SkinAnnual Review of Microbiology, 1988
- Leishmania braziliensis: Effects of bacteria (Staphylococcus aureus and Pasteurella multocida) on the developing cutaneous leishmaniasis lesion in the golden hamsterExperimental Parasitology, 1983