Application of Conventional Techniques for the Diagnosis of Staphylococcus lugdunensis in Clinical Microbiology

Abstract

Introduction: the participation of coagulase negative staphylococci in human diseases is an important problem, particularly in hospital settings where these species often act as opportunistic pathogens. Objective: to show the results obtained after applying conventional techniques for its detection. Results: the tests Cumpling factor, Detection of hemolysin δ-like, acidification of the substrates trehalose, mannose, mannitol and inositol were applied, as well as the ornithine decarboxylation biochemical test and the behavior of antimicrobial sensitivity was taken into account. all being feasible for the diagnosis of this microorganism due to the results obtained. Conclusions: Staphylococcus lugdunensis is an atypical SCoN compared to the rest of the SCoNs, both due to its special virulence characteristics and its striking sensitivity to multiple antimicrobials, including penicillin sensitivity in many cases. Its diagnosis in clinical microbiology laboratories is simple, given the suspicion of this species by the positive compliance factor test, a complete identification of it must be carried out through the decarboxylation of ornithine, the acidification of mannose, as well as antimicrobial sensitivity, are useful tests to differentiate this microorganism from the rest of its species.